Cinelerra: hvirtual/quicktime/ffmpeg/libavcodec/mpeg4data.h Source File

00001 
00006 // shapes
00007 #define RECT_SHAPE       0
00008 #define BIN_SHAPE        1
00009 #define BIN_ONLY_SHAPE   2
00010 #define GRAY_SHAPE       3
00011 
00012 #define SIMPLE_VO_TYPE             1
00013 #define CORE_VO_TYPE               3
00014 #define MAIN_VO_TYPE               4
00015 #define NBIT_VO_TYPE               5
00016 #define ARTS_VO_TYPE               10
00017 #define ACE_VO_TYPE                12
00018 #define ADV_SIMPLE_VO_TYPE         17
00019 
00020 // aspect_ratio_info
00021 #define EXTENDED_PAR 15
00022 
00023 //vol_sprite_usage / sprite_enable
00024 #define STATIC_SPRITE 1
00025 #define GMC_SPRITE 2
00026 
00027 #define MOTION_MARKER 0x1F001
00028 #define DC_MARKER     0x6B001
00029 
00030 static const int mb_type_b_map[4]= {
00031     MB_TYPE_DIRECT2 | MB_TYPE_L0L1,
00032     MB_TYPE_L0L1 | MB_TYPE_16x16,
00033     MB_TYPE_L1 | MB_TYPE_16x16,
00034     MB_TYPE_L0 | MB_TYPE_16x16,
00035 };
00036 
00037 #define VOS_STARTCODE        0x1B0
00038 #define USER_DATA_STARTCODE  0x1B2
00039 #define GOP_STARTCODE        0x1B3
00040 #define VISUAL_OBJ_STARTCODE 0x1B5
00041 #define VOP_STARTCODE        0x1B6
00042 
00043 /* dc encoding for mpeg4 */
00044 const uint8_t DCtab_lum[13][2] =
00045 {
00046     {3,3}, {3,2}, {2,2}, {2,3}, {1,3}, {1,4}, {1,5}, {1,6}, {1,7},
00047     {1,8}, {1,9}, {1,10}, {1,11},
00048 }; 
00049 
00050 const uint8_t DCtab_chrom[13][2] =
00051 {
00052     {3,2}, {2,2}, {1,2}, {1,3}, {1,4}, {1,5}, {1,6}, {1,7}, {1,8},
00053     {1,9}, {1,10}, {1,11}, {1,12},
00054 }; 
00055 
00056 const uint16_t intra_vlc[103][2] = {
00057 { 0x2, 2 },
00058 { 0x6, 3 },{ 0xf, 4 },{ 0xd, 5 },{ 0xc, 5 },
00059 { 0x15, 6 },{ 0x13, 6 },{ 0x12, 6 },{ 0x17, 7 },
00060 { 0x1f, 8 },{ 0x1e, 8 },{ 0x1d, 8 },{ 0x25, 9 },
00061 { 0x24, 9 },{ 0x23, 9 },{ 0x21, 9 },{ 0x21, 10 },
00062 { 0x20, 10 },{ 0xf, 10 },{ 0xe, 10 },{ 0x7, 11 },
00063 { 0x6, 11 },{ 0x20, 11 },{ 0x21, 11 },{ 0x50, 12 },
00064 { 0x51, 12 },{ 0x52, 12 },{ 0xe, 4 },{ 0x14, 6 },
00065 { 0x16, 7 },{ 0x1c, 8 },{ 0x20, 9 },{ 0x1f, 9 },
00066 { 0xd, 10 },{ 0x22, 11 },{ 0x53, 12 },{ 0x55, 12 },
00067 { 0xb, 5 },{ 0x15, 7 },{ 0x1e, 9 },{ 0xc, 10 },
