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/************************************************************************** |
/************************************************************************** |
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* |
* |
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* XVID MPEG-4 VIDEO CODEC |
* XVID MPEG-4 VIDEO CODEC |
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* decoder main |
* - 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 |
* This program is an implementation of a part of one or more MPEG-4 |
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* Video tools as specified in ISO/IEC 14496-2 standard. Those intending |
* Video tools as specified in ISO/IEC 14496-2 standard. Those intending |
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* editors and their companies, will have no liability for use of this |
* editors and their companies, will have no liability for use of this |
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* software or modifications or derivatives thereof. |
* software or modifications or derivatives thereof. |
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* |
* |
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* This program is xvid_free software; you can redistribute it and/or modify |
* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
* it under the terms of the GNU General Public License as published by |
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* the xvid_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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* This program is distributed in the hope that it will be useful, |
* This program is distributed in the hope that it will be useful, |
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* GNU General Public License for more details. |
* GNU General Public License for more details. |
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* |
* |
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* You should have received a copy of the GNU General Public License |
* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the xvid_free Software |
* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
* |
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*************************************************************************/ |
*************************************************************************/ |
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|
|
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* |
* |
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* History: |
* History: |
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* |
* |
35 |
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* 08.05.2002 add low_delay support for B_VOP decode |
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* MinChen <chenm001@163.com> |
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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); |
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* MinChen <chenm001@163.com> |
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* 22.04.2002 add some B-frame decode support; chenm001 <chenm001@163.com> |
* 22.04.2002 add some B-frame decode support; chenm001 <chenm001@163.com> |
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* 29.03.2002 interlacing fix - compensated block wasn't being used when |
* 29.03.2002 interlacing fix - compensated block wasn't being used when |
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* reconstructing blocks, thus artifacts |
* reconstructing blocks, thus artifacts |
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* interlaced decoding should be as fast as progressive now |
* interlaced decoding should be as fast as progressive now |
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* 26.03.2002 interlacing support - moved transfers outside decode loop |
* 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 |
* 26.12.2001 decoder_mbinter: dequant/idct moved within if(coded) block |
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* 22.12.2001 block based interpolation |
* 22.12.2001 lock based interpolation |
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* 01.12.2001 inital version; (c)2001 peter ross <pross@cs.rmit.edu.au> |
* 01.12.2001 inital version; (c)2001 peter ross <pross@cs.rmit.edu.au> |
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* |
* |
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* $Id$ |
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* |
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*************************************************************************/ |
*************************************************************************/ |
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#include <stdlib.h> |
#include <stdlib.h> |
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#include <string.h> // memset |
#include <string.h> |
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|
|
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#include "xvid.h" |
#include "xvid.h" |
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#include "portab.h" |
#include "portab.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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|
|
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int decoder_create(XVID_DEC_PARAM * param) |
int |
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|
decoder_create(XVID_DEC_PARAM * param) |
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{ |
{ |
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DECODER * dec; |
DECODER * dec; |
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|
|
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dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); |
dec = xvid_malloc(sizeof(DECODER), CACHE_LINE); |
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if (dec == NULL) |
if (dec == NULL) { |
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{ |
|
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return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
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} |
} |
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param->handle = dec; |
param->handle = dec; |
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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; |
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|
|
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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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{ |
|
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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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|
|
