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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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* History: |
* History: |
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* |
* |
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* 22.06.2002 added primative N_VOP support |
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* #define BFRAMES_DEC now enables Minchenm's bframe decoder |
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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> |
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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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* interlacing speedup - used transfers to re-interlace |
* interlacing speedup - used transfers to re-interlace |
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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: decoder.c,v 1.21 2002-06-22 07:23:09 suxen_drol Exp $ |
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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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#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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|
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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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dec->low_delay = 0; |
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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, dec->edged_width, dec->edged_height)) |
if (image_create(&dec->refn[0], dec->edged_width, dec->edged_height)) { |
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{ |
image_destroy(&dec->cur, 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 support B-frame to reference last 2 frame |
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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); |
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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); |
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); |
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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); |
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return XVID_ERR_MEMORY; |
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} |
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memset(dec->last_mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); |
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init_timer(); |
init_timer(); |
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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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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, 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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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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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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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 ; |
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|
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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 |
247 |
} |
} |
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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; |
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} |
} else { |
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else |
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{ |
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start_coeff = 0; |
start_coeff = 0; |
253 |
} |
} |
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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 |
257 |
{ |
{ |
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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); |
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} |
} |
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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); |
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} |
} |
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stop_iquant_timer(); |
stop_iquant_timer(); |
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stop_idct_timer(); |
stop_idct_timer(); |
278 |
} |
} |
279 |
|
|
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if (dec->interlacing && pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
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{ |
|
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next_block = stride; |
next_block = stride; |
282 |
stride *= 2; |
stride *= 2; |
283 |
} |
} |
304 |
|
|
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// decode an inter macroblock |
// decode an inter macroblock |
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|
|
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void decoder_mbinter(DECODER * dec, |
void |
308 |
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decoder_mbinter(DECODER * dec, |
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const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
310 |
const uint32_t x_pos, |
const uint32_t x_pos, |