00068 { 0x56, 12 },{ 0x11, 6 },{ 0x1b, 8 },{ 0x1d, 9 },
00069 { 0xb, 10 },{ 0x10, 6 },{ 0x22, 9 },{ 0xa, 10 },
00070 { 0xd, 6 },{ 0x1c, 9 },{ 0x8, 10 },{ 0x12, 7 },
00071 { 0x1b, 9 },{ 0x54, 12 },{ 0x14, 7 },{ 0x1a, 9 },
00072 { 0x57, 12 },{ 0x19, 8 },{ 0x9, 10 },{ 0x18, 8 },
00073 { 0x23, 11 },{ 0x17, 8 },{ 0x19, 9 },{ 0x18, 9 },
00074 { 0x7, 10 },{ 0x58, 12 },{ 0x7, 4 },{ 0xc, 6 },
00075 { 0x16, 8 },{ 0x17, 9 },{ 0x6, 10 },{ 0x5, 11 },
00076 { 0x4, 11 },{ 0x59, 12 },{ 0xf, 6 },{ 0x16, 9 },
00077 { 0x5, 10 },{ 0xe, 6 },{ 0x4, 10 },{ 0x11, 7 },
00078 { 0x24, 11 },{ 0x10, 7 },{ 0x25, 11 },{ 0x13, 7 },
00079 { 0x5a, 12 },{ 0x15, 8 },{ 0x5b, 12 },{ 0x14, 8 },
00080 { 0x13, 8 },{ 0x1a, 8 },{ 0x15, 9 },{ 0x14, 9 },
00081 { 0x13, 9 },{ 0x12, 9 },{ 0x11, 9 },{ 0x26, 11 },
00082 { 0x27, 11 },{ 0x5c, 12 },{ 0x5d, 12 },{ 0x5e, 12 },
00083 { 0x5f, 12 },{ 0x3, 7 },
00084 };
00085 
00086 const int8_t intra_level[102] = {
00087   1,  2,  3,  4,  5,  6,  7,  8,
00088   9, 10, 11, 12, 13, 14, 15, 16,
00089  17, 18, 19, 20, 21, 22, 23, 24,
00090  25, 26, 27,  1,  2,  3,  4,  5,
00091   6,  7,  8,  9, 10,  1,  2,  3,
00092   4,  5,  1,  2,  3,  4,  1,  2,
00093   3,  1,  2,  3,  1,  2,  3,  1,
00094   2,  3,  1,  2,  1,  2,  1,  1,
00095   1,  1,  1,  1,  2,  3,  4,  5,
00096   6,  7,  8,  1,  2,  3,  1,  2,
00097   1,  2,  1,  2,  1,  2,  1,  2,
00098   1,  1,  1,  1,  1,  1,  1,  1,
00099   1,  1,  1,  1,  1,  1,
00100 };
00101 
00102 const int8_t intra_run[102] = {
00103   0,  0,  0,  0,  0,  0,  0,  0,
00104   0,  0,  0,  0,  0,  0,  0,  0,
00105   0,  0,  0,  0,  0,  0,  0,  0,
00106   0,  0,  0,  1,  1,  1,  1,  1,
00107   1,  1,  1,  1,  1,  2,  2,  2,
00108   2,  2,  3,  3,  3,  3,  4,  4,
00109   4,  5,  5,  5,  6,  6,  6,  7,
00110   7,  7,  8,  8,  9,  9, 10, 11,
00111  12, 13, 14,  0,  0,  0,  0,  0,
00112   0,  0,  0,  1,  1,  1,  2,  2,
00113   3,  3,  4,  4,  5,  5,  6,  6,
00114   7,  8,  9, 10, 11, 12, 13, 14,
00115  15, 16, 17, 18, 19, 20,
00116 };
00117 
00118 static RLTable rl_intra = {
00119     102,
00120     67,
00121     intra_vlc,
00122     intra_run,
00123     intra_level,
00124 };
00125 
00126 static const uint16_t inter_rvlc[170][2]={ //note this is identical to the intra rvlc except that its reordered
