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video2.c
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/*
* video2.c
*
* V4L2 interface with basically JPEG decompression support and even more ...
* Copyright 2006 Krzysztof Blaszkowski ([email protected])
* 2007 Angel Carpintero ([email protected])
* Supported features and TODO
- preferred palette is JPEG which seems to be very popular for many 640x480 usb cams
- other supported palettes (NOT TESTED)
V4L2_PIX_FMT_SN9C10X (sonix)
V4L2_PIX_FMT_SBGGR16,
V4L2_PIX_FMT_SBGGR8, (sonix)
V4L2_PIX_FMT_SPCA561,
V4L2_PIX_FMT_SGBRG8,
V4L2_PIX_FMT_SGRBG8,
V4L2_PIX_FMT_PAC207,
V4L2_PIX_FMT_PJPG,
V4L2_PIX_FMT_MJPEG, (tested)
V4L2_PIX_FMT_JPEG, (tested)
V4L2_PIX_FMT_RGB24,
V4L2_PIX_FMT_SPCA501,
V4L2_PIX_FMT_SPCA505,
V4L2_PIX_FMT_SPCA508,
V4L2_PIX_FMT_UYVY, (tested)
V4L2_PIX_FMT_YUV422P,
V4L2_PIX_FMT_YUV420, (tested)
V4L2_PIX_FMT_YUYV (tested)
* - setting tuner - NOT TESTED
* - access to V4L2 device controls is missing. Partially added but requires some improvements likely.
* - changing resolution at run-time may not work.
* - ucvideo svn r75 or above to work with MJPEG ( e.g. Logitech 5000 pro )
* This work is inspired by fswebcam and current design of motion.
* This interface has been tested with ZC0301 driver from kernel 2.6.17.3 and Labtec's usb camera (PAS202 sensor)
* I'm very pleased by achieved image quality and cpu usage comparing to junky v4l1 spca5xx driver with
* it nonsensical kernel messy jpeg decompressor.
* Default sensor settings used by ZC0301 driver are very reasonable choosen.
* apparently brigthness should be controlled automatically by motion still for light compensation.
* it can be done by adjusting ADC gain and also exposure time.
* Kernel 2.6.27
V4L2_PIX_FMT_SPCA501 v4l2_fourcc('S', '5', '0', '1') YUYV per line
V4L2_PIX_FMT_SPCA505 v4l2_fourcc('S', '5', '0', '5') YYUV per line
V4L2_PIX_FMT_SPCA508 v4l2_fourcc('S', '5', '0', '8') YUVY per line
V4L2_PIX_FMT_SGBRG8 v4l2_fourcc('G', 'B', 'R', 'G') 8 GBGB.. RGRG..
V4L2_PIX_FMT_SGRBG8 v4l2_fourcc('G', 'R', 'B', 'G') 8 GRGR.. BGBG..
V4L2_PIX_FMT_SBGGR16 v4l2_fourcc('B', 'Y', 'R', '2') 16 BGBG.. GRGR..
V4L2_PIX_FMT_SPCA561 v4l2_fourcc('S', '5', '6', '1') compressed GBRG bayer
V4L2_PIX_FMT_PJPG v4l2_fourcc('P', 'J', 'P', 'G') Pixart 73xx JPEG
V4L2_PIX_FMT_PAC207 v4l2_fourcc('P', '2', '0', '7') compressed BGGR bayer
*
* 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.
