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/****************************************************************************** |
/***************************************************************************** |
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* * |
* |
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* This file is part of XviD, a free MPEG-4 video encoder/decoder * |
* XVID MPEG-4 VIDEO CODEC |
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* * |
* - Macro Block coding functions - |
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* XviD is an implementation of a part of one or more MPEG-4 Video tools * |
* |
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* as specified in ISO/IEC 14496-2 standard. Those intending to use this * |
* Copyright(C) 2002 Michael Militzer <isibaar@xvid.org> |
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* software module in hardware or software products are advised that its * |
* |
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* use may infringe existing patents or copyrights, and any such use * |
* |
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* would be at such party's own risk. The original developer of this * |
* This program is an implementation of a part of one or more MPEG-4 |
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* software module and his/her company, and subsequent editors and their * |
* Video tools as specified in ISO/IEC 14496-2 standard. Those intending |
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* companies, will have no liability for use of this software or * |
* to use this software module in hardware or software products are |
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* modifications or derivatives thereof. * |
* 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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* XviD is free software; you can redistribute it and/or modify it * |
* developer of this software module and his/her company, and subsequent |
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* under the terms of the GNU General Public License as published by * |
* editors and their companies, will have no liability for use of this |
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* the Free Software Foundation; either version 2 of the License, or * |
* software or modifications or derivatives thereof. |
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* (at your option) any later version. * |
* |
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* * |
* This program is free software; you can redistribute it and/or modify |
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* XviD is distributed in the hope that it will be useful, but * |
* it under the terms of the GNU General Public License as published by |
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* WITHOUT ANY WARRANTY; without even the implied warranty of * |
* the Free Software Foundation; either version 2 of the License, or |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
* (at your option) any later version. |
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* GNU General Public License for more details. * |
* |
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* * |
* This program is distributed in the hope that it will be useful, |
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* You should have received a copy of the GNU General Public License * |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* along with this program; if not, write to the Free Software * |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * |
* 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 |
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* along with this program; if not, write to the Free Software |
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/****************************************************************************** |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* * |
* |
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* mbcoding.c * |
* $Id$ |
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* * |
* |
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* Copyright (C) 2002 - Michael Militzer <isibaar@xvid.org> * |
****************************************************************************/ |
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* * |
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* For more information visit the XviD homepage: http://www.xvid.org * |
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* * |
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******************************************************************************/ |
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/****************************************************************************** |
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* * |
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* Revision history: * |
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* * |
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* 04.01.2003 GMC support - gruel * |
