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* XVID MPEG-4 VIDEO CODEC |
* XVID MPEG-4 VIDEO CODEC |
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* - Decoder main module - |
* - Decoder main module - |
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* |
* |
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* This program is an implementation of a part of one or more MPEG-4 |
* Copyright(C) 2002 MinChen <chenm001@163.com> |
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* Video tools as specified in ISO/IEC 14496-2 standard. Those intending |
* 2002 Peter Ross <pross@xvid.org> |
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* to use this software module in hardware or software products are |
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* 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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* developer of this software module and his/her company, and subsequent |
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* editors and their companies, will have no liability for use of this |
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* software or modifications or derivatives thereof. |
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* |
* |
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* This program is free software; you can redistribute it and/or modify |
* This file is part of XviD, a free MPEG-4 video encoder/decoder |
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* it under the terms of the GNU General Public License as published by |
* |
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* XviD is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
* (at your option) any later version. |
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* |
* |
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* along with this program; if not, write to the Free Software |
* 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 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
* |
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*************************************************************************/ |
* Under section 8 of the GNU General Public License, the copyright |
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* holders of XVID explicitly forbid distribution in the following |
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/************************************************************************** |
* countries: |
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* |
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* - Japan |
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* - United States of America |
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* |
* |
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* History: |
* Linking XviD statically or dynamically with other modules is making a |
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* combined work based on XviD. Thus, the terms and conditions of the |
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* GNU General Public License cover the whole combination. |
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* |
* |
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* 15.07.2002 fix a bug in B-frame decode at DIRECT mode |
* As a special exception, the copyright holders of XviD give you |
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* MinChen <chenm001@163.com> |
* permission to link XviD with independent modules that communicate with |
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* 10.07.2002 added BFRAMES_DEC_DEBUG support |
* XviD solely through the VFW1.1 and DShow interfaces, regardless of the |
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* Fix a little bug for low_delay flage |
* license terms of these independent modules, and to copy and distribute |
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* MinChen <chenm001@163.com> |
* the resulting combined work under terms of your choice, provided that |
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* 28.06.2002 added basic resync support to iframe/pframe_decode() |
* every copy of the combined work is accompanied by a complete copy of |
42 |
* 22.06.2002 added primative N_VOP support |
* the source code of XviD (the version of XviD used to produce the |
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* #define BFRAMES_DEC now enables Minchen's bframe decoder |
* combined work), being distributed under the terms of the GNU General |
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* 08.05.2002 add low_delay support for B_VOP decode |
* Public License plus this exception. An independent module is a module |
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* MinChen <chenm001@163.com> |
* which is not derived from or based on XviD. |
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* 05.05.2002 fix some B-frame decode problem |
* |
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* 02.05.2002 add B-frame decode support(have some problem); |
* Note that people who make modified versions of XviD are not obligated |
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* MinChen <chenm001@163.com> |
* to grant this special exception for their modified versions; it is |
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* 22.04.2002 add some B-frame decode support; chenm001 <chenm001@163.com> |
* their choice whether to do so. The GNU General Public License gives |
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* 29.03.2002 interlacing fix - compensated block wasn't being used when |
* permission to release a modified version without this exception; this |
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* reconstructing blocks, thus artifacts |
* exception also makes it possible to release a modified version which |
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* interlacing speedup - used transfers to re-interlace |
* carries forward this exception. |
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* interlaced decoding should be as fast as progressive now |
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* 26.03.2002 interlacing support - moved transfers outside decode loop |
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* 26.12.2001 decoder_mbinter: dequant/idct moved within if(coded) block |
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* 22.12.2001 lock based interpolation |
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* 01.12.2001 inital version; (c)2001 peter ross <pross@cs.rmit.edu.au> |
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* |
* |
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* $Id$ |
* $Id$ |
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* |
* |
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#include "dct/fdct.h" |
#include "dct/fdct.h" |
76 |
#include "utils/mem_transfer.h" |
#include "utils/mem_transfer.h" |
77 |
#include "image/interpolate8x8.h" |
#include "image/interpolate8x8.h" |
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#include "image/reduced.h" |
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#include "image/font.h" |
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#include "bitstream/mbcoding.h" |
#include "bitstream/mbcoding.h" |
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#include "prediction/mbprediction.h" |
#include "prediction/mbprediction.h" |
81 |
#include "utils/timer.h" |
#include "utils/timer.h" |
82 |
#include "utils/emms.h" |
#include "utils/emms.h" |
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#include "motion/motion.h" |
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#include "image/image.h" |
#include "image/image.h" |
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#include "image/colorspace.h" |
#include "image/colorspace.h" |
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#include "utils/mem_align.h" |
#include "utils/mem_align.h" |
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int |
int |
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decoder_resize(DECODER * dec) |
decoder_create(XVID_DEC_PARAM * param) |
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{ |
{ |
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/* free existing */ |
DECODER *dec; |
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image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
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image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
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image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
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image_destroy(&dec->tmp, dec->edged_width, dec->edged_height); |
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image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height); |
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if (dec->last_mbs) |
dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); |
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xvid_free(dec->last_mbs); |
if (dec == NULL) { |
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if (dec->mbs) |
return XVID_ERR_MEMORY; |
96 |
xvid_free(dec->mbs); |
} |
97 |
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param->handle = dec; |
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/* realloc */ |
dec->width = param->width; |
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dec->height = param->height; |
101 |
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dec->mb_width = (dec->width + 15) / 16; |
dec->mb_width = (dec->width + 15) / 16; |
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dec->mb_height = (dec->height + 15) / 16; |
dec->mb_height = (dec->height + 15) / 16; |
104 |
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dec->edged_width = 16 * dec->mb_width + 2 * EDGE_SIZE; |
dec->edged_width = 16 * dec->mb_width + 2 * EDGE_SIZE; |
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dec->edged_height = 16 * dec->mb_height + 2 * EDGE_SIZE; |
dec->edged_height = 16 * dec->mb_height + 2 * EDGE_SIZE; |
107 |
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dec->low_delay = 0; |
108 |
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if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) { |
if (image_create(&dec->cur, dec->edged_width, dec->edged_height)) { |
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xvid_free(dec); |
xvid_free(dec); |
116 |
xvid_free(dec); |
xvid_free(dec); |
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return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
118 |
} |
} |
119 |
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/* add by chenm001 <chenm001@163.com> */ |
120 |
// add by chenm001 <chenm001@163.com> |
/* for support B-frame to reference last 2 frame */ |
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// for support B-frame to reference last 2 frame |
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if (image_create(&dec->refn[1], dec->edged_width, dec->edged_height)) { |
if (image_create(&dec->refn[1], dec->edged_width, dec->edged_height)) { |