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if (image_create(&dec->refn[0], dec->edged_width, dec->edged_height)) |
if (image_create(&dec->refn[0], dec->edged_width, dec->edged_height)) { |
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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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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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// add by chenm001 <chenm001@163.com> |
// add by chenm001 <chenm001@163.com> |
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// for support B-frame to reference last 2 frame |
// 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)) { |
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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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xvid_free(dec); |
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return XVID_ERR_MEMORY; |
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|
} |
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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); |
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); |
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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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|
|
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dec->mbs = xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, CACHE_LINE); |
dec->mbs = |
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if (dec->mbs == NULL) |
xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, |
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{ |
CACHE_LINE); |
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|
if (dec->mbs == NULL) { |
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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); |
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image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
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image_destroy(&dec->refn[2], 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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// add by chenm001 <chenm001@163.com> |
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// for skip MB flag |
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dec->last_mbs = |
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xvid_malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height, |
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CACHE_LINE); |
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if (dec->last_mbs == NULL) { |
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xvid_free(dec->mbs); |
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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->refn[2], 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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|
|
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init_timer(); |
init_timer(); |
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|
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// add by chenm001 <chenm001@163.com> |
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// for support B-frame to save reference frame's time |
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dec->frames = -1; |
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dec->time = dec->time_base = dec->last_time_base = 0; |
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|
|
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return XVID_ERR_OK; |
return XVID_ERR_OK; |
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} |
} |
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|
|
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|
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int decoder_destroy(DECODER * dec) |
int |
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|
decoder_destroy(DECODER * dec) |
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{ |
{ |
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|
xvid_free(dec->last_mbs); |
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xvid_free(dec->mbs); |
xvid_free(dec->mbs); |
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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); |
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image_destroy(&dec->refn[2], 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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xvid_free(dec); |
xvid_free(dec); |
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static const int32_t dquant_table[4] = |
static const int32_t dquant_table[4] = { |
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{ |
|
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-1, -2, 1, 2 |
-1, -2, 1, 2 |
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}; |
}; |
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// decode an intra macroblock |
// decode an intra macroblock |
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|
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void decoder_mbintra(DECODER * dec, |
void |
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decoder_mbintra(DECODER * dec, |
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MACROBLOCK * pMB, |
MACROBLOCK * pMB, |
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const uint32_t x_pos, |
const uint32_t x_pos, |
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const uint32_t y_pos, |
const uint32_t y_pos, |
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|
|
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memset(block, 0, 6*64*sizeof(int16_t)); // clear |
memset(block, 0, 6*64*sizeof(int16_t)); // clear |
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|
|
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for (i = 0; i < 6; i++) |
for (i = 0; i < 6; i++) { |
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{ |
|
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uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); |
uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); |
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int16_t predictors[8]; |
int16_t predictors[8]; |
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int start_coeff; |
int start_coeff; |
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|
|
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start_timer(); |
start_timer(); |
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predict_acdc(dec->mbs, x_pos, y_pos, dec->mb_width, i, &block[i*64], iQuant, iDcScaler, predictors); |
predict_acdc(dec->mbs, x_pos, y_pos, dec->mb_width, i, &block[i * 64], |
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if (!acpred_flag) |
iQuant, iDcScaler, predictors); |
