forked from Minki/linux
38c7c03603
Fix all device drivers to use the new video_device_node_name function. This also strips kernel log messages from the "/dev/" prefix, has the device node location is a userspace policy decision unknown to the kernel. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2063 lines
50 KiB
C
2063 lines
50 KiB
C
/****************************************************************************
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*
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* Filename: cpia2_v4l.c
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*
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* Copyright 2001, STMicrolectronics, Inc.
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* Contact: steve.miller@st.com
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* Copyright 2001,2005, Scott J. Bertin <scottbertin@yahoo.com>
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*
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* Description:
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* This is a USB driver for CPia2 based video cameras.
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* The infrastructure of this driver is based on the cpia usb driver by
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* Jochen Scharrlach and Johannes Erdfeldt.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Stripped of 2.4 stuff ready for main kernel submit by
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* Alan Cox <alan@lxorguk.ukuu.org.uk>
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****************************************************************************/
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#include <linux/version.h>
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#include <linux/module.h>
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#include <linux/time.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/videodev.h>
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#include <media/v4l2-ioctl.h>
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#include "cpia2.h"
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#include "cpia2dev.h"
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//#define _CPIA2_DEBUG_
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#define MAKE_STRING_1(x) #x
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#define MAKE_STRING(x) MAKE_STRING_1(x)
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static int video_nr = -1;
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module_param(video_nr, int, 0);
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MODULE_PARM_DESC(video_nr,"video device to register (0=/dev/video0, etc)");
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static int buffer_size = 68*1024;
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module_param(buffer_size, int, 0);
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MODULE_PARM_DESC(buffer_size, "Size for each frame buffer in bytes (default 68k)");
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static int num_buffers = 3;
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module_param(num_buffers, int, 0);
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MODULE_PARM_DESC(num_buffers, "Number of frame buffers (1-"
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MAKE_STRING(VIDEO_MAX_FRAME) ", default 3)");
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static int alternate = DEFAULT_ALT;
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module_param(alternate, int, 0);
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MODULE_PARM_DESC(alternate, "USB Alternate (" MAKE_STRING(USBIF_ISO_1) "-"
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MAKE_STRING(USBIF_ISO_6) ", default "
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MAKE_STRING(DEFAULT_ALT) ")");
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static int flicker_freq = 60;
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module_param(flicker_freq, int, 0);
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MODULE_PARM_DESC(flicker_freq, "Flicker frequency (" MAKE_STRING(50) "or"
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MAKE_STRING(60) ", default "
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MAKE_STRING(60) ")");
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static int flicker_mode = NEVER_FLICKER;
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module_param(flicker_mode, int, 0);
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MODULE_PARM_DESC(flicker_mode,
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"Flicker supression (" MAKE_STRING(NEVER_FLICKER) "or"
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MAKE_STRING(ANTI_FLICKER_ON) ", default "
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MAKE_STRING(NEVER_FLICKER) ")");
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MODULE_AUTHOR("Steve Miller (STMicroelectronics) <steve.miller@st.com>");
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MODULE_DESCRIPTION("V4L-driver for STMicroelectronics CPiA2 based cameras");
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MODULE_SUPPORTED_DEVICE("video");
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MODULE_LICENSE("GPL");
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#define ABOUT "V4L-Driver for Vision CPiA2 based cameras"
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struct control_menu_info {
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int value;
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char name[32];
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};
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static struct control_menu_info framerate_controls[] =
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{
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{ CPIA2_VP_FRAMERATE_6_25, "6.25 fps" },
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{ CPIA2_VP_FRAMERATE_7_5, "7.5 fps" },
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{ CPIA2_VP_FRAMERATE_12_5, "12.5 fps" },
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{ CPIA2_VP_FRAMERATE_15, "15 fps" },
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{ CPIA2_VP_FRAMERATE_25, "25 fps" },
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{ CPIA2_VP_FRAMERATE_30, "30 fps" },
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};
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#define NUM_FRAMERATE_CONTROLS (ARRAY_SIZE(framerate_controls))
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static struct control_menu_info flicker_controls[] =
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{
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{ NEVER_FLICKER, "Off" },
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{ FLICKER_50, "50 Hz" },
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{ FLICKER_60, "60 Hz" },
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};
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#define NUM_FLICKER_CONTROLS (ARRAY_SIZE(flicker_controls))
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static struct control_menu_info lights_controls[] =
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{
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{ 0, "Off" },
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{ 64, "Top" },
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{ 128, "Bottom" },
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{ 192, "Both" },
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};
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#define NUM_LIGHTS_CONTROLS (ARRAY_SIZE(lights_controls))
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#define GPIO_LIGHTS_MASK 192
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static struct v4l2_queryctrl controls[] = {
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{
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.id = V4L2_CID_BRIGHTNESS,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "Brightness",
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.minimum = 0,
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.maximum = 255,
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.step = 1,
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.default_value = DEFAULT_BRIGHTNESS,
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},
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{
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.id = V4L2_CID_CONTRAST,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "Contrast",
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.minimum = 0,
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.maximum = 255,
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.step = 1,
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.default_value = DEFAULT_CONTRAST,
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},
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{
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.id = V4L2_CID_SATURATION,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "Saturation",
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.minimum = 0,
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.maximum = 255,
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.step = 1,
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.default_value = DEFAULT_SATURATION,
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},
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{
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.id = V4L2_CID_HFLIP,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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.name = "Mirror Horizontally",
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.minimum = 0,
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.maximum = 1,
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.step = 1,
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.default_value = 0,
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},
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{
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.id = V4L2_CID_VFLIP,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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.name = "Flip Vertically",
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.minimum = 0,
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.maximum = 1,
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.step = 1,
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.default_value = 0,
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},
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{
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.id = CPIA2_CID_TARGET_KB,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "Target KB",
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.minimum = 0,
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.maximum = 255,
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.step = 1,
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.default_value = DEFAULT_TARGET_KB,
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},
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{
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.id = CPIA2_CID_GPIO,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "GPIO",
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.minimum = 0,
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.maximum = 255,
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.step = 1,
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.default_value = 0,
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},
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{
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.id = CPIA2_CID_FLICKER_MODE,
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.type = V4L2_CTRL_TYPE_MENU,
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.name = "Flicker Reduction",
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.minimum = 0,
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.maximum = NUM_FLICKER_CONTROLS-1,
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.step = 1,
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.default_value = 0,
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},
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{
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.id = CPIA2_CID_FRAMERATE,
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.type = V4L2_CTRL_TYPE_MENU,
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.name = "Framerate",
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.minimum = 0,
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.maximum = NUM_FRAMERATE_CONTROLS-1,
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.step = 1,
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.default_value = NUM_FRAMERATE_CONTROLS-1,
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},
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{
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.id = CPIA2_CID_USB_ALT,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "USB Alternate",
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.minimum = USBIF_ISO_1,
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.maximum = USBIF_ISO_6,
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.step = 1,
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.default_value = DEFAULT_ALT,
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},
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{
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.id = CPIA2_CID_LIGHTS,
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.type = V4L2_CTRL_TYPE_MENU,
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.name = "Lights",
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.minimum = 0,
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.maximum = NUM_LIGHTS_CONTROLS-1,
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.step = 1,
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.default_value = 0,
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},
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{
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.id = CPIA2_CID_RESET_CAMERA,
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.type = V4L2_CTRL_TYPE_BUTTON,
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.name = "Reset Camera",
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.minimum = 0,
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.maximum = 0,
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.step = 0,
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.default_value = 0,
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},
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};
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#define NUM_CONTROLS (ARRAY_SIZE(controls))
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/******************************************************************************
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*
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* cpia2_open
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*
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*****************************************************************************/
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static int cpia2_open(struct file *file)
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{
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struct camera_data *cam = video_drvdata(file);
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int retval = 0;
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if (!cam) {
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ERR("Internal error, camera_data not found!\n");
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return -ENODEV;
