typedef struct {
int64_t atrpos, atsqpos, awapos;
int64_t data_end;
+ int stereo;
} MMFContext;
static const int mmf_rates[] = { 4000, 8000, 11025, 22050, 44100 };
AVIOContext *pb = s->pb;
int64_t pos;
int rate;
+ const char *version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
+ "VN:Lavf," :
+ "VN:"LIBAVFORMAT_IDENT",";
rate = mmf_rate_code(s->streams[0]->codec->sample_rate);
if(rate < 0) {
return AVERROR(EINVAL);
}
+ mmf->stereo = s->streams[0]->codec->channels > 1;
+ if (mmf->stereo &&
+ s->streams[0]->codec->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
+ av_log(s, AV_LOG_ERROR, "Yamaha SMAF stereo is experimental, "
+ "add '-strict %d' if you want to use it.\n",
+ FF_COMPLIANCE_EXPERIMENTAL);
+ return AVERROR(EINVAL);
+ }
+
ffio_wfourcc(pb, "MMMD");
avio_wb32(pb, 0);
pos = ff_start_tag(pb, "CNTI");
avio_w8(pb, 0); /* counts */
end_tag_be(pb, pos);
pos = ff_start_tag(pb, "OPDA");
- avio_write(pb, "VN:libavcodec,", sizeof("VN:libavcodec,") -1); /* metadata ("ST:songtitle,VN:version,...") */
+ avio_write(pb, version, strlen(version)); /* metadata ("ST:songtitle,VN:version,...") */
end_tag_be(pb, pos);
avio_write(pb, "ATR\x00", 4);
mmf->atrpos = avio_tell(pb);
avio_w8(pb, 0); /* format type */
avio_w8(pb, 0); /* sequence type */
- avio_w8(pb, (0 << 7) | (1 << 4) | rate); /* (channel << 7) | (format << 4) | rate */
+ avio_w8(pb, (mmf->stereo << 7) | (1 << 4) | rate); /* (channel << 7) | (format << 4) | rate */
avio_w8(pb, 0); /* wave base bit */
avio_w8(pb, 2); /* time base d */
avio_w8(pb, 2); /* time base g */
/* "play wav" */
avio_w8(pb, 0); /* start time */
- avio_w8(pb, 1); /* (channel << 6) | wavenum */
+ avio_w8(pb, (mmf->stereo << 6) | 1); /* (channel << 6) | wavenum */
gatetime = size * 500 / s->streams[0]->codec->sample_rate;
put_varlength(pb, gatetime); /* duration */
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = AV_CODEC_ID_ADPCM_YAMAHA;
st->codec->sample_rate = rate;
- st->codec->channels = 1;
- st->codec->channel_layout = AV_CH_LAYOUT_MONO;
+ st->codec->channels = (params >> 7) + 1;
+ st->codec->channel_layout = params >> 7 ? AV_CH_LAYOUT_STEREO : AV_CH_LAYOUT_MONO;
st->codec->bits_per_coded_sample = 4;
st->codec->bit_rate = st->codec->sample_rate * st->codec->bits_per_coded_sample;