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support alac in ipod m4a format, tested on quicktime 

Originally committed as revision 13739 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier 2008-06-11 08:17:38 +00:00
parent 39883fffa7
commit 709c9f8de3
1 changed files with 15 additions and 1 deletions
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16
libavformat/movenc.c
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@ -397,6 +397,8 @@ static int mov_write_audio_tag(ByteIOContext *pb, MOVTrack *track)
mov_write_esds_tag(pb, track);
else if(track->enc->codec_id == CODEC_ID_AMR_NB)
mov_write_amr_tag(pb, track);
else if (track->enc->codec_id == CODEC_ID_ALAC)
mov_write_extradata_tag(pb, track);
else if(track->vosLen > 0)
mov_write_glbl_tag(pb, track);
@ -503,15 +505,27 @@ static const AVCodecTag mov_pix_fmt_tags[] = {
{ PIX_FMT_BGR32_1, MKTAG('r','a','w',' ') },
};
static const AVCodecTag codec_ipod_tags[] = {
{ CODEC_ID_H264, MKTAG('a','v','c','1') },
{ CODEC_ID_MPEG4, MKTAG('m','p','4','v') },
{ CODEC_ID_AAC, MKTAG('m','p','4','a') },
{ CODEC_ID_ALAC, MKTAG('a','l','a','c') },
};
static int mov_find_codec_tag(AVFormatContext *s, MOVTrack *track)
{
int tag = track->enc->codec_tag;
if (track->mode == MODE_MP4 || track->mode == MODE_PSP || track->mode == MODE_IPOD) {
if (track->mode == MODE_MP4 || track->mode == MODE_PSP) {
if (!codec_get_tag(ff_mp4_obj_type, track->enc->codec_id))
return 0;
if (track->enc->codec_id == CODEC_ID_H264) tag = MKTAG('a','v','c','1');
else if (track->enc->codec_type == CODEC_TYPE_VIDEO) tag = MKTAG('m','p','4','v');
else if (track->enc->codec_type == CODEC_TYPE_AUDIO) tag = MKTAG('m','p','4','a');
} else if (track->mode == MODE_IPOD) {
tag = codec_get_tag(codec_ipod_tags, track->enc->codec_id);
if (!match_ext(s->filename, "m4a") && !match_ext(s->filename, "m4v"))
av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a nor .m4v "
"Quicktime/Ipod might not play the file\n");
} else if (track->mode == MODE_3GP || track->mode == MODE_3G2) {
tag = codec_get_tag(codec_3gp_tags, track->enc->codec_id);
} else if (!tag || (track->enc->strict_std_compliance >= FF_COMPLIANCE_NORMAL &&