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video.c
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video.c
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/*
* video.c
*
* Video stream functions for motion.
* Copyright 2000 by Jeroen Vreeken ([email protected])
* This software is distributed under the GNU public license version 2
* See also the file 'COPYING'.
*
*/
/* Common stuff: */
#include "rotate.h" /* already includes motion.h */
#include "video.h"
#if defined(HAVE_LINUX_VIDEODEV_H) && !defined(WITHOUT_V4L)
/**
* v4l_picture_controls
*/
static void v4l_picture_controls(struct context *cnt, struct video_dev *viddev)
{
int dev = viddev->fd;
struct video_picture vid_pic;
int make_change = 0;
if (cnt->conf.contrast && cnt->conf.contrast != viddev->contrast) {
if (ioctl(dev, VIDIOCGPICT, &vid_pic) == -1)
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: ioctl (VIDIOCGPICT)");
make_change = 1;
vid_pic.contrast = cnt->conf.contrast * 256;
viddev->contrast = cnt->conf.contrast;
}
if (cnt->conf.saturation && cnt->conf.saturation != viddev->saturation) {
if (!make_change) {
if (ioctl(dev, VIDIOCGPICT, &vid_pic)==-1)
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: ioctl (VIDIOCGPICT)");
}
make_change = 1;
vid_pic.colour = cnt->conf.saturation * 256;
viddev->saturation = cnt->conf.saturation;
}
if (cnt->conf.hue && cnt->conf.hue != viddev->hue) {
if (!make_change) {
if (ioctl(dev, VIDIOCGPICT, &vid_pic) == -1)
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: ioctl (VIDIOCGPICT)");
}
make_change = 1;
vid_pic.hue = cnt->conf.hue * 256;
viddev->hue = cnt->conf.hue;
}
/* Only tested with PWCBSD in FreeBSD */
#if defined(PWCBSD)
if (cnt->conf.frame_limit != viddev->fps) {
struct video_window vw;
int fps;
if (ioctl(dev, VIDIOCGWIN, &vw) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: ioctl VIDIOCGWIN");
} else {
fps = vw.flags >> PWC_FPS_SHIFT;
MOTION_LOG(INF, TYPE_VIDEO, NO_ERRNO, "%s: Get Current framerate %d .. trying %d",
fps, cnt->conf.frame_limit);
}
fps = cnt->conf.frame_limit;
vw.flags = fps << PWC_FPS_SHIFT;
if (ioctl(dev, VIDIOCSWIN, &vw) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: ioctl VIDIOCSWIN");
} else if (ioctl(dev, VIDIOCGWIN, &vw) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: ioctl VIDIOCGWIN");
} else {
fps = vw.flags >> PWC_FPS_SHIFT;
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: Set new framerate %d", fps);
}
viddev->fps = fps;
}
#endif
if (cnt->conf.autobright) {
if (vid_do_autobright(cnt, viddev)) {
/* If we already read the VIDIOGPICT - we should not do it again. */
if (!make_change) {
if (ioctl(dev, VIDIOCGPICT, &vid_pic) == -1)
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: ioctl (VIDIOCGPICT)");
}
vid_pic.brightness = viddev->brightness * 256;
make_change = 1;
}
} else if (cnt->conf.brightness && cnt->conf.brightness != viddev->brightness) {
if ((!make_change) && (ioctl(dev, VIDIOCGPICT, &vid_pic) == -1))
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: ioctl (VIDIOCGPICT)");
make_change = 1;
vid_pic.brightness = cnt->conf.brightness * 256;
viddev->brightness = cnt->conf.brightness;
}
if (make_change) {
if (ioctl(dev, VIDIOCSPICT, &vid_pic) == -1)
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: ioctl (VIDIOCSPICT)");
}
}
/*******************************************************************************
Video4linux capture routines
********************************************************************************/
/**
* v4l_start
* Initialize video device to start capturing and allocates memory map
* for video device.
*
* Returns mmapped buffer for video device or NULL if any error happens.
