| /*------------------------------------------------------------------------------ |
| -- -- |
| -- This software is confidential and proprietary and may be used -- |
| -- only as expressly authorized by a licensing agreement from -- |
| -- -- |
| -- Hantro Products Oy. -- |
| -- -- |
| -- (C) COPYRIGHT 2006 HANTRO PRODUCTS OY -- |
| -- ALL RIGHTS RESERVED -- |
| -- -- |
| -- The entire notice above must be reproduced -- |
| -- on all copies and should not be removed. -- |
| -- -- |
| -------------------------------------------------------------------------------- |
| */ |
| |
| #include "vp8macroblocktools.h" |
| #include "vp8quanttable.h" |
| |
| void InitQuantTables(vp8Instance_s* mbs) { |
| int32_t i, j, tmp; |
| qp* qp; |
| |
| for (i = 0; i < QINDEX_RANGE; i++) { |
| /* Quant table for 1'st order luminance */ |
| qp = &mbs->qpY1[i]; |
| for (j = 0; j < 2; j++) { |
| if (j == 0) { |
| tmp = DcQLookup[i]; |
| } else { |
| tmp = AcQLookup[i]; |
| } |
| qp->quant[j] = MIN((1 << 16) / tmp, 0x3FFF); |
| qp->zbin[j] = ((QZbinFactors[i] * tmp) + 64) >> 7; |
| qp->round[j] = (QRoundingFactors[i] * tmp) >> 7; |
| qp->dequant[j] = tmp; |
| } |
| |
| /* Quant table for 2'st order luminance */ |
| qp = &mbs->qpY2[i]; |
| for (j = 0; j < 2; j++) { |
| if (j == 0) { |
| tmp = DcQLookup[i] * 2; |
| } else { |
| tmp = AcQLookup[i]; |
| tmp = (tmp * 155) / 100; |
| if (tmp < 8) tmp = 8; |
| } |
| qp->quant[j] = MIN((1 << 16) / tmp, 0x3FFF); |
| qp->zbin[j] = ((QZbinFactors[i] * tmp) + 64) >> 7; |
| qp->round[j] = (QRoundingFactors[i] * tmp) >> 7; |
| qp->dequant[j] = tmp; |
| } |
| |
| /* Quant table for chrominance */ |
| qp = &mbs->qpCh[i]; |
| for (j = 0; j < 2; j++) { |
| if (j == 0) { |
| tmp = DcQLookup[i]; |
| if (tmp > 132) tmp = 132; |
| } else { |
| tmp = AcQLookup[i]; |
| } |
| qp->quant[j] = MIN((1 << 16) / tmp, 0x3FFF); |
| qp->zbin[j] = ((QZbinFactors[i] * tmp) + 64) >> 7; |
| qp->round[j] = (QRoundingFactors[i] * tmp) >> 7; |
| qp->dequant[j] = tmp; |
| } |
| } |
| } |
| |
| |