let's go :)
*/
#if !defined(WITHOUT_V4L) && defined(MOTION_V4L2)
#include "motion.h"
#include "video.h"
#ifdef MOTION_V4L2_OLD
// Seems that is needed for some system
#include <linux/time.h>
#include <linux/videodev2.h>
#endif
#define u8 unsigned char
#define u16 unsigned short
#define u32 unsigned int
#define s32 signed int
#define MMAP_BUFFERS 4
#define MIN_MMAP_BUFFERS 2
#ifndef V4L2_PIX_FMT_SBGGR8
/* see http://www.siliconimaging.com/RGB%20Bayer.htm */
#define V4L2_PIX_FMT_SBGGR8 v4l2_fourcc('B','A','8','1') /* 8 BGBG.. GRGR.. */
#endif
#ifndef V4L2_PIX_FMT_MJPEG
#define V4L2_PIX_FMT_MJPEG v4l2_fourcc('M','J','P','G') /* Motion-JPEG */
#endif
#ifndef V4L2_PIX_FMT_SN9C10X
#define V4L2_PIX_FMT_SN9C10X v4l2_fourcc('S','9','1','0') /* SN9C10x compression */
#endif
#ifndef V4L2_PIX_FMT_SGBRG8
#define V4L2_PIX_FMT_SGBRG8 v4l2_fourcc('G', 'B', 'R', 'G') /* 8 GBGB.. RGRG.. */
#endif
#ifndef V4L2_PIX_FMT_SGRBG8
#define V4L2_PIX_FMT_SGRBG8 v4l2_fourcc('G', 'R', 'B', 'G') /* 8 GRGR.. BGBG.. */
#endif
#ifndef V4L2_PIX_FMT_SBGGR16
#define V4L2_PIX_FMT_SBGGR16 v4l2_fourcc('B', 'Y', 'R', '2') /* 16 BGBG.. GRGR.. */
#endif
#ifndef V4L2_PIX_FMT_SPCA561
#define V4L2_PIX_FMT_SPCA561 v4l2_fourcc('S', '5', '6', '1') /* compressed GBRG bayer */
#endif
#ifndef V4L2_PIX_FMT_PJPG
#define V4L2_PIX_FMT_PJPG v4l2_fourcc('P', 'J', 'P', 'G') /* Pixart 73xx JPEG */
#endif
#ifndef V4L2_PIX_FMT_PAC207
#define V4L2_PIX_FMT_PAC207 v4l2_fourcc('P', '2', '0', '7') /* compressed BGGR bayer */
#endif
#ifndef V4L2_PIX_FMT_SPCA501
#define V4L2_PIX_FMT_SPCA501 v4l2_fourcc('S', '5', '0', '1') /* YUYV per line */
#endif
#ifndef V4L2_PIX_FMT_SPCA505
#define V4L2_PIX_FMT_SPCA505 v4l2_fourcc('S', '5', '0', '5') /* YYUV per line */
#endif
#ifndef V4L2_PIX_FMT_SPCA508
#define V4L2_PIX_FMT_SPCA508 v4l2_fourcc('S', '5', '0', '8') /* YUVY per line */
#endif
#define ZC301_V4L2_CID_DAC_MAGN V4L2_CID_PRIVATE_BASE
#define ZC301_V4L2_CID_GREEN_BALANCE (V4L2_CID_PRIVATE_BASE+1)
static const u32 queried_ctrls[] = {
V4L2_CID_BRIGHTNESS,
V4L2_CID_CONTRAST,
V4L2_CID_SATURATION,
V4L2_CID_HUE,
V4L2_CID_RED_BALANCE,
V4L2_CID_BLUE_BALANCE,
V4L2_CID_GAMMA,
V4L2_CID_EXPOSURE,
V4L2_CID_AUTOGAIN,
V4L2_CID_GAIN,
ZC301_V4L2_CID_DAC_MAGN,
ZC301_V4L2_CID_GREEN_BALANCE,
0
};
typedef struct {
int fd;
u32 fps;
struct v4l2_capability cap;
struct v4l2_format src_fmt;
struct v4l2_format dst_fmt;
struct v4l2_requestbuffers req;
struct v4l2_buffer buf;
video_buff *buffers;
s32 pframe;
u32 ctrl_flags;
struct v4l2_queryctrl *controls;
} src_v4l2_t;
/**
* xioctl
*/
static int xioctl(int fd, int request, void *arg)
{
int ret;
do
ret = ioctl(fd, request, arg);
while (-1 == ret && EINTR == errno);
return ret;
}
/**
* v4l2_get_capability
*/
static int v4l2_get_capability(src_v4l2_t * vid_source)
{
if (xioctl(vid_source->fd, VIDIOC_QUERYCAP, &vid_source->cap) < 0) {
MOTION_LOG(ERR, TYPE_VIDEO, NO_ERRNO, "%s: Not a V4L2 device?");
return -1;
}
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: \n------------------------\n"
"cap.driver: \"%s\"\n"
"cap.card: \"%s\"\n"
"cap.bus_info: \"%s\"\n"
"cap.capabilities=0x%08X\n------------------------",
vid_source->cap.driver, vid_source->cap.card, vid_source->cap.bus_info,
vid_source->cap.capabilities);
if (vid_source->cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: - VIDEO_CAPTURE");
if (vid_source->cap.capabilities & V4L2_CAP_VIDEO_OUTPUT)
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: - VIDEO_OUTPUT");
if (vid_source->cap.capabilities & V4L2_CAP_VIDEO_OVERLAY)
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: - VIDEO_OVERLAY");
if (vid_source->cap.capabilities & V4L2_CAP_VBI_CAPTURE)
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: - VBI_CAPTURE");
if (vid_source->cap.capabilities & V4L2_CAP_VBI_OUTPUT)
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: - VBI_OUTPUT");
if (vid_source->cap.capabilities & V4L2_CAP_RDS_CAPTURE)
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: - RDS_CAPTURE");
if (vid_source->cap.capabilities & V4L2_CAP_TUNER)
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: - TUNER");
if (vid_source->cap.capabilities & V4L2_CAP_AUDIO)
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: - AUDIO");
if (vid_source->cap.capabilities & V4L2_CAP_READWRITE)