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{ |
if (!acpred_flag) { |
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pMB->acpred_directions[i] = 0; |
pMB->acpred_directions[i] = 0; |
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} |
} |
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stop_prediction_timer(); |
stop_prediction_timer(); |
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|
|
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if (quant < intra_dc_threshold) |
if (quant < intra_dc_threshold) { |
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{ |
|
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int dc_size; |
int dc_size; |
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int dc_dif; |
int dc_dif; |
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|
|
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dc_size = i < 4 ? get_dc_size_lum(bs) : get_dc_size_chrom(bs); |
dc_size = i < 4 ? get_dc_size_lum(bs) : get_dc_size_chrom(bs); |
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dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0 ; |
dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0 ; |
236 |
|
|
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if (dc_size > 8) |
if (dc_size > 8) { |
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{ |
|
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BitstreamSkip(bs, 1); // marker |
BitstreamSkip(bs, 1); // marker |
239 |
} |
} |
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|
|
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block[i*64 + 0] = dc_dif; |
block[i*64 + 0] = dc_dif; |
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start_coeff = 1; |
start_coeff = 1; |
243 |
} |
} else { |
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else |
|
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{ |
|
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start_coeff = 0; |
start_coeff = 0; |
245 |
} |
} |
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|
|
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start_timer(); |
start_timer(); |
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if (cbp & (1 << (5-i))) // coded |
if (cbp & (1 << (5-i))) // coded |
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{ |
{ |
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get_intra_block(bs, &block[i*64], pMB->acpred_directions[i], start_coeff); |
get_intra_block(bs, &block[i * 64], pMB->acpred_directions[i], |
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|
start_coeff); |
252 |
} |
} |
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stop_coding_timer(); |
stop_coding_timer(); |
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|
|
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stop_prediction_timer(); |
stop_prediction_timer(); |
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|
|
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start_timer(); |
start_timer(); |
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if (dec->quant_type == 0) |
if (dec->quant_type == 0) { |
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{ |
|
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dequant_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
dequant_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
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} |
} else { |
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else |
|
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{ |
|
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dequant4_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
dequant4_intra(&data[i*64], &block[i*64], iQuant, iDcScaler); |
264 |
} |
} |
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stop_iquant_timer(); |
stop_iquant_timer(); |
269 |
stop_idct_timer(); |
stop_idct_timer(); |
270 |
} |
} |
271 |
|
|
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if (dec->interlacing && pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
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{ |
|
273 |
next_block = stride; |
next_block = stride; |
274 |
stride *= 2; |
stride *= 2; |
275 |
} |
} |
296 |
|
|
297 |
// decode an inter macroblock |
// decode an inter macroblock |
298 |
|
|
299 |
void decoder_mbinter(DECODER * dec, |
void |
300 |
|
decoder_mbinter(DECODER * dec, |
301 |
const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
302 |
const uint32_t x_pos, |
const uint32_t x_pos, |
303 |
const uint32_t y_pos, |
const uint32_t y_pos, |
323 |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
324 |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
325 |
|
|
326 |
if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) |
if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) { |
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{ |
|
327 |
uv_dx = pMB->mvs[0].x; |
uv_dx = pMB->mvs[0].x; |
328 |
uv_dy = pMB->mvs[0].y; |
uv_dy = pMB->mvs[0].y; |
329 |
|
|
330 |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
331 |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
332 |
} |
} else { |
|
else |
|
|
{ |
|
333 |
int sum; |
int sum; |
334 |
|
|
335 |
sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
336 |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dx = |
337 |
|
(sum == |
338 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
339 |
|
(ABS(sum) / 16) * 2)); |
340 |
|
|
341 |
sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
342 |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dy = |
343 |
|
(sum == |
344 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
345 |
|
(ABS(sum) / 16) * 2)); |
346 |
} |
} |
347 |
|
|
348 |
start_timer(); |
start_timer(); |
349 |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos , pMB->mvs[0].x, pMB->mvs[0].y, stride, rounding); |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16 * x_pos, 16 * y_pos, |
350 |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos , pMB->mvs[1].x, pMB->mvs[1].y, stride, rounding); |
pMB->mvs[0].x, pMB->mvs[0].y, stride, rounding); |
351 |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos + 8, pMB->mvs[2].x, pMB->mvs[2].y, stride, rounding); |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16 * x_pos + 8, |
352 |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, rounding); |
16 * y_pos, pMB->mvs[1].x, pMB->mvs[1].y, stride, |
353 |
interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, rounding); |
rounding); |
354 |
interpolate8x8_switch(dec->cur.v, dec->refn[0].v, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, rounding); |
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16 * x_pos, |
355 |
|
16 * y_pos + 8, pMB->mvs[2].x, pMB->mvs[2].y, stride, |
356 |
|
rounding); |
357 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16 * x_pos + 8, |
