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libavformat
flacenc_header.c
Go to the documentation of this file.
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/*
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* raw FLAC muxer
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* Copyright (C) 2009 Justin Ruggles
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "
libavcodec/flac.h
"
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#include "
libavcodec/bytestream.h
"
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#include "
avformat.h
"
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#include "
flacenc.h
"
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int
ff_flac_write_header
(
AVIOContext
*pb,
AVCodecContext
*codec,
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int
last_block)
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{
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uint8_t
header[8] = {
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0x66, 0x4C, 0x61, 0x43, 0x00, 0x00, 0x00, 0x22
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};
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uint8_t
*streaminfo;
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enum
FLACExtradataFormat
format;
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header[4] = last_block ? 0x80 : 0x00;
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if
(!
avpriv_flac_is_extradata_valid
(codec, &format, &streaminfo))
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return
-1;
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/* write "fLaC" stream marker and first metadata block header */
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avio_write
(pb, header, 8);
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/* write STREAMINFO */
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avio_write
(pb, streaminfo,
FLAC_STREAMINFO_SIZE
);
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return
0;
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}
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