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ffplay: add get_master_sync_type function

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The real av_sync_type may be different to VideoState->av_sync_type, because the
required audio or video stream for audio or video clock may not be available.
We will use a function to query the real av_sync_type which is used for
determining the master clock.

Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint 2012-10-13 21:33:32 +02:00
parent b2a8850969
commit fca16a1571
1 changed files with 24 additions and 10 deletions
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34
ffplay.c
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@ -1066,23 +1066,37 @@ static double get_external_clock(VideoState *is)
}
}
static int get_master_sync_type(VideoState *is) {
if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
if (is->video_st)
return AV_SYNC_VIDEO_MASTER;
else
return AV_SYNC_AUDIO_MASTER;
} else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
if (is->audio_st)
return AV_SYNC_AUDIO_MASTER;
else
return AV_SYNC_VIDEO_MASTER;
} else {
return AV_SYNC_EXTERNAL_CLOCK;
}
}
/* get the current master clock value */
static double get_master_clock(VideoState *is)
{
double val;
if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
if (is->video_st)
switch (get_master_sync_type(is)) {
case AV_SYNC_VIDEO_MASTER:
val = get_video_clock(is);
else
break;
case AV_SYNC_AUDIO_MASTER:
val = get_audio_clock(is);
} else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
if (is->audio_st)
val = get_audio_clock(is);
else
val = get_video_clock(is);
} else {
val = get_external_clock(is);
break;
default:
val = get_external_clock(is);
break;
}
return val;
}