358 |
|
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
359 |
|
rounding); |
360 |
|
interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8 * x_pos, 8 * y_pos, |
361 |
|
uv_dx, uv_dy, stride2, rounding); |
362 |
|
interpolate8x8_switch(dec->cur.v, dec->refn[0].v, 8 * x_pos, 8 * y_pos, |
363 |
|
uv_dx, uv_dy, stride2, rounding); |
364 |
stop_comp_timer(); |
stop_comp_timer(); |
365 |
|
|
366 |
for (i = 0; i < 6; i++) |
for (i = 0; i < 6; i++) { |
|
{ |
|
367 |
if (cbp & (1 << (5-i))) // coded |
if (cbp & (1 << (5-i))) // coded |
368 |
{ |
{ |
369 |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
373 |
stop_coding_timer(); |
stop_coding_timer(); |
374 |
|
|
375 |
start_timer(); |
start_timer(); |
376 |
if (dec->quant_type == 0) |
if (dec->quant_type == 0) { |
|
{ |
|
377 |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
378 |
} |
} else { |
|
else |
|
|
{ |
|
379 |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
380 |
} |
} |
381 |
stop_iquant_timer(); |
stop_iquant_timer(); |
386 |
} |
} |
387 |
} |
} |
388 |
|
|
389 |
if (dec->interlacing && pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
|
{ |
|
390 |
next_block = stride; |
next_block = stride; |
391 |
stride *= 2; |
stride *= 2; |
392 |
} |
} |
408 |
} |
} |
409 |
|
|
410 |
|
|
411 |
void decoder_iframe(DECODER * dec, Bitstream * bs, int quant, int intra_dc_threshold) |
void |
412 |
|
decoder_iframe(DECODER * dec, |
413 |
|
Bitstream * bs, |
414 |
|
int quant, |
415 |
|
int intra_dc_threshold) |
416 |
{ |
{ |
417 |
|
|
418 |
uint32_t x, y; |
uint32_t x, y; |
419 |
|
|
420 |
for (y = 0; y < dec->mb_height; y++) |
for (y = 0; y < dec->mb_height; y++) { |
421 |
{ |
for (x = 0; x < dec->mb_width; x++) { |
|
for (x = 0; x < dec->mb_width; x++) |
|
|
{ |
|
422 |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
423 |
|
|
424 |
uint32_t mcbpc; |
uint32_t mcbpc; |
433 |
|
|
434 |
acpred_flag = BitstreamGetBit(bs); |
acpred_flag = BitstreamGetBit(bs); |
435 |
|
|
436 |
if (mb->mode == MODE_STUFFING) |
if (mb->mode == MODE_STUFFING) { |
|
{ |
|
437 |
DEBUG("-- STUFFING ?"); |
DEBUG("-- STUFFING ?"); |
438 |
continue; |
continue; |
439 |
} |
} |
441 |
cbpy = get_cbpy(bs, 1); |
cbpy = get_cbpy(bs, 1); |
442 |
cbp = (cbpy << 2) | cbpc; |
cbp = (cbpy << 2) | cbpc; |
443 |
|
|
444 |
if (mb->mode == MODE_INTRA_Q) |
if (mb->mode == MODE_INTRA_Q) { |
|
{ |
|
445 |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
446 |
if (quant > 31) |
if (quant > 31) { |
|
{ |
|
447 |
quant = 31; |
quant = 31; |
448 |
} |
} else if (quant < 1) { |
|
else if (quant < 1) |
|
|
{ |
|
449 |
quant = 1; |
quant = 1; |
450 |
} |
} |
451 |
} |
} |
452 |
mb->quant = quant; |
mb->quant = quant; |
453 |
|
|
454 |
if (dec->interlacing) |
if (dec->interlacing) { |
|
{ |
|
455 |
mb->field_dct = BitstreamGetBit(bs); |
mb->field_dct = BitstreamGetBit(bs); |
456 |
DEBUG1("deci: field_dct: ", mb->field_dct); |
DEBUG1("deci: field_dct: ", mb->field_dct); |
457 |
} |
} |
458 |
|
|
459 |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, intra_dc_threshold); |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
460 |
|
intra_dc_threshold); |
461 |
} |
} |
462 |
} |
} |
463 |
|
|
464 |
} |
} |
465 |
|
|
466 |
|
|
467 |
void get_motion_vector(DECODER *dec, Bitstream *bs, int x, int y, int k, VECTOR * mv, int fcode) |
void |
468 |
|
get_motion_vector(DECODER * dec, |
469 |
|
Bitstream * bs, |
470 |
|
int x, |
471 |
|
int y, |
472 |
|
int k, |
473 |
|
VECTOR * mv, |
474 |
|
int fcode) |
475 |
{ |
{ |
476 |
|
|
477 |
int scale_fac = 1 << (fcode - 1); |
int scale_fac = 1 << (fcode - 1); |
480 |
int range = (64 * scale_fac); |
int range = (64 * scale_fac); |
481 |
|
|
482 |
VECTOR pmv[4]; |
VECTOR pmv[4]; |
483 |
uint32_t psad[4]; |
int32_t psad[4]; |
484 |
|
|
485 |
int mv_x, mv_y; |
int mv_x, mv_y; |
486 |
int pmv_x, pmv_y; |
int pmv_x, pmv_y; |
497 |
mv_x += pmv_x; |
mv_x += pmv_x; |
498 |
mv_y += pmv_y; |
mv_y += pmv_y; |
499 |
|
|
500 |
if (mv_x < low) |
if (mv_x < low) { |
|
{ |
|
501 |
mv_x += range; |
mv_x += range; |
502 |
} |
} else if (mv_x > high) { |
|
else if (mv_x > high) |
|
|
{ |
|
503 |
mv_x -= range; |
mv_x -= range; |
504 |
} |
} |
505 |
|
|
506 |
if (mv_y < low) |
if (mv_y < low) { |
|
{ |
|
507 |
mv_y += range; |
mv_y += range; |
508 |
} |
} else if (mv_y > high) { |
|
else if (mv_y > high) |
|
|
{ |
|
509 |
mv_y -= range; |
mv_y -= range; |
510 |
} |
} |
511 |
|
|
515 |
} |
} |
516 |
|
|
517 |
|
|
518 |
void decoder_pframe(DECODER * dec, Bitstream * bs, int rounding, int quant, int fcode, int intra_dc_threshold) |
void |
519 |
|
decoder_pframe(DECODER * dec, |
520 |
|
Bitstream * bs, |
521 |
|
int rounding, |
522 |
|
int quant, |
523 |
|
int fcode, |
524 |
|
int intra_dc_threshold) |
525 |
{ |
{ |
526 |
|
|
527 |
uint32_t x, y; |
uint32_t x, y; |
528 |
|
|
529 |
start_timer(); |
start_timer(); |
530 |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, dec->width, dec->height, dec->interlacing); |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
531 |
|
dec->width, dec->height, dec->interlacing); |
532 |
stop_edges_timer(); |
stop_edges_timer(); |
533 |
|
|
534 |
for (y = 0; y < dec->mb_height; y++) |
for (y = 0; y < dec->mb_height; y++) { |
535 |
{ |
for (x = 0; x < dec->mb_width; x++) { |
|
for (x = 0; x < dec->mb_width; x++) |
|
|
{ |
|
536 |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
537 |
|
|
538 |
if (!BitstreamGetBit(bs)) // not_coded |
//if (!(dec->mb_skip[y*dec->mb_width + x]=BitstreamGetBit(bs))) // not_coded |
539 |
|
if (!(BitstreamGetBit(bs))) // not_coded |
540 |
{ |
{ |
541 |
uint32_t mcbpc; |
uint32_t mcbpc; |
542 |
uint32_t cbpc; |
uint32_t cbpc; |
552 |
|
|
553 |
intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); |
intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); |
554 |
|
|
555 |
if (intra) |
if (intra) { |
|
{ |
|
556 |
acpred_flag = BitstreamGetBit(bs); |
acpred_flag = BitstreamGetBit(bs); |
557 |
} |
} |
558 |
|
|
559 |
if (mb->mode == MODE_STUFFING) |
if (mb->mode == MODE_STUFFING) { |
|
{ |
|
560 |
DEBUG("-- STUFFING ?"); |
DEBUG("-- STUFFING ?"); |
561 |
continue; |
continue; |
562 |
} |
} |
564 |
cbpy = get_cbpy(bs, intra); |
cbpy = get_cbpy(bs, intra); |
565 |
cbp = (cbpy << 2) | cbpc; |
cbp = (cbpy << 2) | cbpc; |
566 |
|
|
567 |
if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) |
if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) { |
|
{ |
|
568 |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
569 |
if (quant > 31) |
if (quant > 31) { |
|
{ |
|
570 |
quant = 31; |
quant = 31; |
571 |
} |
} else if (mb->quant < 1) { |
|
else if (mb->quant < 1) |
|
|
{ |
|
572 |
quant = 1; |
quant = 1; |
573 |
} |
} |
574 |
} |
} |
575 |
mb->quant = quant; |
mb->quant = quant; |
576 |
|
|
577 |
if (dec->interlacing) |
if (dec->interlacing) { |
|
{ |
|
578 |
