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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 |
* Copyright(C) 2002 MinChen <chenm001@163.com> |
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* Video tools as specified in ISO/IEC 14496-2 standard. Those intending |
* 2002 Peter Ross <pross@xvid.org> |
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* to use this software module in hardware or software products are |
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* advised that its use may infringe existing patents or copyrights, and |
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* any such use would be at such party's own risk. The original |
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* developer of this software module and his/her company, and subsequent |
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* editors and their companies, will have no liability for use of this |
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* software or modifications or derivatives thereof. |
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* |
* |
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* This program is free software; you can redistribute it and/or modify |
* This file is part of XviD, a free MPEG-4 video encoder/decoder |
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* it under the terms of the GNU General Public License as published by |
* |
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* XviD is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
* (at your option) any later version. |
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* |
* |
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* |
* |
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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 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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*************************************************************************/ |
* Under section 8 of the GNU General Public License, the copyright |
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* holders of XVID explicitly forbid distribution in the following |
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/************************************************************************** |
* countries: |
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* |
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* - Japan |
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* - United States of America |
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* |
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* Linking XviD statically or dynamically with other modules is making a |
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* combined work based on XviD. Thus, the terms and conditions of the |
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* GNU General Public License cover the whole combination. |
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* |
* |
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* History: |
* As a special exception, the copyright holders of XviD give you |
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* permission to link XviD with independent modules that communicate with |
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* XviD solely through the VFW1.1 and DShow interfaces, regardless of the |
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* license terms of these independent modules, and to copy and distribute |
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* the resulting combined work under terms of your choice, provided that |
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* every copy of the combined work is accompanied by a complete copy of |
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* the source code of XviD (the version of XviD used to produce the |
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* combined work), being distributed under the terms of the GNU General |
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* Public License plus this exception. An independent module is a module |
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* which is not derived from or based on XviD. |
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* |
* |
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* 26.12.2001 decoder_mbinter: dequant/idct moved within if(coded) block |
* Note that people who make modified versions of XviD are not obligated |
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* 22.12.2001 block based interpolation |
* to grant this special exception for their modified versions; it is |
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* 01.12.2001 inital version; (c)2001 peter ross <pross@cs.rmit.edu.au> |
* their choice whether to do so. The GNU General Public License gives |
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* permission to release a modified version without this exception; this |
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* exception also makes it possible to release a modified version which |
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* carries forward this exception. |
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* |
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* $Id: decoder.c,v 1.43 2002-11-16 23:38:15 edgomez 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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#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/image.h" |
#include "image/image.h" |
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#include "image/colorspace.h" |
#include "image/colorspace.h" |
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#include "utils/mem_align.h" |
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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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dec = malloc(sizeof(DECODER)); |
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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{ |
xvid_free(dec); |
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free(dec); |
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return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
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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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{ |
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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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free(dec); |
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); |
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image_destroy(&dec->refn[0], dec->edged_width, dec->edged_height); |
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image_destroy(&dec->refn[1], dec->edged_width, dec->edged_height); |
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xvid_free(dec); |
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return XVID_ERR_MEMORY; |
return XVID_ERR_MEMORY; |
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} |
} |
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dec->mbs = malloc(sizeof(MACROBLOCK) * dec->mb_width * dec->mb_height); |
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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free(dec); |
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; |
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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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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free(dec->mbs); |
xvid_free(dec->last_mbs); |
