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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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* 15.07.2002 fix a bug in B-frame decode at DIRECT mode |
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* MinChen <chenm001@163.com> |
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* 10.07.2002 added BFRAMES_DEC_DEBUG support |
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* Fix a little bug for low_delay flage |
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* MinChen <chenm001@163.com> |
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* 28.06.2002 added basic resync support to iframe/pframe_decode() |
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* 22.06.2002 added primative N_VOP support |
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* #define BFRAMES_DEC now enables Minchen'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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* $Id$ |
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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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#ifdef BFRAMES_DEC_DEBUG |
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#define BFRAMES_DEC |
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#endif |
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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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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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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); |
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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->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); |
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->last_mbs, 0, sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); |
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init_timer(); |
init_timer(); |
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create_vlc_tables(); |
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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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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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destroy_vlc_tables(); |
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write_timer(); |
write_timer(); |
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return XVID_ERR_OK; |
return XVID_ERR_OK; |
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} |
} |
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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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const uint32_t cbp, |
const uint32_t cbp, |
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Bitstream * bs, |
Bitstream * bs, |
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const uint32_t quant, |
const uint32_t quant, |
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const uint32_t intra_dc_threshold) |
const uint32_t intra_dc_threshold, |
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const unsigned int bound) |
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{ |
{ |
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DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
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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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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, bound); |
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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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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 |
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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; |
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} |
|
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else |
DPRINTF(DPRINTF_COEFF,"block[0] %i", dc_dif); |
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{ |
} else { |
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start_coeff = 0; |
start_coeff = 0; |
266 |
} |
} |
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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 |
270 |
{ |
{ |
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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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stop_prediction_timer(); |
stop_prediction_timer(); |
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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(); |
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} |
} |
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if (pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
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{ |
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next_block = stride; |
next_block = stride; |
295 |
stride *= 2; |
stride *= 2; |
296 |
} |
} |
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// decode an inter macroblock |
// decode an inter macroblock |
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|
320 |
void decoder_mbinter(DECODER * dec, |
void |
321 |
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decoder_mbinter(DECODER * dec, |
322 |
const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
323 |
const uint32_t x_pos, |
const uint32_t x_pos, |
324 |
const uint32_t y_pos, |
const uint32_t y_pos, |
344 |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
345 |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
346 |
|
|
347 |
if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) |
if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) { |
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{ |
|
