|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#include <stdint.h> |
|
#include <sndio.h> |
|
|
|
#include "libavutil/internal.h" |
|
|
|
#include "libavformat/mux.h" |
|
|
|
#include "libavdevice/avdevice.h" |
|
#include "libavdevice/sndio.h" |
|
|
|
static av_cold int audio_write_header(AVFormatContext *s1) |
|
{ |
|
SndioData *s = s1->priv_data; |
|
AVStream *st; |
|
int ret; |
|
|
|
st = s1->streams[0]; |
|
s->sample_rate = st->codecpar->sample_rate; |
|
s->channels = st->codecpar->ch_layout.nb_channels; |
|
|
|
ret = ff_sndio_open(s1, 1, s1->url); |
|
|
|
return ret; |
|
} |
|
|
|
static int audio_write_packet(AVFormatContext *s1, AVPacket *pkt) |
|
{ |
|
SndioData *s = s1->priv_data; |
|
const uint8_t *buf = pkt->data; |
|
int size = pkt->size; |
|
int len, ret; |
|
|
|
while (size > 0) { |
|
len = FFMIN(s->buffer_size - s->buffer_offset, size); |
|
memcpy(s->buffer + s->buffer_offset, buf, len); |
|
buf += len; |
|
size -= len; |
|
s->buffer_offset += len; |
|
if (s->buffer_offset >= s->buffer_size) { |
|
ret = sio_write(s->hdl, s->buffer, s->buffer_size); |
|
if (ret == 0 || sio_eof(s->hdl)) |
|
return AVERROR(EIO); |
|
s->softpos += ret; |
|
s->buffer_offset = 0; |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int audio_write_trailer(AVFormatContext *s1) |
|
{ |
|
SndioData *s = s1->priv_data; |
|
|
|
sio_write(s->hdl, s->buffer, s->buffer_offset); |
|
|
|
ff_sndio_close(s); |
|
|
|
return 0; |
|
} |
|
|
|
static const AVClass sndio_muxer_class = { |
|
.class_name = "sndio outdev", |
|
.item_name = av_default_item_name, |
|
.version = LIBAVUTIL_VERSION_INT, |
|
.category = AV_CLASS_CATEGORY_DEVICE_AUDIO_OUTPUT, |
|
}; |
|
|
|
const FFOutputFormat ff_sndio_muxer = { |
|
.p.name = "sndio", |
|
.p.long_name = NULL_IF_CONFIG_SMALL("sndio audio playback"), |
|
.priv_data_size = sizeof(SndioData), |
|
|
|
|
|
|
|
.p.audio_codec = AV_NE(AV_CODEC_ID_PCM_S16BE, AV_CODEC_ID_PCM_S16LE), |
|
.p.video_codec = AV_CODEC_ID_NONE, |
|
.write_header = audio_write_header, |
|
.write_packet = audio_write_packet, |
|
.write_trailer = audio_write_trailer, |
|
.p.flags = AVFMT_NOFILE, |
|
.p.priv_class = &sndio_muxer_class, |
|
}; |
|
|