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image_destroy(&dec->refn, dec->edged_width, dec->edged_height); |
xvid_free(dec->mbs); |
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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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image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
image_destroy(&dec->cur, dec->edged_width, dec->edged_height); |
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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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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, MACROBLOCK * mb, int x, int y, uint32_t acpred_flag, uint32_t cbp, Bitstream * bs, int quant, int intra_dc_threshold) |
void |
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{ |
decoder_mbintra(DECODER * dec, |
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uint32_t k; |
MACROBLOCK * pMB, |
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const uint32_t x_pos, |
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const uint32_t y_pos, |
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const uint32_t acpred_flag, |
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const uint32_t cbp, |
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Bitstream * bs, |
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const uint32_t quant, |
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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); |
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DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
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uint32_t stride = dec->edged_width; |
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uint32_t stride2 = stride / 2; |
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uint32_t next_block = stride * 8; |
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uint32_t i; |
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uint32_t iQuant = pMB->quant; |
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uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
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pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
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pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
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pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
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for (k = 0; k < 6; k++) |
memset(block, 0, 6 * 64 * sizeof(int16_t)); // clear |
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{ |
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uint32_t dcscalar; |
for (i = 0; i < 6; i++) { |
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int16_t block[64]; |
uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); |
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int16_t data[64]; |
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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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dcscalar = get_dc_scaler(mb->quant, k < 4); |
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start_timer(); |
start_timer(); |
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predict_acdc(dec->mbs, x, y, dec->mb_width, k, block, mb->quant, dcscalar, 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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mb->acpred_directions[k] = 0; |
pMB->acpred_directions[i] = 0; |
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} |
} |
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stop_prediction_timer(); |
stop_prediction_timer(); |
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memset(block, 0, 64*sizeof(int16_t)); // clear |
if (quant < intra_dc_threshold) { |
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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 = k < 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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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[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; |
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} |
} |
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start_timer(); |
start_timer(); |
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if (cbp & (1 << (5-k))) // coded |
if (cbp & (1 << (5 - i))) // coded |
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{ |
{ |
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get_intra_block(bs, block, mb->acpred_directions[k], 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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start_timer(); |
start_timer(); |
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add_acdc(mb, k, block, dcscalar, predictors); |
add_acdc(pMB, i, &block[i * 64], iDcScaler, predictors); |
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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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{ |
dequant_intra(&data[i * 64], &block[i * 64], iQuant, iDcScaler); |
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dequant_intra(data, block, mb->quant, dcscalar); |
} else { |
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} |
dequant4_intra(&data[i * 64], &block[i * 64], iQuant, iDcScaler); |
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else |
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{ |
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dequant4_intra(data, block, mb->quant, dcscalar); |
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} |
} |
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stop_iquant_timer(); |
stop_iquant_timer(); |
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start_timer(); |
start_timer(); |
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idct(data); |
idct(&data[i * 64]); |
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stop_idct_timer(); |
stop_idct_timer(); |
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start_timer(); |
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if (k < 4) |
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{ |
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transfer_16to8copy(dec->cur.y + (16*y*dec->edged_width) + 16*x + (4*(k&2)*dec->edged_width) + 8*(k&1), data, dec->edged_width); |
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} |
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else if (k == 4) |
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{ |
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transfer_16to8copy(dec->cur.u+ 8*y*(dec->edged_width/2) + 8*x, data, (dec->edged_width/2)); |
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} |
} |
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else // if (k == 5) |
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{ |
if (dec->interlacing && pMB->field_dct) { |
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transfer_16to8copy(dec->cur.v + 8*y*(dec->edged_width/2) + 8*x, data, (dec->edged_width/2)); |
next_block = stride; |
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stride *= 2; |
292 |
} |
} |
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start_timer(); |
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transfer_16to8copy(pY_Cur, &data[0 * 64], stride); |
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transfer_16to8copy(pY_Cur + 8, &data[1 * 64], stride); |
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transfer_16to8copy(pY_Cur + next_block, &data[2 * 64], stride); |