348 |
uv_dx = pMB->mvs[0].x; |
uv_dx = pMB->mvs[0].x; |
349 |
uv_dy = pMB->mvs[0].y; |
uv_dy = pMB->mvs[0].y; |
350 |
|
|
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uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
352 |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
353 |
} |
} else { |
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else |
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{ |
|
354 |
int sum; |
int sum; |
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|
356 |
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; |
357 |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dx = |
358 |
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(sum == |
359 |
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0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
360 |
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(ABS(sum) / 16) * 2)); |
361 |
|
|
362 |
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; |
363 |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dy = |
364 |
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(sum == |
365 |
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0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
366 |
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(ABS(sum) / 16) * 2)); |
367 |
} |
} |
368 |
|
|
369 |
start_timer(); |
start_timer(); |
370 |
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, |
371 |
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); |
372 |
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, |
373 |
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, |
374 |
interpolate8x8_switch(dec->cur.u, dec->refn.u, 8*x_pos, 8*y_pos, uv_dx, uv_dy, stride2, rounding); |
rounding); |
375 |
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, |
376 |
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16 * y_pos + 8, pMB->mvs[2].x, pMB->mvs[2].y, stride, |
377 |
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rounding); |
378 |
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interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16 * x_pos + 8, |
379 |
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16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
380 |
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rounding); |
381 |
|
interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8 * x_pos, 8 * y_pos, |
382 |
|
uv_dx, uv_dy, stride2, rounding); |
383 |
|
interpolate8x8_switch(dec->cur.v, dec->refn[0].v, 8 * x_pos, 8 * y_pos, |
384 |
|
uv_dx, uv_dy, stride2, rounding); |
385 |
stop_comp_timer(); |
stop_comp_timer(); |
386 |
|
|
387 |
for (i = 0; i < 6; i++) |
for (i = 0; i < 6; i++) { |
|
{ |
|
388 |
if (cbp & (1 << (5-i))) // coded |
if (cbp & (1 << (5-i))) // coded |
389 |
{ |
{ |
390 |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
memset(&block[i*64], 0, 64 * sizeof(int16_t)); // clear |
394 |
stop_coding_timer(); |
stop_coding_timer(); |
395 |
|
|
396 |
start_timer(); |
start_timer(); |
397 |
if (dec->quant_type == 0) |
if (dec->quant_type == 0) { |
|
{ |
|
398 |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
dequant_inter(&data[i*64], &block[i*64], iQuant); |
399 |
} |
} else { |
|
else |
|
|
{ |
|
400 |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
dequant4_inter(&data[i*64], &block[i*64], iQuant); |
401 |
} |
} |
402 |
stop_iquant_timer(); |
stop_iquant_timer(); |
407 |
} |
} |
408 |
} |
} |
409 |
|
|
410 |
if (pMB->field_dct) |
if (dec->interlacing && pMB->field_dct) { |
|
{ |
|
411 |
next_block = stride; |
next_block = stride; |
412 |
stride *= 2; |
stride *= 2; |
413 |
} |
} |
429 |
} |
} |
430 |
|
|
431 |
|
|
432 |
void decoder_iframe(DECODER * dec, Bitstream * bs, int quant, int intra_dc_threshold) |
void |
433 |
|
decoder_iframe(DECODER * dec, |
434 |
|
Bitstream * bs, |
435 |
|
int quant, |
436 |
|
int intra_dc_threshold) |
437 |
{ |
{ |
438 |
|
uint32_t bound; |
439 |
uint32_t x, y; |
uint32_t x, y; |
440 |
|
|
441 |
for (y = 0; y < dec->mb_height; y++) |
bound = 0; |
|
{ |
|
|
for (x = 0; x < dec->mb_width; x++) |
|
|
{ |
|
|
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
|
442 |
|
|
443 |
|
for (y = 0; y < dec->mb_height; y++) { |
444 |
|
for (x = 0; x < dec->mb_width; x++) { |
445 |
|
MACROBLOCK *mb; |
446 |
uint32_t mcbpc; |
uint32_t mcbpc; |
447 |
uint32_t cbpc; |
uint32_t cbpc; |
448 |
uint32_t acpred_flag; |
uint32_t acpred_flag; |
449 |
uint32_t cbpy; |
uint32_t cbpy; |
450 |
uint32_t cbp; |
uint32_t cbp; |
451 |
|
|
452 |
|
while (BitstreamShowBits(bs, 9) == 1) |
453 |
|
BitstreamSkip(bs, 9); |
454 |
|
|
455 |
|
if (check_resync_marker(bs, 0)) |
456 |
|
{ |
457 |
|
bound = read_video_packet_header(bs, 0, &quant); |
458 |
|
x = bound % dec->mb_width; |
459 |
|
y = bound / dec->mb_width; |
460 |
|
} |
461 |
|
mb = &dec->mbs[y * dec->mb_width + x]; |
462 |
|
|
463 |
|
DPRINTF(DPRINTF_MB, "macroblock (%i,%i) %08x", x, y, BitstreamShowBits(bs, 32)); |
464 |
|
|
465 |
mcbpc = get_mcbpc_intra(bs); |
mcbpc = get_mcbpc_intra(bs); |
466 |
mb->mode = mcbpc & 7; |
mb->mode = mcbpc & 7; |
467 |
cbpc = (mcbpc >> 4); |
cbpc = (mcbpc >> 4); |
468 |
|
|
469 |
acpred_flag = BitstreamGetBit(bs); |
acpred_flag = BitstreamGetBit(bs); |
470 |
|
|
|
if (mb->mode == MODE_STUFFING) |
|
|
{ |
|
|
DEBUG("-- STUFFING ?"); |
|
|
continue; |
|
|
} |
|
|
|
|
471 |
cbpy = get_cbpy(bs, 1); |
cbpy = get_cbpy(bs, 1); |
472 |
cbp = (cbpy << 2) | cbpc; |
cbp = (cbpy << 2) | cbpc; |
473 |
|
|
474 |
if (mb->mode == MODE_INTRA_Q) |
if (mb->mode == MODE_INTRA_Q) { |
|
{ |
|
475 |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
476 |
if (quant > 31) |
if (quant > 31) { |
|
{ |
|
477 |
quant = 31; |
quant = 31; |
478 |
} |
} else if (quant < 1) { |
|
else if (quant < 1) |
|
|
{ |
|
479 |
quant = 1; |
quant = 1; |
480 |
} |
} |
481 |
} |
} |
482 |
mb->quant = quant; |
mb->quant = quant; |
483 |
|
mb->mvs[0].x = mb->mvs[0].y = |
484 |
|
