forked from Minki/linux
048c96e286
If a menu has more than 64 items, then don't check menu_skip_mask for items 65 and up. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Reported-by: syzbot+42d8c7c3d3e594b34346@syzkaller.appspotmail.com Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
4921 lines
143 KiB
C
4921 lines
143 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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V4L2 controls framework implementation.
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Copyright (C) 2010 Hans Verkuil <hverkuil@xs4all.nl>
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*/
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#define pr_fmt(fmt) "v4l2-ctrls: " fmt
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#include <linux/ctype.h>
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#include <linux/export.h>
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#include <linux/mm.h>
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#include <linux/slab.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-dev.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-event.h>
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#include <media/v4l2-fwnode.h>
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#include <media/v4l2-ioctl.h>
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#define dprintk(vdev, fmt, arg...) do { \
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if (!WARN_ON(!(vdev)) && ((vdev)->dev_debug & V4L2_DEV_DEBUG_CTRL)) \
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printk(KERN_DEBUG pr_fmt("%s: %s: " fmt), \
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__func__, video_device_node_name(vdev), ##arg); \
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} while (0)
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#define has_op(master, op) \
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(master->ops && master->ops->op)
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#define call_op(master, op) \
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(has_op(master, op) ? master->ops->op(master) : 0)
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static const union v4l2_ctrl_ptr ptr_null;
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/* Internal temporary helper struct, one for each v4l2_ext_control */
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struct v4l2_ctrl_helper {
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/* Pointer to the control reference of the master control */
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struct v4l2_ctrl_ref *mref;
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/* The control ref corresponding to the v4l2_ext_control ID field. */
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struct v4l2_ctrl_ref *ref;
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/* v4l2_ext_control index of the next control belonging to the
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same cluster, or 0 if there isn't any. */
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u32 next;
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};
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/* Small helper function to determine if the autocluster is set to manual
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mode. */
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static bool is_cur_manual(const struct v4l2_ctrl *master)
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{
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return master->is_auto && master->cur.val == master->manual_mode_value;
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}
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/* Same as above, but this checks the against the new value instead of the
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current value. */
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static bool is_new_manual(const struct v4l2_ctrl *master)
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{
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return master->is_auto && master->val == master->manual_mode_value;
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}
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/* Returns NULL or a character pointer array containing the menu for
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the given control ID. The pointer array ends with a NULL pointer.
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An empty string signifies a menu entry that is invalid. This allows
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drivers to disable certain options if it is not supported. */
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const char * const *v4l2_ctrl_get_menu(u32 id)
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{
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static const char * const mpeg_audio_sampling_freq[] = {
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"44.1 kHz",
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"48 kHz",
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"32 kHz",
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NULL
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};
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static const char * const mpeg_audio_encoding[] = {
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"MPEG-1/2 Layer I",
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"MPEG-1/2 Layer II",
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"MPEG-1/2 Layer III",
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"MPEG-2/4 AAC",
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"AC-3",
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NULL
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};
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static const char * const mpeg_audio_l1_bitrate[] = {
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"32 kbps",
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"64 kbps",
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"96 kbps",
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"128 kbps",
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"160 kbps",
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"192 kbps",
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"224 kbps",
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"256 kbps",
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"288 kbps",
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"320 kbps",
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"352 kbps",
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"384 kbps",
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"416 kbps",
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"448 kbps",
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NULL
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};
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static const char * const mpeg_audio_l2_bitrate[] = {
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"32 kbps",
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"48 kbps",
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"56 kbps",
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"64 kbps",
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"80 kbps",
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"96 kbps",
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"112 kbps",
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"128 kbps",
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"160 kbps",
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"192 kbps",
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"224 kbps",
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"256 kbps",
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"320 kbps",
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"384 kbps",
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NULL
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};
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static const char * const mpeg_audio_l3_bitrate[] = {
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"32 kbps",
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"40 kbps",
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"48 kbps",
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"56 kbps",
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"64 kbps",
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"80 kbps",
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"96 kbps",
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"112 kbps",
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"128 kbps",
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"160 kbps",
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"192 kbps",
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"224 kbps",
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"256 kbps",
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"320 kbps",
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NULL
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};
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static const char * const mpeg_audio_ac3_bitrate[] = {
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"32 kbps",
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"40 kbps",
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"48 kbps",
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"56 kbps",
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"64 kbps",
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"80 kbps",
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"96 kbps",
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"112 kbps",
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"128 kbps",
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"160 kbps",
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"192 kbps",
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"224 kbps",
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"256 kbps",
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"320 kbps",
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"384 kbps",
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"448 kbps",
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"512 kbps",
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"576 kbps",
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"640 kbps",
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NULL
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};
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static const char * const mpeg_audio_mode[] = {
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"Stereo",
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"Joint Stereo",
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"Dual",
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"Mono",
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NULL
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};
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static const char * const mpeg_audio_mode_extension[] = {
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"Bound 4",
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"Bound 8",
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"Bound 12",
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"Bound 16",
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NULL
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};
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static const char * const mpeg_audio_emphasis[] = {
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"No Emphasis",
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"50/15 us",
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"CCITT J17",
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NULL
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};
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static const char * const mpeg_audio_crc[] = {
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"No CRC",
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"16-bit CRC",
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NULL
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};
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static const char * const mpeg_audio_dec_playback[] = {
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"Auto",
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"Stereo",
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"Left",
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"Right",
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"Mono",
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"Swapped Stereo",
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NULL
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};
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static const char * const mpeg_video_encoding[] = {
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"MPEG-1",
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"MPEG-2",
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"MPEG-4 AVC",
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NULL
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};
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static const char * const mpeg_video_aspect[] = {
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"1x1",
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"4x3",
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"16x9",
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"2.21x1",
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NULL
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};
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static const char * const mpeg_video_bitrate_mode[] = {
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"Variable Bitrate",
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"Constant Bitrate",
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"Constant Quality",
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NULL
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};
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static const char * const mpeg_stream_type[] = {
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"MPEG-2 Program Stream",
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"MPEG-2 Transport Stream",
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"MPEG-1 System Stream",
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"MPEG-2 DVD-compatible Stream",
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"MPEG-1 VCD-compatible Stream",
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"MPEG-2 SVCD-compatible Stream",
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NULL
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};
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static const char * const mpeg_stream_vbi_fmt[] = {
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"No VBI",
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"Private Packet, IVTV Format",
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NULL
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};
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static const char * const camera_power_line_frequency[] = {
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"Disabled",
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"50 Hz",
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"60 Hz",
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"Auto",
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NULL
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};
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static const char * const camera_exposure_auto[] = {
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"Auto Mode",
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"Manual Mode",
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"Shutter Priority Mode",
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"Aperture Priority Mode",
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NULL
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};
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static const char * const camera_exposure_metering[] = {
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"Average",
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"Center Weighted",
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"Spot",
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"Matrix",
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NULL
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};
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static const char * const camera_auto_focus_range[] = {
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"Auto",
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"Normal",
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"Macro",
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"Infinity",
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NULL
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};
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static const char * const colorfx[] = {
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"None",
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"Black & White",
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"Sepia",
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"Negative",
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"Emboss",
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"Sketch",
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"Sky Blue",
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"Grass Green",
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"Skin Whiten",
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"Vivid",
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"Aqua",
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"Art Freeze",
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"Silhouette",
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"Solarization",
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"Antique",
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"Set Cb/Cr",
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NULL
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};
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static const char * const auto_n_preset_white_balance[] = {
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"Manual",
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"Auto",
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"Incandescent",
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"Fluorescent",
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"Fluorescent H",
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"Horizon",
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"Daylight",
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"Flash",
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"Cloudy",
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"Shade",
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NULL,
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};
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static const char * const camera_iso_sensitivity_auto[] = {
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"Manual",
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"Auto",
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NULL
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};
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static const char * const scene_mode[] = {
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"None",
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"Backlight",
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"Beach/Snow",
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"Candle Light",
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"Dusk/Dawn",
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"Fall Colors",
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"Fireworks",
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"Landscape",
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"Night",
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"Party/Indoor",
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"Portrait",
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"Sports",
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"Sunset",
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"Text",
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NULL
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};
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static const char * const tune_emphasis[] = {
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"None",
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"50 Microseconds",
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"75 Microseconds",
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NULL,
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};
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static const char * const header_mode[] = {
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"Separate Buffer",
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"Joined With 1st Frame",
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NULL,
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};
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static const char * const multi_slice[] = {
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"Single",
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"Max Macroblocks",
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"Max Bytes",
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NULL,
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};
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static const char * const entropy_mode[] = {
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"CAVLC",
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"CABAC",
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NULL,
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};
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static const char * const mpeg_h264_level[] = {
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"1",
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"1b",
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"1.1",
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"1.2",
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"1.3",
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"2",
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"2.1",
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"2.2",
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"3",
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"3.1",
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"3.2",
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"4",
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"4.1",
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"4.2",
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"5",
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"5.1",
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"5.2",
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"6.0",
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"6.1",
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"6.2",
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NULL,
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};
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static const char * const h264_loop_filter[] = {
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"Enabled",
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"Disabled",
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"Disabled at Slice Boundary",
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NULL,
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};
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static const char * const h264_profile[] = {
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"Baseline",
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"Constrained Baseline",
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"Main",
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"Extended",
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"High",
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"High 10",
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"High 422",
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"High 444 Predictive",
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"High 10 Intra",
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"High 422 Intra",
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"High 444 Intra",
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"CAVLC 444 Intra",
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"Scalable Baseline",
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"Scalable High",
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"Scalable High Intra",
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"Stereo High",
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"Multiview High",
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"Constrained High",
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NULL,
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};
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static const char * const vui_sar_idc[] = {
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"Unspecified",
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"1:1",
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"12:11",
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"10:11",
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"16:11",
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"40:33",
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"24:11",
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"20:11",
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"32:11",
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"80:33",
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"18:11",
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"15:11",
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"64:33",
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"160:99",
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"4:3",
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"3:2",
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"2:1",
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"Extended SAR",
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NULL,
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};
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static const char * const h264_fp_arrangement_type[] = {
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"Checkerboard",
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"Column",
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"Row",
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"Side by Side",
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"Top Bottom",
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"Temporal",
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NULL,
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};
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static const char * const h264_fmo_map_type[] = {
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"Interleaved Slices",
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"Scattered Slices",
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"Foreground with Leftover",
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"Box Out",
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"Raster Scan",
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"Wipe Scan",
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"Explicit",
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NULL,
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};
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static const char * const h264_decode_mode[] = {
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"Slice-Based",
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"Frame-Based",
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NULL,
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};
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static const char * const h264_start_code[] = {
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"No Start Code",
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"Annex B Start Code",
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NULL,
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};
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static const char * const mpeg_mpeg2_level[] = {
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"Low",
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"Main",
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"High 1440",
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"High",
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NULL,
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};
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static const char * const mpeg2_profile[] = {
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"Simple",
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"Main",
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"SNR Scalable",
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"Spatially Scalable",
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"High",
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NULL,
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};
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static const char * const mpeg_mpeg4_level[] = {
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"0",
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"0b",
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"1",
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"2",
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"3",
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"3b",
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"4",
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"5",
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NULL,
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};
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static const char * const mpeg4_profile[] = {
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"Simple",
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"Advanced Simple",
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"Core",
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"Simple Scalable",
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"Advanced Coding Efficiency",
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NULL,
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};
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static const char * const vpx_golden_frame_sel[] = {
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"Use Previous Frame",
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"Use Previous Specific Frame",
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NULL,
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};
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static const char * const vp8_profile[] = {
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"0",
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"1",
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"2",
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"3",
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NULL,
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};
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static const char * const vp9_profile[] = {
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"0",
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"1",
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"2",
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"3",
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NULL,
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};
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static const char * const vp9_level[] = {
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"1",
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"1.1",
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"2",
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"2.1",
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"3",
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"3.1",
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"4",
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"4.1",
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"5",
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"5.1",
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"5.2",
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"6",
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"6.1",
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"6.2",
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NULL,
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};
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static const char * const flash_led_mode[] = {
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"Off",
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"Flash",
|
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"Torch",
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NULL,
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};
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static const char * const flash_strobe_source[] = {
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"Software",
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"External",
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NULL,
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};
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static const char * const jpeg_chroma_subsampling[] = {
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"4:4:4",
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"4:2:2",
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"4:2:0",
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"4:1:1",
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"4:1:0",
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"Gray",
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NULL,
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};
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static const char * const dv_tx_mode[] = {
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"DVI-D",
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"HDMI",
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NULL,
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};
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static const char * const dv_rgb_range[] = {
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"Automatic",
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"RGB Limited Range (16-235)",
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"RGB Full Range (0-255)",
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NULL,
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};
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static const char * const dv_it_content_type[] = {
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"Graphics",
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"Photo",
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"Cinema",
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"Game",
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"No IT Content",
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NULL,
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};
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static const char * const detect_md_mode[] = {
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"Disabled",
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"Global",
|
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"Threshold Grid",
|
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"Region Grid",
|
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NULL,
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};
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|
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static const char * const hevc_profile[] = {
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"Main",
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"Main Still Picture",
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"Main 10",
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NULL,
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};
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static const char * const hevc_level[] = {
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"1",
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"2",
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"2.1",
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"3",
|
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"3.1",
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"4",
|
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"4.1",
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"5",
|
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"5.1",
|
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"5.2",
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"6",
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"6.1",
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"6.2",
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NULL,
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};
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static const char * const hevc_hierarchial_coding_type[] = {
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"B",
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"P",
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NULL,
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};
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static const char * const hevc_refresh_type[] = {
|
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"None",
|
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"CRA",
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"IDR",
|
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NULL,
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|
};
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|
static const char * const hevc_size_of_length_field[] = {
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"0",
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"1",
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|
"2",
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|
"4",
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NULL,
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|
};
|
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static const char * const hevc_tier[] = {
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"Main",
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"High",
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NULL,
|
|
};
|
|
static const char * const hevc_loop_filter_mode[] = {
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"Disabled",
|
|
"Enabled",
|
|
"Disabled at slice boundary",
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"NULL",
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};
|
|
static const char * const hevc_decode_mode[] = {
|
|
"Slice-Based",
|
|
"Frame-Based",
|
|
NULL,
|
|
};
|
|
static const char * const hevc_start_code[] = {
|
|
"No Start Code",
|
|
"Annex B Start Code",
|
|
NULL,
|
|
};
|
|
static const char * const camera_orientation[] = {
|
|
"Front",
|
|
"Back",
|
|
"External",
|
|
NULL,
|
|
};
|
|
static const char * const mpeg_video_frame_skip[] = {
|
|
"Disabled",
|
|
"Level Limit",
|
|
"VBV/CPB Limit",
|
|
NULL,
|
|
};
|
|
|
|
switch (id) {
|
|
case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
|
|
return mpeg_audio_sampling_freq;
|
|
case V4L2_CID_MPEG_AUDIO_ENCODING:
|
|
return mpeg_audio_encoding;
|
|
case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
|
|
return mpeg_audio_l1_bitrate;
|
|
case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
|
|
return mpeg_audio_l2_bitrate;
|
|
case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
|
|
return mpeg_audio_l3_bitrate;
|
|
case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
|
|
return mpeg_audio_ac3_bitrate;
|
|
case V4L2_CID_MPEG_AUDIO_MODE:
|
|
return mpeg_audio_mode;
|
|
case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
|
|
return mpeg_audio_mode_extension;
|
|
case V4L2_CID_MPEG_AUDIO_EMPHASIS:
|
|
return mpeg_audio_emphasis;
|
|
case V4L2_CID_MPEG_AUDIO_CRC:
|
|
return mpeg_audio_crc;
|
|
case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK:
|
|
case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK:
|
|
return mpeg_audio_dec_playback;
|
|
case V4L2_CID_MPEG_VIDEO_ENCODING:
|
|
return mpeg_video_encoding;
|
|
case V4L2_CID_MPEG_VIDEO_ASPECT:
|
|
return mpeg_video_aspect;
|
|
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
|
|
return mpeg_video_bitrate_mode;
|
|
case V4L2_CID_MPEG_STREAM_TYPE:
|
|
return mpeg_stream_type;
|
|
case V4L2_CID_MPEG_STREAM_VBI_FMT:
|
|
return mpeg_stream_vbi_fmt;
|
|
case V4L2_CID_POWER_LINE_FREQUENCY:
|
|
return camera_power_line_frequency;
|
|
case V4L2_CID_EXPOSURE_AUTO:
|
|
return camera_exposure_auto;
|
|
case V4L2_CID_EXPOSURE_METERING:
|
|
return camera_exposure_metering;
|
|
case V4L2_CID_AUTO_FOCUS_RANGE:
|
|
return camera_auto_focus_range;
|
|
case V4L2_CID_COLORFX:
|
|
return colorfx;
|
|
case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE:
|
|
return auto_n_preset_white_balance;
|
|
case V4L2_CID_ISO_SENSITIVITY_AUTO:
|
|
return camera_iso_sensitivity_auto;
|
|
case V4L2_CID_SCENE_MODE:
|
|
return scene_mode;
|
|
case V4L2_CID_TUNE_PREEMPHASIS:
|
|
return tune_emphasis;
|
|
case V4L2_CID_TUNE_DEEMPHASIS:
|
|
return tune_emphasis;
|
|
case V4L2_CID_FLASH_LED_MODE:
|
|
return flash_led_mode;
|
|
case V4L2_CID_FLASH_STROBE_SOURCE:
|
|
return flash_strobe_source;
|
|
case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
|
|
return header_mode;
|
|
case V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE:
|
|
return mpeg_video_frame_skip;
|
|
case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
|
|
return multi_slice;
|
|
case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:
|
|
return entropy_mode;
|
|
case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
|
|
return mpeg_h264_level;
|
|
case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
|
|
return h264_loop_filter;
|
|
case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
|
|
return h264_profile;
|
|
case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC:
|
|
return vui_sar_idc;
|
|
case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE:
|
|
return h264_fp_arrangement_type;
|
|
case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE:
|
|
return h264_fmo_map_type;
|
|
case V4L2_CID_STATELESS_H264_DECODE_MODE:
|
|
return h264_decode_mode;
|
|
case V4L2_CID_STATELESS_H264_START_CODE:
|
|
return h264_start_code;
|
|
case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL:
|
|
return mpeg_mpeg2_level;
|
|
case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE:
|
|
return mpeg2_profile;
|
|
case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
|
|
return mpeg_mpeg4_level;
|
|
case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
|
|
return mpeg4_profile;
|
|
case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL:
|
|
return vpx_golden_frame_sel;
|
|
case V4L2_CID_MPEG_VIDEO_VP8_PROFILE:
|
|
return vp8_profile;
|
|
case V4L2_CID_MPEG_VIDEO_VP9_PROFILE:
|
|
return vp9_profile;
|
|
case V4L2_CID_MPEG_VIDEO_VP9_LEVEL:
|
|
return vp9_level;
|
|
case V4L2_CID_JPEG_CHROMA_SUBSAMPLING:
|
|
return jpeg_chroma_subsampling;
|
|
case V4L2_CID_DV_TX_MODE:
|
|
return dv_tx_mode;
|
|
case V4L2_CID_DV_TX_RGB_RANGE:
|
|
case V4L2_CID_DV_RX_RGB_RANGE:
|
|
return dv_rgb_range;
|
|
case V4L2_CID_DV_TX_IT_CONTENT_TYPE:
|
|
case V4L2_CID_DV_RX_IT_CONTENT_TYPE:
|
|
return dv_it_content_type;
|
|
case V4L2_CID_DETECT_MD_MODE:
|
|
return detect_md_mode;
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE:
|
|
return hevc_profile;
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL:
|
|
return hevc_level;
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_TYPE:
|
|
return hevc_hierarchial_coding_type;
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE:
|
|
return hevc_refresh_type;
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD:
|
|
return hevc_size_of_length_field;
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_TIER:
|
|
return hevc_tier;
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_LOOP_FILTER_MODE:
|
|
return hevc_loop_filter_mode;
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE:
|
|
return hevc_decode_mode;
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE:
|
|
return hevc_start_code;
|
|
case V4L2_CID_CAMERA_ORIENTATION:
|
|
return camera_orientation;
|
|
default:
|
|
return NULL;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_get_menu);
|
|
|
|
#define __v4l2_qmenu_int_len(arr, len) ({ *(len) = ARRAY_SIZE(arr); arr; })
|
|
/*
|
|
* Returns NULL or an s64 type array containing the menu for given
|
|
* control ID. The total number of the menu items is returned in @len.
