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ad_spdif: better PTS sync

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pts_bytes can't just be changed at the end. It must be offset to the pts
value, which is reset with each packet read from the demuxer. Make sure
the pts_byte field is always reset after receiving a new PTS, i.e.
increment it after actually writing to the output buffer.

Flush the AVFormatContext's write buffer, because otherwise the audio
PTS will jump around too much: the calculation doesn't use the exact
output buffer size if there's still data in the avio buffer.
This commit is contained in:
wm4 2013-07-11 19:14:30 +02:00
parent 995fe05254
commit 7a4f9cc4d2
1 changed files with 3 additions and 1 deletions
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4
audio/decode/ad_spdif.c
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@ -220,12 +220,14 @@ static int decode_audio(sh_audio_t *sh, unsigned char *buf,
sh->pts = mpkt->pts;
sh->pts_bytes = 0;
}
int out_len = spdif_ctx->out_buffer_len;
int ret = lavf_ctx->oformat->write_packet(lavf_ctx, &pkt);
avio_flush(lavf_ctx->pb);
sh->pts_bytes += spdif_ctx->out_buffer_len - out_len;
talloc_free(mpkt);
if (ret < 0)
break;
}
sh->pts_bytes += spdif_ctx->out_buffer_len;
return spdif_ctx->out_buffer_len;
}