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Support adpcm_ima_wav and adpcm_ms in caf.

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This commit is contained in:
Carl Eugen Hoyos 2011-07-12 17:35:20 +02:00
parent afa218f372
commit 45ecc7a294
2 changed files with 8 additions and 2 deletions
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2
libavformat/caf.c
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@ -39,6 +39,8 @@ const AVCodecTag ff_codec_caf_tags[] = {
/*{ CODEC_ID_DVAUDIO, MKBETAG('v','d','v','a') },*/
/*{ CODEC_ID_DVAUDIO, MKBETAG('d','v','c','a') },*/
{ CODEC_ID_ADPCM_IMA_QT, MKBETAG('i','m','a','4') },
{ CODEC_ID_ADPCM_IMA_WAV, MKBETAG('m','s', 0, 17 ) },
{ CODEC_ID_ADPCM_MS, MKBETAG('m','s', 0, 2 ) },
{ CODEC_ID_AMR_NB, MKBETAG('s','a','m','r') },
{ CODEC_ID_GSM, MKBETAG('a','g','s','m') },
{ CODEC_ID_GSM_MS, MKBETAG('m','s', 0, '1') },

8
libavformat/cafenc.c
View File

@ -47,7 +47,7 @@ static uint32_t codec_flags(enum CodecID codec_id) {
}
}
static uint32_t samples_per_packet(enum CodecID codec_id) {
static uint32_t samples_per_packet(enum CodecID codec_id, int channels) {
switch (codec_id) {
case CODEC_ID_PCM_S8:
case CODEC_ID_PCM_S16LE:
@ -84,6 +84,10 @@ static uint32_t samples_per_packet(enum CodecID codec_id) {
case CODEC_ID_ALAC:
case CODEC_ID_QDM2:
return 4096;
case CODEC_ID_ADPCM_IMA_WAV:
return (1024 - 4 * channels) * 8 / (4 * channels) + 1;
case CODEC_ID_ADPCM_MS:
return (1024 - 7 * channels) * 2 / channels + 2;
default:
return 0;
}
@ -133,7 +137,7 @@ static int caf_write_header(AVFormatContext *s)
avio_wb32(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)); //< mFramesPerPacket
avio_wb32(pb, samples_per_packet(enc->codec_id, enc->channels)); //< mFramesPerPacket
avio_wb32(pb, enc->channels); //< mChannelsPerFrame
avio_wb32(pb, enc->bits_per_coded_sample); //< mBitsPerChannel