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: - READWRITE");
if (vid_source->cap.capabilities & V4L2_CAP_ASYNCIO)
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: - ASYNCIO");
if (vid_source->cap.capabilities & V4L2_CAP_STREAMING)
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: - STREAMING");
if (vid_source->cap.capabilities & V4L2_CAP_TIMEPERFRAME)
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: - TIMEPERFRAME");
if (!(vid_source->cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)) {
MOTION_LOG(ERR, TYPE_VIDEO, NO_ERRNO, "%s: Device does not support capturing.");
return -1;
}
return 0;
}
/**
* v4l2_select_input
*/
static int v4l2_select_input(struct config *conf, struct video_dev *viddev,
src_v4l2_t * vid_source, int in, int norm,
unsigned long freq_, int tuner_number ATTRIBUTE_UNUSED)
{
struct v4l2_input input;
struct v4l2_standard standard;
v4l2_std_id std_id;
/* Set the input. */
memset(&input, 0, sizeof (input));
if (in == IN_DEFAULT)
input.index = IN_TV;
else input.index = in;
if (xioctl(vid_source->fd, VIDIOC_ENUMINPUT, &input) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: Unable to query input %d."
" VIDIOC_ENUMINPUT, if you use a WEBCAM change input value in conf by -1",
input.index);
return -1;
}
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: name = \"%s\", type 0x%08X,"
" status %08x", input.name, input.type, input.status);
if (input.type & V4L2_INPUT_TYPE_TUNER)
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: - TUNER");
if (input.type & V4L2_INPUT_TYPE_CAMERA)
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: - CAMERA");
if (xioctl(vid_source->fd, VIDIOC_S_INPUT, &input.index) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: Error selecting input %d"
" VIDIOC_S_INPUT", input.index);
return -1;
}
viddev->input = conf->input = in;
/*
* Set video standard usually webcams doesn't support the ioctl or
* return V4L2_STD_UNKNOWN
*/
if (xioctl(vid_source->fd, VIDIOC_G_STD, &std_id) == -1) {
MOTION_LOG(WRN, TYPE_VIDEO, NO_ERRNO, "%s: Device doesn't support VIDIOC_G_STD");
norm = std_id = 0; // V4L2_STD_UNKNOWN = 0
}
if (std_id) {
memset(&standard, 0, sizeof(standard));
standard.index = 0;
while (xioctl(vid_source->fd, VIDIOC_ENUMSTD, &standard) == 0) {
if (standard.id & std_id)
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: - video standard %s",
standard.name);
standard.index++;
}
switch (norm) {
case 1:
std_id = V4L2_STD_NTSC;
break;
case 2:
std_id = V4L2_STD_SECAM;
break;
default:
std_id = V4L2_STD_PAL;
}
if (xioctl(vid_source->fd, VIDIOC_S_STD, &std_id) == -1)
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: Error selecting standard"
" method %d VIDIOC_S_STD", (int)std_id);
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: Set standard method %d",
(int)std_id);
}
viddev->norm = conf->norm = norm;
/* If this input is attached to a tuner, set the frequency. */
if (input.type & V4L2_INPUT_TYPE_TUNER) {
struct v4l2_tuner tuner;
struct v4l2_frequency freq;
/* Query the tuners capabilities. */
memset(&tuner, 0, sizeof(struct v4l2_tuner));
tuner.index = input.tuner;
if (xioctl(vid_source->fd, VIDIOC_G_TUNER, &tuner) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: tuner %d VIDIOC_G_TUNER",
tuner.index);
return 0;
}
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: Set tuner %d",
tuner.index);
/* Set the frequency. */
memset(&freq, 0, sizeof(struct v4l2_frequency));
freq.tuner = input.tuner;
freq.type = V4L2_TUNER_ANALOG_TV;
freq.frequency = (freq_ / 1000) * 16;
if (xioctl(vid_source->fd, VIDIOC_S_FREQUENCY, &freq) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: freq %ul VIDIOC_S_FREQUENCY",
freq.frequency);
return 0;
}
viddev->freq = conf->frequency = freq_;
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: Set Frequency to %ul",
freq.frequency);
} else {
viddev->freq = conf->frequency = 0;
}
return 0;
}
/* *
* v4l2_do_set_pix_format
*
* This routine does the actual request to the driver
*
* Returns: 0 Ok
* -1 Problems setting palette or not supported
*
* Our algorithm for setting the picture format for the data which the
* driver returns to us will be as follows:
*
* First, we request that the format be set to whatever is in the config
* file (which is either the motion default, or a value chosen by the user).