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transfer_16to8copy(pY_Cur + 8 + next_block, &data[3 * 64], stride); |
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transfer_16to8copy(pU_Cur, &data[4 * 64], stride2); |
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transfer_16to8copy(pV_Cur, &data[5 * 64], stride2); |
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stop_transfer_timer(); |
stop_transfer_timer(); |
302 |
} |
} |
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} |
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// decode an inter macroblock |
// decode an inter macroblock |
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void decoder_mbinter(DECODER * dec, MACROBLOCK * mb, int x, int y, uint32_t acpred_flag, uint32_t cbp, Bitstream * bs, int quant, int rounding) |
void |
317 |
{ |
decoder_mbinter(DECODER * dec, |
318 |
const uint32_t stride = dec->edged_width; |
const MACROBLOCK * pMB, |
319 |
const uint32_t stride2 = dec->edged_width / 2; |
const uint32_t x_pos, |
320 |
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const uint32_t y_pos, |
321 |
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const uint32_t acpred_flag, |
322 |
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const uint32_t cbp, |
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Bitstream * bs, |
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const uint32_t quant, |
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const uint32_t rounding) |
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{ |
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328 |
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DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
329 |
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DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
330 |
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331 |
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uint32_t stride = dec->edged_width; |
332 |
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uint32_t stride2 = stride / 2; |
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uint32_t next_block = stride * 8; |
334 |
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uint32_t i; |
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uint32_t iQuant = pMB->quant; |
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uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
337 |
int uv_dx, uv_dy; |
int uv_dx, uv_dy; |
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uint32_t k; |
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338 |
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if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) |
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
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pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
341 |
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pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
342 |
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343 |
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if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) { |
344 |
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uv_dx = pMB->mvs[0].x; |
345 |
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uv_dy = pMB->mvs[0].y; |
346 |
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347 |
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if (dec->quarterpel) |
348 |
{ |
{ |
349 |
uv_dx = mb->mvs[0].x; |
uv_dx = (uv_dx >> 1) | (uv_dx & 1); |
350 |
uv_dy = mb->mvs[0].y; |
uv_dy = (uv_dy >> 1) | (uv_dy & 1); |
351 |
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} |
352 |
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|
353 |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
354 |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
355 |
} |
} else { |
|
else |
|
|
{ |
|
356 |
int sum; |
int sum; |
357 |
sum = mb->mvs[0].x + mb->mvs[1].x + mb->mvs[2].x + mb->mvs[3].x; |
sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
358 |
|
|
359 |
|
if (dec->quarterpel) |
360 |
|
{ |
361 |
|
sum /= 2; |
362 |
|
} |
363 |
|
|
364 |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dx = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
365 |
|
|
366 |
sum = mb->mvs[0].y + mb->mvs[1].y + mb->mvs[2].y + mb->mvs[3].y; |
sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
367 |
|
|
368 |
|
if (dec->quarterpel) |
369 |
|
{ |
370 |
|
sum /= 2; |
371 |
|
} |
372 |
|
|
373 |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
uv_dy = (sum == 0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + (ABS(sum) / 16) * 2) ); |
374 |
} |
} |
375 |
|
|
376 |
start_timer(); |
start_timer(); |
377 |
interpolate8x8_switch(dec->cur.y, dec->refn.y, 16*x, 16*y , mb->mvs[0].x, mb->mvs[0].y, stride, rounding); |
if(dec->quarterpel) { |
378 |
interpolate8x8_switch(dec->cur.y, dec->refn.y, 16*x + 8, 16*y , mb->mvs[1].x, mb->mvs[1].y, stride, rounding); |
DPRINTF(DPRINTF_DEBUG, "QUARTERPEL\n"); |
379 |
interpolate8x8_switch(dec->cur.y, dec->refn.y, 16*x, 16*y + 8, mb->mvs[2].x, mb->mvs[2].y, stride, rounding); |
interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos, |
380 |
interpolate8x8_switch(dec->cur.y, dec->refn.y, 16*x + 8, 16*y + 8, mb->mvs[3].x, mb->mvs[3].y, stride, rounding); |
pMB->mvs[0].x, pMB->mvs[0].y, stride, rounding); |
381 |
interpolate8x8_switch(dec->cur.u, dec->refn.u, 8*x, 8*y, uv_dx, uv_dy, stride2, rounding); |
interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos, |
382 |
interpolate8x8_switch(dec->cur.v, dec->refn.v, 8*x, 8*y, uv_dx, uv_dy, stride2, rounding); |
pMB->mvs[1].x, pMB->mvs[1].y, stride, rounding); |
383 |
|
interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos + 8, |
384 |
|
pMB->mvs[2].x, pMB->mvs[2].y, stride, rounding); |
385 |
|
interpolate8x8_quarterpel(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos + 8, |
386 |
|
pMB->mvs[3].x, pMB->mvs[3].y, stride, rounding); |
387 |
|
} |
388 |
|
else { |
389 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos, |
390 |
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, rounding); |
391 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos, |
392 |
|
pMB->mvs[1].x, pMB->mvs[1].y, stride, rounding); |
393 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos, 16*y_pos + 8, |
394 |
|
pMB->mvs[2].x, pMB->mvs[2].y, stride, rounding); |
395 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[0].y, 16*x_pos + 8, 16*y_pos + 8, |
396 |
|
pMB->mvs[3].x, pMB->mvs[3].y, stride, rounding); |
397 |
|
} |
398 |
|
|
399 |
|
interpolate8x8_switch(dec->cur.u, dec->refn[0].u, 8 * x_pos, 8 * y_pos, |
400 |
|
uv_dx, uv_dy, stride2, rounding); |
401 |
|
interpolate8x8_switch(dec->cur.v, dec->refn[0].v, 8 * x_pos, 8 * y_pos, |
402 |
|
uv_dx, uv_dy, stride2, rounding); |
403 |
stop_comp_timer(); |
stop_comp_timer(); |
404 |
|
|
405 |
|
for (i = 0; i < 6; i++) { |
406 |
for (k = 0; k < 6; k++) |
if (cbp & (1 << (5 - i))) // coded |
|
{ |
|
|
int16_t block[64]; |
|
|
int16_t data[64]; |
|
|
|
|
|
if (cbp & (1 << (5-k))) // coded |
|
407 |
{ |
{ |
408 |
memset(block, 0, 64 * sizeof(int16_t)); // clear |
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear |
409 |
|
|
410 |
start_timer(); |
start_timer(); |
411 |
get_inter_block(bs, block); |
get_inter_block(bs, &block[i * 64]); |
412 |
stop_coding_timer(); |
stop_coding_timer(); |
413 |
|
|
414 |
start_timer(); |
start_timer(); |
415 |
if (dec->quant_type == 0) |
if (dec->quant_type == 0) { |
416 |
{ |
dequant_inter(&data[i * 64], &block[i * 64], iQuant); |
417 |
dequant_inter(data, block, mb->quant); |
} else { |
418 |
} |
dequant4_inter(&data[i * 64], &block[i * 64], iQuant); |
|
else |
|
|
{ |
|
|
