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pulse: compute frame_duration once and fix it 

The frame duration was calculated without taking in account the
bytes per sample.

Thanks to Lorenzo Pistone <blaffablaffa@gmail.com> for pointing
the issue and providing an initial fix.
This commit is contained in:
Luca Barbato 2011-11-14 15:53:59 +01:00
parent caf27e37b6
commit 2625b621ce
1 changed files with 4 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
libavdevice/pulse.c
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@ -46,6 +46,7 @@ typedef struct PulseData {
int fragment_size;
pa_simple *s;
int64_t pts;
int64_t frame_duration;
} PulseData;
static pa_sample_format_t codec_id_to_pulse_format(int codec_id) {
@ -110,6 +111,8 @@ static av_cold int pulse_read_header(AVFormatContext *s,
av_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */
pd->pts = AV_NOPTS_VALUE;
pd->frame_duration = (pd->frame_size * 1000000LL * 8) /
(pd->sample_rate * pd->channels * av_get_bits_per_sample(codec_id));
return 0;
}
@ -119,8 +122,6 @@ static int pulse_read_packet(AVFormatContext *s, AVPacket *pkt)
PulseData *pd = s->priv_data;
int res;
pa_usec_t latency;
uint64_t frame_duration =
(pd->frame_size*1000000LL) / (pd->sample_rate * pd->channels);
if (av_new_packet(pkt, pd->frame_size) < 0) {
return AVERROR(ENOMEM);
@ -145,7 +146,7 @@ static int pulse_read_packet(AVFormatContext *s, AVPacket *pkt)
pkt->pts = pd->pts;
pd->pts += frame_duration;
pd->pts += pd->frame_duration;
return 0;
}