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* 28.06.2002 added check_resync_marker() * |
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* 14.04.2002 bframe encoding * |
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* 08.03.2002 initial version; isibaar * |
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* * |
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******************************************************************************/ |
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#include <stdio.h> |
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#include <stdlib.h> |
#include <stdlib.h> |
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#include "../portab.h" |
#include "../portab.h" |
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#include "../global.h" |
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#include "bitstream.h" |
#include "bitstream.h" |
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#include "zigzag.h" |
#include "zigzag.h" |
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#include "vlc_codes.h" |
#include "vlc_codes.h" |
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#include "../utils/mbfunctions.h" |
#include "../utils/mbfunctions.h" |
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VLC intra_table[4*2048*64]; |
#define ABS(X) (((X)>0)?(X):-(X)) |
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VLC inter_table[4*2048*64]; |
#define CLIP(X,A) (X > A) ? (A) : (X) |
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VLC DCT3Dintra[4096]; |
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VLC DCT3Dinter[4096]; |
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/* not really MB related, but VLCs are only available here */ |
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void bs_put_spritetrajectory(Bitstream * bs, const int val) |
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{ |
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const int code = sprite_trajectory_code[val+16384].code; |
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const int len = sprite_trajectory_code[val+16384].len; |
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const int code2 = sprite_trajectory_len[len].code; |
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const int len2 = sprite_trajectory_len[len].len; |
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// printf("GMC=%d Code/Len = %d / %d ",val, code,len); |
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// printf("Code2 / Len2 = %d / %d \n",code2,len2); |
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BitstreamPutBits(bs, code2, len2); |
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if (len) BitstreamPutBits(bs, code, len); |
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} |
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int bs_get_spritetrajectory(Bitstream * bs) |
/***************************************************************************** |
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{ |
* Local data |
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int i; |
****************************************************************************/ |
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for (i = 0; i < 12; i++) |
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{ |
static VLC intra_table[524032]; |
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if (BitstreamShowBits(bs, sprite_trajectory_len[i].len) == sprite_trajectory_len[i].code) |
static VLC inter_table[524032]; |
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{ |
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BitstreamSkip(bs, sprite_trajectory_len[i].len); |
static VLC DCT3Dintra[4096]; |
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return i; |
static VLC DCT3Dinter[4096]; |
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} |
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} |
/***************************************************************************** |
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return -1; |
* Vector Length Coding Initialization |
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} |
****************************************************************************/ |
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void |
void |
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init_vlc_tables(void) |
init_vlc_tables(void) |
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vlc[0] = intra_table; |
vlc[0] = intra_table; |
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vlc[1] = inter_table; |
vlc[1] = inter_table; |
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// generate encoding vlc lookup tables |
/* |
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// the lookup table idea is taken from the excellent fame project by Vivien Chapellier |
* Generate encoding vlc lookup tables |
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* the lookup table idea is taken from the excellent fame project |
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* by Vivien Chapellier |