dequant4_inter(data, block, mb->quant); |
|
419 |
} |
} |
420 |
stop_iquant_timer(); |
stop_iquant_timer(); |
421 |
|
|
422 |
start_timer(); |
start_timer(); |
423 |
idct(data); |
idct(&data[i * 64]); |
424 |
stop_idct_timer(); |
stop_idct_timer(); |
|
|
|
|
start_timer(); |
|
|
if (k < 4) |
|
|
{ |
|
|
transfer_16to8add(dec->cur.y + (16*y + 4*(k&2))*stride + 16*x + 8*(k&1), data, stride); |
|
425 |
} |
} |
|
else if (k == 4) |
|
|
{ |
|
|
transfer_16to8add(dec->cur.u + 8*y*stride2 + 8*x, data, stride2); |
|
426 |
} |
} |
427 |
else // k == 5 |
|
428 |
{ |
if (dec->interlacing && pMB->field_dct) { |
429 |
transfer_16to8add(dec->cur.v + 8*y*stride2 + 8*x, data, stride2); |
next_block = stride; |
430 |
|
stride *= 2; |
431 |
} |
} |
432 |
|
|
433 |
|
start_timer(); |
434 |
|
if (cbp & 32) |
435 |
|
transfer_16to8add(pY_Cur, &data[0 * 64], stride); |
436 |
|
if (cbp & 16) |
437 |
|
transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); |
438 |
|
if (cbp & 8) |
439 |
|
transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); |
440 |
|
if (cbp & 4) |
441 |
|
transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride); |
442 |
|
if (cbp & 2) |
443 |
|
transfer_16to8add(pU_Cur, &data[4 * 64], stride2); |
444 |
|
if (cbp & 1) |
445 |
|
transfer_16to8add(pV_Cur, &data[5 * 64], stride2); |
446 |
stop_transfer_timer(); |
stop_transfer_timer(); |
447 |
} |
} |
|
} |
|
|
} |
|
|
|
|
448 |
|
|
449 |
|
|
450 |
void decoder_iframe(DECODER * dec, Bitstream * bs, int quant, int intra_dc_threshold) |
void |
451 |
|
decoder_iframe(DECODER * dec, |
452 |
|
Bitstream * bs, |
453 |
|
int quant, |
454 |
|
int intra_dc_threshold) |
455 |
{ |
{ |
456 |
|
uint32_t bound; |
457 |
uint32_t x, y; |
uint32_t x, y; |
458 |
|
|
459 |
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]; |
|
460 |
|
|
461 |
|
for (y = 0; y < dec->mb_height; y++) { |
462 |
|
for (x = 0; x < dec->mb_width; x++) { |
463 |
|
MACROBLOCK *mb; |
464 |
uint32_t mcbpc; |
uint32_t mcbpc; |
465 |
uint32_t cbpc; |
uint32_t cbpc; |
466 |
uint32_t acpred_flag; |
uint32_t acpred_flag; |
467 |
uint32_t cbpy; |
uint32_t cbpy; |
468 |
uint32_t cbp; |
uint32_t cbp; |
469 |
|
|
470 |
|
while (BitstreamShowBits(bs, 9) == 1) |
471 |
|
BitstreamSkip(bs, 9); |
472 |
|
|
473 |
|
if (check_resync_marker(bs, 0)) |
474 |
|
{ |
475 |
|
bound = read_video_packet_header(bs, 0, &quant); |
476 |
|
x = bound % dec->mb_width; |
477 |
|
y = bound / dec->mb_width; |
478 |
|
} |
479 |
|
mb = &dec->mbs[y * dec->mb_width + x]; |
480 |
|
|
481 |
|
DPRINTF(DPRINTF_MB, "macroblock (%i,%i) %08x", x, y, BitstreamShowBits(bs, 32)); |
482 |
|
|
483 |
mcbpc = get_mcbpc_intra(bs); |
mcbpc = get_mcbpc_intra(bs); |
484 |
mb->mode = mcbpc & 7; |
mb->mode = mcbpc & 7; |
485 |
cbpc = (mcbpc >> 4); |
cbpc = (mcbpc >> 4); |
486 |
|
|
487 |
acpred_flag = BitstreamGetBit(bs); |
acpred_flag = BitstreamGetBit(bs); |
488 |
|
|
|
if (mb->mode == MODE_STUFFING) |
|
|
{ |
|
|
DEBUG("-- STUFFING ?"); |
|
|
continue; |
|
|
} |
|
|
|
|
489 |
cbpy = get_cbpy(bs, 1); |
cbpy = get_cbpy(bs, 1); |
490 |
cbp = (cbpy << 2) | cbpc; |
cbp = (cbpy << 2) | cbpc; |
491 |
|
|
492 |
if (mb->mode == MODE_INTRA_Q) |
if (mb->mode == MODE_INTRA_Q) { |
|
{ |
|
493 |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
494 |
if (quant > 31) |
if (quant > 31) { |
|
{ |
|
495 |
quant = 31; |
quant = 31; |
496 |
} |
} else if (quant < 1) { |
|
else if (quant < 1) |
|
|
{ |
|
497 |
quant = 1; |
quant = 1; |
498 |
} |
} |
499 |
} |
} |
500 |
mb->quant = quant; |
mb->quant = quant; |
501 |
|
mb->mvs[0].x = mb->mvs[0].y = |
502 |
|
mb->mvs[1].x = mb->mvs[1].y = |
503 |
|
mb->mvs[2].x = mb->mvs[2].y = |
504 |
|
mb->mvs[3].x = mb->mvs[3].y =0; |
505 |
|
|
506 |
|
if (dec->interlacing) { |
507 |
|
mb->field_dct = BitstreamGetBit(bs); |
508 |
|
DPRINTF(DPRINTF_DEBUG, "deci: field_dct: %d", mb->field_dct); |
509 |
|
} |
510 |
|
|
511 |
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, |
512 |
|
intra_dc_threshold, bound); |
513 |
} |
} |
514 |
|
if(dec->out_frm) |
515 |
|
output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,0,y,dec->mb_width); |
516 |
|
|
517 |
} |
} |
518 |
|
|
519 |
} |
} |
520 |
|
|
521 |
|
|
522 |
void get_motion_vector(DECODER *dec, Bitstream *bs, int x, int y, int k, VECTOR * mv, int fcode) |
void |
523 |
|
get_motion_vector(DECODER * dec, |
524 |
|
Bitstream * bs, |
525 |
|
int x, |
526 |
|
int y, |
527 |
|
int k, |
528 |
|
VECTOR * mv, |
529 |
|
int fcode, |
530 |
|
const int bound) |
531 |
{ |
{ |
532 |
|
|
533 |
int scale_fac = 1 << (fcode - 1); |
int scale_fac = 1 << (fcode - 1); |
534 |
int high = (32 * scale_fac) - 1; |
int high = (32 * scale_fac) - 1; |
535 |
int low = ((-32) * scale_fac); |
int low = ((-32) * scale_fac); |
536 |
int range = (64 * scale_fac); |
int range = (64 * scale_fac); |
537 |
|
|
538 |
VECTOR pmv[4]; |
VECTOR pmv; |
|
uint32_t psad[4]; |
|
|
|
|
539 |
int mv_x, mv_y; |
int mv_x, mv_y; |
|
int pmv_x, pmv_y; |
|
|
|
|
|
|
|
|
get_pmvdata(dec->mbs, x, y, dec->mb_width, k, pmv, psad); |
|
540 |
|
|
541 |
pmv_x = pmv[0].x; |
pmv = get_pmv2(dec->mbs, dec->mb_width, bound, x, y, k); |
|
pmv_y = pmv[0].y; |
|
542 |
|
|
543 |
mv_x = get_mv(bs, fcode); |
mv_x = get_mv(bs, fcode); |
544 |
mv_y = get_mv(bs, fcode); |
mv_y = get_mv(bs, fcode); |
545 |
|
|
546 |
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; |
|
547 |
|
|
548 |
if (mv_x < low) |
mv_x += pmv.x; |
549 |
{ |
mv_y += pmv.y; |
550 |
|
|
551 |
|
if (mv_x < low) { |
552 |
mv_x += range; |
mv_x += range; |
553 |
} |
} else if (mv_x > high) { |
|
else if (mv_x > high) |
|
|
{ |
|
554 |
mv_x -= range; |
mv_x -= range; |
555 |
} |
} |
556 |
|
|
557 |
if (mv_y < low) |
if (mv_y < low) { |
|
{ |
|
558 |
mv_y += range; |
mv_y += range; |
559 |
} |
} else if (mv_y > high) { |
|
else if (mv_y > high) |
|
|
{ |
|
560 |
mv_y -= range; |
mv_y -= range; |
561 |
} |
} |
562 |
|
|
566 |
} |
} |
567 |
|
|
568 |
|
|
569 |
void decoder_pframe(DECODER * dec, Bitstream * bs, int rounding, int quant, int fcode, int intra_dc_threshold) |
void |
570 |
|
decoder_pframe(DECODER * dec, |
571 |
|
Bitstream * bs, |
572 |
|
int rounding, |
573 |
|
int quant, |
574 |
|
int fcode, |
575 |
|
int intra_dc_threshold) |
576 |
{ |
{ |
|
uint32_t x, y; |
|
577 |
|
|
578 |
image_swap(&dec->cur, &dec->refn); |
uint32_t x, y; |
579 |
|
uint32_t bound; |
580 |
|
int cp_mb, st_mb; |
581 |
|
|
582 |
start_timer(); |
start_timer(); |
583 |
image_setedges(&dec->refn, dec->edged_width, dec->edged_height, dec->width, dec->height); |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
584 |
|
dec->width, dec->height); |
585 |
stop_edges_timer(); |
stop_edges_timer(); |
586 |
|
|
587 |
for (y = 0; y < dec->mb_height; y++) |
bound = 0; |
588 |
{ |
|
589 |
for (x = 0; x < dec->mb_width; x++) |
for (y = 0; y < dec->mb_height; y++) { |
590 |
|
cp_mb = st_mb = 0; |
591 |
|
for (x = 0; x < dec->mb_width; x++) { |
592 |
|
MACROBLOCK *mb; |
593 |
|
|
594 |
|
// skip stuffing |
595 |
|
while (BitstreamShowBits(bs, 10) == 1) |
596 |
|
BitstreamSkip(bs, 10); |
597 |
|
|
598 |
|
if (check_resync_marker(bs, fcode - 1)) |
599 |
{ |
{ |
600 |
MACROBLOCK * mb = &dec->mbs[y*dec->mb_width + x]; |
bound = read_video_packet_header(bs, fcode - 1, &quant); |
601 |
|
x = bound % dec->mb_width; |
602 |
|
y = bound / dec->mb_width; |
603 |
|
} |
604 |
|
mb = &dec->mbs[y * dec->mb_width + x]; |
605 |
|
|
606 |
if (!BitstreamGetBit(bs)) // not_coded |
DPRINTF(DPRINTF_MB, "macroblock (%i,%i) %08x", x, y, BitstreamShowBits(bs, 32)); |
607 |
|
|
608 |
|
//if (!(dec->mb_skip[y*dec->mb_width + x]=BitstreamGetBit(bs))) // not_coded |
609 |
|
if (!(BitstreamGetBit(bs))) // not_coded |
610 |
{ |
{ |
611 |
uint32_t mcbpc; |
uint32_t mcbpc; |
612 |
uint32_t cbpc; |
uint32_t cbpc; |
615 |