311 |
const uint32_t y_pos, |
const uint32_t y_pos, |
331 |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
332 |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
333 |
|
|
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if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) |
if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) { |
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{ |
|
335 |
uv_dx = pMB->mvs[0].x; |
uv_dx = pMB->mvs[0].x; |
336 |
uv_dy = pMB->mvs[0].y; |
uv_dy = pMB->mvs[0].y; |
337 |
|
|
338 |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
339 |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
340 |
} |
} else { |
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else |
|
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{ |
|
341 |
int sum; |
int sum; |
342 |
|
|
343 |
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; |
344 |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dx = |
345 |
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(sum == |
346 |
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0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
347 |
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(ABS(sum) / 16) * 2)); |
348 |
|
|
349 |
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; |
350 |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dy = |
351 |
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(sum == |
352 |
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0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
353 |
|
(ABS(sum) / 16) * 2)); |
354 |
} |
} |
355 |
|
|
356 |
start_timer(); |
start_timer(); |
357 |
interpolate8x8_switch(dec->cur.y, dec->refn.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, |
358 |
interpolate8x8_switch(dec->cur.y, dec->refn.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); |
359 |
interpolate8x8_switch(dec->cur.y, dec->refn.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, |
360 |
interpolate8x8_switch(dec->cur.y, dec->refn.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, |
361 |
interpolate8x8_switch(dec->cur.u, dec->refn.u, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, rounding); |
rounding); |
362 |
interpolate8x8_switch(dec->cur.v, dec->refn.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, |
363 |
|
16 * y_pos + 8, pMB->mvs[2].x, pMB->mvs[2].y, stride, |
364 |
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rounding); |
365 |
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interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16 * x_pos + 8, |
366 |
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16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
367 |
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rounding); |
368 |
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interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8 * x_pos, 8 * y_pos, |
369 |
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uv_dx, uv_dy, stride2, rounding); |
370 |
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interpolate8x8_switch(dec->cur.v, dec->refn[0].v, 8 * x_pos, 8 * y_pos, |
371 |
|
uv_dx, uv_dy, stride2, rounding); |
372 |
stop_comp_timer(); |
stop_comp_timer(); |
373 |
|
|
374 |
for (i = 0; i < 6; i++) |
for (i = 0; i < 6; i++) { |
|
{ |
|
375 |
if (cbp & (1 << (5-i))) // coded |
if (cbp & (1 << (5-i))) // coded |
376 |
{ |
{ |
377 |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
381 |
stop_coding_timer(); |
stop_coding_timer(); |
382 |
|
|
383 |
start_timer(); |
start_timer(); |
384 |
if (dec->quant_type == 0) |
if (dec->quant_type == 0) { |
|
{ |
|
385 |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
386 |
} |
} else { |
|
else |
|
|
{ |
|
387 |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
388 |
} |
} |
389 |
stop_iquant_timer(); |
stop_iquant_timer(); |
394 |
} |
} |
395 |
} |
} |
396 |
|
|
397 |
if (dec->interlacing && pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
|
{ |
|
398 |
next_block = stride; |
next_block = stride; |
399 |
stride *= 2; |
stride *= 2; |
400 |
} |
} |
416 |
} |
} |
417 |
|
|
418 |
|
|
419 |
void decoder_iframe(DECODER * dec, Bitstream * bs, int quant, int intra_dc_threshold) |
void |
420 |
|
decoder_iframe(DECODER * dec, |
421 |
|
Bitstream * bs, |
422 |
|
int quant, |
423 |
|
int intra_dc_threshold) |
424 |
{ |
{ |
425 |
|
|
426 |
uint32_t x, y; |
uint32_t x, y; |
427 |
|
|
428 |
for (y = 0; y < dec->mb_height; y++) |
for (y = 0; y < dec->mb_height; y++) { |
429 |
{ |
for (x = 0; x < dec->mb_width; x++) { |
|
for (x = 0; x < dec->mb_width; x++) |
|
|
{ |
|
430 |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
431 |
|
|
432 |
uint32_t mcbpc; |
uint32_t mcbpc; |
441 |
|
|
442 |
acpred_flag = BitstreamGetBit(bs); |
acpred_flag = BitstreamGetBit(bs); |
443 |
|
|
444 |
if (mb->mode == MODE_STUFFING) |
if (mb->mode == MODE_STUFFING) { |
|
{ |
|
445 |
DEBUG("-- STUFFING ?"); |
DEBUG("-- STUFFING ?"); |
446 |
continue; |
continue; |
447 |
} |
} |
449 |
cbpy = get_cbpy(bs, 1); |
cbpy = get_cbpy(bs, 1); |
450 |
cbp = (cbpy << 2) | cbpc; |
cbp = (cbpy << 2) | cbpc; |
451 |
|
|
452 |
if (mb->mode == MODE_INTRA_Q) |
if (mb->mode == MODE_INTRA_Q) { |
|
{ |
|
453 |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
454 |
if (quant > 31) |
if (quant > 31) { |
|
{ |
|