00127 {0x0006,  3},{0x0001,  4},{0x0004,  5},{0x001C,  7},
00128 {0x003C,  8},{0x003D,  8},{0x007C,  9},{0x00FC, 10},
00129 {0x00FD, 10},{0x01FC, 11},{0x01FD, 11},{0x03FC, 12},
00130 {0x07FC, 13},{0x07FD, 13},{0x0BFC, 13},{0x0BFD, 13},
00131 {0x0FFC, 14},{0x0FFD, 14},{0x1FFC, 15},{0x0007,  3},
00132 {0x000C,  6},{0x005C,  8},{0x007D,  9},{0x017C, 10},
00133 {0x02FC, 11},{0x03FD, 12},{0x0DFC, 13},{0x17FC, 14},
00134 {0x17FD, 14},{0x000A,  4},{0x001D,  7},{0x00BC,  9},
00135 {0x02FD, 11},{0x05FC, 12},{0x1BFC, 14},{0x1BFD, 14},
00136 {0x0005,  5},{0x005D,  8},{0x017D, 10},{0x05FD, 12},
00137 {0x0DFD, 13},{0x1DFC, 14},{0x1FFD, 15},{0x0008,  5},
00138 {0x006C,  8},{0x037C, 11},{0x0EFC, 13},{0x2FFC, 15},
00139 {0x0009,  5},{0x00BD,  9},{0x037D, 11},{0x0EFD, 13},
00140 {0x000D,  6},{0x01BC, 10},{0x06FC, 12},{0x1DFD, 14},
00141 {0x0014,  6},{0x01BD, 10},{0x06FD, 12},{0x2FFD, 15},
00142 {0x0015,  6},{0x01DC, 10},{0x0F7C, 13},{0x002C,  7},
00143 {0x01DD, 10},{0x1EFC, 14},{0x002D,  7},{0x03BC, 11},
00144 {0x0034,  7},{0x077C, 12},{0x006D,  8},{0x0F7D, 13},
00145 {0x0074,  8},{0x1EFD, 14},{0x0075,  8},{0x1F7C, 14},
00146 {0x00DC,  9},{0x1F7D, 14},{0x00DD,  9},{0x1FBC, 14},
00147 {0x00EC,  9},{0x37FC, 15},{0x01EC, 10},{0x01ED, 10},
00148 {0x01F4, 10},{0x03BD, 11},{0x03DC, 11},{0x03DD, 11},
00149 {0x03EC, 11},{0x03ED, 11},{0x03F4, 11},{0x077D, 12},
00150 {0x07BC, 12},{0x07BD, 12},{0x0FBC, 13},{0x0FBD, 13},
00151 {0x0FDC, 13},{0x0FDD, 13},{0x1FBD, 14},{0x1FDC, 14},
00152 {0x1FDD, 14},{0x37FD, 15},{0x3BFC, 15},
00153 {0x000B,  4},{0x0078,  8},{0x03F5, 11},{0x0FEC, 13},
00154 {0x1FEC, 14},{0x0012,  5},{0x00ED,  9},{0x07DC, 12},
00155 {0x1FED, 14},{0x3BFD, 15},{0x0013,  5},{0x03F8, 11},
00156 {0x3DFC, 15},{0x0018,  6},{0x07DD, 12},{0x0019,  6},
00157 {0x07EC, 12},{0x0022,  6},{0x0FED, 13},{0x0023,  6},
00158 {0x0FF4, 13},{0x0035,  7},{0x0FF5, 13},{0x0038,  7},
00159 {0x0FF8, 13},{0x0039,  7},{0x0FF9, 13},{0x0042,  7},
00160 {0x1FF4, 14},{0x0043,  7},{0x1FF5, 14},{0x0079,  8},
00161 {0x1FF8, 14},{0x0082,  8},{0x3DFD, 15},{0x0083,  8},
00162 {0x00F4,  9},{0x00F5,  9},{0x00F8,  9},{0x00F9,  9},
00163 {0x0102,  9},{0x0103,  9},{0x01F5, 10},{0x01F8, 10},
00164 {0x01F9, 10},{0x0202, 10},{0x0203, 10},{0x03F9, 11},
00165 {0x0402, 11},{0x0403, 11},{0x07ED, 12},{0x07F4, 12},
