mirror of https://git.ffmpeg.org/ffmpeg.git
libdc1394: choose best video mode and rate based on camera capabilities.
This commit is contained in:
Martin Lambers
Michael Niedermayer
parent
ea7e318fb2
commit
b8773e44d5
|
|
@ -2,6 +2,7 @@
|
|||
* IIDC1394 grab interface (uses libdc1394 and libraw1394)
|
||||
* Copyright (c) 2004 Roman Shaposhnik
|
||||
* Copyright (c) 2008 Alessandro Sappia
|
||||
* Copyright (c) 2011 Martin Lambers
|
||||
*
|
||||
* This file is part of FFmpeg.
|
||||
*
|
||||
|
|
@ -25,6 +26,9 @@
|
|||
#include "libavutil/opt.h"
|
||||
#include "avdevice.h"
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
#include <dc1394/dc1394.h>
|
||||
|
||||
#undef free
|
||||
|
|
@ -40,16 +44,21 @@ typedef struct dc1394_data {
|
|||
AVPacket packet;
|
||||
} dc1394_data;
|
||||
|
||||
struct dc1394_frame_format {
|
||||
int width;
|
||||
int height;
|
||||
enum PixelFormat pix_fmt;
|
||||
int frame_size_id;
|
||||
} dc1394_frame_formats[] = {
|
||||
{ 320, 240, PIX_FMT_UYVY422, DC1394_VIDEO_MODE_320x240_YUV422 },
|
||||
{ 640, 480, PIX_FMT_UYYVYY411, DC1394_VIDEO_MODE_640x480_YUV411 },
|
||||
{ 640, 480, PIX_FMT_UYVY422, DC1394_VIDEO_MODE_640x480_YUV422 },
|
||||
{ 0, 0, 0, 0 } /* gotta be the last one */
|
||||
/* The list of color codings that we support.
|
||||
* We assume big endian for the dc1394 16bit modes: libdc1394 never sets the
|
||||
* flag little_endian in dc1394video_frame_t. */
|
||||
struct dc1394_color_coding {
|
||||
int pix_fmt;
|
||||
int score;
|
||||
uint32_t coding;
|
||||
} dc1394_color_codings[] = {
|
||||
{ PIX_FMT_GRAY16BE, 1000, DC1394_COLOR_CODING_MONO16 },
|
||||
{ PIX_FMT_RGB48BE, 1100, DC1394_COLOR_CODING_RGB16 },
|
||||
{ PIX_FMT_GRAY8, 1200, DC1394_COLOR_CODING_MONO8 },
|
||||
{ PIX_FMT_RGB24, 1300, DC1394_COLOR_CODING_RGB8 },
|
||||
{ PIX_FMT_UYYVYY411, 1400, DC1394_COLOR_CODING_YUV411 },
|
||||
{ PIX_FMT_UYVY422, 1500, DC1394_COLOR_CODING_YUV422 },
|
||||
{ PIX_FMT_NONE, 0, 0 } /* gotta be the last one */
|
||||
};
|
||||
|
||||
struct dc1394_frame_rate {
|
||||
|
|
@ -68,9 +77,6 @@ struct dc1394_frame_rate {
|
|||
};
|
||||
|
||||
static const AVOption options[] = {
|
||||
#if HAVE_LIBDC1394_1
|
||||
{ "channel", "", offsetof(dc1394_data, channel), FF_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
|
||||
#endif
|
||||
{ NULL },
|
||||
};
|
||||
|
||||
|
|
@ -81,73 +87,22 @@ static const AVClass libdc1394_class = {
|
|||
.version = LIBAVUTIL_VERSION_INT,
|
||||
};
|
||||
|
||||
|
||||
static inline int dc1394_read_common(AVFormatContext *c, AVFormatParameters *ap,
|
||||
struct dc1394_frame_format **select_fmt, struct dc1394_frame_rate **select_fps)
|
||||
{
|
||||
dc1394_data* dc1394 = c->priv_data;
|
||||
AVStream* vst;
|
||||
struct dc1394_frame_format *fmt;
|
||||
struct dc1394_frame_rate *fps;
|
||||
enum PixelFormat pix_fmt = ap->pix_fmt == PIX_FMT_NONE ? PIX_FMT_UYVY422 : ap->pix_fmt; /* defaults */
|
||||
int width = !ap->width ? 320 : ap->width;
|
||||
int height = !ap->height ? 240 : ap->height;
|
||||
int frame_rate = !ap->time_base.num ? 30000 : av_rescale(1000, ap->time_base.den, ap->time_base.num);
