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matroskaenc: write the channel mask for FLAC

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This commit is contained in:
Anton Khirnov 2014-05-26 13:53:13 +02:00
parent efcde917af
commit 106b62f4ba
2 changed files with 47 additions and 2 deletions
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2
libavformat/Makefile
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@ -170,7 +170,7 @@ OBJS-$(CONFIG_MATROSKA_DEMUXER) += matroskadec.o matroska.o \
oggparsevorbis.o vorbiscomment.o
OBJS-$(CONFIG_MATROSKA_MUXER) += matroskaenc.o matroska.o \
isom.o avc.o hevc.o \
flacenc_header.o avlanguage.o wv.o
flacenc_header.o avlanguage.o vorbiscomment.o wv.o
OBJS-$(CONFIG_MD5_MUXER) += md5enc.o
OBJS-$(CONFIG_MJPEG_DEMUXER) += rawdec.o
OBJS-$(CONFIG_MJPEG_MUXER) += rawenc.o

47
libavformat/matroskaenc.c
View File

@ -30,9 +30,11 @@
#include "isom.h"
#include "matroska.h"
#include "riff.h"
#include "vorbiscomment.h"
#include "wv.h"
#include "libavutil/avstring.h"
#include "libavutil/channel_layout.h"
#include "libavutil/dict.h"
#include "libavutil/intfloat.h"
#include "libavutil/intreadwrite.h"
@ -469,6 +471,49 @@ static int put_wv_codecpriv(AVIOContext *pb, AVCodecContext *codec)
return 0;
}
static int put_flac_codecpriv(AVFormatContext *s,
AVIOContext *pb, AVCodecContext *codec)
{
int write_comment = (codec->channel_layout &&
!(codec->channel_layout & ~0x3ffffULL) &&
!ff_flac_is_native_layout(codec->channel_layout));
int ret = ff_flac_write_header(pb, codec, !write_comment);
if (ret < 0)
return ret;
if (write_comment) {
const char *vendor = (s->flags & AVFMT_FLAG_BITEXACT) ?
"Libav" : LIBAVFORMAT_IDENT;
AVDictionary *dict = NULL;
uint8_t buf[32], *data, *p;
int len;
snprintf(buf, sizeof(buf), "0x%"PRIx64, codec->channel_layout);
av_dict_set(&dict, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", buf, 0);
len = ff_vorbiscomment_length(dict, vendor);
data = av_malloc(len + 4);
if (!data) {
av_dict_free(&dict);
return AVERROR(ENOMEM);
}
data[0] = 0x84;
AV_WB24(data + 1, len);
p = data + 4;
ff_vorbiscomment_write(&p, &dict, vendor);
avio_write(pb, data, len + 4);
av_freep(&data);
av_dict_free(&dict);
}
return 0;
}
static void get_aac_sample_rates(AVFormatContext *s, AVCodecContext *codec, int *sample_rate, int *output_sample_rate)
{
MPEG4AudioConfig mp4ac;
@ -497,7 +542,7 @@ static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb, AVCodecCo
if (codec->codec_id == AV_CODEC_ID_VORBIS || codec->codec_id == AV_CODEC_ID_THEORA)
ret = put_xiph_codecpriv(s, dyn_cp, codec);
else if (codec->codec_id == AV_CODEC_ID_FLAC)
ret = ff_flac_write_header(dyn_cp, codec, 1);
ret = put_flac_codecpriv(s, dyn_cp, codec);
else if (codec->codec_id == AV_CODEC_ID_WAVPACK)
ret = put_wv_codecpriv(dyn_cp, codec);
else if (codec->codec_id == AV_CODEC_ID_H264)