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}
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if(mutex_lock_interruptible(&cam->busy_lock))
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return -ERESTARTSYS;
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if(!cam->present) {
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retval = -ENODEV;
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goto err_return;
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}
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if (cam->open_count > 0) {
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goto skip_init;
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}
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if (cpia2_allocate_buffers(cam)) {
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retval = -ENOMEM;
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goto err_return;
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}
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/* reset the camera */
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if (cpia2_reset_camera(cam) < 0) {
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retval = -EIO;
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goto err_return;
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}
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cam->APP_len = 0;
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cam->COM_len = 0;
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skip_init:
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{
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struct cpia2_fh *fh = kmalloc(sizeof(*fh),GFP_KERNEL);
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if(!fh) {
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retval = -ENOMEM;
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goto err_return;
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}
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file->private_data = fh;
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fh->prio = V4L2_PRIORITY_UNSET;
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v4l2_prio_open(&cam->prio, &fh->prio);
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fh->mmapped = 0;
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}
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++cam->open_count;
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cpia2_dbg_dump_registers(cam);
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err_return:
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mutex_unlock(&cam->busy_lock);
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return retval;
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}
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/******************************************************************************
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*
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* cpia2_close
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*
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*****************************************************************************/
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static int cpia2_close(struct file *file)
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{
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struct video_device *dev = video_devdata(file);
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struct camera_data *cam = video_get_drvdata(dev);
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struct cpia2_fh *fh = file->private_data;
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mutex_lock(&cam->busy_lock);
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if (cam->present &&
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(cam->open_count == 1
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|| fh->prio == V4L2_PRIORITY_RECORD
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)) {
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cpia2_usb_stream_stop(cam);
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if(cam->open_count == 1) {
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/* save camera state for later open */
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cpia2_save_camera_state(cam);
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cpia2_set_low_power(cam);
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cpia2_free_buffers(cam);
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}
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}
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{
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if(fh->mmapped)
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cam->mmapped = 0;
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v4l2_prio_close(&cam->prio,&fh->prio);
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file->private_data = NULL;
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kfree(fh);
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}
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if (--cam->open_count == 0) {
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cpia2_free_buffers(cam);
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if (!cam->present) {
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video_unregister_device(dev);
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mutex_unlock(&cam->busy_lock);
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kfree(cam);
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return 0;
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}
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}
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mutex_unlock(&cam->busy_lock);
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return 0;
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}
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/******************************************************************************
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*
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* cpia2_v4l_read
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*
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*****************************************************************************/
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static ssize_t cpia2_v4l_read(struct file *file, char __user *buf, size_t count,
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loff_t *off)
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{
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struct camera_data *cam = video_drvdata(file);
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int noblock = file->f_flags&O_NONBLOCK;
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struct cpia2_fh *fh = file->private_data;
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if(!cam)
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return -EINVAL;
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/* Priority check */
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if(fh->prio != V4L2_PRIORITY_RECORD) {
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return -EBUSY;
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}
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return cpia2_read(cam, buf, count, noblock);
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}
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|
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/******************************************************************************
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*
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* cpia2_v4l_poll
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*
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*****************************************************************************/
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static unsigned int cpia2_v4l_poll(struct file *filp, struct poll_table_struct *wait)
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{
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struct camera_data *cam = video_drvdata(filp);
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struct cpia2_fh *fh = filp->private_data;
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if(!cam)
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return POLLERR;
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|
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/* Priority check */
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if(fh->prio != V4L2_PRIORITY_RECORD) {
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return POLLERR;
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}
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return cpia2_poll(cam, filp, wait);
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}
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|
|
|
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/******************************************************************************
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*
|
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* ioctl_cap_query
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*
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*****************************************************************************/
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static int ioctl_cap_query(void *arg, struct camera_data *cam)
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{
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struct video_capability *vc;
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int retval = 0;
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vc = arg;
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|
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if (cam->params.pnp_id.product == 0x151)
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strcpy(vc->name, "QX5 Microscope");
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else
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strcpy(vc->name, "CPiA2 Camera");
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|
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vc->type = VID_TYPE_CAPTURE | VID_TYPE_MJPEG_ENCODER;
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vc->channels = 1;
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vc->audios = 0;
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vc->minwidth = 176; /* VIDEOSIZE_QCIF */
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vc->minheight = 144;
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switch (cam->params.version.sensor_flags) {
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case CPIA2_VP_SENSOR_FLAGS_500:
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vc->maxwidth = STV_IMAGE_VGA_COLS;
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vc->maxheight = STV_IMAGE_VGA_ROWS;
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break;
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case CPIA2_VP_SENSOR_FLAGS_410:
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vc->maxwidth = STV_IMAGE_CIF_COLS;
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vc->maxheight = STV_IMAGE_CIF_ROWS;
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break;
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default:
|
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return -EINVAL;
|
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}
|
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|
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return retval;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_get_channel
|
|
*
|
|
*****************************************************************************/
|
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static int ioctl_get_channel(void *arg)
|
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{
|
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int retval = 0;
|
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struct video_channel *v;
|
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v = arg;
|
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|
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if (v->channel != 0)
|
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return -EINVAL;
|
|
|
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v->channel = 0;
|
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strcpy(v->name, "Camera");
|
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v->tuners = 0;
|
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v->flags = 0;
|
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v->type = VIDEO_TYPE_CAMERA;
|
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v->norm = 0;
|
|
|
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return retval;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_set_channel
|
|
*
|
|
*****************************************************************************/
|
|
static int ioctl_set_channel(void *arg)
|
|
{
|
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struct video_channel *v;
|
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int retval = 0;
|
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v = arg;
|
|
|
|
if (retval == 0 && v->channel != 0)
|
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retval = -EINVAL;
|
|
|
|
return retval;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_set_image_prop
|
|
*
|
|
*****************************************************************************/
|
|
static int ioctl_set_image_prop(void *arg, struct camera_data *cam)
|
|
{
|
|
struct video_picture *vp;
|
|
int retval = 0;
|
|
vp = arg;
|
|
|
|
/* brightness, color, contrast need no check 0-65535 */
|
|
memcpy(&cam->vp, vp, sizeof(*vp));
|
|
|
|
/* update cam->params.colorParams */
|
|
cam->params.color_params.brightness = vp->brightness / 256;
|
|
cam->params.color_params.saturation = vp->colour / 256;
|
|
cam->params.color_params.contrast = vp->contrast / 256;
|
|
|
|
DBG("Requested params: bright 0x%X, sat 0x%X, contrast 0x%X\n",
|
|
cam->params.color_params.brightness,
|
|
cam->params.color_params.saturation,
|
|
cam->params.color_params.contrast);
|
|
|
|
cpia2_set_color_params(cam);
|
|
|
|
return retval;
|
|
}
|
|
|
|
static int sync(struct camera_data *cam, int frame_nr)
|
|
{
|
|
struct framebuf *frame = &cam->buffers[frame_nr];
|
|
|
|
while (1) {
|
|
if (frame->status == FRAME_READY)
|
|
return 0;
|
|
|
|
if (!cam->streaming) {
|
|
frame->status = FRAME_READY;
|
|
frame->length = 0;
|
|
return 0;
|
|
}
|
|
|
|
mutex_unlock(&cam->busy_lock);
|
|
wait_event_interruptible(cam->wq_stream,
|
|
!cam->streaming ||
|
|
frame->status == FRAME_READY);
|
|
mutex_lock(&cam->busy_lock);
|
|
if (signal_pending(current))
|
|
return -ERESTARTSYS;
|
|
if(!cam->present)
|
|
return -ENOTTY;
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_set_window_size
|
|
*
|
|
*****************************************************************************/
|
|
static int ioctl_set_window_size(void *arg, struct camera_data *cam,
|
|
struct cpia2_fh *fh)
|
|
{
|
|
/* copy_from_user, check validity, copy to internal structure */
|
|
struct video_window *vw;
|
|
int frame, err;
|
|
vw = arg;
|
|
|
|
if (vw->clipcount != 0) /* clipping not supported */
|
|
return -EINVAL;
|
|
|
|
if (vw->clips != NULL) /* clipping not supported */
|
|
return -EINVAL;
|
|
|
|
/* Ensure that only this process can change the format. */
|
|
err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD);
|
|
if(err != 0)
|
|
return err;
|
|
|
|
cam->pixelformat = V4L2_PIX_FMT_JPEG;
|
|
|
|
/* Be sure to supply the Huffman tables, this isn't MJPEG */
|
|
cam->params.compression.inhibit_htables = 0;
|
|
|
|
/* we set the video window to something smaller or equal to what
|
|
* is requested by the user???