|
||||
|
||||
for (fmt = dc1394_frame_formats; fmt->width; fmt++)
|
||||
if (fmt->pix_fmt == pix_fmt && fmt->width == width && fmt->height == height)
|
||||
break;
|
||||
|
||||
for (fps = dc1394_frame_rates; fps->frame_rate; fps++)
|
||||
if (fps->frame_rate == frame_rate)
|
||||
break;
|
||||
|
||||
if (!fps->frame_rate || !fmt->width) {
|
||||
av_log(c, AV_LOG_ERROR, "Can't find matching camera format for %s, %dx%d@%d:1000fps\n", avcodec_get_pix_fmt_name(pix_fmt),
|
||||
width, height, frame_rate);
|
||||
goto out;
|
||||
}
|
||||
|
||||
/* create a video stream */
|
||||
vst = av_new_stream(c, 0);
|
||||
if (!vst)
|
||||
goto out;
|
||||
av_set_pts_info(vst, 64, 1, 1000);
|
||||
vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
|
||||
vst->codec->codec_id = CODEC_ID_RAWVIDEO;
|
||||
vst->codec->time_base.den = fps->frame_rate;
|
||||
vst->codec->time_base.num = 1000;
|
||||
vst->codec->width = fmt->width;
|
||||
vst->codec->height = fmt->height;
|
||||
vst->codec->pix_fmt = fmt->pix_fmt;
|
||||
|
||||
/* packet init */
|
||||
av_init_packet(&dc1394->packet);
|
||||
dc1394->packet.size = avpicture_get_size(fmt->pix_fmt, fmt->width, fmt->height);
|
||||
dc1394->packet.stream_index = vst->index;
|
||||
dc1394->packet.flags |= AV_PKT_FLAG_KEY;
|
||||
|
||||
dc1394->current_frame = 0;
|
||||
dc1394->fps = fps->frame_rate;
|
||||
|
||||
vst->codec->bit_rate = av_rescale(dc1394->packet.size * 8, fps->frame_rate, 1000);
|
||||
*select_fps = fps;
|
||||
*select_fmt = fmt;
|
||||
return 0;
|
||||
out:
|
||||
return -1;
|
||||
}
|
||||
|
||||
static int dc1394_read_header(AVFormatContext *c, AVFormatParameters * ap)
|
||||
{
|
||||
dc1394_data* dc1394 = c->priv_data;
|
||||
AVStream *vst;
|
||||
const struct dc1394_color_coding *cc;
|
||||
const struct dc1394_frame_rate *fr;
|
||||
dc1394camera_list_t *list;
|
||||
int res, i;
|
||||
struct dc1394_frame_format *fmt = NULL;
|
||||
struct dc1394_frame_rate *fps = NULL;
|
||||
|
||||
if (dc1394_read_common(c,ap,&fmt,&fps) != 0)
|
||||
return -1;
|
||||
dc1394video_modes_t video_modes;
|
||||
dc1394video_mode_t video_mode;
|
||||
dc1394framerates_t frame_rates;
|
||||
dc1394framerate_t frame_rate;
|
||||
uint32_t dc1394_width, dc1394_height, dc1394_color_coding;
|
||||
int rate, best_rate;
|
||||
int score, max_score;
|
||||
int final_width, final_height, final_pix_fmt, final_frame_rate;
|
||||
int res, i, j;
|
||||
|
||||
/* Now let us prep the hardware. */
|
||||
dc1394->d = dc1394_new();
|
||||
|
|
@ -166,6 +121,133 @@ static int dc1394_read_header(AVFormatContext *c, AVFormatParameters * ap)
|
|||
/* Freeing list of cameras */
|
||||
dc1394_camera_free_list (list);
|
||||
|
||||
/* Get the list of video modes supported by the camera. */
|
||||
res = dc1394_video_get_supported_modes (dc1394->camera, &video_modes);
|
||||
if (res != DC1394_SUCCESS) {
|
||||
av_log(c, AV_LOG_ERROR, "Could not get video formats.\n");
|
||||
goto out_camera;
|
||||
}
|
||||
/* Choose the best mode. */
|
||||
rate = (ap->time_base.num ? av_rescale(1000, ap->time_base.den, ap->time_base.num) : -1);
