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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 */ |