455 |
quant = 31; |
quant = 31; |
456 |
} |
} else if (quant < 1) { |
|
else if (quant < 1) |
|
|
{ |
|
457 |
quant = 1; |
quant = 1; |
458 |
} |
} |
459 |
} |
} |
460 |
mb->quant = quant; |
mb->quant = quant; |
461 |
|
|
462 |
if (dec->interlacing) |
if (dec->interlacing) { |
|
{ |
|
463 |
mb->field_dct = BitstreamGetBit(bs); |
mb->field_dct = BitstreamGetBit(bs); |
464 |
DEBUG1("deci: field_dct: ", mb->field_dct); |
DEBUG1("deci: field_dct: ", mb->field_dct); |
465 |
} |
} |
466 |
|
|
467 |
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, |
468 |
|
intra_dc_threshold); |
469 |
} |
} |
470 |
} |
} |
471 |
|
|
472 |
} |
} |
473 |
|
|
474 |
|
|
475 |
void get_motion_vector(DECODER *dec, Bitstream *bs, int x, int y, int k, VECTOR * mv, int fcode) |
void |
476 |
|
get_motion_vector(DECODER * dec, |
477 |
|
Bitstream * bs, |
478 |
|
int x, |
479 |
|
int y, |
480 |
|
int k, |
481 |
|
VECTOR * mv, |
482 |
|
int fcode) |
483 |
{ |
{ |
484 |
|
|
485 |
int scale_fac = 1 << (fcode - 1); |
int scale_fac = 1 << (fcode - 1); |
488 |
int range = (64 * scale_fac); |
int range = (64 * scale_fac); |
489 |
|
|
490 |
VECTOR pmv[4]; |
VECTOR pmv[4]; |
491 |
uint32_t psad[4]; |
int32_t psad[4]; |
492 |
|
|
493 |
int mv_x, mv_y; |
int mv_x, mv_y; |
494 |
int pmv_x, pmv_y; |
int pmv_x, pmv_y; |
505 |
mv_x += pmv_x; |
mv_x += pmv_x; |
506 |
mv_y += pmv_y; |
mv_y += pmv_y; |
507 |
|
|
508 |
if (mv_x < low) |
if (mv_x < low) { |
|
{ |
|
509 |
mv_x += range; |
mv_x += range; |
510 |
} |
} else if (mv_x > high) { |
|
else if (mv_x > high) |
|
|
{ |
|
511 |
mv_x -= range; |
mv_x -= range; |
512 |
} |
} |
513 |
|
|
514 |
if (mv_y < low) |
if (mv_y < low) { |
|
{ |
|
515 |
mv_y += range; |
mv_y += range; |
516 |
} |
} else if (mv_y > high) { |
|
else if (mv_y > high) |
|
|
{ |
|
517 |
mv_y -= range; |
mv_y -= range; |
518 |
} |
} |
519 |
|
|
523 |
} |
} |
524 |
|
|
525 |
|
|
526 |
void decoder_pframe(DECODER * dec, Bitstream * bs, int rounding, int quant, int fcode, int intra_dc_threshold) |
void |
527 |
|
decoder_pframe(DECODER * dec, |
528 |
|
Bitstream * bs, |
529 |
|
int rounding, |
530 |
|
int quant, |
531 |
|
int fcode, |
532 |
|
int intra_dc_threshold) |
533 |
{ |
{ |
534 |
|
|
535 |
uint32_t x, y; |
uint32_t x, y; |
536 |
|
|
|
image_swap(&dec->cur, &dec->refn); |
|
|
|
|
537 |
start_timer(); |
start_timer(); |
538 |
image_setedges(&dec->refn, dec->edged_width, dec->edged_height, dec->width, dec->height, dec->interlacing); |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
539 |
|
dec->width, dec->height, dec->interlacing); |
540 |
stop_edges_timer(); |
stop_edges_timer(); |
541 |
|
|
542 |
for (y = 0; y < dec->mb_height; y++) |
for (y = 0; y < dec->mb_height; y++) { |
543 |
{ |
for (x = 0; x < dec->mb_width; x++) { |
|
for (x = 0; x < dec->mb_width; x++) |
|
|
{ |
|
544 |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
545 |
|
|
546 |
if (!BitstreamGetBit(bs)) // not_coded |
//if (!(dec->mb_skip[y*dec->mb_width + x]=BitstreamGetBit(bs))) // not_coded |
547 |
|
if (!(BitstreamGetBit(bs))) // not_coded |
548 |
{ |
{ |
549 |
uint32_t mcbpc; |
uint32_t mcbpc; |
550 |
uint32_t cbpc; |
uint32_t cbpc; |
560 |
|
|
561 |
intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); |
intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); |
562 |
|
|
563 |
if (intra) |
if (intra) { |
|
{ |
|
564 |
acpred_flag = BitstreamGetBit(bs); |
acpred_flag = BitstreamGetBit(bs); |
565 |
} |
} |
566 |
|
|
567 |
if (mb->mode == MODE_STUFFING) |
if (mb->mode == MODE_STUFFING) { |
|
{ |
|
568 |
DEBUG("-- STUFFING ?"); |
DEBUG("-- STUFFING ?"); |
569 |
continue; |
continue; |
570 |
} |
} |
572 |
cbpy = get_cbpy(bs, intra); |
cbpy = get_cbpy(bs, intra); |
573 |
cbp = (cbpy << 2) | cbpc; |
cbp = (cbpy << 2) | cbpc; |
574 |
|
|
575 |
if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) |
if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) { |
|
{ |
|
576 |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
577 |
if (quant > 31) |
if (quant > 31) { |
|
{ |
|
578 |
quant = 31; |
quant = 31; |
579 |
} |
} else if (mb->quant < 1) { |
|
else if (mb->quant < 1) |
|
|
{ |
|
580 |
quant = 1; |
quant = 1; |
581 |
} |
} |
582 |
} |
} |
583 |
mb->quant = quant; |
mb->quant = quant; |
584 |
|
|
585 |
if (dec->interlacing) |
if (dec->interlacing) { |
|
{ |
|
586 |
mb->field_dct = BitstreamGetBit(bs); |
mb->field_dct = BitstreamGetBit(bs); |
587 |
DEBUG1("decp: field_dct: ", mb->field_dct); |
DEBUG1("decp: field_dct: ", mb->field_dct); |
588 |
|
|
589 |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
|
{ |
|
590 |
mb->field_pred = BitstreamGetBit(bs); |
mb->field_pred = BitstreamGetBit(bs); |
591 |
DEBUG1("decp: field_pred: ", mb->field_pred); |
DEBUG1("decp: field_pred: ", mb->field_pred); |
592 |
|
|
593 |
if (mb->field_pred) |
if (mb->field_pred) { |
|
{ |
|
594 |
mb->field_for_top = BitstreamGetBit(bs); |
mb->field_for_top = BitstreamGetBit(bs); |
595 |
DEBUG1("decp: field_for_top: ", mb->field_for_top); |
DEBUG1("decp: field_for_top: ", mb->field_for_top); |
596 |
mb->field_for_bot = BitstreamGetBit(bs); |
mb->field_for_bot = BitstreamGetBit(bs); |
599 |
} |
} |
600 |
} |
} |
601 |
|
|
602 |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
603 |
{ |
if (dec->interlacing && mb->field_pred) { |
604 |
if (dec->interlacing && mb->field_pred) |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