00166 {0x07F5, 12},{0x07F8, 12},{0x07F9, 12},{0x0802, 12},
00167 {0x0803, 12},{0x1002, 13},{0x1003, 13},{0x1FF9, 14},
00168 {0x2002, 14},{0x2003, 14},{0x3EFC, 15},{0x3EFD, 15},
00169 {0x3F7C, 15},{0x3F7D, 15},{0x0000, 4}
00170 };
00171 
00172 static const uint8_t inter_rvlc_run[169]={
00173  0,  0,  0,  0,  0,  0,  0,  0, 
00174  0,  0,  0,  0,  0,  0,  0,  0, 
00175  0,  0,  0,  1,  1,  1,  1,  1, 
00176  1,  1,  1,  1,  1,  2,  2,  2, 
00177  2,  2,  2,  2,  3,  3,  3,  3, 
00178  3,  3,  3,  4,  4,  4,  4,  4, 
00179  5,  5,  5,  5,  6,  6,  6,  6, 
00180  7,  7,  7,  7,  8,  8,  8,  9, 
00181  9,  9, 10, 10, 11, 11, 12, 12, 
00182 13, 13, 14, 14, 15, 15, 16, 16, 
00183 17, 17, 18, 19, 20, 21, 22, 23, 
00184 24, 25, 26, 27, 28, 29, 30, 31, 
00185 32, 33, 34, 35, 36, 37, 38, 
00186  0,  0,  0,  0,  0,  1,  1,  1, 
00187  1,  1,  2,  2,  2,  3,  3,  4, 
00188  4,  5,  5,  6,  6,  7,  7,  8, 
00189  8,  9,  9, 10, 10, 11, 11, 12, 
00190 12, 13, 13, 14, 15, 16, 17, 18, 
00191 19, 20, 21, 22, 23, 24, 25, 26, 
00192 27, 28, 29, 30, 31, 32, 33, 34, 
00193 35, 36, 37, 38, 39, 40, 41, 42, 
00194 43, 44,  
00195 };
00196 
00197 static const uint8_t inter_rvlc_level[169]={
00198  1,  2,  3,  4,  5,  6,  7,  8, 
00199  9, 10, 11, 12, 13, 14, 15, 16, 
00200 17, 18, 19,  1,  2,  3,  4,  5, 
00201  6,  7,  8,  9, 10,  1,  2,  3, 
00202  4,  5,  6,  7,  1,  2,  3,  4, 
00203  5,  6,  7,  1,  2,  3,  4,  5, 
00204  1,  2,  3,  4,  1,  2,  3,  4, 
00205  1,  2,  3,  4,  1,  2,  3,  1, 
00206  2,  3,  1,  2,  1,  2,  1,  2, 
00207  1,  2,  1,  2,  1,  2,  1,  2, 
00208  1,  2,  1,  1,  1,  1,  1,  1, 
00209  1,  1,  1,  1,  1,  1,  1,  1, 
00210  1,  1,  1,  1,  1,  1,  1, 
00211  1,  2,  3,  4,  5,  1,  2,  3, 
00212  4,  5,  1,  2,  3,  1,  2,  1, 
00213  2,  1,  2,  1,  2,  1,  2,  1, 
00214  2,  1,  2,  1,  2,  1,  2,  1, 
00215  2,  1,  2,  1,  1,  1,  1,  1, 
00216  1,  1,  1,  1,  1,  1,  1,  1, 
00217  1,  1,  1,  1,  1,  1,  1,  1, 
00218  1,  1,  1,  1,  1,  1,  1,  1, 
00219  1,  1, 
00220 };
00221 
00222 static RLTable rvlc_rl_inter = {
00223     169,
00224     103,
00225     inter_rvlc,
00226     inter_rvlc_run,
00227     inter_rvlc_level,
00228 };
00229 
00230 static const uint16_t intra_rvlc[170][2]={
