1/* 2 * FLV common header 3 * 4 * Copyright (c) 2006 The FFmpeg Project 5 * 6 * This file is part of FFmpeg. 7 * 8 * FFmpeg is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public 10 * License as published by the Free Software Foundation; either 11 * version 2.1 of the License, or (at your option) any later version. 12 * 13 * FFmpeg is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with FFmpeg; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23/** 24 * @file 25 * FLV common header 26 */ 27 28#ifndef AVFORMAT_FLV_H 29#define AVFORMAT_FLV_H 30 31/* offsets for packed values */ 32#define FLV_AUDIO_SAMPLESSIZE_OFFSET 1 33#define FLV_AUDIO_SAMPLERATE_OFFSET 2 34#define FLV_AUDIO_CODECID_OFFSET 4 35 36#define FLV_VIDEO_FRAMETYPE_OFFSET 4 37 38/* bitmasks to isolate specific values */ 39#define FLV_AUDIO_CHANNEL_MASK 0x01 40#define FLV_AUDIO_SAMPLESIZE_MASK 0x02 41#define FLV_AUDIO_SAMPLERATE_MASK 0x0c 42#define FLV_AUDIO_CODECID_MASK 0xf0 43 44#define FLV_VIDEO_CODECID_MASK 0x0f 45#define FLV_VIDEO_FRAMETYPE_MASK 0xf0 46 47#define AMF_END_OF_OBJECT 0x09 48 49#define KEYFRAMES_TAG "keyframes" 50#define KEYFRAMES_TIMESTAMP_TAG "times" 51#define KEYFRAMES_BYTEOFFSET_TAG "filepositions" 52 53 54enum { 55 FLV_HEADER_FLAG_HASVIDEO = 1, 56 FLV_HEADER_FLAG_HASAUDIO = 4, 57}; 58 59enum { 60 FLV_TAG_TYPE_AUDIO = 0x08, 61 FLV_TAG_TYPE_VIDEO = 0x09, 62 FLV_TAG_TYPE_META = 0x12, 63}; 64 65enum { 66 FLV_STREAM_TYPE_VIDEO, 67 FLV_STREAM_TYPE_AUDIO, 68 FLV_STREAM_TYPE_DATA, 69 FLV_STREAM_TYPE_NB, 70}; 71 72enum { 73 FLV_MONO = 0, 74 FLV_STEREO = 1, 75}; 76 77enum { 78 FLV_SAMPLESSIZE_8BIT = 0, 79 FLV_SAMPLESSIZE_16BIT = 1 << FLV_AUDIO_SAMPLESSIZE_OFFSET, 80}; 81 82enum { 83 FLV_SAMPLERATE_SPECIAL = 0, /**< signifies 5512Hz and 8000Hz in the case of NELLYMOSER */ 84 FLV_SAMPLERATE_11025HZ = 1 << FLV_AUDIO_SAMPLERATE_OFFSET, 85 FLV_SAMPLERATE_22050HZ = 2 << FLV_AUDIO_SAMPLERATE_OFFSET, 86 FLV_SAMPLERATE_44100HZ = 3 << FLV_AUDIO_SAMPLERATE_OFFSET, 87}; 88 89enum { 90 FLV_CODECID_PCM = 0, 91 FLV_CODECID_ADPCM = 1 << FLV_AUDIO_CODECID_OFFSET, 92 FLV_CODECID_MP3 = 2 << FLV_AUDIO_CODECID_OFFSET, 93 FLV_CODECID_PCM_LE = 3 << FLV_AUDIO_CODECID_OFFSET, 94 FLV_CODECID_NELLYMOSER_16KHZ_MONO = 4 << FLV_AUDIO_CODECID_OFFSET, 95 FLV_CODECID_NELLYMOSER_8KHZ_MONO = 5 << FLV_AUDIO_CODECID_OFFSET, 96 FLV_CODECID_NELLYMOSER = 6 << FLV_AUDIO_CODECID_OFFSET, 97 FLV_CODECID_PCM_ALAW = 7 << FLV_AUDIO_CODECID_OFFSET, 98 FLV_CODECID_PCM_MULAW = 8 << FLV_AUDIO_CODECID_OFFSET, 99 FLV_CODECID_AAC = 10<< FLV_AUDIO_CODECID_OFFSET, 100 FLV_CODECID_SPEEX = 11<< FLV_AUDIO_CODECID_OFFSET, 101}; 102 103enum { 104 FLV_CODECID_H263 = 2, 105 FLV_CODECID_SCREEN = 3, 106 FLV_CODECID_VP6 = 4, 107 FLV_CODECID_VP6A = 5, 108 FLV_CODECID_SCREEN2 = 6, 109 FLV_CODECID_H264 = 7, 110 FLV_CODECID_REALH263= 8, 111 FLV_CODECID_MPEG4 = 9, 112}; 113 114enum { 115 FLV_FRAME_KEY = 1 << FLV_VIDEO_FRAMETYPE_OFFSET, ///< key frame (for AVC, a seekable frame) 116 FLV_FRAME_INTER = 2 << FLV_VIDEO_FRAMETYPE_OFFSET, ///< inter frame (for AVC, a non-seekable frame) 117 FLV_FRAME_DISP_INTER = 3 << FLV_VIDEO_FRAMETYPE_OFFSET, ///< disposable inter frame (H.263 only) 118 FLV_FRAME_GENERATED_KEY = 4 << FLV_VIDEO_FRAMETYPE_OFFSET, ///< generated key frame (reserved for server use only) 119 FLV_FRAME_VIDEO_INFO_CMD = 5 << FLV_VIDEO_FRAMETYPE_OFFSET, ///< video info/command frame 120}; 121 122typedef enum { 123 AMF_DATA_TYPE_NUMBER = 0x00, 124 AMF_DATA_TYPE_BOOL = 0x01, 125 AMF_DATA_TYPE_STRING = 0x02, 126 AMF_DATA_TYPE_OBJECT = 0x03, 127 AMF_DATA_TYPE_NULL = 0x05, 128 AMF_DATA_TYPE_UNDEFINED = 0x06, 129 AMF_DATA_TYPE_REFERENCE = 0x07, 130 AMF_DATA_TYPE_MIXEDARRAY = 0x08, 131 AMF_DATA_TYPE_OBJECT_END = 0x09, 132 AMF_DATA_TYPE_ARRAY = 0x0a, 133 AMF_DATA_TYPE_DATE = 0x0b, 134 AMF_DATA_TYPE_LONG_STRING = 0x0c, 135 AMF_DATA_TYPE_UNSUPPORTED = 0x0d, 136} AMFDataType; 137 138#endif /* AVFORMAT_FLV_H */ 139