605 |
{ |
fcode); |
606 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], |
607 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], fcode); |
fcode); |
608 |
|
} else { |
609 |
|
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
610 |
|
fcode); |
611 |
|
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
612 |
|
mb->mvs[0].x; |
613 |
|
mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
614 |
|
mb->mvs[0].y; |
615 |
} |
} |
616 |
else |
} else if (mb->mode == |
617 |
{ |
MODE_INTER4V /* || mb->mode == MODE_INTER4V_Q */ ) { |
|
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
|
|
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
|
|
mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = mb->mvs[0].y; |
|
|
} |
|
|
} |
|
|
else if (mb->mode == MODE_INTER4V /* || mb->mode == MODE_INTER4V_Q */) |
|
|
{ |
|
618 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
619 |
get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode); |
get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode); |
620 |
get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode); |
get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode); |
621 |
get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode); |
get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode); |
622 |
} |
} else // MODE_INTRA, MODE_INTRA_Q |
|
else // MODE_INTRA, MODE_INTRA_Q |
|
623 |
{ |
{ |
624 |
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 = |
625 |
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; |
0; |
626 |
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 = |
627 |
|
0; |
628 |
|
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
629 |
|
intra_dc_threshold); |
630 |
continue; |
continue; |
631 |
} |
} |
632 |
|
|
633 |
decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, rounding); |
decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
634 |
} |
rounding); |
635 |
else // not coded |
} else // not coded |
636 |
{ |
{ |
637 |
|
//DEBUG2("P-frame MB at (X,Y)=",x,y); |
638 |
mb->mode = MODE_NOT_CODED; |
mb->mode = MODE_NOT_CODED; |
639 |
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; |
640 |
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; |
643 |
|
|
644 |
start_timer(); |
start_timer(); |
645 |
|
|
646 |
transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x), |
transfer8x8_copy(dec->cur.y + (16 * y) * dec->edged_width + |
647 |
dec->refn.y + (16*y)*dec->edged_width + (16*x), |
(16 * x), |
648 |
dec->edged_width); |
dec->refn[0].y + (16 * y) * dec->edged_width + |
649 |
|
(16 * x), dec->edged_width); |
650 |
transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x+8), |
|
651 |
dec->refn.y + (16*y)*dec->edged_width + (16*x+8), |
transfer8x8_copy(dec->cur.y + (16 * y) * dec->edged_width + |
652 |
dec->edged_width); |
(16 * x + 8), |
653 |
|
dec->refn[0].y + (16 * y) * dec->edged_width + |
654 |
transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x), |
(16 * x + 8), dec->edged_width); |
655 |
dec->refn.y + (16*y+8)*dec->edged_width + (16*x), |
|
656 |
dec->edged_width); |
transfer8x8_copy(dec->cur.y + (16 * y + 8) * dec->edged_width + |
657 |
|
(16 * x), |
658 |
transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x+8), |
dec->refn[0].y + (16 * y + |
659 |
dec->refn.y + (16*y+8)*dec->edged_width + (16*x+8), |
8) * dec->edged_width + |
660 |
dec->edged_width); |
(16 * x), dec->edged_width); |
661 |
|
|
662 |
transfer8x8_copy(dec->cur.u + (8*y)*dec->edged_width/2 + (8*x), |
transfer8x8_copy(dec->cur.y + (16 * y + 8) * dec->edged_width + |
663 |
dec->refn.u + (8*y)*dec->edged_width/2 + (8*x), |
(16 * x + 8), |
664 |
|
dec->refn[0].y + (16 * y + |
665 |
|
8) * dec->edged_width + |
666 |
|
(16 * x + 8), dec->edged_width); |
667 |
|
|
668 |
|
transfer8x8_copy(dec->cur.u + (8 * y) * dec->edged_width / 2 + |
669 |
|
(8 * x), |
670 |
|
dec->refn[0].u + |
671 |
|
(8 * y) * dec->edged_width / 2 + (8 * x), |
672 |
dec->edged_width/2); |
dec->edged_width/2); |
673 |
|
|
674 |
transfer8x8_copy(dec->cur.v + (8*y)*dec->edged_width/2 + (8*x), |
transfer8x8_copy(dec->cur.v + (8 * y) * dec->edged_width / 2 + |
675 |
dec->refn.v + (8*y)*dec->edged_width/2 + (8*x), |
(8 * x), |
676 |
|
dec->refn[0].v + |
677 |
|
(8 * y) * dec->edged_width / 2 + (8 * x), |
678 |
dec->edged_width/2); |
dec->edged_width/2); |
679 |
|
|
680 |
stop_transfer_timer(); |
stop_transfer_timer(); |
683 |
} |
} |
684 |
} |
} |
685 |
|
|
686 |
int decoder_decode(DECODER * dec, XVID_DEC_FRAME * frame) |
|
687 |
|
// add by MinChen <chenm001@163.com> |
688 |
|
// decode B-frame motion vector |
689 |
|
void |
690 |
|
get_b_motion_vector(DECODER * dec, |
691 |
|
Bitstream * bs, |
692 |
|
int x, |
693 |
|
int y, |
694 |
|
VECTOR * mv, |
695 |
|
int fcode, |
696 |
|
const VECTOR pmv) |
697 |
|
{ |
698 |
|
int scale_fac = 1 << (fcode - 1); |
699 |
|
int high = (32 * scale_fac) - 1; |
700 |
|
int low = ((-32) * scale_fac); |
701 |
|
int range = (64 * scale_fac); |
702 |
|
|
703 |
|
int mv_x, mv_y; |
704 |
|
int pmv_x, pmv_y; |
705 |
|
|
706 |
|
pmv_x = pmv.x; |
707 |
|
pmv_y = pmv.y; |
708 |
|
|
709 |
|
mv_x = get_mv(bs, fcode); |
710 |
|
mv_y = get_mv(bs, fcode); |
711 |
|
|
712 |
|
mv_x += pmv_x; |
713 |
|
mv_y += pmv_y; |
714 |
|
|
715 |
|
if (mv_x < low) { |
716 |
|
mv_x += range; |
717 |
|