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*/ |
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for (i = 0; i < 4; i++) { |
for (i = 0; i < 4; i++) { |
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intra = i % 2; |
intra = i % 2; |
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last = i / 2; |
last = i / 2; |
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DCT3D[0] = DCT3Dinter; |
DCT3D[0] = DCT3Dinter; |
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DCT3D[1] = DCT3Dintra; |
DCT3D[1] = DCT3Dintra; |
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/* init sprite_trajectory tables */ |
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/* even if GMC is not specified (it might be used later...) */ |
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sprite_trajectory_code[0+16384].code = 0; |
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sprite_trajectory_code[0+16384].len = 0; |
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for (k=0;k<14;k++) |
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{ |
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int limit = (1<<k); |
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for (i=-(2*limit-1); i<= -limit; i++) |
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{ |
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sprite_trajectory_code[i+16384].code = (2*limit-1)+i; |
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sprite_trajectory_code[i+16384].len = k+1; |
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} |
} |
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for (i=limit; i<= 2*limit-1; i++) |
/***************************************************************************** |
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{ |
* Local inlined functions for MB coding |
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sprite_trajectory_code[i+16384].code = i; |
****************************************************************************/ |
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sprite_trajectory_code[i+16384].len = k+1; |
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} |
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} |
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} |
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static __inline void |
static __inline void |
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CodeVector(Bitstream * bs, |
CodeVector(Bitstream * bs, |
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} |
} |
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static __inline void |
static __inline void |
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CodeCoeff(Bitstream * bs, |
CodeCoeff(Bitstream * bs, |
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const int16_t qcoeff[64], |
const int16_t qcoeff[64], |
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} |
} |
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/***************************************************************************** |
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* Local functions |
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****************************************************************************/ |
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static __inline void |
static void |
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CodeBlockIntra(const FRAMEINFO * const frame, |
CodeBlockIntra(const FRAMEINFO * frame, |
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const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
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int16_t qcoeff[6 * 64], |
int16_t qcoeff[6 * 64], |
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Bitstream * bs, |
Bitstream * bs, |
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dcc_tab[qcoeff[i * 64 + 0] + 255].len); |
dcc_tab[qcoeff[i * 64 + 0] + 255].len); |
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if (pMB->cbp & (1 << (5 - i))) { |
if (pMB->cbp & (1 << (5 - i))) { |
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const uint16_t *scan_table = |
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frame->global_flags & XVID_ALTERNATESCAN ? |
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scan_tables[2] : scan_tables[pMB->acpred_directions[i]]; |
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bits = BitstreamPos(bs); |
bits = BitstreamPos(bs); |
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CodeCoeff(bs, &qcoeff[i * 64], intra_table, scan_table, 1); |
CodeCoeff(bs, &qcoeff[i * 64], intra_table, |
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scan_tables[pMB->acpred_directions[i]], 1); |
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bits = BitstreamPos(bs) - bits; |
bits = BitstreamPos(bs) - bits; |
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pStat->iTextBits += bits; |
pStat->iTextBits += bits; |
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static void |
static void |
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CodeBlockInter(const FRAMEINFO * const frame, |