|
|
*/
|
|
const s64 *v4l2_ctrl_get_int_menu(u32 id, u32 *len)
|
|
{
|
|
static const s64 qmenu_int_vpx_num_partitions[] = {
|
|
1, 2, 4, 8,
|
|
};
|
|
|
|
static const s64 qmenu_int_vpx_num_ref_frames[] = {
|
|
1, 2, 3,
|
|
};
|
|
|
|
switch (id) {
|
|
case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS:
|
|
return __v4l2_qmenu_int_len(qmenu_int_vpx_num_partitions, len);
|
|
case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES:
|
|
return __v4l2_qmenu_int_len(qmenu_int_vpx_num_ref_frames, len);
|
|
default:
|
|
*len = 0;
|
|
return NULL;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_get_int_menu);
|
|
|
|
/* Return the control name. */
|
|
const char *v4l2_ctrl_get_name(u32 id)
|
|
{
|
|
switch (id) {
|
|
/* USER controls */
|
|
/* Keep the order of the 'case's the same as in v4l2-controls.h! */
|
|
case V4L2_CID_USER_CLASS: return "User Controls";
|
|
case V4L2_CID_BRIGHTNESS: return "Brightness";
|
|
case V4L2_CID_CONTRAST: return "Contrast";
|
|
case V4L2_CID_SATURATION: return "Saturation";
|
|
case V4L2_CID_HUE: return "Hue";
|
|
case V4L2_CID_AUDIO_VOLUME: return "Volume";
|
|
case V4L2_CID_AUDIO_BALANCE: return "Balance";
|
|
case V4L2_CID_AUDIO_BASS: return "Bass";
|
|
case V4L2_CID_AUDIO_TREBLE: return "Treble";
|
|
case V4L2_CID_AUDIO_MUTE: return "Mute";
|
|
case V4L2_CID_AUDIO_LOUDNESS: return "Loudness";
|
|
case V4L2_CID_BLACK_LEVEL: return "Black Level";
|
|
case V4L2_CID_AUTO_WHITE_BALANCE: return "White Balance, Automatic";
|
|
case V4L2_CID_DO_WHITE_BALANCE: return "Do White Balance";
|
|
case V4L2_CID_RED_BALANCE: return "Red Balance";
|
|
case V4L2_CID_BLUE_BALANCE: return "Blue Balance";
|
|
case V4L2_CID_GAMMA: return "Gamma";
|
|
case V4L2_CID_EXPOSURE: return "Exposure";
|
|
case V4L2_CID_AUTOGAIN: return "Gain, Automatic";
|
|
case V4L2_CID_GAIN: return "Gain";
|
|
case V4L2_CID_HFLIP: return "Horizontal Flip";
|
|
case V4L2_CID_VFLIP: return "Vertical Flip";
|
|
case V4L2_CID_POWER_LINE_FREQUENCY: return "Power Line Frequency";
|
|
case V4L2_CID_HUE_AUTO: return "Hue, Automatic";
|
|
case V4L2_CID_WHITE_BALANCE_TEMPERATURE: return "White Balance Temperature";
|
|
case V4L2_CID_SHARPNESS: return "Sharpness";
|
|
case V4L2_CID_BACKLIGHT_COMPENSATION: return "Backlight Compensation";
|
|
case V4L2_CID_CHROMA_AGC: return "Chroma AGC";
|
|
case V4L2_CID_COLOR_KILLER: return "Color Killer";
|
|
case V4L2_CID_COLORFX: return "Color Effects";
|
|
case V4L2_CID_AUTOBRIGHTNESS: return "Brightness, Automatic";
|
|
case V4L2_CID_BAND_STOP_FILTER: return "Band-Stop Filter";
|
|
case V4L2_CID_ROTATE: return "Rotate";
|
|
case V4L2_CID_BG_COLOR: return "Background Color";
|
|
case V4L2_CID_CHROMA_GAIN: return "Chroma Gain";
|
|
case V4L2_CID_ILLUMINATORS_1: return "Illuminator 1";
|
|
case V4L2_CID_ILLUMINATORS_2: return "Illuminator 2";
|
|
case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE: return "Min Number of Capture Buffers";
|
|
case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT: return "Min Number of Output Buffers";
|
|
case V4L2_CID_ALPHA_COMPONENT: return "Alpha Component";
|
|
case V4L2_CID_COLORFX_CBCR: return "Color Effects, CbCr";
|
|
|
|
/* Codec controls */
|
|
/* The MPEG controls are applicable to all codec controls
|
|
* and the 'MPEG' part of the define is historical */
|
|
/* Keep the order of the 'case's the same as in videodev2.h! */
|
|
case V4L2_CID_CODEC_CLASS: return "Codec Controls";
|
|
case V4L2_CID_MPEG_STREAM_TYPE: return "Stream Type";
|
|
case V4L2_CID_MPEG_STREAM_PID_PMT: return "Stream PMT Program ID";
|
|
case V4L2_CID_MPEG_STREAM_PID_AUDIO: return "Stream Audio Program ID";
|
|
case V4L2_CID_MPEG_STREAM_PID_VIDEO: return "Stream Video Program ID";
|
|
case V4L2_CID_MPEG_STREAM_PID_PCR: return "Stream PCR Program ID";
|
|
case V4L2_CID_MPEG_STREAM_PES_ID_AUDIO: return "Stream PES Audio ID";
|
|
case V4L2_CID_MPEG_STREAM_PES_ID_VIDEO: return "Stream PES Video ID";
|
|
case V4L2_CID_MPEG_STREAM_VBI_FMT: return "Stream VBI Format";
|
|
case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ: return "Audio Sampling Frequency";
|
|
case V4L2_CID_MPEG_AUDIO_ENCODING: return "Audio Encoding";
|
|
case V4L2_CID_MPEG_AUDIO_L1_BITRATE: return "Audio Layer I Bitrate";
|
|
case V4L2_CID_MPEG_AUDIO_L2_BITRATE: return "Audio Layer II Bitrate";
|
|
case V4L2_CID_MPEG_AUDIO_L3_BITRATE: return "Audio Layer III Bitrate";
|
|
case V4L2_CID_MPEG_AUDIO_MODE: return "Audio Stereo Mode";
|
|
case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION: return "Audio Stereo Mode Extension";
|
|
case V4L2_CID_MPEG_AUDIO_EMPHASIS: return "Audio Emphasis";
|
|
case V4L2_CID_MPEG_AUDIO_CRC: return "Audio CRC";
|
|
case V4L2_CID_MPEG_AUDIO_MUTE: return "Audio Mute";
|
|
case V4L2_CID_MPEG_AUDIO_AAC_BITRATE: return "Audio AAC Bitrate";
|
|
case V4L2_CID_MPEG_AUDIO_AC3_BITRATE: return "Audio AC-3 Bitrate";
|
|
case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK: return "Audio Playback";
|
|
case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK: return "Audio Multilingual Playback";
|
|
case V4L2_CID_MPEG_VIDEO_ENCODING: return "Video Encoding";
|
|
case V4L2_CID_MPEG_VIDEO_ASPECT: return "Video Aspect";
|
|
case V4L2_CID_MPEG_VIDEO_B_FRAMES: return "Video B Frames";
|
|
case V4L2_CID_MPEG_VIDEO_GOP_SIZE: return "Video GOP Size";
|
|
case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE: return "Video GOP Closure";
|
|
case V4L2_CID_MPEG_VIDEO_PULLDOWN: return "Video Pulldown";
|
|
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE: return "Video Bitrate Mode";
|
|
case V4L2_CID_MPEG_VIDEO_CONSTANT_QUALITY: return "Constant Quality";
|
|
case V4L2_CID_MPEG_VIDEO_BITRATE: return "Video Bitrate";
|
|
case V4L2_CID_MPEG_VIDEO_BITRATE_PEAK: return "Video Peak Bitrate";
|
|
case V4L2_CID_MPEG_VIDEO_TEMPORAL_DECIMATION: return "Video Temporal Decimation";
|
|
case V4L2_CID_MPEG_VIDEO_MUTE: return "Video Mute";
|
|
case V4L2_CID_MPEG_VIDEO_MUTE_YUV: return "Video Mute YUV";
|
|
case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE: return "Decoder Slice Interface";
|
|
case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER: return "MPEG4 Loop Filter Enable";
|
|
case V4L2_CID_MPEG_VIDEO_CYCLIC_INTRA_REFRESH_MB: return "Number of Intra Refresh MBs";
|
|
case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE: return "Frame Level Rate Control Enable";
|
|
case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE: return "H264 MB Level Rate Control";
|
|
case V4L2_CID_MPEG_VIDEO_HEADER_MODE: return "Sequence Header Mode";
|
|
case V4L2_CID_MPEG_VIDEO_MAX_REF_PIC: return "Max Number of Reference Pics";
|
|
case V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE: return "Frame Skip Mode";
|
|
case V4L2_CID_MPEG_VIDEO_H263_I_FRAME_QP: return "H263 I-Frame QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_H263_P_FRAME_QP: return "H263 P-Frame QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_H263_B_FRAME_QP: return "H263 B-Frame QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_H263_MIN_QP: return "H263 Minimum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_H263_MAX_QP: return "H263 Maximum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP: return "H264 I-Frame QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP: return "H264 P-Frame QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_QP: return "H264 B-Frame QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_H264_MAX_QP: return "H264 Maximum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_H264_MIN_QP: return "H264 Minimum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM: return "H264 8x8 Transform Enable";
|
|
case V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE: return "H264 CPB Buffer Size";
|
|
case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE: return "H264 Entropy Mode";
|
|
case V4L2_CID_MPEG_VIDEO_H264_I_PERIOD: return "H264 I-Frame Period";
|
|
case V4L2_CID_MPEG_VIDEO_H264_LEVEL: return "H264 Level";
|
|
case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_ALPHA: return "H264 Loop Filter Alpha Offset";
|
|
case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_BETA: return "H264 Loop Filter Beta Offset";
|
|
case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE: return "H264 Loop Filter Mode";
|
|
case V4L2_CID_MPEG_VIDEO_H264_PROFILE: return "H264 Profile";
|
|
case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_HEIGHT: return "Vertical Size of SAR";
|
|
case V4L2_CID_MPEG_VIDEO_H264_VUI_EXT_SAR_WIDTH: return "Horizontal Size of SAR";
|
|
case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE: return "Aspect Ratio VUI Enable";
|
|
case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC: return "VUI Aspect Ratio IDC";
|
|
case V4L2_CID_MPEG_VIDEO_H264_SEI_FRAME_PACKING: return "H264 Enable Frame Packing SEI";
|
|
case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_CURRENT_FRAME_0: return "H264 Set Curr. Frame as Frame0";
|
|
case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE: return "H264 FP Arrangement Type";
|
|
case V4L2_CID_MPEG_VIDEO_H264_FMO: return "H264 Flexible MB Ordering";
|
|
case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE: return "H264 Map Type for FMO";
|
|
case V4L2_CID_MPEG_VIDEO_H264_FMO_SLICE_GROUP: return "H264 FMO Number of Slice Groups";
|
|
case V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_DIRECTION: return "H264 FMO Direction of Change";
|
|
case V4L2_CID_MPEG_VIDEO_H264_FMO_CHANGE_RATE: return "H264 FMO Size of 1st Slice Grp";
|
|
case V4L2_CID_MPEG_VIDEO_H264_FMO_RUN_LENGTH: return "H264 FMO No. of Consecutive MBs";
|
|
case V4L2_CID_MPEG_VIDEO_H264_ASO: return "H264 Arbitrary Slice Ordering";
|
|
case V4L2_CID_MPEG_VIDEO_H264_ASO_SLICE_ORDER: return "H264 ASO Slice Order";
|
|
case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING: return "Enable H264 Hierarchical Coding";
|
|
case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_TYPE: return "H264 Hierarchical Coding Type";
|
|
case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER:return "H264 Number of HC Layers";
|
|
case V4L2_CID_MPEG_VIDEO_H264_HIERARCHICAL_CODING_LAYER_QP:
|
|
return "H264 Set QP Value for HC Layers";
|
|
case V4L2_CID_MPEG_VIDEO_H264_CONSTRAINED_INTRA_PREDICTION:
|
|
return "H264 Constrained Intra Pred";
|
|
case V4L2_CID_MPEG_VIDEO_H264_CHROMA_QP_INDEX_OFFSET: return "H264 Chroma QP Index Offset";
|
|
case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_MIN_QP: return "H264 I-Frame Minimum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_MAX_QP: return "H264 I-Frame Maximum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_MIN_QP: return "H264 P-Frame Minimum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_MAX_QP: return "H264 P-Frame Maximum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MIN_QP: return "H264 B-Frame Minimum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_MAX_QP: return "H264 B-Frame Maximum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L0_BR: return "H264 Hierarchical Lay 0 Bitrate";
|
|
case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L1_BR: return "H264 Hierarchical Lay 1 Bitrate";
|
|
case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L2_BR: return "H264 Hierarchical Lay 2 Bitrate";
|
|
case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L3_BR: return "H264 Hierarchical Lay 3 Bitrate";
|
|
case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L4_BR: return "H264 Hierarchical Lay 4 Bitrate";
|
|
case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L5_BR: return "H264 Hierarchical Lay 5 Bitrate";
|
|
case V4L2_CID_MPEG_VIDEO_H264_HIER_CODING_L6_BR: return "H264 Hierarchical Lay 6 Bitrate";
|
|
case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL: return "MPEG2 Level";
|
|
case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE: return "MPEG2 Profile";
|
|
case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP: return "MPEG4 I-Frame QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP: return "MPEG4 P-Frame QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_MPEG4_B_FRAME_QP: return "MPEG4 B-Frame QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_MPEG4_MIN_QP: return "MPEG4 Minimum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_MPEG4_MAX_QP: return "MPEG4 Maximum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL: return "MPEG4 Level";
|
|
case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE: return "MPEG4 Profile";
|
|
case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL: return "Quarter Pixel Search Enable";
|
|
case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_BYTES: return "Maximum Bytes in a Slice";
|
|
case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB: return "Number of MBs in a Slice";
|
|
case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE: return "Slice Partitioning Method";
|
|
case V4L2_CID_MPEG_VIDEO_VBV_SIZE: return "VBV Buffer Size";
|
|
case V4L2_CID_MPEG_VIDEO_DEC_PTS: return "Video Decoder PTS";
|
|
case V4L2_CID_MPEG_VIDEO_DEC_FRAME: return "Video Decoder Frame Count";
|
|
case V4L2_CID_MPEG_VIDEO_VBV_DELAY: return "Initial Delay for VBV Control";
|
|
case V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE: return "Horizontal MV Search Range";
|
|
case V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE: return "Vertical MV Search Range";
|
|
case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER: return "Repeat Sequence Header";
|
|
case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME: return "Force Key Frame";
|
|
case V4L2_CID_MPEG_VIDEO_BASELAYER_PRIORITY_ID: return "Base Layer Priority ID";
|
|
case V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS: return "MPEG-2 Slice Parameters";
|
|
case V4L2_CID_MPEG_VIDEO_MPEG2_QUANTIZATION: return "MPEG-2 Quantization Matrices";
|
|
case V4L2_CID_FWHT_I_FRAME_QP: return "FWHT I-Frame QP Value";
|
|
case V4L2_CID_FWHT_P_FRAME_QP: return "FWHT P-Frame QP Value";
|
|
|
|
/* VPX controls */
|
|
case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS: return "VPX Number of Partitions";
|
|
case V4L2_CID_MPEG_VIDEO_VPX_IMD_DISABLE_4X4: return "VPX Intra Mode Decision Disable";
|
|
case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES: return "VPX No. of Refs for P Frame";
|
|
case V4L2_CID_MPEG_VIDEO_VPX_FILTER_LEVEL: return "VPX Loop Filter Level Range";
|
|
case V4L2_CID_MPEG_VIDEO_VPX_FILTER_SHARPNESS: return "VPX Deblocking Effect Control";
|
|
case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_REF_PERIOD: return "VPX Golden Frame Refresh Period";
|
|
case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL: return "VPX Golden Frame Indicator";
|
|
case V4L2_CID_MPEG_VIDEO_VPX_MIN_QP: return "VPX Minimum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_VPX_MAX_QP: return "VPX Maximum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_VPX_I_FRAME_QP: return "VPX I-Frame QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_VPX_P_FRAME_QP: return "VPX P-Frame QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_VP8_PROFILE: return "VP8 Profile";
|
|
case V4L2_CID_MPEG_VIDEO_VP9_PROFILE: return "VP9 Profile";
|
|
case V4L2_CID_MPEG_VIDEO_VP9_LEVEL: return "VP9 Level";
|
|
case V4L2_CID_MPEG_VIDEO_VP8_FRAME_HEADER: return "VP8 Frame Header";
|
|
|
|
/* HEVC controls */
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_QP: return "HEVC I-Frame QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_QP: return "HEVC P-Frame QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_QP: return "HEVC B-Frame QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP: return "HEVC Minimum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP: return "HEVC Maximum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MIN_QP: return "HEVC I-Frame Minimum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_MAX_QP: return "HEVC I-Frame Maximum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MIN_QP: return "HEVC P-Frame Minimum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_MAX_QP: return "HEVC P-Frame Maximum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MIN_QP: return "HEVC B-Frame Minimum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_MAX_QP: return "HEVC B-Frame Maximum QP Value";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE: return "HEVC Profile";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL: return "HEVC Level";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_TIER: return "HEVC Tier";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_FRAME_RATE_RESOLUTION: return "HEVC Frame Rate Resolution";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_MAX_PARTITION_DEPTH: return "HEVC Maximum Coding Unit Depth";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE: return "HEVC Refresh Type";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_CONST_INTRA_PRED: return "HEVC Constant Intra Prediction";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_LOSSLESS_CU: return "HEVC Lossless Encoding";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_WAVEFRONT: return "HEVC Wavefront";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_LOOP_FILTER_MODE: return "HEVC Loop Filter";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_HIER_QP: return "HEVC QP Values";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_TYPE: return "HEVC Hierarchical Coding Type";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_LAYER: return "HEVC Hierarchical Coding Layer";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L0_QP: return "HEVC Hierarchical Layer 0 QP";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L1_QP: return "HEVC Hierarchical Layer 1 QP";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L2_QP: return "HEVC Hierarchical Layer 2 QP";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L3_QP: return "HEVC Hierarchical Layer 3 QP";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L4_QP: return "HEVC Hierarchical Layer 4 QP";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L5_QP: return "HEVC Hierarchical Layer 5 QP";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L6_QP: return "HEVC Hierarchical Layer 6 QP";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L0_BR: return "HEVC Hierarchical Lay 0 BitRate";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L1_BR: return "HEVC Hierarchical Lay 1 BitRate";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L2_BR: return "HEVC Hierarchical Lay 2 BitRate";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L3_BR: return "HEVC Hierarchical Lay 3 BitRate";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L4_BR: return "HEVC Hierarchical Lay 4 BitRate";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L5_BR: return "HEVC Hierarchical Lay 5 BitRate";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_L6_BR: return "HEVC Hierarchical Lay 6 BitRate";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_GENERAL_PB: return "HEVC General PB";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_TEMPORAL_ID: return "HEVC Temporal ID";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_STRONG_SMOOTHING: return "HEVC Strong Intra Smoothing";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_INTRA_PU_SPLIT: return "HEVC Intra PU Split";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_TMV_PREDICTION: return "HEVC TMV Prediction";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_MAX_NUM_MERGE_MV_MINUS1: return "HEVC Max Num of Candidate MVs";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_WITHOUT_STARTCODE: return "HEVC ENC Without Startcode";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_PERIOD: return "HEVC Num of I-Frame b/w 2 IDR";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_LF_BETA_OFFSET_DIV2: return "HEVC Loop Filter Beta Offset";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_LF_TC_OFFSET_DIV2: return "HEVC Loop Filter TC Offset";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD: return "HEVC Size of Length Field";
|
|
case V4L2_CID_MPEG_VIDEO_REF_NUMBER_FOR_PFRAMES: return "Reference Frames for a P-Frame";
|
|
case V4L2_CID_MPEG_VIDEO_PREPEND_SPSPPS_TO_IDR: return "Prepend SPS and PPS to IDR";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_SPS: return "HEVC Sequence Parameter Set";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_PPS: return "HEVC Picture Parameter Set";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS: return "HEVC Slice Parameters";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE: return "HEVC Decode Mode";
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE: return "HEVC Start Code";
|
|
|
|
/* CAMERA controls */
|
|
/* Keep the order of the 'case's the same as in v4l2-controls.h! */
|
|
case V4L2_CID_CAMERA_CLASS: return "Camera Controls";
|
|
case V4L2_CID_EXPOSURE_AUTO: return "Auto Exposure";
|
|
case V4L2_CID_EXPOSURE_ABSOLUTE: return "Exposure Time, Absolute";
|
|
case V4L2_CID_EXPOSURE_AUTO_PRIORITY: return "Exposure, Dynamic Framerate";
|
|
case V4L2_CID_PAN_RELATIVE: return "Pan, Relative";
|
|
case V4L2_CID_TILT_RELATIVE: return "Tilt, Relative";
|
|
case V4L2_CID_PAN_RESET: return "Pan, Reset";
|
|
case V4L2_CID_TILT_RESET: return "Tilt, Reset";
|
|
case V4L2_CID_PAN_ABSOLUTE: return "Pan, Absolute";
|
|
case V4L2_CID_TILT_ABSOLUTE: return "Tilt, Absolute";
|
|
case V4L2_CID_FOCUS_ABSOLUTE: return "Focus, Absolute";
|
|
case V4L2_CID_FOCUS_RELATIVE: return "Focus, Relative";
|
|
case V4L2_CID_FOCUS_AUTO: return "Focus, Automatic Continuous";
|
|
case V4L2_CID_ZOOM_ABSOLUTE: return "Zoom, Absolute";
|
|
case V4L2_CID_ZOOM_RELATIVE: return "Zoom, Relative";
|
|
case V4L2_CID_ZOOM_CONTINUOUS: return "Zoom, Continuous";
|
|
case V4L2_CID_PRIVACY: return "Privacy";
|
|
case V4L2_CID_IRIS_ABSOLUTE: return "Iris, Absolute";
|
|
case V4L2_CID_IRIS_RELATIVE: return "Iris, Relative";
|
|
case V4L2_CID_AUTO_EXPOSURE_BIAS: return "Auto Exposure, Bias";
|
|
case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE: return "White Balance, Auto & Preset";
|
|
case V4L2_CID_WIDE_DYNAMIC_RANGE: return "Wide Dynamic Range";
|
|
case V4L2_CID_IMAGE_STABILIZATION: return "Image Stabilization";
|
|
case V4L2_CID_ISO_SENSITIVITY: return "ISO Sensitivity";
|
|
case V4L2_CID_ISO_SENSITIVITY_AUTO: return "ISO Sensitivity, Auto";
|
|
case V4L2_CID_EXPOSURE_METERING: return "Exposure, Metering Mode";
|
|
case V4L2_CID_SCENE_MODE: return "Scene Mode";
|
|
case V4L2_CID_3A_LOCK: return "3A Lock";
|
|
case V4L2_CID_AUTO_FOCUS_START: return "Auto Focus, Start";
|
|
case V4L2_CID_AUTO_FOCUS_STOP: return "Auto Focus, Stop";
|
|
case V4L2_CID_AUTO_FOCUS_STATUS: return "Auto Focus, Status";
|
|
case V4L2_CID_AUTO_FOCUS_RANGE: return "Auto Focus, Range";
|
|
case V4L2_CID_PAN_SPEED: return "Pan, Speed";
|
|
case V4L2_CID_TILT_SPEED: return "Tilt, Speed";
|
|
case V4L2_CID_UNIT_CELL_SIZE: return "Unit Cell Size";
|
|
case V4L2_CID_CAMERA_ORIENTATION: return "Camera Orientation";
|
|
case V4L2_CID_CAMERA_SENSOR_ROTATION: return "Camera Sensor Rotation";
|
|
|
|
/* FM Radio Modulator controls */
|
|
/* Keep the order of the 'case's the same as in v4l2-controls.h! */
|
|
case V4L2_CID_FM_TX_CLASS: return "FM Radio Modulator Controls";
|
|
case V4L2_CID_RDS_TX_DEVIATION: return "RDS Signal Deviation";
|
|
case V4L2_CID_RDS_TX_PI: return "RDS Program ID";
|
|
case V4L2_CID_RDS_TX_PTY: return "RDS Program Type";
|
|
case V4L2_CID_RDS_TX_PS_NAME: return "RDS PS Name";
|
|
case V4L2_CID_RDS_TX_RADIO_TEXT: return "RDS Radio Text";
|
|
case V4L2_CID_RDS_TX_MONO_STEREO: return "RDS Stereo";
|
|
case V4L2_CID_RDS_TX_ARTIFICIAL_HEAD: return "RDS Artificial Head";