00231 {0x0006,  3},{0x0007,  3},{0x000A,  4},{0x0009,  5},
00232 {0x0014,  6},{0x0015,  6},{0x0034,  7},{0x0074,  8},
00233 {0x0075,  8},{0x00DD,  9},{0x00EC,  9},{0x01EC, 10},
00234 {0x01ED, 10},{0x01F4, 10},{0x03EC, 11},{0x03ED, 11},
00235 {0x03F4, 11},{0x077D, 12},{0x07BC, 12},{0x0FBD, 13},
00236 {0x0FDC, 13},{0x07BD, 12},{0x0FDD, 13},{0x1FBD, 14},
00237 {0x1FDC, 14},{0x1FDD, 14},{0x1FFC, 15},{0x0001,  4},
00238 {0x0008,  5},{0x002D,  7},{0x006C,  8},{0x006D,  8},
00239 {0x00DC,  9},{0x01DD, 10},{0x03DC, 11},{0x03DD, 11},
00240 {0x077C, 12},{0x0FBC, 13},{0x1F7D, 14},{0x1FBC, 14},
00241 {0x0004,  5},{0x002C,  7},{0x00BC,  9},{0x01DC, 10},
00242 {0x03BC, 11},{0x03BD, 11},{0x0EFD, 13},{0x0F7C, 13},
00243 {0x0F7D, 13},{0x1EFD, 14},{0x1F7C, 14},{0x0005,  5},
00244 {0x005C,  8},{0x00BD,  9},{0x037D, 11},{0x06FC, 12},
00245 {0x0EFC, 13},{0x1DFD, 14},{0x1EFC, 14},{0x1FFD, 15},
00246 {0x000C,  6},{0x005D,  8},{0x01BD, 10},{0x03FD, 12},
00247 {0x06FD, 12},{0x1BFD, 14},{0x000D,  6},{0x007D,  9},
00248 {0x02FC, 11},{0x05FC, 12},{0x1BFC, 14},{0x1DFC, 14},
00249 {0x001C,  7},{0x017C, 10},{0x02FD, 11},{0x05FD, 12},
00250 {0x2FFC, 15},{0x001D,  7},{0x017D, 10},{0x037C, 11},
00251 {0x0DFD, 13},{0x2FFD, 15},{0x003C,  8},{0x01BC, 10},
00252 {0x0BFD, 13},{0x17FD, 14},{0x003D,  8},{0x01FD, 11},
00253 {0x0DFC, 13},{0x37FC, 15},{0x007C,  9},{0x03FC, 12},
00254 {0x00FC, 10},{0x0BFC, 13},{0x00FD, 10},{0x37FD, 15},
00255 {0x01FC, 11},{0x07FC, 13},{0x07FD, 13},{0x0FFC, 14},
00256 {0x0FFD, 14},{0x17FC, 14},{0x3BFC, 15},
00257 {0x000B,  4},{0x0078,  8},{0x03F5, 11},{0x0FEC, 13},
00258 {0x1FEC, 14},{0x0012,  5},{0x00ED,  9},{0x07DC, 12},
00259 {0x1FED, 14},{0x3BFD, 15},{0x0013,  5},{0x03F8, 11},
00260 {0x3DFC, 15},{0x0018,  6},{0x07DD, 12},{0x0019,  6},
00261 {0x07EC, 12},{0x0022,  6},{0x0FED, 13},{0x0023,  6},
00262 {0x0FF4, 13},{0x0035,  7},{0x0FF5, 13},{0x0038,  7},
00263 {0x0FF8, 13},{0x0039,  7},{0x0FF9, 13},{0x0042,  7},
00264 {0x1FF4, 14},{0x0043,  7},{0x1FF5, 14},{0x0079,  8},
00265 {0x1FF8, 14},{0x0082,  8},{0x3DFD, 15},{0x0083,  8},
00266 {0x00F4,  9},{0x00F5,  9},{0x00F8,  9},{0x00F9,  9},
00267 {0x0102,  9},{0x0103,  9},{0x01F5, 10},{0x01F8, 10},
00268 {0x01F9, 10},{0x0202, 10},{0x0203, 10},{0x03F9, 11},