uint32_t cbp; |
uint32_t cbp; |
616 |
uint32_t intra; |
uint32_t intra; |
617 |
|
|
618 |
|
cp_mb++; |
619 |
mcbpc = get_mcbpc_inter(bs); |
mcbpc = get_mcbpc_inter(bs); |
620 |
mb->mode = mcbpc & 7; |
mb->mode = mcbpc & 7; |
621 |
cbpc = (mcbpc >> 4); |
cbpc = (mcbpc >> 4); |
622 |
|
|
623 |
|
DPRINTF(DPRINTF_MB, "mode %i", mb->mode); |
624 |
|
DPRINTF(DPRINTF_MB, "cbpc %i", cbpc); |
625 |
|
acpred_flag = 0; |
626 |
|
|
627 |
intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); |
intra = (mb->mode == MODE_INTRA || mb->mode == MODE_INTRA_Q); |
628 |
|
|
629 |
if (intra) |
if (intra) { |
|
{ |
|
630 |
acpred_flag = BitstreamGetBit(bs); |
acpred_flag = BitstreamGetBit(bs); |
631 |
} |
} |
632 |
|
|
|
if (mb->mode == MODE_STUFFING) |
|
|
{ |
|
|
DEBUG("-- STUFFING ?"); |
|
|
continue; |
|
|
} |
|
|
|
|
633 |
cbpy = get_cbpy(bs, intra); |
cbpy = get_cbpy(bs, intra); |
634 |
|
DPRINTF(DPRINTF_MB, "cbpy %i", cbpy); |
635 |
|
|
636 |
cbp = (cbpy << 2) | cbpc; |
cbp = (cbpy << 2) | cbpc; |
637 |
|
|
638 |
if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) |
if (mb->mode == MODE_INTER_Q || mb->mode == MODE_INTRA_Q) { |
639 |
{ |
int dquant = dquant_table[BitstreamGetBits(bs, 2)]; |
640 |
quant += dquant_table[BitstreamGetBits(bs,2)]; |
DPRINTF(DPRINTF_MB, "dquant %i", dquant); |
641 |
if (quant > 31) |
quant += dquant; |
642 |
{ |
if (quant > 31) { |
643 |
quant = 31; |
quant = 31; |
644 |
} |
} else if (quant < 1) { |
|
else if (mb->quant < 1) |
|
|
{ |
|
645 |
quant = 1; |
quant = 1; |
646 |
} |
} |
647 |
|
DPRINTF(DPRINTF_MB, "quant %i", quant); |
648 |
} |
} |
649 |
mb->quant = quant; |
mb->quant = quant; |
650 |
|
|
651 |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) |
if (dec->interlacing) { |
652 |
{ |
if (cbp || intra) { |
653 |
|
mb->field_dct = BitstreamGetBit(bs); |
654 |
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
DPRINTF(DPRINTF_DEBUG, "decp: field_dct: %d", mb->field_dct); |
655 |
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
} |
656 |
mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = mb->mvs[0].y; |
|
657 |
|
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
658 |
|
mb->field_pred = BitstreamGetBit(bs); |
659 |
|
DPRINTF(DPRINTF_DEBUG, "decp: field_pred: %d", mb->field_pred); |
660 |
|
|
661 |
|
if (mb->field_pred) { |
662 |
|
mb->field_for_top = BitstreamGetBit(bs); |
663 |
|
DPRINTF(DPRINTF_DEBUG, "decp: field_for_top: %d", mb->field_for_top); |
664 |
|
mb->field_for_bot = BitstreamGetBit(bs); |
665 |
|
DPRINTF(DPRINTF_DEBUG, "decp: field_for_bot: %d", mb->field_for_bot); |
666 |
} |
} |
|
else if (mb->mode == MODE_INTER4V /* || mb->mode == MODE_INTER4V_Q */) |
|
|
{ |
|
|
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode); |
|
|
get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode); |
|
|
get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode); |
|
|
get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode); |
|
667 |
} |
} |
|
else // MODE_INTRA, MODE_INTRA_Q |
|
|
{ |
|
|
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = 0; |
|
|
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = 0; |
|
|
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, intra_dc_threshold); |
|
|
continue; |
|
668 |
} |
} |
669 |
|
|
670 |
decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, rounding); |
if (mb->mode == MODE_INTER || mb->mode == MODE_INTER_Q) { |
671 |
|
if (dec->interlacing && mb->field_pred) { |
672 |
|
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
673 |
|
fcode, bound); |
674 |
|
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[1], |
675 |
|
fcode, bound); |
676 |
|
} else { |
677 |
|
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], |
678 |
|
fcode, bound); |
679 |
|
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
680 |
|
mb->mvs[0].x; |
681 |
|
mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
682 |
|
mb->mvs[0].y; |
683 |
|
} |
684 |
|
} else if (mb->mode == MODE_INTER4V ) { |
685 |
|
|
686 |
|
get_motion_vector(dec, bs, x, y, 0, &mb->mvs[0], fcode, bound); |
687 |
|
get_motion_vector(dec, bs, x, y, 1, &mb->mvs[1], fcode, bound); |
688 |
|
get_motion_vector(dec, bs, x, y, 2, &mb->mvs[2], fcode, bound); |
689 |
|
get_motion_vector(dec, bs, x, y, 3, &mb->mvs[3], fcode, bound); |
690 |
|
} else // MODE_INTRA, MODE_INTRA_Q |
691 |
|
{ |
692 |
|
mb->mvs[0].x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
693 |
|
0; |
694 |
|
mb->mvs[0].y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
695 |
|
0; |
696 |
|
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
697 |
|
intra_dc_threshold, bound); |
698 |
|
continue; |
699 |
} |
} |
700 |
else // not coded |
|
701 |
|
decoder_mbinter(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
702 |
|
rounding); |
703 |
|
} else // not coded |
704 |
{ |
{ |
705 |
|
DPRINTF(DPRINTF_DEBUG, "P-frame MB at (X,Y)=(%d,%d)", x, y); |
706 |
|
|
707 |
mb->mode = MODE_NOT_CODED; |
mb->mode = MODE_NOT_CODED; |
708 |
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; |
712 |
|
|
713 |
start_timer(); |
start_timer(); |
714 |
|
|
715 |
transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x), |
transfer8x8_copy(dec->cur.y + (16 * y) * dec->edged_width + |
716 |
dec->refn.y + (16*y)*dec->edged_width + (16*x), |
(16 * x), |
717 |
dec->edged_width); |
dec->refn[0].y + (16 * y) * dec->edged_width + |
718 |
|
(16 * x), dec->edged_width); |
719 |
transfer8x8_copy(dec->cur.y + (16*y)*dec->edged_width + (16*x+8), |
|
720 |
dec->refn.y + (16*y)*dec->edged_width + (16*x+8), |
transfer8x8_copy(dec->cur.y + (16 * y) * dec->edged_width + |
721 |
dec->edged_width); |
(16 * x + 8), |
722 |
|
dec->refn[0].y + (16 * y) * dec->edged_width + |
723 |
transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x), |
(16 * x + 8), dec->edged_width); |
724 |
dec->refn.y + (16*y+8)*dec->edged_width + (16*x), |
|
725 |
dec->edged_width); |
transfer8x8_copy(dec->cur.y + (16 * y + 8) * dec->edged_width + |
726 |
|
(16 * x), |
727 |
transfer8x8_copy(dec->cur.y + (16*y+8)*dec->edged_width + (16*x+8), |
dec->refn[0].y + (16 * y + |
728 |
dec->refn.y + (16*y+8)*dec->edged_width + (16*x+8), |
8) * dec->edged_width + |
729 |
dec->edged_width); |
(16 * x), dec->edged_width); |
730 |
|
|
731 |
transfer8x8_copy(dec->cur.u + (8*y)*dec->edged_width/2 + (8*x), |
transfer8x8_copy(dec->cur.y + (16 * y + 8) * dec->edged_width + |
732 |
dec->refn.u + (8*y)*dec->edged_width/2 + (8*x), |
(16 * x + 8), |
733 |
|
dec->refn[0].y + (16 * y + |
734 |
|
8) * dec->edged_width + |
735 |
|
(16 * x + 8), dec->edged_width); |
736 |
|
|
737 |
|
transfer8x8_copy(dec->cur.u + (8 * y) * dec->edged_width / 2 + |
738 |
|
(8 * x), |
739 |
|
dec->refn[0].u + |
740 |
|
(8 * y) * dec->edged_width / 2 + (8 * x), |
741 |
dec->edged_width/2); |
dec->edged_width/2); |
742 |
|
|
743 |
transfer8x8_copy(dec->cur.v + (8*y)*dec->edged_width/2 + (8*x), |
transfer8x8_copy(dec->cur.v + (8 * y) * dec->edged_width / 2 + |
744 |
dec->refn.v + (8*y)*dec->edged_width/2 + (8*x), |
(8 * x), |
745 |
|
dec->refn[0].v + |
746 |
|
(8 * y) * dec->edged_width / 2 + (8 * x), |
747 |
dec->edged_width/2); |
dec->edged_width/2); |
748 |
|
stop_transfer_timer(); |
749 |
|
if(dec->out_frm && cp_mb > 0) { |
750 |
|
output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb); |
751 |
|
cp_mb = 0; |
752 |
|
} |
753 |
|
st_mb = x+1; |
754 |
|
} |
755 |
|
} |
756 |
|
if(dec->out_frm && cp_mb > 0) |
757 |
|
output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb); |
758 |
|
} |
759 |
|
} |
760 |
|
|
761 |
|
|
762 |
|
// add by MinChen <chenm001@163.com> |
763 |
|
// decode B-frame motion vector |
764 |
|
void |
765 |
|
get_b_motion_vector(DECODER * dec, |
766 |
|
Bitstream * bs, |
767 |
|
int x, |
768 |
|
int y, |
769 |
|