|
|
case V4L2_CID_RDS_TX_COMPRESSED: return "RDS Compressed";
|
|
case V4L2_CID_RDS_TX_DYNAMIC_PTY: return "RDS Dynamic PTY";
|
|
case V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT: return "RDS Traffic Announcement";
|
|
case V4L2_CID_RDS_TX_TRAFFIC_PROGRAM: return "RDS Traffic Program";
|
|
case V4L2_CID_RDS_TX_MUSIC_SPEECH: return "RDS Music";
|
|
case V4L2_CID_RDS_TX_ALT_FREQS_ENABLE: return "RDS Enable Alt Frequencies";
|
|
case V4L2_CID_RDS_TX_ALT_FREQS: return "RDS Alternate Frequencies";
|
|
case V4L2_CID_AUDIO_LIMITER_ENABLED: return "Audio Limiter Feature Enabled";
|
|
case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: return "Audio Limiter Release Time";
|
|
case V4L2_CID_AUDIO_LIMITER_DEVIATION: return "Audio Limiter Deviation";
|
|
case V4L2_CID_AUDIO_COMPRESSION_ENABLED: return "Audio Compression Enabled";
|
|
case V4L2_CID_AUDIO_COMPRESSION_GAIN: return "Audio Compression Gain";
|
|
case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: return "Audio Compression Threshold";
|
|
case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: return "Audio Compression Attack Time";
|
|
case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: return "Audio Compression Release Time";
|
|
case V4L2_CID_PILOT_TONE_ENABLED: return "Pilot Tone Feature Enabled";
|
|
case V4L2_CID_PILOT_TONE_DEVIATION: return "Pilot Tone Deviation";
|
|
case V4L2_CID_PILOT_TONE_FREQUENCY: return "Pilot Tone Frequency";
|
|
case V4L2_CID_TUNE_PREEMPHASIS: return "Pre-Emphasis";
|
|
case V4L2_CID_TUNE_POWER_LEVEL: return "Tune Power Level";
|
|
case V4L2_CID_TUNE_ANTENNA_CAPACITOR: return "Tune Antenna Capacitor";
|
|
|
|
/* Flash controls */
|
|
/* Keep the order of the 'case's the same as in v4l2-controls.h! */
|
|
case V4L2_CID_FLASH_CLASS: return "Flash Controls";
|
|
case V4L2_CID_FLASH_LED_MODE: return "LED Mode";
|
|
case V4L2_CID_FLASH_STROBE_SOURCE: return "Strobe Source";
|
|
case V4L2_CID_FLASH_STROBE: return "Strobe";
|
|
case V4L2_CID_FLASH_STROBE_STOP: return "Stop Strobe";
|
|
case V4L2_CID_FLASH_STROBE_STATUS: return "Strobe Status";
|
|
case V4L2_CID_FLASH_TIMEOUT: return "Strobe Timeout";
|
|
case V4L2_CID_FLASH_INTENSITY: return "Intensity, Flash Mode";
|
|
case V4L2_CID_FLASH_TORCH_INTENSITY: return "Intensity, Torch Mode";
|
|
case V4L2_CID_FLASH_INDICATOR_INTENSITY: return "Intensity, Indicator";
|
|
case V4L2_CID_FLASH_FAULT: return "Faults";
|
|
case V4L2_CID_FLASH_CHARGE: return "Charge";
|
|
case V4L2_CID_FLASH_READY: return "Ready to Strobe";
|
|
|
|
/* JPEG encoder controls */
|
|
/* Keep the order of the 'case's the same as in v4l2-controls.h! */
|
|
case V4L2_CID_JPEG_CLASS: return "JPEG Compression Controls";
|
|
case V4L2_CID_JPEG_CHROMA_SUBSAMPLING: return "Chroma Subsampling";
|
|
case V4L2_CID_JPEG_RESTART_INTERVAL: return "Restart Interval";
|
|
case V4L2_CID_JPEG_COMPRESSION_QUALITY: return "Compression Quality";
|
|
case V4L2_CID_JPEG_ACTIVE_MARKER: return "Active Markers";
|
|
|
|
/* Image source controls */
|
|
/* Keep the order of the 'case's the same as in v4l2-controls.h! */
|
|
case V4L2_CID_IMAGE_SOURCE_CLASS: return "Image Source Controls";
|
|
case V4L2_CID_VBLANK: return "Vertical Blanking";
|
|
case V4L2_CID_HBLANK: return "Horizontal Blanking";
|
|
case V4L2_CID_ANALOGUE_GAIN: return "Analogue Gain";
|
|
case V4L2_CID_TEST_PATTERN_RED: return "Red Pixel Value";
|
|
case V4L2_CID_TEST_PATTERN_GREENR: return "Green (Red) Pixel Value";
|
|
case V4L2_CID_TEST_PATTERN_BLUE: return "Blue Pixel Value";
|
|
case V4L2_CID_TEST_PATTERN_GREENB: return "Green (Blue) Pixel Value";
|
|
|
|
/* Image processing controls */
|
|
/* Keep the order of the 'case's the same as in v4l2-controls.h! */
|
|
case V4L2_CID_IMAGE_PROC_CLASS: return "Image Processing Controls";
|
|
case V4L2_CID_LINK_FREQ: return "Link Frequency";
|
|
case V4L2_CID_PIXEL_RATE: return "Pixel Rate";
|
|
case V4L2_CID_TEST_PATTERN: return "Test Pattern";
|
|
case V4L2_CID_DEINTERLACING_MODE: return "Deinterlacing Mode";
|
|
case V4L2_CID_DIGITAL_GAIN: return "Digital Gain";
|
|
|
|
/* DV controls */
|
|
/* Keep the order of the 'case's the same as in v4l2-controls.h! */
|
|
case V4L2_CID_DV_CLASS: return "Digital Video Controls";
|
|
case V4L2_CID_DV_TX_HOTPLUG: return "Hotplug Present";
|
|
case V4L2_CID_DV_TX_RXSENSE: return "RxSense Present";
|
|
case V4L2_CID_DV_TX_EDID_PRESENT: return "EDID Present";
|
|
case V4L2_CID_DV_TX_MODE: return "Transmit Mode";
|
|
case V4L2_CID_DV_TX_RGB_RANGE: return "Tx RGB Quantization Range";
|
|
case V4L2_CID_DV_TX_IT_CONTENT_TYPE: return "Tx IT Content Type";
|
|
case V4L2_CID_DV_RX_POWER_PRESENT: return "Power Present";
|
|
case V4L2_CID_DV_RX_RGB_RANGE: return "Rx RGB Quantization Range";
|
|
case V4L2_CID_DV_RX_IT_CONTENT_TYPE: return "Rx IT Content Type";
|
|
|
|
case V4L2_CID_FM_RX_CLASS: return "FM Radio Receiver Controls";
|
|
case V4L2_CID_TUNE_DEEMPHASIS: return "De-Emphasis";
|
|
case V4L2_CID_RDS_RECEPTION: return "RDS Reception";
|
|
case V4L2_CID_RF_TUNER_CLASS: return "RF Tuner Controls";
|
|
case V4L2_CID_RF_TUNER_RF_GAIN: return "RF Gain";
|
|
case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO: return "LNA Gain, Auto";
|
|
case V4L2_CID_RF_TUNER_LNA_GAIN: return "LNA Gain";
|
|
case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO: return "Mixer Gain, Auto";
|
|
case V4L2_CID_RF_TUNER_MIXER_GAIN: return "Mixer Gain";
|
|
case V4L2_CID_RF_TUNER_IF_GAIN_AUTO: return "IF Gain, Auto";
|
|
case V4L2_CID_RF_TUNER_IF_GAIN: return "IF Gain";
|
|
case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO: return "Bandwidth, Auto";
|
|
case V4L2_CID_RF_TUNER_BANDWIDTH: return "Bandwidth";
|
|
case V4L2_CID_RF_TUNER_PLL_LOCK: return "PLL Lock";
|
|
case V4L2_CID_RDS_RX_PTY: return "RDS Program Type";
|
|
case V4L2_CID_RDS_RX_PS_NAME: return "RDS PS Name";
|
|
case V4L2_CID_RDS_RX_RADIO_TEXT: return "RDS Radio Text";
|
|
case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT: return "RDS Traffic Announcement";
|
|
case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM: return "RDS Traffic Program";
|
|
case V4L2_CID_RDS_RX_MUSIC_SPEECH: return "RDS Music";
|
|
|
|
/* Detection controls */
|
|
/* Keep the order of the 'case's the same as in v4l2-controls.h! */
|
|
case V4L2_CID_DETECT_CLASS: return "Detection Controls";
|
|
case V4L2_CID_DETECT_MD_MODE: return "Motion Detection Mode";
|
|
case V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD: return "MD Global Threshold";
|
|
case V4L2_CID_DETECT_MD_THRESHOLD_GRID: return "MD Threshold Grid";
|
|
case V4L2_CID_DETECT_MD_REGION_GRID: return "MD Region Grid";
|
|
|
|
/* Stateless Codec controls */
|
|
/* Keep the order of the 'case's the same as in v4l2-controls.h! */
|
|
case V4L2_CID_CODEC_STATELESS_CLASS: return "Stateless Codec Controls";
|
|
case V4L2_CID_STATELESS_H264_DECODE_MODE: return "H264 Decode Mode";
|
|
case V4L2_CID_STATELESS_H264_START_CODE: return "H264 Start Code";
|
|
case V4L2_CID_STATELESS_H264_SPS: return "H264 Sequence Parameter Set";
|
|
case V4L2_CID_STATELESS_H264_PPS: return "H264 Picture Parameter Set";
|
|
case V4L2_CID_STATELESS_H264_SCALING_MATRIX: return "H264 Scaling Matrix";
|
|
case V4L2_CID_STATELESS_H264_PRED_WEIGHTS: return "H264 Prediction Weight Table";
|
|
case V4L2_CID_STATELESS_H264_SLICE_PARAMS: return "H264 Slice Parameters";
|
|
case V4L2_CID_STATELESS_H264_DECODE_PARAMS: return "H264 Decode Parameters";
|
|
case V4L2_CID_STATELESS_FWHT_PARAMS: return "FWHT Stateless Parameters";
|
|
default:
|
|
return NULL;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_get_name);
|
|
|
|
void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
|
|
s64 *min, s64 *max, u64 *step, s64 *def, u32 *flags)
|
|
{
|
|
*name = v4l2_ctrl_get_name(id);
|
|
*flags = 0;
|
|
|
|
switch (id) {
|
|
case V4L2_CID_AUDIO_MUTE:
|
|
case V4L2_CID_AUDIO_LOUDNESS:
|
|
case V4L2_CID_AUTO_WHITE_BALANCE:
|
|
case V4L2_CID_AUTOGAIN:
|
|
case V4L2_CID_HFLIP:
|
|
case V4L2_CID_VFLIP:
|
|
case V4L2_CID_HUE_AUTO:
|
|
case V4L2_CID_CHROMA_AGC:
|
|
case V4L2_CID_COLOR_KILLER:
|
|
case V4L2_CID_AUTOBRIGHTNESS:
|
|
case V4L2_CID_MPEG_AUDIO_MUTE:
|
|
case V4L2_CID_MPEG_VIDEO_MUTE:
|
|
case V4L2_CID_MPEG_VIDEO_GOP_CLOSURE:
|
|
case V4L2_CID_MPEG_VIDEO_PULLDOWN:
|
|
case V4L2_CID_EXPOSURE_AUTO_PRIORITY:
|
|
case V4L2_CID_FOCUS_AUTO:
|
|
case V4L2_CID_PRIVACY:
|
|
case V4L2_CID_AUDIO_LIMITER_ENABLED:
|
|
case V4L2_CID_AUDIO_COMPRESSION_ENABLED:
|
|
case V4L2_CID_PILOT_TONE_ENABLED:
|
|
case V4L2_CID_ILLUMINATORS_1:
|
|
case V4L2_CID_ILLUMINATORS_2:
|
|
case V4L2_CID_FLASH_STROBE_STATUS:
|
|
case V4L2_CID_FLASH_CHARGE:
|
|
case V4L2_CID_FLASH_READY:
|
|
case V4L2_CID_MPEG_VIDEO_DECODER_MPEG4_DEBLOCK_FILTER:
|
|
case V4L2_CID_MPEG_VIDEO_DECODER_SLICE_INTERFACE:
|
|
case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE:
|
|
case V4L2_CID_MPEG_VIDEO_MB_RC_ENABLE:
|
|
case V4L2_CID_MPEG_VIDEO_H264_8X8_TRANSFORM:
|
|
case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_ENABLE:
|
|
case V4L2_CID_MPEG_VIDEO_MPEG4_QPEL:
|
|
case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER:
|
|
case V4L2_CID_WIDE_DYNAMIC_RANGE:
|
|
case V4L2_CID_IMAGE_STABILIZATION:
|
|
case V4L2_CID_RDS_RECEPTION:
|
|
case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO:
|
|
case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO:
|
|
case V4L2_CID_RF_TUNER_IF_GAIN_AUTO:
|
|
case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:
|
|
case V4L2_CID_RF_TUNER_PLL_LOCK:
|
|
case V4L2_CID_RDS_TX_MONO_STEREO:
|
|
case V4L2_CID_RDS_TX_ARTIFICIAL_HEAD:
|
|
case V4L2_CID_RDS_TX_COMPRESSED:
|
|
case V4L2_CID_RDS_TX_DYNAMIC_PTY:
|
|
case V4L2_CID_RDS_TX_TRAFFIC_ANNOUNCEMENT:
|
|
case V4L2_CID_RDS_TX_TRAFFIC_PROGRAM:
|
|
case V4L2_CID_RDS_TX_MUSIC_SPEECH:
|
|
case V4L2_CID_RDS_TX_ALT_FREQS_ENABLE:
|
|
case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT:
|
|
case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM:
|
|
case V4L2_CID_RDS_RX_MUSIC_SPEECH:
|
|
*type = V4L2_CTRL_TYPE_BOOLEAN;
|
|
*min = 0;
|
|
*max = *step = 1;
|
|
break;
|
|
case V4L2_CID_ROTATE:
|
|
*type = V4L2_CTRL_TYPE_INTEGER;
|
|
*flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
|
|
break;
|
|
case V4L2_CID_MPEG_VIDEO_MV_H_SEARCH_RANGE:
|
|
case V4L2_CID_MPEG_VIDEO_MV_V_SEARCH_RANGE:
|
|
*type = V4L2_CTRL_TYPE_INTEGER;
|
|
break;
|
|
case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:
|
|
case V4L2_CID_PAN_RESET:
|
|
case V4L2_CID_TILT_RESET:
|
|
case V4L2_CID_FLASH_STROBE:
|
|
case V4L2_CID_FLASH_STROBE_STOP:
|
|
case V4L2_CID_AUTO_FOCUS_START:
|
|
case V4L2_CID_AUTO_FOCUS_STOP:
|
|
case V4L2_CID_DO_WHITE_BALANCE:
|
|
*type = V4L2_CTRL_TYPE_BUTTON;
|
|
*flags |= V4L2_CTRL_FLAG_WRITE_ONLY |
|
|
V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
|
|
*min = *max = *step = *def = 0;
|
|
break;
|
|
case V4L2_CID_POWER_LINE_FREQUENCY:
|
|
case V4L2_CID_MPEG_AUDIO_SAMPLING_FREQ:
|
|
case V4L2_CID_MPEG_AUDIO_ENCODING:
|
|
case V4L2_CID_MPEG_AUDIO_L1_BITRATE:
|
|
case V4L2_CID_MPEG_AUDIO_L2_BITRATE:
|
|
case V4L2_CID_MPEG_AUDIO_L3_BITRATE:
|
|
case V4L2_CID_MPEG_AUDIO_AC3_BITRATE:
|
|
case V4L2_CID_MPEG_AUDIO_MODE:
|
|
case V4L2_CID_MPEG_AUDIO_MODE_EXTENSION:
|
|
case V4L2_CID_MPEG_AUDIO_EMPHASIS:
|
|
case V4L2_CID_MPEG_AUDIO_CRC:
|
|
case V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK:
|
|
case V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK:
|
|
case V4L2_CID_MPEG_VIDEO_ENCODING:
|
|
case V4L2_CID_MPEG_VIDEO_ASPECT:
|
|
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
|
|
case V4L2_CID_MPEG_STREAM_TYPE:
|
|
case V4L2_CID_MPEG_STREAM_VBI_FMT:
|
|
case V4L2_CID_EXPOSURE_AUTO:
|
|
case V4L2_CID_AUTO_FOCUS_RANGE:
|
|
case V4L2_CID_COLORFX:
|
|
case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE:
|
|
case V4L2_CID_TUNE_PREEMPHASIS:
|
|
case V4L2_CID_FLASH_LED_MODE:
|
|
case V4L2_CID_FLASH_STROBE_SOURCE:
|
|
case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
|
|
case V4L2_CID_MPEG_VIDEO_FRAME_SKIP_MODE:
|
|
case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
|
|
case V4L2_CID_MPEG_VIDEO_H264_ENTROPY_MODE:
|
|
case V4L2_CID_MPEG_VIDEO_H264_LEVEL:
|
|
case V4L2_CID_MPEG_VIDEO_H264_LOOP_FILTER_MODE:
|
|
case V4L2_CID_MPEG_VIDEO_H264_PROFILE:
|
|
case V4L2_CID_MPEG_VIDEO_H264_VUI_SAR_IDC:
|
|
case V4L2_CID_MPEG_VIDEO_H264_SEI_FP_ARRANGEMENT_TYPE:
|
|
case V4L2_CID_MPEG_VIDEO_H264_FMO_MAP_TYPE:
|
|
case V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL:
|
|
case V4L2_CID_MPEG_VIDEO_MPEG2_PROFILE:
|
|
case V4L2_CID_MPEG_VIDEO_MPEG4_LEVEL:
|
|
case V4L2_CID_MPEG_VIDEO_MPEG4_PROFILE:
|
|
case V4L2_CID_JPEG_CHROMA_SUBSAMPLING:
|
|
case V4L2_CID_ISO_SENSITIVITY_AUTO:
|
|
case V4L2_CID_EXPOSURE_METERING:
|
|
case V4L2_CID_SCENE_MODE:
|
|
case V4L2_CID_DV_TX_MODE:
|
|
case V4L2_CID_DV_TX_RGB_RANGE:
|
|
case V4L2_CID_DV_TX_IT_CONTENT_TYPE:
|
|
case V4L2_CID_DV_RX_RGB_RANGE:
|
|
case V4L2_CID_DV_RX_IT_CONTENT_TYPE:
|
|
case V4L2_CID_TEST_PATTERN:
|
|
case V4L2_CID_DEINTERLACING_MODE:
|
|
case V4L2_CID_TUNE_DEEMPHASIS:
|
|
case V4L2_CID_MPEG_VIDEO_VPX_GOLDEN_FRAME_SEL:
|
|
case V4L2_CID_MPEG_VIDEO_VP8_PROFILE:
|
|
case V4L2_CID_MPEG_VIDEO_VP9_PROFILE:
|
|
case V4L2_CID_MPEG_VIDEO_VP9_LEVEL:
|
|
case V4L2_CID_DETECT_MD_MODE:
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_PROFILE:
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_LEVEL:
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_HIER_CODING_TYPE:
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_REFRESH_TYPE:
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_SIZE_OF_LENGTH_FIELD:
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_TIER:
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_LOOP_FILTER_MODE:
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_DECODE_MODE:
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_START_CODE:
|
|
case V4L2_CID_STATELESS_H264_DECODE_MODE:
|
|
case V4L2_CID_STATELESS_H264_START_CODE:
|
|
case V4L2_CID_CAMERA_ORIENTATION:
|
|
*type = V4L2_CTRL_TYPE_MENU;
|
|
break;
|
|
case V4L2_CID_LINK_FREQ:
|
|
*type = V4L2_CTRL_TYPE_INTEGER_MENU;
|
|
break;
|
|
case V4L2_CID_RDS_TX_PS_NAME:
|
|
case V4L2_CID_RDS_TX_RADIO_TEXT:
|
|
case V4L2_CID_RDS_RX_PS_NAME:
|
|
case V4L2_CID_RDS_RX_RADIO_TEXT:
|
|
*type = V4L2_CTRL_TYPE_STRING;
|
|
break;
|
|
case V4L2_CID_ISO_SENSITIVITY:
|
|
case V4L2_CID_AUTO_EXPOSURE_BIAS:
|
|
case V4L2_CID_MPEG_VIDEO_VPX_NUM_PARTITIONS:
|
|
case V4L2_CID_MPEG_VIDEO_VPX_NUM_REF_FRAMES:
|
|
*type = V4L2_CTRL_TYPE_INTEGER_MENU;
|
|
break;
|
|
case V4L2_CID_USER_CLASS:
|
|
case V4L2_CID_CAMERA_CLASS:
|
|
case V4L2_CID_CODEC_CLASS:
|
|
case V4L2_CID_FM_TX_CLASS:
|
|
case V4L2_CID_FLASH_CLASS:
|
|
case V4L2_CID_JPEG_CLASS:
|
|
case V4L2_CID_IMAGE_SOURCE_CLASS:
|
|
case V4L2_CID_IMAGE_PROC_CLASS:
|
|
case V4L2_CID_DV_CLASS:
|
|
case V4L2_CID_FM_RX_CLASS:
|
|
case V4L2_CID_RF_TUNER_CLASS:
|
|
case V4L2_CID_DETECT_CLASS:
|
|
case V4L2_CID_CODEC_STATELESS_CLASS:
|
|
*type = V4L2_CTRL_TYPE_CTRL_CLASS;
|
|
/* You can neither read not write these */
|
|
*flags |= V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY;
|
|
*min = *max = *step = *def = 0;
|
|
break;
|
|
case V4L2_CID_BG_COLOR:
|
|
*type = V4L2_CTRL_TYPE_INTEGER;
|
|
*step = 1;
|
|
*min = 0;
|
|
/* Max is calculated as RGB888 that is 2^24 */
|
|
*max = 0xFFFFFF;
|
|
break;
|
|
case V4L2_CID_FLASH_FAULT:
|
|
case V4L2_CID_JPEG_ACTIVE_MARKER:
|
|
case V4L2_CID_3A_LOCK:
|
|
case V4L2_CID_AUTO_FOCUS_STATUS:
|
|
case V4L2_CID_DV_TX_HOTPLUG:
|
|
case V4L2_CID_DV_TX_RXSENSE:
|
|
case V4L2_CID_DV_TX_EDID_PRESENT:
|
|
case V4L2_CID_DV_RX_POWER_PRESENT:
|
|
*type = V4L2_CTRL_TYPE_BITMASK;
|
|
break;
|
|
case V4L2_CID_MIN_BUFFERS_FOR_CAPTURE:
|
|
case V4L2_CID_MIN_BUFFERS_FOR_OUTPUT:
|
|
*type = V4L2_CTRL_TYPE_INTEGER;
|
|
*flags |= V4L2_CTRL_FLAG_READ_ONLY;
|
|
break;
|
|
case V4L2_CID_MPEG_VIDEO_DEC_PTS:
|
|
*type = V4L2_CTRL_TYPE_INTEGER64;
|
|
*flags |= V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY;
|
|
*min = *def = 0;
|
|
*max = 0x1ffffffffLL;
|
|
*step = 1;
|
|
break;
|
|
case V4L2_CID_MPEG_VIDEO_DEC_FRAME:
|
|
*type = V4L2_CTRL_TYPE_INTEGER64;
|
|
*flags |= V4L2_CTRL_FLAG_VOLATILE | V4L2_CTRL_FLAG_READ_ONLY;
|
|
*min = *def = 0;
|
|
*max = 0x7fffffffffffffffLL;
|
|
*step = 1;
|
|
break;
|
|
case V4L2_CID_PIXEL_RATE:
|
|
*type = V4L2_CTRL_TYPE_INTEGER64;
|
|
*flags |= V4L2_CTRL_FLAG_READ_ONLY;
|
|
break;
|
|
case V4L2_CID_DETECT_MD_REGION_GRID:
|
|
*type = V4L2_CTRL_TYPE_U8;
|
|
break;
|
|
case V4L2_CID_DETECT_MD_THRESHOLD_GRID:
|
|
*type = V4L2_CTRL_TYPE_U16;
|
|
break;
|
|
case V4L2_CID_RDS_TX_ALT_FREQS:
|
|
*type = V4L2_CTRL_TYPE_U32;
|
|
break;
|
|
case V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS:
|
|
*type = V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS;
|
|
break;
|
|
case V4L2_CID_MPEG_VIDEO_MPEG2_QUANTIZATION:
|
|
*type = V4L2_CTRL_TYPE_MPEG2_QUANTIZATION;
|
|
break;
|
|
case V4L2_CID_STATELESS_FWHT_PARAMS:
|
|
*type = V4L2_CTRL_TYPE_FWHT_PARAMS;
|
|
break;
|
|
case V4L2_CID_STATELESS_H264_SPS:
|
|
*type = V4L2_CTRL_TYPE_H264_SPS;
|
|
break;
|
|
case V4L2_CID_STATELESS_H264_PPS:
|
|
*type = V4L2_CTRL_TYPE_H264_PPS;
|
|
break;
|
|
case V4L2_CID_STATELESS_H264_SCALING_MATRIX:
|
|
*type = V4L2_CTRL_TYPE_H264_SCALING_MATRIX;
|
|
break;
|
|
case V4L2_CID_STATELESS_H264_SLICE_PARAMS:
|
|
*type = V4L2_CTRL_TYPE_H264_SLICE_PARAMS;
|
|
break;
|
|
case V4L2_CID_STATELESS_H264_DECODE_PARAMS:
|
|
*type = V4L2_CTRL_TYPE_H264_DECODE_PARAMS;
|
|
break;
|
|
case V4L2_CID_STATELESS_H264_PRED_WEIGHTS:
|
|
*type = V4L2_CTRL_TYPE_H264_PRED_WEIGHTS;
|
|
break;
|
|
case V4L2_CID_MPEG_VIDEO_VP8_FRAME_HEADER:
|
|
*type = V4L2_CTRL_TYPE_VP8_FRAME_HEADER;
|
|
break;
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_SPS:
|
|
*type = V4L2_CTRL_TYPE_HEVC_SPS;
|
|
break;
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_PPS:
|
|
*type = V4L2_CTRL_TYPE_HEVC_PPS;
|
|
break;
|
|
case V4L2_CID_MPEG_VIDEO_HEVC_SLICE_PARAMS:
|
|
*type = V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS;
|
|
break;
|
|
case V4L2_CID_UNIT_CELL_SIZE:
|
|
*type = V4L2_CTRL_TYPE_AREA;
|
|
*flags |= V4L2_CTRL_FLAG_READ_ONLY;
|
|
break;
|
|
default:
|
|
*type = V4L2_CTRL_TYPE_INTEGER;
|
|
break;
|
|
}
|
|
switch (id) {
|
|
case V4L2_CID_MPEG_AUDIO_ENCODING:
|
|
case V4L2_CID_MPEG_AUDIO_MODE:
|
|
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
|
|
case V4L2_CID_MPEG_VIDEO_B_FRAMES:
|
|
case V4L2_CID_MPEG_STREAM_TYPE:
|
|
*flags |= V4L2_CTRL_FLAG_UPDATE;
|
|
break;
|
|
case V4L2_CID_AUDIO_VOLUME:
|
|
case V4L2_CID_AUDIO_BALANCE:
|
|
case V4L2_CID_AUDIO_BASS:
|
|
case V4L2_CID_AUDIO_TREBLE:
|
|
case V4L2_CID_BRIGHTNESS:
|
|
case V4L2_CID_CONTRAST:
|
|
case V4L2_CID_SATURATION:
|
|
case V4L2_CID_HUE:
|
|
case V4L2_CID_RED_BALANCE:
|
|
case V4L2_CID_BLUE_BALANCE:
|
|
case V4L2_CID_GAMMA:
|
|
case V4L2_CID_SHARPNESS:
|
|
case V4L2_CID_CHROMA_GAIN:
|
|
case V4L2_CID_RDS_TX_DEVIATION:
|
|
case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME:
|
|
case V4L2_CID_AUDIO_LIMITER_DEVIATION:
|
|
case V4L2_CID_AUDIO_COMPRESSION_GAIN:
|
|
case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD:
|
|
case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME:
|
|
case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME:
|
|
case V4L2_CID_PILOT_TONE_DEVIATION:
|
|
case V4L2_CID_PILOT_TONE_FREQUENCY:
|
|
case V4L2_CID_TUNE_POWER_LEVEL:
|
|
case V4L2_CID_TUNE_ANTENNA_CAPACITOR:
|
|
case V4L2_CID_RF_TUNER_RF_GAIN:
|
|
case V4L2_CID_RF_TUNER_LNA_GAIN:
|
|
case V4L2_CID_RF_TUNER_MIXER_GAIN:
|
|
case V4L2_CID_RF_TUNER_IF_GAIN:
|
|
case V4L2_CID_RF_TUNER_BANDWIDTH:
|
|
case V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD:
|
|
*flags |= V4L2_CTRL_FLAG_SLIDER;
|
|
break;
|
|
case V4L2_CID_PAN_RELATIVE:
|
|
case V4L2_CID_TILT_RELATIVE:
|
|
case V4L2_CID_FOCUS_RELATIVE:
|
|
case V4L2_CID_IRIS_RELATIVE:
|
|
case V4L2_CID_ZOOM_RELATIVE:
|
|
*flags |= V4L2_CTRL_FLAG_WRITE_ONLY |
|
|
V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
|
|
break;
|
|
case V4L2_CID_FLASH_STROBE_STATUS:
|
|
case V4L2_CID_AUTO_FOCUS_STATUS:
|
|
case V4L2_CID_FLASH_READY:
|
|
case V4L2_CID_DV_TX_HOTPLUG:
|
|
case V4L2_CID_DV_TX_RXSENSE:
|
|
case V4L2_CID_DV_TX_EDID_PRESENT:
|
|
case V4L2_CID_DV_RX_POWER_PRESENT:
|
|
case V4L2_CID_DV_RX_IT_CONTENT_TYPE:
|
|
case V4L2_CID_RDS_RX_PTY:
|
|
case V4L2_CID_RDS_RX_PS_NAME:
|
|
case V4L2_CID_RDS_RX_RADIO_TEXT:
|
|
case V4L2_CID_RDS_RX_TRAFFIC_ANNOUNCEMENT:
|
|
case V4L2_CID_RDS_RX_TRAFFIC_PROGRAM:
|
|
case V4L2_CID_RDS_RX_MUSIC_SPEECH:
|
|
case V4L2_CID_CAMERA_ORIENTATION:
|
|
case V4L2_CID_CAMERA_SENSOR_ROTATION:
|
|
*flags |= V4L2_CTRL_FLAG_READ_ONLY;
|
|
break;
|
|
case V4L2_CID_RF_TUNER_PLL_LOCK:
|
|
*flags |= V4L2_CTRL_FLAG_VOLATILE;
|
|
break;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_fill);
|
|
|
|
static u32 user_flags(const struct v4l2_ctrl *ctrl)
|
|
{
|
|
u32 flags = ctrl->flags;
|
|
|
|
if (ctrl->is_ptr)
|
|
flags |= V4L2_CTRL_FLAG_HAS_PAYLOAD;
|
|
|
|
return flags;
|
|
}
|
|
|
|
static void fill_event(struct v4l2_event *ev, struct v4l2_ctrl *ctrl, u32 changes)
|
|
{
|
|
memset(ev, 0, sizeof(*ev));
|
|
ev->type = V4L2_EVENT_CTRL;
|
|
ev->id = ctrl->id;
|
|
ev->u.ctrl.changes = changes;
|
|
ev->u.ctrl.type = ctrl->type;
|
|
ev->u.ctrl.flags = user_flags(ctrl);
|
|
if (ctrl->is_ptr)
|
|
ev->u.ctrl.value64 = 0;
|
|
else
|
|
ev->u.ctrl.value64 = *ctrl->p_cur.p_s64;
|
|
ev->u.ctrl.minimum = ctrl->minimum;
|
|
ev->u.ctrl.maximum = ctrl->maximum;
|
|
if (ctrl->type == V4L2_CTRL_TYPE_MENU
|
|
|| ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU)
|
|
ev->u.ctrl.step = 1;
|
|
else
|
|
ev->u.ctrl.step = ctrl->step;
|
|
ev->u.ctrl.default_value = ctrl->default_value;
|
|
}
|
|
|
|
static void send_event(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 changes)
|
|
{
|
|
struct v4l2_event ev;
|
|
struct v4l2_subscribed_event *sev;
|
|
|
|
if (list_empty(&ctrl->ev_subs))
|
|
return;
|
|
fill_event(&ev, ctrl, changes);
|
|
|
|
list_for_each_entry(sev, &ctrl->ev_subs, node)
|
|
if (sev->fh != fh ||
|
|
(sev->flags & V4L2_EVENT_SUB_FL_ALLOW_FEEDBACK))
|
|
v4l2_event_queue_fh(sev->fh, &ev);
|
|
}
|
|
|
|
static bool std_equal(const struct v4l2_ctrl *ctrl, u32 idx,
|
|
union v4l2_ctrl_ptr ptr1,
|
|
union v4l2_ctrl_ptr ptr2)
|
|
{
|
|
switch (ctrl->type) {
|
|
case V4L2_CTRL_TYPE_BUTTON:
|
|
return false;
|
|
case V4L2_CTRL_TYPE_STRING:
|
|
idx *= ctrl->elem_size;
|
|
/* strings are always 0-terminated */
|
|
return !strcmp(ptr1.p_char + idx, ptr2.p_char + idx);
|
|
case V4L2_CTRL_TYPE_INTEGER64:
|
|
return ptr1.p_s64[idx] == ptr2.p_s64[idx];
|
|
case V4L2_CTRL_TYPE_U8:
|
|
return ptr1.p_u8[idx] == ptr2.p_u8[idx];
|
|
case V4L2_CTRL_TYPE_U16:
|
|
return ptr1.p_u16[idx] == ptr2.p_u16[idx];
|
|
case V4L2_CTRL_TYPE_U32:
|
|
return ptr1.p_u32[idx] == ptr2.p_u32[idx];
|
|
default:
|
|
if (ctrl->is_int)
|
|
return ptr1.p_s32[idx] == ptr2.p_s32[idx];
|
|
idx *= ctrl->elem_size;
|
|
return !memcmp(ptr1.p_const + idx, ptr2.p_const + idx,
|
|
ctrl->elem_size);
|
|
}
|
|
}
|
|
|
|
static void std_init_compound(const struct v4l2_ctrl *ctrl, u32 idx,
|
|
union v4l2_ctrl_ptr ptr)
|
|
{
|
|
struct v4l2_ctrl_mpeg2_slice_params *p_mpeg2_slice_params;
|
|
struct v4l2_ctrl_vp8_frame_header *p_vp8_frame_header;
|
|
struct v4l2_ctrl_fwht_params *p_fwht_params;
|
|
void *p = ptr.p + idx * ctrl->elem_size;
|
|
|
|
if (ctrl->p_def.p_const)
|
|
memcpy(p, ctrl->p_def.p_const, ctrl->elem_size);
|
|
else
|
|
memset(p, 0, ctrl->elem_size);
|
|
|
|
/*
|
|
* The cast is needed to get rid of a gcc warning complaining that
|
|
* V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS is not part of the
|
|
* v4l2_ctrl_type enum.
