repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * raw FLAC muxer | |
| 3 | * Copyright (C) 2009 Justin Ruggles | |
| 4 | * | |
| 5 | * This file is part of FFmpeg. | |
| 6 | * | |
| 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. | |
| 11 | * | |
| 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. | |
| 16 | * | |
| 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 | |
| 20 | */ | |
| 21 | ||
| 22 | #include "libavutil/channel_layout.h" | |
| 23 | ||
| 24 | #include "libavcodec/flac.h" | |
| 25 | ||
| 26 | #include "avformat.h" | |
| 27 | #include "flacenc.h" | |
| 28 | ||
| 29 | int ff_flac_write_header(AVIOContext *pb, uint8_t *extradata, | |
| 30 | int extradata_size, int last_block) | |
| 31 | { | |
| 32 | uint8_t header[8] = { | |
| 33 | 0x66, 0x4C, 0x61, 0x43, 0x00, 0x00, 0x00, 0x22 | |
| 34 | }; | |
| 35 | ||
| 36 | header[4] = last_block ? 0x80 : 0x00; | |
| 37 | ||
| 38 | if (extradata_size < FLAC_STREAMINFO_SIZE) | |
| 39 | return AVERROR_INVALIDDATA; | |
| 40 | ||
| 41 | /* write "fLaC" stream marker and first metadata block header */ | |
| 42 | avio_write(pb, header, 8); | |
| 43 | ||
| 44 | /* write STREAMINFO */ | |
| 45 | avio_write(pb, extradata, FLAC_STREAMINFO_SIZE); | |
| 46 | ||
| 47 | return 0; | |
| 48 | } | |
| 49 | ||
| 50 | int ff_flac_is_native_layout(uint64_t channel_layout) | |
| 51 | { | |
| 52 | if (channel_layout == AV_CH_LAYOUT_MONO || | |
| 53 | channel_layout == AV_CH_LAYOUT_STEREO || | |
| 54 | channel_layout == AV_CH_LAYOUT_SURROUND || | |
| 55 | channel_layout == AV_CH_LAYOUT_QUAD || | |
| 56 | channel_layout == AV_CH_LAYOUT_5POINT0 || | |
| 57 | channel_layout == AV_CH_LAYOUT_5POINT1 || | |
| 58 | channel_layout == AV_CH_LAYOUT_6POINT1 || | |
| 59 | channel_layout == AV_CH_LAYOUT_7POINT1) | |
| 60 | return 1; | |
| 61 | return 0; | |
| 62 | } |