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libdc1394: add a pixel_format private option.

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This commit is contained in:
Anton Khirnov 2011-05-24 09:02:11 +02:00
parent 1a950da6a2
commit 2e0e1e712a
1 changed files with 13 additions and 1 deletions
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14
libavdevice/libdc1394.c
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@ -25,6 +25,7 @@
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"
#if HAVE_LIBDC1394_2
#include <dc1394/dc1394.h>
@ -61,6 +62,7 @@ typedef struct dc1394_data {
int current_frame;
int fps;
char *video_size; /**< String describing video size, set by a private option. */
char *pixel_format; /**< Set by a private option. */
AVPacket packet;
} dc1394_data;
@ -99,6 +101,7 @@ static const AVOption options[] = {
{ "channel", "", offsetof(dc1394_data, channel), FF_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
#endif
{ "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(video_size), FF_OPT_TYPE_STRING, {.str = "qvga"}, 0, 0, DEC },
{ "pixel_format", "", OFFSET(pixel_format), FF_OPT_TYPE_STRING, {.str = "uyvy422"}, 0, 0, DEC },
{ NULL },
};
@ -117,11 +120,17 @@ static inline int dc1394_read_common(AVFormatContext *c, AVFormatParameters *ap,
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 */
enum PixelFormat pix_fmt;
int width, height;
int frame_rate = !ap->time_base.num ? 30000 : av_rescale(1000, ap->time_base.den, ap->time_base.num);
int ret = 0;
if ((pix_fmt = av_get_pix_fmt(dc1394->pixel_format)) == PIX_FMT_NONE) {
av_log(c, AV_LOG_ERROR, "No such pixel format: %s.\n", dc1394->pixel_format);
ret = AVERROR(EINVAL);
goto out;
}
if ((ret = av_parse_video_size(&width, &height, dc1394->video_size)) < 0) {
av_log(c, AV_LOG_ERROR, "Couldn't parse video size.\n");
goto out;
@ -131,6 +140,8 @@ static inline int dc1394_read_common(AVFormatContext *c, AVFormatParameters *ap,
width = ap->width;
if (ap->height > 0)
height = ap->height;
if (ap->pix_fmt)
pix_fmt = ap->pix_fmt;
#endif
for (fmt = dc1394_frame_formats; fmt->width; fmt++)
@ -177,6 +188,7 @@ static inline int dc1394_read_common(AVFormatContext *c, AVFormatParameters *ap,
*select_fmt = fmt;
out:
av_freep(&dc1394->video_size);
av_freep(&dc1394->pixel_format);
return ret;
}