From 2578326f13e5ea7945e2da810238118832dfb7a1 Mon Sep 17 00:00:00 2001 From: Justin Ruggles Date: Thu, 26 Feb 2009 02:41:53 +0000 Subject: [PATCH] Share the function to write a raw FLAC header and use it in the Matroska muxer. Originally committed as revision 17606 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavformat/Makefile | 4 ++-- libavformat/flacenc.c | 13 +++++++++---- libavformat/flacenc.h | 29 +++++++++++++++++++++++++++++ libavformat/matroskaenc.c | 23 ++--------------------- 4 files changed, 42 insertions(+), 27 deletions(-) create mode 100644 libavformat/flacenc.h diff --git a/libavformat/Makefile b/libavformat/Makefile index 505a6ba..c6b99e7 100644 --- a/libavformat/Makefile +++ b/libavformat/Makefile @@ -83,9 +83,9 @@ OBJS-$(CONFIG_ISS_DEMUXER) += iss.o OBJS-$(CONFIG_LMLM4_DEMUXER) += lmlm4.o OBJS-$(CONFIG_M4V_DEMUXER) += raw.o OBJS-$(CONFIG_M4V_MUXER) += raw.o -OBJS-$(CONFIG_MATROSKA_AUDIO_MUXER) += matroskaenc.o matroska.o riff.o isom.o avc.o +OBJS-$(CONFIG_MATROSKA_AUDIO_MUXER) += matroskaenc.o matroska.o riff.o isom.o avc.o flacenc.o OBJS-$(CONFIG_MATROSKA_DEMUXER) += matroskadec.o matroska.o riff.o isom.o -OBJS-$(CONFIG_MATROSKA_MUXER) += matroskaenc.o matroska.o riff.o isom.o avc.o +OBJS-$(CONFIG_MATROSKA_MUXER) += matroskaenc.o matroska.o riff.o isom.o avc.o flacenc.o OBJS-$(CONFIG_MJPEG_DEMUXER) += raw.o OBJS-$(CONFIG_MJPEG_MUXER) += raw.o OBJS-$(CONFIG_MLP_DEMUXER) += raw.o id3v2.o diff --git a/libavformat/flacenc.c b/libavformat/flacenc.c index b391f88..81844cc 100644 --- a/libavformat/flacenc.c +++ b/libavformat/flacenc.c @@ -21,13 +21,13 @@ #include "libavcodec/flac.h" #include "avformat.h" +#include "flacenc.h" -static int flac_write_header(struct AVFormatContext *s) +int ff_flac_write_header(ByteIOContext *pb, AVCodecContext *codec) { static const uint8_t header[8] = { 0x66, 0x4C, 0x61, 0x43, 0x80, 0x00, 0x00, 0x22 }; - AVCodecContext *codec = s->streams[0]->codec; uint8_t *streaminfo; enum FLACExtradataFormat format; @@ -36,15 +36,20 @@ static int flac_write_header(struct AVFormatContext *s) /* write "fLaC" stream marker and first metadata block header if needed */ if (format == FLAC_EXTRADATA_FORMAT_STREAMINFO) { - put_buffer(s->pb, header, 8); + put_buffer(pb, header, 8); } /* write STREAMINFO or full header */ - put_buffer(s->pb, codec->extradata, codec->extradata_size); + put_buffer(pb, codec->extradata, codec->extradata_size); return 0; } +static int flac_write_header(struct AVFormatContext *s) +{ + return ff_flac_write_header(s->pb, s->streams[0]->codec); +} + static int flac_write_trailer(struct AVFormatContext *s) { ByteIOContext *pb = s->pb; diff --git a/libavformat/flacenc.h b/libavformat/flacenc.h new file mode 100644 index 0000000..a9b7f62 --- /dev/null +++ b/libavformat/flacenc.h @@ -0,0 +1,29 @@ +/* + * raw FLAC muxer + * Copyright (C) 2009 Justin Ruggles + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVFORMAT_FLACENC_H +#define AVFORMAT_FLACENC_H + +#include "avformat.h" + +int ff_flac_write_header(ByteIOContext *pb, AVCodecContext *codec); + +#endif /* AVFORMAT_FLACENC_H */ diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c index 0b0adef..051fb1b 100644 --- a/libavformat/matroskaenc.c +++ b/libavformat/matroskaenc.c @@ -24,11 +24,11 @@ #include "isom.h" #include "matroska.h" #include "avc.h" +#include "flacenc.h" #include "libavutil/intreadwrite.h" #include "libavutil/md5.h" #include "libavcodec/xiph.h" #include "libavcodec/mpeg4audio.h" -#include "libavcodec/flac.h" typedef struct ebml_master { int64_t pos; ///< absolute offset in the file where the master's elements start @@ -421,25 +421,6 @@ static int put_xiph_codecpriv(AVFormatContext *s, ByteIOContext *pb, AVCodecCont return 0; } -static int put_flac_codecpriv(AVFormatContext *s, ByteIOContext *pb, AVCodecContext *codec) -{ - uint8_t *streaminfo; - enum FLACExtradataFormat format; - - if (!ff_flac_is_extradata_valid(codec, &format, &streaminfo)) { - av_log(s, AV_LOG_ERROR, "Invalid FLAC extradata\n"); - return -1; - } - if (format == FLAC_EXTRADATA_FORMAT_STREAMINFO) { - // only the streaminfo packet - put_buffer(pb, "fLaC", 4); - put_byte(pb, 0x80); - put_be24(pb, FLAC_STREAMINFO_SIZE); - } - put_buffer(pb, codec->extradata, codec->extradata_size); - return 0; -} - static void get_aac_sample_rates(AVFormatContext *s, AVCodecContext *codec, int *sample_rate, int *output_sample_rate) { int sri; @@ -481,7 +462,7 @@ static int mkv_write_codecprivate(AVFormatContext *s, ByteIOContext *pb, AVCodec if (codec->codec_id == CODEC_ID_VORBIS || codec->codec_id == CODEC_ID_THEORA) ret = put_xiph_codecpriv(s, dyn_cp, codec); else if (codec->codec_id == CODEC_ID_FLAC) - ret = put_flac_codecpriv(s, dyn_cp, codec); + ret = ff_flac_write_header(dyn_cp, codec); else if (codec->codec_id == CODEC_ID_H264) ret = ff_isom_write_avcc(dyn_cp, codec->extradata, codec->extradata_size); else if (codec->extradata_size) -- 2.7.4