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* Add code to allow the img reader to read files at the nominal frame rate.

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This (will) allow testing of ffserver in an automated way. The code is nasty
  in that it uses a global.......

Originally committed as revision 1331 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Philip Gladstone 2002-12-11 03:18:47 +00:00
parent a4d70941cd
commit 38758ab0cd
1 changed files with 20 additions and 0 deletions
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20
libavformat/img.c
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@ -16,6 +16,7 @@
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <unistd.h>
#include "avformat.h"
extern AVInputFormat pgm_iformat;
@ -55,6 +56,8 @@ typedef struct {
char path[1024];
} VideoData;
int emulate_frame_rate;
static inline int pnm_space(int c)
{
return (c==' ' || c=='\n' || c=='\r' || c=='\t');
@ -190,6 +193,23 @@ static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
char filename[1024];
int ret;
ByteIOContext f1, *f;
static INT64 first_frame;
if (emulate_frame_rate) {
if (!first_frame) {
first_frame = av_gettime();
} else {
INT64 pts;
INT64 nowus;
nowus = av_gettime() - first_frame;
pts = ((INT64)s->img_number * FRAME_RATE_BASE * 1000000) / (s1->streams[0]->codec.frame_rate);
if (pts > nowus)
usleep(pts - nowus);
}
}
/*
This if-statement destroys pipes - I do not see why it is necessary