|
|
*/
|
|
switch ((u32)ctrl->type) {
|
|
case V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS:
|
|
p_mpeg2_slice_params = p;
|
|
/* 4:2:0 */
|
|
p_mpeg2_slice_params->sequence.chroma_format = 1;
|
|
/* interlaced top field */
|
|
p_mpeg2_slice_params->picture.picture_structure = 1;
|
|
p_mpeg2_slice_params->picture.picture_coding_type =
|
|
V4L2_MPEG2_PICTURE_CODING_TYPE_I;
|
|
break;
|
|
case V4L2_CTRL_TYPE_VP8_FRAME_HEADER:
|
|
p_vp8_frame_header = p;
|
|
p_vp8_frame_header->num_dct_parts = 1;
|
|
break;
|
|
case V4L2_CTRL_TYPE_FWHT_PARAMS:
|
|
p_fwht_params = p;
|
|
p_fwht_params->version = V4L2_FWHT_VERSION;
|
|
p_fwht_params->width = 1280;
|
|
p_fwht_params->height = 720;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void std_init(const struct v4l2_ctrl *ctrl, u32 idx,
|
|
union v4l2_ctrl_ptr ptr)
|
|
{
|
|
switch (ctrl->type) {
|
|
case V4L2_CTRL_TYPE_STRING:
|
|
idx *= ctrl->elem_size;
|
|
memset(ptr.p_char + idx, ' ', ctrl->minimum);
|
|
ptr.p_char[idx + ctrl->minimum] = '\0';
|
|
break;
|
|
case V4L2_CTRL_TYPE_INTEGER64:
|
|
ptr.p_s64[idx] = ctrl->default_value;
|
|
break;
|
|
case V4L2_CTRL_TYPE_INTEGER:
|
|
case V4L2_CTRL_TYPE_INTEGER_MENU:
|
|
case V4L2_CTRL_TYPE_MENU:
|
|
case V4L2_CTRL_TYPE_BITMASK:
|
|
case V4L2_CTRL_TYPE_BOOLEAN:
|
|
ptr.p_s32[idx] = ctrl->default_value;
|
|
break;
|
|
case V4L2_CTRL_TYPE_BUTTON:
|
|
case V4L2_CTRL_TYPE_CTRL_CLASS:
|
|
ptr.p_s32[idx] = 0;
|
|
break;
|
|
case V4L2_CTRL_TYPE_U8:
|
|
ptr.p_u8[idx] = ctrl->default_value;
|
|
break;
|
|
case V4L2_CTRL_TYPE_U16:
|
|
ptr.p_u16[idx] = ctrl->default_value;
|
|
break;
|
|
case V4L2_CTRL_TYPE_U32:
|
|
ptr.p_u32[idx] = ctrl->default_value;
|
|
break;
|
|
default:
|
|
std_init_compound(ctrl, idx, ptr);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void std_log(const struct v4l2_ctrl *ctrl)
|
|
{
|
|
union v4l2_ctrl_ptr ptr = ctrl->p_cur;
|
|
|
|
if (ctrl->is_array) {
|
|
unsigned i;
|
|
|
|
for (i = 0; i < ctrl->nr_of_dims; i++)
|
|
pr_cont("[%u]", ctrl->dims[i]);
|
|
pr_cont(" ");
|
|
}
|
|
|
|
switch (ctrl->type) {
|
|
case V4L2_CTRL_TYPE_INTEGER:
|
|
pr_cont("%d", *ptr.p_s32);
|
|
break;
|
|
case V4L2_CTRL_TYPE_BOOLEAN:
|
|
pr_cont("%s", *ptr.p_s32 ? "true" : "false");
|
|
break;
|
|
case V4L2_CTRL_TYPE_MENU:
|
|
pr_cont("%s", ctrl->qmenu[*ptr.p_s32]);
|
|
break;
|
|
case V4L2_CTRL_TYPE_INTEGER_MENU:
|
|
pr_cont("%lld", ctrl->qmenu_int[*ptr.p_s32]);
|
|
break;
|
|
case V4L2_CTRL_TYPE_BITMASK:
|
|
pr_cont("0x%08x", *ptr.p_s32);
|
|
break;
|
|
case V4L2_CTRL_TYPE_INTEGER64:
|
|
pr_cont("%lld", *ptr.p_s64);
|
|
break;
|
|
case V4L2_CTRL_TYPE_STRING:
|
|
pr_cont("%s", ptr.p_char);
|
|
break;
|
|
case V4L2_CTRL_TYPE_U8:
|
|
pr_cont("%u", (unsigned)*ptr.p_u8);
|
|
break;
|
|
case V4L2_CTRL_TYPE_U16:
|
|
pr_cont("%u", (unsigned)*ptr.p_u16);
|
|
break;
|
|
case V4L2_CTRL_TYPE_U32:
|
|
pr_cont("%u", (unsigned)*ptr.p_u32);
|
|
break;
|
|
case V4L2_CTRL_TYPE_H264_SPS:
|
|
pr_cont("H264_SPS");
|
|
break;
|
|
case V4L2_CTRL_TYPE_H264_PPS:
|
|
pr_cont("H264_PPS");
|
|
break;
|
|
case V4L2_CTRL_TYPE_H264_SCALING_MATRIX:
|
|
pr_cont("H264_SCALING_MATRIX");
|
|
break;
|
|
case V4L2_CTRL_TYPE_H264_SLICE_PARAMS:
|
|
pr_cont("H264_SLICE_PARAMS");
|
|
break;
|
|
case V4L2_CTRL_TYPE_H264_DECODE_PARAMS:
|
|
pr_cont("H264_DECODE_PARAMS");
|
|
break;
|
|
case V4L2_CTRL_TYPE_H264_PRED_WEIGHTS:
|
|
pr_cont("H264_PRED_WEIGHTS");
|
|
break;
|
|
case V4L2_CTRL_TYPE_FWHT_PARAMS:
|
|
pr_cont("FWHT_PARAMS");
|
|
break;
|
|
default:
|
|
pr_cont("unknown type %d", ctrl->type);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Round towards the closest legal value. Be careful when we are
|
|
* close to the maximum range of the control type to prevent
|
|
* wrap-arounds.
|
|
*/
|
|
#define ROUND_TO_RANGE(val, offset_type, ctrl) \
|
|
({ \
|
|
offset_type offset; \
|
|
if ((ctrl)->maximum >= 0 && \
|
|
val >= (ctrl)->maximum - (s32)((ctrl)->step / 2)) \
|
|
val = (ctrl)->maximum; \
|
|
else \
|
|
val += (s32)((ctrl)->step / 2); \
|
|
val = clamp_t(typeof(val), val, \
|
|
(ctrl)->minimum, (ctrl)->maximum); \
|
|
offset = (val) - (ctrl)->minimum; \
|
|
offset = (ctrl)->step * (offset / (u32)(ctrl)->step); \
|
|
val = (ctrl)->minimum + offset; \
|
|
0; \
|
|
})
|
|
|
|
/* Validate a new control */
|
|
|
|
#define zero_padding(s) \
|
|
memset(&(s).padding, 0, sizeof((s).padding))
|
|
#define zero_reserved(s) \
|
|
memset(&(s).reserved, 0, sizeof((s).reserved))
|
|
|
|
/*
|
|
* Compound controls validation requires setting unused fields/flags to zero
|
|
* in order to properly detect unchanged controls with std_equal's memcmp.
|
|
*/
|
|
static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
|
|
union v4l2_ctrl_ptr ptr)
|
|
{
|
|
struct v4l2_ctrl_mpeg2_slice_params *p_mpeg2_slice_params;
|
|
struct v4l2_ctrl_vp8_frame_header *p_vp8_frame_header;
|
|
struct v4l2_ctrl_fwht_params *p_fwht_params;
|
|
struct v4l2_ctrl_h264_sps *p_h264_sps;
|
|
struct v4l2_ctrl_h264_pps *p_h264_pps;
|
|
struct v4l2_ctrl_h264_pred_weights *p_h264_pred_weights;
|
|
struct v4l2_ctrl_h264_slice_params *p_h264_slice_params;
|
|
struct v4l2_ctrl_h264_decode_params *p_h264_dec_params;
|
|
struct v4l2_ctrl_hevc_sps *p_hevc_sps;
|
|
struct v4l2_ctrl_hevc_pps *p_hevc_pps;
|
|
struct v4l2_ctrl_hevc_slice_params *p_hevc_slice_params;
|
|
struct v4l2_area *area;
|
|
void *p = ptr.p + idx * ctrl->elem_size;
|
|
unsigned int i;
|
|
|
|
switch ((u32)ctrl->type) {
|
|
case V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS:
|
|
p_mpeg2_slice_params = p;
|
|
|
|
switch (p_mpeg2_slice_params->sequence.chroma_format) {
|
|
case 1: /* 4:2:0 */
|
|
case 2: /* 4:2:2 */
|
|
case 3: /* 4:4:4 */
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (p_mpeg2_slice_params->picture.intra_dc_precision) {
|
|
case 0: /* 8 bits */
|
|
case 1: /* 9 bits */
|
|
case 2: /* 10 bits */
|
|
case 3: /* 11 bits */
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (p_mpeg2_slice_params->picture.picture_structure) {
|
|
case 1: /* interlaced top field */
|
|
case 2: /* interlaced bottom field */
|
|
case 3: /* progressive */
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (p_mpeg2_slice_params->picture.picture_coding_type) {
|
|
case V4L2_MPEG2_PICTURE_CODING_TYPE_I:
|
|
case V4L2_MPEG2_PICTURE_CODING_TYPE_P:
|
|
case V4L2_MPEG2_PICTURE_CODING_TYPE_B:
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
break;
|
|
|
|
case V4L2_CTRL_TYPE_MPEG2_QUANTIZATION:
|
|
break;
|
|
|
|
case V4L2_CTRL_TYPE_FWHT_PARAMS:
|
|
p_fwht_params = p;
|
|
if (p_fwht_params->version < V4L2_FWHT_VERSION)
|
|
return -EINVAL;
|
|
if (!p_fwht_params->width || !p_fwht_params->height)
|
|
return -EINVAL;
|
|
break;
|
|
|
|
case V4L2_CTRL_TYPE_H264_SPS:
|
|
p_h264_sps = p;
|
|
|
|
/* Some syntax elements are only conditionally valid */
|
|
if (p_h264_sps->pic_order_cnt_type != 0) {
|
|
p_h264_sps->log2_max_pic_order_cnt_lsb_minus4 = 0;
|
|
} else if (p_h264_sps->pic_order_cnt_type != 1) {
|
|
p_h264_sps->num_ref_frames_in_pic_order_cnt_cycle = 0;
|
|
p_h264_sps->offset_for_non_ref_pic = 0;
|
|
p_h264_sps->offset_for_top_to_bottom_field = 0;
|
|
memset(&p_h264_sps->offset_for_ref_frame, 0,
|
|
sizeof(p_h264_sps->offset_for_ref_frame));
|
|
}
|
|
|
|
if (!V4L2_H264_SPS_HAS_CHROMA_FORMAT(p_h264_sps)) {
|
|
p_h264_sps->chroma_format_idc = 1;
|
|
p_h264_sps->bit_depth_luma_minus8 = 0;
|
|
p_h264_sps->bit_depth_chroma_minus8 = 0;
|
|
|
|
p_h264_sps->flags &=
|
|
~V4L2_H264_SPS_FLAG_QPPRIME_Y_ZERO_TRANSFORM_BYPASS;
|
|
|
|
if (p_h264_sps->chroma_format_idc < 3)
|
|
p_h264_sps->flags &=
|
|
~V4L2_H264_SPS_FLAG_SEPARATE_COLOUR_PLANE;
|
|
}
|
|
|
|
if (p_h264_sps->flags & V4L2_H264_SPS_FLAG_FRAME_MBS_ONLY)
|
|
p_h264_sps->flags &=
|
|
~V4L2_H264_SPS_FLAG_MB_ADAPTIVE_FRAME_FIELD;
|
|
|
|
/*
|
|
* Chroma 4:2:2 format require at least High 4:2:2 profile.
|
|
*
|
|
* The H264 specification and well-known parser implementations
|
|
* use profile-idc values directly, as that is clearer and
|
|
* less ambiguous. We do the same here.
|
|
*/
|
|
if (p_h264_sps->profile_idc < 122 &&
|
|
p_h264_sps->chroma_format_idc > 1)
|
|
return -EINVAL;
|
|
/* Chroma 4:4:4 format require at least High 4:2:2 profile */
|
|
if (p_h264_sps->profile_idc < 244 &&
|
|
p_h264_sps->chroma_format_idc > 2)
|
|
return -EINVAL;
|
|
if (p_h264_sps->chroma_format_idc > 3)
|
|
return -EINVAL;
|
|
|
|
if (p_h264_sps->bit_depth_luma_minus8 > 6)
|
|
return -EINVAL;
|
|
if (p_h264_sps->bit_depth_chroma_minus8 > 6)
|
|
return -EINVAL;
|
|
if (p_h264_sps->log2_max_frame_num_minus4 > 12)
|
|
return -EINVAL;
|
|
if (p_h264_sps->pic_order_cnt_type > 2)
|
|
return -EINVAL;
|
|
if (p_h264_sps->log2_max_pic_order_cnt_lsb_minus4 > 12)
|
|
return -EINVAL;
|
|
if (p_h264_sps->max_num_ref_frames > V4L2_H264_REF_LIST_LEN)
|
|
return -EINVAL;
|
|
break;
|
|
|
|
case V4L2_CTRL_TYPE_H264_PPS:
|
|
p_h264_pps = p;
|
|
|
|
if (p_h264_pps->num_slice_groups_minus1 > 7)
|
|
return -EINVAL;
|
|
if (p_h264_pps->num_ref_idx_l0_default_active_minus1 >
|
|
(V4L2_H264_REF_LIST_LEN - 1))
|
|
return -EINVAL;
|
|
if (p_h264_pps->num_ref_idx_l1_default_active_minus1 >
|
|
(V4L2_H264_REF_LIST_LEN - 1))
|
|
return -EINVAL;
|
|
if (p_h264_pps->weighted_bipred_idc > 2)
|
|
return -EINVAL;
|
|
/*
|
|
* pic_init_qp_minus26 shall be in the range of
|
|
* -(26 + QpBdOffset_y) to +25, inclusive,
|
|
* where QpBdOffset_y is 6 * bit_depth_luma_minus8
|
|
*/
|
|
if (p_h264_pps->pic_init_qp_minus26 < -62 ||
|
|
p_h264_pps->pic_init_qp_minus26 > 25)
|
|
return -EINVAL;
|
|
if (p_h264_pps->pic_init_qs_minus26 < -26 ||
|
|
p_h264_pps->pic_init_qs_minus26 > 25)
|
|
return -EINVAL;
|
|
if (p_h264_pps->chroma_qp_index_offset < -12 ||
|
|
p_h264_pps->chroma_qp_index_offset > 12)
|
|
return -EINVAL;
|
|
if (p_h264_pps->second_chroma_qp_index_offset < -12 ||
|
|
p_h264_pps->second_chroma_qp_index_offset > 12)
|
|
return -EINVAL;
|
|
break;
|
|
|
|
case V4L2_CTRL_TYPE_H264_SCALING_MATRIX:
|
|
break;
|
|
|
|
case V4L2_CTRL_TYPE_H264_PRED_WEIGHTS:
|
|
p_h264_pred_weights = p;
|
|
|
|
if (p_h264_pred_weights->luma_log2_weight_denom > 7)
|
|
return -EINVAL;
|
|
if (p_h264_pred_weights->chroma_log2_weight_denom > 7)
|
|
return -EINVAL;
|
|
break;
|
|
|
|
case V4L2_CTRL_TYPE_H264_SLICE_PARAMS:
|
|
p_h264_slice_params = p;
|
|
|
|
if (p_h264_slice_params->slice_type != V4L2_H264_SLICE_TYPE_B)
|
|
p_h264_slice_params->flags &=
|
|
~V4L2_H264_SLICE_FLAG_DIRECT_SPATIAL_MV_PRED;
|
|
|
|
if (p_h264_slice_params->colour_plane_id > 2)
|
|
return -EINVAL;
|
|
if (p_h264_slice_params->cabac_init_idc > 2)
|
|
return -EINVAL;
|
|
if (p_h264_slice_params->disable_deblocking_filter_idc > 2)
|
|
return -EINVAL;
|
|
if (p_h264_slice_params->slice_alpha_c0_offset_div2 < -6 ||
|
|
p_h264_slice_params->slice_alpha_c0_offset_div2 > 6)
|
|
return -EINVAL;
|
|
if (p_h264_slice_params->slice_beta_offset_div2 < -6 ||
|
|
p_h264_slice_params->slice_beta_offset_div2 > 6)
|
|
return -EINVAL;
|
|
|
|
if (p_h264_slice_params->slice_type == V4L2_H264_SLICE_TYPE_I ||
|
|
p_h264_slice_params->slice_type == V4L2_H264_SLICE_TYPE_SI)
|
|
p_h264_slice_params->num_ref_idx_l0_active_minus1 = 0;
|
|
if (p_h264_slice_params->slice_type != V4L2_H264_SLICE_TYPE_B)
|
|
p_h264_slice_params->num_ref_idx_l1_active_minus1 = 0;
|
|
|
|
if (p_h264_slice_params->num_ref_idx_l0_active_minus1 >
|
|
(V4L2_H264_REF_LIST_LEN - 1))
|
|
return -EINVAL;
|
|
if (p_h264_slice_params->num_ref_idx_l1_active_minus1 >
|
|
(V4L2_H264_REF_LIST_LEN - 1))
|
|
return -EINVAL;
|
|
zero_reserved(*p_h264_slice_params);
|
|
break;
|
|
|
|
case V4L2_CTRL_TYPE_H264_DECODE_PARAMS:
|
|
p_h264_dec_params = p;
|
|
|
|
if (p_h264_dec_params->nal_ref_idc > 3)
|
|
return -EINVAL;
|
|
for (i = 0; i < V4L2_H264_NUM_DPB_ENTRIES; i++) {
|
|
struct v4l2_h264_dpb_entry *dpb_entry =
|
|
&p_h264_dec_params->dpb[i];
|
|
|
|
zero_reserved(*dpb_entry);
|
|
}
|
|
zero_reserved(*p_h264_dec_params);
|
|
break;
|
|
|
|
case V4L2_CTRL_TYPE_VP8_FRAME_HEADER:
|
|
p_vp8_frame_header = p;
|
|
|
|
switch (p_vp8_frame_header->num_dct_parts) {
|
|
case 1:
|
|
case 2:
|
|
case 4:
|
|
case 8:
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
zero_padding(p_vp8_frame_header->segment_header);
|
|
zero_padding(p_vp8_frame_header->lf_header);
|
|
zero_padding(p_vp8_frame_header->quant_header);
|
|
zero_padding(p_vp8_frame_header->entropy_header);
|
|
zero_padding(p_vp8_frame_header->coder_state);
|
|
break;
|
|
|
|
case V4L2_CTRL_TYPE_HEVC_SPS:
|
|
p_hevc_sps = p;
|
|
|
|
if (!(p_hevc_sps->flags & V4L2_HEVC_SPS_FLAG_PCM_ENABLED)) {
|
|
p_hevc_sps->pcm_sample_bit_depth_luma_minus1 = 0;
|
|
p_hevc_sps->pcm_sample_bit_depth_chroma_minus1 = 0;
|
|
p_hevc_sps->log2_min_pcm_luma_coding_block_size_minus3 = 0;
|
|
p_hevc_sps->log2_diff_max_min_pcm_luma_coding_block_size = 0;
|
|
}
|
|
|
|
if (!(p_hevc_sps->flags &
|
|
V4L2_HEVC_SPS_FLAG_LONG_TERM_REF_PICS_PRESENT))
|
|
p_hevc_sps->num_long_term_ref_pics_sps = 0;
|
|
break;
|
|
|
|
case V4L2_CTRL_TYPE_HEVC_PPS:
|
|
p_hevc_pps = p;
|
|
|
|
if (!(p_hevc_pps->flags &
|
|
V4L2_HEVC_PPS_FLAG_CU_QP_DELTA_ENABLED))
|
|
p_hevc_pps->diff_cu_qp_delta_depth = 0;
|
|
|
|
if (!(p_hevc_pps->flags & V4L2_HEVC_PPS_FLAG_TILES_ENABLED)) {
|
|
p_hevc_pps->num_tile_columns_minus1 = 0;
|
|
p_hevc_pps->num_tile_rows_minus1 = 0;
|
|
memset(&p_hevc_pps->column_width_minus1, 0,
|
|
sizeof(p_hevc_pps->column_width_minus1));
|
|
memset(&p_hevc_pps->row_height_minus1, 0,
|
|
sizeof(p_hevc_pps->row_height_minus1));
|
|
|
|
p_hevc_pps->flags &=
|
|
~V4L2_HEVC_PPS_FLAG_LOOP_FILTER_ACROSS_TILES_ENABLED;
|
|
}
|
|
|
|
if (p_hevc_pps->flags &
|
|
V4L2_HEVC_PPS_FLAG_PPS_DISABLE_DEBLOCKING_FILTER) {
|
|
p_hevc_pps->pps_beta_offset_div2 = 0;
|
|
p_hevc_pps->pps_tc_offset_div2 = 0;
|
|
}
|
|
|
|
zero_padding(*p_hevc_pps);
|
|
break;
|
|
|
|
case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS:
|
|
p_hevc_slice_params = p;
|
|
|
|
if (p_hevc_slice_params->num_active_dpb_entries >
|
|
V4L2_HEVC_DPB_ENTRIES_NUM_MAX)
|
|
return -EINVAL;
|
|
|
|
zero_padding(p_hevc_slice_params->pred_weight_table);
|
|
|
|
for (i = 0; i < p_hevc_slice_params->num_active_dpb_entries;
|
|
i++) {
|
|
struct v4l2_hevc_dpb_entry *dpb_entry =
|
|
&p_hevc_slice_params->dpb[i];
|
|
|
|
zero_padding(*dpb_entry);
|
|
}
|
|
|
|
zero_padding(*p_hevc_slice_params);
|
|
break;
|
|
|
|
case V4L2_CTRL_TYPE_AREA:
|
|
area = p;
|
|
if (!area->width || !area->height)
|
|
return -EINVAL;
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int std_validate(const struct v4l2_ctrl *ctrl, u32 idx,
|
|
union v4l2_ctrl_ptr ptr)
|
|
{
|
|
size_t len;
|
|
u64 offset;
|
|
s64 val;
|
|
|
|
switch ((u32)ctrl->type) {
|
|
case V4L2_CTRL_TYPE_INTEGER:
|
|
return ROUND_TO_RANGE(ptr.p_s32[idx], u32, ctrl);
|
|
case V4L2_CTRL_TYPE_INTEGER64:
|
|
/*
|
|
* We can't use the ROUND_TO_RANGE define here due to
|
|
* the u64 divide that needs special care.
|
|
*/
|
|
val = ptr.p_s64[idx];
|
|
if (ctrl->maximum >= 0 && val >= ctrl->maximum - (s64)(ctrl->step / 2))
|
|
val = ctrl->maximum;
|
|
else
|
|
val += (s64)(ctrl->step / 2);
|
|
val = clamp_t(s64, val, ctrl->minimum, ctrl->maximum);
|
|
offset = val - ctrl->minimum;
|
|
do_div(offset, ctrl->step);
|
|
ptr.p_s64[idx] = ctrl->minimum + offset * ctrl->step;
|
|
return 0;
|
|
case V4L2_CTRL_TYPE_U8:
|
|
return ROUND_TO_RANGE(ptr.p_u8[idx], u8, ctrl);
|
|
case V4L2_CTRL_TYPE_U16:
|
|
return ROUND_TO_RANGE(ptr.p_u16[idx], u16, ctrl);
|
|
case V4L2_CTRL_TYPE_U32:
|
|
return ROUND_TO_RANGE(ptr.p_u32[idx], u32, ctrl);
|
|
|
|
case V4L2_CTRL_TYPE_BOOLEAN:
|
|
ptr.p_s32[idx] = !!ptr.p_s32[idx];
|
|
return 0;
|
|
|
|
case V4L2_CTRL_TYPE_MENU:
|
|
case V4L2_CTRL_TYPE_INTEGER_MENU:
|
|
if (ptr.p_s32[idx] < ctrl->minimum || ptr.p_s32[idx] > ctrl->maximum)
|
|
return -ERANGE;
|
|
if (ptr.p_s32[idx] < BITS_PER_LONG_LONG &&
|
|
(ctrl->menu_skip_mask & BIT_ULL(ptr.p_s32[idx])))
|
|
return -EINVAL;
|
|
if (ctrl->type == V4L2_CTRL_TYPE_MENU &&
|
|
ctrl->qmenu[ptr.p_s32[idx]][0] == '\0')
|
|
return -EINVAL;
|
|
return 0;
|
|
|
|
case V4L2_CTRL_TYPE_BITMASK:
|
|
ptr.p_s32[idx] &= ctrl->maximum;
|
|
return 0;
|
|
|
|
case V4L2_CTRL_TYPE_BUTTON:
|
|
case V4L2_CTRL_TYPE_CTRL_CLASS:
|
|
ptr.p_s32[idx] = 0;
|
|
return 0;
|
|
|
|
case V4L2_CTRL_TYPE_STRING:
|
|
idx *= ctrl->elem_size;
|
|
len = strlen(ptr.p_char + idx);
|
|
if (len < ctrl->minimum)
|
|
return -ERANGE;
|
|
if ((len - (u32)ctrl->minimum) % (u32)ctrl->step)
|
|
return -ERANGE;
|
|
return 0;
|
|
|
|
default:
|
|
return std_validate_compound(ctrl, idx, ptr);
|
|
}
|
|
}
|
|
|
|
static const struct v4l2_ctrl_type_ops std_type_ops = {
|
|
.equal = std_equal,
|
|
.init = std_init,
|
|
.log = std_log,
|
|
.validate = std_validate,
|
|
};
|
|
|
|
/* Helper function: copy the given control value back to the caller */
|
|
static int ptr_to_user(struct v4l2_ext_control *c,
|
|
struct v4l2_ctrl *ctrl,
|
|
union v4l2_ctrl_ptr ptr)
|
|
{
|
|
u32 len;
|
|
|
|
if (ctrl->is_ptr && !ctrl->is_string)
|
|
return copy_to_user(c->ptr, ptr.p_const, c->size) ?
|
|
-EFAULT : 0;
|
|
|
|
switch (ctrl->type) {
|
|
case V4L2_CTRL_TYPE_STRING:
|
|
len = strlen(ptr.p_char);
|
|
if (c->size < len + 1) {
|
|
c->size = ctrl->elem_size;
|
|
return -ENOSPC;
|
|
}
|
|
return copy_to_user(c->string, ptr.p_char, len + 1) ?