mb->field_dct = BitstreamGetBit(bs); |
mb->field_dct = BitstreamGetBit(bs); |
579 |
DEBUG1("decp: field_dct: ", mb->field_dct); |
DEBUG1("decp: field_dct: ", mb->field_dct); |
580 |
|
|
581 |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
|
{ |
|
582 |
mb->field_pred = BitstreamGetBit(bs); |
mb->field_pred = BitstreamGetBit(bs); |
583 |
DEBUG1("decp: field_pred: ", mb->field_pred); |
DEBUG1("decp: field_pred: ", mb->field_pred); |
584 |
|
|
585 |
if (mb->field_pred) |
if (mb->field_pred) { |
|
{ |
|
586 |
mb->field_for_top = BitstreamGetBit(bs); |
mb->field_for_top = BitstreamGetBit(bs); |
587 |
DEBUG1("decp: field_for_top: ", mb->field_for_top); |
DEBUG1("decp: field_for_top: ", mb->field_for_top); |
588 |
mb->field_for_bot = BitstreamGetBit(bs); |
mb->field_for_bot = BitstreamGetBit(bs); |
591 |
} |
} |
592 |
} |
} |
593 |
|
|
594 |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
595 |
{ |
if (dec->interlacing && mb->field_pred) { |
596 |
if (dec->interlacing && mb->field_pred) |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
597 |
{ |
fcode); |
598 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], |
599 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], fcode); |
fcode); |
600 |
} |
} else { |
601 |
else |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
602 |
{ |
fcode); |
603 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
604 |
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
mb->mvs[0].x; |
605 |
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 = |
606 |
} |
mb->mvs[0].y; |
607 |
} |
} |
608 |
else if (mb->mode == MODE_INTER4V /* || mb->mode == MODE_INTER4V_Q */) |
} else if (mb->mode == |
609 |
{ |
MODE_INTER4V /* || mb->mode == MODE_INTER4V_Q */ ) { |
610 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
611 |
get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode); |
get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode); |
612 |
get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode); |
get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode); |
613 |
get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode); |
get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode); |
614 |
} |
} else // MODE_INTRA, MODE_INTRA_Q |
|
else // MODE_INTRA, MODE_INTRA_Q |
|
615 |
{ |
{ |
616 |
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 = |
617 |
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; |
0; |
618 |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, intra_dc_threshold); |
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
619 |
|
0; |
620 |
|
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
621 |
|
intra_dc_threshold); |
622 |
continue; |
continue; |
623 |
} |
} |
624 |
|
|
625 |
decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, rounding); |
decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
626 |
} |
rounding); |
627 |
else // not coded |
} else // not coded |
628 |
{ |
{ |
629 |
|
//DEBUG2("P-frame MB at (X,Y)=",x,y); |
630 |
mb->mode = MODE_NOT_CODED; |
mb->mode = MODE_NOT_CODED; |
631 |
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; |
632 |
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; |
635 |
|
|
636 |
start_timer(); |
start_timer(); |
637 |
|
|
638 |
transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x), |
transfer8x8_copy(dec->cur.y + (16 * y) * dec->edged_width + |
639 |
dec->refn[0].y + (16*y)*dec->edged_width + (16*x), |
(16 * x), |
640 |
dec->edged_width); |
dec->refn[0].y + (16 * y) * dec->edged_width + |
641 |
|
(16 * x), dec->edged_width); |
642 |
transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x+8), |
|
643 |
dec->refn[0].y + (16*y)*dec->edged_width + (16*x+8), |
transfer8x8_copy(dec->cur.y + (16 * y) * dec->edged_width + |
644 |
dec->edged_width); |
(16 * x + 8), |
645 |
|
dec->refn[0].y + (16 * y) * dec->edged_width + |
646 |
transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x), |
(16 * x + 8), dec->edged_width); |
647 |
dec->refn[0].y + (16*y+8)*dec->edged_width + (16*x), |
|
648 |
dec->edged_width); |
transfer8x8_copy(dec->cur.y + (16 * y + 8) * dec->edged_width + |
649 |
|
(16 * x), |
650 |
transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x+8), |
dec->refn[0].y + (16 * y + |
651 |
dec->refn[0].y + (16*y+8)*dec->edged_width + (16*x+8), |
8) * dec->edged_width + |
652 |
dec->edged_width); |
(16 * x), dec->edged_width); |
653 |
|
|
654 |
transfer8x8_copy(dec->cur.u + (8*y)*dec->edged_width/2 + (8*x), |
transfer8x8_copy(dec->cur.y + (16 * y + 8) * dec->edged_width + |
655 |
dec->refn[0].u + (8*y)*dec->edged_width/2 + (8*x), |
(16 * x + 8), |
656 |
|
dec->refn[0].y + (16 * y + |
657 |
|
8) * dec->edged_width + |
658 |
|
(16 * x + 8), dec->edged_width); |
659 |
|
|
660 |
|
transfer8x8_copy(dec->cur.u + (8 * y) * dec->edged_width / 2 + |
661 |
|
(8 * x), |
662 |
|
dec->refn[0].u + |
663 |
|
(8 * y) * dec->edged_width / 2 + (8 * x), |
664 |
dec->edged_width/2); |
dec->edged_width/2); |
665 |
|
|
666 |
transfer8x8_copy(dec->cur.v + (8*y)*dec->edged_width/2 + (8*x), |
transfer8x8_copy(dec->cur.v + (8 * y) * dec->edged_width / 2 + |
667 |
dec->refn[0].v + (8*y)*dec->edged_width/2 + (8*x), |
(8 * x), |
668 |
|
dec->refn[0].v + |
669 |
|
(8 * y) * dec->edged_width / 2 + (8 * x), |
670 |
dec->edged_width/2); |
dec->edged_width/2); |
671 |
|
|
672 |
stop_transfer_timer(); |
stop_transfer_timer(); |
675 |
} |
} |
676 |
} |
} |
677 |
|
|
678 |
int decoder_decode(DECODER * dec, XVID_DEC_FRAME * frame) |
|
679 |
|
// add by MinChen <chenm001@163.com> |
680 |
|
// decode B-frame motion vector |
681 |
|
void |
682 |
|
get_b_motion_vector(DECODER * dec, |
683 |
|
Bitstream * bs, |
684 |
|
int x, |
685 |
|
int y, |
686 |
|
VECTOR * mv, |
687 |
|
int fcode, |
688 |
|
const VECTOR pmv) |
689 |
|
{ |
690 |
|
int scale_fac = 1 << (fcode - 1); |
691 |
|
int high = (32 * scale_fac) - 1; |
692 |
|
int low = ((-32) * scale_fac); |
693 |
|
int range = (64 * scale_fac); |
694 |
|
|
695 |
|
int mv_x, mv_y; |
696 |
|
int pmv_x, pmv_y; |
697 |
|
|
698 |
|
pmv_x = pmv.x; |
699 |
|
pmv_y = pmv.y; |
700 |
|
|
701 |
|
mv_x = get_mv(bs, fcode); |
702 |
|
mv_y = get_mv(bs, fcode); |
703 |
|
|
704 |
|
mv_x += pmv_x; |
705 |
|
mv_y += pmv_y; |
706 |
|
|
707 |
|
if (mv_x < low) { |
708 |
|
mv_x += range; |
709 |
|
} else if (mv_x > high) { |
710 |
|
mv_x -= range; |
711 |
|
} |
712 |
|
|
713 |
|
if (mv_y < low) { |
714 |
|
mv_y += range; |
715 |
|
} else if (mv_y > high) { |
716 |
|
mv_y -= range; |
717 |
|
} |
718 |
|
|
719 |
|
mv->x = mv_x; |
720 |
|
mv->y = mv_y; |
721 |
|
} |
722 |
|
|
723 |
|
|
724 |
|
// add by MinChen <chenm001@163.com> |
725 |
|
// decode an B-frame forward & backward inter macroblock |
726 |
|
void |
727 |
|
decoder_bf_mbinter(DECODER * dec, |
728 |
|
const MACROBLOCK * pMB, |
729 |
|
const uint32_t x_pos, |
730 |
|
const uint32_t y_pos, |
731 |
|
