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avformat/img2dec: support nanosecond file times 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-05-25 15:34:27 +02:00
parent 513a431e07
commit f683895dee
2 changed files with 18 additions and 2 deletions
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2
doc/demuxers.texi
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@ -265,6 +265,8 @@ is 5.
If set to 1, will set frame timestamp to modification time of image file. Note
that monotonity of timestamps is not provided: images go in the same order as
without this option. Default value is 0.
If set to 2, will set frame timestamp to the modification time of the image file in
nanosecond precission.
@item video_size
Set the video size of the images to read. If not specified the video
size is guessed from the first image file in the sequence.

18
libavformat/img2dec.c
View File

@ -20,6 +20,7 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define _BSD_SOURCE
#include <sys/stat.h>
#include "libavutil/avstring.h"
#include "libavutil/log.h"
@ -200,7 +201,13 @@ int ff_img_read_header(AVFormatContext *s1)
st->need_parsing = AVSTREAM_PARSE_FULL;
}
if (s->ts_from_file)
if (s->ts_from_file == 2) {
#if !HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
av_log(s1, AV_LOG_ERROR, "POSIX.1-2008 not supported, nanosecond file timestamps unavailable\n");
return AVERROR(ENOSYS);
#endif
avpriv_set_pts_info(st, 64, 1, 1000000000);
} else if (s->ts_from_file)
avpriv_set_pts_info(st, 64, 1, 1);
else
avpriv_set_pts_info(st, 64, s->framerate.den, s->framerate.num);
@ -394,6 +401,10 @@ int ff_img_read_packet(AVFormatContext *s1, AVPacket *pkt)
if (stat(filename, &img_stat))
return AVERROR(EIO);
pkt->pts = (int64_t)img_stat.st_mtime;
#if HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
if (s->ts_from_file == 2)
pkt->pts = 1000000000*pkt->pts + img_stat.st_mtim.tv_nsec;
#endif
av_add_index_entry(s1->streams[0], s->img_number, pkt->pts, 0, 0, AVINDEX_KEYFRAME);
} else if (!s->is_pipe) {
pkt->pts = s->pts;
@ -468,7 +479,10 @@ static const AVOption options[] = {
{ "start_number_range", "set range for looking at the first sequence number", OFFSET(start_number_range), AV_OPT_TYPE_INT, {.i64 = 5}, 1, INT_MAX, DEC },
{ "video_size", "set video size", OFFSET(width), AV_OPT_TYPE_IMAGE_SIZE, {.str = NULL}, 0, 0, DEC },
{ "frame_size", "force frame size in bytes", OFFSET(frame_size), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, INT_MAX, DEC },
{ "ts_from_file", "set frame timestamp from file's one", OFFSET(ts_from_file), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, DEC },
{ "ts_from_file", "set frame timestamp from file's one", OFFSET(ts_from_file), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 2, DEC, "ts_type" },
{ "none", "none", 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, 0, 2, DEC, "ts_type" },
{ "sec", "second precission", 0, AV_OPT_TYPE_CONST, {.i64 = 1 }, 0, 2, DEC, "ts_type" },
{ "ns", "nano second precission", 0, AV_OPT_TYPE_CONST, {.i64 = 2 }, 0, 2, DEC, "ts_type" },
{ NULL },
};