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* XVID MPEG-4 VIDEO CODEC |
* XVID MPEG-4 VIDEO CODEC |
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* - Custom matrix quantization functions - |
* - Custom matrix quantization functions - |
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* |
* |
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* Copyright(C) 2002 Michael Militzer |
* Copyright(C) 2002 Michael Militzer <isibaar@xvid.org> |
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* |
* |
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* This program is an implementation of a part of one or more MPEG-4 |
* This program is an implementation of a part of one or more MPEG-4 |
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* Video tools as specified in ISO/IEC 14496-2 standard. Those intending |
* Video tools as specified in ISO/IEC 14496-2 standard. Those intending |
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* along with this program ; if not, write to the Free Software |
* along with this program ; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
* |
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* $Id: quant_matrix.c,v 1.6 2002-09-07 11:14:41 edgomez Exp $ |
* $Id: quant_matrix.c,v 1.10 2002-10-19 11:41:11 edgomez Exp $ |
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* |
* |
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****************************************************************************/ |
****************************************************************************/ |
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|
|
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uint8_t custom_intra_matrix = 0; |
uint8_t custom_intra_matrix = 0; |
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uint8_t custom_inter_matrix = 0; |
uint8_t custom_inter_matrix = 0; |
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|
|
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static uint8_t const default_intra_matrix[64] = { |
uint8_t default_intra_matrix[64] = { |
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8, 17, 18, 19, 21, 23, 25, 27, |
8, 17, 18, 19, 21, 23, 25, 27, |
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17, 18, 19, 21, 23, 25, 27, 28, |
17, 18, 19, 21, 23, 25, 27, 28, |
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20, 21, 22, 23, 24, 26, 28, 30, |
20, 21, 22, 23, 24, 26, 28, 30, |
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27, 28, 30, 32, 35, 38, 41, 45 |
27, 28, 30, 32, 35, 38, 41, 45 |
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}; |
}; |
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|
|
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static int16_t intra_matrix[64] = { |
int16_t intra_matrix[64] = { |
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8, 17, 18, 19, 21, 23, 25, 27, |
8, 17, 18, 19, 21, 23, 25, 27, |
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17, 18, 19, 21, 23, 25, 27, 28, |
17, 18, 19, 21, 23, 25, 27, 28, |
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20, 21, 22, 23, 24, 26, 28, 30, |
20, 21, 22, 23, 24, 26, 28, 30, |
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27, 28, 30, 32, 35, 38, 41, 45 |
27, 28, 30, 32, 35, 38, 41, 45 |
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}; |
}; |
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|
|
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static int16_t intra_matrix_fix[64] = { |
int16_t intra_matrix_fix[64] = { |
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FIX(8), FIX(17), FIX(18), FIX(19), FIX(21), FIX(23), FIX(25), FIX(27), |
FIX(8), FIX(17), FIX(18), FIX(19), FIX(21), FIX(23), FIX(25), FIX(27), |
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FIX(17), FIX(18), FIX(19), FIX(21), FIX(23), FIX(25), FIX(27), FIX(28), |
FIX(17), FIX(18), FIX(19), FIX(21), FIX(23), FIX(25), FIX(27), FIX(28), |
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FIX(20), FIX(21), FIX(22), FIX(23), FIX(24), FIX(26), FIX(28), FIX(30), |
FIX(20), FIX(21), FIX(22), FIX(23), FIX(24), FIX(26), FIX(28), FIX(30), |
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FIX(27), FIX(28), FIX(30), FIX(32), FIX(35), FIX(38), FIX(41), FIX(45) |
FIX(27), FIX(28), FIX(30), FIX(32), FIX(35), FIX(38), FIX(41), FIX(45) |
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}; |
}; |
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|
|
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static uint8_t const default_inter_matrix[64] = { |
uint8_t default_inter_matrix[64] = { |
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16, 17, 18, 19, 20, 21, 22, 23, |
16, 17, 18, 19, 20, 21, 22, 23, |
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17, 18, 19, 20, 21, 22, 23, 24, |
17, 18, 19, 20, 21, 22, 23, 24, |
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18, 19, 20, 21, 22, 23, 24, 25, |
18, 19, 20, 21, 22, 23, 24, 25, |
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23, 24, 25, 27, 28, 30, 31, 33 |
23, 24, 25, 27, 28, 30, 31, 33 |
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}; |
}; |
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|
|
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static int16_t inter_matrix[64] = { |
int16_t inter_matrix[64] = { |
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16, 17, 18, 19, 20, 21, 22, 23, |
16, 17, 18, 19, 20, 21, 22, 23, |
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17, 18, 19, 20, 21, 22, 23, 24, |
17, 18, 19, 20, 21, 22, 23, 24, |
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18, 19, 20, 21, 22, 23, 24, 25, |
18, 19, 20, 21, 22, 23, 24, 25, |
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23, 24, 25, 27, 28, 30, 31, 33 |
23, 24, 25, 27, 28, 30, 31, 33 |
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}; |
}; |
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|
|
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static int16_t inter_matrix_fix[64] = { |
int16_t inter_matrix_fix[64] = { |
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FIX(16), FIX(17), FIX(18), FIX(19), FIX(20), FIX(21), FIX(22), FIX(23), |
FIX(16), FIX(17), FIX(18), FIX(19), FIX(20), FIX(21), FIX(22), FIX(23), |
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FIX(17), FIX(18), FIX(19), FIX(20), FIX(21), FIX(22), FIX(23), FIX(24), |
FIX(17), FIX(18), FIX(19), FIX(20), FIX(21), FIX(22), FIX(23), FIX(24), |
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FIX(18), FIX(19), FIX(20), FIX(21), FIX(22), FIX(23), FIX(24), FIX(25), |
FIX(18), FIX(19), FIX(20), FIX(21), FIX(22), FIX(23), FIX(24), FIX(25), |
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intra_matrix[i] = (int16_t) matrix[i]; |
intra_matrix[i] = (int16_t) matrix[i]; |
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intra_matrix_fix[i] = FIX(intra_matrix[i]); |
intra_matrix_fix[i] = FIX(intra_matrix[i]); |
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} |
} |
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return custom_intra_matrix | change; |
return /*custom_intra_matrix |*/ change; |
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} |
} |
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|
|
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|
|
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inter_matrix[i] = (int16_t) matrix[i]; |
inter_matrix[i] = (int16_t) matrix[i]; |
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inter_matrix_fix[i] = FIX(inter_matrix[i]); |
inter_matrix_fix[i] = FIX(inter_matrix[i]); |
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} |
} |
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return custom_inter_matrix | change; |
return /*custom_inter_matrix |*/ change; |
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} |
} |