00269 {0x0402, 11},{0x0403, 11},{0x07ED, 12},{0x07F4, 12},
00270 {0x07F5, 12},{0x07F8, 12},{0x07F9, 12},{0x0802, 12},
00271 {0x0803, 12},{0x1002, 13},{0x1003, 13},{0x1FF9, 14},
00272 {0x2002, 14},{0x2003, 14},{0x3EFC, 15},{0x3EFD, 15},
00273 {0x3F7C, 15},{0x3F7D, 15},{0x0000,  4}
00274 };
00275 
00276 static const uint8_t intra_rvlc_run[169]={
00277  0,  0,  0,  0,  0,  0,  0,  0, 
00278  0,  0,  0,  0,  0,  0,  0,  0, 
00279  0,  0,  0,  0,  0,  0,  0,  0, 
00280  0,  0,  0,  1,  1,  1,  1,  1, 
00281  1,  1,  1,  1,  1,  1,  1,  1, 
00282  2,  2,  2,  2,  2,  2,  2,  2, 
00283  2,  2,  2,  3,  3,  3,  3,  3, 
00284  3,  3,  3,  3,  4,  4,  4,  4, 
00285  4,  4,  5,  5,  5,  5,  5,  5, 
00286  6,  6,  6,  6,  6,  7,  7,  7, 
00287  7,  7,  8,  8,  8,  8,  9,  9, 
00288  9,  9, 10, 10, 11, 11, 12, 12, 
00289 13, 14, 15, 16, 17, 18, 19, 
00290  0,  0,  0,  0,  0,  1,  1,  1, 
00291  1,  1,  2,  2,  2,  3,  3,  4, 
00292  4,  5,  5,  6,  6,  7,  7,  8, 
00293  8,  9,  9, 10, 10, 11, 11, 12, 
00294 12, 13, 13, 14, 15, 16, 17, 18, 
00295 19, 20, 21, 22, 23, 24, 25, 26, 
00296 27, 28, 29, 30, 31, 32, 33, 34, 
00297 35, 36, 37, 38, 39, 40, 41, 42, 
00298 43, 44, 
00299 };
00300 
00301 static const uint8_t intra_rvlc_level[169]={
00302  1,  2,  3,  4,  5,  6,  7,  8, 
00303  9, 10, 11, 12, 13, 14, 15, 16, 
00304 17, 18, 19, 20, 21, 22, 23, 24, 
00305 25, 26, 27,  1,  2,  3,  4,  5, 
00306  6,  7,  8,  9, 10, 11, 12, 13, 
00307  1,  2,  3,  4,  5,  6,  7,  8, 
00308  9, 10, 11,  1,  2,  3,  4,  5, 
00309  6,  7,  8,  9,  1,  2,  3,  4, 
00310  5,  6,  1,  2,  3,  4,  5,  6, 
00311  1,  2,  3,  4,  5,  1,  2,  3, 
00312  4,  5,  1,  2,  3,  4,  1,  2, 
00313  3,  4,  1,  2,  1,  2,  1,  2, 
00314  1,  1,  1,  1,  1,  1,  1,  
00315  1,  2,  3,  4,  5,  1,  2,  3, 
00316  4,  5,  1,  2,  3,  1,  2,  1, 
00317  2,  1,  2,  1,  2,  1,  2,  1, 
00318  2,  1,  2,  1,  2,  1,  2,  1, 
00319  2,  1,  2,  1,  1,  1,  1,  1, 
00320  1,  1,  1,  1,  1,  1,  1,  1, 
00321  1,  1,  1,  1,  1,  1,  1,  1, 
00322  1,  1,  1,  1,  1,  1,  1,  1, 
00323  1,  1, 
00324 };
00325 
00326 static RLTable rvlc_rl_intra = {
00327     169,
00328     103,
00329     intra_rvlc,
00330     intra_rvlc_run,
00331     intra_rvlc_level,
00332 };