* If that request is successful, we are finished.
*
* If the driver responds that our request is not accepted, we then enumerate
* the formats which the driver claims to be able to supply. From this list,
* we choose whichever format is "most efficient" for motion. The enumerated
* list is also printed to the motion log so that the user can consider
* choosing a different value for the config file.
*
* We then request the driver to set the format we have chosen. That request
* should never fail, so if it does we log the fact and give up.
*/
static int v4l2_do_set_pix_format(u32 pixformat, src_v4l2_t * vid_source,
int *width, int *height)
{
CLEAR(vid_source->dst_fmt);
vid_source->dst_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
vid_source->dst_fmt.fmt.pix.width = *width;
vid_source->dst_fmt.fmt.pix.height = *height;
vid_source->dst_fmt.fmt.pix.pixelformat = pixformat;
vid_source->dst_fmt.fmt.pix.field = V4L2_FIELD_ANY;
if (xioctl(vid_source->fd, VIDIOC_TRY_FMT, &vid_source->dst_fmt) != -1 &&
vid_source->dst_fmt.fmt.pix.pixelformat == pixformat) {
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: Testing palette %c%c%c%c (%dx%d)",
pixformat >> 0, pixformat >> 8,
pixformat >> 16, pixformat >> 24, *width, *height);
if (vid_source->dst_fmt.fmt.pix.width != (unsigned int) *width ||
vid_source->dst_fmt.fmt.pix.height != (unsigned int) *height) {
MOTION_LOG(WRN, TYPE_VIDEO, NO_ERRNO, "%s: Adjusting resolution "
"from %ix%i to %ix%i.",
*width, *height, vid_source->dst_fmt.fmt.pix.width,
vid_source->dst_fmt.fmt.pix.height);
*width = vid_source->dst_fmt.fmt.pix.width;
*height = vid_source->dst_fmt.fmt.pix.height;
}
if (xioctl(vid_source->fd, VIDIOC_S_FMT, &vid_source->dst_fmt) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: Error setting pixel "
"format.\nVIDIOC_S_FMT: ");
return -1;
}
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: Using palette %c%c%c%c (%dx%d)"
" bytesperlines %d sizeimage %d colorspace %08x", pixformat >> 0,
pixformat >> 8, pixformat >> 16, pixformat >> 24, *width,
*height, vid_source->dst_fmt.fmt.pix.bytesperline,
vid_source->dst_fmt.fmt.pix.sizeimage,
vid_source->dst_fmt.fmt.pix.colorspace);
return 0;
}
return -1;
}
/**
* v4l2_set_pix_format
*
* Returns: 0 Ok
* -1 Problems setting palette or not supported
*/
static int v4l2_set_pix_format(struct context *cnt, src_v4l2_t * vid_source,
int *width, int *height)
{
struct v4l2_fmtdesc fmtd;
int v4l2_pal;
/*
* Note that this array MUST exactly match the config file list.