*
*/
unsigned char *v4l_start(struct video_dev *viddev, int width, int height,int input,
int norm, unsigned long freq, int tuner_number)
{
int dev = viddev->fd;
struct video_capability vid_caps;
struct video_channel vid_chnl;
struct video_tuner vid_tuner;
struct video_mbuf vid_buf;
struct video_mmap vid_mmap;
void *map;
if (ioctl (dev, VIDIOCGCAP, &vid_caps) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: ioctl (VIDIOCGCAP)");
return NULL;
}
if (vid_caps.type & VID_TYPE_MONOCHROME)
viddev->v4l_fmt = VIDEO_PALETTE_GREY;
if (input != IN_DEFAULT) {
memset(&vid_chnl, 0, sizeof(struct video_channel));
vid_chnl.channel = input;
if (ioctl (dev, VIDIOCGCHAN, &vid_chnl) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: ioctl (VIDIOCGCHAN) Input %d",
input);
} else {
vid_chnl.channel = input;
vid_chnl.norm = norm;
if (ioctl (dev, VIDIOCSCHAN, &vid_chnl) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: ioctl (VIDIOCSCHAN) Input %d"
" Standard method %d", input, norm);
return NULL;
}
}
}
if (freq) {
memset(&vid_tuner, 0, sizeof(struct video_tuner));
vid_tuner.tuner = tuner_number;
if (ioctl (dev, VIDIOCGTUNER, &vid_tuner) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: ioctl (VIDIOCGTUNER) tuner %d",
tuner_number);
} else {
if (vid_tuner.flags & VIDEO_TUNER_LOW)
freq = freq * 16; /* steps of 1/16 KHz */
else
freq = freq * 10 / 625;
if (ioctl(dev, VIDIOCSFREQ, &freq) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: ioctl (VIDIOCSFREQ)"
" Frequency %ul", freq);
return NULL;
}
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: Set Tuner to %d Frequency set to %ul",
tuner_number, freq);
}
}
if (ioctl (dev, VIDIOCGMBUF, &vid_buf) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, NO_ERRNO, "%s: ioctl(VIDIOCGMBUF) - Error device"
" does not support memory map\n V4L capturing using read is deprecated!\n"
"Motion only supports mmap.");
return NULL;
} else {
map = mmap(0, vid_buf.size, PROT_READ|PROT_WRITE, MAP_SHARED, dev, 0);
viddev->size_map = vid_buf.size;
if (vid_buf.frames > 1) {
viddev->v4l_maxbuffer = 2;
viddev->v4l_buffers[0] = map;
viddev->v4l_buffers[1] = (unsigned char *)map + vid_buf.offsets[1];
} else {
viddev->v4l_buffers[0] = map;
viddev->v4l_maxbuffer = 1;
}
if (MAP_FAILED == map) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: MAP_FAILED");
return NULL;
}
viddev->v4l_curbuffer = 0;
vid_mmap.format = viddev->v4l_fmt;
vid_mmap.frame = viddev->v4l_curbuffer;
vid_mmap.width = width;
vid_mmap.height = height;
if (ioctl(dev, VIDIOCMCAPTURE, &vid_mmap) == -1) {
MOTION_LOG(WRN, TYPE_VIDEO, SHOW_ERRNO, "%s: Failed with YUV420P, "
"trying YUV422 palette");
viddev->v4l_fmt = VIDEO_PALETTE_YUV422;
vid_mmap.format = viddev->v4l_fmt;
/* Try again... */
if (ioctl(dev, VIDIOCMCAPTURE, &vid_mmap) == -1) {
MOTION_LOG(WRN, TYPE_VIDEO, SHOW_ERRNO, "%s: Failed with YUV422,"
" trying YUYV palette");
viddev->v4l_fmt = VIDEO_PALETTE_YUYV;
vid_mmap.format = viddev->v4l_fmt;
if (ioctl(dev, VIDIOCMCAPTURE, &vid_mmap) == -1) {
MOTION_LOG(WRN, TYPE_VIDEO, SHOW_ERRNO, "%s: Failed with YUYV, trying RGB24 palette");
viddev->v4l_fmt = VIDEO_PALETTE_RGB24;
vid_mmap.format = viddev->v4l_fmt;
/* Try again... */
if (ioctl(dev, VIDIOCMCAPTURE, &vid_mmap) == -1) {
MOTION_LOG(WRN, TYPE_VIDEO, SHOW_ERRNO, "%s: Failed with RGB24, trying"
"GREYSCALE palette");
viddev->v4l_fmt = VIDEO_PALETTE_GREY;
vid_mmap.format = viddev->v4l_fmt;
/* Try one last time... */
if (ioctl(dev, VIDIOCMCAPTURE, &vid_mmap) == -1) {
MOTION_LOG(CRT, TYPE_VIDEO, SHOW_ERRNO, "%s: Failed with all supported palettes "
"- giving up");
return NULL;
}
}
}
}
}
}
switch (viddev->v4l_fmt) {
case VIDEO_PALETTE_YUV420P:
viddev->v4l_bufsize = (width * height * 3) / 2;
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: Using VIDEO_PALETTE_YUV420P palette");
break;
case VIDEO_PALETTE_YUV422:
viddev->v4l_bufsize = (width * height * 2);
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: Using VIDEO_PALETTE_YUV422 palette");
break;
case VIDEO_PALETTE_YUYV:
viddev->v4l_bufsize = (width * height * 2);
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: Using VIDEO_PALETTE_YUYV palette");
break;
case VIDEO_PALETTE_RGB24:
viddev->v4l_bufsize = (width * height * 3);
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: Using VIDEO_PALETTE_RGB24 palette");
break;
case VIDEO_PALETTE_GREY:
viddev->v4l_bufsize = width * height;
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: Using VIDEO_PALETTE_GREY palette");
break;
}
return map;
}
