avio_wb16(pb, par->sample_rate);
avio_wb16(pb, 0x0000); /* play mode ? (0x0000 = don't loop) */
avio_wb16(pb, par->sample_rate);
avio_wb16(pb, 0x0000); /* play mode ? (0x0000 = don't loop) */
.audio_codec = AV_CODEC_ID_PCM_U8,
.video_codec = AV_CODEC_ID_NONE,
.write_header = rso_write_header,
.audio_codec = AV_CODEC_ID_PCM_U8,
.video_codec = AV_CODEC_ID_NONE,
.write_header = rso_write_header,