122 |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
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image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
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xvid_free(dec); |
xvid_free(dec); |
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return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
126 |
} |
} |
127 |
if (image_create(&dec->tmp, dec->edged_width, dec->edged_height)) { |
if (image_create(&dec->refn[2], dec->edged_width, dec->edged_height)) { |
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image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
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image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
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image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
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xvid_free(dec); |
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return XVID_ERR_MEMORY; |
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} |
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if (image_create(&dec->qtmp, dec->edged_width, dec->edged_height)) { |
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image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
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image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
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image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
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image_destroy(&dec->tmp, dec->edged_width, dec->edged_height); |
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xvid_free(dec); |
xvid_free(dec); |
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return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
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} |
} |
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image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
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image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
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image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
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image_destroy(&dec->tmp, dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[2], dec->edged_width, dec->edged_height); |
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image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height); |
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xvid_free(dec); |
xvid_free(dec); |
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return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
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} |
} |
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memset(dec->mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); |
memset(dec->mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); |
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// add by chenm001 <chenm001@163.com> |
/* add by chenm001 <chenm001@163.com> */ |
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// for skip MB flag |
/* for skip MB flag */ |
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dec->last_mbs = |
dec->last_mbs = |
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xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, |
xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, |
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CACHE_LINE); |
CACHE_LINE); |
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image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
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image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
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image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
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image_destroy(&dec->tmp, dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[2], dec->edged_width, dec->edged_height); |
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image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height); |
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xvid_free(dec); |
xvid_free(dec); |
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return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
162 |
} |
} |
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memset(dec->last_mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); |
memset(dec->last_mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); |
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return XVID_ERR_OK; |
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} |
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int |
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decoder_create(XVID_DEC_PARAM * param) |
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{ |
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DECODER *dec; |
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dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); |
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if (dec == NULL) { |
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return XVID_ERR_MEMORY; |
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} |
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memset(dec, 0, sizeof(DECODER)); |
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param->handle = dec; |
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dec->width = param->width; |
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dec->height = param->height; |
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image_null(&dec->cur); |
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image_null(&dec->refn[0]); |
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image_null(&dec->refn[1]); |
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image_null(&dec->tmp); |
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image_null(&dec->qtmp); |
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dec->mbs = NULL; |
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dec->last_mbs = NULL; |
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init_timer(); |
init_timer(); |
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// add by chenm001 <chenm001@163.com> |
/* add by chenm001 <chenm001@163.com> */ |
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// for support B-frame to save reference frame's time |
/* for support B-frame to save reference frame's time */ |
170 |
dec->frames = 0; |
dec->frames = -1; |
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dec->time = dec->time_base = dec->last_time_base = 0; |
dec->time = dec->time_base = dec->last_time_base = 0; |
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dec->low_delay = 0; |
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dec->packed_mode = 0; |
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dec->fixed_dimensions = (dec->width > 0 && dec->height > 0); |
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if (dec->fixed_dimensions) |
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return decoder_resize(dec); |
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else |
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173 |
return XVID_ERR_OK; |
return XVID_ERR_OK; |
174 |
} |
} |
175 |
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xvid_free(dec->mbs); |
xvid_free(dec->mbs); |
182 |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
183 |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
184 |
image_destroy(&dec->tmp, dec->edged_width, dec->edged_height); |
image_destroy(&dec->refn[2], dec->edged_width, dec->edged_height); |
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image_destroy(&dec->qtmp, dec->edged_width, dec->edged_height); |
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image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
186 |
xvid_free(dec); |
xvid_free(dec); |
187 |
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198 |
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199 |
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200 |
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// decode an intra macroblock |
/* decode an intra macroblock */ |
202 |
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203 |
void |
void |
204 |
decoder_mbintra(DECODER * dec, |
decoder_mbintra(DECODER * dec, |
210 |
Bitstream * bs, |
Bitstream * bs, |
211 |
const uint32_t quant, |
const uint32_t quant, |
212 |
const uint32_t intra_dc_threshold, |
const uint32_t intra_dc_threshold, |
213 |
const unsigned int bound, |
const unsigned int bound) |
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const int reduced_resolution) |
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214 |
{ |
{ |
215 |
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216 |
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
223 |
uint32_t iQuant = pMB->quant; |
uint32_t iQuant = pMB->quant; |
224 |
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
225 |
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if (reduced_resolution) { |
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pY_Cur = dec->cur.y + (y_pos << 5) * stride + (x_pos << 5); |
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pU_Cur = dec->cur.u + (y_pos << 4) * stride2 + (x_pos << 4); |
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pV_Cur = dec->cur.v + (y_pos << 4) * stride2 + (x_pos << 4); |
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}else{ |
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226 |
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
227 |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
228 |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
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} |
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229 |
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230 |
memset(block, 0, 6 * 64 * sizeof(int16_t)); // clear |
memset(block, 0, 6 * 64 * sizeof(int16_t)); /* clear */ |
231 |
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232 |
for (i = 0; i < 6; i++) { |
for (i = 0; i < 6; i++) { |
233 |
uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); |
uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); |
250 |
dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0; |
dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0; |
251 |
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252 |
if (dc_size > 8) { |
if (dc_size > 8) { |
253 |
BitstreamSkip(bs, 1); // marker |
BitstreamSkip(bs, 1); /* marker */ |
254 |
} |
} |
255 |
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256 |
block[i * 64 + 0] = dc_dif; |
block[i * 64 + 0] = dc_dif; |
262 |
} |
} |
263 |
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|
264 |
start_timer(); |
start_timer(); |
265 |
if (cbp & (1 << (5 - i))) // coded |
if (cbp & (1 << (5 - i))) /* coded */ |
266 |
{ |
{ |
267 |
int direction = dec->alternate_vertical_scan ? |
get_intra_block(bs, &block[i * 64], pMB->acpred_directions[i], |
268 |
