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#include "mtypes.h" |
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#include "mproto.h" |
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|
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static int qtable[][8] = { |
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{ 8,16,19,22,26,27,29,34}, |
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{16,16,22,24,27,29,34,37}, |
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{19,22,26,27,29,34,34,38}, |
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{22,22,26,27,29,34,37,40}, |
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{22,26,27,29,32,35,40,48}, |
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{26,27,29,32,35,40,48,58}, |
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{26,27,29,34,38,46,56,69}, |
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{27,29,35,38,46,56,69,83} }; |
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|
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|
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/* |
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*-------------------------------------------------------------- |
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* |
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* mp_quant_block -- |
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* |
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* Quantizes a block -- removing information |
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* It's safe for out == in. |
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* |
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* Results: |
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* None. |
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* |
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* Side effects: |
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* Modifies the out block. |
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* |
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*-------------------------------------------------------------- |
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*/ |
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void mp_quant_block(Block in, Block out) { |
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int i; |
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|
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for(i=0;i<8;i++) { |
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out[i][0] = in[i][0] / qtable[i][0]; |
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out[i][1] = in[i][1] / qtable[i][1]; |
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out[i][2] = in[i][2] / qtable[i][2]; |
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out[i][3] = in[i][3] / qtable[i][3]; |
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out[i][4] = in[i][4] / qtable[i][4]; |
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out[i][5] = in[i][5] / qtable[i][5]; |
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out[i][6] = in[i][6] / qtable[i][6]; |
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out[i][7] = in[i][7] / qtable[i][7]; |
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} |
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} |