* A higher index means better chance to be used
*/
static const u32 supported_formats[] = {
V4L2_PIX_FMT_SN9C10X,
V4L2_PIX_FMT_SBGGR16,
V4L2_PIX_FMT_SBGGR8,
V4L2_PIX_FMT_SPCA561,
V4L2_PIX_FMT_SGBRG8,
V4L2_PIX_FMT_SGRBG8,
V4L2_PIX_FMT_PAC207,
V4L2_PIX_FMT_PJPG,
V4L2_PIX_FMT_MJPEG,
V4L2_PIX_FMT_JPEG,
V4L2_PIX_FMT_RGB24,
V4L2_PIX_FMT_SPCA501,
V4L2_PIX_FMT_SPCA505,
V4L2_PIX_FMT_SPCA508,
V4L2_PIX_FMT_UYVY,
V4L2_PIX_FMT_YUYV,
V4L2_PIX_FMT_YUV422P,
V4L2_PIX_FMT_YUV420 /* most efficient for motion */
};
int array_size = sizeof(supported_formats) / sizeof(supported_formats[0]);
int index_format = -1; /* -1 says not yet chosen */
CLEAR(fmtd);
fmtd.index = v4l2_pal = 0;
fmtd.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
/* First we try a shortcut of just setting the config file value */
if (cnt->conf.v4l2_palette >= 0) {
char name[5] = {supported_formats[cnt->conf.v4l2_palette] >> 0,
supported_formats[cnt->conf.v4l2_palette] >> 8,
supported_formats[cnt->conf.v4l2_palette] >> 16,
supported_formats[cnt->conf.v4l2_palette] >> 24, 0};
if (v4l2_do_set_pix_format(supported_formats[cnt->conf.v4l2_palette],
vid_source, width, height) >= 0)
return 0;
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: Config palette index %d (%s)"
" doesn't work.", cnt->conf.v4l2_palette, name);
}
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: Supported palettes:");
while (xioctl(vid_source->fd, VIDIOC_ENUM_FMT, &fmtd) != -1) {
int i;
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: (%i) %c%c%c%c (%s)",
v4l2_pal, fmtd.pixelformat >> 0,
fmtd.pixelformat >> 8, fmtd.pixelformat >> 16,
fmtd.pixelformat >> 24, fmtd.description);
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: %d - %s (compressed : %d) (%#x)",
fmtd.index, fmtd.description, fmtd.flags, fmtd.pixelformat);
/* Adjust index_format if larger value found */
for (i = index_format + 1; i < array_size; i++)
if (supported_formats[i] == fmtd.pixelformat)
index_format = i;
CLEAR(fmtd);
fmtd.index = ++v4l2_pal;
fmtd.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
}
if (index_format >= 0) {
char name[5] = {supported_formats[index_format] >> 0,
supported_formats[index_format] >> 8,
supported_formats[index_format] >> 16,
supported_formats[index_format] >> 24, 0};
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s Selected palette %s", name);
if (v4l2_do_set_pix_format(supported_formats[index_format],
vid_source, width, height) >= 0)
return 0;
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "VIDIOC_TRY_FMT failed for "
"format %s", name);
}
MOTION_LOG(ERR, TYPE_VIDEO, NO_ERRNO, "%s: Unable to find a compatible"
" palette format.");
return -1;
}
#if 0
static void v4l2_set_fps(src_v4l2_t * vid_source) {
struct v4l2_streamparm* setfps;
setfps = (struct v4l2_streamparm *) calloc(1, sizeof(struct v4l2_streamparm));
memset(setfps, 0, sizeof(struct v4l2_streamparm));
setfpvid_source->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
setfpvid_source->parm.capture.timeperframe.numerator = 1;
setfpvid_source->parm.capture.timeperframe.denominator = vid_source->fps;
if (xioctl(vid_source->fd, VIDIOC_S_PARM, setfps) == -1)
MOTION_LOG(ERR, 1, "%s: v4l2_set_fps VIDIOC_S_PARM");
}
#endif
/**
* v4l2_set_mmap
*/
static int v4l2_set_mmap(src_v4l2_t * vid_source)
{
enum v4l2_buf_type type;
u32 buffer_index;
/* Does the device support streaming? */
if (!(vid_source->cap.capabilities & V4L2_CAP_STREAMING))
return -1;
memset(&vid_source->req, 0, sizeof(struct v4l2_requestbuffers));
vid_source->req.count = MMAP_BUFFERS;
vid_source->req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
vid_source->req.memory = V4L2_MEMORY_MMAP;