00333 
00334 static const uint16_t sprite_trajectory_tab[15][2] = {
00335  {0x00, 2}, {0x02, 3},  {0x03, 3},  {0x04, 3}, {0x05, 3}, {0x06, 3},
00336  {0x0E, 4}, {0x1E, 5},  {0x3E, 6},  {0x7E, 7}, {0xFE, 8}, 
00337  {0x1FE, 9},{0x3FE, 10},{0x7FE, 11},{0xFFE, 12},
00338 };
00339 
00340 static const uint8_t mb_type_b_tab[4][2] = {
00341  {1, 1}, {1, 2}, {1, 3}, {1, 4},
00342 };
00343 
00344 static const AVRational pixel_aspect[16]={
00345  {0, 1},
00346  {1, 1},
00347  {12, 11},
00348  {10, 11},
00349  {16, 11},
00350  {40, 33},
00351  {0, 1},
00352  {0, 1},
00353  {0, 1},
00354  {0, 1},
00355  {0, 1},
00356  {0, 1},
00357  {0, 1},
00358  {0, 1},
00359  {0, 1},
00360  {0, 1},
00361 };
00362 
00363 /* these matrixes will be permuted for the idct */
00364 const int16_t ff_mpeg4_default_intra_matrix[64] = {
00365   8, 17, 18, 19, 21, 23, 25, 27,
00366  17, 18, 19, 21, 23, 25, 27, 28,
00367  20, 21, 22, 23, 24, 26, 28, 30,
00368  21, 22, 23, 24, 26, 28, 30, 32,
00369  22, 23, 24, 26, 28, 30, 32, 35,
00370  23, 24, 26, 28, 30, 32, 35, 38,
00371  25, 26, 28, 30, 32, 35, 38, 41,
00372  27, 28, 30, 32, 35, 38, 41, 45, 
00373 };
00374 
00375 const int16_t ff_mpeg4_default_non_intra_matrix[64] = {
00376  16, 17, 18, 19, 20, 21, 22, 23,
00377  17, 18, 19, 20, 21, 22, 23, 24,
00378  18, 19, 20, 21, 22, 23, 24, 25,
00379  19, 20, 21, 22, 23, 24, 26, 27,
00380  20, 21, 22, 23, 25, 26, 27, 28,
00381  21, 22, 23, 24, 26, 27, 28, 30,
00382  22, 23, 24, 26, 27, 28, 30, 31,
00383  23, 24, 25, 27, 28, 30, 31, 33,
00384 };
00385 
00386 const uint8_t ff_mpeg4_y_dc_scale_table[32]={
00387 //  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
00388     0, 8, 8, 8, 8,10,12,14,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,34,36,38,40,42,44,46
00389 };
00390 const uint8_t ff_mpeg4_c_dc_scale_table[32]={
00391 //  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
00392     0, 8, 8, 8, 8, 9, 9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,17,17,18,18,19,20,21,22,23,24,25
00393 };
00394 
00395 const uint16_t ff_mpeg4_resync_prefix[8]={
00396     0x7F00, 0x7E00, 0x7C00, 0x7800, 0x7000, 0x6000, 0x4000, 0x0000
00397 };
00398 
00399 static const uint8_t mpeg4_dc_threshold[8]={
00400     99, 13, 15, 17, 19, 21, 23, 0
00401 };