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/****************************************************************************** |
/***************************************************************************** |
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* * |
* |
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* This file is part of XviD, a free MPEG-4 video encoder/decoder * |
* XVID MPEG-4 VIDEO CODEC |
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* * |
* - MacroBlock transfer and quantization - |
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* XviD is an implementation of a part of one or more MPEG-4 Video tools * |
* |
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* as specified in ISO/IEC 14496-2 standard. Those intending to use this * |
* Copyright(C) 2002-2001 Michael Militzer <isibaar@xvid.org> |
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* software module in hardware or software products are advised that its * |
* 2002-2001 Peter Ross <pross@xvid.org> |
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* use may infringe existing patents or copyrights, and any such use * |
* |
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* would be at such party's own risk. The original developer of this * |
* This program is an implementation of a part of one or more MPEG-4 |
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* software module and his/her company, and subsequent editors and their * |
* Video tools as specified in ISO/IEC 14496-2 standard. Those intending |
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* companies, will have no liability for use of this software or * |
* to use this software module in hardware or software products are |
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* modifications or derivatives thereof. * |
* advised that its use may infringe existing patents or copyrights, and |
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* * |
* any such use would be at such party's own risk. The original |
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* XviD is free software; you can redistribute it and/or modify it * |
* developer of this software module and his/her company, and subsequent |
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* under the terms of the GNU General Public License as published by * |
* editors and their companies, will have no liability for use of this |
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* the Free Software Foundation; either version 2 of the License, or * |
* software or modifications or derivatives thereof. |
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* (at your option) any later version. * |
* |
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* * |
* This program is free software; you can redistribute it and/or modify |
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* XviD is distributed in the hope that it will be useful, but * |
* it under the terms of the GNU General Public License as published by |
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* WITHOUT ANY WARRANTY; without even the implied warranty of * |
* the Free Software Foundation; either version 2 of the License, or |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
* (at your option) any later version. |
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* GNU General Public License for more details. * |
* |
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* * |
* This program is distributed in the hope that it will be useful, |
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* You should have received a copy of the GNU General Public License * |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* along with this program; if not, write to the Free Software * |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * |
* GNU General Public License for more details. |
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* * |
* |
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******************************************************************************/ |
* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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/****************************************************************************** |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* * |
* |
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* mbtransquant.c * |
* $Id: mbtransquant.c,v 1.15 2002-10-07 08:11:48 chl Exp $ |
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* * |
* |
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* Copyright (C) 2001 - Peter Ross <pross@cs.rmit.edu.au> * |
****************************************************************************/ |
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* Copyright (C) 2001 - Michael Militzer <isibaar@xvid.org> * |
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* * |
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* For more information visit the XviD homepage: http://www.xvid.org * |
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* * |
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******************************************************************************/ |
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/****************************************************************************** |
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* * |
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* Revision history: * |
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* * |
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* 29.03.2002 interlacing speedup - used transfer strides instead of |
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* manual field-to-frame conversion |
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* 26.03.2002 interlacing support - moved transfers outside loops |
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* 22.12.2001 get_dc_scaler() moved to common.h |
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* 19.11.2001 introduced coefficient thresholding (Isibaar) * |
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* 17.11.2001 initial version * |
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* * |
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******************************************************************************/ |
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#include <string.h> |
#include <string.h> |
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#define MIN(X, Y) ((X)<(Y)?(X):(Y)) |
#define MIN(X, Y) ((X)<(Y)?(X):(Y)) |
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#define MAX(X, Y) ((X)>(Y)?(X):(Y)) |
#define MAX(X, Y) ((X)>(Y)?(X):(Y)) |
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#define TOOSMALL_LIMIT 1 /* skip blocks having a coefficient sum below this value */ |
#define TOOSMALL_LIMIT 3 /* skip blocks having a coefficient sum below this value */ |
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/* this isnt pretty, but its better than 20 ifdefs */ |
/* this isnt pretty, but its better than 20 ifdefs */ |
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start_timer(); |
start_timer(); |
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pMB->field_dct = 0; |
pMB->field_dct = 0; |
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if ((frame->global_flags & XVID_INTERLACING)) { |
if ((frame->global_flags & XVID_INTERLACING) && |
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(x_pos>0) && (x_pos<pParam->mb_width-1) && |
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(y_pos>0) && (y_pos<pParam->mb_height-1)) { |
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pMB->field_dct = MBDecideFieldDCT(data); |
pMB->field_dct = MBDecideFieldDCT(data); |
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} |
} |
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stop_interlacing_timer(); |
stop_interlacing_timer(); |
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start_timer(); |
start_timer(); |
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pMB->field_dct = 0; |
pMB->field_dct = 0; |
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if ((frame->global_flags & XVID_INTERLACING)) { |
if ((frame->global_flags & XVID_INTERLACING) && |
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(x_pos>0) && (x_pos<pParam->mb_width-1) && |
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(y_pos>0) && (y_pos<pParam->mb_height-1)) { |
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pMB->field_dct = MBDecideFieldDCT(data); |
pMB->field_dct = MBDecideFieldDCT(data); |
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} |
} |
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stop_interlacing_timer(); |
stop_interlacing_timer(); |
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stop_quant_timer(); |
stop_quant_timer(); |
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} |
} |
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if (sum >= TOOSMALL_LIMIT) { // skip block ? |
if ((sum >= TOOSMALL_LIMIT) || (qcoeff[i*64] != 0) || |
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(qcoeff[i*64+1] != 0) || (qcoeff[i*64+8] != 0)) { |
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if (pParam->m_quant_type == H263_QUANT) { |
if (pParam->m_quant_type == H263_QUANT) { |
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start_timer(); |
start_timer(); |
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MBTransQuantInterBVOP(const MBParam * pParam, |
MBTransQuantInterBVOP(const MBParam * pParam, |
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FRAMEINFO * frame, |
FRAMEINFO * frame, |
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MACROBLOCK * pMB, |
MACROBLOCK * pMB, |
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const uint32_t x_pos, |
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const uint32_t y_pos, |
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int16_t data[6 * 64], |
int16_t data[6 * 64], |
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int16_t qcoeff[6 * 64]) |
int16_t qcoeff[6 * 64]) |
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{ |
{ |
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MBQuantIntra(const MBParam * pParam, |
MBQuantIntra(const MBParam * pParam, |
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FRAMEINFO * frame, |
FRAMEINFO * frame, |
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MACROBLOCK *pMB, |
MACROBLOCK *pMB, |
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int16_t qcoeff[6 * 64], |
int16_t data[6*64], |
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int16_t data[6*64]) |
int16_t qcoeff[6 * 64]) |
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) |
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{ |
{ |
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int i; |
int i; |
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int iQuant = frame->quant; |
int iQuant = frame->quant; |
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MBFrameToField(data); |
MBFrameToField(data); |
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} |
} |
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return (frame > field); |
return (frame > (field + 350)); |
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} |
} |
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