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/***************************************************************************** |
/***************************************************************************** |
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* |
* |
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* XVID MPEG-4 VIDEO CODEC |
* XVID MPEG-4 VIDEO CODEC |
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* - Custom matrix quantization functions - |
* - Quantization matrix management code - |
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* |
* |
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* Copyright(C) 2002 Michael Militzer <isibaar@xvid.org> |
* Copyright(C) 2002 Michael Militzer <isibaar@xvid.org> |
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* 2002 Peter Ross <pross@xvid.org> |
* 2002 Peter Ross <pross@xvid.org> |
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* |
* |
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* 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 |
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* to use this software module in hardware or software products are |
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* advised that its use may infringe existing patents or copyrights, and |
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* any such use would be at such party's own risk. The original |
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* developer of this software module and his/her company, and subsequent |
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* editors and their companies, will have no liability for use of this |
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* software or modifications or derivatives thereof. |
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* |
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* This program is free software ; you can redistribute it and/or modify |
* This program is free software ; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation ; either version 2 of the License, or |
* the Free Software Foundation ; either version 2 of the License, or |
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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 1.11 2002-10-19 12:20:33 edgomez Exp $ |
* $Id: quant_matrix.c,v 1.14 2004-03-22 22:36:24 edgomez Exp $ |
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* |
* |
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****************************************************************************/ |
****************************************************************************/ |
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#include "quant_matrix.h" |
#include "quant_matrix.h" |
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#define FIX(X) (1 << 16) / (X) + 1 |
#define FIX(X) (((X)==1) ? 0xFFFF : ((1UL << 16) / (X) + 1)) |
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#define FIXL(X) ((1UL << 16) / (X) - 1) |
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/***************************************************************************** |
/***************************************************************************** |
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* Local data |
* Default matrices |
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****************************************************************************/ |
****************************************************************************/ |
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/* ToDo : remove all this local to make this module thread safe */ |
static const uint8_t default_intra_matrix[64] = { |
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uint8_t custom_intra_matrix = 0; |
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uint8_t custom_inter_matrix = 0; |
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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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int16_t intra_matrix[64] = { |
static const uint8_t default_inter_matrix[64] = { |
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8, 17, 18, 19, 21, 23, 25, 27, |
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17, 18, 19, 21, 23, 25, 27, 28, |
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20, 21, 22, 23, 24, 26, 28, 30, |
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21, 22, 23, 24, 26, 28, 30, 32, |
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22, 23, 24, 26, 28, 30, 32, 35, |
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23, 24, 26, 28, 30, 32, 35, 38, |
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25, 26, 28, 30, 32, 35, 38, 41, |
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27, 28, 30, 32, 35, 38, 41, 45 |
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}; |
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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), |
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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), |
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FIX(21), FIX(22), FIX(23), FIX(24), FIX(26), FIX(28), FIX(30), FIX(32), |
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FIX(22), FIX(23), FIX(24), FIX(26), FIX(28), FIX(30), FIX(32), FIX(35), |
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FIX(23), FIX(24), FIX(26), FIX(28), FIX(30), FIX(32), FIX(35), FIX(38), |
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FIX(25), FIX(26), FIX(28), FIX(30), FIX(32), FIX(35), FIX(38), FIX(41), |
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FIX(27), FIX(28), FIX(30), FIX(32), FIX(35), FIX(38), FIX(41), FIX(45) |
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}; |
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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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int16_t inter_matrix[64] = { |
const uint16_t * |
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16, 17, 18, 19, 20, 21, 22, 23, |
get_intra_matrix(const uint16_t * mpeg_quant_matrices) |
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17, 18, 19, 20, 21, 22, 23, 24, |
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18, 19, 20, 21, 22, 23, 24, 25, |
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19, 20, 21, 22, 23, 24, 26, 27, |
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20, 21, 22, 23, 25, 26, 27, 28, |
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21, 22, 23, 24, 26, 27, 28, 30, |
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22, 23, 24, 26, 27, 28, 30, 31, |
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23, 24, 25, 27, 28, 30, 31, 33 |
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}; |
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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), |
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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), |
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FIX(19), FIX(20), FIX(21), FIX(22), FIX(23), FIX(24), FIX(26), FIX(27), |
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FIX(20), FIX(21), FIX(22), FIX(23), FIX(25), FIX(26), FIX(27), FIX(28), |
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FIX(21), FIX(22), FIX(23), FIX(24), FIX(26), FIX(27), FIX(28), FIX(30), |
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FIX(22), FIX(23), FIX(24), FIX(26), FIX(27), FIX(28), FIX(30), FIX(31), |
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FIX(23), FIX(24), FIX(25), FIX(27), FIX(28), FIX(30), FIX(31), FIX(33) |
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}; |
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/***************************************************************************** |
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* Functions |
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****************************************************************************/ |
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uint8_t |
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get_intra_matrix_status(void) |
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{ |
{ |