2 : pMB->acpred_directions[i]; |
start_coeff); |
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get_intra_block(bs, &block[i * 64], direction, start_coeff); |
|
269 |
} |
} |
270 |
stop_coding_timer(); |
stop_coding_timer(); |
271 |
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|
284 |
start_timer(); |
start_timer(); |
285 |
idct(&data[i * 64]); |
idct(&data[i * 64]); |
286 |
stop_idct_timer(); |
stop_idct_timer(); |
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|
287 |
} |
} |
288 |
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|
289 |
if (dec->interlacing && pMB->field_dct) { |
if (dec->interlacing && pMB->field_dct) { |
292 |
} |
} |
293 |
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|
294 |
start_timer(); |
start_timer(); |
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if (reduced_resolution) |
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{ |
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next_block*=2; |
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copy_upsampled_8x8_16to8(pY_Cur, &data[0 * 64], stride); |
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copy_upsampled_8x8_16to8(pY_Cur + 16, &data[1 * 64], stride); |
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copy_upsampled_8x8_16to8(pY_Cur + next_block, &data[2 * 64], stride); |
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copy_upsampled_8x8_16to8(pY_Cur + 16 + next_block, &data[3 * 64], stride); |
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copy_upsampled_8x8_16to8(pU_Cur, &data[4 * 64], stride2); |
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copy_upsampled_8x8_16to8(pV_Cur, &data[5 * 64], stride2); |
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}else{ |
|
295 |
transfer_16to8copy(pY_Cur, &data[0 * 64], stride); |
transfer_16to8copy(pY_Cur, &data[0 * 64], stride); |
296 |
transfer_16to8copy(pY_Cur + 8, &data[1 * 64], stride); |
transfer_16to8copy(pY_Cur + 8, &data[1 * 64], stride); |
297 |
transfer_16to8copy(pY_Cur + next_block, &data[2 * 64], stride); |
transfer_16to8copy(pY_Cur + next_block, &data[2 * 64], stride); |
298 |
transfer_16to8copy(pY_Cur + 8 + next_block, &data[3 * 64], stride); |
transfer_16to8copy(pY_Cur + 8 + next_block, &data[3 * 64], stride); |
299 |
transfer_16to8copy(pU_Cur, &data[4 * 64], stride2); |
transfer_16to8copy(pU_Cur, &data[4 * 64], stride2); |
300 |
transfer_16to8copy(pV_Cur, &data[5 * 64], stride2); |
transfer_16to8copy(pV_Cur, &data[5 * 64], stride2); |
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} |
|
301 |
stop_transfer_timer(); |
stop_transfer_timer(); |
302 |
} |
} |
303 |
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307 |
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308 |
#define SIGN(X) (((X)>0)?1:-1) |
#define SIGN(X) (((X)>0)?1:-1) |
309 |
#define ABS(X) (((X)>0)?(X):-(X)) |
#define ABS(X) (((X)>0)?(X):-(X)) |
310 |
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static const uint32_t roundtab[16] = |
311 |
|
{ 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2 }; |
312 |
|
|
313 |
|
|
314 |
// decode an inter macroblock |
/* decode an inter macroblock */ |
315 |
|
|
316 |
void |
void |
317 |
decoder_mbinter(DECODER * dec, |
decoder_mbinter(DECODER * dec, |
322 |
const uint32_t cbp, |
const uint32_t cbp, |
323 |
Bitstream * bs, |
Bitstream * bs, |
324 |
const uint32_t quant, |
const uint32_t quant, |
325 |
const uint32_t rounding, |
const uint32_t rounding) |
|
const int reduced_resolution) |
|
326 |
{ |
{ |
327 |
|
|
328 |
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
330 |
|
|
331 |
uint32_t stride = dec->edged_width; |
uint32_t stride = dec->edged_width; |
332 |
uint32_t stride2 = stride / 2; |
uint32_t stride2 = stride / 2; |
333 |
uint32_t next_block = stride * (reduced_resolution ? 16 : 8); |
uint32_t next_block = stride * 8; |
334 |
uint32_t i; |
uint32_t i; |
335 |
uint32_t iQuant = pMB->quant; |
uint32_t iQuant = pMB->quant; |
336 |
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
|
|
|
337 |
int uv_dx, uv_dy; |
int uv_dx, uv_dy; |
|
VECTOR mv[4]; /* local copy of mvs */ |
|
338 |
|
|
|
if (reduced_resolution) { |
|
|
pY_Cur = dec->cur.y + (y_pos << 5) * stride + (x_pos << 5); |
|
|
pU_Cur = dec->cur.u + (y_pos << 4) * stride2 + (x_pos << 4); |
|
|
pV_Cur = dec->cur.v + (y_pos << 4) * stride2 + (x_pos << 4); |
|
|
for (i = 0; i < 4; i++) { |
|
|
mv[i].x = RRV_MV_SCALEUP(pMB->mvs[i].x); |
|
|
mv[i].y = RRV_MV_SCALEUP(pMB->mvs[i].y); |
|
|
} |
|
|
}else{ |
|
339 |
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
340 |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
341 |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
|
for (i = 0; i < 4; i++) |
|
|
mv[i] = pMB->mvs[i]; |
|
|
} |
|
342 |
|
|
343 |
if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) { |
if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) { |
344 |
uv_dx = mv[0].x; |
uv_dx = pMB->mvs[0].x; |
345 |
uv_dy = mv[0].y; |
uv_dy = pMB->mvs[0].y; |
|
|
|
|
if (dec->quarterpel) |
|
|
{ |
|
|
uv_dx /= 2; |
|
|
uv_dy /= 2; |
|
|
} |
|
346 |
|
|
347 |
uv_dx = (uv_dx >> 1) + roundtab_79[uv_dx & 0x3]; |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
348 |
uv_dy = (uv_dy >> 1) + roundtab_79[uv_dy & 0x3]; |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
349 |
|
} else { |
350 |
|
int sum; |
351 |
|
sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
352 |
|
|
353 |
start_timer(); |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2)); |
|
if (reduced_resolution) |
|
|
{ |
|
|
interpolate32x32_switch(dec->cur.y, dec->refn[0].y, 32*x_pos, 32*y_pos, |
|
|
mv[0].x, mv[0].y, stride, rounding); |
|
|
interpolate16x16_switch(dec->cur.u, dec->refn[0].u, 16 * x_pos, 16 * y_pos, |
|
|
uv_dx, uv_dy, stride2, rounding); |
|
|
interpolate16x16_switch(dec->cur.v, dec->refn[0].v, 16 * x_pos, 16 * y_pos, |
|
|
uv_dx, uv_dy, stride2, rounding); |
|
354 |
|
|
355 |
} |
sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
|
else |
|
|
{ |
|
|
if(dec->quarterpel) { |
|
|
interpolate16x16_quarterpel(dec->cur.y, dec->refn[0].y, dec->qtmp.y, dec->qtmp.y + 64, |
|
|
dec->qtmp.y + 128, 16*x_pos, 16*y_pos, |
|
|
mv[0].x, mv[0].y, stride, rounding); |
|
|
} |
|
|
else { |
|
|
interpolate16x16_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos, |
|
|
mv[0].x, mv[0].y, stride, rounding); |
|
|
} |
|
356 |
|
|
357 |
interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8 * x_pos, 8 * y_pos, |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2)); |
|
uv_dx, uv_dy, stride2, rounding); |
|
|
interpolate8x8_switch(dec->cur.v, dec->refn[0].v, 8 * x_pos, 8 * y_pos, |
|
|
uv_dx, uv_dy, stride2, rounding); |
|
358 |
} |
} |
|
stop_comp_timer(); |
|
|
|
|
|
} else { /* MODE_INTER4V */ |
|
|
int sum; |
|
|
|
|
|
if(dec->quarterpel) |
|
|
sum = (mv[0].x / 2) + (mv[1].x / 2) + (mv[2].x / 2) + (mv[3].x / 2); |
|
|
else |
|
|
sum = mv[0].x + mv[1].x + mv[2].x + mv[3].x; |
|
|
|
|
|
uv_dx = (sum >> 3) + roundtab_76[sum & 0xf]; |
|
|
|
|
|
if(dec->quarterpel) |
|
|
sum = (mv[0].y / 2) + (mv[1].y / 2) + (mv[2].y / 2) + (mv[3].y / 2); |
|
|
else |
|
|
sum = mv[0].y + mv[1].y + mv[2].y + mv[3].y; |
|
|
|
|
|
uv_dy = (sum >> 3) + roundtab_76[sum & 0xf]; |
|
359 |
|
|
360 |
start_timer(); |
start_timer(); |
|
if (reduced_resolution) |
|
|
{ |
|
|
interpolate16x16_switch(dec->cur.y, dec->refn[0].y, 32*x_pos, 32*y_pos, |
|
|
mv[0].x, mv[0].y, stride, rounding); |
|
|
interpolate16x16_switch(dec->cur.y, dec->refn[0].y, 32*x_pos + 16, 32*y_pos, |
|
|
mv[1].x, mv[1].y, stride, rounding); |
|
|
interpolate16x16_switch(dec->cur.y, dec->refn[0].y, 32*x_pos, 32*y_pos + 16, |
|
|
mv[2].x, mv[2].y, stride, rounding); |
|
|
interpolate16x16_switch(dec->cur.y, dec->refn[0].y, 32*x_pos + 16, 32*y_pos + 16, |
|
|
mv[3].x, mv[3].y, stride, rounding); |
|
|
interpolate16x16_switch(dec->cur.u, dec->refn[0].u, 16 * x_pos, 16 * y_pos, |
|
|
uv_dx, uv_dy, stride2, rounding); |
|
|
interpolate16x16_switch(dec->cur.v, dec->refn[0].v, 16 * x_pos, 16 * y_pos, |
|
|
uv_dx, uv_dy, stride2, rounding); |
|
|
|
|
|
// set_block(pY_Cur, stride, 32, 32, 127); |
|
|
} |
|
|
else |
|
|
{ |
|
|
if(dec->quarterpel) { |
|
|
interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, dec->qtmp.y, dec->qtmp.y + 64, |
|
|
dec->qtmp.y + 128, 16*x_pos, 16*y_pos, |
|
|
mv[0].x, mv[0].y, stride, rounding); |
|
|
interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, dec->qtmp.y, dec->qtmp.y + 64, |
|
|
dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos, |
|
|
mv[1].x, mv[1].y, stride, rounding); |
|
|
interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, dec->qtmp.y, dec->qtmp.y + 64, |
|
|
dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8, |
|
|
mv[2].x, mv[2].y, stride, rounding); |
|
|
interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, dec->qtmp.y, dec->qtmp.y + 64, |
|
|
dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8, |
|
|
mv[3].x, mv[3].y, stride, rounding); |
|
|
} |
|
|
else { |
|
361 |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos, |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos, |
362 |
mv[0].x, mv[0].y, stride, rounding); |
pMB->mvs[0].x, pMB->mvs[0].y, stride, rounding); |
363 |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos, |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos, |
364 |
mv[1].x, mv[1].y, stride, rounding); |
pMB->mvs[1].x, pMB->mvs[1].y, stride, rounding); |
365 |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos + 8, |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos + 8, |
366 |
mv[2].x, mv[2].y, stride, rounding); |
pMB->mvs[2].x, pMB->mvs[2].y, stride, rounding); |
367 |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos + 8, |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos + 8, |
368 |
mv[3].x, mv[3].y, stride, rounding); |
pMB->mvs[3].x, pMB->mvs[3].y, stride, rounding); |
|
} |
|
|
|
|
369 |
interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8 * x_pos, 8 * y_pos, |
interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8 * x_pos, 8 * y_pos, |
370 |
uv_dx, uv_dy, stride2, rounding); |
uv_dx, uv_dy, stride2, rounding); |
371 |
interpolate8x8_switch(dec->cur.v, dec->refn[0].v, 8 * x_pos, 8 * y_pos, |
interpolate8x8_switch(dec->cur.v, dec->refn[0].v, 8 * x_pos, 8 * y_pos, |
372 |
uv_dx, uv_dy, stride2, rounding); |
uv_dx, uv_dy, stride2, rounding); |
|
} |
|
373 |
stop_comp_timer(); |
stop_comp_timer(); |
|
} |
|
374 |
|
|
375 |
for (i = 0; i < 6; i++) { |
for (i = 0; i < 6; i++) { |
376 |
int direction = dec->alternate_vertical_scan ? 2 : 0; |
if (cbp & (1 << (5 - i))) /* coded */ |
|
|
|
|
if (cbp & (1 << (5 - i))) // coded |
|
377 |
{ |
{ |
378 |
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear |
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); /* clear */ |
379 |
|
|
380 |
start_timer(); |
start_timer(); |
381 |
get_inter_block(bs, &block[i * 64], direction); |
get_inter_block(bs, &block[i * 64]); |
382 |
stop_coding_timer(); |
stop_coding_timer(); |
383 |
|
|
384 |
start_timer(); |
start_timer(); |
401 |
} |
} |
402 |
|
|
403 |
start_timer(); |
start_timer(); |
|
if (reduced_resolution) |
|
|
{ |
|
|
if (cbp & 32) |
|
|
add_upsampled_8x8_16to8(pY_Cur, &data[0 * 64], stride); |
|
|
if (cbp & 16) |
|
|