const uint32_t cbp, |
732 |
|
Bitstream * bs, |
733 |
|
const uint32_t quant, |
734 |
|
const uint8_t ref) |
735 |
|
{ |
736 |
|
|
737 |
|
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
738 |
|
DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
739 |
|
|
740 |
|
uint32_t stride = dec->edged_width; |
741 |
|
uint32_t stride2 = stride / 2; |
742 |
|
uint32_t next_block = stride * 8; |
743 |
|
uint32_t i; |
744 |
|
uint32_t iQuant = pMB->quant; |
745 |
|
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
746 |
|
int uv_dx, uv_dy; |
747 |
|
|
748 |
|
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
749 |
|
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
750 |
|
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
751 |
|
|
752 |
|
if (!(pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
753 |
|
uv_dx = pMB->mvs[0].x; |
754 |
|
uv_dy = pMB->mvs[0].y; |
755 |
|
|
756 |
|
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
757 |
|
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
758 |
|
} else { |
759 |
|
int sum; |
760 |
|
|
761 |
|
sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
762 |
|
uv_dx = |
763 |
|
(sum == |
764 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
765 |
|
(ABS(sum) / 16) * 2)); |
766 |
|
|
767 |
|
sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
768 |
|
uv_dy = |
769 |
|
(sum == |
770 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
771 |
|
(ABS(sum) / 16) * 2)); |
772 |
|
} |
773 |
|
|
774 |
|
start_timer(); |
775 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos, 16 * y_pos, |
776 |
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
777 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos + 8, |
778 |
|
16 * y_pos, pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); |
779 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos, |
780 |
|
16 * y_pos + 8, pMB->mvs[2].x, pMB->mvs[2].y, stride, |
781 |
|
0); |
782 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos + 8, |
783 |
|
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
784 |
|
0); |
785 |
|
interpolate8x8_switch(dec->cur.u, dec->refn[ref].u, 8 * x_pos, 8 * y_pos, |
786 |
|
uv_dx, uv_dy, stride2, 0); |
787 |
|
interpolate8x8_switch(dec->cur.v, dec->refn[ref].v, 8 * x_pos, 8 * y_pos, |
788 |
|
uv_dx, uv_dy, stride2, 0); |
789 |
|
stop_comp_timer(); |
790 |
|
|
791 |
|
for (i = 0; i < 6; i++) { |
792 |
|
if (cbp & (1 << (5 - i))) // coded |
793 |
|
{ |
794 |
|
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear |
795 |
|
|
796 |
|
start_timer(); |
797 |
|
get_inter_block(bs, &block[i * 64]); |
798 |
|
stop_coding_timer(); |
799 |
|
|
800 |
|
start_timer(); |
801 |
|
if (dec->quant_type == 0) { |
802 |
|
dequant_inter(&data[i * 64], &block[i * 64], iQuant); |
803 |
|
} else { |
804 |
|
dequant4_inter(&data[i * 64], &block[i * 64], iQuant); |
805 |
|
} |
806 |
|
stop_iquant_timer(); |
807 |
|
|
808 |
|
start_timer(); |
809 |
|
idct(&data[i * 64]); |
810 |
|
stop_idct_timer(); |
811 |
|
} |
812 |
|
} |
813 |
|
|
814 |
|
if (dec->interlacing && pMB->field_dct) { |
815 |
|
next_block = stride; |
816 |
|
stride *= 2; |
817 |
|
} |
818 |
|
|
819 |
|
start_timer(); |
820 |
|
if (cbp & 32) |
821 |
|
transfer_16to8add(pY_Cur, &data[0 * 64], stride); |
822 |
|
if (cbp & 16) |
823 |
|
transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); |
824 |
|
if (cbp & 8) |
825 |
|
transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); |
826 |
|
if (cbp & 4) |
827 |
|
transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride); |
828 |
|
if (cbp & 2) |
829 |
|
transfer_16to8add(pU_Cur, &data[4 * 64], stride2); |
830 |
|
if (cbp & 1) |
831 |
|
transfer_16to8add(pV_Cur, &data[5 * 64], stride2); |
832 |
|
stop_transfer_timer(); |
833 |
|
} |
834 |
|
|
835 |
|
|
836 |
|
// add by MinChen <chenm001@163.com> |
837 |
|
// decode an B-frame direct & inter macroblock |
838 |
|
void |
839 |
|
decoder_bf_interpolate_mbinter(DECODER * dec, |
840 |
|
IMAGE forward, |
841 |
|
IMAGE backward, |
842 |
|
const MACROBLOCK * pMB, |
843 |
|
const uint32_t x_pos, |
844 |
|
const uint32_t y_pos, |
845 |
|
const uint32_t cbp, |
846 |
|
Bitstream * bs) |
847 |
|
{ |
848 |
|
|
849 |
|
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
850 |
|
DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
851 |
|
|
852 |
|
uint32_t stride = dec->edged_width; |
853 |
|
uint32_t stride2 = stride / 2; |
854 |
|
uint32_t next_block = stride * 8; |
855 |
|
uint32_t iQuant = pMB->quant; |
856 |
|
int uv_dx, uv_dy; |
857 |
|
int b_uv_dx, b_uv_dy; |
858 |
|
uint32_t i; |
859 |
|
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
860 |
|
|
861 |
|
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
862 |
|
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
863 |
|
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
864 |
|
|
865 |
|
if ((pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
866 |
|
uv_dx = pMB->mvs[0].x; |
867 |
|
uv_dy = pMB->mvs[0].y; |
868 |
|
|
869 |
|
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
870 |
|
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
871 |
|
|
872 |
|
b_uv_dx = pMB->b_mvs[0].x; |
873 |
|
b_uv_dy = pMB->b_mvs[0].y; |
874 |
|
|
875 |
|
b_uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
876 |
|
b_uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
877 |
|
} else { |
878 |
|
int sum; |
879 |
|
|
880 |
|
sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
881 |
|
uv_dx = |
882 |
|
(sum == |
883 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
884 |
|
(ABS(sum) / 16) * 2)); |
885 |
|
|
886 |
|
sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
887 |
|
uv_dy = |
888 |
|
(sum == |
889 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
890 |
|
(ABS(sum) / 16) * 2)); |
891 |
|
|
892 |
|
sum = |
893 |
|
pMB->b_mvs[0].x + pMB->b_mvs[1].x + pMB->b_mvs[2].x + |
894 |
|
pMB->b_mvs[3].x; |
895 |
|
b_uv_dx = |
896 |
|
(sum == |
897 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
898 |
|
(ABS(sum) / 16) * 2)); |
899 |
|
|
900 |
|
sum = |
901 |
|
pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + |
902 |
|
pMB->b_mvs[3].y; |
903 |
|
b_uv_dy = |
904 |
|
(sum == |
905 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
906 |
|
(ABS(sum) / 16) * 2)); |
907 |
|
} |
908 |
|
|
909 |
|
|
910 |
|
start_timer(); |
911 |
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos, |
912 |
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
913 |
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, 16 * y_pos, |
914 |
|
pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); |
915 |
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos + 8, |
916 |
|
pMB->mvs[2].x, pMB->mvs[2].y, stride, 0); |
917 |
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, |
918 |
|
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
919 |
|
0); |