} else if (mv_x > high) { |
718 |
|
mv_x -= range; |
719 |
|
} |
720 |
|
|
721 |
|
if (mv_y < low) { |
722 |
|
mv_y += range; |
723 |
|
} else if (mv_y > high) { |
724 |
|
mv_y -= range; |
725 |
|
} |
726 |
|
|
727 |
|
mv->x = mv_x; |
728 |
|
mv->y = mv_y; |
729 |
|
} |
730 |
|
|
731 |
|
|
732 |
|
// add by MinChen <chenm001@163.com> |
733 |
|
// decode an B-frame forward & backward inter macroblock |
734 |
|
void |
735 |
|
decoder_bf_mbinter(DECODER * dec, |
736 |
|
const MACROBLOCK * pMB, |
737 |
|
const uint32_t x_pos, |
738 |
|
const uint32_t y_pos, |
739 |
|
const uint32_t cbp, |
740 |
|
Bitstream * bs, |
741 |
|
const uint32_t quant, |
742 |
|
const uint8_t ref) |
743 |
|
{ |
744 |
|
|
745 |
|
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
746 |
|
DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
747 |
|
|
748 |
|
uint32_t stride = dec->edged_width; |
749 |
|
uint32_t stride2 = stride / 2; |
750 |
|
uint32_t next_block = stride * 8; |
751 |
|
uint32_t i; |
752 |
|
uint32_t iQuant = pMB->quant; |
753 |
|
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
754 |
|
int uv_dx, uv_dy; |
755 |
|
|
756 |
|
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
757 |
|
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
758 |
|
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
759 |
|
|
760 |
|
if (!(pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
761 |
|
uv_dx = pMB->mvs[0].x; |
762 |
|
uv_dy = pMB->mvs[0].y; |
763 |
|
|
764 |
|
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
765 |
|
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
766 |
|
} else { |
767 |
|
int sum; |
768 |
|
|
769 |
|
sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
770 |
|
uv_dx = |
771 |
|
(sum == |
772 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
773 |
|
(ABS(sum) / 16) * 2)); |
774 |
|
|
775 |
|
sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
776 |
|
uv_dy = |
777 |
|
(sum == |
778 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
779 |
|
(ABS(sum) / 16) * 2)); |
780 |
|
} |
781 |
|
|
782 |
|
start_timer(); |
783 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos, 16 * y_pos, |
784 |
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
785 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos + 8, |
786 |
|
16 * y_pos, pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); |
787 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos, |
788 |
|
16 * y_pos + 8, pMB->mvs[2].x, pMB->mvs[2].y, stride, |
789 |
|
0); |
790 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos + 8, |
791 |
|
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
792 |
|
0); |
793 |
|
interpolate8x8_switch(dec->cur.u, dec->refn[ref].u, 8 * x_pos, 8 * y_pos, |
794 |
|
uv_dx, uv_dy, stride2, 0); |
795 |
|
interpolate8x8_switch(dec->cur.v, dec->refn[ref].v, 8 * x_pos, 8 * y_pos, |
796 |
|
uv_dx, uv_dy, stride2, 0); |
797 |
|
stop_comp_timer(); |
798 |
|
|
799 |
|
for (i = 0; i < 6; i++) { |
800 |
|
if (cbp & (1 << (5 - i))) // coded |
801 |
|
{ |
802 |
|
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear |
803 |
|
|
804 |
|
start_timer(); |
805 |
|
get_inter_block(bs, &block[i * 64]); |
806 |
|
stop_coding_timer(); |
807 |
|
|
808 |
|
start_timer(); |
809 |
|
if (dec->quant_type == 0) { |
810 |
|
dequant_inter(&data[i * 64], &block[i * 64], iQuant); |
811 |
|
} else { |
812 |
|
dequant4_inter(&data[i * 64], &block[i * 64], iQuant); |
813 |
|
} |
814 |
|
stop_iquant_timer(); |
815 |
|
|
816 |
|
start_timer(); |
817 |
|
idct(&data[i * 64]); |
818 |
|
stop_idct_timer(); |
819 |
|
} |
820 |
|
} |
821 |
|
|
822 |
|
if (dec->interlacing && pMB->field_dct) { |
823 |
|
next_block = stride; |
824 |
|
stride *= 2; |
825 |
|
} |
826 |
|
|
827 |
|
start_timer(); |
828 |
|
if (cbp & 32) |
829 |
|
transfer_16to8add(pY_Cur, &data[0 * 64], stride); |
830 |
|
if (cbp & 16) |
831 |
|
transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); |
832 |
|
if (cbp & 8) |
833 |
|
transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); |
834 |
|
if (cbp & 4) |
835 |
|
transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride); |
836 |
|
if (cbp & 2) |
837 |
|
transfer_16to8add(pU_Cur, &data[4 * 64], stride2); |
838 |
|
if (cbp & 1) |
839 |
|
transfer_16to8add(pV_Cur, &data[5 * 64], stride2); |
840 |
|
stop_transfer_timer(); |
841 |
|
} |
842 |
|
|
843 |
|
|
844 |
|
// add by MinChen <chenm001@163.com> |
845 |
|
// decode an B-frame direct & inter macroblock |
846 |
|
void |
847 |
|
decoder_bf_interpolate_mbinter(DECODER * dec, |
848 |
|
IMAGE forward, |
849 |
|
IMAGE backward, |
850 |
|
const MACROBLOCK * pMB, |
851 |
|
const uint32_t x_pos, |
852 |
|
const uint32_t y_pos, |
853 |
|
const uint32_t cbp, |
854 |
|
Bitstream * bs) |
855 |
|
{ |
856 |
|
|
857 |
|
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
858 |
|
DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
859 |
|
|
860 |
|
uint32_t stride = dec->edged_width; |
861 |
|
uint32_t stride2 = stride / 2; |
862 |
|
uint32_t next_block = stride * 8; |
863 |
|
uint32_t iQuant = pMB->quant; |
864 |
|
int uv_dx, uv_dy; |
865 |
|
int b_uv_dx, b_uv_dy; |
866 |
|
uint32_t i; |
867 |
|
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
868 |
|
|
869 |
|
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
870 |
|
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