|
||||
max_score = -1;
|
||||
for (i = 0; i < video_modes.num; i++) {
|
||||
if (video_modes.modes[i] == DC1394_VIDEO_MODE_EXIF
|
||||
|| (video_modes.modes[i] >= DC1394_VIDEO_MODE_FORMAT7_MIN
|
||||
&& video_modes.modes[i] <= DC1394_VIDEO_MODE_FORMAT7_MAX)) {
|
||||
/* These modes are currently not supported as they would require
|
||||
* much more work. For the remaining modes, the functions
|
||||
* dc1394_get_image_size_from_video_mode and
|
||||
* dc1394_get_color_coding_from_video_mode do not need to query the
|
||||
* camera, and thus cannot fail. */
|
||||
continue;
|
||||
}
|
||||
dc1394_get_color_coding_from_video_mode (NULL, video_modes.modes[i],
|
||||
&dc1394_color_coding);
|
||||
for (cc = dc1394_color_codings; cc->pix_fmt != PIX_FMT_NONE; cc++)
|
||||
if (cc->coding == dc1394_color_coding)
|
||||
break;
|
||||
if (cc->pix_fmt == PIX_FMT_NONE) {
|
||||
/* We currently cannot handle this color coding. */
|
||||
continue;
|
||||
}
|
||||
/* Here we know that the mode is supported. Get its frame size and the list
|
||||
* of frame rates supported by the camera for this mode. This list is sorted
|
||||
* in ascending order according to libdc1394 example programs. */
|
||||
dc1394_get_image_size_from_video_mode (NULL, video_modes.modes[i],
|
||||
&dc1394_width, &dc1394_height);
|
||||
res = dc1394_video_get_supported_framerates (dc1394->camera, video_modes.modes[i],
|
||||
&frame_rates);
|
||||
if (res != DC1394_SUCCESS || frame_rates.num == 0) {
|
||||
av_log(c, AV_LOG_ERROR, "Cannot get frame rates for video mode.\n");
|
||||
goto out_camera;
|
||||
}
|
||||
/* Choose the best frame rate. */
|
||||
best_rate = -1;
|
||||
for (j = 0; j < frame_rates.num; j++) {
|
||||
for (fr = dc1394_frame_rates; fr->frame_rate; fr++) {
|
||||
if (fr->frame_rate_id == frame_rates.framerates[j]) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (!fr->frame_rate) {
|
||||
/* This frame rate is not supported. */
|
||||
continue;
|
||||
}
|
||||
best_rate = fr->frame_rate;
|
||||
frame_rate = fr->frame_rate_id;
|
||||
if (ap->time_base.num && rate == fr->frame_rate) {
|
||||
/* This is the requested frame rate. */
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (best_rate == -1) {
|
||||
/* No supported rate found. */
|
||||
continue;
|
||||
}
|
||||
/* Here we know that both the mode and the rate are supported. Compute score. */
|
||||
if (ap->width && ap->height
|
||||
&& (dc1394_width == ap->width && dc1394_height == ap->height)) {
|
||||
score = 110000;
|
||||
} else {
|
||||
score = dc1394_width * 10; // 1600 - 16000
|
||||
}
|
||||
if (ap->pix_fmt == cc->pix_fmt) {
|
||||
score += 90000;
|
||||
} else {
|
||||
score += cc->score; // 1000 - 1500
|
||||
}
|
||||
if (ap->time_base.num && rate == best_rate) {
|
||||
score += 70000;
|
||||
} else {
|
||||
score += best_rate / 1000; // 1 - 240
|
||||
}
|
||||
if (score > max_score) {
|
||||
video_mode = video_modes.modes[i];
|
||||
final_width = dc1394_width;
|
||||
final_height = dc1394_height;
|
||||
final_pix_fmt = cc->pix_fmt;
|
||||
final_frame_rate = best_rate;
|