920 |
|
interpolate8x8_switch(dec->cur.u, forward.u, 8 * x_pos, 8 * y_pos, uv_dx, |
921 |
|
uv_dy, stride2, 0); |
922 |
|
interpolate8x8_switch(dec->cur.v, forward.v, 8 * x_pos, 8 * y_pos, uv_dx, |
923 |
|
uv_dy, stride2, 0); |
924 |
|
|
925 |
|
|
926 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos, 16 * y_pos, |
927 |
|
pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0); |
928 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos + 8, |
929 |
|
16 * y_pos, pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, |
930 |
|
0); |
931 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos, |
932 |
|
16 * y_pos + 8, pMB->b_mvs[2].x, pMB->b_mvs[2].y, |
933 |
|
stride, 0); |
934 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos + 8, |
935 |
|
16 * y_pos + 8, pMB->b_mvs[3].x, pMB->b_mvs[3].y, |
936 |
|
stride, 0); |
937 |
|
interpolate8x8_switch(dec->refn[2].u, backward.u, 8 * x_pos, 8 * y_pos, |
938 |
|
b_uv_dx, b_uv_dy, stride2, 0); |
939 |
|
interpolate8x8_switch(dec->refn[2].v, backward.v, 8 * x_pos, 8 * y_pos, |
940 |
|
b_uv_dx, b_uv_dy, stride2, 0); |
941 |
|
|
942 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos, 16 * y_pos, |
943 |
|
stride); |
944 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos + 8, 16 * y_pos, |
945 |
|
stride); |
946 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos, 16 * y_pos + 8, |
947 |
|
stride); |
948 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos + 8, |
949 |
|
16 * y_pos + 8, stride); |
950 |
|
interpolate8x8_c(dec->cur.u, dec->refn[2].u, 8 * x_pos, 8 * y_pos, |
951 |
|
stride2); |
952 |
|
interpolate8x8_c(dec->cur.v, dec->refn[2].v, 8 * x_pos, 8 * y_pos, |
953 |
|
stride2); |
954 |
|
|
955 |
|
stop_comp_timer(); |
956 |
|
|
957 |
|
for (i = 0; i < 6; i++) { |
958 |
|
if (cbp & (1 << (5 - i))) // coded |
959 |
|
{ |
960 |
|
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear |
961 |
|
|
962 |
|
start_timer(); |
963 |
|
get_inter_block(bs, &block[i * 64]); |
964 |
|
stop_coding_timer(); |
965 |
|
|
966 |
|
start_timer(); |
967 |
|
if (dec->quant_type == 0) { |
968 |
|
dequant_inter(&data[i * 64], &block[i * 64], iQuant); |
969 |
|
} else { |
970 |
|
dequant4_inter(&data[i * 64], &block[i * 64], iQuant); |
971 |
|
} |
972 |
|
stop_iquant_timer(); |
973 |
|
|
974 |
|
start_timer(); |
975 |
|
idct(&data[i * 64]); |
976 |
|
stop_idct_timer(); |
977 |
|
} |
978 |
|
} |
979 |
|
|
980 |
|
if (dec->interlacing && pMB->field_dct) { |
981 |
|
next_block = stride; |
982 |
|
stride *= 2; |
983 |
|
} |
984 |
|
|
985 |
|
start_timer(); |
986 |
|
if (cbp & 32) |
987 |
|
transfer_16to8add(pY_Cur, &data[0 * 64], stride); |
988 |
|
if (cbp & 16) |
989 |
|
transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); |
990 |
|
if (cbp & 8) |
991 |
|
transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); |
992 |
|
if (cbp & 4) |
993 |
|
transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride); |
994 |
|
if (cbp & 2) |
995 |
|
transfer_16to8add(pU_Cur, &data[4 * 64], stride2); |
996 |
|
if (cbp & 1) |
997 |
|
transfer_16to8add(pV_Cur, &data[5 * 64], stride2); |
998 |
|
stop_transfer_timer(); |
999 |
|
} |
1000 |
|
|
1001 |
|
|
1002 |
|
// add by MinChen <chenm001@163.com> |
1003 |
|
// for decode B-frame dbquant |
1004 |
|
int32_t __inline |
1005 |
|
get_dbquant(Bitstream * bs) |
1006 |
|
{ |
1007 |
|
if (!BitstreamGetBit(bs)) // '0' |
1008 |
|
return (0); |
1009 |
|
else if (!BitstreamGetBit(bs)) // '10' |
1010 |
|
return (-2); |
1011 |
|
else |
1012 |
|
return (2); // '11' |
1013 |
|
} |
1014 |
|
|
1015 |
|
// add by MinChen <chenm001@163.com> |
1016 |
|
// for decode B-frame mb_type |
1017 |
|
// bit ret_value |
1018 |
|
// 1 0 |
1019 |
|
// 01 1 |
1020 |
|
// 001 2 |
1021 |
|
// 0001 3 |
1022 |
|
int32_t __inline |
1023 |
|
get_mbtype(Bitstream * bs) |
1024 |
|
{ |
1025 |
|
int32_t mb_type; |
1026 |
|
|
1027 |
|
for (mb_type = 0; mb_type <= 3; mb_type++) { |
1028 |
|
if (BitstreamGetBit(bs)) |
1029 |
|
break; |
1030 |
|
} |
1031 |
|
|
1032 |
|
if (mb_type <= 3) |
1033 |
|
return (mb_type); |
1034 |
|
else |
1035 |
|
return (-1); |
1036 |
|
} |
1037 |
|
|
1038 |
|
void |
1039 |
|
decoder_bframe(DECODER * dec, |
1040 |
|
Bitstream * bs, |
1041 |
|
int quant, |
1042 |
|
int fcode_forward, |
1043 |
|
int fcode_backward) |
1044 |
|
{ |
1045 |
|
|
1046 |
|
uint32_t x, y; |
1047 |
|
VECTOR mv, zeromv; |
1048 |
|
|
1049 |
|
start_timer(); |
1050 |
|
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
1051 |
|
dec->width, dec->height, dec->interlacing); |
1052 |
|
//image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height, dec->width, dec->height, dec->interlacing); |
1053 |
|
stop_edges_timer(); |
1054 |
|
|
1055 |
|
|
1056 |
|
for (y = 0; y < dec->mb_height; y++) { |
1057 |
|
// Initialize Pred Motion Vector |
1058 |
|
dec->p_fmv.x = dec->p_fmv.y = dec->p_bmv.x = dec->p_bmv.y = 0; |
1059 |
|
for (x = 0; x < dec->mb_width; x++) { |
1060 |
|
MACROBLOCK *mb = &dec->mbs[y * dec->mb_width + x]; |
1061 |
|
MACROBLOCK *last_mb = &dec->last_mbs[y * dec->mb_width + x]; |
1062 |
|
|
1063 |
|
mb->mvs[0].x = mb->mvs[0].y = zeromv.x = zeromv.y = mv.x = mv.y = |
1064 |
|
0; |
1065 |
|
|
1066 |
|
// the last P_VOP is skip macroblock ? |
1067 |
|
if (last_mb->mode == MODE_NOT_CODED) { |
1068 |
|
//DEBUG2("Skip MB in B-frame at (X,Y)=!",x,y); |
1069 |
|
mb->mb_type = MODE_FORWARD; |
1070 |
|
mb->cbp = 0; |
1071 |
|
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
1072 |
|
mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = mb->mvs[0].y; |
1073 |
|
mb->quant = 8; |
1074 |
|
|
1075 |
|
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
1076 |
|
continue; |
1077 |
|
} |
1078 |
|
//t=BitstreamShowBits(bs,32); |
1079 |
|
|
1080 |
|
if (!BitstreamGetBit(bs)) { // modb=='0' |
1081 |
|
const uint8_t modb2 = BitstreamGetBit(bs); |
1082 |
|
|
1083 |
|
mb->mb_type = get_mbtype(bs); |
1084 |
|
|
1085 |
|
if (!modb2) { // modb=='00' |
1086 |
|
mb->cbp = BitstreamGetBits(bs, 6); |
1087 |
|
} else { |
1088 |
|
mb->cbp = 0; |
1089 |
|
} |
1090 |
|
if (mb->mb_type && mb->cbp) { |
1091 |
|
quant += get_dbquant(bs); |
1092 |
|
|
1093 |
|
if (quant > 31) { |
1094 |
|
quant = 31; |
1095 |
|
} else if (mb->quant < 1) { |
1096 |
|
quant = 1; |
1097 |
|
} |
1098 |
|
} else { |
1099 |
|
quant = 8; |
1100 |
|
} |
1101 |
|
mb->quant = quant; |
1102 |
|
} else { |
1103 |
|
mb->mb_type = MODE_DIRECT_NONE_MV; |
1104 |
|
mb->cbp = 0; |
1105 |
|
} |
1106 |
|
|
1107 |
|
mb->mode = MODE_INTER; |
1108 |
|
//DEBUG1("Switch bm_type=",mb->mb_type); |
1109 |
|
|
1110 |
|
switch (mb->mb_type) { |
1111 |
|
case MODE_DIRECT: |
1112 |
|
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], 1, zeromv); |
1113 |
|
|
1114 |
|
case MODE_DIRECT_NONE_MV: |
1115 |
|
{ // Because this file is a C file not C++ so I use '{' to define var |
1116 |
|
const int64_t TRB = dec->time_pp - dec->time_bp, TRD = |