871 |
|
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
872 |
|
|
873 |
|
if ((pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
874 |
|
uv_dx = pMB->mvs[0].x; |
875 |
|
uv_dy = pMB->mvs[0].y; |
876 |
|
|
877 |
|
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
878 |
|
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
879 |
|
|
880 |
|
b_uv_dx = pMB->b_mvs[0].x; |
881 |
|
b_uv_dy = pMB->b_mvs[0].y; |
882 |
|
|
883 |
|
b_uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
884 |
|
b_uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
885 |
|
} else { |
886 |
|
int sum; |
887 |
|
|
888 |
|
sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
889 |
|
uv_dx = |
890 |
|
(sum == |
891 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
892 |
|
(ABS(sum) / 16) * 2)); |
893 |
|
|
894 |
|
sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
895 |
|
uv_dy = |
896 |
|
(sum == |
897 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
898 |
|
(ABS(sum) / 16) * 2)); |
899 |
|
|
900 |
|
sum = |
901 |
|
pMB->b_mvs[0].x + pMB->b_mvs[1].x + pMB->b_mvs[2].x + |
902 |
|
pMB->b_mvs[3].x; |
903 |
|
b_uv_dx = |
904 |
|
(sum == |
905 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
906 |
|
(ABS(sum) / 16) * 2)); |
907 |
|
|
908 |
|
sum = |
909 |
|
pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + |
910 |
|
pMB->b_mvs[3].y; |
911 |
|
b_uv_dy = |
912 |
|
(sum == |
913 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
914 |
|
(ABS(sum) / 16) * 2)); |
915 |
|
} |
916 |
|
|
917 |
|
|
918 |
|
start_timer(); |
919 |
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos, |
920 |
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
921 |
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, 16 * y_pos, |
922 |
|
pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); |
923 |
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos + 8, |
924 |
|
pMB->mvs[2].x, pMB->mvs[2].y, stride, 0); |
925 |
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, |
926 |
|
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
927 |
|
0); |
928 |
|
interpolate8x8_switch(dec->cur.u, forward.u, 8 * x_pos, 8 * y_pos, uv_dx, |
929 |
|
uv_dy, stride2, 0); |
930 |
|
interpolate8x8_switch(dec->cur.v, forward.v, 8 * x_pos, 8 * y_pos, uv_dx, |
931 |
|
uv_dy, stride2, 0); |
932 |
|
|
933 |
|
|
934 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos, 16 * y_pos, |
935 |
|
pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0); |
936 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos + 8, |
937 |
|
16 * y_pos, pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, |
938 |
|
0); |
939 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos, |
940 |
|
16 * y_pos + 8, pMB->b_mvs[2].x, pMB->b_mvs[2].y, |
941 |
|
stride, 0); |
942 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos + 8, |
943 |
|
16 * y_pos + 8, pMB->b_mvs[3].x, pMB->b_mvs[3].y, |
944 |
|
stride, 0); |
945 |
|
interpolate8x8_switch(dec->refn[2].u, backward.u, 8 * x_pos, 8 * y_pos, |
946 |
|
b_uv_dx, b_uv_dy, stride2, 0); |
947 |
|
interpolate8x8_switch(dec->refn[2].v, backward.v, 8 * x_pos, 8 * y_pos, |
948 |
|
b_uv_dx, b_uv_dy, stride2, 0); |
949 |
|
|
950 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos, 16 * y_pos, |
951 |
|
stride); |
952 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos + 8, 16 * y_pos, |
953 |
|
stride); |
954 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos, 16 * y_pos + 8, |
955 |
|
stride); |
956 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos + 8, |
957 |
|
16 * y_pos + 8, stride); |
958 |
|
interpolate8x8_c(dec->cur.u, dec->refn[2].u, 8 * x_pos, 8 * y_pos, |
959 |
|
stride2); |
960 |
|
interpolate8x8_c(dec->cur.v, dec->refn[2].v, 8 * x_pos, 8 * y_pos, |
961 |
|
stride2); |
962 |
|
|
963 |
|
stop_comp_timer(); |
964 |
|
|
965 |
|
for (i = 0; i < 6; i++) { |
966 |
|
if (cbp & (1 << (5 - i))) // coded |
967 |
|
{ |
968 |
|
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear |
969 |
|
|
970 |
|
start_timer(); |
971 |
|
get_inter_block(bs, &block[i * 64]); |
972 |
|
stop_coding_timer(); |
973 |
|
|
974 |
|
start_timer(); |
975 |
|
if (dec->quant_type == 0) { |
976 |
|
dequant_inter(&data[i * 64], &block[i * 64], iQuant); |
977 |
|
} else { |
978 |
|
dequant4_inter(&data[i * 64], &block[i * 64], iQuant); |
979 |
|
} |
980 |
|
stop_iquant_timer(); |
981 |
|
|
982 |
|
start_timer(); |
983 |
|
idct(&data[i * 64]); |
984 |
|
stop_idct_timer(); |
985 |
|
} |
986 |
|
} |
987 |
|
|
988 |
|
if (dec->interlacing && pMB->field_dct) { |
989 |
|
next_block = stride; |
990 |
|
stride *= 2; |
991 |
|
} |
992 |
|
|
993 |
|
start_timer(); |
994 |
|
if (cbp & 32) |
995 |
|
transfer_16to8add(pY_Cur, &data[0 * 64], stride); |
996 |
|
if (cbp & 16) |
997 |
|
transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); |
998 |
|
if (cbp & 8) |
999 |
|
transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); |
1000 |
|
if (cbp & 4) |
1001 |
|
transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride); |
1002 |
|
if (cbp & 2) |
1003 |
|
transfer_16to8add(pU_Cur, &data[4 * 64], stride2); |
1004 |
|
if (cbp & 1) |
1005 |
|
transfer_16to8add(pV_Cur, &data[5 * 64], stride2); |
1006 |
|
stop_transfer_timer(); |
1007 |
|
} |
1008 |
|
|
1009 |
|
|
1010 |
|
// add by MinChen <chenm001@163.com> |
1011 |
|
// for decode B-frame dbquant |