|
|
*/
|
|
DBG("Requested width = %d, height = %d\n", vw->width, vw->height);
|
|
if (vw->width != cam->vw.width || vw->height != cam->vw.height) {
|
|
cam->vw.width = vw->width;
|
|
cam->vw.height = vw->height;
|
|
cam->params.roi.width = vw->width;
|
|
cam->params.roi.height = vw->height;
|
|
cpia2_set_format(cam);
|
|
}
|
|
|
|
for (frame = 0; frame < cam->num_frames; ++frame) {
|
|
if (cam->buffers[frame].status == FRAME_READING)
|
|
if ((err = sync(cam, frame)) < 0)
|
|
return err;
|
|
|
|
cam->buffers[frame].status = FRAME_EMPTY;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_get_mbuf
|
|
*
|
|
*****************************************************************************/
|
|
static int ioctl_get_mbuf(void *arg, struct camera_data *cam)
|
|
{
|
|
struct video_mbuf *vm;
|
|
int i;
|
|
vm = arg;
|
|
|
|
memset(vm, 0, sizeof(*vm));
|
|
vm->size = cam->frame_size*cam->num_frames;
|
|
vm->frames = cam->num_frames;
|
|
for (i = 0; i < cam->num_frames; i++)
|
|
vm->offsets[i] = cam->frame_size * i;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_mcapture
|
|
*
|
|
*****************************************************************************/
|
|
static int ioctl_mcapture(void *arg, struct camera_data *cam,
|
|
struct cpia2_fh *fh)
|
|
{
|
|
struct video_mmap *vm;
|
|
int video_size, err;
|
|
vm = arg;
|
|
|
|
if (vm->frame < 0 || vm->frame >= cam->num_frames)
|
|
return -EINVAL;
|
|
|
|
/* set video size */
|
|
video_size = cpia2_match_video_size(vm->width, vm->height);
|
|
if (cam->video_size < 0) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Ensure that only this process can change the format. */
|
|
err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD);
|
|
if(err != 0)
|
|
return err;
|
|
|
|
if (video_size != cam->video_size) {
|
|
cam->video_size = video_size;
|
|
cam->params.roi.width = vm->width;
|
|
cam->params.roi.height = vm->height;
|
|
cpia2_set_format(cam);
|
|
}
|
|
|
|
if (cam->buffers[vm->frame].status == FRAME_READING)
|
|
if ((err=sync(cam, vm->frame)) < 0)
|
|
return err;
|
|
|
|
cam->buffers[vm->frame].status = FRAME_EMPTY;
|
|
|
|
return cpia2_usb_stream_start(cam,cam->params.camera_state.stream_mode);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_sync
|
|
*
|
|
*****************************************************************************/
|
|
static int ioctl_sync(void *arg, struct camera_data *cam)
|
|
{
|
|
int frame;
|
|
|
|
frame = *(int*)arg;
|
|
|
|
if (frame < 0 || frame >= cam->num_frames)
|
|
return -EINVAL;
|
|
|
|
return sync(cam, frame);
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_set_gpio
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int ioctl_set_gpio(void *arg, struct camera_data *cam)
|
|
{
|
|
__u32 gpio_val;
|
|
|
|
gpio_val = *(__u32*) arg;
|
|
|
|
if (gpio_val &~ 0xFFU)
|
|
return -EINVAL;
|
|
|
|
return cpia2_set_gpio(cam, (unsigned char)gpio_val);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_querycap
|
|
*
|
|
* V4L2 device capabilities
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int ioctl_querycap(void *arg, struct camera_data *cam)
|
|
{
|
|
struct v4l2_capability *vc = arg;
|
|
|
|
memset(vc, 0, sizeof(*vc));
|
|
strcpy(vc->driver, "cpia2");
|
|
|
|
if (cam->params.pnp_id.product == 0x151)
|
|
strcpy(vc->card, "QX5 Microscope");
|
|
else
|
|
strcpy(vc->card, "CPiA2 Camera");
|
|
switch (cam->params.pnp_id.device_type) {
|
|
case DEVICE_STV_672:
|
|
strcat(vc->card, " (672/");
|
|
break;
|
|
case DEVICE_STV_676:
|
|
strcat(vc->card, " (676/");
|
|
break;
|
|
default:
|
|
strcat(vc->card, " (???/");
|
|
break;
|
|
}
|
|
switch (cam->params.version.sensor_flags) {
|
|
case CPIA2_VP_SENSOR_FLAGS_404:
|
|
strcat(vc->card, "404)");
|
|
break;
|
|
case CPIA2_VP_SENSOR_FLAGS_407:
|
|
strcat(vc->card, "407)");
|
|
break;
|
|
case CPIA2_VP_SENSOR_FLAGS_409:
|
|
strcat(vc->card, "409)");
|
|
break;
|
|
case CPIA2_VP_SENSOR_FLAGS_410:
|
|
strcat(vc->card, "410)");
|
|
break;
|
|
case CPIA2_VP_SENSOR_FLAGS_500:
|
|
strcat(vc->card, "500)");
|
|
break;
|
|
default:
|
|
strcat(vc->card, "???)");
|
|
break;
|
|
}
|
|
|
|
if (usb_make_path(cam->dev, vc->bus_info, sizeof(vc->bus_info)) <0)
|
|
memset(vc->bus_info,0, sizeof(vc->bus_info));
|
|
|
|
vc->version = KERNEL_VERSION(CPIA2_MAJ_VER, CPIA2_MIN_VER,
|
|
CPIA2_PATCH_VER);
|
|
|
|
vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
|
|
V4L2_CAP_READWRITE |
|
|
V4L2_CAP_STREAMING;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_input
|
|
*
|
|
* V4L2 input get/set/enumerate
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int ioctl_input(unsigned int ioclt_nr,void *arg,struct camera_data *cam)
|
|
{
|
|
struct v4l2_input *i = arg;
|
|
|
|
if(ioclt_nr != VIDIOC_G_INPUT) {
|
|
if (i->index != 0)
|
|
return -EINVAL;
|
|
}
|
|
|
|
memset(i, 0, sizeof(*i));
|
|
strcpy(i->name, "Camera");
|
|
i->type = V4L2_INPUT_TYPE_CAMERA;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_enum_fmt
|
|
*
|
|
* V4L2 format enumerate
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int ioctl_enum_fmt(void *arg,struct camera_data *cam)
|
|
{
|
|
struct v4l2_fmtdesc *f = arg;
|
|
int index = f->index;
|
|
|
|
if (index < 0 || index > 1)
|
|
return -EINVAL;
|
|
|
|
memset(f, 0, sizeof(*f));
|
|
f->index = index;
|
|
f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
|
f->flags = V4L2_FMT_FLAG_COMPRESSED;
|
|
switch(index) {
|
|
case 0:
|
|
strcpy(f->description, "MJPEG");
|
|
f->pixelformat = V4L2_PIX_FMT_MJPEG;
|
|
break;
|
|
case 1:
|
|
strcpy(f->description, "JPEG");
|
|
f->pixelformat = V4L2_PIX_FMT_JPEG;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_try_fmt
|
|
*
|
|
* V4L2 format try
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int ioctl_try_fmt(void *arg,struct camera_data *cam)
|
|
{
|
|
struct v4l2_format *f = arg;
|
|
|
|
if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
return -EINVAL;
|
|
|
|
if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG &&
|
|
f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG)
|
|
return -EINVAL;
|
|
|
|
f->fmt.pix.field = V4L2_FIELD_NONE;
|
|
f->fmt.pix.bytesperline = 0;
|
|
f->fmt.pix.sizeimage = cam->frame_size;
|
|
f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
|
|
f->fmt.pix.priv = 0;
|
|
|
|
switch (cpia2_match_video_size(f->fmt.pix.width, f->fmt.pix.height)) {
|
|
case VIDEOSIZE_VGA:
|
|
f->fmt.pix.width = 640;
|
|
f->fmt.pix.height = 480;
|
|
break;
|
|
case VIDEOSIZE_CIF:
|
|
f->fmt.pix.width = 352;
|
|
f->fmt.pix.height = 288;
|
|
break;
|
|
case VIDEOSIZE_QVGA:
|
|
f->fmt.pix.width = 320;
|
|
f->fmt.pix.height = 240;
|
|
break;
|
|
case VIDEOSIZE_288_216:
|
|
f->fmt.pix.width = 288;
|
|
f->fmt.pix.height = 216;
|
|
break;
|
|
case VIDEOSIZE_256_192:
|
|
f->fmt.pix.width = 256;
|
|
f->fmt.pix.height = 192;
|
|
break;
|
|
case VIDEOSIZE_224_168:
|
|
f->fmt.pix.width = 224;
|
|
f->fmt.pix.height = 168;
|
|
break;
|
|
case VIDEOSIZE_192_144:
|
|
f->fmt.pix.width = 192;
|
|
f->fmt.pix.height = 144;
|
|
break;
|
|
case VIDEOSIZE_QCIF:
|
|
default:
|
|
f->fmt.pix.width = 176;
|
|
f->fmt.pix.height = 144;
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_set_fmt
|
|
*
|
|
* V4L2 format set
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int ioctl_set_fmt(void *arg,struct camera_data *cam, struct cpia2_fh *fh)
|
|
{
|
|
struct v4l2_format *f = arg;
|
|
int err, frame;
|
|
|
|
err = ioctl_try_fmt(arg, cam);
|
|
if(err != 0)
|
|
return err;
|
|
|
|
/* Ensure that only this process can change the format. */
|
|
err = v4l2_prio_change(&cam->prio, &fh->prio, V4L2_PRIORITY_RECORD);
|
|
if(err != 0) {
|
|
return err;
|
|
}
|
|
|
|
cam->pixelformat = f->fmt.pix.pixelformat;
|
|
|
|
/* NOTE: This should be set to 1 for MJPEG, but some apps don't handle
|
|
* the missing Huffman table properly. */
|
|
cam->params.compression.inhibit_htables = 0;
|
|
/*f->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG;*/
|
|
|
|
/* we set the video window to something smaller or equal to what
|
|
* is requested by the user???
