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