1117 |
|
dec->time_pp; |
1118 |
|
int i; |
1119 |
|
|
1120 |
|
for (i = 0; i < 4; i++) { |
1121 |
|
mb->mvs[i].x = |
1122 |
|
(int32_t) ((TRB * last_mb->mvs[i].x) / TRD + |
1123 |
|
mb->mvs[0].x); |
1124 |
|
mb->b_mvs[i].x = |
1125 |
|
(int32_t) ((mb->mvs[0].x == |
1126 |
|
0) ? ((TRB - |
1127 |
|
TRD) * last_mb->mvs[i].x) / |
1128 |
|
TRD : mb->mvs[i].x - last_mb->mvs[i].x); |
1129 |
|
mb->mvs[i].y = |
1130 |
|
(int32_t) ((TRB * last_mb->mvs[i].y) / TRD + |
1131 |
|
mb->mvs[0].y); |
1132 |
|
mb->b_mvs[i].y = |
1133 |
|
(int32_t) ((mb->mvs[0].y == |
1134 |
|
0) ? ((TRB - |
1135 |
|
TRD) * last_mb->mvs[i].y) / |
1136 |
|
TRD : mb->mvs[i].y - last_mb->mvs[i].y); |
1137 |
|
} |
1138 |
|
//DEBUG("B-frame Direct!\n"); |
1139 |
|
} |
1140 |
|
mb->mode = MODE_INTER4V; |
1141 |
|
decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], |
1142 |
|
mb, x, y, mb->cbp, bs); |
1143 |
|
break; |
1144 |
|
|
1145 |
|
case MODE_INTERPOLATE: |
1146 |
|
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, |
1147 |
|
dec->p_fmv); |
1148 |
|
dec->p_fmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
1149 |
|
mb->mvs[0].x; |
1150 |
|
dec->p_fmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
1151 |
|
mb->mvs[0].y; |
1152 |
|
|
1153 |
|
get_b_motion_vector(dec, bs, x, y, &mb->b_mvs[0], |
1154 |
|
fcode_backward, dec->p_bmv); |
1155 |
|
dec->p_bmv.x = mb->b_mvs[1].x = mb->b_mvs[2].x = |
1156 |
|
mb->b_mvs[3].x = mb->b_mvs[0].x; |
1157 |
|
dec->p_bmv.y = mb->b_mvs[1].y = mb->b_mvs[2].y = |
1158 |
|
mb->b_mvs[3].y = mb->b_mvs[0].y; |
1159 |
|
|
1160 |
|
decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], |
1161 |
|
mb, x, y, mb->cbp, bs); |
1162 |
|
//DEBUG("B-frame Bidir!\n"); |
1163 |
|
break; |
1164 |
|
|
1165 |
|
case MODE_BACKWARD: |
1166 |
|
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_backward, |
1167 |
|
dec->p_bmv); |
1168 |
|
dec->p_bmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
1169 |
|
mb->mvs[0].x; |
1170 |
|
dec->p_bmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
1171 |
|
mb->mvs[0].y; |
1172 |
|
|
1173 |
|
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 0); |
1174 |
|
//DEBUG("B-frame Backward!\n"); |
1175 |
|
break; |
1176 |
|
|
1177 |
|
case MODE_FORWARD: |
1178 |
|
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, |
1179 |
|
dec->p_fmv); |
1180 |
|
dec->p_fmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
1181 |
|
mb->mvs[0].x; |
1182 |
|
dec->p_fmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
1183 |
|
mb->mvs[0].y; |
1184 |
|
|
1185 |
|
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
1186 |
|
//DEBUG("B-frame Forward!\n"); |
1187 |
|
break; |
1188 |
|
|
1189 |
|
default: |
1190 |
|
DEBUG1("Not support B-frame mb_type =", mb->mb_type); |
1191 |
|
} |
1192 |
|
|
1193 |
|
} // end of FOR |
1194 |
|
} |
1195 |
|
} |
1196 |
|
|
1197 |
|
// swap two MACROBLOCK array |
1198 |
|
void |
1199 |
|
mb_swap(MACROBLOCK ** mb1, |
1200 |
|
MACROBLOCK ** mb2) |
1201 |
|
{ |
1202 |
|
MACROBLOCK *temp = *mb1; |
1203 |
|
|
1204 |
|
*mb1 = *mb2; |
1205 |
|
*mb2 = temp; |
1206 |
|
} |
1207 |
|
|
1208 |
|
int |
1209 |
|
decoder_decode(DECODER * dec, |
1210 |
|
XVID_DEC_FRAME * frame) |
1211 |
{ |
{ |
1212 |
|
|
1213 |
Bitstream bs; |
Bitstream bs; |
1214 |
uint32_t rounding; |
uint32_t rounding; |
1215 |
uint32_t quant; |
uint32_t quant; |
1216 |
uint32_t fcode; |
uint32_t fcode_forward; |
1217 |
|
uint32_t fcode_backward; |
1218 |
uint32_t intra_dc_threshold; |
uint32_t intra_dc_threshold; |
1219 |
uint32_t vop_type; |
uint32_t vop_type; |
1220 |
|
|
1224 |
|
|
1225 |
// add by chenm001 <chenm001@163.com> |
// add by chenm001 <chenm001@163.com> |
1226 |
// for support B-frame to reference last 2 frame |
// for support B-frame to reference last 2 frame |
1227 |
vop_type=BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode, &intra_dc_threshold); |
dec->frames++; |
1228 |
|
vop_type = |
1229 |
|
BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode_forward, |
1230 |
|
&fcode_backward, &intra_dc_threshold); |
1231 |
|
|
1232 |
if (vop_type==I_VOP || vop_type==P_VOP){ |
dec->p_bmv.x = dec->p_bmv.y = dec->p_fmv.y = dec->p_fmv.y = 0; // init pred vector to 0 |
|
image_swap(&dec->refn[0], &dec->refn[1]); |
|
|
image_swap(&dec->cur, &dec->refn[0]); |
|
|
} |
|
1233 |
|
|
1234 |
switch (vop_type) |
switch (vop_type) { |
|
{ |
|
1235 |
case P_VOP : |
case P_VOP : |
1236 |
decoder_pframe(dec, &bs, rounding, quant, fcode, intra_dc_threshold); |
decoder_pframe(dec, &bs, rounding, quant, fcode_forward, |
1237 |
|
intra_dc_threshold); |
1238 |
|
DEBUG1("P_VOP Time=", dec->time); |
1239 |
break; |
break; |
1240 |
|
|
1241 |
case I_VOP : |
case I_VOP : |
|
//DEBUG1("",intra_dc_threshold); |
|
1242 |
decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
1243 |
|
DEBUG1("I_VOP Time=", dec->time); |
1244 |
break; |
break; |
1245 |
|
|
1246 |
case B_VOP : // ignore |
case B_VOP: |
1247 |
|
#ifdef BFRAMES |
1248 |
|
if (dec->time_pp > dec->time_bp) { |
1249 |
|
DEBUG1("B_VOP Time=", dec->time); |
1250 |
|
decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward); |
1251 |
|
} else { |
1252 |
|
DEBUG("broken B-frame!"); |
1253 |
|
} |
1254 |
|
#endif |
1255 |
break; |
break; |
1256 |
|
|
1257 |
case N_VOP : // vop not coded |
case N_VOP : // vop not coded |
1263 |
|
|
1264 |
frame->length = BitstreamPos(&bs) / 8; |
frame->length = BitstreamPos(&bs) / 8; |
1265 |
|
|
1266 |
start_timer(); |
#ifdef BFRAMES |
1267 |
|
// test if no B_VOP |
1268 |
|
if (dec->low_delay) { |
1269 |
|
#endif |
1270 |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
1271 |
frame->image, frame->stride, frame->colorspace); |
frame->image, frame->stride, frame->colorspace); |
1272 |
|
#ifdef BFRAMES |
1273 |
|
} else { |
1274 |
|
if (dec->frames >= 1) { |
1275 |
|
start_timer(); |
1276 |
|
if ((vop_type == I_VOP || vop_type == P_VOP)) { |
1277 |
|
image_output(&dec->refn[0], dec->width, dec->height, |
1278 |
|
dec->edged_width, frame->image, frame->stride, |
1279 |
|
frame->colorspace); |
1280 |
|
} else if (vop_type == B_VOP) { |
1281 |
|
image_output(&dec->cur, dec->width, dec->height, |
1282 |
|
dec->edged_width, frame->image, frame->stride, |
1283 |
|
frame->colorspace); |
1284 |
|
} |
1285 |
stop_conv_timer(); |
stop_conv_timer(); |
1286 |
|
} |
1287 |
|
} |
1288 |
|
#endif |
1289 |
|
|
1290 |
|
if (vop_type == I_VOP || vop_type == P_VOP) { |
1291 |
|
image_swap(&dec->refn[0], &dec->refn[1]); |
1292 |
|
image_swap(&dec->cur, &dec->refn[0]); |
1293 |
|
// swap MACROBLOCK |
1294 |
|
if (dec->low_delay && vop_type == P_VOP) |
1295 |
|
mb_swap(&dec->mbs, &dec->last_mbs); |
1296 |
|
} |
1297 |
|
|
1298 |
emms(); |
emms(); |
1299 |
|
|
1300 |
stop_global_timer(); |
stop_global_timer(); |
1301 |
|
|
1302 |
return XVID_ERR_OK; |
return XVID_ERR_OK; |
|
|
|
1303 |
} |
} |