|
|
*/
|
|
DBG("Requested width = %d, height = %d\n",
|
|
f->fmt.pix.width, f->fmt.pix.height);
|
|
if (f->fmt.pix.width != cam->vw.width ||
|
|
f->fmt.pix.height != cam->vw.height) {
|
|
cam->vw.width = f->fmt.pix.width;
|
|
cam->vw.height = f->fmt.pix.height;
|
|
cam->params.roi.width = f->fmt.pix.width;
|
|
cam->params.roi.height = f->fmt.pix.height;
|
|
cpia2_set_format(cam);
|
|
}
|
|
|
|
for (frame = 0; frame < cam->num_frames; ++frame) {
|
|
if (cam->buffers[frame].status == FRAME_READING)
|
|
if ((err = sync(cam, frame)) < 0)
|
|
return err;
|
|
|
|
cam->buffers[frame].status = FRAME_EMPTY;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_get_fmt
|
|
*
|
|
* V4L2 format get
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int ioctl_get_fmt(void *arg,struct camera_data *cam)
|
|
{
|
|
struct v4l2_format *f = arg;
|
|
|
|
if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
return -EINVAL;
|
|
|
|
f->fmt.pix.width = cam->vw.width;
|
|
f->fmt.pix.height = cam->vw.height;
|
|
f->fmt.pix.pixelformat = cam->pixelformat;
|
|
f->fmt.pix.field = V4L2_FIELD_NONE;
|
|
f->fmt.pix.bytesperline = 0;
|
|
f->fmt.pix.sizeimage = cam->frame_size;
|
|
f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG;
|
|
f->fmt.pix.priv = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_cropcap
|
|
*
|
|
* V4L2 query cropping capabilities
|
|
* NOTE: cropping is currently disabled
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int ioctl_cropcap(void *arg,struct camera_data *cam)
|
|
{
|
|
struct v4l2_cropcap *c = arg;
|
|
|
|
if (c->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
return -EINVAL;
|
|
|
|
c->bounds.left = 0;
|
|
c->bounds.top = 0;
|
|
c->bounds.width = cam->vw.width;
|
|
c->bounds.height = cam->vw.height;
|
|
c->defrect.left = 0;
|
|
c->defrect.top = 0;
|
|
c->defrect.width = cam->vw.width;
|
|
c->defrect.height = cam->vw.height;
|
|
c->pixelaspect.numerator = 1;
|
|
c->pixelaspect.denominator = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_queryctrl
|
|
*
|
|
* V4L2 query possible control variables
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int ioctl_queryctrl(void *arg,struct camera_data *cam)
|
|
{
|
|
struct v4l2_queryctrl *c = arg;
|
|
int i;
|
|
|
|
for(i=0; i<NUM_CONTROLS; ++i) {
|
|
if(c->id == controls[i].id) {
|
|
memcpy(c, controls+i, sizeof(*c));
|
|
break;
|
|
}
|
|
}
|
|
|
|
if(i == NUM_CONTROLS)
|
|
return -EINVAL;
|
|
|
|
/* Some devices have additional limitations */
|
|
switch(c->id) {
|
|
case V4L2_CID_BRIGHTNESS:
|
|
/***
|
|
* Don't let the register be set to zero - bug in VP4
|
|
* flash of full brightness
|
|
***/
|
|
if (cam->params.pnp_id.device_type == DEVICE_STV_672)
|
|
c->minimum = 1;
|
|
break;
|
|
case V4L2_CID_VFLIP:
|
|
// VP5 Only
|
|
if(cam->params.pnp_id.device_type == DEVICE_STV_672)
|
|
c->flags |= V4L2_CTRL_FLAG_DISABLED;
|
|
break;
|
|
case CPIA2_CID_FRAMERATE:
|
|
if(cam->params.pnp_id.device_type == DEVICE_STV_672 &&
|
|
cam->params.version.sensor_flags==CPIA2_VP_SENSOR_FLAGS_500){
|
|
// Maximum 15fps
|
|
for(i=0; i<c->maximum; ++i) {
|
|
if(framerate_controls[i].value ==
|
|
CPIA2_VP_FRAMERATE_15) {
|
|
c->maximum = i;
|
|
c->default_value = i;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case CPIA2_CID_FLICKER_MODE:
|
|
// Flicker control only valid for 672.
|
|
if(cam->params.pnp_id.device_type != DEVICE_STV_672)
|
|
c->flags |= V4L2_CTRL_FLAG_DISABLED;
|
|
break;
|
|
case CPIA2_CID_LIGHTS:
|
|
// Light control only valid for the QX5 Microscope.