|
|
-EFAULT : 0;
|
|
case V4L2_CTRL_TYPE_INTEGER64:
|
|
c->value64 = *ptr.p_s64;
|
|
break;
|
|
default:
|
|
c->value = *ptr.p_s32;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Helper function: copy the current control value back to the caller */
|
|
static int cur_to_user(struct v4l2_ext_control *c,
|
|
struct v4l2_ctrl *ctrl)
|
|
{
|
|
return ptr_to_user(c, ctrl, ctrl->p_cur);
|
|
}
|
|
|
|
/* Helper function: copy the new control value back to the caller */
|
|
static int new_to_user(struct v4l2_ext_control *c,
|
|
struct v4l2_ctrl *ctrl)
|
|
{
|
|
return ptr_to_user(c, ctrl, ctrl->p_new);
|
|
}
|
|
|
|
/* Helper function: copy the request value back to the caller */
|
|
static int req_to_user(struct v4l2_ext_control *c,
|
|
struct v4l2_ctrl_ref *ref)
|
|
{
|
|
return ptr_to_user(c, ref->ctrl, ref->p_req);
|
|
}
|
|
|
|
/* Helper function: copy the initial control value back to the caller */
|
|
static int def_to_user(struct v4l2_ext_control *c, struct v4l2_ctrl *ctrl)
|
|
{
|
|
int idx;
|
|
|
|
for (idx = 0; idx < ctrl->elems; idx++)
|
|
ctrl->type_ops->init(ctrl, idx, ctrl->p_new);
|
|
|
|
return ptr_to_user(c, ctrl, ctrl->p_new);
|
|
}
|
|
|
|
/* Helper function: copy the caller-provider value to the given control value */
|
|
static int user_to_ptr(struct v4l2_ext_control *c,
|
|
struct v4l2_ctrl *ctrl,
|
|
union v4l2_ctrl_ptr ptr)
|
|
{
|
|
int ret;
|
|
u32 size;
|
|
|
|
ctrl->is_new = 1;
|
|
if (ctrl->is_ptr && !ctrl->is_string) {
|
|
unsigned idx;
|
|
|
|
ret = copy_from_user(ptr.p, c->ptr, c->size) ? -EFAULT : 0;
|
|
if (ret || !ctrl->is_array)
|
|
return ret;
|
|
for (idx = c->size / ctrl->elem_size; idx < ctrl->elems; idx++)
|
|
ctrl->type_ops->init(ctrl, idx, ptr);
|
|
return 0;
|
|
}
|
|
|
|
switch (ctrl->type) {
|
|
case V4L2_CTRL_TYPE_INTEGER64:
|
|
*ptr.p_s64 = c->value64;
|
|
break;
|
|
case V4L2_CTRL_TYPE_STRING:
|
|
size = c->size;
|
|
if (size == 0)
|
|
return -ERANGE;
|
|
if (size > ctrl->maximum + 1)
|
|
size = ctrl->maximum + 1;
|
|
ret = copy_from_user(ptr.p_char, c->string, size) ? -EFAULT : 0;
|
|
if (!ret) {
|
|
char last = ptr.p_char[size - 1];
|
|
|
|
ptr.p_char[size - 1] = 0;
|
|
/* If the string was longer than ctrl->maximum,
|
|
then return an error. */
|
|
if (strlen(ptr.p_char) == ctrl->maximum && last)
|
|
return -ERANGE;
|
|
}
|
|
return ret;
|
|
default:
|
|
*ptr.p_s32 = c->value;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Helper function: copy the caller-provider value as the new control value */
|
|
static int user_to_new(struct v4l2_ext_control *c,
|
|
struct v4l2_ctrl *ctrl)
|
|
{
|
|
return user_to_ptr(c, ctrl, ctrl->p_new);
|
|
}
|
|
|
|
/* Copy the one value to another. */
|
|
static void ptr_to_ptr(struct v4l2_ctrl *ctrl,
|
|
union v4l2_ctrl_ptr from, union v4l2_ctrl_ptr to)
|
|
{
|
|
if (ctrl == NULL)
|
|
return;
|
|
memcpy(to.p, from.p_const, ctrl->elems * ctrl->elem_size);
|
|
}
|
|
|
|
/* Copy the new value to the current value. */
|
|
static void new_to_cur(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 ch_flags)
|
|
{
|
|
bool changed;
|
|
|
|
if (ctrl == NULL)
|
|
return;
|
|
|
|
/* has_changed is set by cluster_changed */
|
|
changed = ctrl->has_changed;
|
|
if (changed)
|
|
ptr_to_ptr(ctrl, ctrl->p_new, ctrl->p_cur);
|
|
|
|
if (ch_flags & V4L2_EVENT_CTRL_CH_FLAGS) {
|
|
/* Note: CH_FLAGS is only set for auto clusters. */
|
|
ctrl->flags &=
|
|
~(V4L2_CTRL_FLAG_INACTIVE | V4L2_CTRL_FLAG_VOLATILE);
|
|
if (!is_cur_manual(ctrl->cluster[0])) {
|
|
ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
|
|
if (ctrl->cluster[0]->has_volatiles)
|
|
ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
|
|
}
|
|
fh = NULL;
|
|
}
|
|
if (changed || ch_flags) {
|
|
/* If a control was changed that was not one of the controls
|
|
modified by the application, then send the event to all. */
|
|
if (!ctrl->is_new)
|
|
fh = NULL;
|
|
send_event(fh, ctrl,
|
|
(changed ? V4L2_EVENT_CTRL_CH_VALUE : 0) | ch_flags);
|
|
if (ctrl->call_notify && changed && ctrl->handler->notify)
|
|
ctrl->handler->notify(ctrl, ctrl->handler->notify_priv);
|
|
}
|
|
}
|
|
|
|
/* Copy the current value to the new value */
|
|
static void cur_to_new(struct v4l2_ctrl *ctrl)
|
|
{
|
|
if (ctrl == NULL)
|
|
return;
|
|
ptr_to_ptr(ctrl, ctrl->p_cur, ctrl->p_new);
|
|
}
|
|
|
|
/* Copy the new value to the request value */
|
|
static void new_to_req(struct v4l2_ctrl_ref *ref)
|
|
{
|
|
if (!ref)
|
|
return;
|
|
ptr_to_ptr(ref->ctrl, ref->ctrl->p_new, ref->p_req);
|
|
ref->req = ref;
|
|
}
|
|
|
|
/* Copy the request value to the new value */
|
|
static void req_to_new(struct v4l2_ctrl_ref *ref)
|
|
{
|
|
if (!ref)
|
|
return;
|
|
if (ref->req)
|
|
ptr_to_ptr(ref->ctrl, ref->req->p_req, ref->ctrl->p_new);
|
|
else
|
|
ptr_to_ptr(ref->ctrl, ref->ctrl->p_cur, ref->ctrl->p_new);
|
|
}
|
|
|
|
/* Return non-zero if one or more of the controls in the cluster has a new
|
|
value that differs from the current value. */
|
|
static int cluster_changed(struct v4l2_ctrl *master)
|
|
{
|
|
bool changed = false;
|
|
unsigned idx;
|
|
int i;
|
|
|
|
for (i = 0; i < master->ncontrols; i++) {
|
|
struct v4l2_ctrl *ctrl = master->cluster[i];
|
|
bool ctrl_changed = false;
|
|
|
|
if (ctrl == NULL)
|
|
continue;
|
|
|
|
if (ctrl->flags & V4L2_CTRL_FLAG_EXECUTE_ON_WRITE)
|
|
changed = ctrl_changed = true;
|
|
|
|
/*
|
|
* Set has_changed to false to avoid generating
|
|
* the event V4L2_EVENT_CTRL_CH_VALUE
|
|
*/
|
|
if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) {
|
|
ctrl->has_changed = false;
|
|
continue;
|
|
}
|
|
|
|
for (idx = 0; !ctrl_changed && idx < ctrl->elems; idx++)
|
|
ctrl_changed = !ctrl->type_ops->equal(ctrl, idx,
|
|
ctrl->p_cur, ctrl->p_new);
|
|
ctrl->has_changed = ctrl_changed;
|
|
changed |= ctrl->has_changed;
|
|
}
|
|
return changed;
|
|
}
|
|
|
|
/* Control range checking */
|
|
static int check_range(enum v4l2_ctrl_type type,
|
|
s64 min, s64 max, u64 step, s64 def)
|
|
{
|
|
switch (type) {
|
|
case V4L2_CTRL_TYPE_BOOLEAN:
|
|
if (step != 1 || max > 1 || min < 0)
|
|
return -ERANGE;
|
|
fallthrough;
|
|
case V4L2_CTRL_TYPE_U8:
|
|
case V4L2_CTRL_TYPE_U16:
|
|
case V4L2_CTRL_TYPE_U32:
|
|
case V4L2_CTRL_TYPE_INTEGER:
|
|
case V4L2_CTRL_TYPE_INTEGER64:
|
|
if (step == 0 || min > max || def < min || def > max)
|
|
return -ERANGE;
|
|
return 0;
|
|
case V4L2_CTRL_TYPE_BITMASK:
|
|
if (step || min || !max || (def & ~max))
|
|
return -ERANGE;
|
|
return 0;
|
|
case V4L2_CTRL_TYPE_MENU:
|
|
case V4L2_CTRL_TYPE_INTEGER_MENU:
|
|
if (min > max || def < min || def > max)
|
|
return -ERANGE;
|
|
/* Note: step == menu_skip_mask for menu controls.
|
|
So here we check if the default value is masked out. */
|
|
if (step && ((1 << def) & step))
|
|
return -EINVAL;
|
|
return 0;
|
|
case V4L2_CTRL_TYPE_STRING:
|
|
if (min > max || min < 0 || step < 1 || def)
|
|
return -ERANGE;
|
|
return 0;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Validate a new control */
|
|
static int validate_new(const struct v4l2_ctrl *ctrl, union v4l2_ctrl_ptr p_new)
|
|
{
|
|
unsigned idx;
|
|
int err = 0;
|
|
|
|
for (idx = 0; !err && idx < ctrl->elems; idx++)
|
|
err = ctrl->type_ops->validate(ctrl, idx, p_new);
|
|
return err;
|
|
}
|
|
|
|
static inline u32 node2id(struct list_head *node)
|
|
{
|
|
return list_entry(node, struct v4l2_ctrl_ref, node)->ctrl->id;
|
|
}
|
|
|
|
/* Set the handler's error code if it wasn't set earlier already */
|
|
static inline int handler_set_err(struct v4l2_ctrl_handler *hdl, int err)
|
|
{
|
|
if (hdl->error == 0)
|
|
hdl->error = err;
|
|
return err;
|
|
}
|
|
|
|
/* Initialize the handler */
|
|
int v4l2_ctrl_handler_init_class(struct v4l2_ctrl_handler *hdl,
|
|
unsigned nr_of_controls_hint,
|
|
struct lock_class_key *key, const char *name)
|
|
{
|
|
mutex_init(&hdl->_lock);
|
|
hdl->lock = &hdl->_lock;
|
|
lockdep_set_class_and_name(hdl->lock, key, name);
|
|
INIT_LIST_HEAD(&hdl->ctrls);
|
|
INIT_LIST_HEAD(&hdl->ctrl_refs);
|
|
INIT_LIST_HEAD(&hdl->requests);
|
|
INIT_LIST_HEAD(&hdl->requests_queued);
|
|
hdl->request_is_queued = false;
|
|
hdl->nr_of_buckets = 1 + nr_of_controls_hint / 8;
|
|
hdl->buckets = kvmalloc_array(hdl->nr_of_buckets,
|
|
sizeof(hdl->buckets[0]),
|
|
GFP_KERNEL | __GFP_ZERO);
|
|
hdl->error = hdl->buckets ? 0 : -ENOMEM;
|
|
media_request_object_init(&hdl->req_obj);
|
|
return hdl->error;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_handler_init_class);
|
|
|
|
/* Free all controls and control refs */
|
|
void v4l2_ctrl_handler_free(struct v4l2_ctrl_handler *hdl)
|
|
{
|
|
struct v4l2_ctrl_ref *ref, *next_ref;
|
|
struct v4l2_ctrl *ctrl, *next_ctrl;
|
|
struct v4l2_subscribed_event *sev, *next_sev;
|
|
|
|
if (hdl == NULL || hdl->buckets == NULL)
|
|
return;
|
|
|
|
if (!hdl->req_obj.req && !list_empty(&hdl->requests)) {
|
|
struct v4l2_ctrl_handler *req, *next_req;
|
|
|
|
list_for_each_entry_safe(req, next_req, &hdl->requests, requests) {
|
|
media_request_object_unbind(&req->req_obj);
|
|
media_request_object_put(&req->req_obj);
|
|
}
|
|
}
|
|
mutex_lock(hdl->lock);
|
|
/* Free all nodes */
|
|
list_for_each_entry_safe(ref, next_ref, &hdl->ctrl_refs, node) {
|
|
list_del(&ref->node);
|
|
kfree(ref);
|
|
}
|
|
/* Free all controls owned by the handler */
|
|
list_for_each_entry_safe(ctrl, next_ctrl, &hdl->ctrls, node) {
|
|
list_del(&ctrl->node);
|
|
list_for_each_entry_safe(sev, next_sev, &ctrl->ev_subs, node)
|
|
list_del(&sev->node);
|
|
kvfree(ctrl);
|
|
}
|
|
kvfree(hdl->buckets);
|
|
hdl->buckets = NULL;
|
|
hdl->cached = NULL;
|
|
hdl->error = 0;
|
|
mutex_unlock(hdl->lock);
|
|
mutex_destroy(&hdl->_lock);
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_handler_free);
|
|
|
|
/* For backwards compatibility: V4L2_CID_PRIVATE_BASE should no longer
|
|
be used except in G_CTRL, S_CTRL, QUERYCTRL and QUERYMENU when dealing
|
|
with applications that do not use the NEXT_CTRL flag.
|
|
|
|
We just find the n-th private user control. It's O(N), but that should not
|
|
be an issue in this particular case. */
|
|
static struct v4l2_ctrl_ref *find_private_ref(
|
|
struct v4l2_ctrl_handler *hdl, u32 id)
|
|
{
|
|
struct v4l2_ctrl_ref *ref;
|
|
|
|
id -= V4L2_CID_PRIVATE_BASE;
|
|
list_for_each_entry(ref, &hdl->ctrl_refs, node) {
|
|
/* Search for private user controls that are compatible with
|
|
VIDIOC_G/S_CTRL. */
|
|
if (V4L2_CTRL_ID2WHICH(ref->ctrl->id) == V4L2_CTRL_CLASS_USER &&
|
|
V4L2_CTRL_DRIVER_PRIV(ref->ctrl->id)) {
|
|
if (!ref->ctrl->is_int)
|
|
continue;
|
|
if (id == 0)
|
|
return ref;
|
|
id--;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/* Find a control with the given ID. */
|
|
static struct v4l2_ctrl_ref *find_ref(struct v4l2_ctrl_handler *hdl, u32 id)
|
|
{
|
|
struct v4l2_ctrl_ref *ref;
|
|
int bucket;
|
|
|
|
id &= V4L2_CTRL_ID_MASK;
|
|
|
|
/* Old-style private controls need special handling */
|
|
if (id >= V4L2_CID_PRIVATE_BASE)
|
|
return find_private_ref(hdl, id);
|
|
bucket = id % hdl->nr_of_buckets;
|
|
|
|
/* Simple optimization: cache the last control found */
|
|
if (hdl->cached && hdl->cached->ctrl->id == id)
|
|
return hdl->cached;
|
|
|
|
/* Not in cache, search the hash */
|
|
ref = hdl->buckets ? hdl->buckets[bucket] : NULL;
|
|
while (ref && ref->ctrl->id != id)
|
|
ref = ref->next;
|
|
|
|
if (ref)
|
|
hdl->cached = ref; /* cache it! */
|
|
return ref;
|
|
}
|
|
|
|
/* Find a control with the given ID. Take the handler's lock first. */
|
|
static struct v4l2_ctrl_ref *find_ref_lock(
|
|
struct v4l2_ctrl_handler *hdl, u32 id)
|
|
{
|
|
struct v4l2_ctrl_ref *ref = NULL;
|
|
|
|
if (hdl) {
|
|
mutex_lock(hdl->lock);
|
|
ref = find_ref(hdl, id);
|
|
mutex_unlock(hdl->lock);
|
|
}
|
|
return ref;
|
|
}
|
|
|
|
/* Find a control with the given ID. */
|
|
struct v4l2_ctrl *v4l2_ctrl_find(struct v4l2_ctrl_handler *hdl, u32 id)
|
|
{
|
|
struct v4l2_ctrl_ref *ref = find_ref_lock(hdl, id);
|
|
|
|
return ref ? ref->ctrl : NULL;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_find);
|
|
|
|
/* Allocate a new v4l2_ctrl_ref and hook it into the handler. */
|
|
static int handler_new_ref(struct v4l2_ctrl_handler *hdl,
|
|
struct v4l2_ctrl *ctrl,
|
|
struct v4l2_ctrl_ref **ctrl_ref,
|
|
bool from_other_dev, bool allocate_req)
|
|
{
|
|
struct v4l2_ctrl_ref *ref;
|
|
struct v4l2_ctrl_ref *new_ref;
|
|
u32 id = ctrl->id;
|
|
u32 class_ctrl = V4L2_CTRL_ID2WHICH(id) | 1;
|
|
int bucket = id % hdl->nr_of_buckets; /* which bucket to use */
|
|
unsigned int size_extra_req = 0;
|
|
|
|
if (ctrl_ref)
|
|
*ctrl_ref = NULL;
|
|
|
|
/*
|
|
* Automatically add the control class if it is not yet present and
|
|
* the new control is not a compound control.
|
|
*/
|
|
if (ctrl->type < V4L2_CTRL_COMPOUND_TYPES &&
|
|
id != class_ctrl && find_ref_lock(hdl, class_ctrl) == NULL)
|
|
if (!v4l2_ctrl_new_std(hdl, NULL, class_ctrl, 0, 0, 0, 0))
|
|
return hdl->error;
|
|
|
|
if (hdl->error)
|
|
return hdl->error;
|
|
|
|
if (allocate_req)
|
|
size_extra_req = ctrl->elems * ctrl->elem_size;
|
|
new_ref = kzalloc(sizeof(*new_ref) + size_extra_req, GFP_KERNEL);
|
|
if (!new_ref)
|
|
return handler_set_err(hdl, -ENOMEM);
|
|
new_ref->ctrl = ctrl;
|
|
new_ref->from_other_dev = from_other_dev;
|
|
if (size_extra_req)
|
|
new_ref->p_req.p = &new_ref[1];
|
|
|
|
INIT_LIST_HEAD(&new_ref->node);
|
|
|
|
mutex_lock(hdl->lock);
|
|
|
|
/* Add immediately at the end of the list if the list is empty, or if
|
|
the last element in the list has a lower ID.
|
|
This ensures that when elements are added in ascending order the
|
|
insertion is an O(1) operation. */
|
|
if (list_empty(&hdl->ctrl_refs) || id > node2id(hdl->ctrl_refs.prev)) {
|
|
list_add_tail(&new_ref->node, &hdl->ctrl_refs);
|
|
goto insert_in_hash;
|
|
}
|
|
|
|
/* Find insert position in sorted list */
|
|
list_for_each_entry(ref, &hdl->ctrl_refs, node) {
|
|
if (ref->ctrl->id < id)
|
|
continue;
|
|
/* Don't add duplicates */
|
|
if (ref->ctrl->id == id) {
|
|
kfree(new_ref);
|
|
goto unlock;
|
|
}
|
|
list_add(&new_ref->node, ref->node.prev);
|
|
break;
|
|
}
|
|
|
|
insert_in_hash:
|
|
/* Insert the control node in the hash */
|
|
new_ref->next = hdl->buckets[bucket];
|
|
hdl->buckets[bucket] = new_ref;
|
|
if (ctrl_ref)
|
|
*ctrl_ref = new_ref;
|
|
if (ctrl->handler == hdl) {
|
|
/* By default each control starts in a cluster of its own.
|
|
* new_ref->ctrl is basically a cluster array with one
|
|
* element, so that's perfect to use as the cluster pointer.
|
|
* But only do this for the handler that owns the control.
|
|
*/
|
|
ctrl->cluster = &new_ref->ctrl;
|
|
ctrl->ncontrols = 1;
|
|
}
|
|
|
|
unlock:
|
|
mutex_unlock(hdl->lock);
|
|
return 0;
|
|
}
|
|
|
|
/* Add a new control */
|
|
static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,
|
|
const struct v4l2_ctrl_ops *ops,
|
|
const struct v4l2_ctrl_type_ops *type_ops,
|
|
u32 id, const char *name, enum v4l2_ctrl_type type,
|
|
s64 min, s64 max, u64 step, s64 def,
|
|
const u32 dims[V4L2_CTRL_MAX_DIMS], u32 elem_size,
|
|
u32 flags, const char * const *qmenu,
|
|
const s64 *qmenu_int, const union v4l2_ctrl_ptr p_def,
|
|
void *priv)
|
|
{
|
|
struct v4l2_ctrl *ctrl;
|
|
unsigned sz_extra;
|
|
unsigned nr_of_dims = 0;
|
|
unsigned elems = 1;
|
|
bool is_array;
|
|
unsigned tot_ctrl_size;
|
|
unsigned idx;
|
|
void *data;
|
|
int err;
|
|
|
|
if (hdl->error)
|
|
return NULL;
|
|
|
|
while (dims && dims[nr_of_dims]) {
|
|
elems *= dims[nr_of_dims];
|
|
nr_of_dims++;
|
|
if (nr_of_dims == V4L2_CTRL_MAX_DIMS)
|
|
break;
|
|
}
|
|
is_array = nr_of_dims > 0;
|
|
|
|
/* Prefill elem_size for all types handled by std_type_ops */
|
|
switch ((u32)type) {
|
|
case V4L2_CTRL_TYPE_INTEGER64:
|
|
elem_size = sizeof(s64);
|
|
break;
|
|
case V4L2_CTRL_TYPE_STRING:
|
|
elem_size = max + 1;
|
|
break;
|
|
case V4L2_CTRL_TYPE_U8:
|
|
elem_size = sizeof(u8);
|
|
break;
|
|
case V4L2_CTRL_TYPE_U16:
|
|
elem_size = sizeof(u16);
|
|
break;
|
|
case V4L2_CTRL_TYPE_U32:
|
|
elem_size = sizeof(u32);
|
|
break;
|
|
case V4L2_CTRL_TYPE_MPEG2_SLICE_PARAMS:
|
|
elem_size = sizeof(struct v4l2_ctrl_mpeg2_slice_params);
|
|
break;
|
|
case V4L2_CTRL_TYPE_MPEG2_QUANTIZATION:
|
|
elem_size = sizeof(struct v4l2_ctrl_mpeg2_quantization);
|
|
break;
|
|
case V4L2_CTRL_TYPE_FWHT_PARAMS:
|
|
elem_size = sizeof(struct v4l2_ctrl_fwht_params);
|
|
break;
|
|
case V4L2_CTRL_TYPE_H264_SPS:
|
|
elem_size = sizeof(struct v4l2_ctrl_h264_sps);
|
|
break;
|
|
case V4L2_CTRL_TYPE_H264_PPS:
|
|
elem_size = sizeof(struct v4l2_ctrl_h264_pps);
|
|
break;
|
|
case V4L2_CTRL_TYPE_H264_SCALING_MATRIX:
|
|
elem_size = sizeof(struct v4l2_ctrl_h264_scaling_matrix);
|
|
break;
|
|
case V4L2_CTRL_TYPE_H264_SLICE_PARAMS:
|
|
elem_size = sizeof(struct v4l2_ctrl_h264_slice_params);
|
|
break;
|
|
case V4L2_CTRL_TYPE_H264_DECODE_PARAMS:
|
|
elem_size = sizeof(struct v4l2_ctrl_h264_decode_params);
|
|
break;
|
|
case V4L2_CTRL_TYPE_H264_PRED_WEIGHTS:
|
|
elem_size = sizeof(struct v4l2_ctrl_h264_pred_weights);
|
|
break;
|
|
case V4L2_CTRL_TYPE_VP8_FRAME_HEADER:
|
|
elem_size = sizeof(struct v4l2_ctrl_vp8_frame_header);
|
|
break;
|
|
case V4L2_CTRL_TYPE_HEVC_SPS:
|
|
elem_size = sizeof(struct v4l2_ctrl_hevc_sps);
|
|
break;
|
|
case V4L2_CTRL_TYPE_HEVC_PPS:
|
|
elem_size = sizeof(struct v4l2_ctrl_hevc_pps);
|
|
break;
|
|
case V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS:
|
|
elem_size = sizeof(struct v4l2_ctrl_hevc_slice_params);
|
|
break;
|
|
case V4L2_CTRL_TYPE_AREA:
|
|
elem_size = sizeof(struct v4l2_area);
|
|
break;
|
|
default:
|
|
if (type < V4L2_CTRL_COMPOUND_TYPES)
|
|
elem_size = sizeof(s32);
|
|
break;
|
|
}
|
|
tot_ctrl_size = elem_size * elems;
|
|
|
|
/* Sanity checks */
|
|
if (id == 0 || name == NULL || !elem_size ||
|
|
id >= V4L2_CID_PRIVATE_BASE ||
|
|
(type == V4L2_CTRL_TYPE_MENU && qmenu == NULL) ||
|
|
(type == V4L2_CTRL_TYPE_INTEGER_MENU && qmenu_int == NULL)) {
|
|
handler_set_err(hdl, -ERANGE);
|
|
return NULL;
|
|
}
|
|
err = check_range(type, min, max, step, def);
|
|
if (err) {
|
|
handler_set_err(hdl, err);
|
|
return NULL;
|
|
}
|
|
if (is_array &&
|
|
(type == V4L2_CTRL_TYPE_BUTTON ||
|
|
type == V4L2_CTRL_TYPE_CTRL_CLASS)) {
|
|
handler_set_err(hdl, -EINVAL);
|
|
return NULL;
|
|
}
|
|
|
|
sz_extra = 0;
|
|
if (type == V4L2_CTRL_TYPE_BUTTON)
|
|
flags |= V4L2_CTRL_FLAG_WRITE_ONLY |
|
|
V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
|
|
else if (type == V4L2_CTRL_TYPE_CTRL_CLASS)
|
|
flags |= V4L2_CTRL_FLAG_READ_ONLY;
|
|
else if (type == V4L2_CTRL_TYPE_INTEGER64 ||
|
|
type == V4L2_CTRL_TYPE_STRING ||
|
|
type >= V4L2_CTRL_COMPOUND_TYPES ||
|
|
is_array)
|
|
sz_extra += 2 * tot_ctrl_size;
|
|
|
|
if (type >= V4L2_CTRL_COMPOUND_TYPES && p_def.p_const)
|
|
sz_extra += elem_size;
|
|
|
|
ctrl = kvzalloc(sizeof(*ctrl) + sz_extra, GFP_KERNEL);
|
|
if (ctrl == NULL) {
|
|
handler_set_err(hdl, -ENOMEM);
|
|
return NULL;
|
|
}
|
|
|
|
INIT_LIST_HEAD(&ctrl->node);
|
|
INIT_LIST_HEAD(&ctrl->ev_subs);
|
|
ctrl->handler = hdl;
|
|
ctrl->ops = ops;
|
|
ctrl->type_ops = type_ops ? type_ops : &std_type_ops;
|
|
ctrl->id = id;
|
|
ctrl->name = name;
|
|
ctrl->type = type;
|
|
ctrl->flags = flags;
|
|
ctrl->minimum = min;
|
|
ctrl->maximum = max;
|
|
ctrl->step = step;
|
|
ctrl->default_value = def;
|
|
ctrl->is_string = !is_array && type == V4L2_CTRL_TYPE_STRING;
|
|
ctrl->is_ptr = is_array || type >= V4L2_CTRL_COMPOUND_TYPES || ctrl->is_string;
|
|
ctrl->is_int = !ctrl->is_ptr && type != V4L2_CTRL_TYPE_INTEGER64;
|
|
ctrl->is_array = is_array;
|
|
ctrl->elems = elems;
|
|
ctrl->nr_of_dims = nr_of_dims;
|
|
if (nr_of_dims)
|
|
memcpy(ctrl->dims, dims, nr_of_dims * sizeof(dims[0]));
|
|
ctrl->elem_size = elem_size;
|
|
if (type == V4L2_CTRL_TYPE_MENU)
|
|
ctrl->qmenu = qmenu;
|
|
else if (type == V4L2_CTRL_TYPE_INTEGER_MENU)
|
|
ctrl->qmenu_int = qmenu_int;
|
|
ctrl->priv = priv;
|
|
ctrl->cur.val = ctrl->val = def;
|
|
data = &ctrl[1];
|
|
|
|
if (!ctrl->is_int) {
|
|
ctrl->p_new.p = data;
|
|
ctrl->p_cur.p = data + tot_ctrl_size;
|
|
} else {
|
|
ctrl->p_new.p = &ctrl->val;
|
|
ctrl->p_cur.p = &ctrl->cur.val;
|
|
}
|
|
|
|
if (type >= V4L2_CTRL_COMPOUND_TYPES && p_def.p_const) {
|
|
ctrl->p_def.p = ctrl->p_cur.p + tot_ctrl_size;
|
|
memcpy(ctrl->p_def.p, p_def.p_const, elem_size);
|
|
}
|
|
|
|
for (idx = 0; idx < elems; idx++) {
|
|
ctrl->type_ops->init(ctrl, idx, ctrl->p_cur);
|
|
ctrl->type_ops->init(ctrl, idx, ctrl->p_new);
|
|
}
|
|
|
|
if (handler_new_ref(hdl, ctrl, NULL, false, false)) {
|
|
kvfree(ctrl);
|
|
return NULL;
|
|
}
|
|
mutex_lock(hdl->lock);
|
|
list_add_tail(&ctrl->node, &hdl->ctrls);
|
|
mutex_unlock(hdl->lock);
|
|
return ctrl;
|
|
}
|
|
|
|
struct v4l2_ctrl *v4l2_ctrl_new_custom(struct v4l2_ctrl_handler *hdl,
|
|
const struct v4l2_ctrl_config *cfg, void *priv)
|
|
{
|
|
bool is_menu;
|
|
struct v4l2_ctrl *ctrl;
|
|
const char *name = cfg->name;
|
|
const char * const *qmenu = cfg->qmenu;
|
|
const s64 *qmenu_int = cfg->qmenu_int;
|
|
enum v4l2_ctrl_type type = cfg->type;
|
|
u32 flags = cfg->flags;
|
|
s64 min = cfg->min;
|
|
s64 max = cfg->max;
|
|
u64 step = cfg->step;
|
|
s64 def = cfg->def;
|
|
|
|
if (name == NULL)
|
|
v4l2_ctrl_fill(cfg->id, &name, &type, &min, &max, &step,
|
|
&def, &flags);
|
|
|
|
is_menu = (type == V4L2_CTRL_TYPE_MENU ||
|
|
type == V4L2_CTRL_TYPE_INTEGER_MENU);
|
|
if (is_menu)
|
|
WARN_ON(step);
|
|
else
|
|
WARN_ON(cfg->menu_skip_mask);
|
|
if (type == V4L2_CTRL_TYPE_MENU && !qmenu) {
|
|
qmenu = v4l2_ctrl_get_menu(cfg->id);
|
|
} else if (type == V4L2_CTRL_TYPE_INTEGER_MENU && !qmenu_int) {
|
|
handler_set_err(hdl, -EINVAL);
|
|
return NULL;
|
|
}
|
|
|
|
ctrl = v4l2_ctrl_new(hdl, cfg->ops, cfg->type_ops, cfg->id, name,
|
|
type, min, max,
|
|
is_menu ? cfg->menu_skip_mask : step, def,
|
|
cfg->dims, cfg->elem_size,
|
|
flags, qmenu, qmenu_int, cfg->p_def, priv);
|
|
if (ctrl)
|
|
ctrl->is_private = cfg->is_private;
|
|
return ctrl;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_new_custom);
|
|
|
|
/* Helper function for standard non-menu controls */
|
|
struct v4l2_ctrl *v4l2_ctrl_new_std(struct v4l2_ctrl_handler *hdl,
|
|
const struct v4l2_ctrl_ops *ops,
|
|
u32 id, s64 min, s64 max, u64 step, s64 def)
|
|
{
|
|
const char *name;
|
|
enum v4l2_ctrl_type type;
|
|
u32 flags;
|
|
|
|
v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
|
|
if (type == V4L2_CTRL_TYPE_MENU ||
|
|
type == V4L2_CTRL_TYPE_INTEGER_MENU ||
|
|
type >= V4L2_CTRL_COMPOUND_TYPES) {
|
|
handler_set_err(hdl, -EINVAL);
|
|
return NULL;
|
|
}
|
|
return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
|
|
min, max, step, def, NULL, 0,
|
|
flags, NULL, NULL, ptr_null, NULL);
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_new_std);
|
|
|
|
/* Helper function for standard menu controls */
|
|
struct v4l2_ctrl *v4l2_ctrl_new_std_menu(struct v4l2_ctrl_handler *hdl,
|
|
const struct v4l2_ctrl_ops *ops,
|
|
u32 id, u8 _max, u64 mask, u8 _def)
|
|
{
|
|
const char * const *qmenu = NULL;
|
|
const s64 *qmenu_int = NULL;
|
|
unsigned int qmenu_int_len = 0;
|
|
const char *name;
|
|
enum v4l2_ctrl_type type;
|
|
s64 min;
|
|
s64 max = _max;
|
|
s64 def = _def;
|
|
u64 step;
|
|
u32 flags;
|
|
|
|
v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
|
|
|
|
if (type == V4L2_CTRL_TYPE_MENU)
|
|
qmenu = v4l2_ctrl_get_menu(id);
|
|
else if (type == V4L2_CTRL_TYPE_INTEGER_MENU)
|
|
qmenu_int = v4l2_ctrl_get_int_menu(id, &qmenu_int_len);
|
|
|
|
if ((!qmenu && !qmenu_int) || (qmenu_int && max > qmenu_int_len)) {
|
|
handler_set_err(hdl, -EINVAL);
|
|
return NULL;
|
|
}
|
|
return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
|
|
0, max, mask, def, NULL, 0,
|
|
flags, qmenu, qmenu_int, ptr_null, NULL);
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_new_std_menu);
|
|
|
|
/* Helper function for standard menu controls with driver defined menu */
|
|
struct v4l2_ctrl *v4l2_ctrl_new_std_menu_items(struct v4l2_ctrl_handler *hdl,
|
|
const struct v4l2_ctrl_ops *ops, u32 id, u8 _max,
|
|
u64 mask, u8 _def, const char * const *qmenu)
|
|
{
|
|
enum v4l2_ctrl_type type;
|
|
const char *name;
|
|
u32 flags;
|
|
u64 step;
|
|
s64 min;
|
|
s64 max = _max;
|
|
s64 def = _def;
|
|
|
|
/* v4l2_ctrl_new_std_menu_items() should only be called for
|
|
* standard controls without a standard menu.
