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pulse: Add a wallclock option to be compatible with other other captures 

alsa and x11grab use av_gettime() to report timestamps.

Bug-Id: 647
This commit is contained in:
Luca Barbato 2014-08-23 19:03:21 +02:00
parent 749b1f1359
commit 424b929b5c
1 changed files with 5 additions and 0 deletions
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5
libavdevice/pulse.c
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@ -31,6 +31,7 @@
#include "libavformat/avformat.h"
#include "libavformat/internal.h"
#include "libavutil/time.h"
#include "libavutil/opt.h"
#define DEFAULT_CODEC_ID AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE)
@ -47,6 +48,7 @@ typedef struct PulseData {
pa_simple *s;
int64_t pts;
int64_t frame_duration;
int wallclock;
} PulseData;
static pa_sample_format_t codec_id_to_pulse_format(int codec_id) {
@ -141,6 +143,8 @@ static int pulse_read_packet(AVFormatContext *s, AVPacket *pkt)
if (pd->pts == AV_NOPTS_VALUE) {
pd->pts = -latency;
if (pd->wallclock)
pd->pts += av_gettime();
}
pkt->pts = pd->pts;
@ -168,6 +172,7 @@ static const AVOption options[] = {
{ "channels", "number of audio channels", OFFSET(channels), AV_OPT_TYPE_INT, {.i64 = 2}, 1, INT_MAX, D },
{ "frame_size", "number of bytes per frame", OFFSET(frame_size), AV_OPT_TYPE_INT, {.i64 = 1024}, 1, INT_MAX, D },
{ "fragment_size", "buffering size, affects latency and cpu usage", OFFSET(fragment_size), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, D },
{ "wallclock", "set the initial pts using the current time", OFFSET(wallclock), AV_OPT_TYPE_INT, {.i64 = 0}, -1, 1, D },
{ NULL },
};