mb->mvs[1].x = mb->mvs[1].y = |
485 |
|
mb->mvs[2].x = mb->mvs[2].y = |
486 |
|
mb->mvs[3].x = mb->mvs[3].y =0; |
487 |
|
|
488 |
if (dec->interlacing) |
if (dec->interlacing) { |
|
{ |
|
489 |
mb->field_dct = BitstreamGetBit(bs); |
mb->field_dct = BitstreamGetBit(bs); |
490 |
DEBUG1("deci: field_dct: ", mb->field_dct); |
DEBUG1("deci: field_dct: ", mb->field_dct); |
491 |
} |
} |
492 |
|
|
493 |
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, |
494 |
|
intra_dc_threshold, bound); |
495 |
} |
} |
496 |
|
if(dec->out_frm) |
497 |
|
output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,0,y,dec->mb_width); |
498 |
|
|
499 |
} |
} |
500 |
|
|
501 |
} |
} |
502 |
|
|
503 |
|
|
504 |
void get_motion_vector(DECODER *dec, Bitstream *bs, int x, int y, int k, VECTOR * mv, int fcode) |
void |
505 |
|
get_motion_vector(DECODER * dec, |
506 |
|
Bitstream * bs, |
507 |
|
int x, |
508 |
|
int y, |
509 |
|
int k, |
510 |
|
VECTOR * mv, |
511 |
|
int fcode, |
512 |
|
const int bound) |
513 |
{ |
{ |
514 |
|
|
515 |
int scale_fac = 1 << (fcode - 1); |
int scale_fac = 1 << (fcode - 1); |
517 |
int low = ((-32) * scale_fac); |
int low = ((-32) * scale_fac); |
518 |
int range = (64 * scale_fac); |
int range = (64 * scale_fac); |
519 |
|
|
520 |
VECTOR pmv[4]; |
VECTOR pmv; |
|
uint32_t psad[4]; |
|
|
|
|
521 |
int mv_x, mv_y; |
int mv_x, mv_y; |
|
int pmv_x, pmv_y; |
|
|
|
|
522 |
|
|
523 |
get_pmvdata(dec->mbs, x, y, dec->mb_width, k, pmv, psad); |
pmv = get_pmv2(dec->mbs, dec->mb_width, bound, x, y, k); |
|
|
|
|
pmv_x = pmv[0].x; |
|
|
pmv_y = pmv[0].y; |
|
524 |
|
|
525 |
mv_x = get_mv(bs, fcode); |
mv_x = get_mv(bs, fcode); |
526 |
mv_y = get_mv(bs, fcode); |
mv_y = get_mv(bs, fcode); |
527 |
|
|
528 |
mv_x += pmv_x; |
DPRINTF(DPRINTF_MV,"mv_diff (%i,%i) pred (%i,%i)", mv_x, mv_y, pmv.x, pmv.y); |
|
mv_y += pmv_y; |
|
529 |
|
|
530 |
if (mv_x < low) |
mv_x += pmv.x; |
531 |
{ |
mv_y += pmv.y; |
532 |
|
|
533 |
|
if (mv_x < low) { |
534 |
mv_x += range; |
mv_x += range; |
535 |
} |
} else if (mv_x > high) { |
|
else if (mv_x > high) |
|
|
{ |
|
536 |
mv_x -= range; |
mv_x -= range; |
537 |
} |
} |
538 |
|
|
539 |
if (mv_y < low) |
if (mv_y < low) { |
|
{ |
|
540 |
mv_y += range; |
mv_y += range; |
541 |
} |
} else if (mv_y > high) { |
|
else if (mv_y > high) |
|
|
{ |
|
542 |
mv_y -= range; |
mv_y -= range; |
543 |
} |
} |
544 |
|
|
548 |
} |
} |
549 |
|
|
550 |
|
|
551 |
void decoder_pframe(DECODER * dec, Bitstream * bs, int rounding, int quant, int fcode, int intra_dc_threshold) |
void |
552 |
|
decoder_pframe(DECODER * dec, |
553 |
|
Bitstream * bs, |
554 |
|
int rounding, |
555 |
|
int quant, |
556 |
|
int fcode, |
557 |
|
int intra_dc_threshold) |
558 |
{ |
{ |
559 |
|
|
560 |
uint32_t x, y; |
uint32_t x, y; |
561 |
|
uint32_t bound; |
562 |
image_swap(&dec->cur, &dec->refn); |
int cp_mb, st_mb; |
563 |
|
|
564 |
start_timer(); |
start_timer(); |
565 |
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, |
566 |
|
dec->width, dec->height, dec->interlacing); |
567 |
stop_edges_timer(); |
stop_edges_timer(); |
568 |
|
|
569 |
for (y = 0; y < dec->mb_height; y++) |
bound = 0; |
570 |
{ |
|
571 |
for (x = 0; x < dec->mb_width; x++) |
for (y = 0; y < dec->mb_height; y++) { |
572 |
|
cp_mb = st_mb = 0; |
573 |
|
for (x = 0; x < dec->mb_width; x++) { |
574 |
|
MACROBLOCK *mb; |
575 |
|
|
576 |
|
// skip stuffing |
577 |
|
while (BitstreamShowBits(bs, 10) == 1) |
578 |
|
BitstreamSkip(bs, 10); |
579 |
|
|
580 |
|
if (check_resync_marker(bs, fcode - 1)) |
581 |
{ |
{ |
582 |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
bound = read_video_packet_header(bs, fcode - 1, &quant); |
583 |
|
x = bound % dec->mb_width; |
584 |
|
y = bound / dec->mb_width; |
585 |
|
} |
586 |
|
mb = &dec->mbs[y * dec->mb_width + x]; |
587 |
|
|
588 |
if (!BitstreamGetBit(bs)) // not_coded |
DPRINTF(DPRINTF_MB, "macroblock (%i,%i) %08x", x, y, BitstreamShowBits(bs, 32)); |
589 |
|
|
590 |
|
//if (!(dec->mb_skip[y*dec->mb_width + x]=BitstreamGetBit(bs))) // not_coded |
591 |
|
if (!(BitstreamGetBit(bs))) // not_coded |
592 |
{ |
{ |
593 |
uint32_t mcbpc; |
uint32_t mcbpc; |
594 |
uint32_t cbpc; |
uint32_t cbpc; |
597 |
uint32_t cbp; |
uint32_t cbp; |
598 |
uint32_t intra; |
uint32_t intra; |
599 |
|
|
600 |
|
cp_mb++; |
601 |
mcbpc = get_mcbpc_inter(bs); |
mcbpc = get_mcbpc_inter(bs); |
602 |
mb->mode = mcbpc & 7; |
mb->mode = mcbpc & 7; |
603 |
cbpc = (mcbpc >> 4); |
cbpc = (mcbpc >> 4); |
604 |
|
|
605 |
|
DPRINTF(DPRINTF_MB, "mode %i", mb->mode); |
606 |
|
DPRINTF(DPRINTF_MB, "cbpc %i", cbpc); |
607 |
acpred_flag = 0; |
acpred_flag = 0; |
608 |
|
|
609 |
intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); |
intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); |
610 |
|
|
611 |
if (intra) |
if (intra) { |
|
{ |
|
612 |
acpred_flag = BitstreamGetBit(bs); |
acpred_flag = BitstreamGetBit(bs); |
613 |
} |
} |
614 |
|
|
|
if (mb->mode == MODE_STUFFING) |
|
|
{ |
|
|
DEBUG("-- STUFFING ?"); |
|
|
continue; |
|
|
} |
|
|
|
|
615 |
cbpy = get_cbpy(bs, intra); |
cbpy = get_cbpy(bs, intra); |
616 |
|
DPRINTF(DPRINTF_MB, "cbpy %i", cbpy); |
617 |
|
|
618 |
cbp = (cbpy << 2) | cbpc; |
cbp = (cbpy << 2) | cbpc; |
619 |
|
|
620 |
if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) |
if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) { |
621 |
{ |
int dquant = dquant_table[BitstreamGetBits(bs, 2)]; |
622 |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
DPRINTF(DPRINTF_MB, "dquant %i", dquant); |
623 |
if (quant > 31) |
quant += dquant; |
624 |
{ |
if (quant > 31) { |
625 |
quant = 31; |
quant = 31; |
626 |
} |
} else if (quant < 1) { |
|
else if (mb->quant < 1) |
|
|
{ |
|
627 |
quant = 1; |
quant = 1; |
628 |
} |
} |
629 |
|
DPRINTF(DPRINTF_MB, "quant %i", quant); |
630 |
} |
} |
631 |
mb->quant = quant; |
mb->quant = quant; |
632 |
|
|
633 |
if (dec->interlacing) |
if (dec->interlacing) { |
|
{ |
|
634 |
mb->field_dct = BitstreamGetBit(bs); |