|
|
*/
|
|
if (v4l2_ctrl_get_menu(id)) {
|
|
handler_set_err(hdl, -EINVAL);
|
|
return NULL;
|
|
}
|
|
|
|
v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
|
|
if (type != V4L2_CTRL_TYPE_MENU || qmenu == NULL) {
|
|
handler_set_err(hdl, -EINVAL);
|
|
return NULL;
|
|
}
|
|
return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
|
|
0, max, mask, def, NULL, 0,
|
|
flags, qmenu, NULL, ptr_null, NULL);
|
|
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_new_std_menu_items);
|
|
|
|
/* Helper function for standard compound controls */
|
|
struct v4l2_ctrl *v4l2_ctrl_new_std_compound(struct v4l2_ctrl_handler *hdl,
|
|
const struct v4l2_ctrl_ops *ops, u32 id,
|
|
const union v4l2_ctrl_ptr p_def)
|
|
{
|
|
const char *name;
|
|
enum v4l2_ctrl_type type;
|
|
u32 flags;
|
|
s64 min, max, step, def;
|
|
|
|
v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
|
|
if (type < V4L2_CTRL_COMPOUND_TYPES) {
|
|
handler_set_err(hdl, -EINVAL);
|
|
return NULL;
|
|
}
|
|
return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
|
|
min, max, step, def, NULL, 0,
|
|
flags, NULL, NULL, p_def, NULL);
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_new_std_compound);
|
|
|
|
/* Helper function for standard integer menu controls */
|
|
struct v4l2_ctrl *v4l2_ctrl_new_int_menu(struct v4l2_ctrl_handler *hdl,
|
|
const struct v4l2_ctrl_ops *ops,
|
|
u32 id, u8 _max, u8 _def, const s64 *qmenu_int)
|
|
{
|
|
const char *name;
|
|
enum v4l2_ctrl_type type;
|
|
s64 min;
|
|
u64 step;
|
|
s64 max = _max;
|
|
s64 def = _def;
|
|
u32 flags;
|
|
|
|
v4l2_ctrl_fill(id, &name, &type, &min, &max, &step, &def, &flags);
|
|
if (type != V4L2_CTRL_TYPE_INTEGER_MENU) {
|
|
handler_set_err(hdl, -EINVAL);
|
|
return NULL;
|
|
}
|
|
return v4l2_ctrl_new(hdl, ops, NULL, id, name, type,
|
|
0, max, 0, def, NULL, 0,
|
|
flags, NULL, qmenu_int, ptr_null, NULL);
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_new_int_menu);
|
|
|
|
/* Add the controls from another handler to our own. */
|
|
int v4l2_ctrl_add_handler(struct v4l2_ctrl_handler *hdl,
|
|
struct v4l2_ctrl_handler *add,
|
|
bool (*filter)(const struct v4l2_ctrl *ctrl),
|
|
bool from_other_dev)
|
|
{
|
|
struct v4l2_ctrl_ref *ref;
|
|
int ret = 0;
|
|
|
|
/* Do nothing if either handler is NULL or if they are the same */
|
|
if (!hdl || !add || hdl == add)
|
|
return 0;
|
|
if (hdl->error)
|
|
return hdl->error;
|
|
mutex_lock(add->lock);
|
|
list_for_each_entry(ref, &add->ctrl_refs, node) {
|
|
struct v4l2_ctrl *ctrl = ref->ctrl;
|
|
|
|
/* Skip handler-private controls. */
|
|
if (ctrl->is_private)
|
|
continue;
|
|
/* And control classes */
|
|
if (ctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS)
|
|
continue;
|
|
/* Filter any unwanted controls */
|
|
if (filter && !filter(ctrl))
|
|
continue;
|
|
ret = handler_new_ref(hdl, ctrl, NULL, from_other_dev, false);
|
|
if (ret)
|
|
break;
|
|
}
|
|
mutex_unlock(add->lock);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_add_handler);
|
|
|
|
bool v4l2_ctrl_radio_filter(const struct v4l2_ctrl *ctrl)
|
|
{
|
|
if (V4L2_CTRL_ID2WHICH(ctrl->id) == V4L2_CTRL_CLASS_FM_TX)
|
|
return true;
|
|
if (V4L2_CTRL_ID2WHICH(ctrl->id) == V4L2_CTRL_CLASS_FM_RX)
|
|
return true;
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_AUDIO_MUTE:
|
|
case V4L2_CID_AUDIO_VOLUME:
|
|
case V4L2_CID_AUDIO_BALANCE:
|
|
case V4L2_CID_AUDIO_BASS:
|
|
case V4L2_CID_AUDIO_TREBLE:
|
|
case V4L2_CID_AUDIO_LOUDNESS:
|
|
return true;
|
|
default:
|
|
break;
|
|
}
|
|
return false;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_radio_filter);
|
|
|
|
/* Cluster controls */
|
|
void v4l2_ctrl_cluster(unsigned ncontrols, struct v4l2_ctrl **controls)
|
|
{
|
|
bool has_volatiles = false;
|
|
int i;
|
|
|
|
/* The first control is the master control and it must not be NULL */
|
|
if (WARN_ON(ncontrols == 0 || controls[0] == NULL))
|
|
return;
|
|
|
|
for (i = 0; i < ncontrols; i++) {
|
|
if (controls[i]) {
|
|
controls[i]->cluster = controls;
|
|
controls[i]->ncontrols = ncontrols;
|
|
if (controls[i]->flags & V4L2_CTRL_FLAG_VOLATILE)
|
|
has_volatiles = true;
|
|
}
|
|
}
|
|
controls[0]->has_volatiles = has_volatiles;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_cluster);
|
|
|
|
void v4l2_ctrl_auto_cluster(unsigned ncontrols, struct v4l2_ctrl **controls,
|
|
u8 manual_val, bool set_volatile)
|
|
{
|
|
struct v4l2_ctrl *master = controls[0];
|
|
u32 flag = 0;
|
|
int i;
|
|
|
|
v4l2_ctrl_cluster(ncontrols, controls);
|
|
WARN_ON(ncontrols <= 1);
|
|
WARN_ON(manual_val < master->minimum || manual_val > master->maximum);
|
|
WARN_ON(set_volatile && !has_op(master, g_volatile_ctrl));
|
|
master->is_auto = true;
|
|
master->has_volatiles = set_volatile;
|
|
master->manual_mode_value = manual_val;
|
|
master->flags |= V4L2_CTRL_FLAG_UPDATE;
|
|
|
|
if (!is_cur_manual(master))
|
|
flag = V4L2_CTRL_FLAG_INACTIVE |
|
|
(set_volatile ? V4L2_CTRL_FLAG_VOLATILE : 0);
|
|
|
|
for (i = 1; i < ncontrols; i++)
|
|
if (controls[i])
|
|
controls[i]->flags |= flag;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_auto_cluster);
|
|
|
|
/* Activate/deactivate a control. */
|
|
void v4l2_ctrl_activate(struct v4l2_ctrl *ctrl, bool active)
|
|
{
|
|
/* invert since the actual flag is called 'inactive' */
|
|
bool inactive = !active;
|
|
bool old;
|
|
|
|
if (ctrl == NULL)
|
|
return;
|
|
|
|
if (inactive)
|
|
/* set V4L2_CTRL_FLAG_INACTIVE */
|
|
old = test_and_set_bit(4, &ctrl->flags);
|
|
else
|
|
/* clear V4L2_CTRL_FLAG_INACTIVE */
|
|
old = test_and_clear_bit(4, &ctrl->flags);
|
|
if (old != inactive)
|
|
send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_FLAGS);
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_activate);
|
|
|
|
void __v4l2_ctrl_grab(struct v4l2_ctrl *ctrl, bool grabbed)
|
|
{
|
|
bool old;
|
|
|
|
if (ctrl == NULL)
|
|
return;
|
|
|
|
lockdep_assert_held(ctrl->handler->lock);
|
|
|
|
if (grabbed)
|
|
/* set V4L2_CTRL_FLAG_GRABBED */
|
|
old = test_and_set_bit(1, &ctrl->flags);
|
|
else
|
|
/* clear V4L2_CTRL_FLAG_GRABBED */
|
|
old = test_and_clear_bit(1, &ctrl->flags);
|
|
if (old != grabbed)
|
|
send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_FLAGS);
|
|
}
|
|
EXPORT_SYMBOL(__v4l2_ctrl_grab);
|
|
|
|
/* Log the control name and value */
|
|
static void log_ctrl(const struct v4l2_ctrl *ctrl,
|
|
const char *prefix, const char *colon)
|
|
{
|
|
if (ctrl->flags & (V4L2_CTRL_FLAG_DISABLED | V4L2_CTRL_FLAG_WRITE_ONLY))
|
|
return;
|
|
if (ctrl->type == V4L2_CTRL_TYPE_CTRL_CLASS)
|
|
return;
|
|
|
|
pr_info("%s%s%s: ", prefix, colon, ctrl->name);
|
|
|
|
ctrl->type_ops->log(ctrl);
|
|
|
|
if (ctrl->flags & (V4L2_CTRL_FLAG_INACTIVE |
|
|
V4L2_CTRL_FLAG_GRABBED |
|
|
V4L2_CTRL_FLAG_VOLATILE)) {
|
|
if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE)
|
|
pr_cont(" inactive");
|
|
if (ctrl->flags & V4L2_CTRL_FLAG_GRABBED)
|
|
pr_cont(" grabbed");
|
|
if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE)
|
|
pr_cont(" volatile");
|
|
}
|
|
pr_cont("\n");
|
|
}
|
|
|
|
/* Log all controls owned by the handler */
|
|
void v4l2_ctrl_handler_log_status(struct v4l2_ctrl_handler *hdl,
|
|
const char *prefix)
|
|
{
|
|
struct v4l2_ctrl *ctrl;
|
|
const char *colon = "";
|
|
int len;
|
|
|
|
if (hdl == NULL)
|
|
return;
|
|
if (prefix == NULL)
|
|
prefix = "";
|
|
len = strlen(prefix);
|
|
if (len && prefix[len - 1] != ' ')
|
|
colon = ": ";
|
|
mutex_lock(hdl->lock);
|
|
list_for_each_entry(ctrl, &hdl->ctrls, node)
|
|
if (!(ctrl->flags & V4L2_CTRL_FLAG_DISABLED))
|
|
log_ctrl(ctrl, prefix, colon);
|
|
mutex_unlock(hdl->lock);
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_handler_log_status);
|
|
|
|
int v4l2_ctrl_subdev_log_status(struct v4l2_subdev *sd)
|
|
{
|
|
v4l2_ctrl_handler_log_status(sd->ctrl_handler, sd->name);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_subdev_log_status);
|
|
|
|
/* Call s_ctrl for all controls owned by the handler */
|
|
int __v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl)
|
|
{
|
|
struct v4l2_ctrl *ctrl;
|
|
int ret = 0;
|
|
|
|
if (hdl == NULL)
|
|
return 0;
|
|
|
|
lockdep_assert_held(hdl->lock);
|
|
|
|
list_for_each_entry(ctrl, &hdl->ctrls, node)
|
|
ctrl->done = false;
|
|
|
|
list_for_each_entry(ctrl, &hdl->ctrls, node) {
|
|
struct v4l2_ctrl *master = ctrl->cluster[0];
|
|
int i;
|
|
|
|
/* Skip if this control was already handled by a cluster. */
|
|
/* Skip button controls and read-only controls. */
|
|
if (ctrl->done || ctrl->type == V4L2_CTRL_TYPE_BUTTON ||
|
|
(ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY))
|
|
continue;
|
|
|
|
for (i = 0; i < master->ncontrols; i++) {
|
|
if (master->cluster[i]) {
|
|
cur_to_new(master->cluster[i]);
|
|
master->cluster[i]->is_new = 1;
|
|
master->cluster[i]->done = true;
|
|
}
|
|
}
|
|
ret = call_op(master, s_ctrl);
|
|
if (ret)
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(__v4l2_ctrl_handler_setup);
|
|
|
|
int v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl)
|
|
{
|
|
int ret;
|
|
|
|
if (hdl == NULL)
|
|
return 0;
|
|
|
|
mutex_lock(hdl->lock);
|
|
ret = __v4l2_ctrl_handler_setup(hdl);
|
|
mutex_unlock(hdl->lock);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_handler_setup);
|
|
|
|
/* Implement VIDIOC_QUERY_EXT_CTRL */
|
|
int v4l2_query_ext_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_query_ext_ctrl *qc)
|
|
{
|
|
const unsigned next_flags = V4L2_CTRL_FLAG_NEXT_CTRL | V4L2_CTRL_FLAG_NEXT_COMPOUND;
|
|
u32 id = qc->id & V4L2_CTRL_ID_MASK;
|
|
struct v4l2_ctrl_ref *ref;
|
|
struct v4l2_ctrl *ctrl;
|
|
|
|
if (hdl == NULL)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(hdl->lock);
|
|
|
|
/* Try to find it */
|
|
ref = find_ref(hdl, id);
|
|
|
|
if ((qc->id & next_flags) && !list_empty(&hdl->ctrl_refs)) {
|
|
bool is_compound;
|
|
/* Match any control that is not hidden */
|
|
unsigned mask = 1;
|
|
bool match = false;
|
|
|
|
if ((qc->id & next_flags) == V4L2_CTRL_FLAG_NEXT_COMPOUND) {
|
|
/* Match any hidden control */
|
|
match = true;
|
|
} else if ((qc->id & next_flags) == next_flags) {
|
|
/* Match any control, compound or not */
|
|
mask = 0;
|
|
}
|
|
|
|
/* Find the next control with ID > qc->id */
|
|
|
|
/* Did we reach the end of the control list? */
|
|
if (id >= node2id(hdl->ctrl_refs.prev)) {
|
|
ref = NULL; /* Yes, so there is no next control */
|
|
} else if (ref) {
|
|
/* We found a control with the given ID, so just get
|
|
the next valid one in the list. */
|
|
list_for_each_entry_continue(ref, &hdl->ctrl_refs, node) {
|
|
is_compound = ref->ctrl->is_array ||
|
|
ref->ctrl->type >= V4L2_CTRL_COMPOUND_TYPES;
|
|
if (id < ref->ctrl->id &&
|
|
(is_compound & mask) == match)
|
|
break;
|
|
}
|
|
if (&ref->node == &hdl->ctrl_refs)
|
|
ref = NULL;
|
|
} else {
|
|
/* No control with the given ID exists, so start
|
|
searching for the next largest ID. We know there
|
|
is one, otherwise the first 'if' above would have
|
|
been true. */
|
|
list_for_each_entry(ref, &hdl->ctrl_refs, node) {
|
|
is_compound = ref->ctrl->is_array ||
|
|
ref->ctrl->type >= V4L2_CTRL_COMPOUND_TYPES;
|
|
if (id < ref->ctrl->id &&
|
|
(is_compound & mask) == match)
|
|
break;
|
|
}
|
|
if (&ref->node == &hdl->ctrl_refs)
|
|
ref = NULL;
|
|
}
|
|
}
|
|
mutex_unlock(hdl->lock);
|
|
|
|
if (!ref)
|
|
return -EINVAL;
|
|
|
|
ctrl = ref->ctrl;
|
|
memset(qc, 0, sizeof(*qc));
|
|
if (id >= V4L2_CID_PRIVATE_BASE)
|
|
qc->id = id;
|
|
else
|
|
qc->id = ctrl->id;
|
|
strscpy(qc->name, ctrl->name, sizeof(qc->name));
|
|
qc->flags = user_flags(ctrl);
|
|
qc->type = ctrl->type;
|
|
qc->elem_size = ctrl->elem_size;
|
|
qc->elems = ctrl->elems;
|
|
qc->nr_of_dims = ctrl->nr_of_dims;
|
|
memcpy(qc->dims, ctrl->dims, qc->nr_of_dims * sizeof(qc->dims[0]));
|
|
qc->minimum = ctrl->minimum;
|
|
qc->maximum = ctrl->maximum;
|
|
qc->default_value = ctrl->default_value;
|
|
if (ctrl->type == V4L2_CTRL_TYPE_MENU
|
|
|| ctrl->type == V4L2_CTRL_TYPE_INTEGER_MENU)
|
|
qc->step = 1;
|
|
else
|
|
qc->step = ctrl->step;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_query_ext_ctrl);
|
|
|
|
/* Implement VIDIOC_QUERYCTRL */
|
|
int v4l2_queryctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_queryctrl *qc)
|
|
{
|
|
struct v4l2_query_ext_ctrl qec = { qc->id };
|
|
int rc;
|
|
|
|
rc = v4l2_query_ext_ctrl(hdl, &qec);
|
|
if (rc)
|
|
return rc;
|
|
|
|
qc->id = qec.id;
|
|
qc->type = qec.type;
|
|
qc->flags = qec.flags;
|
|
strscpy(qc->name, qec.name, sizeof(qc->name));
|
|
switch (qc->type) {
|
|
case V4L2_CTRL_TYPE_INTEGER:
|
|
case V4L2_CTRL_TYPE_BOOLEAN:
|
|
case V4L2_CTRL_TYPE_MENU:
|
|
case V4L2_CTRL_TYPE_INTEGER_MENU:
|
|
case V4L2_CTRL_TYPE_STRING:
|
|
case V4L2_CTRL_TYPE_BITMASK:
|
|
qc->minimum = qec.minimum;
|
|
qc->maximum = qec.maximum;
|
|
qc->step = qec.step;
|
|
qc->default_value = qec.default_value;
|
|
break;
|
|
default:
|
|
qc->minimum = 0;
|
|
qc->maximum = 0;
|
|
qc->step = 0;
|
|
qc->default_value = 0;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_queryctrl);
|
|
|
|
/* Implement VIDIOC_QUERYMENU */
|
|
int v4l2_querymenu(struct v4l2_ctrl_handler *hdl, struct v4l2_querymenu *qm)
|
|
{
|
|
struct v4l2_ctrl *ctrl;
|
|
u32 i = qm->index;
|
|
|
|
ctrl = v4l2_ctrl_find(hdl, qm->id);
|
|
if (!ctrl)
|
|
return -EINVAL;
|
|
|
|
qm->reserved = 0;
|
|
/* Sanity checks */
|
|
switch (ctrl->type) {
|
|
case V4L2_CTRL_TYPE_MENU:
|
|
if (ctrl->qmenu == NULL)
|
|
return -EINVAL;
|
|
break;
|
|
case V4L2_CTRL_TYPE_INTEGER_MENU:
|
|
if (ctrl->qmenu_int == NULL)
|
|
return -EINVAL;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (i < ctrl->minimum || i > ctrl->maximum)
|
|
return -EINVAL;
|
|
|
|
/* Use mask to see if this menu item should be skipped */
|
|
if (ctrl->menu_skip_mask & (1ULL << i))
|
|
return -EINVAL;
|
|
/* Empty menu items should also be skipped */
|
|
if (ctrl->type == V4L2_CTRL_TYPE_MENU) {
|
|
if (ctrl->qmenu[i] == NULL || ctrl->qmenu[i][0] == '\0')
|
|
return -EINVAL;
|
|
strscpy(qm->name, ctrl->qmenu[i], sizeof(qm->name));
|
|
} else {
|
|
qm->value = ctrl->qmenu_int[i];
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_querymenu);
|
|
|
|
static int v4l2_ctrl_request_clone(struct v4l2_ctrl_handler *hdl,
|
|
const struct v4l2_ctrl_handler *from)
|
|
{
|
|
struct v4l2_ctrl_ref *ref;
|
|
int err = 0;
|
|
|
|
if (WARN_ON(!hdl || hdl == from))
|
|
return -EINVAL;
|
|
|
|
if (hdl->error)
|
|
return hdl->error;
|
|
|
|
WARN_ON(hdl->lock != &hdl->_lock);
|
|
|
|
mutex_lock(from->lock);
|
|
list_for_each_entry(ref, &from->ctrl_refs, node) {
|
|
struct v4l2_ctrl *ctrl = ref->ctrl;
|
|
struct v4l2_ctrl_ref *new_ref;
|
|
|
|
/* Skip refs inherited from other devices */
|
|
if (ref->from_other_dev)
|
|
continue;
|
|
err = handler_new_ref(hdl, ctrl, &new_ref, false, true);
|
|
if (err)
|
|
break;
|
|
}
|
|
mutex_unlock(from->lock);
|
|
return err;
|
|
}
|
|
|
|
static void v4l2_ctrl_request_queue(struct media_request_object *obj)
|
|
{
|
|
struct v4l2_ctrl_handler *hdl =
|
|
container_of(obj, struct v4l2_ctrl_handler, req_obj);
|
|
struct v4l2_ctrl_handler *main_hdl = obj->priv;
|
|
struct v4l2_ctrl_handler *prev_hdl = NULL;
|
|
struct v4l2_ctrl_ref *ref_ctrl, *ref_ctrl_prev = NULL;
|
|
|
|
mutex_lock(main_hdl->lock);
|
|
if (list_empty(&main_hdl->requests_queued))
|
|
goto queue;
|
|
|
|
prev_hdl = list_last_entry(&main_hdl->requests_queued,
|
|
struct v4l2_ctrl_handler, requests_queued);
|
|
/*
|
|
* Note: prev_hdl and hdl must contain the same list of control
|
|
* references, so if any differences are detected then that is a
|
|
* driver bug and the WARN_ON is triggered.