CodeBlockInter(const FRAMEINFO * frame, |
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const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
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int16_t qcoeff[6 * 64], |
int16_t qcoeff[6 * 64], |
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Bitstream * bs, |
Bitstream * bs, |
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BitstreamPutBits(bs, mcbpc_inter_tab[mcbpc].code, |
BitstreamPutBits(bs, mcbpc_inter_tab[mcbpc].code, |
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mcbpc_inter_tab[mcbpc].len); |
mcbpc_inter_tab[mcbpc].len); |
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if ( (frame->coding_type == S_VOP) && (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) ) |
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{ |
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/* decision on GMC is done in encoder.c now */ |
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BitstreamPutBit(bs, pMB->mcsel); // mcsel: '0'=local motion, '1'=GMC |
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} |
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// write cbpy |
// write cbpy |
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BitstreamPutBits(bs, cbpy_tab[cbpy].code, cbpy_tab[cbpy].len); |
BitstreamPutBits(bs, cbpy_tab[cbpy].code, cbpy_tab[cbpy].len); |
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if (frame->global_flags & XVID_INTERLACING) { |
if (frame->global_flags & XVID_INTERLACING) { |
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if (pMB->cbp) { |
if (pMB->cbp) { |
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BitstreamPutBit(bs, pMB->field_dct); |
BitstreamPutBit(bs, pMB->field_dct); |
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DPRINTF(DPRINTF_MB,"codep: field_dct: %i", pMB->field_dct); |
DEBUG1("codep: field_dct: ", pMB->field_dct); |
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} |
} |
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// if inter block, write field ME flag |
// if inter block, write field ME flag |
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if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) { |
if (pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q) { |
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BitstreamPutBit(bs, pMB->field_pred); |
BitstreamPutBit(bs, pMB->field_pred); |
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DPRINTF(DPRINTF_MB,"codep: field_pred: %i", pMB->field_pred); |
DEBUG1("codep: field_pred: ", pMB->field_pred); |
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// write field prediction references |
// write field prediction references |
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if (pMB->field_pred) { |
if (pMB->field_pred) { |
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} |
} |
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} |
} |
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} |
} |
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// code motion vector(s) if motion is local |
// code motion vector(s) |
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if (!pMB->mcsel) |
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for (i = 0; i < (pMB->mode == MODE_INTER4V ? 4 : 1); i++) { |
for (i = 0; i < (pMB->mode == MODE_INTER4V ? 4 : 1); i++) { |
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CodeVector(bs, pMB->pmvs[i].x, frame->fcode, pStat); |
CodeVector(bs, pMB->pmvs[i].x, frame->fcode, pStat); |
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CodeVector(bs, pMB->pmvs[i].y, frame->fcode, pStat); |
CodeVector(bs, pMB->pmvs[i].y, frame->fcode, pStat); |
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// code block coeffs |
// code block coeffs |
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for (i = 0; i < 6; i++) |
for (i = 0; i < 6; i++) |
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if (pMB->cbp & (1 << (5 - i))) |
if (pMB->cbp & (1 << (5 - i))) |
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{ |
CodeCoeff(bs, &qcoeff[i * 64], inter_table, scan_tables[0], 0); |
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const uint16_t *scan_table = |
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frame->global_flags & XVID_ALTERNATESCAN ? |
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scan_tables[2] : scan_tables[0]; |
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CodeCoeff(bs, &qcoeff[i * 64], inter_table, scan_table, 0); |
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} |
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bits = BitstreamPos(bs) - bits; |
bits = BitstreamPos(bs) - bits; |
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pStat->iTextBits += bits; |
pStat->iTextBits += bits; |
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} |
} |
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/***************************************************************************** |
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* Macro Block bitstream encoding functions |
