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Code Issues Releases Activity

Improve frame size calculation in caf muxer to fix adpcm_ms remuxing.

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Fixes ticket #3645.
This commit is contained in:
Carl Eugen Hoyos 2014-05-30 07:26:18 +02:00
parent 772d46d3b3
commit 1acb5ca02a
1 changed files with 5 additions and 5 deletions
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10
libavformat/cafenc.c
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@ -51,7 +51,7 @@ static uint32_t codec_flags(enum AVCodecID codec_id) {
}
}
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:
@ -91,9 +91,9 @@ static uint32_t samples_per_packet(enum AVCodecID codec_id, int channels) {
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;
}
@ -146,7 +146,7 @@ static int caf_write_header(AVFormatContext *s)
}
if (enc->codec_id != AV_CODEC_ID_MP3 || frame_size != 576)
frame_size = samples_per_packet(enc->codec_id, enc->channels);
frame_size = samples_per_packet(enc->codec_id, enc->channels, enc->block_align);
ffio_wfourcc(pb, "caff"); //< mFileType
avio_wb16(pb, 1); //< mFileVersion
@ -259,7 +259,7 @@ static int caf_write_trailer(AVFormatContext *s)
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);