ref: 7d00e8bc42247ebbb3ae5bbd8e4274bf6f489290
dir: /codec/decoder/core/src/decode_mb_aux.cpp/
/*! * \copy * Copyright (c) 2013, Cisco Systems * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * */ #include <string.h> #include "decode_mb_aux.h" #include "wels_common_basis.h" namespace WelsDec { //NOTE::: p_RS should NOT be modified and it will lead to mismatch with JSVM. // so should allocate kA array to store the temporary value (idct). void IdctResAddPred_c (uint8_t* pPred, const int32_t kiStride, int16_t* pRs) { int16_t iSrc[16]; uint8_t* pDst = pPred; const int32_t kiStride2 = kiStride << 1; const int32_t kiStride3 = kiStride + kiStride2; int32_t i; for (i = 0; i < 4; i++) { const int32_t kiY = i << 2; const int32_t kiT0 = pRs[kiY] + pRs[kiY + 2]; const int32_t kiT1 = pRs[kiY] - pRs[kiY + 2]; const int32_t kiT2 = (pRs[kiY + 1] >> 1) - pRs[kiY + 3]; const int32_t kiT3 = pRs[kiY + 1] + (pRs[kiY + 3] >> 1); iSrc[kiY] = kiT0 + kiT3; iSrc[kiY + 1] = kiT1 + kiT2; iSrc[kiY + 2] = kiT1 - kiT2; iSrc[kiY + 3] = kiT0 - kiT3; } for (i = 0; i < 4; i++) { int32_t kT1 = iSrc[i] + iSrc[i + 8]; int32_t kT2 = iSrc[i + 4] + (iSrc[i + 12] >> 1); int32_t kT3 = (32 + kT1 + kT2) >> 6; int32_t kT4 = (32 + kT1 - kT2) >> 6; pDst[i] = WelsClip1 (kT3 + pPred[i]); pDst[i + kiStride3] = WelsClip1 (kT4 + pPred[i + kiStride3]); kT1 = iSrc[i] - iSrc[i + 8]; kT2 = (iSrc[i + 4] >> 1) - iSrc[i + 12]; pDst[i + kiStride] = WelsClip1 (((32 + kT1 + kT2) >> 6) + pDst[i + kiStride]); pDst[i + kiStride2] = WelsClip1 (((32 + kT1 - kT2) >> 6) + pDst[i + kiStride2]); } } void IdctResAddPred8x8_c (uint8_t* pPred, const int32_t kiStride, int16_t* pRs) { // To make the ASM code easy to write, should using one funciton to apply hor and ver together, such as we did on HEVC // Ugly code, just for easy debug, the final version need optimization int16_t p[8], b[8]; int16_t a[4]; int16_t iTmp[64]; int16_t iRes[64]; // Horizontal for (int i = 0; i < 8; i++) { for (int j = 0; j < 8; j++) { p[j] = pRs[j + (i << 3)]; } a[0] = p[0] + p[4]; a[1] = p[0] - p[4]; a[2] = p[6] - (p[2] >> 1); a[3] = p[2] + (p[6] >> 1); b[0] = a[0] + a[3]; b[2] = a[1] - a[2]; b[4] = a[1] + a[2]; b[6] = a[0] - a[3]; a[0] = -p[3] + p[5] - p[7] - (p[7] >> 1); a[1] = p[1] + p[7] - p[3] - (p[3] >> 1); a[2] = -p[1] + p[7] + p[5] + (p[5] >> 1); a[3] = p[3] + p[5] + p[1] + (p[1] >> 1); b[1] = a[0] + (a[3] >> 2); b[3] = a[1] + (a[2] >> 2); b[5] = a[2] - (a[1] >> 2); b[7] = a[3] - (a[0] >> 2); iTmp[0 + (i << 3)] = b[0] + b[7]; iTmp[1 + (i << 3)] = b[2] - b[5]; iTmp[2 + (i << 3)] = b[4] + b[3]; iTmp[3 + (i << 3)] = b[6] + b[1]; iTmp[4 + (i << 3)] = b[6] - b[1]; iTmp[5 + (i << 3)] = b[4] - b[3]; iTmp[6 + (i << 3)] = b[2] + b[5]; iTmp[7 + (i << 3)] = b[0] - b[7]; } //Vertical for (int i = 0; i < 8; i++) { for (int j = 0; j < 8; j++) { p[j] = iTmp[i + (j << 3)]; } a[0] = p[0] + p[4]; a[1] = p[0] - p[4]; a[2] = p[6] - (p[2] >> 1); a[3] = p[2] + (p[6] >> 1); b[0] = a[0] + a[3]; b[2] = a[1] - a[2]; b[4] = a[1] + a[2]; b[6] = a[0] - a[3]; a[0] = -p[3] + p[5] - p[7] - (p[7] >> 1); a[1] = p[1] + p[7] - p[3] - (p[3] >> 1); a[2] = -p[1] + p[7] + p[5] + (p[5] >> 1); a[3] = p[3] + p[5] + p[1] + (p[1] >> 1); b[1] = a[0] + (a[3] >> 2); b[7] = a[3] - (a[0] >> 2); b[3] = a[1] + (a[2] >> 2); b[5] = a[2] - (a[1] >> 2); iRes[ (0 << 3) + i] = b[0] + b[7]; iRes[ (1 << 3) + i] = b[2] - b[5]; iRes[ (2 << 3) + i] = b[4] + b[3]; iRes[ (3 << 3) + i] = b[6] + b[1]; iRes[ (4 << 3) + i] = b[6] - b[1]; iRes[ (5 << 3) + i] = b[4] - b[3]; iRes[ (6 << 3) + i] = b[2] + b[5]; iRes[ (7 << 3) + i] = b[0] - b[7]; } uint8_t* pDst = pPred; for (int i = 0; i < 8; i++) { for (int j = 0; j < 8; j++) { pDst[i * kiStride + j] = WelsClip1 (((32 + iRes[ (i << 3) + j]) >> 6) + pDst[i * kiStride + j]); } } } void GetI4LumaIChromaAddrTable (int32_t* pBlockOffset, const int32_t kiYStride, const int32_t kiUVStride) { int32_t* pOffset = pBlockOffset; int32_t i; const uint8_t kuiScan0 = g_kuiScan8[0]; for (i = 0; i < 16; i++) { const uint32_t kuiA = g_kuiScan8[i] - kuiScan0; const uint32_t kuiX = kuiA & 0x07; const uint32_t kuiY = kuiA >> 3; pOffset[i] = (kuiX + kiYStride * kuiY) << 2; } for (i = 0; i < 4; i++) { const uint32_t kuiA = g_kuiScan8[i] - kuiScan0; pOffset[16 + i] = pOffset[20 + i] = ((kuiA & 0x07) + (kiUVStride/*>>1*/) * (kuiA >> 3)) << 2; } } } // namespace WelsDec