mb->field_dct = BitstreamGetBit(bs); |
635 |
DEBUG1("decp: field_dct: ", mb->field_dct); |
DEBUG1("decp: field_dct: ", mb->field_dct); |
636 |
|
|
637 |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
|
{ |
|
638 |
mb->field_pred = BitstreamGetBit(bs); |
mb->field_pred = BitstreamGetBit(bs); |
639 |
DEBUG1("decp: field_pred: ", mb->field_pred); |
DEBUG1("decp: field_pred: ", mb->field_pred); |
640 |
|
|
641 |
if (mb->field_pred) |
if (mb->field_pred) { |
|
{ |
|
642 |
mb->field_for_top = BitstreamGetBit(bs); |
mb->field_for_top = BitstreamGetBit(bs); |
643 |
DEBUG1("decp: field_for_top: ", mb->field_for_top); |
DEBUG1("decp: field_for_top: ", mb->field_for_top); |
644 |
mb->field_for_bot = BitstreamGetBit(bs); |
mb->field_for_bot = BitstreamGetBit(bs); |
647 |
} |
} |
648 |
} |
} |
649 |
|
|
650 |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
651 |
{ |
if (dec->interlacing && mb->field_pred) { |
652 |
if (dec->interlacing && mb->field_pred) |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
653 |
|
fcode, bound); |
654 |
|
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], |
655 |
|
fcode, bound); |
656 |
|
} else { |
657 |
|
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
658 |
|
fcode, bound); |
659 |
|
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
660 |
|
mb->mvs[0].x; |
661 |
|
mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
662 |
|
mb->mvs[0].y; |
663 |
|
} |
664 |
|
} else if (mb->mode == |
665 |
|
MODE_INTER4V /* || mb->mode == MODE_INTER4V_Q */ ) { |
666 |
|
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound); |
667 |
|
get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode, bound); |
668 |
|
get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode, bound); |
669 |
|
get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode, bound); |
670 |
|
} else // MODE_INTRA, MODE_INTRA_Q |
671 |
|
{ |
672 |
|
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
673 |
|
0; |
674 |
|
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
675 |
|
0; |
676 |
|
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
677 |
|
intra_dc_threshold, bound); |
678 |
|
continue; |
679 |
|
} |
680 |
|
|
681 |
|
decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
682 |
|
rounding); |
683 |
|
} else // not coded |
684 |
{ |
{ |
685 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
//DEBUG2("P-frame MB at (X,Y)=",x,y); |
686 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], fcode); |
mb->mode = MODE_NOT_CODED; |
687 |
|
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0; |
688 |
|
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; |
689 |
|
|
690 |
|
// copy macroblock directly from ref to cur |
691 |
|
|
692 |
|
start_timer(); |
693 |
|
|
694 |
|
transfer8x8_copy(dec->cur.y + (16 * y) * dec->edged_width + |
695 |
|
(16 * x), |
696 |
|
dec->refn[0].y + (16 * y) * dec->edged_width + |
697 |
|
(16 * x), dec->edged_width); |
698 |
|
|
699 |
|
transfer8x8_copy(dec->cur.y + (16 * y) * dec->edged_width + |
700 |
|
(16 * x + 8), |
701 |
|
dec->refn[0].y + (16 * y) * dec->edged_width + |
702 |
|
(16 * x + 8), dec->edged_width); |
703 |
|
|
704 |
|
transfer8x8_copy(dec->cur.y + (16 * y + 8) * dec->edged_width + |
705 |
|
(16 * x), |
706 |
|
dec->refn[0].y + (16 * y + |
707 |
|
8) * dec->edged_width + |
708 |
|
(16 * x), dec->edged_width); |
709 |
|
|
710 |
|
transfer8x8_copy(dec->cur.y + (16 * y + 8) * dec->edged_width + |
711 |
|
(16 * x + 8), |
712 |
|
dec->refn[0].y + (16 * y + |
713 |
|
8) * dec->edged_width + |
714 |
|
(16 * x + 8), dec->edged_width); |
715 |
|
|
716 |
|
transfer8x8_copy(dec->cur.u + (8 * y) * dec->edged_width / 2 + |
717 |
|
(8 * x), |
718 |
|
dec->refn[0].u + |
719 |
|
(8 * y) * dec->edged_width / 2 + (8 * x), |
720 |
|
dec->edged_width / 2); |
721 |
|
|
722 |
|
transfer8x8_copy(dec->cur.v + (8 * y) * dec->edged_width / 2 + |
723 |
|
(8 * x), |
724 |
|
dec->refn[0].v + |
725 |
|
(8 * y) * dec->edged_width / 2 + (8 * x), |
726 |
|
dec->edged_width / 2); |
727 |
|
stop_transfer_timer(); |
728 |
|
if(dec->out_frm && cp_mb > 0) { |
729 |
|
output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb); |
730 |
|
cp_mb = 0; |
731 |
} |
} |
732 |
else |
st_mb = x+1; |
733 |
|
} |
734 |
|
} |
735 |
|
if(dec->out_frm && cp_mb > 0) |
736 |
|
output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb); |
737 |
|
} |
738 |
|
} |
739 |
|
|
740 |
|
|
741 |
|
// add by MinChen <chenm001@163.com> |
742 |
|
// decode B-frame motion vector |
743 |
|
void |
744 |
|
get_b_motion_vector(DECODER * dec, |
745 |
|
Bitstream * bs, |
746 |
|
int x, |
747 |
|
int y, |
748 |
|
VECTOR * mv, |
749 |
|
int fcode, |
750 |
|
const VECTOR pmv) |
751 |
{ |
{ |
752 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
int scale_fac = 1 << (fcode - 1); |
753 |
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
int high = (32 * scale_fac) - 1; |
754 |
mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = mb->mvs[0].y; |
int low = ((-32) * scale_fac); |
755 |
|
int range = (64 * scale_fac); |
756 |
|
|
757 |
|
int mv_x, mv_y; |
758 |
|
int pmv_x, pmv_y; |
759 |
|
|
760 |
|
pmv_x = pmv.x; |
761 |
|
pmv_y = pmv.y; |
762 |
|
|
763 |
|
mv_x = get_mv(bs, fcode); |
764 |
|
mv_y = get_mv(bs, fcode); |
765 |
|
|
766 |
|
mv_x += pmv_x; |
767 |
|
mv_y += pmv_y; |
768 |
|
|
769 |
|
if (mv_x < low) { |
770 |
|
mv_x += range; |
771 |
|
} else if (mv_x > high) { |
772 |
|
mv_x -= range; |
773 |
|
} |
774 |
|
|
775 |
|
if (mv_y < low) { |
776 |
|
mv_y += range; |
777 |
|
} else if (mv_y > high) { |
778 |
|
mv_y -= range; |
779 |
} |
} |
780 |
|
|
781 |
|
mv->x = mv_x; |
782 |
|
mv->y = mv_y; |
783 |
} |
} |
784 |
else if (mb->mode == MODE_INTER4V /* || mb->mode == MODE_INTER4V_Q */) |
|
785 |
|
|
786 |
|
// add by MinChen <chenm001@163.com> |
787 |
|
// decode an B-frame forward & backward inter macroblock |
788 |
|
void |
789 |
|
decoder_bf_mbinter(DECODER * dec, |
790 |
|