if (xioctl(vid_source->fd, VIDIOC_REQBUFS, &vid_source->req) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: Error requesting buffers"
" %d for memory map. VIDIOC_REQBUFS",
vid_source->req.count);
return -1;
}
MOTION_LOG(DBG, TYPE_VIDEO, NO_ERRNO, "%s: mmap information: frames=%d",
vid_source->req.count);
if (vid_source->req.count < MIN_MMAP_BUFFERS) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: Insufficient buffer memory"
" %d < MIN_MMAP_BUFFERS.", vid_source->req.count);
return -1;
}
vid_source->buffers = calloc(vid_source->req.count, sizeof(video_buff));
if (!vid_source->buffers) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: Out of memory.");
return -1;
}
for (buffer_index = 0; buffer_index < vid_source->req.count; buffer_index++) {
struct v4l2_buffer buf;
memset(&buf, 0, sizeof(struct v4l2_buffer));
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = buffer_index;
if (xioctl(vid_source->fd, VIDIOC_QUERYBUF, &buf) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: Error querying buffer"
" %i\nVIDIOC_QUERYBUF: ", buffer_index);
free(vid_source->buffers);
return -1;
}
vid_source->buffers[buffer_index].size = buf.length;
vid_source->buffers[buffer_index].ptr = mmap(NULL, buf.length, PROT_READ | PROT_WRITE,
MAP_SHARED, vid_source->fd, buf.m.offset);
if (vid_source->buffers[buffer_index].ptr == MAP_FAILED) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: Error mapping buffer %i mmap",
buffer_index);
free(vid_source->buffers);
return -1;
}
MOTION_LOG(DBG, TYPE_VIDEO, NO_ERRNO, "%s: %i length=%d Address (%x)",
buffer_index, buf.length, vid_source->buffers[buffer_index].ptr);
}
for (buffer_index = 0; buffer_index < vid_source->req.count; buffer_index++) {
memset(&vid_source->buf, 0, sizeof(struct v4l2_buffer));
vid_source->buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
vid_source->buf.memory = V4L2_MEMORY_MMAP;
vid_source->buf.index = buffer_index;
if (xioctl(vid_source->fd, VIDIOC_QBUF, &vid_source->buf) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: VIDIOC_QBUF");
return -1;
}
}
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (xioctl(vid_source->fd, VIDIOC_STREAMON, &type) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: Error starting stream."
" VIDIOC_STREAMON");
return -1;
}
return 0;
}
/**
* v4l2_scan_controls
*/
static int v4l2_scan_controls(src_v4l2_t * vid_source)
{
int count, i;
struct v4l2_queryctrl queryctrl;
memset(&queryctrl, 0, sizeof(struct v4l2_queryctrl));
for (i = 0, count = 0; queried_ctrls[i]; i++) {
queryctrl.id = queried_ctrls[i];
if (xioctl(vid_source->fd, VIDIOC_QUERYCTRL, &queryctrl))
continue;
count++;
vid_source->ctrl_flags |= 1 << i;
}
if (count) {
struct v4l2_queryctrl *ctrl = vid_source->controls
= calloc(count, sizeof(struct v4l2_queryctrl));
if (!ctrl) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: Insufficient buffer memory.");
return -1;
}
for (i = 0; queried_ctrls[i]; i++) {
if (vid_source->ctrl_flags & (1 << i)) {
struct v4l2_control control;
queryctrl.id = queried_ctrls[i];
if (xioctl(vid_source->fd, VIDIOC_QUERYCTRL, &queryctrl))
continue;
memcpy(ctrl, &queryctrl, sizeof(struct v4l2_queryctrl));
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: found control 0x%08x, \"%s\","
" range %d,%d %s",
ctrl->id, ctrl->name, ctrl->minimum, ctrl->maximum,
ctrl->flags & V4L2_CTRL_FLAG_DISABLED ? "!DISABLED!" : "");
memset(&control, 0, sizeof (control));
control.id = queried_ctrls[i];
xioctl(vid_source->fd, VIDIOC_G_CTRL, &control);
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: \t\"%s\", default %d, current %d",
ctrl->name, ctrl->default_value, control.value);
ctrl++;
}
}
}
return 0;
}
/**
* v4l2_set_control
*/