add_upsampled_8x8_16to8(pY_Cur + 16, &data[1 * 64], stride); |
|
|
if (cbp & 8) |
|
|
add_upsampled_8x8_16to8(pY_Cur + next_block, &data[2 * 64], stride); |
|
|
if (cbp & 4) |
|
|
add_upsampled_8x8_16to8(pY_Cur + 16 + next_block, &data[3 * 64], stride); |
|
|
if (cbp & 2) |
|
|
add_upsampled_8x8_16to8(pU_Cur, &data[4 * 64], stride2); |
|
|
if (cbp & 1) |
|
|
add_upsampled_8x8_16to8(pV_Cur, &data[5 * 64], stride2); |
|
|
} |
|
|
else |
|
|
{ |
|
404 |
if (cbp & 32) |
if (cbp & 32) |
405 |
transfer_16to8add(pY_Cur, &data[0 * 64], stride); |
transfer_16to8add(pY_Cur, &data[0 * 64], stride); |
406 |
if (cbp & 16) |
if (cbp & 16) |
413 |
transfer_16to8add(pU_Cur, &data[4 * 64], stride2); |
transfer_16to8add(pU_Cur, &data[4 * 64], stride2); |
414 |
if (cbp & 1) |
if (cbp & 1) |
415 |
transfer_16to8add(pV_Cur, &data[5 * 64], stride2); |
transfer_16to8add(pV_Cur, &data[5 * 64], stride2); |
|
} |
|
416 |
stop_transfer_timer(); |
stop_transfer_timer(); |
417 |
} |
} |
418 |
|
|
420 |
void |
void |
421 |
decoder_iframe(DECODER * dec, |
decoder_iframe(DECODER * dec, |
422 |
Bitstream * bs, |
Bitstream * bs, |
|
int reduced_resolution, |
|
423 |
int quant, |
int quant, |
424 |
int intra_dc_threshold) |
int intra_dc_threshold) |
425 |
{ |
{ |
426 |
uint32_t bound; |
uint32_t bound; |
427 |
uint32_t x, y; |
uint32_t x, y; |
|
uint32_t mb_width = dec->mb_width; |
|
|
uint32_t mb_height = dec->mb_height; |
|
|
|
|
|
if (reduced_resolution) |
|
|
{ |
|
|
mb_width = (dec->width + 31) / 32; |
|
|
mb_height = (dec->height + 31) / 32; |
|
|
} |
|
428 |
|
|
429 |
bound = 0; |
bound = 0; |
430 |
|
|
431 |
for (y = 0; y < mb_height; y++) { |
for (y = 0; y < dec->mb_height; y++) { |
432 |
for (x = 0; x < mb_width; x++) { |
for (x = 0; x < dec->mb_width; x++) { |
433 |
MACROBLOCK *mb; |
MACROBLOCK *mb; |
434 |
uint32_t mcbpc; |
uint32_t mcbpc; |
435 |
uint32_t cbpc; |
uint32_t cbpc; |
442 |
|
|
443 |
if (check_resync_marker(bs, 0)) |
if (check_resync_marker(bs, 0)) |
444 |
{ |
{ |
445 |
bound = read_video_packet_header(bs, dec, 0, |
bound = read_video_packet_header(bs, 0, &quant); |
446 |
&quant, NULL, NULL, &intra_dc_threshold); |
x = bound % dec->mb_width; |
447 |
x = bound % mb_width; |
y = bound / dec->mb_width; |
|
y = bound / mb_width; |
|
448 |
} |
} |
449 |
mb = &dec->mbs[y * dec->mb_width + x]; |
mb = &dec->mbs[y * dec->mb_width + x]; |
450 |
|
|
475 |
|
|
476 |
if (dec->interlacing) { |
if (dec->interlacing) { |
477 |
mb->field_dct = BitstreamGetBit(bs); |
mb->field_dct = BitstreamGetBit(bs); |
478 |
DPRINTF(DPRINTF_MB,"deci: field_dct: %i", mb->field_dct); |
DPRINTF(DPRINTF_DEBUG, "deci: field_dct: %d", mb->field_dct); |
479 |
} |
} |
480 |
|
|
481 |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
482 |
intra_dc_threshold, bound, reduced_resolution); |
intra_dc_threshold, bound); |
|
|
|
483 |
} |
} |
484 |
if(dec->out_frm) |
if(dec->out_frm) |
485 |
output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,0,y,mb_width); |
output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,0,y,dec->mb_width); |
486 |
|
|
487 |
} |
} |
488 |
|
|
489 |
} |
} |
495 |
int x, |
int x, |
496 |
int y, |
int y, |
497 |
int k, |
int k, |
498 |
VECTOR * ret_mv, |
VECTOR * mv, |
499 |
int fcode, |
int fcode, |
500 |
const int bound) |
const int bound) |
501 |
{ |
{ |
506 |
int range = (64 * scale_fac); |
int range = (64 * scale_fac); |
507 |
|
|
508 |
VECTOR pmv; |
VECTOR pmv; |
509 |
VECTOR mv; |
int mv_x, mv_y; |
510 |
|
|
511 |
pmv = get_pmv2(dec->mbs, dec->mb_width, bound, x, y, k); |
pmv = get_pmv2(dec->mbs, dec->mb_width, bound, x, y, k); |
512 |
|
|
513 |
mv.x = get_mv(bs, fcode); |
mv_x = get_mv(bs, fcode); |
514 |
mv.y = get_mv(bs, fcode); |
mv_y = get_mv(bs, fcode); |
|
|
|
|
DPRINTF(DPRINTF_MV,"mv_diff (%i,%i) pred (%i,%i)", mv.x, mv.y, pmv.x, pmv.y); |
|
515 |
|
|
516 |
mv.x += pmv.x; |
DPRINTF(DPRINTF_MV,"mv_diff (%i,%i) pred (%i,%i)", mv_x, mv_y, pmv.x, pmv.y); |
|
mv.y += pmv.y; |
|
517 |
|
|
518 |
if (mv.x < low) { |
mv_x += pmv.x; |
519 |
mv.x += range; |
mv_y += pmv.y; |
|
} else if (mv.x > high) { |
|
|
mv.x -= range; |
|
|
} |
|
520 |
|
|
521 |
if (mv.y < low) { |
if (mv_x < low) { |
522 |
mv.y += range; |
mv_x += range; |
523 |
} else if (mv.y > high) { |
} else if (mv_x > high) { |
524 |
mv.y -= range; |
mv_x -= range; |
525 |
} |
} |
526 |
|
|
527 |
ret_mv->x = mv.x; |
if (mv_y < low) { |
528 |
ret_mv->y = mv.y; |
mv_y += range; |
529 |
|
} else if (mv_y > high) { |
530 |
|
mv_y -= range; |
531 |
} |
} |
532 |
|
|
533 |
|
mv->x = mv_x; |
534 |
|
mv->y = mv_y; |
535 |
|
|
|
|
|
|
static __inline int gmc_sanitize(int value, int quarterpel, int fcode) |
|
|
{ |
|
|
int length = 1 << (fcode+4); |
|
|
|
|
|
if (quarterpel) value *= 2; |
|
|
|
|
|
if (value < -length) |
|
|
return -length; |
|
|
else if (value >= length) |
|
|
return length-1; |
|
|
else return value; |
|
536 |
} |
} |
537 |
|
|
538 |
|
|
|
/* for P_VOP set gmc_mv to NULL */ |
|
539 |
void |
void |
540 |
decoder_pframe(DECODER * dec, |
decoder_pframe(DECODER * dec, |
541 |
Bitstream * bs, |
Bitstream * bs, |
542 |
int rounding, |
int rounding, |
|
int reduced_resolution, |
|
543 |
int quant, |
int quant, |
544 |
int fcode, |
int fcode, |
545 |
int intra_dc_threshold, |
int intra_dc_threshold) |
|
VECTOR * gmc_mv) |
|
546 |
{ |
{ |
547 |
|
|
548 |
uint32_t x, y; |
uint32_t x, y; |
549 |
uint32_t bound; |
uint32_t bound; |
550 |
int cp_mb, st_mb; |
int cp_mb, st_mb; |
|
uint32_t mb_width = dec->mb_width; |
|
|
uint32_t mb_height = dec->mb_height; |
|
|
|
|
|
if (reduced_resolution) |
|
|
{ |
|
|
mb_width = (dec->width + 31) / 32; |
|
|
mb_height = (dec->height + 31) / 32; |
|
|
} |
|
551 |
|
|
552 |
start_timer(); |
start_timer(); |
553 |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
556 |
|
|
557 |
bound = 0; |
bound = 0; |
558 |
|
|
559 |
for (y = 0; y < mb_height; y++) { |
for (y = 0; y < dec->mb_height; y++) { |
560 |
cp_mb = st_mb = 0; |
cp_mb = st_mb = 0; |
561 |
for (x = 0; x < mb_width; x++) { |
for (x = 0; x < dec->mb_width; x++) { |
562 |
MACROBLOCK *mb; |
MACROBLOCK *mb; |
563 |
|
|
564 |
// skip stuffing |
/* skip stuffing */ |
565 |
while (BitstreamShowBits(bs, 10) == 1) |
while (BitstreamShowBits(bs, 10) == 1) |
566 |
BitstreamSkip(bs, 10); |
BitstreamSkip(bs, 10); |
567 |
|
|
568 |
if (check_resync_marker(bs, fcode - 1)) |
if (check_resync_marker(bs, fcode - 1)) |
569 |
{ |
{ |
570 |
bound = read_video_packet_header(bs, dec, fcode - 1, |
bound = read_video_packet_header(bs, fcode - 1, &quant); |
571 |
&quant, &fcode, NULL, &intra_dc_threshold); |
x = bound % dec->mb_width; |
572 |
x = bound % mb_width; |
y = bound / dec->mb_width; |
|
y = bound / mb_width; |
|
573 |
} |
} |
574 |
mb = &dec->mbs[y * dec->mb_width + x]; |
mb = &dec->mbs[y * dec->mb_width + x]; |
575 |
|
|
576 |
DPRINTF(DPRINTF_MB, "macroblock (%i,%i) %08x", x, y, BitstreamShowBits(bs, 32)); |
DPRINTF(DPRINTF_MB, "macroblock (%i,%i) %08x", x, y, BitstreamShowBits(bs, 32)); |
577 |
|
|
578 |
//if (!(dec->mb_skip[y*dec->mb_width + x]=BitstreamGetBit(bs))) // not_coded |
/*if (!(dec->mb_skip[y*dec->mb_width + x]=BitstreamGetBit(bs))) not_coded */ |
579 |
if (!(BitstreamGetBit(bs))) // not_coded |
if (!(BitstreamGetBit(bs))) /* not_coded */ |
580 |
{ |
{ |
581 |
uint32_t mcbpc; |
uint32_t mcbpc; |
582 |
uint32_t cbpc; |
uint32_t cbpc; |
584 |
uint32_t cbpy; |
uint32_t cbpy; |
585 |
uint32_t cbp; |
uint32_t cbp; |
586 |
uint32_t intra; |
uint32_t intra; |
|
int mcsel = 0; // mcsel: '0'=local motion, '1'=GMC |
|
587 |
|
|
588 |
cp_mb++; |
cp_mb++; |
589 |
mcbpc = get_mcbpc_inter(bs); |
mcbpc = get_mcbpc_inter(bs); |
600 |
acpred_flag = BitstreamGetBit(bs); |
acpred_flag = BitstreamGetBit(bs); |
601 |
} |
} |
602 |
|
|
|
if (gmc_mv && (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q)) |
|
|
{ |
|
|
mcsel = BitstreamGetBit(bs); |
|
|
} |
|
|
|
|
603 |
cbpy = get_cbpy(bs, intra); |
cbpy = get_cbpy(bs, intra); |
604 |
DPRINTF(DPRINTF_MB, "cbpy %i", cbpy); |
DPRINTF(DPRINTF_MB, "cbpy %i", cbpy); |
605 |
|
|
621 |
if (dec->interlacing) { |
if (dec->interlacing) { |
622 |
if (cbp || intra) { |
if (cbp || intra) { |
623 |
mb->field_dct = BitstreamGetBit(bs); |
mb->field_dct = BitstreamGetBit(bs); |
624 |
DPRINTF(DPRINTF_MB,"decp: field_dct: %i", mb->field_dct); |
DPRINTF(DPRINTF_DEBUG, "decp: field_dct: %d", mb->field_dct); |
625 |
} |
} |
626 |
|
|
627 |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
628 |
mb->field_pred = BitstreamGetBit(bs); |
mb->field_pred = BitstreamGetBit(bs); |
629 |
DPRINTF(DPRINTF_MB, "decp: field_pred: %i", mb->field_pred); |
DPRINTF(DPRINTF_DEBUG, "decp: field_pred: %d", mb->field_pred); |
630 |
|
|
631 |
if (mb->field_pred) { |
if (mb->field_pred) { |
632 |
mb->field_for_top = BitstreamGetBit(bs); |
mb->field_for_top = BitstreamGetBit(bs); |
633 |
DPRINTF(DPRINTF_MB,"decp: field_for_top: %i", mb->field_for_top); |
DPRINTF(DPRINTF_DEBUG, "decp: field_for_top: %d", mb->field_for_top); |
634 |
mb->field_for_bot = BitstreamGetBit(bs); |
mb->field_for_bot = BitstreamGetBit(bs); |
635 |
DPRINTF(DPRINTF_MB,"decp: field_for_bot: %i", mb->field_for_bot); |
DPRINTF(DPRINTF_DEBUG, "decp: field_for_bot: %d", mb->field_for_bot); |
636 |
} |
} |
637 |
} |
} |
638 |
} |
} |
639 |
|
|
640 |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
641 |
|
if (dec->interlacing && mb->field_pred) { |
|
if (mcsel) |
|
|
{ |
|
|
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = gmc_sanitize(gmc_mv[0].x, dec->quarterpel, fcode); |
|
|
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = gmc_sanitize(gmc_mv[0].y, dec->quarterpel, fcode); |
|
|
|
|
|
} else if (dec->interlacing && mb->field_pred) { |
|
642 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
643 |
fcode, bound); |
fcode, bound); |
644 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], |
657 |
get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode, bound); |
get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode, bound); |
658 |
get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode, bound); |
get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode, bound); |
659 |
get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode, bound); |
get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode, bound); |
660 |
} else // MODE_INTRA, MODE_INTRA_Q |
} else /* MODE_INTRA, MODE_INTRA_Q */ |
661 |
{ |
{ |
662 |
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
663 |
0; |
0; |
664 |
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
665 |
0; |
0; |
666 |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
667 |
intra_dc_threshold, bound, reduced_resolution); |
intra_dc_threshold, bound); |
668 |
continue; |
continue; |
669 |
} |
} |
670 |
|
|
671 |
decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
672 |
rounding, reduced_resolution); |
rounding); |
673 |
|
} else /* not coded */ |
|
} |
|
|
else if (gmc_mv) /* not coded S_VOP macroblock */ |
|
|
{ |
|
|
mb->mode = MODE_NOT_CODED; |
|
|
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = gmc_sanitize(gmc_mv[0].x, dec->quarterpel, fcode); |
|
|
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = gmc_sanitize(gmc_mv[0].y, dec->quarterpel, fcode); |
|
|
decoder_mbinter(dec, mb, x, y, 0, 0, bs, quant, rounding, reduced_resolution); |