const MACROBLOCK * pMB, |
791 |
|
const uint32_t x_pos, |
792 |
|
const uint32_t y_pos, |
793 |
|
const uint32_t cbp, |
794 |
|
Bitstream * bs, |
795 |
|
const uint32_t quant, |
796 |
|
const uint8_t ref) |
797 |
{ |
{ |
798 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
|
799 |
get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode); |
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
800 |
get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode); |
DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
801 |
get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode); |
|
802 |
|
uint32_t stride = dec->edged_width; |
803 |
|
uint32_t stride2 = stride / 2; |
804 |
|
uint32_t next_block = stride * 8; |
805 |
|
uint32_t i; |
806 |
|
uint32_t iQuant = pMB->quant; |
807 |
|
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
808 |
|
int uv_dx, uv_dy; |
809 |
|
|
810 |
|
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
811 |
|
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
812 |
|
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
813 |
|
|
814 |
|
|
815 |
|
if (!(pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
816 |
|
uv_dx = pMB->mvs[0].x; |
817 |
|
uv_dy = pMB->mvs[0].y; |
818 |
|
|
819 |
|
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
820 |
|
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
821 |
|
} else { |
822 |
|
int sum; |
823 |
|
|
824 |
|
sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
825 |
|
uv_dx = |
826 |
|
(sum == |
827 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
828 |
|
(ABS(sum) / 16) * 2)); |
829 |
|
|
830 |
|
sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
831 |
|
uv_dy = |
832 |
|
(sum == |
833 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
834 |
|
(ABS(sum) / 16) * 2)); |
835 |
} |
} |
836 |
else // MODE_INTRA, MODE_INTRA_Q |
|
837 |
|
start_timer(); |
838 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos, 16 * y_pos, |
839 |
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
840 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos + 8, |
841 |
|
16 * y_pos, pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); |
842 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos, |
843 |
|
16 * y_pos + 8, pMB->mvs[2].x, pMB->mvs[2].y, stride, |
844 |
|
0); |
845 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos + 8, |
846 |
|
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
847 |
|
0); |
848 |
|
interpolate8x8_switch(dec->cur.u, dec->refn[ref].u, 8 * x_pos, 8 * y_pos, |
849 |
|
uv_dx, uv_dy, stride2, 0); |
850 |
|
interpolate8x8_switch(dec->cur.v, dec->refn[ref].v, 8 * x_pos, 8 * y_pos, |
851 |
|
uv_dx, uv_dy, stride2, 0); |
852 |
|
stop_comp_timer(); |
853 |
|
|
854 |
|
for (i = 0; i < 6; i++) { |
855 |
|
if (cbp & (1 << (5 - i))) // coded |
856 |
{ |
{ |
857 |
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0; |
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear |
858 |
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; |
|
859 |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, intra_dc_threshold); |
start_timer(); |
860 |
continue; |
get_inter_block(bs, &block[i * 64]); |
861 |
|
stop_coding_timer(); |
862 |
|
|
863 |
|
start_timer(); |
864 |
|
if (dec->quant_type == 0) { |
865 |
|
dequant_inter(&data[i * 64], &block[i * 64], iQuant); |
866 |
|
} else { |
867 |
|
dequant4_inter(&data[i * 64], &block[i * 64], iQuant); |
868 |
|
} |
869 |
|
stop_iquant_timer(); |
870 |
|
|
871 |
|
start_timer(); |
872 |
|
idct(&data[i * 64]); |
873 |
|
stop_idct_timer(); |
874 |
|
} |
875 |
|
} |
876 |
|
|
877 |
|
if (dec->interlacing && pMB->field_dct) { |
878 |
|
next_block = stride; |
879 |
|
stride *= 2; |
880 |
} |
} |
881 |
|
|
882 |
decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, rounding); |
start_timer(); |
883 |
|
if (cbp & 32) |
884 |
|
transfer_16to8add(pY_Cur, &data[0 * 64], stride); |
885 |
|
if (cbp & 16) |
886 |
|
transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); |
887 |
|
if (cbp & 8) |
888 |
|
transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); |
889 |
|
if (cbp & 4) |
890 |
|
transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride); |
891 |
|
if (cbp & 2) |
892 |
|
transfer_16to8add(pU_Cur, &data[4 * 64], stride2); |
893 |
|
if (cbp & 1) |
894 |
|
transfer_16to8add(pV_Cur, &data[5 * 64], stride2); |
895 |
|
stop_transfer_timer(); |
896 |
} |
} |
897 |
else // not coded |
|
898 |
|
|
899 |
|
// add by MinChen <chenm001@163.com> |
900 |
|
// decode an B-frame direct & inter macroblock |
901 |
|
void |
902 |
|
decoder_bf_interpolate_mbinter(DECODER * dec, |
903 |
|
IMAGE forward, |
904 |
|
IMAGE backward, |
905 |
|
const MACROBLOCK * pMB, |
906 |
|
const uint32_t x_pos, |
907 |
|
const uint32_t y_pos, |
908 |
|
Bitstream * bs) |
909 |
{ |
{ |
910 |
|
|
911 |
mb->mode = MODE_NOT_CODED; |
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
912 |
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0; |
DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
913 |
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; |
|
914 |
|
uint32_t stride = dec->edged_width; |
915 |
|
uint32_t stride2 = stride / 2; |
916 |
|
uint32_t next_block = stride * 8; |
917 |
|
uint32_t iQuant = pMB->quant; |
918 |
|
int uv_dx, uv_dy; |
919 |
|
int b_uv_dx, b_uv_dy; |
920 |
|
uint32_t i; |
921 |
|
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
922 |
|
const uint32_t cbp = pMB->cbp; |
923 |
|
|
924 |
|
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
925 |
|
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
926 |
|
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
927 |
|
|
928 |
|
|
929 |
|
if ((pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
930 |
|
uv_dx = pMB->mvs[0].x; |
931 |
|
uv_dy = pMB->mvs[0].y; |
932 |
|
|
933 |
|
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
934 |
|
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