|
|
if(cam->params.pnp_id.product != 0x151)
|
|
c->flags |= V4L2_CTRL_FLAG_DISABLED;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_querymenu
|
|
*
|
|
* V4L2 query possible control variables
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int ioctl_querymenu(void *arg,struct camera_data *cam)
|
|
{
|
|
struct v4l2_querymenu *m = arg;
|
|
|
|
memset(m->name, 0, sizeof(m->name));
|
|
m->reserved = 0;
|
|
|
|
switch(m->id) {
|
|
case CPIA2_CID_FLICKER_MODE:
|
|
if (m->index >= NUM_FLICKER_CONTROLS)
|
|
return -EINVAL;
|
|
|
|
strcpy(m->name, flicker_controls[m->index].name);
|
|
break;
|
|
case CPIA2_CID_FRAMERATE:
|
|
{
|
|
int maximum = NUM_FRAMERATE_CONTROLS - 1;
|
|
if(cam->params.pnp_id.device_type == DEVICE_STV_672 &&
|
|
cam->params.version.sensor_flags==CPIA2_VP_SENSOR_FLAGS_500){
|
|
// Maximum 15fps
|
|
int i;
|
|
for(i=0; i<maximum; ++i) {
|
|
if(framerate_controls[i].value ==
|
|
CPIA2_VP_FRAMERATE_15)
|
|
maximum = i;
|
|
}
|
|
}
|
|
if (m->index > maximum)
|
|
return -EINVAL;
|
|
|
|
strcpy(m->name, framerate_controls[m->index].name);
|
|
break;
|
|
}
|
|
case CPIA2_CID_LIGHTS:
|
|
if (m->index >= NUM_LIGHTS_CONTROLS)
|
|
return -EINVAL;
|
|
|
|
strcpy(m->name, lights_controls[m->index].name);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_g_ctrl
|
|
*
|
|
* V4L2 get the value of a control variable
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int ioctl_g_ctrl(void *arg,struct camera_data *cam)
|
|
{
|
|
struct v4l2_control *c = arg;
|
|
|
|
switch(c->id) {
|
|
case V4L2_CID_BRIGHTNESS:
|
|
cpia2_do_command(cam, CPIA2_CMD_GET_VP_BRIGHTNESS,
|
|
TRANSFER_READ, 0);
|
|
c->value = cam->params.color_params.brightness;
|
|
break;
|
|
case V4L2_CID_CONTRAST:
|
|
cpia2_do_command(cam, CPIA2_CMD_GET_CONTRAST,
|
|
TRANSFER_READ, 0);
|
|
c->value = cam->params.color_params.contrast;
|
|
break;
|
|
case V4L2_CID_SATURATION:
|
|
cpia2_do_command(cam, CPIA2_CMD_GET_VP_SATURATION,
|
|
TRANSFER_READ, 0);
|
|
c->value = cam->params.color_params.saturation;
|
|
break;
|
|
case V4L2_CID_HFLIP:
|
|
cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS,
|
|
TRANSFER_READ, 0);
|
|
c->value = (cam->params.vp_params.user_effects &
|
|
CPIA2_VP_USER_EFFECTS_MIRROR) != 0;
|
|
break;
|
|
case V4L2_CID_VFLIP:
|
|
cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS,
|
|
TRANSFER_READ, 0);
|
|
c->value = (cam->params.vp_params.user_effects &
|
|
CPIA2_VP_USER_EFFECTS_FLIP) != 0;
|
|
break;
|
|
case CPIA2_CID_TARGET_KB:
|
|
c->value = cam->params.vc_params.target_kb;
|
|
break;
|
|
case CPIA2_CID_GPIO:
|
|
cpia2_do_command(cam, CPIA2_CMD_GET_VP_GPIO_DATA,
|
|
TRANSFER_READ, 0);
|
|
c->value = cam->params.vp_params.gpio_data;
|
|
break;
|
|
case CPIA2_CID_FLICKER_MODE:
|
|
{
|
|
int i, mode;
|
|
cpia2_do_command(cam, CPIA2_CMD_GET_FLICKER_MODES,
|
|
TRANSFER_READ, 0);
|
|
if(cam->params.flicker_control.cam_register &
|
|
CPIA2_VP_FLICKER_MODES_NEVER_FLICKER) {
|
|
mode = NEVER_FLICKER;
|
|
} else {
|
|
if(cam->params.flicker_control.cam_register &
|
|
CPIA2_VP_FLICKER_MODES_50HZ) {
|
|
mode = FLICKER_50;
|
|
} else {
|
|
mode = FLICKER_60;
|
|
}
|
|
}
|
|
for(i=0; i<NUM_FLICKER_CONTROLS; i++) {
|
|
if(flicker_controls[i].value == mode) {
|
|
c->value = i;
|
|
break;
|
|
}
|
|
}
|
|
if(i == NUM_FLICKER_CONTROLS)
|
|
return -EINVAL;
|
|
break;
|
|
}
|
|
case CPIA2_CID_FRAMERATE:
|
|
{
|
|
int maximum = NUM_FRAMERATE_CONTROLS - 1;
|
|
int i;
|
|
for(i=0; i<= maximum; i++) {
|
|
if(cam->params.vp_params.frame_rate ==
|
|
framerate_controls[i].value)
|
|
break;
|
|
}
|
|
if(i > maximum)
|
|
return -EINVAL;
|
|
c->value = i;
|
|
break;
|
|
}
|
|
case CPIA2_CID_USB_ALT:
|
|
c->value = cam->params.camera_state.stream_mode;
|
|
break;
|
|
case CPIA2_CID_LIGHTS:
|
|
{
|
|
int i;
|
|
cpia2_do_command(cam, CPIA2_CMD_GET_VP_GPIO_DATA,
|
|
TRANSFER_READ, 0);
|
|
for(i=0; i<NUM_LIGHTS_CONTROLS; i++) {
|
|
if((cam->params.vp_params.gpio_data&GPIO_LIGHTS_MASK) ==
|
|
lights_controls[i].value) {
|
|
break;
|
|
}
|
|
}
|
|
if(i == NUM_LIGHTS_CONTROLS)
|
|
return -EINVAL;
|
|
c->value = i;
|
|
break;
|
|
}
|
|
case CPIA2_CID_RESET_CAMERA:
|
|
return -EINVAL;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
DBG("Get control id:%d, value:%d\n", c->id, c->value);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_s_ctrl
|
|
*
|
|
* V4L2 set the value of a control variable
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int ioctl_s_ctrl(void *arg,struct camera_data *cam)
|
|
{
|
|
struct v4l2_control *c = arg;
|
|
int i;
|
|
int retval = 0;
|
|
|
|
DBG("Set control id:%d, value:%d\n", c->id, c->value);
|
|
|
|
/* Check that the value is in range */
|
|
for(i=0; i<NUM_CONTROLS; i++) {
|
|
if(c->id == controls[i].id) {
|
|
if(c->value < controls[i].minimum ||
|
|
c->value > controls[i].maximum) {
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if(i == NUM_CONTROLS)
|
|
return -EINVAL;
|
|
|
|
switch(c->id) {
|
|
case V4L2_CID_BRIGHTNESS:
|
|
cpia2_set_brightness(cam, c->value);
|
|
break;
|
|
case V4L2_CID_CONTRAST:
|
|
cpia2_set_contrast(cam, c->value);
|
|
break;
|
|
case V4L2_CID_SATURATION:
|
|
cpia2_set_saturation(cam, c->value);
|
|
break;
|
|
case V4L2_CID_HFLIP:
|
|
cpia2_set_property_mirror(cam, c->value);
|
|
break;
|
|
case V4L2_CID_VFLIP:
|
|
cpia2_set_property_flip(cam, c->value);
|
|
break;
|
|
case CPIA2_CID_TARGET_KB:
|
|
retval = cpia2_set_target_kb(cam, c->value);
|
|
break;
|
|
case CPIA2_CID_GPIO:
|
|
retval = cpia2_set_gpio(cam, c->value);
|
|
break;
|
|
case CPIA2_CID_FLICKER_MODE:
|
|
retval = cpia2_set_flicker_mode(cam,
|
|
flicker_controls[c->value].value);
|
|
break;
|
|
case CPIA2_CID_FRAMERATE:
|
|
retval = cpia2_set_fps(cam, framerate_controls[c->value].value);
|
|
break;
|
|
case CPIA2_CID_USB_ALT:
|
|
retval = cpia2_usb_change_streaming_alternate(cam, c->value);
|
|
break;
|
|
case CPIA2_CID_LIGHTS:
|
|
retval = cpia2_set_gpio(cam, lights_controls[c->value].value);
|
|
break;
|
|
case CPIA2_CID_RESET_CAMERA:
|
|
cpia2_usb_stream_pause(cam);
|
|
cpia2_reset_camera(cam);
|
|
cpia2_usb_stream_resume(cam);
|
|
break;
|
|
default:
|
|
retval = -EINVAL;
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_g_jpegcomp
|
|
*
|
|
* V4L2 get the JPEG compression parameters
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int ioctl_g_jpegcomp(void *arg,struct camera_data *cam)
|
|
{
|
|
struct v4l2_jpegcompression *parms = arg;
|
|
|
|
memset(parms, 0, sizeof(*parms));
|
|
|
|
parms->quality = 80; // TODO: Can this be made meaningful?
