938383e83e1c77e3df800e143770d4a9142ffe1c
[libav.git] / libavformat / flv.h
1 /**
2 * @file flv.h
3 * FLV common header
4 *
5 * Copyright (c) 2006 The FFmpeg Project.
6 *
7 * This file is part of FFmpeg.
8 *
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24 #ifndef FFMPEG_FLV_H
25 #define FFMPEG_FLV_H
26
27 /* offsets for packed values */
28 #define FLV_AUDIO_SAMPLESSIZE_OFFSET 1
29 #define FLV_AUDIO_SAMPLERATE_OFFSET 2
30 #define FLV_AUDIO_CODECID_OFFSET 4
31
32 #define FLV_VIDEO_FRAMETYPE_OFFSET 4
33
34 /* bitmasks to isolate specific values */
35 #define FLV_AUDIO_CHANNEL_MASK 0x01
36 #define FLV_AUDIO_SAMPLESIZE_MASK 0x02
37 #define FLV_AUDIO_SAMPLERATE_MASK 0x0c
38 #define FLV_AUDIO_CODECID_MASK 0xf0
39
40 #define FLV_VIDEO_CODECID_MASK 0x0f
41 #define FLV_VIDEO_FRAMETYPE_MASK 0xf0
42
43 #define AMF_END_OF_OBJECT 0x09
44
45 enum {
46 FLV_HEADER_FLAG_HASVIDEO = 1,
47 FLV_HEADER_FLAG_HASAUDIO = 4,
48 };
49
50 enum {
51 FLV_TAG_TYPE_AUDIO = 0x08,
52 FLV_TAG_TYPE_VIDEO = 0x09,
53 FLV_TAG_TYPE_META = 0x12,
54 };
55
56 enum {
57 FLV_MONO = 0,
58 FLV_STEREO = 1,
59 };
60
61 enum {
62 FLV_SAMPLESSIZE_8BIT = 0,
63 FLV_SAMPLESSIZE_16BIT = 1 << FLV_AUDIO_SAMPLESSIZE_OFFSET,
64 };
65
66 enum {
67 FLV_SAMPLERATE_SPECIAL = 0, /**< signifies 5512Hz and 8000Hz in the case of NELLYMOSER */
68 FLV_SAMPLERATE_11025HZ = 1 << FLV_AUDIO_SAMPLERATE_OFFSET,
69 FLV_SAMPLERATE_22050HZ = 2 << FLV_AUDIO_SAMPLERATE_OFFSET,
70 FLV_SAMPLERATE_44100HZ = 3 << FLV_AUDIO_SAMPLERATE_OFFSET,
71 };
72
73 enum {
74 FLV_CODECID_PCM = 0,
75 FLV_CODECID_ADPCM = 1 << FLV_AUDIO_CODECID_OFFSET,
76 FLV_CODECID_MP3 = 2 << FLV_AUDIO_CODECID_OFFSET,
77 FLV_CODECID_PCM_LE = 3 << FLV_AUDIO_CODECID_OFFSET,
78 FLV_CODECID_NELLYMOSER_8HZ_MONO = 5 << FLV_AUDIO_CODECID_OFFSET,
79 FLV_CODECID_NELLYMOSER = 6 << FLV_AUDIO_CODECID_OFFSET,
80 FLV_CODECID_AAC = 10<< FLV_AUDIO_CODECID_OFFSET,
81 FLV_CODECID_SPEEX = 11<< FLV_AUDIO_CODECID_OFFSET,
82 };
83
84 enum {
85 FLV_CODECID_H263 = 2,
86 FLV_CODECID_SCREEN = 3,
87 FLV_CODECID_VP6 = 4,
88 FLV_CODECID_VP6A = 5,
89 FLV_CODECID_SCREEN2 = 6,
90 FLV_CODECID_H264 = 7,
91 };
92
93 enum {
94 FLV_FRAME_KEY = 1 << FLV_VIDEO_FRAMETYPE_OFFSET,
95 FLV_FRAME_INTER = 2 << FLV_VIDEO_FRAMETYPE_OFFSET,
96 FLV_FRAME_DISP_INTER = 3 << FLV_VIDEO_FRAMETYPE_OFFSET,
97 };
98
99 typedef enum {
100 AMF_DATA_TYPE_NUMBER = 0x00,
101 AMF_DATA_TYPE_BOOL = 0x01,
102 AMF_DATA_TYPE_STRING = 0x02,
103 AMF_DATA_TYPE_OBJECT = 0x03,
104 AMF_DATA_TYPE_NULL = 0x05,
105 AMF_DATA_TYPE_UNDEFINED = 0x06,
106 AMF_DATA_TYPE_REFERENCE = 0x07,
107 AMF_DATA_TYPE_MIXEDARRAY = 0x08,
108 AMF_DATA_TYPE_ARRAY = 0x0a,
109 AMF_DATA_TYPE_DATE = 0x0b,
110 AMF_DATA_TYPE_UNSUPPORTED = 0x0d,
111 } AMFDataType;
112
113 #endif /* FFMPEG_FLV_H */