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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 1.14 2004-03-22 22:36:24 edgomez Exp $ |
* $Id$ |
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* |
* |
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****************************************************************************/ |
****************************************************************************/ |
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#include "../global.h" |
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#include "quant_matrix.h" |
#include "quant_matrix.h" |
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#define FIX(X) (((X)==1) ? 0xFFFF : ((1UL << 16) / (X) + 1)) |
#define FIX(X) (((X)==1) ? 0xFFFF : ((1UL << 16) / (X) + 1)) |
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{ |
{ |
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int i; |
int i; |
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uint16_t *intra_matrix = mpeg_quant_matrices + 0*64; |
uint16_t *intra_matrix = mpeg_quant_matrices + 0*64; |
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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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intra_matrix[i] = (!i) ? (uint16_t)8: (uint16_t)matrix[i]; |
intra_matrix[i] = (!i) ? (uint16_t)8: (uint16_t)MAX(1, matrix[i]); |
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intra_matrix1[i] = (intra_matrix[i]>>1); |
} |
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intra_matrix1[i] += ((intra_matrix[i] == 1) ? 1: 0); |
} |
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intra_matrix_fix[i] = FIX(intra_matrix[i]); |
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intra_matrix_fixl[i] = FIXL(intra_matrix[i]); |
void |
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init_intra_matrix(uint16_t * mpeg_quant_matrices, uint32_t quant) |
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{ |
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int i; |
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uint16_t *intra_matrix = mpeg_quant_matrices + 0*64; |
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uint16_t *intra_matrix_rec = mpeg_quant_matrices + 1*64; |
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for (i = 0; i < 64; i++) { |
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uint32_t div = intra_matrix[i]*quant; |
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intra_matrix_rec[i] = ((uint32_t)((1<<SCALEBITS) + (div>>1)))/div; |
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} |
} |
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} |
} |
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uint16_t *inter_matrix_fixl = mpeg_quant_matrices + 7*64; |
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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inter_matrix1[i] = ((inter_matrix[i] = (int16_t) matrix[i])>>1); |
inter_matrix1[i] = ((inter_matrix[i] = (int16_t)MAX(1, (matrix[i])>>1))); |
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inter_matrix1[i] += ((inter_matrix[i] == 1) ? 1: 0); |
inter_matrix1[i] += ((inter_matrix[i] == 1) ? 1: 0); |
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inter_matrix_fix[i] = FIX(inter_matrix[i]); |
inter_matrix_fix[i] = (uint16_t) FIX(inter_matrix[i]); |
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inter_matrix_fixl[i] = FIXL(inter_matrix[i]); |
inter_matrix_fixl[i] = (uint16_t) FIXL(inter_matrix[i]); |
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} |
} |
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} |
} |
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