|
|
} |
|
|
else /* not coded P_VOP macroblock */ |
|
674 |
{ |
{ |
675 |
mb->mode = MODE_NOT_CODED; |
DPRINTF(DPRINTF_DEBUG, "P-frame MB at (X,Y)=(%d,%d)", x, y); |
676 |
|
|
677 |
|
mb->mode = MODE_NOT_CODED; |
678 |
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0; |
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0; |
679 |
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; |
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; |
|
// copy macroblock directly from ref to cur |
|
680 |
|
|
681 |
start_timer(); |
/* copy macroblock directly from ref to cur */ |
|
|
|
|
if (reduced_resolution) |
|
|
{ |
|
|
transfer32x32_copy(dec->cur.y + (32*y)*dec->edged_width + (32*x), |
|
|
dec->refn[0].y + (32*y)*dec->edged_width + (32*x), |
|
|
dec->edged_width); |
|
|
|
|
|
transfer16x16_copy(dec->cur.u + (16*y)*dec->edged_width/2 + (16*x), |
|
|
dec->refn[0].u + (16*y)*dec->edged_width/2 + (16*x), |
|
|
dec->edged_width/2); |
|
682 |
|
|
683 |
transfer16x16_copy(dec->cur.v + (16*y)*dec->edged_width/2 + (16*x), |
start_timer(); |
|
dec->refn[0].v + (16*y)*dec->edged_width/2 + (16*x), |
|
|
dec->edged_width/2); |
|
|
} |
|
|
else |
|
|
{ |
|
|
transfer16x16_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x), |
|
|
dec->refn[0].y + (16*y)*dec->edged_width + (16*x), |
|
|
dec->edged_width); |
|
684 |
|
|
685 |
transfer8x8_copy(dec->cur.u + (8*y)*dec->edged_width/2 + (8*x), |
transfer8x8_copy(dec->cur.y + (16 * y) * dec->edged_width + |
686 |
dec->refn[0].u + (8*y)*dec->edged_width/2 + (8*x), |
(16 * x), |
687 |
|
dec->refn[0].y + (16 * y) * dec->edged_width + |
688 |
|
(16 * x), dec->edged_width); |
689 |
|
|
690 |
|
transfer8x8_copy(dec->cur.y + (16 * y) * dec->edged_width + |
691 |
|
(16 * x + 8), |
692 |
|
dec->refn[0].y + (16 * y) * dec->edged_width + |
693 |
|
(16 * x + 8), dec->edged_width); |
694 |
|
|
695 |
|
transfer8x8_copy(dec->cur.y + (16 * y + 8) * dec->edged_width + |
696 |
|
(16 * x), |
697 |
|
dec->refn[0].y + (16 * y + |
698 |
|
8) * dec->edged_width + |
699 |
|
(16 * x), dec->edged_width); |
700 |
|
|
701 |
|
transfer8x8_copy(dec->cur.y + (16 * y + 8) * dec->edged_width + |
702 |
|
(16 * x + 8), |
703 |
|
dec->refn[0].y + (16 * y + |
704 |
|
8) * dec->edged_width + |
705 |
|
(16 * x + 8), dec->edged_width); |
706 |
|
|
707 |
|
transfer8x8_copy(dec->cur.u + (8 * y) * dec->edged_width / 2 + |
708 |
|
(8 * x), |
709 |
|
dec->refn[0].u + |
710 |
|
(8 * y) * dec->edged_width / 2 + (8 * x), |
711 |
dec->edged_width/2); |
dec->edged_width/2); |
712 |
|
|
713 |
transfer8x8_copy(dec->cur.v + (8*y)*dec->edged_width/2 + (8*x), |
transfer8x8_copy(dec->cur.v + (8 * y) * dec->edged_width / 2 + |
714 |
dec->refn[0].v + (8*y)*dec->edged_width/2 + (8*x), |
(8 * x), |
715 |
|
dec->refn[0].v + |
716 |
|
(8 * y) * dec->edged_width / 2 + (8 * x), |
717 |
dec->edged_width/2); |
dec->edged_width/2); |
|
} |
|
|
|
|
718 |
stop_transfer_timer(); |
stop_transfer_timer(); |
|
|
|
719 |
if(dec->out_frm && cp_mb > 0) { |
if(dec->out_frm && cp_mb > 0) { |
720 |
output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb); |
output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb); |
721 |
cp_mb = 0; |
cp_mb = 0; |
728 |
} |
} |
729 |
} |
} |
730 |
|
|
731 |
|
/* swap two MACROBLOCK array */ |
|
// add by MinChen <chenm001@163.com> |
|
|
// decode B-frame motion vector |
|
732 |
void |
void |
733 |
get_b_motion_vector(DECODER * dec, |
mb_swap(MACROBLOCK ** mb1, |
734 |
Bitstream * bs, |
MACROBLOCK ** mb2) |
|
int x, |
|
|
int y, |
|
|
VECTOR * mv, |
|
|
int fcode, |
|
|
const VECTOR pmv) |
|
735 |
{ |
{ |
736 |
int scale_fac = 1 << (fcode - 1); |
MACROBLOCK *temp = *mb1; |
|
int high = (32 * scale_fac) - 1; |
|
|
int low = ((-32) * scale_fac); |
|
|
int range = (64 * scale_fac); |
|
737 |
|
|
738 |
int mv_x, mv_y; |
*mb1 = *mb2; |
739 |
int pmv_x, pmv_y; |
*mb2 = temp; |
740 |
|
} |
741 |
|
|
742 |
pmv_x = pmv.x; |
int |
743 |
pmv_y = pmv.y; |
decoder_decode(DECODER * dec, |
744 |
|
XVID_DEC_FRAME * frame) |
745 |
|
{ |
746 |
|
|
747 |
mv_x = get_mv(bs, fcode); |
Bitstream bs; |
748 |
mv_y = get_mv(bs, fcode); |
uint32_t rounding; |
749 |
|
uint32_t quant; |
750 |
|
uint32_t fcode_forward; |
751 |
|
uint32_t fcode_backward; |
752 |
|
uint32_t intra_dc_threshold; |
753 |
|
uint32_t vop_type; |
754 |
|
|
755 |
mv_x += pmv_x; |
start_global_timer(); |
|
mv_y += pmv_y; |
|
756 |
|
|
757 |
if (mv_x < low) { |
dec->out_frm = (frame->colorspace == XVID_CSP_EXTERN) ? frame->image : NULL; |
|
mv_x += range; |
|
|
} else if (mv_x > high) { |
|
|
mv_x -= range; |
|
|
} |
|
758 |
|
|
759 |
if (mv_y < low) { |
BitstreamInit(&bs, frame->bitstream, frame->length); |
|
mv_y += range; |
|
|
} else if (mv_y > high) { |
|
|
mv_y -= range; |
|
|
} |
|
760 |
|
|
761 |
mv->x = mv_x; |
/* add by chenm001 <chenm001@163.com> */ |
762 |
mv->y = mv_y; |
/* for support B-frame to reference last 2 frame */ |
763 |
} |
dec->frames++; |
764 |
|
vop_type = |
765 |
|
BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode_forward, |
766 |
|
&fcode_backward, &intra_dc_threshold); |
767 |
|
|
768 |
|
dec->p_bmv.x = dec->p_bmv.y = dec->p_fmv.y = dec->p_fmv.y = 0; /* init pred vector to 0 */ |
769 |
|
|
770 |
// add by MinChen <chenm001@163.com> |
switch (vop_type) { |
771 |
// decode an B-frame forward & backward inter macroblock |
case P_VOP: |
772 |
void |
decoder_pframe(dec, &bs, rounding, quant, fcode_forward, |
773 |
decoder_bf_mbinter(DECODER * dec, |
intra_dc_threshold); |
774 |
const MACROBLOCK * pMB, |
break; |
|
const uint32_t x_pos, |
|
|
const uint32_t y_pos, |
|
|
const uint32_t cbp, |
|
|
Bitstream * bs, |
|
|
const uint32_t quant, |
|
|
const uint8_t ref) |
|
|
{ |
|
775 |
|
|
776 |
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
case I_VOP: |
777 |
DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
778 |
|
break; |
779 |
|
case B_VOP: |
780 |
|
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
781 |
|
break; |
782 |
|
case N_VOP: |
783 |
|
/* when low_delay==0, N_VOP's should interpolate between the past and future frames */ |
784 |
|
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
785 |
|
break; |
786 |
|
|
787 |
uint32_t stride = dec->edged_width; |
default: |
788 |
uint32_t stride2 = stride / 2; |
return XVID_ERR_FAIL; |
789 |
uint32_t next_block = stride * 8; |
} |
|
uint32_t i; |
|
|
uint32_t iQuant = pMB->quant; |
|
|
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
|
|
int uv_dx, uv_dy; |
|
790 |
|
|
791 |
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
frame->length = BitstreamPos(&bs) / 8; |
|
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
|
|
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
|
792 |
|
|
793 |
|
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
794 |
|
frame->image, frame->stride, frame->colorspace); |
795 |
|
|
796 |
if (!(pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
if (vop_type == I_VOP || vop_type == P_VOP) { |
797 |
uv_dx = pMB->mvs[0].x; |
image_swap(&dec->refn[0], &dec->refn[1]); |
798 |
uv_dy = pMB->mvs[0].y; |
image_swap(&dec->cur, &dec->refn[0]); |
799 |
|
|
800 |
if (dec->quarterpel) |
/* swap MACROBLOCK */ |
801 |
{ |
/* the Divx will not set the low_delay flage some times */ |
802 |
uv_dx /= 2; |
/* so follow code will wrong to not swap at that time */ |
803 |
uv_dy /= 2; |
/* this will broken bitstream! so I'm change it, */ |
804 |
} |
/* But that is not the best way! can anyone tell me how */ |
805 |
|
/* to do another way? */ |
806 |
uv_dx = (uv_dx >> 1) + roundtab_79[uv_dx & 0x3]; |
/* 18-07-2002 MinChen<chenm001@163.com> */ |
807 |
uv_dy = (uv_dy >> 1) + roundtab_79[uv_dy & 0x3]; |
/*if (!dec->low_delay && vop_type == P_VOP) */ |
808 |
} else { |
if (vop_type == P_VOP) |
|
int sum; |
|
|
|
|
|
if(dec->quarterpel) |
|
|
sum = (pMB->mvs[0].x / 2) + (pMB->mvs[1].x / 2) + (pMB->mvs[2].x / 2) + (pMB->mvs[3].x / 2); |
|
|
else |
|
|
sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
|
|
|
|
|
uv_dx = (sum >> 3) + roundtab_76[sum & 0xf]; |
|
|
|
|
|
if(dec->quarterpel) |
|
|
sum = (pMB->mvs[0].y / 2) + (pMB->mvs[1].y / 2) + (pMB->mvs[2].y / 2) + (pMB->mvs[3].y / 2); |
|
|
else |
|
|
sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
|
|
|
|
|
uv_dy = (sum >> 3) + roundtab_76[sum & 0xf]; |
|
|
} |
|
|
|
|
|
start_timer(); |
|
|
if(dec->quarterpel) { |
|
|
interpolate16x16_quarterpel(dec->cur.y, dec->refn[ref].y, dec->qtmp.y, dec->qtmp.y + 64, |
|
|
dec->qtmp.y + 128, 16*x_pos, 16*y_pos, |
|
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
|
|
} |
|
|
else { |
|
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16*x_pos, 16*y_pos, |
|
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
|
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16*x_pos + 8, 16*y_pos, |
|
|
pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); |
|
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16*x_pos, 16*y_pos + 8, |
|
|
pMB->mvs[2].x, pMB->mvs[2].y, stride, 0); |
|
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16*x_pos + 8, 16*y_pos + 8, |
|
|
pMB->mvs[3].x, pMB->mvs[3].y, stride, 0); |
|
|
} |
|
|
|
|
|
interpolate8x8_switch(dec->cur.u, dec->refn[ref].u, 8 * x_pos, 8 * y_pos, |
|
|
uv_dx, uv_dy, stride2, 0); |
|
|
interpolate8x8_switch(dec->cur.v, dec->refn[ref].v, 8 * x_pos, 8 * y_pos, |
|
|
uv_dx, uv_dy, stride2, 0); |
|
|
stop_comp_timer(); |
|
|
|
|
|
for (i = 0; i < 6; i++) { |
|
|
int direction = dec->alternate_vertical_scan ? 2 : 0; |
|
|
|
|
|
if (cbp & (1 << (5 - i))) // coded |
|
|
{ |
|
|
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear |
|
|
|
|
|
start_timer(); |
|
|
get_inter_block(bs, &block[i * 64], direction); |
|
|
stop_coding_timer(); |
|
|
|
|
|
start_timer(); |
|
|
if (dec->quant_type == 0) { |
|
|
dequant_inter(&data[i * 64], &block[i * 64], iQuant); |
|
|
} else { |
|
|
dequant4_inter(&data[i * 64], &block[i * 64], iQuant); |
|
|
} |
|
|
stop_iquant_timer(); |
|
|
|
|
|
start_timer(); |
|
|
idct(&data[i * 64]); |
|
|
stop_idct_timer(); |
|
|
} |
|
|
} |
|
|
|
|
|
if (dec->interlacing && pMB->field_dct) { |
|
|
next_block = stride; |
|
|
stride *= 2; |
|
|
} |
|
|
|
|
|
start_timer(); |
|
|
if (cbp & 32) |
|
|
transfer_16to8add(pY_Cur, &data[0 * 64], stride); |
|
|
if (cbp & 16) |
|
|
transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); |
|
|
if (cbp & 8) |
|
|
transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); |
|
|
if (cbp & 4) |
|
|
transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride); |
|
|
if (cbp & 2) |
|
|
transfer_16to8add(pU_Cur, &data[4 * 64], stride2); |
|
|
if (cbp & 1) |
|
|
transfer_16to8add(pV_Cur, &data[5 * 64], stride2); |
|
|
stop_transfer_timer(); |
|
|
} |
|
|
|
|
|
// add by MinChen <chenm001@163.com> |
|
|
// decode an B-frame direct & inter macroblock |
|
|
void |
|
|
decoder_bf_interpolate_mbinter(DECODER * dec, |
|
|
IMAGE forward, |
|
|
IMAGE backward, |
|
|
const MACROBLOCK * pMB, |
|
|
const uint32_t x_pos, |
|
|
const uint32_t y_pos, |
|
|
Bitstream * bs) |
|
|
{ |
|
|
|
|
|
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
|
|
DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
|
|
|
|
|
uint32_t stride = dec->edged_width; |
|
|
uint32_t stride2 = stride / 2; |
|
|
uint32_t next_block = stride * 8; |
|
|
uint32_t iQuant = pMB->quant; |
