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Code Issues Releases Activity

lavd/alsa: preliminary support of uncoded frame.

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This commit is contained in:
Nicolas George 2013-12-31 14:09:15 +01:00
parent 1b05ac220e
commit 62106fcc23
1 changed files with 19 additions and 0 deletions
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19
libavdevice/alsa-audio-enc.c
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@ -113,6 +113,24 @@ static int audio_write_packet(AVFormatContext *s1, AVPacket *pkt)
return 0;
}
static int audio_write_frame(AVFormatContext *s1, int stream_index,
AVFrame **frame, unsigned flags)
{
AlsaData *s = s1->priv_data;
AVPacket pkt;
/* ff_alsa_open() should have accepted only supported formats */
if ((flags & AV_WRITE_UNCODED_FRAME_QUERY))
return av_sample_fmt_is_planar(s1->streams[stream_index]->codec->sample_fmt) ?
AVERROR(EINVAL) : 0;
/* set only used fields */
pkt.data = (*frame)->data[0];
pkt.size = (*frame)->nb_samples * s->frame_size;
pkt.dts = (*frame)->pkt_dts;
pkt.duration = av_frame_get_pkt_duration(*frame);
return audio_write_packet(s1, &pkt);
}
static void
audio_get_output_timestamp(AVFormatContext *s1, int stream,
int64_t *dts, int64_t *wall)
@ -133,6 +151,7 @@ AVOutputFormat ff_alsa_muxer = {
.write_header = audio_write_header,
.write_packet = audio_write_packet,
.write_trailer = ff_alsa_close,
.write_uncoded_frame = audio_write_frame,
.get_output_timestamp = audio_get_output_timestamp,
.flags = AVFMT_NOFILE,
};