|
|
|
|
parms->jpeg_markers = V4L2_JPEG_MARKER_DQT | V4L2_JPEG_MARKER_DRI;
|
|
if(!cam->params.compression.inhibit_htables) {
|
|
parms->jpeg_markers |= V4L2_JPEG_MARKER_DHT;
|
|
}
|
|
|
|
parms->APPn = cam->APPn;
|
|
parms->APP_len = cam->APP_len;
|
|
if(cam->APP_len > 0) {
|
|
memcpy(parms->APP_data, cam->APP_data, cam->APP_len);
|
|
parms->jpeg_markers |= V4L2_JPEG_MARKER_APP;
|
|
}
|
|
|
|
parms->COM_len = cam->COM_len;
|
|
if(cam->COM_len > 0) {
|
|
memcpy(parms->COM_data, cam->COM_data, cam->COM_len);
|
|
parms->jpeg_markers |= JPEG_MARKER_COM;
|
|
}
|
|
|
|
DBG("G_JPEGCOMP APP_len:%d COM_len:%d\n",
|
|
parms->APP_len, parms->COM_len);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_s_jpegcomp
|
|
*
|
|
* V4L2 set the JPEG compression parameters
|
|
* NOTE: quality and some jpeg_markers are ignored.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int ioctl_s_jpegcomp(void *arg,struct camera_data *cam)
|
|
{
|
|
struct v4l2_jpegcompression *parms = arg;
|
|
|
|
DBG("S_JPEGCOMP APP_len:%d COM_len:%d\n",
|
|
parms->APP_len, parms->COM_len);
|
|
|
|
cam->params.compression.inhibit_htables =
|
|
!(parms->jpeg_markers & V4L2_JPEG_MARKER_DHT);
|
|
|
|
if(parms->APP_len != 0) {
|
|
if(parms->APP_len > 0 &&
|
|
parms->APP_len <= sizeof(cam->APP_data) &&
|
|
parms->APPn >= 0 && parms->APPn <= 15) {
|
|
cam->APPn = parms->APPn;
|
|
cam->APP_len = parms->APP_len;
|
|
memcpy(cam->APP_data, parms->APP_data, parms->APP_len);
|
|
} else {
|
|
LOG("Bad APPn Params n=%d len=%d\n",
|
|
parms->APPn, parms->APP_len);
|
|
return -EINVAL;
|
|
}
|
|
} else {
|
|
cam->APP_len = 0;
|
|
}
|
|
|
|
if(parms->COM_len != 0) {
|
|
if(parms->COM_len > 0 &&
|
|
parms->COM_len <= sizeof(cam->COM_data)) {
|
|
cam->COM_len = parms->COM_len;
|
|
memcpy(cam->COM_data, parms->COM_data, parms->COM_len);
|
|
} else {
|
|
LOG("Bad COM_len=%d\n", parms->COM_len);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_reqbufs
|
|
*
|
|
* V4L2 Initiate memory mapping.
|
|
* NOTE: The user's request is ignored. For now the buffers are fixed.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int ioctl_reqbufs(void *arg,struct camera_data *cam)
|
|
{
|
|
struct v4l2_requestbuffers *req = arg;
|
|
|
|
if(req->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
|
|
req->memory != V4L2_MEMORY_MMAP)
|
|
return -EINVAL;
|
|
|
|
DBG("REQBUFS requested:%d returning:%d\n", req->count, cam->num_frames);
|
|
req->count = cam->num_frames;
|
|
memset(&req->reserved, 0, sizeof(req->reserved));
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_querybuf
|
|
*
|
|
* V4L2 Query memory buffer status.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int ioctl_querybuf(void *arg,struct camera_data *cam)
|
|
{
|
|
struct v4l2_buffer *buf = arg;
|
|
|
|
if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
|
|
buf->index > cam->num_frames)
|
|
return -EINVAL;
|
|
|
|
buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer;
|
|
buf->length = cam->frame_size;
|
|
|
|
buf->memory = V4L2_MEMORY_MMAP;
|
|
|
|
if(cam->mmapped)
|
|
buf->flags = V4L2_BUF_FLAG_MAPPED;
|
|
else
|
|
buf->flags = 0;
|
|
|
|
switch (cam->buffers[buf->index].status) {
|
|
case FRAME_EMPTY:
|
|
case FRAME_ERROR:
|
|
case FRAME_READING:
|
|
buf->bytesused = 0;
|
|
buf->flags = V4L2_BUF_FLAG_QUEUED;
|
|
break;
|
|
case FRAME_READY:
|
|
buf->bytesused = cam->buffers[buf->index].length;
|
|
buf->timestamp = cam->buffers[buf->index].timestamp;
|
|
buf->sequence = cam->buffers[buf->index].seq;
|
|
buf->flags = V4L2_BUF_FLAG_DONE;
|
|
break;
|
|
}
|
|
|
|
DBG("QUERYBUF index:%d offset:%d flags:%d seq:%d bytesused:%d\n",
|
|
buf->index, buf->m.offset, buf->flags, buf->sequence,
|
|
buf->bytesused);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_qbuf
|
|
*
|
|
* V4L2 User is freeing buffer
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int ioctl_qbuf(void *arg,struct camera_data *cam)
|
|
{
|
|
struct v4l2_buffer *buf = arg;
|
|
|
|
if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
|
|
buf->memory != V4L2_MEMORY_MMAP ||
|
|
buf->index > cam->num_frames)
|
|
return -EINVAL;
|
|
|
|
DBG("QBUF #%d\n", buf->index);
|
|
|
|
if(cam->buffers[buf->index].status == FRAME_READY)
|
|
cam->buffers[buf->index].status = FRAME_EMPTY;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* find_earliest_filled_buffer
|
|
*
|
|
* Helper for ioctl_dqbuf. Find the next ready buffer.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int find_earliest_filled_buffer(struct camera_data *cam)
|
|
{
|
|
int i;
|
|
int found = -1;
|
|
for (i=0; i<cam->num_frames; i++) {
|
|
if(cam->buffers[i].status == FRAME_READY) {
|
|
if(found < 0) {
|
|
found = i;
|
|
} else {
|
|
/* find which buffer is earlier */
|
|
struct timeval *tv1, *tv2;
|
|
tv1 = &cam->buffers[i].timestamp;
|
|
tv2 = &cam->buffers[found].timestamp;
|
|
if(tv1->tv_sec < tv2->tv_sec ||
|
|
(tv1->tv_sec == tv2->tv_sec &&
|
|
tv1->tv_usec < tv2->tv_usec))
|
|
found = i;
|
|
}
|
|
}
|
|
}
|
|
return found;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* ioctl_dqbuf
|
|
*
|
|
* V4L2 User is asking for a filled buffer.
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int ioctl_dqbuf(void *arg,struct camera_data *cam, struct file *file)
|
|
{
|
|
struct v4l2_buffer *buf = arg;
|
|
int frame;
|
|
|
|
if(buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
|
|
buf->memory != V4L2_MEMORY_MMAP)
|
|
return -EINVAL;
|
|
|
|
frame = find_earliest_filled_buffer(cam);
|
|
|
|
if(frame < 0 && file->f_flags&O_NONBLOCK)
|
|
return -EAGAIN;
|
|
|
|
if(frame < 0) {
|
|
/* Wait for a frame to become available */
|
|
struct framebuf *cb=cam->curbuff;
|
|
mutex_unlock(&cam->busy_lock);
|
|
wait_event_interruptible(cam->wq_stream,
|
|
!cam->present ||
|
|
(cb=cam->curbuff)->status == FRAME_READY);
|
|
mutex_lock(&cam->busy_lock);
|
|
if (signal_pending(current))
|
|
return -ERESTARTSYS;
|
|
if(!cam->present)
|
|
return -ENOTTY;
|
|
frame = cb->num;
|
|
}
|
|
|
|
|
|
buf->index = frame;
|
|
buf->bytesused = cam->buffers[buf->index].length;
|
|
buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_DONE;
|
|
buf->field = V4L2_FIELD_NONE;
|
|
buf->timestamp = cam->buffers[buf->index].timestamp;
|
|
buf->sequence = cam->buffers[buf->index].seq;
|
|
buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer;
|
|
buf->length = cam->frame_size;
|
|
buf->input = 0;
|
|
buf->reserved = 0;
|
|
memset(&buf->timecode, 0, sizeof(buf->timecode));
|
|
|
|
DBG("DQBUF #%d status:%d seq:%d length:%d\n", buf->index,
|
|
cam->buffers[buf->index].status, buf->sequence, buf->bytesused);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* cpia2_ioctl
|
|
*
|
|
*****************************************************************************/
|
|
static long cpia2_do_ioctl(struct file *file, unsigned int cmd, void *arg)
|
|
{
|
|
struct camera_data *cam = video_drvdata(file);
|
|
long retval = 0;
|
|
|
|
if (!cam)
|
|
return -ENOTTY;
|
|
|
|
/* make this _really_ smp-safe */
|
|
if (mutex_lock_interruptible(&cam->busy_lock))
|
|
return -ERESTARTSYS;
|
|
|
|
if (!cam->present) {
|
|
mutex_unlock(&cam->busy_lock);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Priority check */