VECTOR * mv, |
770 |
|
int fcode, |
771 |
|
const VECTOR pmv) |
772 |
|
{ |
773 |
|
int scale_fac = 1 << (fcode - 1); |
774 |
|
int high = (32 * scale_fac) - 1; |
775 |
|
int low = ((-32) * scale_fac); |
776 |
|
int range = (64 * scale_fac); |
777 |
|
|
778 |
|
int mv_x, mv_y; |
779 |
|
int pmv_x, pmv_y; |
780 |
|
|
781 |
|
pmv_x = pmv.x; |
782 |
|
pmv_y = pmv.y; |
783 |
|
|
784 |
|
mv_x = get_mv(bs, fcode); |
785 |
|
mv_y = get_mv(bs, fcode); |
786 |
|
|
787 |
|
mv_x += pmv_x; |
788 |
|
mv_y += pmv_y; |
789 |
|
|
790 |
|
if (mv_x < low) { |
791 |
|
mv_x += range; |
792 |
|
} else if (mv_x > high) { |
793 |
|
mv_x -= range; |
794 |
|
} |
795 |
|
|
796 |
|
if (mv_y < low) { |
797 |
|
mv_y += range; |
798 |
|
} else if (mv_y > high) { |
799 |
|
mv_y -= range; |
800 |
|
} |
801 |
|
|
802 |
|
mv->x = mv_x; |
803 |
|
mv->y = mv_y; |
804 |
|
} |
805 |
|
|
806 |
|
|
807 |
|
// add by MinChen <chenm001@163.com> |
808 |
|
// decode an B-frame forward & backward inter macroblock |
809 |
|
void |
810 |
|
decoder_bf_mbinter(DECODER * dec, |
811 |
|
const MACROBLOCK * pMB, |
812 |
|
const uint32_t x_pos, |
813 |
|
const uint32_t y_pos, |
814 |
|
const uint32_t cbp, |
815 |
|
Bitstream * bs, |
816 |
|
const uint32_t quant, |
817 |
|
const uint8_t ref) |
818 |
|
{ |
819 |
|
|
820 |
|
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
821 |
|
DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
822 |
|
|
823 |
|
uint32_t stride = dec->edged_width; |
824 |
|
uint32_t stride2 = stride / 2; |
825 |
|
uint32_t next_block = stride * 8; |
826 |
|
uint32_t i; |
827 |
|
uint32_t iQuant = pMB->quant; |
828 |
|
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
829 |
|
int uv_dx, uv_dy; |
830 |
|
|
831 |
|
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
832 |
|
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
833 |
|
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
834 |
|
|
835 |
|
|
836 |
|
if (!(pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
837 |
|
uv_dx = pMB->mvs[0].x; |
838 |
|
uv_dy = pMB->mvs[0].y; |
839 |
|
|
840 |
|
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
841 |
|
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
842 |
|
} else { |
843 |
|
int sum; |
844 |
|
|
845 |
|
sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
846 |
|
uv_dx = |
847 |
|
(sum == |
848 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
849 |
|
(ABS(sum) / 16) * 2)); |
850 |
|
|
851 |
|
sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
852 |
|
uv_dy = |
853 |
|
(sum == |
854 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
855 |
|
(ABS(sum) / 16) * 2)); |
856 |
|
} |
857 |
|
|
858 |
|
start_timer(); |
859 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos, 16 * y_pos, |
860 |
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
861 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos + 8, |
862 |
|
16 * y_pos, pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); |
863 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos, |
864 |
|
16 * y_pos + 8, pMB->mvs[2].x, pMB->mvs[2].y, stride, |
865 |
|
0); |
866 |
|
interpolate8x8_switch(dec->cur.y, dec->refn[ref].y, 16 * x_pos + 8, |
867 |
|
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
868 |
|
0); |
869 |
|
interpolate8x8_switch(dec->cur.u, dec->refn[ref].u, 8 * x_pos, 8 * y_pos, |
870 |
|
uv_dx, uv_dy, stride2, 0); |
871 |
|
interpolate8x8_switch(dec->cur.v, dec->refn[ref].v, 8 * x_pos, 8 * y_pos, |
872 |
|
uv_dx, uv_dy, stride2, 0); |
873 |
|
stop_comp_timer(); |
874 |
|
|
875 |
|
for (i = 0; i < 6; i++) { |
876 |
|
if (cbp & (1 << (5 - i))) // coded |
877 |
|
{ |
878 |
|
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear |
879 |
|
|
880 |
|
start_timer(); |
881 |
|
get_inter_block(bs, &block[i * 64]); |
882 |
|
stop_coding_timer(); |
883 |
|
|
884 |
|
start_timer(); |
885 |
|
if (dec->quant_type == 0) { |
886 |
|
dequant_inter(&data[i * 64], &block[i * 64], iQuant); |
887 |
|
} else { |
888 |
|
dequant4_inter(&data[i * 64], &block[i * 64], iQuant); |
889 |
|
} |
890 |
|
stop_iquant_timer(); |
891 |
|
|
892 |
|
start_timer(); |
893 |
|
idct(&data[i * 64]); |
894 |
|
stop_idct_timer(); |
895 |
|
} |
896 |
|
} |
897 |
|
|
898 |
|
if (dec->interlacing && pMB->field_dct) { |
899 |
|
next_block = stride; |
900 |
|
stride *= 2; |
901 |
|
} |
902 |
|
|
903 |
|
start_timer(); |
904 |
|
if (cbp & 32) |
905 |
|
transfer_16to8add(pY_Cur, &data[0 * 64], stride); |
906 |
|
if (cbp & 16) |
907 |
|
transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); |
908 |
|
if (cbp & 8) |
909 |
|
transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); |
910 |
|
if (cbp & 4) |
911 |
|
transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride); |
912 |
|
if (cbp & 2) |
913 |
|
transfer_16to8add(pU_Cur, &data[4 * 64], stride2); |
914 |
|
if (cbp & 1) |
915 |
|
transfer_16to8add(pV_Cur, &data[5 * 64], stride2); |
916 |
|
stop_transfer_timer(); |
917 |
|
} |
918 |
|
|
919 |
|
|
920 |
|
// add by MinChen <chenm001@163.com> |
921 |
|
// decode an B-frame direct & inter macroblock |
922 |
|
void |
923 |
|
decoder_bf_interpolate_mbinter(DECODER * dec, |
924 |
|
IMAGE forward, |
925 |
|
IMAGE backward, |
926 |
|
const MACROBLOCK * pMB, |
927 |
|
const uint32_t x_pos, |
928 |
|
const uint32_t y_pos, |
929 |
|
Bitstream * bs) |
930 |
|
{ |
931 |
|
|
932 |
|
DECLARE_ALIGNED_MATRIX(block, 6, 64, int16_t, CACHE_LINE); |
933 |
|
DECLARE_ALIGNED_MATRIX(data, 6, 64, int16_t, CACHE_LINE); |
934 |
|
|
935 |
|
uint32_t stride = dec->edged_width; |
936 |
|
uint32_t stride2 = stride / 2; |
937 |
|
uint32_t next_block = stride * 8; |
938 |
|
uint32_t iQuant = pMB->quant; |
939 |
|
int uv_dx, uv_dy; |
940 |
|
int b_uv_dx, b_uv_dy; |
941 |
|
uint32_t i; |
942 |
|
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
943 |
|
const uint32_t cbp = pMB->cbp; |
944 |
|
|
945 |
|
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
946 |
|
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
947 |
|
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
948 |
|
|
949 |
|
|
950 |
|
if ((pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
951 |
|
uv_dx = pMB->mvs[0].x; |
952 |
|
uv_dy = pMB->mvs[0].y; |
953 |
|
|
954 |
|
uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
955 |
|
uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
956 |
|
|
957 |
|
b_uv_dx = pMB->b_mvs[0].x; |
958 |
|
b_uv_dy = pMB->b_mvs[0].y; |
959 |
|
|
960 |
|
b_uv_dx = (uv_dx & 3) ? (uv_dx >> 1) | 1 : uv_dx / 2; |
961 |
|
b_uv_dy = (uv_dy & 3) ? (uv_dy >> 1) | 1 : uv_dy / 2; |
962 |
|
} else { |
963 |
|
int sum; |
964 |
|
|
965 |
|
sum = pMB->mvs[0].x + pMB->mvs[1].x + pMB->mvs[2].x + pMB->mvs[3].x; |
966 |
|
uv_dx = |
967 |
|
(sum == |
968 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
969 |
|
(ABS(sum) / 16) * 2)); |
970 |
|
|
971 |
|
sum = pMB->mvs[0].y + pMB->mvs[1].y + pMB->mvs[2].y + pMB->mvs[3].y; |
972 |
|
uv_dy = |
973 |
|
(sum == |
974 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
975 |
|
(ABS(sum) / 16) * 2)); |
976 |
|
|
977 |
|
sum = |
978 |
|
pMB->b_mvs[0].x + pMB->b_mvs[1].x + pMB->b_mvs[2].x + |
979 |
|
pMB->b_mvs[3].x; |
980 |
|
b_uv_dx = |
981 |
|
(sum == |
982 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
983 |
|
(ABS(sum) / 16) * 2)); |
984 |
|
|
985 |
|
sum = |
986 |
|
pMB->b_mvs[0].y + pMB->b_mvs[1].y + pMB->b_mvs[2].y + |
987 |
|
pMB->b_mvs[3].y; |
988 |
|
b_uv_dy = |
989 |
|
(sum == |
990 |
|
0 ? 0 : SIGN(sum) * (roundtab[ABS(sum) % 16] + |
991 |
|
(ABS(sum) / 16) * 2)); |
992 |
|
} |
993 |
|
|
994 |
|
|
995 |
|
start_timer(); |
996 |
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos, |
997 |
|
pMB->mvs[0].x, pMB->mvs[0].y, stride, 0); |
998 |
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, 16 * y_pos, |
