112 |
{ |
{ |
113 |
int i; |
int i; |
114 |
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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115 |
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116 |
for (i = 0; i < 64; i++) { |
for (i = 0; i < 64; i++) { |
117 |
intra_matrix[i] = (!i) ? (uint16_t)8: (uint16_t)matrix[i]; |
intra_matrix[i] = (!i) ? (uint16_t)8: (uint16_t)matrix[i]; |
118 |
intra_matrix1[i] = (intra_matrix[i]>>1); |
} |
119 |
intra_matrix1[i] += ((intra_matrix[i] == 1) ? 1: 0); |
} |
120 |
intra_matrix_fix[i] = FIX(intra_matrix[i]); |
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121 |
intra_matrix_fixl[i] = FIXL(intra_matrix[i]); |
void |
122 |
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init_intra_matrix(uint16_t * mpeg_quant_matrices, uint32_t quant) |
123 |
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{ |
124 |
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int i; |
125 |
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uint16_t *intra_matrix = mpeg_quant_matrices + 0*64; |
126 |
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uint16_t *intra_matrix_rec = mpeg_quant_matrices + 1*64; |
127 |
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128 |
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for (i = 0; i < 64; i++) { |
129 |
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uint32_t div = intra_matrix[i]*quant; |
130 |
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intra_matrix_rec[i] = ((uint32_t)((1<<SCALEBITS) + (div>>1)))/div; |
131 |
} |
} |
132 |
} |
} |
133 |
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