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****************************************************************************/ |
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void |
void |
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MBCoding(const FRAMEINFO * const frame, |
MBCoding(const FRAMEINFO * frame, |
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MACROBLOCK * pMB, |
MACROBLOCK * pMB, |
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int16_t qcoeff[6 * 64], |
int16_t qcoeff[6 * 64], |
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Bitstream * bs, |
Bitstream * bs, |
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Statistics * pStat) |
Statistics * pStat) |
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{ |
{ |
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if (frame->coding_type != I_VOP) |
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BitstreamPutBit(bs, 0); // not_coded |
if (frame->coding_type == P_VOP) { |
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BitstreamPutBit(bs, 0); // coded |
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} |
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if (pMB->mode == MODE_INTRA || pMB->mode == MODE_INTRA_Q) |
if (pMB->mode == MODE_INTRA || pMB->mode == MODE_INTRA_Q) |
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CodeBlockIntra(frame, pMB, qcoeff, bs, pStat); |
CodeBlockIntra(frame, pMB, qcoeff, bs, pStat); |
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} |
} |
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/* |
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// moved to mbcoding.h so that in can be 'static __inline' |
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void |
void |
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MBSkip(Bitstream * bs) |
MBSkip(Bitstream * bs) |
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{ |
{ |
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BitstreamPutBit(bs, 1); // not coded |
BitstreamPutBit(bs, 1); // not coded |
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return; |
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} |
} |
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*/ |
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/*************************************************************** |
/*************************************************************** |
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* bframe encoding start |
* bframe encoding start |
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3 0001b forward mc+q dbquant, mvdf |
3 0001b forward mc+q dbquant, mvdf |
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*/ |
*/ |
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static __inline void |
void |
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put_bvop_mbtype(Bitstream * bs, |
put_bvop_mbtype(Bitstream * bs, |
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int value) |
int value) |
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{ |
{ |
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switch (value) { |
switch (value) { |
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case MODE_FORWARD: |
case 0: |
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BitstreamPutBit(bs, 1); |
460 |
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return; |
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case 1: |
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BitstreamPutBit(bs, 0); |
BitstreamPutBit(bs, 0); |
464 |
case MODE_BACKWARD: |
BitstreamPutBit(bs, 1); |
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return; |
466 |
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467 |
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case 2: |
468 |
BitstreamPutBit(bs, 0); |
BitstreamPutBit(bs, 0); |
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case MODE_INTERPOLATE: |
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BitstreamPutBit(bs, 0); |
BitstreamPutBit(bs, 0); |
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case MODE_DIRECT: |
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BitstreamPutBit(bs, 1); |
BitstreamPutBit(bs, 1); |
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default: |
return; |
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break; |
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case 3: |
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BitstreamPutBit(bs, 0); |
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BitstreamPutBit(bs, 0); |
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BitstreamPutBit(bs, 0); |
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BitstreamPutBit(bs, 1); |
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return; |
479 |
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480 |
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default:; // invalid! |
481 |
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} |
} |
483 |
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484 |
} |
} |
485 |
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486 |