1012 |
|
int32_t __inline |
1013 |
|
get_dbquant(Bitstream * bs) |
1014 |
|
{ |
1015 |
|
if (!BitstreamGetBit(bs)) // '0' |
1016 |
|
return (0); |
1017 |
|
else if (!BitstreamGetBit(bs)) // '10' |
1018 |
|
return (-2); |
1019 |
|
else |
1020 |
|
return (2); // '11' |
1021 |
|
} |
1022 |
|
|
1023 |
|
// add by MinChen <chenm001@163.com> |
1024 |
|
// for decode B-frame mb_type |
1025 |
|
// bit ret_value |
1026 |
|
// 1 0 |
1027 |
|
// 01 1 |
1028 |
|
// 001 2 |
1029 |
|
// 0001 3 |
1030 |
|
int32_t __inline |
1031 |
|
get_mbtype(Bitstream * bs) |
1032 |
|
{ |
1033 |
|
int32_t mb_type; |
1034 |
|
|
1035 |
|
for (mb_type = 0; mb_type <= 3; mb_type++) { |
1036 |
|
if (BitstreamGetBit(bs)) |
1037 |
|
break; |
1038 |
|
} |
1039 |
|
|
1040 |
|
if (mb_type <= 3) |
1041 |
|
return (mb_type); |
1042 |
|
else |
1043 |
|
return (-1); |
1044 |
|
} |
1045 |
|
|
1046 |
|
void |
1047 |
|
decoder_bframe(DECODER * dec, |
1048 |
|
Bitstream * bs, |
1049 |
|
int quant, |
1050 |
|
int fcode_forward, |
1051 |
|
int fcode_backward) |
1052 |
|
{ |
1053 |
|
|
1054 |
|
uint32_t x, y; |
1055 |
|
VECTOR mv, zeromv; |
1056 |
|
|
1057 |
|
start_timer(); |
1058 |
|
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
1059 |
|
dec->width, dec->height, dec->interlacing); |
1060 |
|
//image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height, dec->width, dec->height, dec->interlacing); |
1061 |
|
stop_edges_timer(); |
1062 |
|
|
1063 |
|
|
1064 |
|
for (y = 0; y < dec->mb_height; y++) { |
1065 |
|
// Initialize Pred Motion Vector |
1066 |
|
dec->p_fmv.x = dec->p_fmv.y = dec->p_bmv.x = dec->p_bmv.y = 0; |
1067 |
|
for (x = 0; x < dec->mb_width; x++) { |
1068 |
|
MACROBLOCK *mb = &dec->mbs[y * dec->mb_width + x]; |
1069 |
|
MACROBLOCK *last_mb = &dec->last_mbs[y * dec->mb_width + x]; |
1070 |
|
|
1071 |
|
mb->mvs[0].x = mb->mvs[0].y = zeromv.x = zeromv.y = mv.x = mv.y = |
1072 |
|
0; |
1073 |
|
|
1074 |
|
// the last P_VOP is skip macroblock ? |
1075 |
|
if (last_mb->mode == MODE_NOT_CODED) { |
1076 |
|
//DEBUG2("Skip MB in B-frame at (X,Y)=!",x,y); |
1077 |
|
mb->mb_type = MODE_FORWARD; |
1078 |
|
mb->cbp = 0; |
1079 |
|
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
1080 |
|
mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = mb->mvs[0].y; |
1081 |
|
mb->quant = 8; |
1082 |
|
|
1083 |
|
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
1084 |
|
continue; |
1085 |
|
} |
1086 |
|
//t=BitstreamShowBits(bs,32); |
1087 |
|
|
1088 |
|
if (!BitstreamGetBit(bs)) { // modb=='0' |
1089 |
|
const uint8_t modb2 = BitstreamGetBit(bs); |
1090 |
|
|
1091 |
|
mb->mb_type = get_mbtype(bs); |
1092 |
|
|
1093 |
|
if (!modb2) { // modb=='00' |
1094 |
|
mb->cbp = BitstreamGetBits(bs, 6); |
1095 |
|
} else { |
1096 |
|
mb->cbp = 0; |
1097 |
|
} |
1098 |
|
if (mb->mb_type && mb->cbp) { |
1099 |
|
quant += get_dbquant(bs); |
1100 |
|
|
1101 |
|
if (quant > 31) { |
1102 |
|
quant = 31; |
1103 |
|
} else if (mb->quant < 1) { |
1104 |
|
quant = 1; |
1105 |
|
} |
1106 |
|
} else { |
1107 |
|
quant = 8; |
1108 |
|
} |
1109 |
|
mb->quant = quant; |
1110 |
|
} else { |
1111 |
|
mb->mb_type = MODE_DIRECT_NONE_MV; |
1112 |
|
mb->cbp = 0; |
1113 |
|
} |
1114 |
|
|
1115 |
|
mb->mode = MODE_INTER; |
1116 |
|
//DEBUG1("Switch bm_type=",mb->mb_type); |
1117 |
|
|
1118 |
|
switch (mb->mb_type) { |
1119 |
|
case MODE_DIRECT: |
1120 |
|
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], 1, zeromv); |
1121 |
|
|
1122 |
|
case MODE_DIRECT_NONE_MV: |
1123 |
|
{ // Because this file is a C file not C++ so I use '{' to define var |
1124 |
|
const int64_t TRB = dec->time_pp - dec->time_bp, TRD = |
1125 |
|
dec->time_pp; |
1126 |
|
int i; |
1127 |
|
|
1128 |
|
for (i = 0; i < 4; i++) { |
1129 |
|
mb->mvs[i].x = |
1130 |
|
(int32_t) ((TRB * last_mb->mvs[i].x) / TRD + |
1131 |
|
mb->mvs[0].x); |
1132 |
|
mb->b_mvs[i].x = |
1133 |
|
(int32_t) ((mb->mvs[0].x == |
1134 |
|
0) ? ((TRB - |
1135 |
|
TRD) * last_mb->mvs[i].x) / |
1136 |
|
TRD : mb->mvs[i].x - last_mb->mvs[i].x); |
1137 |
|
mb->mvs[i].y = |
1138 |
|
(int32_t) ((TRB * last_mb->mvs[i].y) / TRD + |
1139 |
|
mb->mvs[0].y); |
1140 |
|
mb->b_mvs[i].y = |
1141 |
|
(int32_t) ((mb->mvs[0].y == |
1142 |
|
0) ? ((TRB - |
1143 |
|
TRD) * last_mb->mvs[i].y) / |
1144 |
|
TRD : mb->mvs[i].y - last_mb->mvs[i].y); |
1145 |
|
} |
1146 |
|
//DEBUG("B-frame Direct!\n"); |
1147 |
|
} |
1148 |
|
mb->mode = MODE_INTER4V; |
1149 |
|
decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], |
1150 |
|
mb, x, y, mb->cbp, bs); |
1151 |
|
break; |
1152 |
|
|
1153 |
|
case MODE_INTERPOLATE: |
1154 |
|
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, |
1155 |
|
dec->p_fmv); |
1156 |
|
dec->p_fmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
1157 |
|
mb->mvs[0].x; |
1158 |
|
dec->p_fmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
1159 |
|
mb->mvs[0].y; |
1160 |
|
|
1161 |
|
get_b_motion_vector(dec, bs, x, y, &mb->b_mvs[0], |
1162 |
|
fcode_backward, dec->p_bmv); |
1163 |
|
dec->p_bmv.x = mb->b_mvs[1].x = mb->b_mvs[2].x = |
1164 |
|
mb->b_mvs[3].x = mb->b_mvs[0].x; |
1165 |
|
dec->p_bmv.y = mb->b_mvs[1].y = mb->b_mvs[2].y = |
1166 |
|
mb->b_mvs[3].y = mb->b_mvs[0].y; |
1167 |
|
|
1168 |
|
decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], |
1169 |
|
mb, x, y, mb->cbp, bs); |
1170 |
|
//DEBUG("B-frame Bidir!\n"); |
1171 |