|
|
int uv_dx, uv_dy; |
|
|
int b_uv_dx, b_uv_dy; |
|
|
uint32_t i; |
|
|
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
|
|
const uint32_t cbp = pMB->cbp; |
|
|
|
|
|
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
|
|
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
|
|
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
|
|
|
|
|
|
|
|
if ((pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
|
|
uv_dx = pMB->mvs[0].x; |
|
|
uv_dy = pMB->mvs[0].y; |
|
|
|
|
|
b_uv_dx = pMB->b_mvs[0].x; |
|
|
b_uv_dy = pMB->b_mvs[0].y; |
|
|
|
|
|
if (dec->quarterpel) |
|
|
{ |
|
|
uv_dx /= 2; |
|
|
uv_dy /= 2; |
|
|
|
|
|
b_uv_dx /= 2; |
|
|
b_uv_dy /= 2; |
|
|
} |
|
|
|
|
|
uv_dx = (uv_dx >> 1) + roundtab_79[uv_dx & 0x3]; |
|
|
uv_dy = (uv_dy >> 1) + roundtab_79[uv_dy & 0x3]; |
|
|
|
|
|
b_uv_dx = (b_uv_dx >> 1) + roundtab_79[b_uv_dx & 0x3]; |
|
|
b_uv_dy = (b_uv_dy >> 1) + roundtab_79[b_uv_dy & 0x3]; |
|
|
} else { |
|
|
int sum; |
|
|
|
|
|
if(dec->quarterpel) |
|
|
sum = (pMB->mvs[0].x / 2) + (pMB->mvs[1].x / 2) + (pMB->mvs[2].x / 2) + (pMB->mvs[3].x / 2); |
|
|
else |
|
|
sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
|
|
|
|
|
uv_dx = (sum >> 3) + roundtab_76[sum & 0xf]; |
|
|
|
|
|
if(dec->quarterpel) |
|
|
sum = (pMB->mvs[0].y / 2) + (pMB->mvs[1].y / 2) + (pMB->mvs[2].y / 2) + (pMB->mvs[3].y / 2); |
|
|
else |
|
|
sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
|
|
|
|
|
uv_dy = (sum >> 3) + roundtab_76[sum & 0xf]; |
|
|
|
|
|
|
|
|
if(dec->quarterpel) |
|
|
sum = (pMB->b_mvs[0].x / 2) + (pMB->b_mvs[1].x / 2) + (pMB->b_mvs[2].x / 2) + (pMB->b_mvs[3].x / 2); |
|
|
else |
|
|
sum = pMB->b_mvs[0].x + pMB->b_mvs[1].x + pMB->b_mvs[2].x + pMB->b_mvs[3].x; |
|
|
|
|
|
b_uv_dx = (sum >> 3) + roundtab_76[sum & 0xf]; |
|
|
|
|
|
if(dec->quarterpel) |
|
|
sum = (pMB->b_mvs[0].y / 2) + (pMB->b_mvs[1].y / 2) + (pMB->b_mvs[2].y / 2) + (pMB->b_mvs[3].y / 2); |
|
|
else |
|
|
sum = pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + pMB->b_mvs[3].y; |
|
|
|
|
|
b_uv_dy = (sum >> 3) + roundtab_76[sum & 0xf]; |
|
|
} |
|
|
|
|
|
|
|
|
start_timer(); |
|
|
if(dec->quarterpel) { |
|
|
if((pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) |
|
|
interpolate16x16_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64, |
|
|
dec->qtmp.y + 128, 16*x_pos, 16*y_pos, |
|
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
|
|
else { |
|
|
interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64, |
|
|
dec->qtmp.y + 128, 16*x_pos, 16*y_pos, |
|
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
|
|
interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64, |
|
|
dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos, |
|
|
pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); |
|
|
interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64, |
|
|
dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8, |
|
|
pMB->mvs[2].x, pMB->mvs[2].y, stride, 0); |
|
|
interpolate8x8_quarterpel(dec->cur.y, forward.y, dec->qtmp.y, dec->qtmp.y + 64, |
|
|
dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8, |
|
|
pMB->mvs[3].x, pMB->mvs[3].y, stride, 0); |
|
|
} |
|
|
} |
|
|
else { |
|
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos, |
|
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
|
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, 16 * y_pos, |
|
|
pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); |
|
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos + 8, |
|
|
pMB->mvs[2].x, pMB->mvs[2].y, stride, 0); |
|
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, |
|
|
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
|
|
0); |
|
|
} |
|
|
|
|
|
interpolate8x8_switch(dec->cur.u, forward.u, 8 * x_pos, 8 * y_pos, uv_dx, |
|
|
uv_dy, stride2, 0); |
|
|
interpolate8x8_switch(dec->cur.v, forward.v, 8 * x_pos, 8 * y_pos, uv_dx, |
|
|
uv_dy, stride2, 0); |
|
|
|
|
|
|
|
|
if(dec->quarterpel) { |
|
|
if((pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) |
|
|
interpolate16x16_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64, |
|
|
dec->qtmp.y + 128, 16*x_pos, 16*y_pos, |
|
|
pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0); |
|
|
else { |
|
|
interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64, |
|
|
dec->qtmp.y + 128, 16*x_pos, 16*y_pos, |
|
|
pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0); |
|
|
interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64, |
|
|
dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos, |
|
|
pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, 0); |
|
|
interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64, |
|
|
dec->qtmp.y + 128, 16*x_pos, 16*y_pos + 8, |
|
|
pMB->b_mvs[2].x, pMB->b_mvs[2].y, stride, 0); |
|
|
interpolate8x8_quarterpel(dec->tmp.y, backward.y, dec->qtmp.y, dec->qtmp.y + 64, |
|
|
dec->qtmp.y + 128, 16*x_pos + 8, 16*y_pos + 8, |
|
|
pMB->b_mvs[3].x, pMB->b_mvs[3].y, stride, 0); |
|
|
} |
|
|
} |
|
|
else { |
|
|
interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos, 16 * y_pos, |
|
|
pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0); |
|
|
interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos + 8, |
|
|
16 * y_pos, pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, |
|
|
0); |
|
|
interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos, |
|
|
16 * y_pos + 8, pMB->b_mvs[2].x, pMB->b_mvs[2].y, |
|
|
stride, 0); |
|
|
interpolate8x8_switch(dec->tmp.y, backward.y, 16 * x_pos + 8, |
|
|
16 * y_pos + 8, pMB->b_mvs[3].x, pMB->b_mvs[3].y, |
|
|
stride, 0); |
|
|
} |
|
|
|
|
|
interpolate8x8_switch(dec->tmp.u, backward.u, 8 * x_pos, 8 * y_pos, |
|
|
b_uv_dx, b_uv_dy, stride2, 0); |
|
|
interpolate8x8_switch(dec->tmp.v, backward.v, 8 * x_pos, 8 * y_pos, |
|
|
b_uv_dx, b_uv_dy, stride2, 0); |
|
|
|
|
|
interpolate8x8_avg2(dec->cur.y + (16 * y_pos * stride) + 16 * x_pos, |
|
|
dec->cur.y + (16 * y_pos * stride) + 16 * x_pos, |
|
|
dec->tmp.y + (16 * y_pos * stride) + 16 * x_pos, |
|
|
stride, 1, 8); |
|
|
|
|
|
interpolate8x8_avg2(dec->cur.y + (16 * y_pos * stride) + 16 * x_pos + 8, |
|
|
dec->cur.y + (16 * y_pos * stride) + 16 * x_pos + 8, |
|
|
dec->tmp.y + (16 * y_pos * stride) + 16 * x_pos + 8, |
|
|
stride, 1, 8); |
|
|
|
|
|
interpolate8x8_avg2(dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos, |
|
|
dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos, |
|
|
dec->tmp.y + ((16 * y_pos + 8) * stride) + 16 * x_pos, |
|
|
stride, 1, 8); |
|
|
|
|
|
interpolate8x8_avg2(dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos + 8, |
|
|
dec->cur.y + ((16 * y_pos + 8) * stride) + 16 * x_pos + 8, |
|
|
dec->tmp.y + ((16 * y_pos + 8) * stride) + 16 * x_pos + 8, |
|
|
stride, 1, 8); |
|
|
|
|
|
interpolate8x8_avg2(dec->cur.u + (8 * y_pos * stride2) + 8 * x_pos, |
|
|
dec->cur.u + (8 * y_pos * stride2) + 8 * x_pos, |
|
|
dec->tmp.u + (8 * y_pos * stride2) + 8 * x_pos, |
|
|
stride2, 1, 8); |
|
|
|
|
|
interpolate8x8_avg2(dec->cur.v + (8 * y_pos * stride2) + 8 * x_pos, |
|
|
dec->cur.v + (8 * y_pos * stride2) + 8 * x_pos, |
|
|
dec->tmp.v + (8 * y_pos * stride2) + 8 * x_pos, |
|
|
stride2, 1, 8); |
|
|
|
|
|
stop_comp_timer(); |
|
|
|
|
|
for (i = 0; i < 6; i++) { |
|
|
int direction = dec->alternate_vertical_scan ? 2 : 0; |
|
|
|
|
|
if (cbp & (1 << (5 - i))) // coded |
|
|
{ |
|
|
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear |
|
|
|
|
|
start_timer(); |
|
|
get_inter_block(bs, &block[i * 64], direction); |
|
|
stop_coding_timer(); |
|
|
|
|
|
start_timer(); |
|
|
if (dec->quant_type == 0) { |
|
|
dequant_inter(&data[i * 64], &block[i * 64], iQuant); |
|
|
} else { |
|
|
dequant4_inter(&data[i * 64], &block[i * 64], iQuant); |
|
|
} |
|
|
stop_iquant_timer(); |
|
|
|
|
|
start_timer(); |
|
|
idct(&data[i * 64]); |
|
|
stop_idct_timer(); |
|
|
} |
|
|
} |
|
|
|
|
|
if (dec->interlacing && pMB->field_dct) { |
|
|
next_block = stride; |
|
|
stride *= 2; |
|
|
} |
|
|
|
|
|
start_timer(); |
|
|
if (cbp & 32) |
|
|
transfer_16to8add(pY_Cur, &data[0 * 64], stride); |
|
|
if (cbp & 16) |
|
|
transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); |
|
|
if (cbp & 8) |
|
|
transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); |
|
|
if (cbp & 4) |
|
|
transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride); |
|
|
if (cbp & 2) |
|
|
transfer_16to8add(pU_Cur, &data[4 * 64], stride2); |
|
|
if (cbp & 1) |
|
|
transfer_16to8add(pV_Cur, &data[5 * 64], stride2); |
|
|
stop_transfer_timer(); |
|
|
} |
|
|
|
|
|
|
|
|
// add by MinChen <chenm001@163.com> |
|
|
// for decode B-frame dbquant |
|
|
int32_t __inline |
|
|
get_dbquant(Bitstream * bs) |
|
|
{ |
|
|
if (!BitstreamGetBit(bs)) // '0' |
|
|
return (0); |
|
|
else if (!BitstreamGetBit(bs)) // '10' |
|
|
return (-2); |
|
|
else |
|
|
return (2); // '11' |
|
|
} |
|
|
|
|
|
// add by MinChen <chenm001@163.com> |
|
|
// for decode B-frame mb_type |
|
|
// bit ret_value |
|
|
// 1 0 |
|
|
// 01 1 |
|
|
// 001 2 |
|
|
// 0001 3 |
|
|
int32_t __inline |
|
|
get_mbtype(Bitstream * bs) |
|
|
{ |
|
|
int32_t mb_type; |
|
|
|
|
|
for (mb_type = 0; mb_type <= 3; mb_type++) { |
|
|
if (BitstreamGetBit(bs)) |
|
|
break; |
|
|
} |
|
|
|
|
|
if (mb_type <= 3) |
|
|
return (mb_type); |
|
|
else |
|
|
return (-1); |
|
|
} |
|
|
|
|
|
void |
|
|
decoder_bframe(DECODER * dec, |
|
|
Bitstream * bs, |
|
|
int quant, |
|
|
int fcode_forward, |
|
|
int fcode_backward) |
|
|
{ |
|
|
uint32_t x, y; |
|
|
VECTOR mv; |
|
|
const VECTOR zeromv = {0,0}; |
|
|
#ifdef BFRAMES_DEC_DEBUG |
|
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FILE *fp; |
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static char first=0; |
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#define BFRAME_DEBUG if (!first && fp){ \ |
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fprintf(fp,"Y=%3d X=%3d MB=%2d CBP=%02X\n",y,x,mb->mb_type,mb->cbp); \ |
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} |
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#endif |
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start_timer(); |
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image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
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dec->width, dec->height); |
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image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height, |
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dec->width, dec->height); |
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stop_edges_timer(); |
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#ifdef BFRAMES_DEC_DEBUG |
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if (!first){ |
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fp=fopen("C:\\XVIDDBG.TXT","w"); |
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} |
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#endif |
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|
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for (y = 0; y < dec->mb_height; y++) { |
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// Initialize Pred Motion Vector |
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dec->p_fmv = dec->p_bmv = zeromv; |