/* |
/* |
490 |
+2 11b |
+2 11b |
491 |
*/ |
*/ |
492 |
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493 |
static __inline void |
void |
494 |
put_bvop_dbquant(Bitstream * bs, |
put_bvop_dbquant(Bitstream * bs, |
495 |
int value) |
int value) |
496 |
{ |
{ |
513 |
} |
} |
514 |
} |
} |
515 |
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516 |
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#if 0 |
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517 |
void |
void |
518 |
MBCodingBVOP(const MACROBLOCK * mb, |
MBCodingBVOP(const MACROBLOCK * mb, |
519 |
const int16_t qcoeff[6 * 64], |
const int16_t qcoeff[6 * 64], |
520 |
const int32_t fcode, |
const int32_t fcode, |
521 |
const int32_t bcode, |
const int32_t bcode, |
522 |
Bitstream * bs, |
Bitstream * bs, |
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Statistics * pStat, |
Statistics * pStat) |
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int direction) |
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{ |
{ |
525 |
int vcode = fcode; |
int i; |
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unsigned int i; |
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526 |
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527 |
/* ------------------------------------------------------------------ |
/* ------------------------------------------------------------------ |
528 |
when a block is skipped it is decoded DIRECT(0,0) |
when a block is skipped it is decoded DIRECT(0,0) |
552 |
put_bvop_dbquant(bs, 0); // todo: mb->dquant = 0 |
put_bvop_dbquant(bs, 0); // todo: mb->dquant = 0 |
553 |
} |
} |
554 |
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switch (mb->mode) { |
if (mb->mode == MODE_INTERPOLATE || mb->mode == MODE_FORWARD) { |
556 |
case MODE_INTERPOLATE: |
CodeVector(bs, mb->pmvs[0].x, fcode, pStat); |
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CodeVector(bs, mb->pmvs[1].x, vcode, pStat); //forward vector of interpolate mode |
CodeVector(bs, mb->pmvs[0].y, fcode, pStat); |
558 |
CodeVector(bs, mb->pmvs[1].y, vcode, pStat); |
} |
559 |
case MODE_BACKWARD: |
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560 |
vcode = bcode; |
if (mb->mode == MODE_INTERPOLATE || mb->mode == MODE_BACKWARD) { |
561 |
case MODE_FORWARD: |
CodeVector(bs, mb->b_pmvs[0].x, bcode, pStat); |
562 |
CodeVector(bs, mb->pmvs[0].x, vcode, pStat); |
CodeVector(bs, mb->b_pmvs[0].y, bcode, pStat); |
563 |
CodeVector(bs, mb->pmvs[0].y, vcode, pStat); |
} |
564 |
break; |
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565 |
case MODE_DIRECT: |
if (mb->mode == MODE_DIRECT) { |
566 |
CodeVector(bs, mb->pmvs[3].x, 1, pStat); // fcode is always 1 for delta vector |
CodeVector(bs, mb->deltamv.x, 1, pStat); /* fcode is always 1 for delta vector */ |
567 |
CodeVector(bs, mb->pmvs[3].y, 1, pStat); // prediction is always (0,0) |
CodeVector(bs, mb->deltamv.y, 1, pStat); /* prediction is always (0,0) */ |
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default: break; |
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568 |
} |
} |
569 |
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570 |
for (i = 0; i < 6; i++) { |
for (i = 0; i < 6; i++) { |
571 |
if (mb->cbp & (1 << (5 - i))) { |
if (mb->cbp & (1 << (5 - i))) { |
572 |
CodeCoeff(bs, &qcoeff[i * 64], inter_table, scan_tables[direction], 0); |
CodeCoeff(bs, &qcoeff[i * 64], inter_table, scan_tables[0], 0); |
573 |
} |
} |
574 |
} |
} |
575 |
} |
} |
576 |
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#endif |
577 |
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578 |
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579 |
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/***************************************************************************** |
580 |
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* decoding stuff starts here |
581 |
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****************************************************************************/ |
582 |
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583 |
/*************************************************************** |
/* |
584 |
* decoding stuff starts here * |
* For IVOP addbits == 0 |
585 |
***************************************************************/ |
* For PVOP addbits == fcode - 1 |
586 |
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* For BVOP addbits == max(fcode,bcode) - 1 |
587 |
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* returns true or false |
588 |
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*/ |
589 |
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// for IVOP addbits == 0 |
|
|
// for PVOP addbits == fcode - 1 |
|
|
// for BVOP addbits == max(fcode,bcode) - 1 |
|
|
// returns true or false |
|
590 |
int |
int |
591 |
check_resync_marker(Bitstream * bs, int addbits) |
check_resync_marker(Bitstream * bs, int addbits) |
592 |
{ |
{ |
628 |
|
|
629 |
uint32_t index; |
uint32_t index; |
630 |
|
|
631 |
index = MIN(BitstreamShowBits(bs, 9), 256); |
index = CLIP(BitstreamShowBits(bs, 9), 256); |
632 |
|
|
633 |
