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/****************************************************************************** * * * This file is part of XviD, a free MPEG-4 video encoder/decoder * * * * XviD is an implementation of a part of one or more MPEG-4 Video tools * * as specified in ISO/IEC 14496-2 standard. Those intending to use this * * software module in hardware or software products are advised that its * * use may infringe existing patents or copyrights, and any such use * * would be at such party's own risk. The original developer of this * * software module and his/her company, and subsequent editors and their * * companies, will have no liability for use of this software or * * modifications or derivatives thereof. * * * * XviD is free software; you can redistribute it and/or modify it * * under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * * XviD is distributed in the hope that it will be useful, but * * WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this program; if not, write to the Free Software * * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * * ******************************************************************************/ /****************************************************************************** * * * mbtransquant.c * * * * Copyright (C) 2001 - Peter Ross <pross@cs.rmit.edu.au> * * Copyright (C) 2001 - Michael Militzer <isibaar@xvid.org> * * * * For more information visit the XviD homepage: http://www.xvid.org * * * ******************************************************************************/ /****************************************************************************** * * * Revision history: * * * * 22.12.2001 get_dc_scaler() moved to common.h * 19.11.2001 introduced coefficient thresholding (Isibaar) * * 17.11.2001 initial version * * * ******************************************************************************/ #include "../portab.h" #include "mbfunctions.h" #include "../global.h" #include "mem_transfer.h" #include "timer.h" #include "../dct/fdct.h" #include "../dct/idct.h" #include "../quant/quant_mpeg4.h" #include "../quant/quant_h263.h" #include "../encoder.h" #define MIN(X, Y) ((X)<(Y)?(X):(Y)) #define MAX(X, Y) ((X)>(Y)?(X):(Y)) #define TOOSMALL_LIMIT 1 /* skip blocks having a coefficient sum below this value */ /* this isnt pretty, but its better than 20 ifdefs */ void MBTransQuantIntra(const MBParam *pParam, const uint32_t x_pos, const uint32_t y_pos, int16_t data[][64], int16_t qcoeff[][64], IMAGE * const pCurrent) { const uint32_t stride = pParam->edged_width; uint32_t i; uint32_t iQuant = pParam->quant; uint8_t *pY_Cur, *pU_Cur, *pV_Cur; pY_Cur = pCurrent->y + (y_pos << 4) * stride + (x_pos << 4); pU_Cur = pCurrent->u + (y_pos << 3) * (stride >> 1) + (x_pos << 3); pV_Cur = pCurrent->v + (y_pos << 3) * (stride >> 1) + (x_pos << 3); for(i = 0; i < 6; i++) { uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); start_timer(); switch(i) { case 0 : transfer_8to16copy(data[0], pY_Cur, stride); break; case 1 : transfer_8to16copy(data[1], pY_Cur + 8, stride); break; case 2 : transfer_8to16copy(data[2], pY_Cur + 8 * stride, stride); break; case 3 : transfer_8to16copy(data[3], pY_Cur + 8 * stride + 8, stride); break; case 4 : transfer_8to16copy(data[4], pU_Cur, stride / 2); break; case 5 : transfer_8to16copy(data[5], pV_Cur, stride / 2); break; } stop_transfer_timer(); start_timer(); fdct(data[i]); stop_dct_timer(); if (pParam->quant_type == H263_QUANT) { start_timer(); quant_intra(qcoeff[i], data[i], iQuant, iDcScaler); stop_quant_timer(); start_timer(); dequant_intra(data[i], qcoeff[i], iQuant, iDcScaler); stop_iquant_timer(); } else { start_timer(); quant4_intra(qcoeff[i], data[i], iQuant, iDcScaler); stop_quant_timer(); start_timer(); dequant4_intra(data[i], qcoeff[i], iQuant, iDcScaler); stop_iquant_timer(); } start_timer(); idct(data[i]); stop_idct_timer(); start_timer(); switch(i) { case 0: transfer_16to8copy(pY_Cur, data[0], stride); break; case 1: transfer_16to8copy(pY_Cur + 8, data[1], stride); break; case 2: transfer_16to8copy(pY_Cur + 8 * stride, data[2], stride); break; case 3: transfer_16to8copy(pY_Cur + 8 + 8 * stride, data[3], stride); break; case 4: transfer_16to8copy(pU_Cur, data[4], stride / 2); break; case 5: transfer_16to8copy(pV_Cur, data[5], stride / 2); break; } stop_transfer_timer(); } } uint8_t MBTransQuantInter(const MBParam *pParam, const uint32_t x_pos, const uint32_t y_pos, int16_t data[][64], int16_t qcoeff[][64], IMAGE * const pCurrent) { const uint32_t stride = pParam->edged_width; uint8_t i; uint8_t iQuant = pParam->quant; uint8_t *pY_Cur, *pU_Cur, *pV_Cur; uint8_t cbp = 0; uint32_t sum; pY_Cur = pCurrent->y + (y_pos << 4) * stride + (x_pos << 4); pU_Cur = pCurrent->u + (y_pos << 3) * (stride >> 1) + (x_pos << 3); pV_Cur = pCurrent->v + (y_pos << 3) * (stride >> 1) + (x_pos << 3); for(i = 0; i < 6; i++) { /* no need to transfer 8->16-bit (this is performed already in motion compensation) */ start_timer(); fdct(data[i]); stop_dct_timer(); if (pParam->quant_type == 0) { start_timer(); sum = quant_inter(qcoeff[i], data[i], iQuant); stop_quant_timer(); } else { start_timer(); sum = quant4_inter(qcoeff[i], data[i], iQuant); stop_quant_timer(); } if(sum >= TOOSMALL_LIMIT) { // skip block ? if (pParam->quant_type == H263_QUANT) { start_timer(); dequant_inter(data[i], qcoeff[i], iQuant); stop_iquant_timer(); } else { start_timer(); dequant4_inter(data[i], qcoeff[i], iQuant); stop_iquant_timer(); } cbp |= 1 << (5 - i); start_timer(); idct(data[i]); stop_idct_timer(); start_timer(); switch(i) { case 0: transfer_16to8add(pY_Cur, data[0], stride); break; case 1: transfer_16to8add(pY_Cur + 8, data[1], stride); break; case 2: transfer_16to8add(pY_Cur + 8 * stride, data[2], stride); break; case 3: transfer_16to8add(pY_Cur + 8 + 8 * stride, data[3], stride); break; case 4: transfer_16to8add(pU_Cur, data[4], stride / 2); break; case 5: transfer_16to8add(pV_Cur, data[5], stride / 2); break; } stop_transfer_timer(); } } return cbp; }
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