|
|
*/
|
|
mutex_lock(prev_hdl->lock);
|
|
ref_ctrl_prev = list_first_entry(&prev_hdl->ctrl_refs,
|
|
struct v4l2_ctrl_ref, node);
|
|
list_for_each_entry(ref_ctrl, &hdl->ctrl_refs, node) {
|
|
if (ref_ctrl->req)
|
|
continue;
|
|
while (ref_ctrl_prev->ctrl->id < ref_ctrl->ctrl->id) {
|
|
/* Should never happen, but just in case... */
|
|
if (list_is_last(&ref_ctrl_prev->node,
|
|
&prev_hdl->ctrl_refs))
|
|
break;
|
|
ref_ctrl_prev = list_next_entry(ref_ctrl_prev, node);
|
|
}
|
|
if (WARN_ON(ref_ctrl_prev->ctrl->id != ref_ctrl->ctrl->id))
|
|
break;
|
|
ref_ctrl->req = ref_ctrl_prev->req;
|
|
}
|
|
mutex_unlock(prev_hdl->lock);
|
|
queue:
|
|
list_add_tail(&hdl->requests_queued, &main_hdl->requests_queued);
|
|
hdl->request_is_queued = true;
|
|
mutex_unlock(main_hdl->lock);
|
|
}
|
|
|
|
static void v4l2_ctrl_request_unbind(struct media_request_object *obj)
|
|
{
|
|
struct v4l2_ctrl_handler *hdl =
|
|
container_of(obj, struct v4l2_ctrl_handler, req_obj);
|
|
struct v4l2_ctrl_handler *main_hdl = obj->priv;
|
|
|
|
list_del_init(&hdl->requests);
|
|
mutex_lock(main_hdl->lock);
|
|
if (hdl->request_is_queued) {
|
|
list_del_init(&hdl->requests_queued);
|
|
hdl->request_is_queued = false;
|
|
}
|
|
mutex_unlock(main_hdl->lock);
|
|
}
|
|
|
|
static void v4l2_ctrl_request_release(struct media_request_object *obj)
|
|
{
|
|
struct v4l2_ctrl_handler *hdl =
|
|
container_of(obj, struct v4l2_ctrl_handler, req_obj);
|
|
|
|
v4l2_ctrl_handler_free(hdl);
|
|
kfree(hdl);
|
|
}
|
|
|
|
static const struct media_request_object_ops req_ops = {
|
|
.queue = v4l2_ctrl_request_queue,
|
|
.unbind = v4l2_ctrl_request_unbind,
|
|
.release = v4l2_ctrl_request_release,
|
|
};
|
|
|
|
struct v4l2_ctrl_handler *v4l2_ctrl_request_hdl_find(struct media_request *req,
|
|
struct v4l2_ctrl_handler *parent)
|
|
{
|
|
struct media_request_object *obj;
|
|
|
|
if (WARN_ON(req->state != MEDIA_REQUEST_STATE_VALIDATING &&
|
|
req->state != MEDIA_REQUEST_STATE_QUEUED))
|
|
return NULL;
|
|
|
|
obj = media_request_object_find(req, &req_ops, parent);
|
|
if (obj)
|
|
return container_of(obj, struct v4l2_ctrl_handler, req_obj);
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(v4l2_ctrl_request_hdl_find);
|
|
|
|
struct v4l2_ctrl *
|
|
v4l2_ctrl_request_hdl_ctrl_find(struct v4l2_ctrl_handler *hdl, u32 id)
|
|
{
|
|
struct v4l2_ctrl_ref *ref = find_ref_lock(hdl, id);
|
|
|
|
return (ref && ref->req == ref) ? ref->ctrl : NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(v4l2_ctrl_request_hdl_ctrl_find);
|
|
|
|
static int v4l2_ctrl_request_bind(struct media_request *req,
|
|
struct v4l2_ctrl_handler *hdl,
|
|
struct v4l2_ctrl_handler *from)
|
|
{
|
|
int ret;
|
|
|
|
ret = v4l2_ctrl_request_clone(hdl, from);
|
|
|
|
if (!ret) {
|
|
ret = media_request_object_bind(req, &req_ops,
|
|
from, false, &hdl->req_obj);
|
|
if (!ret)
|
|
list_add_tail(&hdl->requests, &from->requests);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* Some general notes on the atomic requirements of VIDIOC_G/TRY/S_EXT_CTRLS:
|
|
|
|
It is not a fully atomic operation, just best-effort only. After all, if
|
|
multiple controls have to be set through multiple i2c writes (for example)
|
|
then some initial writes may succeed while others fail. Thus leaving the
|
|
system in an inconsistent state. The question is how much effort you are
|
|
willing to spend on trying to make something atomic that really isn't.
|
|
|
|
From the point of view of an application the main requirement is that
|
|
when you call VIDIOC_S_EXT_CTRLS and some values are invalid then an
|
|
error should be returned without actually affecting any controls.
|
|
|
|
If all the values are correct, then it is acceptable to just give up
|
|
in case of low-level errors.
|
|
|
|
It is important though that the application can tell when only a partial
|
|
configuration was done. The way we do that is through the error_idx field
|
|
of struct v4l2_ext_controls: if that is equal to the count field then no
|
|
controls were affected. Otherwise all controls before that index were
|
|
successful in performing their 'get' or 'set' operation, the control at
|
|
the given index failed, and you don't know what happened with the controls
|
|
after the failed one. Since if they were part of a control cluster they
|
|
could have been successfully processed (if a cluster member was encountered
|
|
at index < error_idx), they could have failed (if a cluster member was at
|
|
error_idx), or they may not have been processed yet (if the first cluster
|
|
member appeared after error_idx).
|
|
|
|
It is all fairly theoretical, though. In practice all you can do is to
|
|
bail out. If error_idx == count, then it is an application bug. If
|
|
error_idx < count then it is only an application bug if the error code was
|
|
EBUSY. That usually means that something started streaming just when you
|
|
tried to set the controls. In all other cases it is a driver/hardware
|
|
problem and all you can do is to retry or bail out.
|
|
|
|
Note that these rules do not apply to VIDIOC_TRY_EXT_CTRLS: since that
|
|
never modifies controls the error_idx is just set to whatever control
|
|
has an invalid value.
|
|
*/
|
|
|
|
/* Prepare for the extended g/s/try functions.
|
|
Find the controls in the control array and do some basic checks. */
|
|
static int prepare_ext_ctrls(struct v4l2_ctrl_handler *hdl,
|
|
struct v4l2_ext_controls *cs,
|
|
struct v4l2_ctrl_helper *helpers,
|
|
struct video_device *vdev,
|
|
bool get)
|
|
{
|
|
struct v4l2_ctrl_helper *h;
|
|
bool have_clusters = false;
|
|
u32 i;
|
|
|
|
for (i = 0, h = helpers; i < cs->count; i++, h++) {
|
|
struct v4l2_ext_control *c = &cs->controls[i];
|
|
struct v4l2_ctrl_ref *ref;
|
|
struct v4l2_ctrl *ctrl;
|
|
u32 id = c->id & V4L2_CTRL_ID_MASK;
|
|
|
|
cs->error_idx = i;
|
|
|
|
if (cs->which &&
|
|
cs->which != V4L2_CTRL_WHICH_DEF_VAL &&
|
|
cs->which != V4L2_CTRL_WHICH_REQUEST_VAL &&
|
|
V4L2_CTRL_ID2WHICH(id) != cs->which) {
|
|
dprintk(vdev,
|
|
"invalid which 0x%x or control id 0x%x\n",
|
|
cs->which, id);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Old-style private controls are not allowed for
|
|
extended controls */
|
|
if (id >= V4L2_CID_PRIVATE_BASE) {
|
|
dprintk(vdev,
|
|
"old-style private controls not allowed\n");
|
|
return -EINVAL;
|
|
}
|
|
ref = find_ref_lock(hdl, id);
|
|
if (ref == NULL) {
|
|
dprintk(vdev, "cannot find control id 0x%x\n", id);
|
|
return -EINVAL;
|
|
}
|
|
h->ref = ref;
|
|
ctrl = ref->ctrl;
|
|
if (ctrl->flags & V4L2_CTRL_FLAG_DISABLED) {
|
|
dprintk(vdev, "control id 0x%x is disabled\n", id);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (ctrl->cluster[0]->ncontrols > 1)
|
|
have_clusters = true;
|
|
if (ctrl->cluster[0] != ctrl)
|
|
ref = find_ref_lock(hdl, ctrl->cluster[0]->id);
|
|
if (ctrl->is_ptr && !ctrl->is_string) {
|
|
unsigned tot_size = ctrl->elems * ctrl->elem_size;
|
|
|
|
if (c->size < tot_size) {
|
|
/*
|
|
* In the get case the application first
|
|
* queries to obtain the size of the control.
|
|
*/
|
|
if (get) {
|
|
c->size = tot_size;
|
|
return -ENOSPC;
|
|
}
|
|
dprintk(vdev,
|
|
"pointer control id 0x%x size too small, %d bytes but %d bytes needed\n",
|
|
id, c->size, tot_size);
|
|
return -EFAULT;
|
|
}
|
|
c->size = tot_size;
|
|
}
|
|
/* Store the ref to the master control of the cluster */
|
|
h->mref = ref;
|
|
/* Initially set next to 0, meaning that there is no other
|
|
control in this helper array belonging to the same
|
|
cluster */
|
|
h->next = 0;
|
|
}
|
|
|
|
/* We are done if there were no controls that belong to a multi-
|
|
control cluster. */
|
|
if (!have_clusters)
|
|
return 0;
|
|
|
|
/* The code below figures out in O(n) time which controls in the list
|
|
belong to the same cluster. */
|
|
|
|
/* This has to be done with the handler lock taken. */
|
|
mutex_lock(hdl->lock);
|
|
|
|
/* First zero the helper field in the master control references */
|
|
for (i = 0; i < cs->count; i++)
|
|
helpers[i].mref->helper = NULL;
|
|
for (i = 0, h = helpers; i < cs->count; i++, h++) {
|
|
struct v4l2_ctrl_ref *mref = h->mref;
|
|
|
|
/* If the mref->helper is set, then it points to an earlier
|
|
helper that belongs to the same cluster. */
|
|
if (mref->helper) {
|
|
/* Set the next field of mref->helper to the current
|
|
index: this means that that earlier helper now
|
|
points to the next helper in the same cluster. */
|
|
mref->helper->next = i;
|
|
/* mref should be set only for the first helper in the
|
|
cluster, clear the others. */
|
|
h->mref = NULL;
|
|
}
|
|
/* Point the mref helper to the current helper struct. */
|
|
mref->helper = h;
|
|
}
|
|
mutex_unlock(hdl->lock);
|
|
return 0;
|
|
}
|
|
|
|
/* Handles the corner case where cs->count == 0. It checks whether the
|
|
specified control class exists. If that class ID is 0, then it checks
|
|
whether there are any controls at all. */
|
|
static int class_check(struct v4l2_ctrl_handler *hdl, u32 which)
|
|
{
|
|
if (which == 0 || which == V4L2_CTRL_WHICH_DEF_VAL ||
|
|
which == V4L2_CTRL_WHICH_REQUEST_VAL)
|
|
return 0;
|
|
return find_ref_lock(hdl, which | 1) ? 0 : -EINVAL;
|
|
}
|
|
|
|
/* Get extended controls. Allocates the helpers array if needed. */
|
|
static int v4l2_g_ext_ctrls_common(struct v4l2_ctrl_handler *hdl,
|
|
struct v4l2_ext_controls *cs,
|
|
struct video_device *vdev)
|
|
{
|
|
struct v4l2_ctrl_helper helper[4];
|
|
struct v4l2_ctrl_helper *helpers = helper;
|
|
int ret;
|
|
int i, j;
|
|
bool def_value;
|
|
|
|
def_value = (cs->which == V4L2_CTRL_WHICH_DEF_VAL);
|
|
|
|
cs->error_idx = cs->count;
|
|
cs->which = V4L2_CTRL_ID2WHICH(cs->which);
|
|
|
|
if (hdl == NULL)
|
|
return -EINVAL;
|
|
|
|
if (cs->count == 0)
|
|
return class_check(hdl, cs->which);
|
|
|
|
if (cs->count > ARRAY_SIZE(helper)) {
|
|
helpers = kvmalloc_array(cs->count, sizeof(helper[0]),
|
|
GFP_KERNEL);
|
|
if (helpers == NULL)
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ret = prepare_ext_ctrls(hdl, cs, helpers, vdev, true);
|
|
cs->error_idx = cs->count;
|
|
|
|
for (i = 0; !ret && i < cs->count; i++)
|
|
if (helpers[i].ref->ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY)
|
|
ret = -EACCES;
|
|
|
|
for (i = 0; !ret && i < cs->count; i++) {
|
|
int (*ctrl_to_user)(struct v4l2_ext_control *c,
|
|
struct v4l2_ctrl *ctrl);
|
|
struct v4l2_ctrl *master;
|
|
|
|
ctrl_to_user = def_value ? def_to_user : cur_to_user;
|
|
|
|
if (helpers[i].mref == NULL)
|
|
continue;
|
|
|
|
master = helpers[i].mref->ctrl;
|
|
cs->error_idx = i;
|
|
|
|
v4l2_ctrl_lock(master);
|
|
|
|
/* g_volatile_ctrl will update the new control values */
|
|
if (!def_value &&
|
|
((master->flags & V4L2_CTRL_FLAG_VOLATILE) ||
|
|
(master->has_volatiles && !is_cur_manual(master)))) {
|
|
for (j = 0; j < master->ncontrols; j++)
|
|
cur_to_new(master->cluster[j]);
|
|
ret = call_op(master, g_volatile_ctrl);
|
|
ctrl_to_user = new_to_user;
|
|
}
|
|
/* If OK, then copy the current (for non-volatile controls)
|
|
or the new (for volatile controls) control values to the
|
|
caller */
|
|
if (!ret) {
|
|
u32 idx = i;
|
|
|
|
do {
|
|
if (helpers[idx].ref->req)
|
|
ret = req_to_user(cs->controls + idx,
|
|
helpers[idx].ref->req);
|
|
else
|
|
ret = ctrl_to_user(cs->controls + idx,
|
|
helpers[idx].ref->ctrl);
|
|
idx = helpers[idx].next;
|
|
} while (!ret && idx);
|
|
}
|
|
v4l2_ctrl_unlock(master);
|
|
}
|
|
|
|
if (cs->count > ARRAY_SIZE(helper))
|
|
kvfree(helpers);
|
|
return ret;
|
|
}
|
|
|
|
static struct media_request_object *
|
|
v4l2_ctrls_find_req_obj(struct v4l2_ctrl_handler *hdl,
|
|
struct media_request *req, bool set)
|
|
{
|
|
struct media_request_object *obj;
|
|
struct v4l2_ctrl_handler *new_hdl;
|
|
int ret;
|
|
|
|
if (IS_ERR(req))
|
|
return ERR_CAST(req);
|
|
|
|
if (set && WARN_ON(req->state != MEDIA_REQUEST_STATE_UPDATING))
|
|
return ERR_PTR(-EBUSY);
|
|
|
|
obj = media_request_object_find(req, &req_ops, hdl);
|
|
if (obj)
|
|
return obj;
|
|
if (!set)
|
|
return ERR_PTR(-ENOENT);
|
|
|
|
new_hdl = kzalloc(sizeof(*new_hdl), GFP_KERNEL);
|
|
if (!new_hdl)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
obj = &new_hdl->req_obj;
|
|
ret = v4l2_ctrl_handler_init(new_hdl, (hdl->nr_of_buckets - 1) * 8);
|
|
if (!ret)
|
|
ret = v4l2_ctrl_request_bind(req, new_hdl, hdl);
|
|
if (ret) {
|
|
kfree(new_hdl);
|
|
|
|
return ERR_PTR(ret);
|
|
}
|
|
|
|
media_request_object_get(obj);
|
|
return obj;
|
|
}
|
|
|
|
int v4l2_g_ext_ctrls(struct v4l2_ctrl_handler *hdl, struct video_device *vdev,
|
|
struct media_device *mdev, struct v4l2_ext_controls *cs)
|
|
{
|
|
struct media_request_object *obj = NULL;
|
|
struct media_request *req = NULL;
|
|
int ret;
|
|
|
|
if (cs->which == V4L2_CTRL_WHICH_REQUEST_VAL) {
|
|
if (!mdev || cs->request_fd < 0)
|
|
return -EINVAL;
|
|
|
|
req = media_request_get_by_fd(mdev, cs->request_fd);
|
|
if (IS_ERR(req))
|
|
return PTR_ERR(req);
|
|
|
|
if (req->state != MEDIA_REQUEST_STATE_COMPLETE) {
|
|
media_request_put(req);
|
|
return -EACCES;
|
|
}
|
|
|
|
ret = media_request_lock_for_access(req);
|
|
if (ret) {
|
|
media_request_put(req);
|
|
return ret;
|
|
}
|
|
|
|
obj = v4l2_ctrls_find_req_obj(hdl, req, false);
|
|
if (IS_ERR(obj)) {
|
|
media_request_unlock_for_access(req);
|
|
media_request_put(req);
|
|
return PTR_ERR(obj);
|
|
}
|
|
|
|
hdl = container_of(obj, struct v4l2_ctrl_handler,
|
|
req_obj);
|
|
}
|
|
|
|
ret = v4l2_g_ext_ctrls_common(hdl, cs, vdev);
|
|
|
|
if (obj) {
|
|
media_request_unlock_for_access(req);
|
|
media_request_object_put(obj);
|
|
media_request_put(req);
|
|
}
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_g_ext_ctrls);
|
|
|
|
/* Helper function to get a single control */
|
|
static int get_ctrl(struct v4l2_ctrl *ctrl, struct v4l2_ext_control *c)
|
|
{
|
|
struct v4l2_ctrl *master = ctrl->cluster[0];
|
|
int ret = 0;
|
|
int i;
|
|
|
|
/* Compound controls are not supported. The new_to_user() and
|
|
* cur_to_user() calls below would need to be modified not to access
|
|
* userspace memory when called from get_ctrl().
|
|
*/
|
|
if (!ctrl->is_int && ctrl->type != V4L2_CTRL_TYPE_INTEGER64)
|
|
return -EINVAL;
|
|
|
|
if (ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY)
|
|
return -EACCES;
|
|
|
|
v4l2_ctrl_lock(master);
|
|
/* g_volatile_ctrl will update the current control values */
|
|
if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) {
|
|
for (i = 0; i < master->ncontrols; i++)
|
|
cur_to_new(master->cluster[i]);
|
|
ret = call_op(master, g_volatile_ctrl);
|
|
new_to_user(c, ctrl);
|
|
} else {
|
|
cur_to_user(c, ctrl);
|
|
}
|
|
v4l2_ctrl_unlock(master);
|
|
return ret;
|
|
}
|
|
|
|
int v4l2_g_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_control *control)
|
|
{
|
|
struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, control->id);
|
|
struct v4l2_ext_control c;
|
|
int ret;
|
|
|
|
if (ctrl == NULL || !ctrl->is_int)
|
|
return -EINVAL;
|
|
ret = get_ctrl(ctrl, &c);
|
|
control->value = c.value;
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_g_ctrl);
|
|
|
|
s32 v4l2_ctrl_g_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct v4l2_ext_control c;
|
|
|
|
/* It's a driver bug if this happens. */
|
|
if (WARN_ON(!ctrl->is_int))
|
|
return 0;
|
|
c.value = 0;
|
|
get_ctrl(ctrl, &c);
|
|
return c.value;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_g_ctrl);
|
|
|
|
s64 v4l2_ctrl_g_ctrl_int64(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct v4l2_ext_control c;
|
|
|
|
/* It's a driver bug if this happens. */
|
|
if (WARN_ON(ctrl->is_ptr || ctrl->type != V4L2_CTRL_TYPE_INTEGER64))
|
|
return 0;
|
|
c.value64 = 0;
|
|
get_ctrl(ctrl, &c);
|
|
return c.value64;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_g_ctrl_int64);
|
|
|
|
|
|
/* Core function that calls try/s_ctrl and ensures that the new value is
|
|
copied to the current value on a set.
|
|
Must be called with ctrl->handler->lock held. */
|
|
static int try_or_set_cluster(struct v4l2_fh *fh, struct v4l2_ctrl *master,
|
|
bool set, u32 ch_flags)
|
|
{
|
|
bool update_flag;
|
|
int ret;
|
|
int i;
|
|
|
|
/* Go through the cluster and either validate the new value or
|
|
(if no new value was set), copy the current value to the new
|
|
value, ensuring a consistent view for the control ops when
|
|
called. */
|
|
for (i = 0; i < master->ncontrols; i++) {
|
|
struct v4l2_ctrl *ctrl = master->cluster[i];
|
|
|
|
if (ctrl == NULL)
|
|
continue;
|
|
|
|
if (!ctrl->is_new) {
|
|
cur_to_new(ctrl);
|
|
continue;
|
|
}
|
|
/* Check again: it may have changed since the
|
|
previous check in try_or_set_ext_ctrls(). */
|
|
if (set && (ctrl->flags & V4L2_CTRL_FLAG_GRABBED))
|
|
return -EBUSY;
|
|
}
|
|
|
|
ret = call_op(master, try_ctrl);
|
|
|
|
/* Don't set if there is no change */
|
|
if (ret || !set || !cluster_changed(master))
|
|
return ret;
|
|
ret = call_op(master, s_ctrl);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* If OK, then make the new values permanent. */
|
|
update_flag = is_cur_manual(master) != is_new_manual(master);
|
|
|
|
for (i = 0; i < master->ncontrols; i++) {
|
|
/*
|
|
* If we switch from auto to manual mode, and this cluster
|
|
* contains volatile controls, then all non-master controls
|
|
* have to be marked as changed. The 'new' value contains
|
|
* the volatile value (obtained by update_from_auto_cluster),
|
|
* which now has to become the current value.
|
|
*/
|
|
if (i && update_flag && is_new_manual(master) &&
|
|
master->has_volatiles && master->cluster[i])
|
|
master->cluster[i]->has_changed = true;
|
|
|
|
new_to_cur(fh, master->cluster[i], ch_flags |
|
|
((update_flag && i > 0) ? V4L2_EVENT_CTRL_CH_FLAGS : 0));
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Validate controls. */
|
|
static int validate_ctrls(struct v4l2_ext_controls *cs,
|
|
struct v4l2_ctrl_helper *helpers,
|
|
struct video_device *vdev,
|
|
bool set)
|
|
{
|
|
unsigned i;
|
|
int ret = 0;
|
|
|
|
cs->error_idx = cs->count;
|
|
for (i = 0; i < cs->count; i++) {
|
|
struct v4l2_ctrl *ctrl = helpers[i].ref->ctrl;
|
|
union v4l2_ctrl_ptr p_new;
|
|
|
|
cs->error_idx = i;
|
|
|
|
if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY) {
|
|
dprintk(vdev,
|
|
"control id 0x%x is read-only\n",
|
|
ctrl->id);
|
|
return -EACCES;
|
|
}
|
|
/* This test is also done in try_set_control_cluster() which
|
|
is called in atomic context, so that has the final say,
|
|
but it makes sense to do an up-front check as well. Once
|
|
an error occurs in try_set_control_cluster() some other
|
|
controls may have been set already and we want to do a
|
|
best-effort to avoid that. */
|
|
if (set && (ctrl->flags & V4L2_CTRL_FLAG_GRABBED)) {
|
|
dprintk(vdev,
|
|
"control id 0x%x is grabbed, cannot set\n",
|
|
ctrl->id);
|
|
return -EBUSY;
|
|
}
|
|
/*
|
|
* Skip validation for now if the payload needs to be copied
|
|
* from userspace into kernelspace. We'll validate those later.
|
|
*/
|
|
if (ctrl->is_ptr)
|
|
continue;
|
|
if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64)
|
|
p_new.p_s64 = &cs->controls[i].value64;
|
|
else
|
|
p_new.p_s32 = &cs->controls[i].value;
|
|
ret = validate_new(ctrl, p_new);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Obtain the current volatile values of an autocluster and mark them
|
|
as new. */
|
|
static void update_from_auto_cluster(struct v4l2_ctrl *master)
|
|
{
|
|
int i;
|
|
|
|
for (i = 1; i < master->ncontrols; i++)
|
|
cur_to_new(master->cluster[i]);
|
|
if (!call_op(master, g_volatile_ctrl))
|
|
for (i = 1; i < master->ncontrols; i++)
|
|
if (master->cluster[i])
|
|
master->cluster[i]->is_new = 1;
|
|
}
|
|
|
|
/* Try or try-and-set controls */
|
|
static int try_set_ext_ctrls_common(struct v4l2_fh *fh,
|
|
struct v4l2_ctrl_handler *hdl,
|
|
struct v4l2_ext_controls *cs,
|
|
struct video_device *vdev, bool set)
|
|
{
|
|
struct v4l2_ctrl_helper helper[4];
|
|
struct v4l2_ctrl_helper *helpers = helper;
|
|
unsigned i, j;
|
|
int ret;
|
|
|
|
cs->error_idx = cs->count;
|
|
|
|
/* Default value cannot be changed */
|
|
if (cs->which == V4L2_CTRL_WHICH_DEF_VAL) {
|
|
dprintk(vdev, "%s: cannot change default value\n",
|
|
video_device_node_name(vdev));
|
|
return -EINVAL;
|
|
}
|
|
|
|
cs->which = V4L2_CTRL_ID2WHICH(cs->which);
|
|
|
|
if (hdl == NULL) {
|
|
dprintk(vdev, "%s: invalid null control handler\n",
|
|
video_device_node_name(vdev));
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (cs->count == 0)
|
|
return class_check(hdl, cs->which);
|
|
|
|
if (cs->count > ARRAY_SIZE(helper)) {
|
|
helpers = kvmalloc_array(cs->count, sizeof(helper[0]),
|
|
GFP_KERNEL);
|
|
if (!helpers)
|
|
return -ENOMEM;
|
|
}
|
|
ret = prepare_ext_ctrls(hdl, cs, helpers, vdev, false);
|
|
if (!ret)
|
|
ret = validate_ctrls(cs, helpers, vdev, set);
|
|
if (ret && set)
|
|
cs->error_idx = cs->count;
|
|
for (i = 0; !ret && i < cs->count; i++) {
|
|
struct v4l2_ctrl *master;
|
|
u32 idx = i;
|
|
|
|
if (helpers[i].mref == NULL)
|
|
continue;
|
|
|
|
cs->error_idx = i;
|
|
master = helpers[i].mref->ctrl;
|
|
v4l2_ctrl_lock(master);
|
|
|
|
/* Reset the 'is_new' flags of the cluster */
|
|
for (j = 0; j < master->ncontrols; j++)
|
|
if (master->cluster[j])
|
|
master->cluster[j]->is_new = 0;
|
|
|
|
/* For volatile autoclusters that are currently in auto mode
|
|
we need to discover if it will be set to manual mode.