static int v4l2_set_control(src_v4l2_t * vid_source, u32 cid, int value)
{
int i, count;
if (!vid_source->controls)
return -1;
for (i = 0, count = 0; queried_ctrls[i]; i++) {
if (vid_source->ctrl_flags & (1 << i)) {
if (cid == queried_ctrls[i]) {
struct v4l2_queryctrl *ctrl = vid_source->controls + count;
struct v4l2_control control;
int ret;
memset(&control, 0, sizeof (control));
control.id = queried_ctrls[i];
switch (ctrl->type) {
case V4L2_CTRL_TYPE_INTEGER:
value = control.value =
(value * (ctrl->maximum - ctrl->minimum) / 256) + ctrl->minimum;
ret = xioctl(vid_source->fd, VIDIOC_S_CTRL, &control);
break;
case V4L2_CTRL_TYPE_BOOLEAN:
value = control.value = value ? 1 : 0;
ret = xioctl(vid_source->fd, VIDIOC_S_CTRL, &control);
break;
default:
MOTION_LOG(WRN, TYPE_VIDEO, NO_ERRNO, "%s: control type not supported yet");
return -1;
}
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: setting control \"%s\" to %d"
" (ret %d %s) %s", ctrl->name, value, ret, ret ? strerror(errno) : "",
ctrl->flags & V4L2_CTRL_FLAG_DISABLED ? "Control is DISABLED!" : "");
return 0;
}
count++;
}
}
return -1;
}
/**
* v4l2_picture_controls
*/
static void v4l2_picture_controls(struct context *cnt, struct video_dev *viddev)
{
src_v4l2_t *vid_source = (src_v4l2_t *) viddev->v4l2_private;
if (cnt->conf.contrast && cnt->conf.contrast != viddev->contrast) {
viddev->contrast = cnt->conf.contrast;
v4l2_set_control(vid_source, V4L2_CID_CONTRAST, viddev->contrast);
}
if (cnt->conf.saturation && cnt->conf.saturation != viddev->saturation) {
viddev->saturation = cnt->conf.saturation;
v4l2_set_control(vid_source, V4L2_CID_SATURATION, viddev->saturation);
}
if (cnt->conf.hue && cnt->conf.hue != viddev->hue) {
viddev->hue = cnt->conf.hue;
v4l2_set_control(vid_source, V4L2_CID_HUE, viddev->hue);
}
if (cnt->conf.autobright) {
if (vid_do_autobright(cnt, viddev)) {
if (v4l2_set_control(vid_source, V4L2_CID_BRIGHTNESS, viddev->brightness))
v4l2_set_control(vid_source, V4L2_CID_GAIN, viddev->brightness);
}
} else {
if (cnt->conf.brightness && cnt->conf.brightness != viddev->brightness) {
viddev->brightness = cnt->conf.brightness;
if (v4l2_set_control(vid_source, V4L2_CID_BRIGHTNESS, viddev->brightness))
v4l2_set_control(vid_source, V4L2_CID_GAIN, viddev->brightness);
}
}
}
/* public functions */
/**
* v4l2_start
*/
unsigned char *v4l2_start(struct context *cnt, struct video_dev *viddev, int width, int height,
int input, int norm, unsigned long freq, int tuner_number)
{
src_v4l2_t *vid_source;
/* Allocate memory for the state structure. */
if (!(vid_source = calloc(sizeof(src_v4l2_t), 1))) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: Out of memory.");
goto err;
}
viddev->v4l2_private = vid_source;
vid_source->fd = viddev->fd;
vid_source->fps = cnt->conf.frame_limit;
vid_source->pframe = -1;
struct config *conf = &cnt->conf;
if (v4l2_get_capability(vid_source))
goto err;
if (v4l2_select_input(conf, viddev, vid_source, input, norm, freq, tuner_number))
goto err;
if (v4l2_set_pix_format(cnt, vid_source, &width, &height))
goto err;
if (v4l2_scan_controls(vid_source))
goto err;
#if 0
v4l2_set_fps(vid_source);
#endif
if (v4l2_set_mmap(vid_source))
goto err;
viddev->size_map = 0;
viddev->v4l_buffers[0] = NULL;
viddev->v4l_maxbuffer = 1;
viddev->v4l_curbuffer = 0;
viddev->v4l_fmt = VIDEO_PALETTE_YUV420P;
viddev->v4l_bufsize = (width * height * 3) / 2;
/* Update width and height with supported values from camera driver */
viddev->width = width;
viddev->height = height;
return (void *) 1;
err:
free(vid_source);
viddev->v4l2_private = NULL;
viddev->v4l2 = 0;
return NULL;
}
/**
* v4l2_set_input
*/
void v4l2_set_input(struct context *cnt, struct video_dev *viddev, unsigned char *map,