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for (x = 0; x < dec->mb_width; x++) { |
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MACROBLOCK *mb = &dec->mbs[y * dec->mb_width + x]; |
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MACROBLOCK *last_mb = &dec->last_mbs[y * dec->mb_width + x]; |
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mv = |
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mb->b_mvs[0] = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] = |
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mb->mvs[0] = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = zeromv; |
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// the last P_VOP is skip macroblock ? |
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if (last_mb->mode == MODE_NOT_CODED) { |
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//DEBUG2("Skip MB in B-frame at (X,Y)=!",x,y); |
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mb->cbp = 0; |
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#ifdef BFRAMES_DEC_DEBUG |
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mb->mb_type = MODE_NOT_CODED; |
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BFRAME_DEBUG |
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#endif |
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mb->mb_type = MODE_FORWARD; |
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mb->quant = last_mb->quant; |
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//mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
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//mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = mb->mvs[0].y; |
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decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, mb->quant, 1); |
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continue; |
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} |
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if (!BitstreamGetBit(bs)) { // modb=='0' |
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const uint8_t modb2 = BitstreamGetBit(bs); |
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mb->mb_type = get_mbtype(bs); |
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if (!modb2) { // modb=='00' |
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mb->cbp = BitstreamGetBits(bs, 6); |
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} else { |
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mb->cbp = 0; |
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} |
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if (mb->mb_type && mb->cbp) { |
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quant += get_dbquant(bs); |
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if (quant > 31) { |
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quant = 31; |
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} else if (quant < 1) { |
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quant = 1; |
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} |
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} |
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} else { |
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mb->mb_type = MODE_DIRECT_NONE_MV; |
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mb->cbp = 0; |
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} |
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mb->quant = quant; |
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mb->mode = MODE_INTER4V; |
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//DEBUG1("Switch bm_type=",mb->mb_type); |
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#ifdef BFRAMES_DEC_DEBUG |
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BFRAME_DEBUG |
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#endif |
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switch (mb->mb_type) { |
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case MODE_DIRECT: |
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get_b_motion_vector(dec, bs, x, y, &mv, 1, zeromv); |
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case MODE_DIRECT_NONE_MV: |
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{ |
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const int64_t TRB = dec->time_pp - dec->time_bp, TRD = dec->time_pp; |
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int i; |
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for (i = 0; i < 4; i++) { |
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mb->mvs[i].x = (int32_t) ((TRB * last_mb->mvs[i].x) |
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/ TRD + mv.x); |
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mb->b_mvs[i].x = (int32_t) ((mv.x == 0) |
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? ((TRB - TRD) * last_mb->mvs[i].x) |
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/ TRD |
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: mb->mvs[i].x - last_mb->mvs[i].x); |
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mb->mvs[i].y = (int32_t) ((TRB * last_mb->mvs[i].y) |
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/ TRD + mv.y); |
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mb->b_mvs[i].y = (int32_t) ((mv.y == 0) |
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? ((TRB - TRD) * last_mb->mvs[i].y) |
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/ TRD |
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: mb->mvs[i].y - last_mb->mvs[i].y); |
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} |
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//DEBUG("B-frame Direct!\n"); |
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} |
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decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], |
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mb, x, y, bs); |
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break; |
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case MODE_INTERPOLATE: |
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get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, |
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dec->p_fmv); |
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dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
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get_b_motion_vector(dec, bs, x, y, &mb->b_mvs[0], |
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fcode_backward, dec->p_bmv); |
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dec->p_bmv = mb->b_mvs[1] = mb->b_mvs[2] = |
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mb->b_mvs[3] = mb->b_mvs[0]; |
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decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], |
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mb, x, y, bs); |
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//DEBUG("B-frame Bidir!\n"); |
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break; |
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case MODE_BACKWARD: |
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get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_backward, |
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dec->p_bmv); |
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dec->p_bmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
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mb->mode = MODE_INTER; |
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decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 0); |
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//DEBUG("B-frame Backward!\n"); |
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break; |
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case MODE_FORWARD: |
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get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, |
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dec->p_fmv); |
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dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
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mb->mode = MODE_INTER; |
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decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
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//DEBUG("B-frame Forward!\n"); |
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break; |
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default: |
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DPRINTF(DPRINTF_ERROR,"Not support B-frame mb_type = %i", mb->mb_type); |
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} |
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} // end of FOR |
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} |
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#ifdef BFRAMES_DEC_DEBUG |
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if (!first){ |
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first=1; |
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if (fp) |
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fclose(fp); |
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} |
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#endif |
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} |
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// swap two MACROBLOCK array |
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void |
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mb_swap(MACROBLOCK ** mb1, |
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MACROBLOCK ** mb2) |
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{ |
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MACROBLOCK *temp = *mb1; |
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*mb1 = *mb2; |
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*mb2 = temp; |
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} |
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/* perform post processing if necessary, and output the image */ |
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void decoder_output(DECODER * dec, IMAGE * img, MACROBLOCK * mbs, |
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const XVID_DEC_FRAME * frame, int pp_disable) |
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{ |
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if ((frame->general & (XVID_DEC_DEBLOCKY|XVID_DEC_DEBLOCKUV)) && !pp_disable) /* post process */ |
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{ |
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/* note: image is stored to tmp */ |
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image_copy(&dec->tmp, img, dec->edged_width, dec->height); |
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image_deblock_rrv(&dec->tmp, dec->edged_width, |
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mbs, dec->mb_width, dec->mb_height, dec->mb_width, |
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8, frame->general); |
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img = &dec->tmp; |
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} |