/**
* v4l_next
* Fetches a video frame from a v4l device
*
* Parameters:
* viddev Pointer to struct containing video device handle amd device parameters
* map Pointer to the buffer in which the function puts the new image
* width Width of image in pixels
* height Height of image in pixels
*
* Returns
* 0 Success
* V4L_FATAL_ERROR Fatal error
* Positive with bit 0 set and bit 1 unset
* Non fatal error (not implemented)
*/
int v4l_next(struct video_dev *viddev, unsigned char *map, int width, int height)
{
int dev = viddev->fd;
int frame = viddev->v4l_curbuffer;
struct video_mmap vid_mmap;
unsigned char *cap_map;
sigset_t set, old;
/* MMAP method is used */
vid_mmap.format = viddev->v4l_fmt;
vid_mmap.width = width;
vid_mmap.height = height;
/* 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);
cap_map = viddev->v4l_buffers[viddev->v4l_curbuffer];
viddev->v4l_curbuffer++;
if (viddev->v4l_curbuffer >= viddev->v4l_maxbuffer)
viddev->v4l_curbuffer = 0;
vid_mmap.frame = viddev->v4l_curbuffer;
if (ioctl(dev, VIDIOCMCAPTURE, &vid_mmap) == -1) {
MOTION_LOG(ALR, TYPE_VIDEO, SHOW_ERRNO, "%s: mcapture error in proc %d",
getpid());
sigprocmask (SIG_UNBLOCK, &old, NULL);
return V4L_FATAL_ERROR;
}
vid_mmap.frame = frame;
if (ioctl(dev, VIDIOCSYNC, &vid_mmap.frame) == -1) {
MOTION_LOG(ALR, TYPE_VIDEO, SHOW_ERRNO, "%s: sync error in proc %d",
getpid());
sigprocmask (SIG_UNBLOCK, &old, NULL);
}
pthread_sigmask (SIG_UNBLOCK, &old, NULL); /*undo the signal blocking*/
switch (viddev->v4l_fmt) {
case VIDEO_PALETTE_RGB24:
conv_rgb24toyuv420p(map, cap_map, width, height);
break;
case VIDEO_PALETTE_YUYV:
case VIDEO_PALETTE_YUV422:
conv_yuv422to420p(map, cap_map, width, height);
break;
default:
memcpy(map, cap_map, viddev->v4l_bufsize);
}
return 0;
}
/**
* v4l_set_input
* Sets input for video device, adjust picture controls.
* If needed skip frames for round robin.
*
* Parameters:
* cnt Pointer to context struct
* viddev Pointer to struct containing video device handle amd device parameters
* map Pointer to the buffer in which the function puts the new image
* width Width of image in pixels
* height Height of image in pixels
* conf Pointer to config struct
*
* Returns nothing
*/
void v4l_set_input(struct context *cnt, struct video_dev *viddev, unsigned char *map,
int width, int height, struct config *conf)
{
int dev = viddev->fd;
struct video_channel vid_chnl;
struct video_tuner vid_tuner;
unsigned long frequnits , freq;
int input = conf->input;
int norm = conf->norm;
int tuner_number = conf->tuner_number;
frequnits = freq = conf->frequency;
if (input != viddev->input || width != viddev->width || height != viddev->height ||
freq != viddev->freq || tuner_number != viddev->tuner_number || norm != viddev->norm) {
unsigned int skip = conf->roundrobin_skip, i;
if (freq) {
memset(&vid_tuner, 0, sizeof(struct video_tuner));
vid_tuner.tuner = tuner_number;
if (ioctl (dev, VIDIOCGTUNER, &vid_tuner) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: ioctl (VIDIOCGTUNER) tuner number %d",
tuner_number);
} else {
if (vid_tuner.flags & VIDEO_TUNER_LOW)
frequnits = freq * 16; /* steps of 1/16 KHz */
else
frequnits = (freq * 10) / 625;
if (ioctl(dev, VIDIOCSFREQ, &frequnits) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: ioctl (VIDIOCSFREQ) Frequency %ul",
frequnits);
return;
}
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: Set Tuner to %d Frequency to %ul",
tuner_number, frequnits);
}
}
memset(&vid_chnl, 0, sizeof(struct video_channel));
vid_chnl.channel = input;
if (ioctl (dev, VIDIOCGCHAN, &vid_chnl) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: ioctl (VIDIOCGCHAN) Input %d",
input);
} else {
vid_chnl.channel = input;
vid_chnl.norm = norm;
if (ioctl (dev, VIDIOCSCHAN, &vid_chnl) == -1) {
MOTION_LOG(ERR, TYPE_VIDEO, SHOW_ERRNO, "%s: ioctl (VIDIOCSCHAN) Input %d"
" Standard method %d", input, norm);
return;
}
MOTION_LOG(NTC, TYPE_VIDEO, NO_ERRNO, "%s: Set Input to %d Standard method to %d",
input, norm);
}
v4l_picture_controls(cnt, viddev);
conf->input = viddev->input = input;
conf->width = viddev->width = width;
conf->height = viddev->height = height;
conf->frequency = viddev->freq = freq;
conf->tuner_number = viddev->tuner_number = tuner_number;
conf->norm = viddev->norm = norm;
/* skip a few frames if needed */
for (i = 0; i < skip; i++)
v4l_next(viddev, map, width, height);
} else {
/* No round robin - we only adjust picture controls */
v4l_picture_controls(cnt, viddev);
}
}
#endif /* !WITHOUT_V4L */