blob: db9468f4691d259608160bbba0639ac25fd738c3
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 | |
54 | enum { |
55 | FLV_HEADER_FLAG_HASVIDEO = 1, |
56 | FLV_HEADER_FLAG_HASAUDIO = 4, |
57 | }; |
58 | |
59 | enum { |
60 | FLV_TAG_TYPE_AUDIO = 0x08, |
61 | FLV_TAG_TYPE_VIDEO = 0x09, |
62 | FLV_TAG_TYPE_META = 0x12, |
63 | }; |
64 | |
65 | enum { |
66 | FLV_STREAM_TYPE_VIDEO, |
67 | FLV_STREAM_TYPE_AUDIO, |
68 | FLV_STREAM_TYPE_DATA, |
69 | FLV_STREAM_TYPE_NB, |
70 | }; |
71 | |
72 | enum { |
73 | FLV_MONO = 0, |
74 | FLV_STEREO = 1, |
75 | }; |
76 | |
77 | enum { |
78 | FLV_SAMPLESSIZE_8BIT = 0, |
79 | FLV_SAMPLESSIZE_16BIT = 1 << FLV_AUDIO_SAMPLESSIZE_OFFSET, |
80 | }; |
81 | |
82 | enum { |
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 | |
89 | enum { |
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 | |
103 | enum { |
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 | |
114 | enum { |
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 | |
122 | typedef 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 |