|
|
If so, then we have to copy the current volatile values
|
|
first since those will become the new manual values (which
|
|
may be overwritten by explicit new values from this set
|
|
of controls). */
|
|
if (master->is_auto && master->has_volatiles &&
|
|
!is_cur_manual(master)) {
|
|
/* Pick an initial non-manual value */
|
|
s32 new_auto_val = master->manual_mode_value + 1;
|
|
u32 tmp_idx = idx;
|
|
|
|
do {
|
|
/* Check if the auto control is part of the
|
|
list, and remember the new value. */
|
|
if (helpers[tmp_idx].ref->ctrl == master)
|
|
new_auto_val = cs->controls[tmp_idx].value;
|
|
tmp_idx = helpers[tmp_idx].next;
|
|
} while (tmp_idx);
|
|
/* If the new value == the manual value, then copy
|
|
the current volatile values. */
|
|
if (new_auto_val == master->manual_mode_value)
|
|
update_from_auto_cluster(master);
|
|
}
|
|
|
|
/* Copy the new caller-supplied control values.
|
|
user_to_new() sets 'is_new' to 1. */
|
|
do {
|
|
struct v4l2_ctrl *ctrl = helpers[idx].ref->ctrl;
|
|
|
|
ret = user_to_new(cs->controls + idx, ctrl);
|
|
if (!ret && ctrl->is_ptr) {
|
|
ret = validate_new(ctrl, ctrl->p_new);
|
|
if (ret)
|
|
dprintk(vdev,
|
|
"failed to validate control %s (%d)\n",
|
|
v4l2_ctrl_get_name(ctrl->id), ret);
|
|
}
|
|
idx = helpers[idx].next;
|
|
} while (!ret && idx);
|
|
|
|
if (!ret)
|
|
ret = try_or_set_cluster(fh, master,
|
|
!hdl->req_obj.req && set, 0);
|
|
if (!ret && hdl->req_obj.req && set) {
|
|
for (j = 0; j < master->ncontrols; j++) {
|
|
struct v4l2_ctrl_ref *ref =
|
|
find_ref(hdl, master->cluster[j]->id);
|
|
|
|
new_to_req(ref);
|
|
}
|
|
}
|
|
|
|
/* Copy the new values back to userspace. */
|
|
if (!ret) {
|
|
idx = i;
|
|
do {
|
|
ret = new_to_user(cs->controls + idx,
|
|
helpers[idx].ref->ctrl);
|
|
idx = helpers[idx].next;
|
|
} while (!ret && idx);
|
|
}
|
|
v4l2_ctrl_unlock(master);
|
|
}
|
|
|
|
if (cs->count > ARRAY_SIZE(helper))
|
|
kvfree(helpers);
|
|
return ret;
|
|
}
|
|
|
|
static int try_set_ext_ctrls(struct v4l2_fh *fh,
|
|
struct v4l2_ctrl_handler *hdl,
|
|
struct video_device *vdev,
|
|
struct media_device *mdev,
|
|
struct v4l2_ext_controls *cs, bool set)
|
|
{
|
|
struct media_request_object *obj = NULL;
|
|
struct media_request *req = NULL;
|
|
int ret;
|
|
|
|
if (cs->which == V4L2_CTRL_WHICH_REQUEST_VAL) {
|
|
if (!mdev) {
|
|
dprintk(vdev, "%s: missing media device\n",
|
|
video_device_node_name(vdev));
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (cs->request_fd < 0) {
|
|
dprintk(vdev, "%s: invalid request fd %d\n",
|
|
video_device_node_name(vdev), cs->request_fd);
|
|
return -EINVAL;
|
|
}
|
|
|
|
req = media_request_get_by_fd(mdev, cs->request_fd);
|
|
if (IS_ERR(req)) {
|
|
dprintk(vdev, "%s: cannot find request fd %d\n",
|
|
video_device_node_name(vdev), cs->request_fd);
|
|
return PTR_ERR(req);
|
|
}
|
|
|
|
ret = media_request_lock_for_update(req);
|
|
if (ret) {
|
|
dprintk(vdev, "%s: cannot lock request fd %d\n",
|
|
video_device_node_name(vdev), cs->request_fd);
|
|
media_request_put(req);
|
|
return ret;
|
|
}
|
|
|
|
obj = v4l2_ctrls_find_req_obj(hdl, req, set);
|
|
if (IS_ERR(obj)) {
|
|
dprintk(vdev,
|
|
"%s: cannot find request object for request fd %d\n",
|
|
video_device_node_name(vdev),
|
|
cs->request_fd);
|
|
media_request_unlock_for_update(req);
|
|
media_request_put(req);
|
|
return PTR_ERR(obj);
|
|
}
|
|
hdl = container_of(obj, struct v4l2_ctrl_handler,
|
|
req_obj);
|
|
}
|
|
|
|
ret = try_set_ext_ctrls_common(fh, hdl, cs, vdev, set);
|
|
if (ret)
|
|
dprintk(vdev,
|
|
"%s: try_set_ext_ctrls_common failed (%d)\n",
|
|
video_device_node_name(vdev), ret);
|
|
|
|
if (obj) {
|
|
media_request_unlock_for_update(req);
|
|
media_request_object_put(obj);
|
|
media_request_put(req);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int v4l2_try_ext_ctrls(struct v4l2_ctrl_handler *hdl,
|
|
struct video_device *vdev,
|
|
struct media_device *mdev,
|
|
struct v4l2_ext_controls *cs)
|
|
{
|
|
return try_set_ext_ctrls(NULL, hdl, vdev, mdev, cs, false);
|
|
}
|
|
EXPORT_SYMBOL(v4l2_try_ext_ctrls);
|
|
|
|
int v4l2_s_ext_ctrls(struct v4l2_fh *fh,
|
|
struct v4l2_ctrl_handler *hdl,
|
|
struct video_device *vdev,
|
|
struct media_device *mdev,
|
|
struct v4l2_ext_controls *cs)
|
|
{
|
|
return try_set_ext_ctrls(fh, hdl, vdev, mdev, cs, true);
|
|
}
|
|
EXPORT_SYMBOL(v4l2_s_ext_ctrls);
|
|
|
|
/* Helper function for VIDIOC_S_CTRL compatibility */
|
|
static int set_ctrl(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl, u32 ch_flags)
|
|
{
|
|
struct v4l2_ctrl *master = ctrl->cluster[0];
|
|
int ret;
|
|
int i;
|
|
|
|
/* Reset the 'is_new' flags of the cluster */
|
|
for (i = 0; i < master->ncontrols; i++)
|
|
if (master->cluster[i])
|
|
master->cluster[i]->is_new = 0;
|
|
|
|
ret = validate_new(ctrl, ctrl->p_new);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* For autoclusters with volatiles that are switched from auto to
|
|
manual mode we have to update the current volatile values since
|
|
those will become the initial manual values after such a switch. */
|
|
if (master->is_auto && master->has_volatiles && ctrl == master &&
|
|
!is_cur_manual(master) && ctrl->val == master->manual_mode_value)
|
|
update_from_auto_cluster(master);
|
|
|
|
ctrl->is_new = 1;
|
|
return try_or_set_cluster(fh, master, true, ch_flags);
|
|
}
|
|
|
|
/* Helper function for VIDIOC_S_CTRL compatibility */
|
|
static int set_ctrl_lock(struct v4l2_fh *fh, struct v4l2_ctrl *ctrl,
|
|
struct v4l2_ext_control *c)
|
|
{
|
|
int ret;
|
|
|
|
v4l2_ctrl_lock(ctrl);
|
|
user_to_new(c, ctrl);
|
|
ret = set_ctrl(fh, ctrl, 0);
|
|
if (!ret)
|
|
cur_to_user(c, ctrl);
|
|
v4l2_ctrl_unlock(ctrl);
|
|
return ret;
|
|
}
|
|
|
|
int v4l2_s_ctrl(struct v4l2_fh *fh, struct v4l2_ctrl_handler *hdl,
|
|
struct v4l2_control *control)
|
|
{
|
|
struct v4l2_ctrl *ctrl = v4l2_ctrl_find(hdl, control->id);
|
|
struct v4l2_ext_control c = { control->id };
|
|
int ret;
|
|
|
|
if (ctrl == NULL || !ctrl->is_int)
|
|
return -EINVAL;
|
|
|
|
if (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY)
|
|
return -EACCES;
|
|
|
|
c.value = control->value;
|
|
ret = set_ctrl_lock(fh, ctrl, &c);
|
|
control->value = c.value;
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_s_ctrl);
|
|
|
|
int __v4l2_ctrl_s_ctrl(struct v4l2_ctrl *ctrl, s32 val)
|
|
{
|
|
lockdep_assert_held(ctrl->handler->lock);
|
|
|
|
/* It's a driver bug if this happens. */
|
|
if (WARN_ON(!ctrl->is_int))
|
|
return -EINVAL;
|
|
ctrl->val = val;
|
|
return set_ctrl(NULL, ctrl, 0);
|
|
}
|
|
EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl);
|
|
|
|
int __v4l2_ctrl_s_ctrl_int64(struct v4l2_ctrl *ctrl, s64 val)
|
|
{
|
|
lockdep_assert_held(ctrl->handler->lock);
|
|
|
|
/* It's a driver bug if this happens. */
|
|
if (WARN_ON(ctrl->is_ptr || ctrl->type != V4L2_CTRL_TYPE_INTEGER64))
|
|
return -EINVAL;
|
|
*ctrl->p_new.p_s64 = val;
|
|
return set_ctrl(NULL, ctrl, 0);
|
|
}
|
|
EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_int64);
|
|
|
|
int __v4l2_ctrl_s_ctrl_string(struct v4l2_ctrl *ctrl, const char *s)
|
|
{
|
|
lockdep_assert_held(ctrl->handler->lock);
|
|
|
|
/* It's a driver bug if this happens. */
|
|
if (WARN_ON(ctrl->type != V4L2_CTRL_TYPE_STRING))
|
|
return -EINVAL;
|
|
strscpy(ctrl->p_new.p_char, s, ctrl->maximum + 1);
|
|
return set_ctrl(NULL, ctrl, 0);
|
|
}
|
|
EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_string);
|
|
|
|
int __v4l2_ctrl_s_ctrl_compound(struct v4l2_ctrl *ctrl,
|
|
enum v4l2_ctrl_type type, const void *p)
|
|
{
|
|
lockdep_assert_held(ctrl->handler->lock);
|
|
|
|
/* It's a driver bug if this happens. */
|
|
if (WARN_ON(ctrl->type != type))
|
|
return -EINVAL;
|
|
memcpy(ctrl->p_new.p, p, ctrl->elems * ctrl->elem_size);
|
|
return set_ctrl(NULL, ctrl, 0);
|
|
}
|
|
EXPORT_SYMBOL(__v4l2_ctrl_s_ctrl_compound);
|
|
|
|
void v4l2_ctrl_request_complete(struct media_request *req,
|
|
struct v4l2_ctrl_handler *main_hdl)
|
|
{
|
|
struct media_request_object *obj;
|
|
struct v4l2_ctrl_handler *hdl;
|
|
struct v4l2_ctrl_ref *ref;
|
|
|
|
if (!req || !main_hdl)
|
|
return;
|
|
|
|
/*
|
|
* Note that it is valid if nothing was found. It means
|
|
* that this request doesn't have any controls and so just
|
|
* wants to leave the controls unchanged.
|
|
*/
|
|
obj = media_request_object_find(req, &req_ops, main_hdl);
|
|
if (!obj)
|
|
return;
|
|
hdl = container_of(obj, struct v4l2_ctrl_handler, req_obj);
|
|
|
|
list_for_each_entry(ref, &hdl->ctrl_refs, node) {
|
|
struct v4l2_ctrl *ctrl = ref->ctrl;
|
|
struct v4l2_ctrl *master = ctrl->cluster[0];
|
|
unsigned int i;
|
|
|
|
if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) {
|
|
ref->req = ref;
|
|
|
|
v4l2_ctrl_lock(master);
|
|
/* g_volatile_ctrl will update the current control values */
|
|
for (i = 0; i < master->ncontrols; i++)
|
|
cur_to_new(master->cluster[i]);
|
|
call_op(master, g_volatile_ctrl);
|
|
new_to_req(ref);
|
|
v4l2_ctrl_unlock(master);
|
|
continue;
|
|
}
|
|
if (ref->req == ref)
|
|
continue;
|
|
|
|
v4l2_ctrl_lock(ctrl);
|
|
if (ref->req) {
|
|
ptr_to_ptr(ctrl, ref->req->p_req, ref->p_req);
|
|
} else {
|
|
ptr_to_ptr(ctrl, ctrl->p_cur, ref->p_req);
|
|
/*
|
|
* Set ref->req to ensure that when userspace wants to
|
|
* obtain the controls of this request it will take
|
|
* this value and not the current value of the control.
|
|
*/
|
|
ref->req = ref;
|
|
}
|
|
v4l2_ctrl_unlock(ctrl);
|
|
}
|
|
|
|
mutex_lock(main_hdl->lock);
|
|
WARN_ON(!hdl->request_is_queued);
|
|
list_del_init(&hdl->requests_queued);
|
|
hdl->request_is_queued = false;
|
|
mutex_unlock(main_hdl->lock);
|
|
media_request_object_complete(obj);
|
|
media_request_object_put(obj);
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_request_complete);
|
|
|
|
int v4l2_ctrl_request_setup(struct media_request *req,
|
|
struct v4l2_ctrl_handler *main_hdl)
|
|
{
|
|
struct media_request_object *obj;
|
|
struct v4l2_ctrl_handler *hdl;
|
|
struct v4l2_ctrl_ref *ref;
|
|
int ret = 0;
|
|
|
|
if (!req || !main_hdl)
|
|
return 0;
|
|
|
|
if (WARN_ON(req->state != MEDIA_REQUEST_STATE_QUEUED))
|
|
return -EBUSY;
|
|
|
|
/*
|
|
* Note that it is valid if nothing was found. It means
|
|
* that this request doesn't have any controls and so just
|
|
* wants to leave the controls unchanged.
|
|
*/
|
|
obj = media_request_object_find(req, &req_ops, main_hdl);
|
|
if (!obj)
|
|
return 0;
|
|
if (obj->completed) {
|
|
media_request_object_put(obj);
|
|
return -EBUSY;
|
|
}
|
|
hdl = container_of(obj, struct v4l2_ctrl_handler, req_obj);
|
|
|
|
list_for_each_entry(ref, &hdl->ctrl_refs, node)
|
|
ref->req_done = false;
|
|
|
|
list_for_each_entry(ref, &hdl->ctrl_refs, node) {
|
|
struct v4l2_ctrl *ctrl = ref->ctrl;
|
|
struct v4l2_ctrl *master = ctrl->cluster[0];
|
|
bool have_new_data = false;
|
|
int i;
|
|
|
|
/*
|
|
* Skip if this control was already handled by a cluster.
|
|
* Skip button controls and read-only controls.
|
|
*/
|
|
if (ref->req_done || (ctrl->flags & V4L2_CTRL_FLAG_READ_ONLY))
|
|
continue;
|
|
|
|
v4l2_ctrl_lock(master);
|
|
for (i = 0; i < master->ncontrols; i++) {
|
|
if (master->cluster[i]) {
|
|
struct v4l2_ctrl_ref *r =
|
|
find_ref(hdl, master->cluster[i]->id);
|
|
|
|
if (r->req && r == r->req) {
|
|
have_new_data = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (!have_new_data) {
|
|
v4l2_ctrl_unlock(master);
|
|
continue;
|
|
}
|
|
|
|
for (i = 0; i < master->ncontrols; i++) {
|
|
if (master->cluster[i]) {
|
|
struct v4l2_ctrl_ref *r =
|
|
find_ref(hdl, master->cluster[i]->id);
|
|
|
|
req_to_new(r);
|
|
master->cluster[i]->is_new = 1;
|
|
r->req_done = true;
|
|
}
|
|
}
|
|
/*
|
|
* For volatile autoclusters that are currently in auto mode
|
|
* we need to discover if it will be set to manual mode.
|
|
* If so, then we have to copy the current volatile values
|
|
* first since those will become the new manual values (which
|
|
* may be overwritten by explicit new values from this set
|
|
* of controls).
|
|
*/
|
|
if (master->is_auto && master->has_volatiles &&
|
|
!is_cur_manual(master)) {
|
|
s32 new_auto_val = *master->p_new.p_s32;
|
|
|
|
/*
|
|
* If the new value == the manual value, then copy
|
|
* the current volatile values.
|
|
*/
|
|
if (new_auto_val == master->manual_mode_value)
|
|
update_from_auto_cluster(master);
|
|
}
|
|
|
|
ret = try_or_set_cluster(NULL, master, true, 0);
|
|
v4l2_ctrl_unlock(master);
|
|
|
|
if (ret)
|
|
break;
|
|
}
|
|
|
|
media_request_object_put(obj);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_request_setup);
|
|
|
|
void v4l2_ctrl_notify(struct v4l2_ctrl *ctrl, v4l2_ctrl_notify_fnc notify, void *priv)
|
|
{
|
|
if (ctrl == NULL)
|
|
return;
|
|
if (notify == NULL) {
|
|
ctrl->call_notify = 0;
|
|
return;
|
|
}
|
|
if (WARN_ON(ctrl->handler->notify && ctrl->handler->notify != notify))
|
|
return;
|
|
ctrl->handler->notify = notify;
|
|
ctrl->handler->notify_priv = priv;
|
|
ctrl->call_notify = 1;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_notify);
|
|
|
|
int __v4l2_ctrl_modify_range(struct v4l2_ctrl *ctrl,
|
|
s64 min, s64 max, u64 step, s64 def)
|
|
{
|
|
bool value_changed;
|
|
bool range_changed = false;
|
|
int ret;
|
|
|
|
lockdep_assert_held(ctrl->handler->lock);
|
|
|
|
switch (ctrl->type) {
|
|
case V4L2_CTRL_TYPE_INTEGER:
|
|
case V4L2_CTRL_TYPE_INTEGER64:
|
|
case V4L2_CTRL_TYPE_BOOLEAN:
|
|
case V4L2_CTRL_TYPE_MENU:
|
|
case V4L2_CTRL_TYPE_INTEGER_MENU:
|
|
case V4L2_CTRL_TYPE_BITMASK:
|
|
case V4L2_CTRL_TYPE_U8:
|
|
case V4L2_CTRL_TYPE_U16:
|
|
case V4L2_CTRL_TYPE_U32:
|
|
if (ctrl->is_array)
|
|
return -EINVAL;
|
|
ret = check_range(ctrl->type, min, max, step, def);
|
|
if (ret)
|
|
return ret;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
if ((ctrl->minimum != min) || (ctrl->maximum != max) ||
|
|
(ctrl->step != step) || ctrl->default_value != def) {
|
|
range_changed = true;
|
|
ctrl->minimum = min;
|
|
ctrl->maximum = max;
|
|
ctrl->step = step;
|
|
ctrl->default_value = def;
|
|
}
|
|
cur_to_new(ctrl);
|
|
if (validate_new(ctrl, ctrl->p_new)) {
|
|
if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64)
|
|
*ctrl->p_new.p_s64 = def;
|
|
else
|
|
*ctrl->p_new.p_s32 = def;
|
|
}
|
|
|
|
if (ctrl->type == V4L2_CTRL_TYPE_INTEGER64)
|
|
value_changed = *ctrl->p_new.p_s64 != *ctrl->p_cur.p_s64;
|
|
else
|
|
value_changed = *ctrl->p_new.p_s32 != *ctrl->p_cur.p_s32;
|
|
if (value_changed)
|
|
ret = set_ctrl(NULL, ctrl, V4L2_EVENT_CTRL_CH_RANGE);
|
|
else if (range_changed)
|
|
send_event(NULL, ctrl, V4L2_EVENT_CTRL_CH_RANGE);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(__v4l2_ctrl_modify_range);
|
|
|
|
static int v4l2_ctrl_add_event(struct v4l2_subscribed_event *sev, unsigned elems)
|
|
{
|
|
struct v4l2_ctrl *ctrl = v4l2_ctrl_find(sev->fh->ctrl_handler, sev->id);
|
|
|
|
if (ctrl == NULL)
|
|
return -EINVAL;
|
|
|
|
v4l2_ctrl_lock(ctrl);
|
|
list_add_tail(&sev->node, &ctrl->ev_subs);
|
|
if (ctrl->type != V4L2_CTRL_TYPE_CTRL_CLASS &&
|
|
(sev->flags & V4L2_EVENT_SUB_FL_SEND_INITIAL)) {
|
|
struct v4l2_event ev;
|
|
u32 changes = V4L2_EVENT_CTRL_CH_FLAGS;
|
|
|
|
if (!(ctrl->flags & V4L2_CTRL_FLAG_WRITE_ONLY))
|
|
changes |= V4L2_EVENT_CTRL_CH_VALUE;
|
|
fill_event(&ev, ctrl, changes);
|
|
/* Mark the queue as active, allowing this initial
|
|
event to be accepted. */
|
|
sev->elems = elems;
|
|
v4l2_event_queue_fh(sev->fh, &ev);
|
|
}
|
|
v4l2_ctrl_unlock(ctrl);
|
|
return 0;
|
|
}
|
|
|
|
static void v4l2_ctrl_del_event(struct v4l2_subscribed_event *sev)
|
|
{
|
|
struct v4l2_ctrl *ctrl = v4l2_ctrl_find(sev->fh->ctrl_handler, sev->id);
|
|
|
|
if (ctrl == NULL)
|
|
return;
|
|
|
|
v4l2_ctrl_lock(ctrl);
|
|
list_del(&sev->node);
|
|
v4l2_ctrl_unlock(ctrl);
|
|
}
|
|
|
|
void v4l2_ctrl_replace(struct v4l2_event *old, const struct v4l2_event *new)
|
|
{
|
|
u32 old_changes = old->u.ctrl.changes;
|
|
|
|
old->u.ctrl = new->u.ctrl;
|
|
old->u.ctrl.changes |= old_changes;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_replace);
|
|
|
|
void v4l2_ctrl_merge(const struct v4l2_event *old, struct v4l2_event *new)
|
|
{
|
|
new->u.ctrl.changes |= old->u.ctrl.changes;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_merge);
|
|
|
|
const struct v4l2_subscribed_event_ops v4l2_ctrl_sub_ev_ops = {
|
|
.add = v4l2_ctrl_add_event,
|
|
.del = v4l2_ctrl_del_event,
|
|
.replace = v4l2_ctrl_replace,
|
|
.merge = v4l2_ctrl_merge,
|
|
};
|
|
EXPORT_SYMBOL(v4l2_ctrl_sub_ev_ops);
|
|
|
|
int v4l2_ctrl_log_status(struct file *file, void *fh)
|
|
{
|
|
struct video_device *vfd = video_devdata(file);
|
|
struct v4l2_fh *vfh = file->private_data;
|
|
|
|
if (test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags) && vfd->v4l2_dev)
|
|
v4l2_ctrl_handler_log_status(vfh->ctrl_handler,
|
|
vfd->v4l2_dev->name);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_log_status);
|
|
|
|
int v4l2_ctrl_subscribe_event(struct v4l2_fh *fh,
|
|
const struct v4l2_event_subscription *sub)
|
|
{
|
|
if (sub->type == V4L2_EVENT_CTRL)
|
|
return v4l2_event_subscribe(fh, sub, 0, &v4l2_ctrl_sub_ev_ops);
|
|
return -EINVAL;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_subscribe_event);
|
|
|
|
int v4l2_ctrl_subdev_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
|
|
struct v4l2_event_subscription *sub)
|
|
{
|
|
if (!sd->ctrl_handler)
|
|
return -EINVAL;
|
|
return v4l2_ctrl_subscribe_event(fh, sub);
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_subdev_subscribe_event);
|
|
|
|
__poll_t v4l2_ctrl_poll(struct file *file, struct poll_table_struct *wait)
|
|
{
|
|
struct v4l2_fh *fh = file->private_data;
|
|
|
|
poll_wait(file, &fh->wait, wait);
|
|
if (v4l2_event_pending(fh))
|
|
return EPOLLPRI;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_poll);
|
|
|
|
int v4l2_ctrl_new_fwnode_properties(struct v4l2_ctrl_handler *hdl,
|
|
const struct v4l2_ctrl_ops *ctrl_ops,
|
|
const struct v4l2_fwnode_device_properties *p)
|
|
{
|
|
if (p->orientation != V4L2_FWNODE_PROPERTY_UNSET) {
|
|
u32 orientation_ctrl;
|
|
|
|
switch (p->orientation) {
|
|
case V4L2_FWNODE_ORIENTATION_FRONT:
|
|
orientation_ctrl = V4L2_CAMERA_ORIENTATION_FRONT;
|
|
break;
|
|
case V4L2_FWNODE_ORIENTATION_BACK:
|
|
orientation_ctrl = V4L2_CAMERA_ORIENTATION_BACK;
|
|
break;
|
|
case V4L2_FWNODE_ORIENTATION_EXTERNAL:
|
|
orientation_ctrl = V4L2_CAMERA_ORIENTATION_EXTERNAL;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
if (!v4l2_ctrl_new_std_menu(hdl, ctrl_ops,
|
|
V4L2_CID_CAMERA_ORIENTATION,
|
|
V4L2_CAMERA_ORIENTATION_EXTERNAL, 0,
|
|
orientation_ctrl))
|
|
return hdl->error;
|
|
}
|
|
|
|
if (p->rotation != V4L2_FWNODE_PROPERTY_UNSET) {
|
|
if (!v4l2_ctrl_new_std(hdl, ctrl_ops,
|
|
V4L2_CID_CAMERA_SENSOR_ROTATION,
|
|
p->rotation, p->rotation, 1,
|
|
p->rotation))
|
|
return hdl->error;
|
|
}
|
|
|
|
return hdl->error;
|
|
}
|
|
EXPORT_SYMBOL(v4l2_ctrl_new_fwnode_properties);
|