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libavformat/flv.h

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00001 
00024 #ifndef AVFORMAT_FLV_H
00025 #define AVFORMAT_FLV_H
00026 
00027 /* offsets for packed values */
00028 #define FLV_AUDIO_SAMPLESSIZE_OFFSET 1
00029 #define FLV_AUDIO_SAMPLERATE_OFFSET  2
00030 #define FLV_AUDIO_CODECID_OFFSET     4
00031 
00032 #define FLV_VIDEO_FRAMETYPE_OFFSET   4
00033 
00034 /* bitmasks to isolate specific values */
00035 #define FLV_AUDIO_CHANNEL_MASK    0x01
00036 #define FLV_AUDIO_SAMPLESIZE_MASK 0x02
00037 #define FLV_AUDIO_SAMPLERATE_MASK 0x0c
00038 #define FLV_AUDIO_CODECID_MASK    0xf0
00039 
00040 #define FLV_VIDEO_CODECID_MASK    0x0f
00041 #define FLV_VIDEO_FRAMETYPE_MASK  0xf0
00042 
00043 #define AMF_END_OF_OBJECT         0x09
00044 
00045 #define KEYFRAMES_TAG            "keyframes"
00046 #define KEYFRAMES_TIMESTAMP_TAG  "times"
00047 #define KEYFRAMES_BYTEOFFSET_TAG "filepositions"
00048 
00049 
00050 enum {
00051     FLV_HEADER_FLAG_HASVIDEO = 1,
00052     FLV_HEADER_FLAG_HASAUDIO = 4,
00053 };
00054 
00055 enum {
00056     FLV_TAG_TYPE_AUDIO = 0x08,
00057     FLV_TAG_TYPE_VIDEO = 0x09,
00058     FLV_TAG_TYPE_META  = 0x12,
00059 };
00060 
00061 enum {
00062     FLV_MONO   = 0,
00063     FLV_STEREO = 1,
00064 };
00065 
00066 enum {
00067     FLV_SAMPLESSIZE_8BIT  = 0,
00068     FLV_SAMPLESSIZE_16BIT = 1 << FLV_AUDIO_SAMPLESSIZE_OFFSET,
00069 };
00070 
00071 enum {
00072     FLV_SAMPLERATE_SPECIAL = 0, 
00073     FLV_SAMPLERATE_11025HZ = 1 << FLV_AUDIO_SAMPLERATE_OFFSET,
00074     FLV_SAMPLERATE_22050HZ = 2 << FLV_AUDIO_SAMPLERATE_OFFSET,
00075     FLV_SAMPLERATE_44100HZ = 3 << FLV_AUDIO_SAMPLERATE_OFFSET,
00076 };
00077 
00078 enum {
00079     FLV_CODECID_PCM                  = 0,
00080     FLV_CODECID_ADPCM                = 1 << FLV_AUDIO_CODECID_OFFSET,
00081     FLV_CODECID_MP3                  = 2 << FLV_AUDIO_CODECID_OFFSET,
00082     FLV_CODECID_PCM_LE               = 3 << FLV_AUDIO_CODECID_OFFSET,
00083     FLV_CODECID_NELLYMOSER_16KHZ_MONO = 4 << FLV_AUDIO_CODECID_OFFSET,
00084     FLV_CODECID_NELLYMOSER_8KHZ_MONO = 5 << FLV_AUDIO_CODECID_OFFSET,
00085     FLV_CODECID_NELLYMOSER           = 6 << FLV_AUDIO_CODECID_OFFSET,
00086     FLV_CODECID_AAC                  = 10<< FLV_AUDIO_CODECID_OFFSET,
00087     FLV_CODECID_SPEEX                = 11<< FLV_AUDIO_CODECID_OFFSET,
00088 };
00089 
00090 enum {
00091     FLV_CODECID_H263    = 2,
00092     FLV_CODECID_SCREEN  = 3,
00093     FLV_CODECID_VP6     = 4,
00094     FLV_CODECID_VP6A    = 5,
00095     FLV_CODECID_SCREEN2 = 6,
00096     FLV_CODECID_H264    = 7,
00097 };
00098 
00099 enum {
00100     FLV_FRAME_KEY        = 1 << FLV_VIDEO_FRAMETYPE_OFFSET,
00101     FLV_FRAME_INTER      = 2 << FLV_VIDEO_FRAMETYPE_OFFSET,
00102     FLV_FRAME_DISP_INTER = 3 << FLV_VIDEO_FRAMETYPE_OFFSET,
00103 };
00104 
00105 typedef enum {
00106     AMF_DATA_TYPE_NUMBER      = 0x00,
00107     AMF_DATA_TYPE_BOOL        = 0x01,
00108     AMF_DATA_TYPE_STRING      = 0x02,
00109     AMF_DATA_TYPE_OBJECT      = 0x03,
00110     AMF_DATA_TYPE_NULL        = 0x05,
00111     AMF_DATA_TYPE_UNDEFINED   = 0x06,
00112     AMF_DATA_TYPE_REFERENCE   = 0x07,
00113     AMF_DATA_TYPE_MIXEDARRAY  = 0x08,
00114     AMF_DATA_TYPE_OBJECT_END  = 0x09,
00115     AMF_DATA_TYPE_ARRAY       = 0x0a,
00116     AMF_DATA_TYPE_DATE        = 0x0b,
00117     AMF_DATA_TYPE_LONG_STRING = 0x0c,
00118     AMF_DATA_TYPE_UNSUPPORTED = 0x0d,
00119 } AMFDataType;
00120 
00121 #endif /* AVFORMAT_FLV_H */

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