mirror of
https://github.com/torvalds/linux.git
synced 2024-12-26 12:52:30 +00:00
a75b9be1c2
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
132 lines
4.0 KiB
C
132 lines
4.0 KiB
C
/*
|
|
* cx18 ioctl control functions
|
|
*
|
|
* Derived from ivtv-controls.c
|
|
*
|
|
* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
* 02111-1307 USA
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include "cx18-driver.h"
|
|
#include "cx18-cards.h"
|
|
#include "cx18-ioctl.h"
|
|
#include "cx18-audio.h"
|
|
#include "cx18-mailbox.h"
|
|
#include "cx18-controls.h"
|
|
|
|
static int cx18_s_stream_vbi_fmt(struct cx2341x_handler *cxhdl, u32 fmt)
|
|
{
|
|
struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);
|
|
int type = cxhdl->stream_type->val;
|
|
|
|
if (atomic_read(&cx->ana_capturing) > 0)
|
|
return -EBUSY;
|
|
|
|
if (fmt != V4L2_MPEG_STREAM_VBI_FMT_IVTV ||
|
|
!(type == V4L2_MPEG_STREAM_TYPE_MPEG2_PS ||
|
|
type == V4L2_MPEG_STREAM_TYPE_MPEG2_DVD ||
|
|
type == V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD)) {
|
|
/* Only IVTV fmt VBI insertion & only MPEG-2 PS type streams */
|
|
cx->vbi.insert_mpeg = V4L2_MPEG_STREAM_VBI_FMT_NONE;
|
|
CX18_DEBUG_INFO("disabled insertion of sliced VBI data into "
|
|
"the MPEG stream\n");
|
|
return 0;
|
|
}
|
|
|
|
/* Allocate sliced VBI buffers if needed. */
|
|
if (cx->vbi.sliced_mpeg_data[0] == NULL) {
|
|
int i;
|
|
|
|
for (i = 0; i < CX18_VBI_FRAMES; i++) {
|
|
cx->vbi.sliced_mpeg_data[i] =
|
|
kmalloc(CX18_SLICED_MPEG_DATA_BUFSZ, GFP_KERNEL);
|
|
if (cx->vbi.sliced_mpeg_data[i] == NULL) {
|
|
while (--i >= 0) {
|
|
kfree(cx->vbi.sliced_mpeg_data[i]);
|
|
cx->vbi.sliced_mpeg_data[i] = NULL;
|
|
}
|
|
cx->vbi.insert_mpeg =
|
|
V4L2_MPEG_STREAM_VBI_FMT_NONE;
|
|
CX18_WARN("Unable to allocate buffers for "
|
|
"sliced VBI data insertion\n");
|
|
return -ENOMEM;
|
|
}
|
|
}
|
|
}
|
|
|
|
cx->vbi.insert_mpeg = fmt;
|
|
CX18_DEBUG_INFO("enabled insertion of sliced VBI data into the MPEG PS,"
|
|
"when sliced VBI is enabled\n");
|
|
|
|
/*
|
|
* If our current settings have no lines set for capture, store a valid,
|
|
* default set of service lines to capture, in our current settings.
|
|
*/
|
|
if (cx18_get_service_set(cx->vbi.sliced_in) == 0) {
|
|
if (cx->is_60hz)
|
|
cx->vbi.sliced_in->service_set =
|
|
V4L2_SLICED_CAPTION_525;
|
|
else
|
|
cx->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
|
|
cx18_expand_service_set(cx->vbi.sliced_in, cx->is_50hz);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int cx18_s_video_encoding(struct cx2341x_handler *cxhdl, u32 val)
|
|
{
|
|
struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);
|
|
int is_mpeg1 = val == V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
|
|
struct v4l2_mbus_framefmt fmt;
|
|
|
|
/* fix videodecoder resolution */
|
|
fmt.width = cxhdl->width / (is_mpeg1 ? 2 : 1);
|
|
fmt.height = cxhdl->height;
|
|
fmt.code = V4L2_MBUS_FMT_FIXED;
|
|
v4l2_subdev_call(cx->sd_av, video, s_mbus_fmt, &fmt);
|
|
return 0;
|
|
}
|
|
|
|
static int cx18_s_audio_sampling_freq(struct cx2341x_handler *cxhdl, u32 idx)
|
|
{
|
|
static const u32 freqs[3] = { 44100, 48000, 32000 };
|
|
struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);
|
|
|
|
/* The audio clock of the digitizer must match the codec sample
|
|
rate otherwise you get some very strange effects. */
|
|
if (idx < ARRAY_SIZE(freqs))
|
|
cx18_call_all(cx, audio, s_clock_freq, freqs[idx]);
|
|
return 0;
|
|
}
|
|
|
|
static int cx18_s_audio_mode(struct cx2341x_handler *cxhdl, u32 val)
|
|
{
|
|
struct cx18 *cx = container_of(cxhdl, struct cx18, cxhdl);
|
|
|
|
cx->dualwatch_stereo_mode = val;
|
|
return 0;
|
|
}
|
|
|
|
struct cx2341x_handler_ops cx18_cxhdl_ops = {
|
|
.s_audio_mode = cx18_s_audio_mode,
|
|
.s_audio_sampling_freq = cx18_s_audio_sampling_freq,
|
|
.s_video_encoding = cx18_s_video_encoding,
|
|
.s_stream_vbi_fmt = cx18_s_stream_vbi_fmt,
|
|
};
|