}
}
-static uint32_t samples_per_packet(enum AVCodecID codec_id, int channels) {
+static uint32_t samples_per_packet(enum AVCodecID codec_id, int channels, int block_align) {
switch (codec_id) {
case AV_CODEC_ID_PCM_S8:
case AV_CODEC_ID_PCM_S16LE:
case AV_CODEC_ID_ALAC:
return 4096;
case AV_CODEC_ID_ADPCM_IMA_WAV:
- return (1024 - 4 * channels) * 8 / (4 * channels) + 1;
+ return (block_align - 4 * channels) * 8 / (4 * channels) + 1;
case AV_CODEC_ID_ADPCM_MS:
- return (1024 - 7 * channels) * 2 / channels + 2;
+ return (block_align - 7 * channels) * 2 / channels + 2;
default:
return 0;
}
AVDictionaryEntry *t = NULL;
unsigned int codec_tag = ff_codec_get_tag(ff_codec_caf_tags, enc->codec_id);
int64_t chunk_size = 0;
+ int frame_size = enc->frame_size;
if (s->nb_streams != 1) {
av_log(s, AV_LOG_ERROR, "CAF files have exactly one stream\n");
return AVERROR_INVALIDDATA;
}
+ if (enc->codec_id != AV_CODEC_ID_MP3 || frame_size != 576)
+ frame_size = samples_per_packet(enc->codec_id, enc->channels, enc->block_align);
+
ffio_wfourcc(pb, "caff"); //< mFileType
avio_wb16(pb, 1); //< mFileVersion
avio_wb16(pb, 0); //< mFileFlags
avio_wl32(pb, codec_tag); //< mFormatID
avio_wb32(pb, codec_flags(enc->codec_id)); //< mFormatFlags
avio_wb32(pb, enc->block_align); //< mBytesPerPacket
- avio_wb32(pb, samples_per_packet(enc->codec_id, enc->channels)); //< mFramesPerPacket
+ avio_wb32(pb, frame_size); //< mFramesPerPacket
avio_wb32(pb, enc->channels); //< mChannelsPerFrame
avio_wb32(pb, av_get_bits_per_sample(enc->codec_id)); //< mBitsPerChannel
ffio_wfourcc(pb, "pakt");
avio_wb64(pb, caf->size_entries_used + 24);
avio_wb64(pb, caf->packets); ///< mNumberPackets
- avio_wb64(pb, caf->packets * samples_per_packet(enc->codec_id, enc->channels)); ///< mNumberValidFrames
+ avio_wb64(pb, caf->packets * samples_per_packet(enc->codec_id, enc->channels, enc->block_align)); ///< mNumberValidFrames
avio_wb32(pb, 0); ///< mPrimingFrames
avio_wb32(pb, 0); ///< mRemainderFrames
avio_write(pb, caf->pkt_sizes, caf->size_entries_used);