935 |
|
|
936 |
|
b_uv_dx = pMB->b_mvs[0].x; |
937 |
|
b_uv_dy = pMB->b_mvs[0].y; |
938 |
|
|
939 |
|
b_uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
940 |
|
b_uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
941 |
|
} else { |
942 |
|
int sum; |
943 |
|
|
944 |
|
sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
945 |
|
uv_dx = |
946 |
|
(sum == |
947 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
948 |
|
(ABS(sum) / 16) * 2)); |
949 |
|
|
950 |
|
sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
951 |
|
uv_dy = |
952 |
|
(sum == |
953 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
954 |
|
(ABS(sum) / 16) * 2)); |
955 |
|
|
956 |
|
sum = |
957 |
|
pMB->b_mvs[0].x + pMB->b_mvs[1].x + pMB->b_mvs[2].x + |
958 |
|
pMB->b_mvs[3].x; |
959 |
|
b_uv_dx = |
960 |
|
(sum == |
961 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
962 |
|
(ABS(sum) / 16) * 2)); |
963 |
|
|
964 |
|
sum = |
965 |
|
pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + |
966 |
|
pMB->b_mvs[3].y; |
967 |
|
b_uv_dy = |
968 |
|
(sum == |
969 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
970 |
|
(ABS(sum) / 16) * 2)); |
971 |
|
} |
972 |
|
|
|
// copy macroblock directly from ref to cur |
|
973 |
|
|
974 |
start_timer(); |
start_timer(); |
975 |
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos, |
976 |
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
977 |
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, 16 * y_pos, |
978 |
|
pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); |
979 |
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos + 8, |
980 |
|
pMB->mvs[2].x, pMB->mvs[2].y, stride, 0); |
981 |
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, |
982 |
|
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
983 |
|
0); |
984 |
|
interpolate8x8_switch(dec->cur.u, forward.u, 8 * x_pos, 8 * y_pos, uv_dx, |
985 |
|
uv_dy, stride2, 0); |
986 |
|
interpolate8x8_switch(dec->cur.v, forward.v, 8 * x_pos, 8 * y_pos, uv_dx, |
987 |
|
uv_dy, stride2, 0); |
988 |
|
|
989 |
|
|
990 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos, 16 * y_pos, |
991 |
|
pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0); |
992 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos + 8, |
993 |
|
16 * y_pos, pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, |
994 |
|
0); |
995 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos, |
996 |
|
16 * y_pos + 8, pMB->b_mvs[2].x, pMB->b_mvs[2].y, |
997 |
|
stride, 0); |
998 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos + 8, |
999 |
|
16 * y_pos + 8, pMB->b_mvs[3].x, pMB->b_mvs[3].y, |
1000 |
|
stride, 0); |
1001 |
|
interpolate8x8_switch(dec->refn[2].u, backward.u, 8 * x_pos, 8 * y_pos, |
1002 |
|
b_uv_dx, b_uv_dy, stride2, 0); |
1003 |
|
interpolate8x8_switch(dec->refn[2].v, backward.v, 8 * x_pos, 8 * y_pos, |
1004 |
|
b_uv_dx, b_uv_dy, stride2, 0); |
1005 |
|
|
1006 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos, 16 * y_pos, |
1007 |
|
stride); |
1008 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos + 8, 16 * y_pos, |
1009 |
|
stride); |
1010 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos, 16 * y_pos + 8, |
1011 |
|
stride); |
1012 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos + 8, |
1013 |
|
16 * y_pos + 8, stride); |
1014 |
|
interpolate8x8_c(dec->cur.u, dec->refn[2].u, 8 * x_pos, 8 * y_pos, |
1015 |
|
stride2); |
1016 |
|
interpolate8x8_c(dec->cur.v, dec->refn[2].v, 8 * x_pos, 8 * y_pos, |
1017 |
|
stride2); |
1018 |
|
stop_comp_timer(); |
1019 |
|
|
1020 |
transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x), |
for (i = 0; i < 6; i++) { |
1021 |
dec->refn.y + (16*y)*dec->edged_width + (16*x), |
if (cbp & (1 << (5 - i))) // coded |
1022 |
dec->edged_width); |
{ |
1023 |
|
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear |
|
transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x+8), |
|
|
dec->refn.y + (16*y)*dec->edged_width + (16*x+8), |
|
|
dec->edged_width); |
|
|
|
|
|
transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x), |
|
|
dec->refn.y + (16*y+8)*dec->edged_width + (16*x), |
|
|
dec->edged_width); |
|
|
|
|
|
transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x+8), |
|
|
dec->refn.y + (16*y+8)*dec->edged_width + (16*x+8), |
|
|
dec->edged_width); |
|
1024 |
|
|
1025 |
transfer8x8_copy(dec->cur.u + (8*y)*dec->edged_width/2 + (8*x), |
start_timer(); |
1026 |
dec->refn.u + (8*y)*dec->edged_width/2 + (8*x), |
get_inter_block(bs, &block[i * 64]); |
1027 |
dec->edged_width/2); |
stop_coding_timer(); |
1028 |
|
|
1029 |
transfer8x8_copy(dec->cur.v + (8*y)*dec->edged_width/2 + (8*x), |
start_timer(); |
1030 |
dec->refn.v + (8*y)*dec->edged_width/2 + (8*x), |
if (dec->quant_type == 0) { |
1031 |
dec->edged_width/2); |
dequant_inter(&data[i * 64], &block[i * 64], iQuant); |
1032 |
|
} else { |
1033 |
|
dequant4_inter(&data[i * 64], &block[i * 64], iQuant); |
1034 |
|
} |
1035 |
|
stop_iquant_timer(); |
1036 |
|
|
1037 |
|
start_timer(); |
1038 |
|
idct(&data[i * 64]); |
1039 |
|
stop_idct_timer(); |
1040 |
|
} |
1041 |
|
} |
1042 |
|
|
1043 |
|
if (dec->interlacing && pMB->field_dct) { |
1044 |
|
next_block = stride; |
1045 |
|
stride *= 2; |
1046 |
|
} |
1047 |
|
|
1048 |
|
start_timer(); |
1049 |
|
if (cbp & 32) |
1050 |
|
transfer_16to8add(pY_Cur, &data[0 * 64], stride); |
1051 |
|
if (cbp & 16) |
1052 |
|
transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); |
1053 |
|
if (cbp & 8) |
1054 |
|
transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); |
1055 |
|
if (cbp & 4) |
1056 |
|
transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride); |
1057 |
|
if (cbp & 2) |
1058 |
|
transfer_16to8add(pU_Cur, &data[4 * 64], stride2); |
1059 |
|
if (cbp & 1) |
1060 |
|
transfer_16to8add(pV_Cur, &data[5 * 64], stride2); |
1061 |
stop_transfer_timer(); |
stop_transfer_timer(); |
1062 |
} |
} |
1063 |
|
|
1064 |
|
|
1065 |
|
// add by MinChen <chenm001@163.com> |