999 |
|
pMB->mvs[1].x, pMB->mvs[1].y, stride, 0); |
1000 |
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos, 16 * y_pos + 8, |
1001 |
|
pMB->mvs[2].x, pMB->mvs[2].y, stride, 0); |
1002 |
|
interpolate8x8_switch(dec->cur.y, forward.y, 16 * x_pos + 8, |
1003 |
|
16 * y_pos + 8, pMB->mvs[3].x, pMB->mvs[3].y, stride, |
1004 |
|
0); |
1005 |
|
interpolate8x8_switch(dec->cur.u, forward.u, 8 * x_pos, 8 * y_pos, uv_dx, |
1006 |
|
uv_dy, stride2, 0); |
1007 |
|
interpolate8x8_switch(dec->cur.v, forward.v, 8 * x_pos, 8 * y_pos, uv_dx, |
1008 |
|
uv_dy, stride2, 0); |
1009 |
|
|
1010 |
|
|
1011 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos, 16 * y_pos, |
1012 |
|
pMB->b_mvs[0].x, pMB->b_mvs[0].y, stride, 0); |
1013 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos + 8, |
1014 |
|
16 * y_pos, pMB->b_mvs[1].x, pMB->b_mvs[1].y, stride, |
1015 |
|
0); |
1016 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos, |
1017 |
|
16 * y_pos + 8, pMB->b_mvs[2].x, pMB->b_mvs[2].y, |
1018 |
|
stride, 0); |
1019 |
|
interpolate8x8_switch(dec->refn[2].y, backward.y, 16 * x_pos + 8, |
1020 |
|
16 * y_pos + 8, pMB->b_mvs[3].x, pMB->b_mvs[3].y, |
1021 |
|
stride, 0); |
1022 |
|
interpolate8x8_switch(dec->refn[2].u, backward.u, 8 * x_pos, 8 * y_pos, |
1023 |
|
b_uv_dx, b_uv_dy, stride2, 0); |
1024 |
|
interpolate8x8_switch(dec->refn[2].v, backward.v, 8 * x_pos, 8 * y_pos, |
1025 |
|
b_uv_dx, b_uv_dy, stride2, 0); |
1026 |
|
|
1027 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos, 16 * y_pos, |
1028 |
|
stride); |
1029 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos + 8, 16 * y_pos, |
1030 |
|
stride); |
1031 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos, 16 * y_pos + 8, |
1032 |
|
stride); |
1033 |
|
interpolate8x8_c(dec->cur.y, dec->refn[2].y, 16 * x_pos + 8, |
1034 |
|
16 * y_pos + 8, stride); |
1035 |
|
interpolate8x8_c(dec->cur.u, dec->refn[2].u, 8 * x_pos, 8 * y_pos, |
1036 |
|
stride2); |
1037 |
|
interpolate8x8_c(dec->cur.v, dec->refn[2].v, 8 * x_pos, 8 * y_pos, |
1038 |
|
stride2); |
1039 |
|
stop_comp_timer(); |
1040 |
|
|
1041 |
|
for (i = 0; i < 6; i++) { |
1042 |
|
if (cbp & (1 << (5 - i))) // coded |
1043 |
|
{ |
1044 |
|
memset(&block[i * 64], 0, 64 * sizeof(int16_t)); // clear |
1045 |
|
|
1046 |
|
start_timer(); |
1047 |
|
get_inter_block(bs, &block[i * 64]); |
1048 |
|
stop_coding_timer(); |
1049 |
|
|
1050 |
|
start_timer(); |
1051 |
|
if (dec->quant_type == 0) { |
1052 |
|
dequant_inter(&data[i * 64], &block[i * 64], iQuant); |
1053 |
|
} else { |
1054 |
|
dequant4_inter(&data[i * 64], &block[i * 64], iQuant); |
1055 |
|
} |
1056 |
|
stop_iquant_timer(); |
1057 |
|
|
1058 |
|
start_timer(); |
1059 |
|
idct(&data[i * 64]); |
1060 |
|
stop_idct_timer(); |
1061 |
|
} |
1062 |
|
} |
1063 |
|
|
1064 |
|
if (dec->interlacing && pMB->field_dct) { |
1065 |
|
next_block = stride; |
1066 |
|
stride *= 2; |
1067 |
|
} |
1068 |
|
|
1069 |
|
start_timer(); |
1070 |
|
if (cbp & 32) |
1071 |
|
transfer_16to8add(pY_Cur, &data[0 * 64], stride); |
1072 |
|
if (cbp & 16) |
1073 |
|
transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); |
1074 |
|
if (cbp & 8) |
1075 |
|
transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); |
1076 |
|
if (cbp & 4) |
1077 |
|
transfer_16to8add(pY_Cur + 8 + next_block, &data[3 * 64], stride); |
1078 |
|
if (cbp & 2) |
1079 |
|
transfer_16to8add(pU_Cur, &data[4 * 64], stride2); |
1080 |
|
if (cbp & 1) |
1081 |
|
transfer_16to8add(pV_Cur, &data[5 * 64], stride2); |
1082 |
stop_transfer_timer(); |
stop_transfer_timer(); |
1083 |
} |
} |
1084 |
|
|
1085 |
|
|
1086 |
|
// add by MinChen <chenm001@163.com> |
1087 |
|
// for decode B-frame dbquant |
1088 |
|
int32_t __inline |
1089 |
|
get_dbquant(Bitstream * bs) |
1090 |
|
{ |
1091 |
|
if (!BitstreamGetBit(bs)) // '0' |
1092 |
|
return (0); |
1093 |
|
else if (!BitstreamGetBit(bs)) // '10' |
1094 |
|
return (-2); |
1095 |
|
else |
1096 |
|
return (2); // '11' |
1097 |
} |
} |
1098 |
|
|
1099 |
|
// add by MinChen <chenm001@163.com> |
1100 |
|
// for decode B-frame mb_type |
1101 |
|
// bit ret_value |
1102 |
|
// 1 0 |
1103 |
|
// 01 1 |
1104 |
|
// 001 2 |
1105 |
|
// 0001 3 |
1106 |
|
int32_t __inline |
1107 |
|
get_mbtype(Bitstream * bs) |
1108 |
|
{ |
1109 |
|
int32_t mb_type; |
1110 |
|
|
1111 |
|
for (mb_type = 0; mb_type <= 3; mb_type++) { |
1112 |
|
if (BitstreamGetBit(bs)) |
1113 |
|
break; |
1114 |
} |
} |
1115 |
|
|
1116 |
|
if (mb_type <= 3) |
1117 |
|
return (mb_type); |
1118 |
|
else |
1119 |
|
return (-1); |
1120 |
} |
} |
1121 |
|
|
1122 |
int decoder_decode(DECODER * dec, XVID_DEC_FRAME * frame) |
void |
1123 |
|
decoder_bframe(DECODER * dec, |
1124 |
|
Bitstream * bs, |
1125 |
|
int quant, |
1126 |
|
int fcode_forward, |
1127 |
|
int fcode_backward) |
1128 |
{ |
{ |
1129 |
|
uint32_t x, y; |
1130 |
|
VECTOR mv; |
1131 |
|
const VECTOR zeromv = {0,0}; |
1132 |
|
#ifdef BFRAMES_DEC_DEBUG |
1133 |
|
FILE *fp; |
1134 |
|
static char first=0; |
1135 |
|
#define BFRAME_DEBUG if (!first && fp){ \ |
1136 |
|
fprintf(fp,"Y=%3d X=%3d MB=%2d CBP=%02X\n",y,x,mb->mb_type,mb->cbp); \ |
1137 |
|
} |
1138 |
|
#endif |
1139 |
|
|
1140 |
|
start_timer(); |
1141 |
|
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
1142 |
|
dec->width, dec->height); |
1143 |
|
image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height, |
1144 |
|
dec->width, dec->height); |
1145 |
|
stop_edges_timer(); |
1146 |
|
|
1147 |
|
#ifdef BFRAMES_DEC_DEBUG |
1148 |
|
if (!first){ |
1149 |
|
fp=fopen("C:\\XVIDDBG.TXT","w"); |
1150 |
|
} |
1151 |
|
#endif |
1152 |
|
|
1153 |
|
for (y = 0; y < dec->mb_height; y++) { |
1154 |
|
// Initialize Pred Motion Vector |
1155 |
|
dec->p_fmv = dec->p_bmv = zeromv; |
1156 |
|
for (x = 0; x < dec->mb_width; x++) { |
1157 |
|
MACROBLOCK *mb = &dec->mbs[y * dec->mb_width + x]; |
1158 |
|
MACROBLOCK *last_mb = &dec->last_mbs[y * dec->mb_width + x]; |
1159 |
|
|
1160 |
|
mv = |
1161 |
|
mb->b_mvs[0] = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] = |
1162 |
|
mb->mvs[0] = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = zeromv; |
1163 |
|
|
1164 |
|
// the last P_VOP is skip macroblock ? |
1165 |
|
if (last_mb->mode == MODE_NOT_CODED) { |
1166 |
|
//DEBUG2("Skip MB in B-frame at (X,Y)=!",x,y); |
1167 |
|
mb->cbp = 0; |
1168 |
|
#ifdef BFRAMES_DEC_DEBUG |
1169 |
|
mb->mb_type = MODE_NOT_CODED; |
1170 |
|
BFRAME_DEBUG |
1171 |
|
#endif |
1172 |
|
mb->mb_type = MODE_FORWARD; |
1173 |
|
mb->quant = last_mb->quant; |
1174 |
|
//mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
1175 |
|
//mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = mb->mvs[0].y; |
1176 |
|
|
1177 |
|
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, mb->quant, 1); |
1178 |
|
continue; |
1179 |
|
} |
1180 |
|
|
1181 |
|
if (!BitstreamGetBit(bs)) { // modb=='0' |
1182 |
|
const uint8_t modb2 = BitstreamGetBit(bs); |
1183 |
|
|
1184 |
|
mb->mb_type = get_mbtype(bs); |
1185 |
|
|
1186 |
|
if (!modb2) { // modb=='00' |
1187 |
|
mb->cbp = BitstreamGetBits(bs, 6); |
1188 |
|
} else { |
1189 |
|
mb->cbp = 0; |
1190 |
|
} |
1191 |
|
if (mb->mb_type && mb->cbp) { |
1192 |
|
quant += get_dbquant(bs); |
1193 |
|
|
1194 |
|
if (quant > 31) { |
1195 |
|
quant = 31; |
1196 |
|
} else if (quant < 1) { |
1197 |
|
quant = 1; |
1198 |
|
} |
1199 |
|
} |
1200 |
|
} else { |
1201 |
|
mb->mb_type = MODE_DIRECT_NONE_MV; |
1202 |
|
mb->cbp = 0; |
1203 |
|
} |
1204 |
|
|
1205 |
|
mb->quant = quant; |
1206 |
|
mb->mode = MODE_INTER4V; |
1207 |
|
//DEBUG1("Switch bm_type=",mb->mb_type); |
1208 |
|
|
1209 |
|
#ifdef BFRAMES_DEC_DEBUG |
1210 |
|
BFRAME_DEBUG |
1211 |
|
#endif |
1212 |
|
|
1213 |
|
switch (mb->mb_type) { |
1214 |
|
case MODE_DIRECT: |
1215 |
|