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return custom_intra_matrix; |
return(mpeg_quant_matrices + 0*64); |
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} |
} |
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uint8_t |
const uint16_t * |
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get_inter_matrix_status(void) |
get_inter_matrix(const uint16_t * mpeg_quant_matrices) |
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{ |
{ |
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return custom_inter_matrix; |
return(mpeg_quant_matrices + 4*64); |
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} |
} |
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void |
const uint8_t * |
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set_intra_matrix_status(uint8_t status) |
get_default_intra_matrix(void) |
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{ |
{ |
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custom_intra_matrix = status; |
return default_intra_matrix; |
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} |
} |
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void |
const uint8_t * |
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set_inter_matrix_status(uint8_t status) |
get_default_inter_matrix(void) |
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{ |
{ |
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custom_inter_matrix = status; |
return default_inter_matrix; |
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} |
} |
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int16_t * |
int |
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get_intra_matrix(void) |
is_custom_intra_matrix(const uint16_t * mpeg_quant_matrices) |
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{ |
{ |
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return intra_matrix; |
int i; |
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} |
const uint16_t *intra_matrix = get_intra_matrix(mpeg_quant_matrices); |
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const uint8_t *def_intra_matrix = get_default_intra_matrix(); |
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int16_t * |
for (i = 0; i < 64; i++) { |
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get_inter_matrix(void) |
if(intra_matrix[i] != def_intra_matrix[i]) |
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{ |
return 1; |
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return inter_matrix; |
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} |
} |
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return 0; |
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uint8_t * |
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get_default_intra_matrix(void) |
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{ |
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return default_intra_matrix; |
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} |
} |
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uint8_t * |
int |
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get_default_inter_matrix(void) |
is_custom_inter_matrix(const uint16_t * mpeg_quant_matrices) |
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{ |
{ |
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return default_inter_matrix; |
int i; |
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const uint16_t *inter_matrix = get_inter_matrix(mpeg_quant_matrices); |
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const uint8_t *def_inter_matrix = get_default_inter_matrix(); |
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for (i = 0; i < 64; i++) { |
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if(inter_matrix[i] != (uint16_t)def_inter_matrix[i]) |
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return 1; |
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} |
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return 0; |
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} |
} |
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uint8_t |
void |
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set_intra_matrix(uint8_t * matrix) |
set_intra_matrix(uint16_t * mpeg_quant_matrices, const uint8_t * matrix) |
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{ |
{ |
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int i, change = 0; |
int i; |
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uint16_t *intra_matrix = mpeg_quant_matrices + 0*64; |
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custom_intra_matrix = 0; |
uint16_t *intra_matrix1 = mpeg_quant_matrices + 1*64; |
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uint16_t *intra_matrix_fix = mpeg_quant_matrices + 2*64; |
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uint16_t *intra_matrix_fixl = mpeg_quant_matrices + 3*64; |
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for (i = 0; i < 64; i++) { |
for (i = 0; i < 64; i++) { |
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if ((int16_t) default_intra_matrix[i] != matrix[i]) |
intra_matrix[i] = (!i) ? (uint16_t)8: (uint16_t)matrix[i]; |
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custom_intra_matrix = 1; |
intra_matrix1[i] = (intra_matrix[i]>>1); |
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if (intra_matrix[i] != matrix[i]) |
intra_matrix1[i] += ((intra_matrix[i] == 1) ? 1: 0); |
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change = 1; |
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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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intra_matrix_fixl[i] = FIXL(intra_matrix[i]); |
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} |
} |
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return /*custom_intra_matrix |*/ change; |
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} |
} |
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void |
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uint8_t |
set_inter_matrix(uint16_t * mpeg_quant_matrices, const uint8_t * matrix) |
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set_inter_matrix(uint8_t * matrix) |
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{ |
{ |
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int i, change = 0; |
int i; |
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uint16_t *inter_matrix = mpeg_quant_matrices + 4*64; |
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custom_inter_matrix = 0; |
uint16_t *inter_matrix1 = mpeg_quant_matrices + 5*64; |
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uint16_t *inter_matrix_fix = mpeg_quant_matrices + 6*64; |
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uint16_t *inter_matrix_fixl = mpeg_quant_matrices + 7*64; |
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for (i = 0; i < 64; i++) { |
for (i = 0; i < 64; i++) { |
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if ((int16_t) default_inter_matrix[i] != matrix[i]) |
inter_matrix1[i] = ((inter_matrix[i] = (int16_t) matrix[i])>>1); |
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custom_inter_matrix = 1; |
inter_matrix1[i] += ((inter_matrix[i] == 1) ? 1: 0); |
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if (inter_matrix[i] != matrix[i]) |
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change = 1; |
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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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inter_matrix_fixl[i] = FIXL(inter_matrix[i]); |
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} |
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} |
} |
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return /*custom_inter_matrix |*/ change; |
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void |
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init_mpeg_matrix(uint16_t * mpeg_quant_matrices) { |
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set_intra_matrix(mpeg_quant_matrices, default_intra_matrix); |
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set_inter_matrix(mpeg_quant_matrices, default_inter_matrix); |
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} |
} |