1066 |
|
// for decode B-frame dbquant |
1067 |
|
int32_t __inline |
1068 |
|
get_dbquant(Bitstream * bs) |
1069 |
|
{ |
1070 |
|
if (!BitstreamGetBit(bs)) // '0' |
1071 |
|
return (0); |
1072 |
|
else if (!BitstreamGetBit(bs)) // '10' |
1073 |
|
return (-2); |
1074 |
|
else |
1075 |
|
return (2); // '11' |
1076 |
} |
} |
1077 |
|
|
1078 |
|
// add by MinChen <chenm001@163.com> |
1079 |
|
// for decode B-frame mb_type |
1080 |
|
// bit ret_value |
1081 |
|
// 1 0 |
1082 |
|
// 01 1 |
1083 |
|
// 001 2 |
1084 |
|
// 0001 3 |
1085 |
|
int32_t __inline |
1086 |
|
get_mbtype(Bitstream * bs) |
1087 |
|
{ |
1088 |
|
int32_t mb_type; |
1089 |
|
|
1090 |
|
for (mb_type = 0; mb_type <= 3; mb_type++) { |
1091 |
|
if (BitstreamGetBit(bs)) |
1092 |
|
break; |
1093 |
} |
} |
1094 |
|
|
1095 |
|
if (mb_type <= 3) |
1096 |
|
return (mb_type); |
1097 |
|
else |
1098 |
|
return (-1); |
1099 |
} |
} |
1100 |
|
|
1101 |
int decoder_decode(DECODER * dec, XVID_DEC_FRAME * frame) |
void |
1102 |
|
decoder_bframe(DECODER * dec, |
1103 |
|
Bitstream * bs, |
1104 |
|
int quant, |
1105 |
|
int fcode_forward, |
1106 |
|
int fcode_backward) |
1107 |
|
{ |
1108 |
|
uint32_t x, y; |
1109 |
|
VECTOR mv; |
1110 |
|
const VECTOR zeromv = {0,0}; |
1111 |
|
#ifdef BFRAMES_DEC_DEBUG |
1112 |
|
FILE *fp; |
1113 |
|
static char first=0; |
1114 |
|
#define BFRAME_DEBUG if (!first && fp){ \ |
1115 |
|
fprintf(fp,"Y=%3d X=%3d MB=%2d CBP=%02X\n",y,x,mb->mb_type,mb->cbp); \ |
1116 |
|
} |
1117 |
|
#endif |
1118 |
|
|
1119 |
|
start_timer(); |
1120 |
|
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
1121 |
|
dec->width, dec->height, dec->interlacing); |
1122 |
|
image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height, |
1123 |
|
dec->width, dec->height, dec->interlacing); |
1124 |
|
stop_edges_timer(); |
1125 |
|
|
1126 |
|
#ifdef BFRAMES_DEC_DEBUG |
1127 |
|
if (!first){ |
1128 |
|
fp=fopen("C:\\XVIDDBG.TXT","w"); |
1129 |
|
} |
1130 |
|
#endif |
1131 |
|
|
1132 |
|
for (y = 0; y < dec->mb_height; y++) { |
1133 |
|
// Initialize Pred Motion Vector |
1134 |
|
dec->p_fmv = dec->p_bmv = zeromv; |
1135 |
|
for (x = 0; x < dec->mb_width; x++) { |
1136 |
|
MACROBLOCK *mb = &dec->mbs[y * dec->mb_width + x]; |
1137 |
|
MACROBLOCK *last_mb = &dec->last_mbs[y * dec->mb_width + x]; |
1138 |
|
|
1139 |
|
mv = |
1140 |
|
mb->b_mvs[0] = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] = |
1141 |
|
mb->mvs[0] = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = zeromv; |
1142 |
|
|
1143 |
|
// the last P_VOP is skip macroblock ? |
1144 |
|
if (last_mb->mode == MODE_NOT_CODED) { |
1145 |
|
//DEBUG2("Skip MB in B-frame at (X,Y)=!",x,y); |
1146 |
|
mb->cbp = 0; |
1147 |
|
#ifdef BFRAMES_DEC_DEBUG |
1148 |
|
mb->mb_type = MODE_NOT_CODED; |
1149 |
|
BFRAME_DEBUG |
1150 |
|
#endif |
1151 |
|
mb->mb_type = MODE_FORWARD; |
1152 |
|
mb->quant = last_mb->quant; |
1153 |
|
//mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
1154 |
|
//mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = mb->mvs[0].y; |
1155 |
|
|
1156 |
|
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, mb->quant, 1); |
1157 |
|
continue; |
1158 |
|
} |
1159 |
|
|
1160 |
|
if (!BitstreamGetBit(bs)) { // modb=='0' |
1161 |
|
const uint8_t modb2 = BitstreamGetBit(bs); |
1162 |
|
|
1163 |
|
mb->mb_type = get_mbtype(bs); |
1164 |
|
|
1165 |
|
if (!modb2) { // modb=='00' |
1166 |
|
mb->cbp = BitstreamGetBits(bs, 6); |
1167 |
|
} else { |
1168 |
|
mb->cbp = 0; |
1169 |
|
} |
1170 |
|
if (mb->mb_type && mb->cbp) { |
1171 |
|
quant += get_dbquant(bs); |
1172 |
|
|
1173 |
|
if (quant > 31) { |
1174 |
|
quant = 31; |
1175 |
|
} else if (quant < 1) { |
1176 |
|
quant = 1; |
1177 |
|
} |
1178 |
|
} |
1179 |
|
} else { |
1180 |
|
mb->mb_type = MODE_DIRECT_NONE_MV; |
1181 |
|
mb->cbp = 0; |
1182 |
|
} |
1183 |
|
|
1184 |
|
mb->quant = quant; |
1185 |
|
mb->mode = MODE_INTER4V; |
1186 |
|
//DEBUG1("Switch bm_type=",mb->mb_type); |
1187 |
|
|
1188 |
|
#ifdef BFRAMES_DEC_DEBUG |
1189 |
|
BFRAME_DEBUG |
1190 |
|
#endif |
1191 |
|
switch (mb->mb_type) { |
1192 |
|
case MODE_DIRECT: |
1193 |
|
get_b_motion_vector(dec, bs, x, y, &mv, 1, zeromv); |
1194 |
|
|
1195 |
|
case MODE_DIRECT_NONE_MV: |
1196 |
|
{ // Because this file is a C file not C++ so I use '{' to define var |
1197 |
|
const int64_t TRB = dec->time_pp - dec->time_bp, TRD = dec->time_pp; |
1198 |
|
int i; |
1199 |
|
|
1200 |
|
for (i = 0; i < 4; i++) { |
1201 |
|
mb->mvs[i].x = (int32_t) ((TRB * last_mb->mvs[i].x) |
1202 |
|
/ TRD + mv.x); |
1203 |
|
mb->b_mvs[i].x = (int32_t) ((mv.x == 0) |
1204 |
|
? ((TRB - TRD) * last_mb->mvs[i].x) |
1205 |
|
/ TRD |
1206 |
|
: mb->mvs[i].x - last_mb->mvs[i].x); |
1207 |
|
mb->mvs[i].y = (int32_t) ((TRB * last_mb->mvs[i].y) |
1208 |
|
/ TRD + mv.y); |
1209 |
|
mb->b_mvs[i].y = (int32_t) ((mv.y == 0) |
1210 |
|
? ((TRB - TRD) * last_mb->mvs[i].y) |
1211 |
|
/ TRD |
1212 |
|
: mb->mvs[i].y - last_mb->mvs[i].y); |
1213 |
|
} |
1214 |
|
//DEBUG("B-frame Direct!\n"); |
1215 |
|
} |
1216 |
|
decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], |
1217 |
|
mb, x, y, bs); |
1218 |
|
break; |
1219 |
|
|
1220 |
|
case MODE_INTERPOLATE: |
1221 |
|
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, |
1222 |
|
dec->p_fmv); |
1223 |
|
dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
1224 |
|
|
1225 |
|
get_b_motion_vector(dec, bs, x, y, &mb->b_mvs[0], |
1226 |
|
fcode_backward, dec->p_bmv); |
1227 |
|
dec->p_bmv = mb->b_mvs[1] = mb->b_mvs[2] = |
1228 |
|
mb->b_mvs[3] = mb->b_mvs[0]; |
1229 |
|
|
1230 |
|
decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], |
1231 |
|
mb, x, y, bs); |
1232 |
|
//DEBUG("B-frame Bidir!\n"); |
1233 |
|
break; |
1234 |
|
|
1235 |
|
case MODE_BACKWARD: |
1236 |
|
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_backward, |
1237 |
|
dec->p_bmv); |
1238 |
|
dec->p_bmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
1239 |
|
|
1240 |
|