get_b_motion_vector(dec, bs, x, y, &mv, 1, zeromv); |
1216 |
|
|
1217 |
|
case MODE_DIRECT_NONE_MV: |
1218 |
|
{ |
1219 |
|
const int64_t TRB = dec->time_pp - dec->time_bp, TRD = dec->time_pp; |
1220 |
|
int i; |
1221 |
|
|
1222 |
|
for (i = 0; i < 4; i++) { |
1223 |
|
mb->mvs[i].x = (int32_t) ((TRB * last_mb->mvs[i].x) |
1224 |
|
/ TRD + mv.x); |
1225 |
|
mb->b_mvs[i].x = (int32_t) ((mv.x == 0) |
1226 |
|
? ((TRB - TRD) * last_mb->mvs[i].x) |
1227 |
|
/ TRD |
1228 |
|
: mb->mvs[i].x - last_mb->mvs[i].x); |
1229 |
|
mb->mvs[i].y = (int32_t) ((TRB * last_mb->mvs[i].y) |
1230 |
|
/ TRD + mv.y); |
1231 |
|
mb->b_mvs[i].y = (int32_t) ((mv.y == 0) |
1232 |
|
? ((TRB - TRD) * last_mb->mvs[i].y) |
1233 |
|
/ TRD |
1234 |
|
: mb->mvs[i].y - last_mb->mvs[i].y); |
1235 |
|
} |
1236 |
|
//DEBUG("B-frame Direct!\n"); |
1237 |
|
} |
1238 |
|
decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], |
1239 |
|
mb, x, y, bs); |
1240 |
|
break; |
1241 |
|
|
1242 |
|
case MODE_INTERPOLATE: |
1243 |
|
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, |
1244 |
|
dec->p_fmv); |
1245 |
|
dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
1246 |
|
|
1247 |
|
get_b_motion_vector(dec, bs, x, y, &mb->b_mvs[0], |
1248 |
|
fcode_backward, dec->p_bmv); |
1249 |
|
dec->p_bmv = mb->b_mvs[1] = mb->b_mvs[2] = |
1250 |
|
mb->b_mvs[3] = mb->b_mvs[0]; |
1251 |
|
|
1252 |
|
decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], |
1253 |
|
mb, x, y, bs); |
1254 |
|
//DEBUG("B-frame Bidir!\n"); |
1255 |
|
break; |
1256 |
|
|
1257 |
|
case MODE_BACKWARD: |
1258 |
|
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_backward, |
1259 |
|
dec->p_bmv); |
1260 |
|
dec->p_bmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
1261 |
|
|
1262 |
|
mb->mode = MODE_INTER; |
1263 |
|
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 0); |
1264 |
|
//DEBUG("B-frame Backward!\n"); |
1265 |
|
break; |
1266 |
|
|
1267 |
|
case MODE_FORWARD: |
1268 |
|
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, |
1269 |
|
dec->p_fmv); |
1270 |
|
dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
1271 |
|
|
1272 |
|
mb->mode = MODE_INTER; |
1273 |
|
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
1274 |
|
//DEBUG("B-frame Forward!\n"); |
1275 |
|
break; |
1276 |
|
|
1277 |
|
default: |
1278 |
|
DPRINTF(DPRINTF_ERROR, "Not support B-frame mb_type = %d", mb->mb_type); |
1279 |
|
} |
1280 |
|
|
1281 |
|
} // end of FOR |
1282 |
|
} |
1283 |
|
#ifdef BFRAMES_DEC_DEBUG |
1284 |
|
if (!first){ |
1285 |
|
first=1; |
1286 |
|
if (fp) |
1287 |
|
fclose(fp); |
1288 |
|
} |
1289 |
|
#endif |
1290 |
|
} |
1291 |
|
|
1292 |
|
// swap two MACROBLOCK array |
1293 |
|
void |
1294 |
|
mb_swap(MACROBLOCK ** mb1, |
1295 |
|
MACROBLOCK ** mb2) |
1296 |
|
{ |
1297 |
|
MACROBLOCK *temp = *mb1; |
1298 |
|
|
1299 |
|
*mb1 = *mb2; |
1300 |
|
*mb2 = temp; |
1301 |
|
} |
1302 |
|
|
1303 |
|
int |
1304 |
|
decoder_decode(DECODER * dec, |
1305 |
|
XVID_DEC_FRAME * frame) |
1306 |
|
{ |
1307 |
|
|
1308 |
Bitstream bs; |
Bitstream bs; |
1309 |
uint32_t rounding; |
uint32_t rounding; |
1310 |
uint32_t quant; |
uint32_t quant; |
1311 |
uint32_t fcode; |
uint32_t fcode_forward; |
1312 |
|
uint32_t fcode_backward; |
1313 |
uint32_t intra_dc_threshold; |
uint32_t intra_dc_threshold; |
1314 |
|
uint32_t vop_type; |
1315 |
|
|
1316 |
start_global_timer(); |
start_global_timer(); |
1317 |
|
|
1318 |
|
dec->out_frm = (frame->colorspace == XVID_CSP_EXTERN) ? frame->image : NULL; |
1319 |
|
|
1320 |
BitstreamInit(&bs, frame->bitstream, frame->length); |
BitstreamInit(&bs, frame->bitstream, frame->length); |
1321 |
|
|
1322 |
switch (BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode, &intra_dc_threshold)) |
// add by chenm001 <chenm001@163.com> |
1323 |
{ |
// for support B-frame to reference last 2 frame |
1324 |
|
dec->frames++; |
1325 |
|
vop_type = |
1326 |
|
BitstreamReadHeaders(&bs, dec, &rounding, &quant, &fcode_forward, |
1327 |
|
&fcode_backward, &intra_dc_threshold); |
1328 |
|
|
1329 |
|
dec->p_bmv.x = dec->p_bmv.y = dec->p_fmv.y = dec->p_fmv.y = 0; // init pred vector to 0 |
1330 |
|
|
1331 |
|
switch (vop_type) { |
1332 |
case P_VOP : |
case P_VOP : |
1333 |
decoder_pframe(dec, &bs, rounding, quant, fcode, intra_dc_threshold); |
decoder_pframe(dec, &bs, rounding, quant, fcode_forward, |
1334 |
|
intra_dc_threshold); |
1335 |
|
#ifdef BFRAMES_DEC |
1336 |
|
DPRINTF(DPRINTF_DEBUG, "P_VOP Time=%d", dec->time); |
1337 |
|
#endif |
1338 |
break; |
break; |
1339 |
|
|
1340 |
case I_VOP : |
case I_VOP : |
|
//DEBUG1("",intra_dc_threshold); |
|
1341 |
decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
decoder_iframe(dec, &bs, quant, intra_dc_threshold); |
1342 |
|
#ifdef BFRAMES_DEC |
1343 |
|
DPRINTF(DPRINTF_DEBUG, "I_VOP Time=%d", dec->time); |
1344 |
|
#endif |
1345 |
break; |
break; |
1346 |
|
|
1347 |
case B_VOP : // ignore |
case B_VOP: |
1348 |
|
#ifdef BFRAMES_DEC |
1349 |
|
if (dec->time_pp > dec->time_bp) { |
1350 |
|
DPRINTF(DPRINTF_DEBUG, "B_VOP Time=%d", dec->time); |
1351 |
|
decoder_bframe(dec, &bs, quant, fcode_forward, fcode_backward); |
1352 |
|
} else { |
1353 |
|
DPRINTF(DPRINTF_DEBUG, "Broken B_VOP"); |
1354 |
|
} |
1355 |
|
#else |
1356 |
|
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
1357 |
|
#endif |
1358 |
break; |
break; |
1359 |
|
|
1360 |
case N_VOP : // vop not coded |
case N_VOP : // vop not coded |
1361 |
|
// when low_delay==0, N_VOP's should interpolate between the past and future frames |
1362 |
|
image_copy(&dec->cur, &dec->refn[0], dec->edged_width, dec->height); |
1363 |
break; |
break; |
1364 |
|
|
1365 |
default : |
default : |
1366 |
return XVID_ERR_FAIL; |
return XVID_ERR_FAIL; |
1367 |
} |
} |
1368 |
|
|
1369 |
|
#ifdef BFRAMES_DEC_DEBUG |
1370 |
|
if (frame->length != BitstreamPos(&bs) / 8){ |
1371 |
|
DPRINTF(DPRINTF_DEBUG, "InLen: %d / UseLen: %d", frame->length, BitstreamPos(&bs) / 8); |
1372 |
|
} |
1373 |
|
#endif |
1374 |
frame->length = BitstreamPos(&bs) / 8; |
frame->length = BitstreamPos(&bs) / 8; |
1375 |
|
|
1376 |
start_timer(); |
|
1377 |
|
#ifdef BFRAMES_DEC |
1378 |
|
// test if no B_VOP |
1379 |
|
if (dec->low_delay || dec->frames == 0) { |
1380 |
|
#endif |
1381 |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
1382 |
frame->image, frame->stride, frame->colorspace); |
frame->image, frame->stride, frame->colorspace); |
1383 |
|
|
1384 |
|
#ifdef BFRAMES_DEC |
1385 |
|
} else { |
1386 |
|
if (dec->frames >= 1) { |
1387 |
|
start_timer(); |
1388 |
|
if ((vop_type == I_VOP || vop_type == P_VOP)) { |
1389 |
|
image_output(&dec->refn[0], dec->width, dec->height, |
1390 |
|
dec->edged_width, frame->image, frame->stride, |
1391 |
|
frame->colorspace); |
1392 |
|
} else if (vop_type == B_VOP) { |
1393 |
|
image_output(&dec->cur, dec->width, dec->height, |
1394 |
|
dec->edged_width, frame->image, frame->stride, |
1395 |
|
frame->colorspace); |
1396 |
|
} |
1397 |
stop_conv_timer(); |
stop_conv_timer(); |
1398 |
|
} |
1399 |
|
} |
1400 |
|
#endif |
1401 |
|
|
1402 |
|
if (vop_type == I_VOP || vop_type == P_VOP) { |
1403 |
|
image_swap(&dec->refn[0], &dec->refn[1]); |
1404 |
|
image_swap(&dec->cur, &dec->refn[0]); |
1405 |
|
|
1406 |
|
// swap MACROBLOCK |
1407 |
|
// the Divx will not set the low_delay flage some times |
1408 |
|
// so follow code will wrong to not swap at that time |
1409 |
|
// this will broken bitstream! so I'm change it, |
1410 |
|
// But that is not the best way! can anyone tell me how |
1411 |
|
// to do another way? |
1412 |
|
// 18-07-2002 MinChen<chenm001@163.com> |
1413 |
|
//if (!dec->low_delay && vop_type == P_VOP) |
1414 |
|
if (vop_type == P_VOP) |
1415 |
|
mb_swap(&dec->mbs, &dec->last_mbs); |
1416 |
|
} |
1417 |
|
|
1418 |
emms(); |
emms(); |
1419 |
|
|