|
break; |
1172 |
|
|
1173 |
|
case MODE_BACKWARD: |
1174 |
|
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_backward, |
1175 |
|
dec->p_bmv); |
1176 |
|
dec->p_bmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
1177 |
|
mb->mvs[0].x; |
1178 |
|
dec->p_bmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
1179 |
|
mb->mvs[0].y; |
1180 |
|
|
1181 |
|
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 0); |
1182 |
|
//DEBUG("B-frame Backward!\n"); |
1183 |
|
break; |
1184 |
|
|
1185 |
|
case MODE_FORWARD: |
1186 |
|
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, |
1187 |
|
dec->p_fmv); |
1188 |
|
dec->p_fmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
1189 |
|
mb->mvs[0].x; |
1190 |
|
dec->p_fmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
1191 |
|
mb->mvs[0].y; |
1192 |
|
|
1193 |
|
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
1194 |
|
//DEBUG("B-frame Forward!\n"); |
1195 |
|
break; |
1196 |
|
|
1197 |
|
default: |
1198 |
|
DEBUG1("Not support B-frame mb_type =", mb->mb_type); |
1199 |
|
} |
1200 |
|
|
1201 |
|
} // end of FOR |
1202 |
|
} |
1203 |
|
} |
1204 |
|
|
1205 |
|
// swap two MACROBLOCK array |
1206 |
|
void |
1207 |
|
mb_swap(MACROBLOCK ** mb1, |
1208 |
|
MACROBLOCK ** mb2) |
1209 |
|
{ |
1210 |
|
MACROBLOCK *temp = *mb1; |
1211 |
|
|
1212 |
|
*mb1 = *mb2; |
1213 |
|
*mb2 = temp; |
1214 |
|
} |
1215 |
|
|
1216 |
|
int |
1217 |
|
decoder_decode(DECODER * dec, |
1218 |
|
XVID_DEC_FRAME * frame) |
1219 |
{ |
{ |
1220 |
|
|
1221 |
Bitstream bs; |
Bitstream bs; |
1222 |
uint32_t rounding; |
uint32_t rounding; |
1223 |
uint32_t quant; |
uint32_t quant; |
1224 |
uint32_t fcode; |
uint32_t fcode_forward; |
1225 |
|
uint32_t fcode_backward; |
1226 |
uint32_t intra_dc_threshold; |
uint32_t intra_dc_threshold; |
1227 |
|
uint32_t vop_type; |
1228 |
|
|
1229 |
start_global_timer(); |
start_global_timer(); |
1230 |
|
|
1231 |
BitstreamInit(&bs, frame->bitstream, frame->length); |
BitstreamInit(&bs, frame->bitstream, frame->length); |
1232 |
|
|
1233 |
switch (BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode, &intra_dc_threshold)) |
// add by chenm001 <chenm001@163.com> |
1234 |
{ |
// for support B-frame to reference last 2 frame |
1235 |
|
dec->frames++; |
1236 |
|
vop_type = |
1237 |
|
BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode_forward, |
1238 |
|
&fcode_backward, &intra_dc_threshold); |
1239 |
|
|
1240 |
|
dec->p_bmv.x = dec->p_bmv.y = dec->p_fmv.y = dec->p_fmv.y = 0; // init pred vector to 0 |
1241 |
|
|
1242 |
|
switch (vop_type) { |
1243 |
case P_VOP : |
case P_VOP : |
1244 |
decoder_pframe(dec, &bs, rounding, quant, fcode, intra_dc_threshold); |
decoder_pframe(dec, &bs, rounding, quant, fcode_forward, |
1245 |
|
intra_dc_threshold); |
1246 |
|
DEBUG1("P_VOP Time=", dec->time); |
1247 |
break; |
break; |
1248 |
|
|
1249 |
case I_VOP : |
case I_VOP : |
|
//DEBUG1("",intra_dc_threshold); |
|
1250 |
decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
1251 |
|
DEBUG1("I_VOP Time=", dec->time); |
1252 |
break; |
break; |
1253 |
|
|
1254 |
case B_VOP : // ignore |
case B_VOP: |
1255 |
|
#ifdef BFRAMES_DEC |
1256 |
|
if (dec->time_pp > dec->time_bp) { |
1257 |
|
DEBUG1("B_VOP Time=", dec->time); |
1258 |
|
decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward); |
1259 |
|
} else { |
1260 |
|
DEBUG("broken B-frame!"); |
1261 |
|
} |
1262 |
|
#else |
1263 |
|
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
1264 |
|
#endif |
1265 |
break; |
break; |
1266 |
|
|
1267 |
case N_VOP : // vop not coded |
case N_VOP : // vop not coded |
1268 |
|
// when low_delay==0, N_VOP's should interpolate between the past and future frames |
1269 |
|
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
1270 |
break; |
break; |
1271 |
|
|
1272 |
default : |
default : |
1275 |
|
|
1276 |
frame->length = BitstreamPos(&bs) / 8; |
frame->length = BitstreamPos(&bs) / 8; |
1277 |
|
|
1278 |
start_timer(); |
#ifdef BFRAMES_DEC |
1279 |
|
// test if no B_VOP |
1280 |
|
if (dec->low_delay) { |
1281 |
|
#endif |
1282 |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
1283 |
frame->image, frame->stride, frame->colorspace); |
frame->image, frame->stride, frame->colorspace); |
1284 |
|
#ifdef BFRAMES_DEC |
1285 |
|
} else { |
1286 |
|
if (dec->frames >= 1) { |
1287 |
|
start_timer(); |
1288 |
|
if ((vop_type == I_VOP || vop_type == P_VOP)) { |
1289 |
|
image_output(&dec->refn[0], dec->width, dec->height, |
1290 |
|
dec->edged_width, frame->image, frame->stride, |
1291 |
|
frame->colorspace); |
1292 |
|
} else if (vop_type == B_VOP) { |
1293 |
|
image_output(&dec->cur, dec->width, dec->height, |
1294 |
|
dec->edged_width, frame->image, frame->stride, |
1295 |
|
frame->colorspace); |
1296 |
|
} |
1297 |
stop_conv_timer(); |
stop_conv_timer(); |
1298 |
|
} |
1299 |
|
} |
1300 |
|
#endif |
1301 |
|
|
1302 |
|
if (vop_type == I_VOP || vop_type == P_VOP) { |
1303 |
|
image_swap(&dec->refn[0], &dec->refn[1]); |
1304 |
|
image_swap(&dec->cur, &dec->refn[0]); |
1305 |
|
// swap MACROBLOCK |
1306 |
|
if (dec->low_delay && vop_type == P_VOP) |
1307 |
|
mb_swap(&dec->mbs, &dec->last_mbs); |
1308 |
|
} |
1309 |
|
|
1310 |
emms(); |
emms(); |
1311 |
|
|
1312 |
stop_global_timer(); |
stop_global_timer(); |
1313 |
|
|
1314 |
return XVID_ERR_OK; |
return XVID_ERR_OK; |
|
|
|
1315 |
} |
} |