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- /*
- * 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
- */
- #include "libavcodec/flac.h"
- #include "libavcodec/bytestream.h"
- #include "avformat.h"
- #include "flacenc.h"
- int ff_flac_write_header(AVIOContext *pb, AVCodecContext *codec,
- int last_block)
- {
- uint8_t header[8] = {
- 0x66, 0x4C, 0x61, 0x43, 0x00, 0x00, 0x00, 0x22
- };
- uint8_t *streaminfo;
- enum FLACExtradataFormat format;
- header[4] = last_block ? 0x80 : 0x00;
- if (!ff_flac_is_extradata_valid(codec, &format, &streaminfo))
- return -1;
- /* write "fLaC" stream marker and first metadata block header if needed */
- if (format == FLAC_EXTRADATA_FORMAT_STREAMINFO) {
- avio_write(pb, header, 8);
- }
- /* write STREAMINFO or full header */
- avio_write(pb, codec->extradata, codec->extradata_size);
- return 0;
- }
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