|
|
switch (cmd) {
|
|
case VIDIOCSWIN:
|
|
case VIDIOCMCAPTURE:
|
|
case VIDIOC_S_FMT:
|
|
{
|
|
struct cpia2_fh *fh = file->private_data;
|
|
retval = v4l2_prio_check(&cam->prio, &fh->prio);
|
|
if(retval) {
|
|
mutex_unlock(&cam->busy_lock);
|
|
return retval;
|
|
}
|
|
break;
|
|
}
|
|
case VIDIOCGMBUF:
|
|
case VIDIOCSYNC:
|
|
{
|
|
struct cpia2_fh *fh = file->private_data;
|
|
if(fh->prio != V4L2_PRIORITY_RECORD) {
|
|
mutex_unlock(&cam->busy_lock);
|
|
return -EBUSY;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
switch (cmd) {
|
|
case VIDIOCGCAP: /* query capabilities */
|
|
retval = ioctl_cap_query(arg, cam);
|
|
break;
|
|
|
|
case VIDIOCGCHAN: /* get video source - we are a camera, nothing else */
|
|
retval = ioctl_get_channel(arg);
|
|
break;
|
|
case VIDIOCSCHAN: /* set video source - we are a camera, nothing else */
|
|
retval = ioctl_set_channel(arg);
|
|
break;
|
|
case VIDIOCGPICT: /* image properties */
|
|
memcpy(arg, &cam->vp, sizeof(struct video_picture));
|
|
break;
|
|
case VIDIOCSPICT:
|
|
retval = ioctl_set_image_prop(arg, cam);
|
|
break;
|
|
case VIDIOCGWIN: /* get/set capture window */
|
|
memcpy(arg, &cam->vw, sizeof(struct video_window));
|
|
break;
|
|
case VIDIOCSWIN:
|
|
retval = ioctl_set_window_size(arg, cam, file->private_data);
|
|
break;
|
|
case VIDIOCGMBUF: /* mmap interface */
|
|
retval = ioctl_get_mbuf(arg, cam);
|
|
break;
|
|
case VIDIOCMCAPTURE:
|
|
retval = ioctl_mcapture(arg, cam, file->private_data);
|
|
break;
|
|
case VIDIOCSYNC:
|
|
retval = ioctl_sync(arg, cam);
|
|
break;
|
|
/* pointless to implement overlay with this camera */
|
|
case VIDIOCCAPTURE:
|
|
case VIDIOCGFBUF:
|
|
case VIDIOCSFBUF:
|
|
case VIDIOCKEY:
|
|
retval = -EINVAL;
|
|
break;
|
|
|
|
/* tuner interface - we have none */
|
|
case VIDIOCGTUNER:
|
|
case VIDIOCSTUNER:
|
|
case VIDIOCGFREQ:
|
|
case VIDIOCSFREQ:
|
|
retval = -EINVAL;
|
|
break;
|
|
|
|
/* audio interface - we have none */
|
|
case VIDIOCGAUDIO:
|
|
case VIDIOCSAUDIO:
|
|
retval = -EINVAL;
|
|
break;
|
|
|
|
/* CPIA2 extension to Video4Linux API */
|
|
case CPIA2_IOC_SET_GPIO:
|
|
retval = ioctl_set_gpio(arg, cam);
|
|
break;
|
|
case VIDIOC_QUERYCAP:
|
|
retval = ioctl_querycap(arg,cam);
|
|
break;
|
|
|
|
case VIDIOC_ENUMINPUT:
|
|
case VIDIOC_G_INPUT:
|
|
case VIDIOC_S_INPUT:
|
|
retval = ioctl_input(cmd, arg, cam);
|
|
break;
|
|
|
|
case VIDIOC_ENUM_FMT:
|
|
retval = ioctl_enum_fmt(arg,cam);
|
|
break;
|
|
case VIDIOC_TRY_FMT:
|
|
retval = ioctl_try_fmt(arg,cam);
|
|
break;
|
|
case VIDIOC_G_FMT:
|
|
retval = ioctl_get_fmt(arg,cam);
|
|
break;
|
|
case VIDIOC_S_FMT:
|
|
retval = ioctl_set_fmt(arg,cam,file->private_data);
|
|
break;
|
|
|
|
case VIDIOC_CROPCAP:
|
|
retval = ioctl_cropcap(arg,cam);
|
|
break;
|
|
case VIDIOC_G_CROP:
|
|
case VIDIOC_S_CROP:
|
|
// TODO: I think cropping can be implemented - SJB
|
|
retval = -EINVAL;
|
|
break;
|
|
|
|
case VIDIOC_QUERYCTRL:
|
|
retval = ioctl_queryctrl(arg,cam);
|
|
break;
|
|
case VIDIOC_QUERYMENU:
|
|
retval = ioctl_querymenu(arg,cam);
|
|
break;
|
|
case VIDIOC_G_CTRL:
|
|
retval = ioctl_g_ctrl(arg,cam);
|
|
break;
|
|
case VIDIOC_S_CTRL:
|
|
retval = ioctl_s_ctrl(arg,cam);
|
|
break;
|
|
|
|
case VIDIOC_G_JPEGCOMP:
|
|
retval = ioctl_g_jpegcomp(arg,cam);
|
|
break;
|
|
case VIDIOC_S_JPEGCOMP:
|
|
retval = ioctl_s_jpegcomp(arg,cam);
|
|
break;
|
|
|
|
case VIDIOC_G_PRIORITY:
|
|
{
|
|
struct cpia2_fh *fh = file->private_data;
|
|
*(enum v4l2_priority*)arg = fh->prio;
|
|
break;
|
|
}
|
|
case VIDIOC_S_PRIORITY:
|
|
{
|
|
struct cpia2_fh *fh = file->private_data;
|
|
enum v4l2_priority prio;
|
|
prio = *(enum v4l2_priority*)arg;
|
|
if(cam->streaming &&
|
|
prio != fh->prio &&
|
|
fh->prio == V4L2_PRIORITY_RECORD) {
|
|
/* Can't drop record priority while streaming */
|
|
retval = -EBUSY;
|
|
} else if(prio == V4L2_PRIORITY_RECORD &&
|
|
prio != fh->prio &&
|
|
v4l2_prio_max(&cam->prio) == V4L2_PRIORITY_RECORD) {
|
|
/* Only one program can record at a time */
|
|
retval = -EBUSY;
|
|
} else {
|
|
retval = v4l2_prio_change(&cam->prio, &fh->prio, prio);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case VIDIOC_REQBUFS:
|
|
retval = ioctl_reqbufs(arg,cam);
|
|
break;
|
|
case VIDIOC_QUERYBUF:
|
|
retval = ioctl_querybuf(arg,cam);
|
|
break;
|
|
case VIDIOC_QBUF:
|
|
retval = ioctl_qbuf(arg,cam);
|
|
break;
|
|
case VIDIOC_DQBUF:
|
|
retval = ioctl_dqbuf(arg,cam,file);
|
|
break;
|
|
case VIDIOC_STREAMON:
|
|
{
|
|
int type;
|
|
DBG("VIDIOC_STREAMON, streaming=%d\n", cam->streaming);
|
|
type = *(int*)arg;
|
|
if(!cam->mmapped || type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
retval = -EINVAL;
|
|
|
|
if(!cam->streaming) {
|
|
retval = cpia2_usb_stream_start(cam,
|
|
cam->params.camera_state.stream_mode);
|
|
} else {
|
|
retval = -EINVAL;
|
|
}
|
|
|
|
break;
|
|
}
|
|
case VIDIOC_STREAMOFF:
|
|
{
|
|
int type;
|
|
DBG("VIDIOC_STREAMOFF, streaming=%d\n", cam->streaming);
|
|
type = *(int*)arg;
|
|
if(!cam->mmapped || type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
|
retval = -EINVAL;
|
|
|
|
if(cam->streaming) {
|
|
retval = cpia2_usb_stream_stop(cam);
|
|
} else {
|
|
retval = -EINVAL;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case VIDIOC_ENUMOUTPUT:
|
|
case VIDIOC_G_OUTPUT:
|
|
case VIDIOC_S_OUTPUT:
|
|
case VIDIOC_G_MODULATOR:
|
|
case VIDIOC_S_MODULATOR:
|
|
|
|
case VIDIOC_ENUMAUDIO:
|
|
case VIDIOC_G_AUDIO:
|
|
case VIDIOC_S_AUDIO:
|
|
|
|
case VIDIOC_ENUMAUDOUT:
|
|
case VIDIOC_G_AUDOUT:
|
|
case VIDIOC_S_AUDOUT:
|
|
|
|
case VIDIOC_ENUMSTD:
|
|
case VIDIOC_QUERYSTD:
|
|
case VIDIOC_G_STD:
|
|
case VIDIOC_S_STD:
|
|
|
|
case VIDIOC_G_TUNER:
|
|
case VIDIOC_S_TUNER:
|
|
case VIDIOC_G_FREQUENCY:
|
|
case VIDIOC_S_FREQUENCY:
|
|
|
|
case VIDIOC_OVERLAY:
|
|
case VIDIOC_G_FBUF:
|
|
case VIDIOC_S_FBUF:
|
|
|
|
case VIDIOC_G_PARM:
|
|
case VIDIOC_S_PARM:
|
|
retval = -EINVAL;
|
|
break;
|
|
default:
|
|
retval = -ENOIOCTLCMD;
|
|
break;
|
|
}
|
|
|
|
mutex_unlock(&cam->busy_lock);
|
|
return retval;
|
|
}
|
|
|
|
static long cpia2_ioctl(struct file *file,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
return video_usercopy(file, cmd, arg, cpia2_do_ioctl);
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* cpia2_mmap
|
|
*
|
|
*****************************************************************************/
|
|
static int cpia2_mmap(struct file *file, struct vm_area_struct *area)
|
|
{
|
|
struct camera_data *cam = video_drvdata(file);
|
|
int retval;
|
|
|
|
/* Priority check */
|
|
struct cpia2_fh *fh = file->private_data;
|
|
if(fh->prio != V4L2_PRIORITY_RECORD) {
|
|
return -EBUSY;
|
|
}
|
|
|
|
retval = cpia2_remap_buffer(cam, area);
|
|
|
|
if(!retval)
|
|
fh->mmapped = 1;
|
|
return retval;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* reset_camera_struct_v4l
|
|
*
|
|
* Sets all values to the defaults
|
|
*****************************************************************************/
|
|
static void reset_camera_struct_v4l(struct camera_data *cam)
|
|
{
|
|
/***
|
|
* Fill in the v4l structures. video_cap is filled in inside the VIDIOCCAP
|
|
* Ioctl. Here, just do the window and picture stucts.
