3 * Copyright (C) 2009 Justin Ruggles
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavcodec/flac.h"
23 #include "libavcodec/bytestream.h"
27 int ff_flac_write_header(ByteIOContext *pb, AVCodecContext *codec,
31 0x66, 0x4C, 0x61, 0x43, 0x00, 0x00, 0x00, 0x22
34 enum FLACExtradataFormat format;
36 header[4] = last_block ? 0x80 : 0x00;
37 if (!ff_flac_is_extradata_valid(codec, &format, &streaminfo))
40 /* write "fLaC" stream marker and first metadata block header if needed */
41 if (format == FLAC_EXTRADATA_FORMAT_STREAMINFO) {
42 put_buffer(pb, header, 8);
45 /* write STREAMINFO or full header */
46 put_buffer(pb, codec->extradata, codec->extradata_size);