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image_output(img, dec->width, dec->height, |
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dec->edged_width, frame->image, frame->stride, |
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frame->colorspace, dec->interlacing); |
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} |
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int |
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decoder_decode(DECODER * dec, |
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XVID_DEC_FRAME * frame, XVID_DEC_STATS * stats) |
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{ |
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Bitstream bs; |
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uint32_t rounding; |
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uint32_t reduced_resolution; |
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uint32_t quant; |
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uint32_t fcode_forward; |
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uint32_t fcode_backward; |
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uint32_t intra_dc_threshold; |
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VECTOR gmc_mv[5]; |
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uint32_t vop_type; |
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int success = 0; |
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int output = 0; |
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int seen_something = 0; |
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start_global_timer(); |
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dec->low_delay_default = (frame->general & XVID_DEC_LOWDELAY); |
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dec->out_frm = (frame->colorspace == XVID_CSP_EXTERN) ? frame->image : NULL; |
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if ((frame->general & XVID_DEC_DISCONTINUITY)) |
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dec->frames = 0; |
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if (frame->length < 0) /* decoder flush */ |
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{ |
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/* if not decoding "low_delay/packed", and this isn't low_delay and |
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we have a reference frame, then outout the reference frame */ |
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if (!(dec->low_delay_default && dec->packed_mode) && !dec->low_delay && dec->frames>0) |
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{ |
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decoder_output(dec, &dec->refn[0], dec->mbs, frame, dec->last_reduced_resolution); |
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output = 1; |
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} |
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frame->length = 0; |
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if (stats) |
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{ |
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stats->notify = output ? XVID_DEC_VOP : XVID_DEC_NOTHING; |
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stats->data.vop.time_base = (int)dec->time_base; |
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stats->data.vop.time_increment = 0; //XXX: todo |
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} |
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emms(); |
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stop_global_timer(); |
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return XVID_ERR_OK; |
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} |
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|
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|
BitstreamInit(&bs, frame->bitstream, frame->length); |
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|
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|
// XXX: 0x7f is only valid whilst decoding vfw xvid/divx5 avi's |
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|
if(dec->low_delay_default && frame->length == 1 && BitstreamShowBits(&bs, 8) == 0x7f) |
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{ |
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if (stats) |
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stats->notify = XVID_DEC_VOP; |
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|
frame->length = 1; |
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image_output(&dec->refn[0], dec->width, dec->height, dec->edged_width, |
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|
frame->image, frame->stride, frame->colorspace, dec->interlacing); |
|
|
emms(); |
|
|
return XVID_ERR_OK; |
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|
} |
|
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|
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|
repeat: |
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|
|
|
vop_type = BitstreamReadHeaders(&bs, dec, &rounding, &reduced_resolution, |
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|
&quant, &fcode_forward, &fcode_backward, &intra_dc_threshold, gmc_mv); |
|
|
|
|
|
DPRINTF(DPRINTF_HEADER, "vop_type=%i, packed=%i, time=%i, time_pp=%i, time_bp=%i", |
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|
vop_type, dec->packed_mode, dec->time, dec->time_pp, dec->time_bp); |
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|
|
|
|
if (vop_type == - 1) |
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|
{ |
|
|
if (success) goto done; |
|
|
return XVID_ERR_FAIL; |
|
|
} |
|
|
|
|
|
if (vop_type == -2 || vop_type == -3) |
|
|
{ |
|
|
if (vop_type == -3) |
|
|
decoder_resize(dec); |
|
|
|
|
|
if (stats) |
|
|
{ |
|
|
stats->notify = XVID_DEC_VOL; |
|
|
stats->data.vol.general = 0; |
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|
if (dec->interlacing) |
|
|
stats->data.vol.general |= XVID_INTERLACING; |
|
|
stats->data.vol.width = dec->width; |
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|
stats->data.vol.height = dec->height; |
|
|
stats->data.vol.aspect_ratio = dec->aspect_ratio; |
|
|
stats->data.vol.par_width = dec->par_width; |
|
|
stats->data.vol.par_height = dec->par_height; |
|
|
frame->length = BitstreamPos(&bs) / 8; |
|
|
return XVID_ERR_OK; |
|
|
} |
|
|
goto repeat; |
|
|
} |
|
|
|
|
|
dec->p_bmv.x = dec->p_bmv.y = dec->p_fmv.y = dec->p_fmv.y = 0; // init pred vector to 0 |
|
|
|
|
|
|
|
|
/* packed_mode: special-N_VOP treament */ |
|
|
if (dec->packed_mode && vop_type == N_VOP) |
|
|
{ |
|
|
if (dec->low_delay_default && dec->frames > 0) |
|
|
{ |
|
|
decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, dec->last_reduced_resolution); |
|
|
output = 1; |
|
|
} |
|
|
/* ignore otherwise */ |
|
|
} |
|
|
else if (vop_type != B_VOP) |
|
|
{ |
|
|
switch(vop_type) |
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|
{ |
|
|
case I_VOP : |
|
|
decoder_iframe(dec, &bs, reduced_resolution, quant, intra_dc_threshold); |
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|
break; |
|
|
case P_VOP : |
|
|
decoder_pframe(dec, &bs, rounding, reduced_resolution, quant, |
|
|
fcode_forward, intra_dc_threshold, NULL); |
|
|
break; |
|
|
case S_VOP : |
|
|
decoder_pframe(dec, &bs, rounding, reduced_resolution, quant, |
|
|
fcode_forward, intra_dc_threshold, gmc_mv); |
|
|
break; |
|
|
case N_VOP : |
|
|
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
|
|
break; |
|
|
} |
|
|
|
|
|
if (reduced_resolution) |
|
|
{ |
|
|
image_deblock_rrv(&dec->cur, dec->edged_width, dec->mbs, |
|
|
(dec->width + 31) / 32, (dec->height + 31) / 32, dec->mb_width, |
|
|
16, XVID_DEC_DEBLOCKY|XVID_DEC_DEBLOCKUV); |
|
|
} |
|
|
|
|
|
/* note: for packed_mode, output is performed when the special-N_VOP is decoded */ |
|
|
if (!(dec->low_delay_default && dec->packed_mode)) |
|
|
{ |
|
|
if (dec->low_delay) |
|
|
{ |
|
|
decoder_output(dec, &dec->cur, dec->mbs, frame, reduced_resolution); |
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|
output = 1; |
|
|
} |
|
|
else if (dec->frames > 0) /* is the reference frame valid? */ |
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|
{ |
|
|
/* output the reference frame */ |
|
|
decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, dec->last_reduced_resolution); |
|
|
output = 1; |
|
|
} |
|
|
} |
|
|
|
|
|
image_swap(&dec->refn[0], &dec->refn[1]); |
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|
image_swap(&dec->cur, &dec->refn[0]); |
|
809 |
mb_swap(&dec->mbs, &dec->last_mbs); |
mb_swap(&dec->mbs, &dec->last_mbs); |
|
dec->last_reduced_resolution = reduced_resolution; |
|
|
|
|
|
dec->frames++; |
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|
seen_something = 1; |
|
|
|
|
|
}else{ /* B_VOP */ |
|
|
|
|
|
if (dec->low_delay) |
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|
{ |
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|
DPRINTF(DPRINTF_ERROR, "warning: bvop found in low_delay==1 stream"); |
|
|
dec->low_delay = 1; |
|
|
} |
|
|
|
|
|
if (dec->frames < 2) |
|
|
{ |
|
|
/* attemping to decode a bvop without atleast 2 reference frames */ |
|
|
image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16, |
|
|
"broken b-frame, mising ref frames"); |
|
|
}else if (dec->time_pp <= dec->time_bp) { |
|
|
/* this occurs when dx50_bvop_compatibility==0 sequences are |
|
|
decoded in vfw. */ |
|
|
image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16, |
|
|
"broken b-frame, tpp=%i tbp=%i", dec->time_pp, dec->time_bp); |
|
|
}else{ |
|
|
decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward); |
|
|
} |
|
|
|
|
|
decoder_output(dec, &dec->cur, dec->mbs, frame, reduced_resolution); |
|
|
output = 1; |
|
|
dec->frames++; |
|
|
} |
|
|
|
|
|
BitstreamByteAlign(&bs); |
|
|
|
|
|
/* low_delay_default mode: repeat in packed_mode */ |
|
|
if (dec->low_delay_default && dec->packed_mode && output == 0 && success == 0) |
|
|
{ |
|
|
success = 1; |
|
|
goto repeat; |
|
|
} |
|
|
|
|
|
done : |
|
|
|
|
|
/* low_delay_default mode: if we've gotten here without outputting anything, |
|
|
then output the recently decoded frame, or print an error message */ |
|
|
if (dec->low_delay_default && output == 0) |
|
|
{ |
|
|
if (dec->packed_mode && seen_something) |
|
|
{ |
|
|
/* output the recently decoded frame */ |
|
|
decoder_output(dec, &dec->refn[0], dec->last_mbs, frame, dec->last_reduced_resolution); |
|
|
output = 1; |
|
|
} |
|
|
else |
|
|
{ |
|
|
image_clear(&dec->cur, dec->width, dec->height, dec->edged_width, 0, 128, 128); |
|
|
image_printf(&dec->cur, dec->edged_width, dec->height, 16, 16, |
|
|
"warning: nothing to output"); |
|
|
image_printf(&dec->cur, dec->edged_width, dec->height, 16, 64, |
|
|
"bframe decoder lag"); |
|
|
|
|
|
decoder_output(dec, &dec->cur, NULL, frame, 1 /*disable pp*/); |
|
|
} |
|
|
} |
|
|
|
|
|
frame->length = BitstreamPos(&bs) / 8; |
|
|
|
|
|
if (stats) |
|
|
{ |
|
|
stats->notify = output ? XVID_DEC_VOP : XVID_DEC_NOTHING; |
|
|
stats->data.vop.time_base = (int)dec->time_base; |
|
|
stats->data.vop.time_increment = 0; //XXX: todo |
|
810 |
} |
} |
811 |
|
|
812 |
emms(); |
emms(); |