mb->mode = MODE_INTER; |
1241 |
|
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 0); |
1242 |
|
//DEBUG("B-frame Backward!\n"); |
1243 |
|
break; |
1244 |
|
|
1245 |
|
case MODE_FORWARD: |
1246 |
|
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, |
1247 |
|
dec->p_fmv); |
1248 |
|
dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
1249 |
|
|
1250 |
|
mb->mode = MODE_INTER; |
1251 |
|
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
1252 |
|
//DEBUG("B-frame Forward!\n"); |
1253 |
|
break; |
1254 |
|
|
1255 |
|
default: |
1256 |
|
//DEBUG1("Not support B-frame mb_type =", mb->mb_type); |
1257 |
|
; |
1258 |
|
} |
1259 |
|
|
1260 |
|
} // end of FOR |
1261 |
|
} |
1262 |
|
#ifdef BFRAMES_DEC_DEBUG |
1263 |
|
if (!first){ |
1264 |
|
first=1; |
1265 |
|
if (fp) |
1266 |
|
fclose(fp); |
1267 |
|
} |
1268 |
|
#endif |
1269 |
|
} |
1270 |
|
|
1271 |
|
// swap two MACROBLOCK array |
1272 |
|
void |
1273 |
|
mb_swap(MACROBLOCK ** mb1, |
1274 |
|
MACROBLOCK ** mb2) |
1275 |
|
{ |
1276 |
|
MACROBLOCK *temp = *mb1; |
1277 |
|
|
1278 |
|
*mb1 = *mb2; |
1279 |
|
*mb2 = temp; |
1280 |
|
} |
1281 |
|
|
1282 |
|
int |
1283 |
|
decoder_decode(DECODER * dec, |
1284 |
|
XVID_DEC_FRAME * frame) |
1285 |
{ |
{ |
1286 |
|
|
1287 |
Bitstream bs; |
Bitstream bs; |
1288 |
uint32_t rounding; |
uint32_t rounding; |
1289 |
uint32_t quant; |
uint32_t quant; |
1290 |
uint32_t fcode; |
uint32_t fcode_forward; |
1291 |
|
uint32_t fcode_backward; |
1292 |
uint32_t intra_dc_threshold; |
uint32_t intra_dc_threshold; |
1293 |
|
uint32_t vop_type; |
1294 |
|
|
1295 |
start_global_timer(); |
start_global_timer(); |
1296 |
|
|
1297 |
|
dec->out_frm = (frame->colorspace == XVID_CSP_EXTERN) ? frame->image : NULL; |
1298 |
|
|
1299 |
BitstreamInit(&bs, frame->bitstream, frame->length); |
BitstreamInit(&bs, frame->bitstream, frame->length); |
1300 |
|
|
1301 |
switch (BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode, &intra_dc_threshold)) |
// add by chenm001 <chenm001@163.com> |
1302 |
{ |
// for support B-frame to reference last 2 frame |
1303 |
|
dec->frames++; |
1304 |
|
vop_type = |
1305 |
|
BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode_forward, |
1306 |
|
&fcode_backward, &intra_dc_threshold); |
1307 |
|
|
1308 |
|
dec->p_bmv.x = dec->p_bmv.y = dec->p_fmv.y = dec->p_fmv.y = 0; // init pred vector to 0 |
1309 |
|
|
1310 |
|
switch (vop_type) { |
1311 |
case P_VOP : |
case P_VOP : |
1312 |
decoder_pframe(dec, &bs, rounding, quant, fcode, intra_dc_threshold); |
decoder_pframe(dec, &bs, rounding, quant, fcode_forward, |
1313 |
|
intra_dc_threshold); |
1314 |
|
#ifdef BFRAMES_DEC |
1315 |
|
DEBUG1("P_VOP Time=", dec->time); |
1316 |
|
#endif |
1317 |
break; |
break; |
1318 |
|
|
1319 |
case I_VOP : |
case I_VOP : |
|
//DEBUG1("",intra_dc_threshold); |
|
1320 |
decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
1321 |
|
#ifdef BFRAMES_DEC |
1322 |
|
DEBUG1("I_VOP Time=", dec->time); |
1323 |
|
#endif |
1324 |
break; |
break; |
1325 |
|
|
1326 |
case B_VOP : // ignore |
case B_VOP: |
1327 |
|
#ifdef BFRAMES_DEC |
1328 |
|
if (dec->time_pp > dec->time_bp) { |
1329 |
|
DEBUG1("B_VOP Time=", dec->time); |
1330 |
|
decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward); |
1331 |
|
} else { |
1332 |
|
DEBUG("broken B-frame!"); |
1333 |
|
} |
1334 |
|
#else |
1335 |
|
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
1336 |
|
#endif |
1337 |
break; |
break; |
1338 |
|
|
1339 |
case N_VOP : // vop not coded |
case N_VOP : // vop not coded |
1340 |
|
// when low_delay==0, N_VOP's should interpolate between the past and future frames |
1341 |
|
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
1342 |
break; |
break; |
1343 |
|
|
1344 |
default : |
default : |
1345 |
return XVID_ERR_FAIL; |
return XVID_ERR_FAIL; |
1346 |
} |
} |
1347 |
|
|
1348 |
|
#ifdef BFRAMES_DEC_DEBUG |
1349 |
|
if (frame->length != BitstreamPos(&bs) / 8){ |
1350 |
|
DEBUG2("InLen/UseLen",frame->length, BitstreamPos(&bs) / 8); |
1351 |
|
} |
1352 |
|
#endif |
1353 |
frame->length = BitstreamPos(&bs) / 8; |
frame->length = BitstreamPos(&bs) / 8; |
1354 |
|
|
1355 |
start_timer(); |
|
1356 |
|
#ifdef BFRAMES_DEC |
1357 |
|
// test if no B_VOP |
1358 |
|
if (dec->low_delay) { |
1359 |
|
#endif |
1360 |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
1361 |
frame->image, frame->stride, frame->colorspace); |
frame->image, frame->stride, frame->colorspace); |
1362 |
|
|
1363 |
|
#ifdef BFRAMES_DEC |
1364 |
|
} else { |
1365 |
|
if (dec->frames >= 0) { |
1366 |
|
start_timer(); |
1367 |
|
if ((vop_type == I_VOP || vop_type == P_VOP)) { |
1368 |
|
image_output(&dec->refn[0], dec->width, dec->height, |
1369 |
|
dec->edged_width, frame->image, frame->stride, |
1370 |
|
frame->colorspace); |
1371 |
|
} else if (vop_type == B_VOP) { |
1372 |
|
image_output(&dec->cur, dec->width, dec->height, |
1373 |
|
dec->edged_width, frame->image, frame->stride, |
1374 |
|
frame->colorspace); |
1375 |
|
} |
1376 |
stop_conv_timer(); |
stop_conv_timer(); |
1377 |
|
} |
1378 |
|
} |
1379 |
|
#endif |
1380 |
|
|
1381 |
|
if (vop_type == I_VOP || vop_type == P_VOP) { |
1382 |
|
image_swap(&dec->refn[0], &dec->refn[1]); |
1383 |
|
image_swap(&dec->cur, &dec->refn[0]); |
1384 |
|
|
1385 |
|
// swap MACROBLOCK |
1386 |
|
// the Divx will not set the low_delay flage some times |
1387 |
|
// so follow code will wrong to not swap at that time |
1388 |
|
// this will broken bitstream! so I'm change it, |
1389 |
|
// But that is not the best way! can anyone tell me how |
1390 |
|
// to do another way? |
1391 |
|
// 18-07-2002 MinChen<chenm001@163.com> |
1392 |
|
//if (!dec->low_delay && vop_type == P_VOP) |
1393 |
|
if (vop_type == P_VOP) |
1394 |
|
mb_swap(&dec->mbs, &dec->last_mbs); |
1395 |
|
} |
1396 |
|
|
1397 |
emms(); |
emms(); |
1398 |
|
|
1399 |
stop_global_timer(); |
stop_global_timer(); |
1400 |
|
|
1401 |
return XVID_ERR_OK; |
return XVID_ERR_OK; |
|
|
|
1402 |
} |
} |