int width, int height, struct config *conf)
{
int input = conf->input;
int norm = conf->norm;
unsigned long freq = conf->frequency;
int tuner_number = conf->tuner_number;
if (input != viddev->input || width != viddev->width || height != viddev->height ||
freq != viddev->freq || tuner_number != viddev->tuner_number || norm != viddev->norm) {
unsigned int i;
struct timeval switchTime;
unsigned int skip = conf->roundrobin_skip;
if (conf->roundrobin_skip < 0)
skip = 1;
v4l2_select_input(conf, viddev, (src_v4l2_t *) viddev->v4l2_private,
input, norm, freq, tuner_number);
gettimeofday(&switchTime, NULL);
v4l2_picture_controls(cnt, viddev);
viddev->width = width;
viddev->height = height;
/*
viddev->input = input;
viddev->norm = norm;
viddev->width = width;
viddev->height = height;
viddev->freq = freq;
viddev->tuner_number = tuner_number;
*/
/* Skip all frames captured before switchtime, capture 1 after switchtime */
{
src_v4l2_t *vid_source = (src_v4l2_t *) viddev->v4l2_private;
unsigned int counter = 0;
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: set_input_skip_frame "
"switch_time=%ld:%ld", switchTime.tv_sec, switchTime.tv_usec);
/* Avoid hang using the number of mmap buffers */
while(counter < vid_source->req.count) {
counter++;
if (v4l2_next(cnt, viddev, map, width, height))
break;
if (vid_source->buf.timestamp.tv_sec > switchTime.tv_sec ||
(vid_source->buf.timestamp.tv_sec == switchTime.tv_sec &&
vid_source->buf.timestamp.tv_usec > switchTime.tv_usec))
break;
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: got frame before "
" switch timestamp=%ld:%ld",
vid_source->buf.timestamp.tv_sec,
vid_source->buf.timestamp.tv_usec);
}
}
/* skip a few frames if needed */
for (i = 1; i < skip; i++)
v4l2_next(cnt, viddev, map, width, height);
} else {
/* No round robin - we only adjust picture controls */
v4l2_picture_controls(cnt, viddev);
}
}
/**
* v4l2_next
*/
int v4l2_next(struct context *cnt, struct video_dev *viddev, unsigned char *map,
int width, int height)
{
sigset_t set, old;
src_v4l2_t *vid_source = (src_v4l2_t *) viddev->v4l2_private;
if (viddev->v4l_fmt != VIDEO_PALETTE_YUV420P)
return V4L_FATAL_ERROR;
/* Block signals during IOCTL */
sigemptyset(&set);
sigaddset(&set, SIGCHLD);
sigaddset(&set, SIGALRM);
sigaddset(&set, SIGUSR1);
sigaddset(&set, SIGTERM);
sigaddset(&set, SIGHUP);
pthread_sigmask(SIG_BLOCK, &set, &old);
MOTION_LOG(DBG, TYPE_VIDEO, NO_ERRNO, "%s: 1) vid_source->pframe %i",
vid_source->pframe);
if (vid_source->pframe >= 0) {
if (xioctl(vid_source->fd, VIDIOC_QBUF, &vid_source->buf) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: VIDIOC_QBUF");
pthread_sigmask(SIG_UNBLOCK, &old, NULL);
return -1;
}
}
memset(&vid_source->buf, 0, sizeof(struct v4l2_buffer));
vid_source->buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
vid_source->buf.memory = V4L2_MEMORY_MMAP;
if (xioctl(vid_source->fd, VIDIOC_DQBUF, &vid_source->buf) == -1) {
int ret;
/*
* Some drivers return EIO when there is no signal,
* driver might dequeue an (empty) buffer despite
* returning an error, or even stop capturing.
*/
if (errno == EIO) {
vid_source->pframe++;
if ((u32)vid_source->pframe >= vid_source->req.count)
vid_source->pframe = 0;
vid_source->buf.index = vid_source->pframe;
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: VIDIOC_DQBUF: EIO "
"(vid_source->pframe %d)", vid_source->pframe);
ret = 1;
} else if (errno == EAGAIN) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: VIDIOC_DQBUF: EAGAIN"
" (vid_source->pframe %d)", vid_source->pframe);
ret = 1;
} else {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: VIDIOC_DQBUF");
ret = -1;
}