||||
max_score = score;
|
||||
}
|
||||
}
|
||||
if (max_score == -1) {
|
||||
av_log(c, AV_LOG_ERROR, "No suitable video mode / frame rate available.\n");
|
||||
goto out_camera;
|
||||
}
|
||||
if (ap->width && ap->height && !(ap->width == final_width && ap->height == final_height)) {
|
||||
av_log(c, AV_LOG_WARNING, "Requested frame size is not available, using fallback.\n");
|
||||
}
|
||||
if (ap->pix_fmt != PIX_FMT_NONE && ap->pix_fmt != final_pix_fmt) {
|
||||
av_log(c, AV_LOG_WARNING, "Requested pixel format is not supported, using fallback.\n");
|
||||
}
|
||||
if (ap->time_base.num && rate != final_frame_rate) {
|
||||
av_log(c, AV_LOG_WARNING, "Requested frame rate is not available, using fallback.\n");
|
||||
}
|
||||
|
||||
/* create a video stream */
|
||||
vst = av_new_stream(c, 0);
|
||||
if (!vst)
|
||||
goto out_camera;
|
||||
av_set_pts_info(vst, 64, 1, 1000);
|
||||
vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
|
||||
vst->codec->codec_id = CODEC_ID_RAWVIDEO;
|
||||
vst->codec->time_base.den = final_frame_rate;
|
||||
vst->codec->time_base.num = 1000;
|
||||
vst->codec->width = final_width;
|
||||
vst->codec->height = final_height;
|
||||
vst->codec->pix_fmt = final_pix_fmt;
|
||||
|
||||
/* packet init */
|
||||
av_init_packet(&dc1394->packet);
|
||||
dc1394->packet.size = avpicture_get_size(final_pix_fmt, final_width, final_height);
|
||||
dc1394->packet.stream_index = vst->index;
|
||||
dc1394->packet.flags |= AV_PKT_FLAG_KEY;
|
||||
|
||||
dc1394->current_frame = 0;
|
||||
dc1394->fps = final_frame_rate;
|
||||
|
||||
vst->codec->bit_rate = av_rescale(dc1394->packet.size * 8, final_frame_rate, 1000);
|
||||
|
||||
/* Select MAX Speed possible from the cam */
|
||||
if (dc1394->camera->bmode_capable>0) {
|
||||
dc1394_video_set_operation_mode(dc1394->camera, DC1394_OPERATION_MODE_1394B);
|
||||
|
|
@ -182,13 +264,13 @@ static int dc1394_read_header(AVFormatContext *c, AVFormatParameters * ap)
|
|||
goto out_camera;
|
||||
}
|
||||
|
||||
if (dc1394_video_set_mode(dc1394->camera, fmt->frame_size_id) != DC1394_SUCCESS) {
|
||||
if (dc1394_video_set_mode(dc1394->camera, video_mode) != DC1394_SUCCESS) {
|
||||
av_log(c, AV_LOG_ERROR, "Couldn't set video format\n");
|
||||
goto out_camera;
|
||||
}
|
||||
|
||||
if (dc1394_video_set_framerate(dc1394->camera,fps->frame_rate_id) != DC1394_SUCCESS) {
|
||||
av_log(c, AV_LOG_ERROR, "Couldn't set framerate %d \n",fps->frame_rate);
|
||||
if (dc1394_video_set_framerate(dc1394->camera, frame_rate) != DC1394_SUCCESS) {
|
||||
av_log(c, AV_LOG_ERROR, "Could not set framerate %d.\n", final_frame_rate);
|
||||
goto out_camera;
|
||||
}
|
||||
if (dc1394_capture_setup(dc1394->camera, 10, DC1394_CAPTURE_FLAGS_DEFAULT)!=DC1394_SUCCESS) {
|
||||
|
|
@ -256,6 +338,6 @@ AVInputFormat ff_libdc1394_demuxer = {
|
|||
.read_header = dc1394_read_header,
|
||||
.read_packet = dc1394_read_packet,
|
||||
.read_close = dc1394_close,
|
||||
.flags = AVFMT_NOFILE
|
||||
.flags = AVFMT_NOFILE,
|
||||
.priv_class = &libdc1394_class,
|
||||
};
|
||||
|
|
|
|||
Loading…
Reference in New Issue