|
|
***/
|
|
cam->vp.palette = (u16) VIDEO_PALETTE_RGB24; /* Is this right? */
|
|
cam->vp.brightness = (u16) cam->params.color_params.brightness * 256;
|
|
cam->vp.colour = (u16) cam->params.color_params.saturation * 256;
|
|
cam->vp.contrast = (u16) cam->params.color_params.contrast * 256;
|
|
|
|
cam->vw.x = 0;
|
|
cam->vw.y = 0;
|
|
cam->vw.width = cam->params.roi.width;
|
|
cam->vw.height = cam->params.roi.height;
|
|
cam->vw.flags = 0;
|
|
cam->vw.clipcount = 0;
|
|
|
|
cam->frame_size = buffer_size;
|
|
cam->num_frames = num_buffers;
|
|
|
|
/* FlickerModes */
|
|
cam->params.flicker_control.flicker_mode_req = flicker_mode;
|
|
cam->params.flicker_control.mains_frequency = flicker_freq;
|
|
|
|
/* streamMode */
|
|
cam->params.camera_state.stream_mode = alternate;
|
|
|
|
cam->pixelformat = V4L2_PIX_FMT_JPEG;
|
|
v4l2_prio_init(&cam->prio);
|
|
return;
|
|
}
|
|
|
|
/***
|
|
* The v4l video device structure initialized for this device
|
|
***/
|
|
static const struct v4l2_file_operations fops_template = {
|
|
.owner = THIS_MODULE,
|
|
.open = cpia2_open,
|
|
.release = cpia2_close,
|
|
.read = cpia2_v4l_read,
|
|
.poll = cpia2_v4l_poll,
|
|
.ioctl = cpia2_ioctl,
|
|
.mmap = cpia2_mmap,
|
|
};
|
|
|
|
static struct video_device cpia2_template = {
|
|
/* I could not find any place for the old .initialize initializer?? */
|
|
.name= "CPiA2 Camera",
|
|
.minor= -1,
|
|
.fops= &fops_template,
|
|
.release= video_device_release,
|
|
};
|
|
|
|
/******************************************************************************
|
|
*
|
|
* cpia2_register_camera
|
|
*
|
|
*****************************************************************************/
|
|
int cpia2_register_camera(struct camera_data *cam)
|
|
{
|
|
cam->vdev = video_device_alloc();
|
|
if(!cam->vdev)
|
|
return -ENOMEM;
|
|
|
|
memcpy(cam->vdev, &cpia2_template, sizeof(cpia2_template));
|
|
video_set_drvdata(cam->vdev, cam);
|
|
|
|
reset_camera_struct_v4l(cam);
|
|
|
|
/* register v4l device */
|
|
if (video_register_device(cam->vdev, VFL_TYPE_GRABBER, video_nr) < 0) {
|
|
ERR("video_register_device failed\n");
|
|
video_device_release(cam->vdev);
|
|
return -ENODEV;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* cpia2_unregister_camera
|
|
*
|
|
*****************************************************************************/
|
|
void cpia2_unregister_camera(struct camera_data *cam)
|
|
{
|
|
if (!cam->open_count) {
|
|
video_unregister_device(cam->vdev);
|
|
} else {
|
|
LOG("%s removed while open, deferring "
|
|
"video_unregister_device\n",
|
|
video_device_node_name(cam->vdev));
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
*
|
|
* check_parameters
|
|
*
|
|
* Make sure that all user-supplied parameters are sensible
|
|
*****************************************************************************/
|
|
static void __init check_parameters(void)
|
|
{
|
|
if(buffer_size < PAGE_SIZE) {
|
|
buffer_size = PAGE_SIZE;
|
|
LOG("buffer_size too small, setting to %d\n", buffer_size);
|
|
} else if(buffer_size > 1024*1024) {
|
|
/* arbitrary upper limiit */
|
|
buffer_size = 1024*1024;
|
|
LOG("buffer_size ridiculously large, setting to %d\n",
|
|
buffer_size);
|
|
} else {
|
|
buffer_size += PAGE_SIZE-1;
|
|
buffer_size &= ~(PAGE_SIZE-1);
|
|
}
|
|
|
|
if(num_buffers < 1) {
|
|
num_buffers = 1;
|
|
LOG("num_buffers too small, setting to %d\n", num_buffers);
|
|
} else if(num_buffers > VIDEO_MAX_FRAME) {
|
|
num_buffers = VIDEO_MAX_FRAME;
|
|
LOG("num_buffers too large, setting to %d\n", num_buffers);
|
|
}
|
|
|
|
if(alternate < USBIF_ISO_1 || alternate > USBIF_ISO_6) {
|
|
alternate = DEFAULT_ALT;
|
|
LOG("alternate specified is invalid, using %d\n", alternate);
|
|
}
|
|
|
|
if (flicker_mode != NEVER_FLICKER && flicker_mode != ANTI_FLICKER_ON) {
|
|
flicker_mode = NEVER_FLICKER;
|
|
LOG("Flicker mode specified is invalid, using %d\n",
|
|
flicker_mode);
|
|
}
|
|
|
|
if (flicker_freq != FLICKER_50 && flicker_freq != FLICKER_60) {
|
|
flicker_freq = FLICKER_60;
|
|
LOG("Flicker mode specified is invalid, using %d\n",
|
|
flicker_freq);
|
|
}
|
|
|
|
if(video_nr < -1 || video_nr > 64) {
|
|
video_nr = -1;
|
|
LOG("invalid video_nr specified, must be -1 to 64\n");
|
|
}
|
|
|
|
DBG("Using %d buffers, each %d bytes, alternate=%d\n",
|
|
num_buffers, buffer_size, alternate);
|
|
}
|
|
|
|
/************ Module Stuff ***************/
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* cpia2_init/module_init
|
|
*
|
|
*****************************************************************************/
|
|
static int __init cpia2_init(void)
|
|
{
|
|
LOG("%s v%d.%d.%d\n",
|
|
ABOUT, CPIA2_MAJ_VER, CPIA2_MIN_VER, CPIA2_PATCH_VER);
|
|
check_parameters();
|
|
cpia2_usb_init();
|
|
return 0;
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
*
|
|
* cpia2_exit/module_exit
|
|
*
|
|
*****************************************************************************/
|
|
static void __exit cpia2_exit(void)
|
|
{
|
|
cpia2_usb_cleanup();
|
|
schedule_timeout(2 * HZ);
|
|
}
|
|
|
|
module_init(cpia2_init);
|
|
module_exit(cpia2_exit);
|
|
|