BitstreamSkip(bs, mcbpc_inter_table[index].len); |
BitstreamSkip(bs, mcbpc_inter_table[index].len); |
634 |
|
|
654 |
|
|
655 |
} |
} |
656 |
|
|
657 |
static __inline int |
int |
658 |
get_mv_data(Bitstream * bs) |
get_mv_data(Bitstream * bs) |
659 |
{ |
{ |
660 |
|
|
763 |
|
|
764 |
} |
} |
765 |
|
|
766 |
|
/***************************************************************************** |
767 |
|
* Local inlined function to "decode" written vlc codes |
768 |
|
****************************************************************************/ |
769 |
|
|
770 |
|
static __inline int |
771 |
|
get_coeff(Bitstream * bs, |
772 |
|
int *run, |
773 |
|
int *last, |
774 |
|
int intra, |
775 |
|
int short_video_header) |
776 |
|
{ |
777 |
|
|
778 |
|
uint32_t mode; |
779 |
|
const VLC *tab; |
780 |
|
int32_t level; |
781 |
|
|
782 |
|
if (short_video_header) // inter-VLCs will be used for both intra and inter blocks |
783 |
|
intra = 0; |
784 |
|
|
785 |
|
tab = &DCT3D[intra][BitstreamShowBits(bs, 12)]; |
786 |
|
|
787 |
|
if (tab->code == -1) |
788 |
|
goto error; |
789 |
|
|
790 |
|
BitstreamSkip(bs, tab->len); |
791 |
|
|
792 |
|
if (tab->code != ESCAPE) { |
793 |
|
if (!intra) { |
794 |
|
*run = (tab->code >> 4) & 255; |
795 |
|
level = tab->code & 15; |
796 |
|
*last = (tab->code >> 12) & 1; |
797 |
|
} else { |
798 |
|
*run = (tab->code >> 8) & 255; |
799 |
|
level = tab->code & 255; |
800 |
|
*last = (tab->code >> 16) & 1; |
801 |
|
} |
802 |
|
return BitstreamGetBit(bs) ? -level : level; |
803 |
|
} |
804 |
|
|
805 |
|
if (short_video_header) { |
806 |
|
// escape mode 4 - H.263 type, only used if short_video_header = 1 |
807 |
|
*last = BitstreamGetBit(bs); |
808 |
|
*run = BitstreamGetBits(bs, 6); |
809 |
|
level = BitstreamGetBits(bs, 8); |
810 |
|
|
811 |
|
if (level == 0 || level == 128) |
812 |
|
DEBUG1("Illegal LEVEL for ESCAPE mode 4:", level); |
813 |
|
|
814 |
|
return (level >= 128 ? -(256 - level) : level); |
815 |
|
} |
816 |
|
|
817 |
|
mode = BitstreamShowBits(bs, 2); |
818 |
|
|
819 |
|
if (mode < 3) { |
820 |
|
BitstreamSkip(bs, (mode == 2) ? 2 : 1); |
821 |
|
|
822 |
|
tab = &DCT3D[intra][BitstreamShowBits(bs, 12)]; |
823 |
|
if (tab->code == -1) |
824 |
|
goto error; |
825 |
|
|
826 |
|
BitstreamSkip(bs, tab->len); |
827 |
|
|
828 |
|
if (!intra) { |
829 |
|
*run = (tab->code >> 4) & 255; |
830 |
|
level = tab->code & 15; |
831 |
|
*last = (tab->code >> 12) & 1; |
832 |
|
} else { |
833 |
|
*run = (tab->code >> 8) & 255; |
834 |
|
level = tab->code & 255; |
835 |
|
*last = (tab->code >> 16) & 1; |
836 |
|
} |
837 |
|
|
838 |
|
if (mode < 2) // first escape mode, level is offset |
839 |
|
level += max_level[*last + (!intra << 1)][*run]; // need to add back the max level |
840 |
|
else if (mode == 2) // second escape mode, run is offset |
841 |
|
*run += max_run[*last + (!intra << 1)][level] + 1; |
842 |
|
|
843 |
|
return BitstreamGetBit(bs) ? -level : level; |
844 |
|
} |
845 |
|
// third escape mode - fixed length codes |
846 |
|
BitstreamSkip(bs, 2); |
847 |
|
*last = BitstreamGetBits(bs, 1); |
848 |
|
*run = BitstreamGetBits(bs, 6); |
849 |
|
BitstreamSkip(bs, 1); // marker |
850 |
|
level = BitstreamGetBits(bs, 12); |
851 |
|
BitstreamSkip(bs, 1); // marker |
852 |
|
|
853 |
|
return (level & 0x800) ? (level | (-1 ^ 0xfff)) : level; |
854 |
|
|
855 |
|
error: |
856 |
|
*run = VLC_ERROR; |
857 |
|
return 0; |
858 |
|
|
859 |
|
} |
860 |
|
|
861 |
|
/***************************************************************************** |
862 |
|
* MB reading functions |
863 |
|
****************************************************************************/ |
864 |
|
|
865 |
void |
void |
866 |
get_intra_block(Bitstream * bs, |
get_intra_block(Bitstream * bs, |
867 |
int16_t * block, |
int16_t * block, |
870 |
{ |
{ |
871 |
|
|
872 |
const uint16_t *scan = scan_tables[direction]; |
const uint16_t *scan = scan_tables[direction]; |
873 |
int level, run, last; |
int level; |
874 |
|
int run; |
875 |
|
int last; |
876 |
|
|
877 |
do { |
do { |
878 |
level = get_coeff(bs, &run, &last, 1, 0); |
level = get_coeff(bs, &run, &last, 1, 0); |
879 |
if (run == -1) { |
if (run == -1) { |
880 |
DPRINTF(DPRINTF_ERROR,"fatal: invalid run"); |
DEBUG("fatal: invalid run"); |
881 |
break; |
break; |
882 |
} |
} |
883 |
coeff += run; |
coeff += run; |
886 |
DPRINTF(DPRINTF_COEFF,"block[%i] %i", scan[coeff], level); |
DPRINTF(DPRINTF_COEFF,"block[%i] %i", scan[coeff], level); |
887 |
//DPRINTF(DPRINTF_COEFF,"block[%i] %i %08x", scan[coeff], level, BitstreamShowBits(bs, 32)); |
//DPRINTF(DPRINTF_COEFF,"block[%i] %i %08x", scan[coeff], level, BitstreamShowBits(bs, 32)); |
888 |
|
|
889 |
if (level < -2047 || level > 2047) { |
if (level < -127 || level > 127) { |
890 |
DPRINTF(DPRINTF_ERROR,"warning: intra_overflow %i", level); |
DEBUG1("warning: intra_overflow", level); |
891 |
} |
} |
892 |
coeff++; |
coeff++; |
893 |
} while (!last); |
} while (!last); |
896 |
|
|
897 |
void |
void |
898 |
get_inter_block(Bitstream * bs, |
get_inter_block(Bitstream * bs, |
899 |
int16_t * block, |
int16_t * block) |
|
int direction) |
|
900 |
{ |
{ |
901 |
|
|
902 |
const uint16_t *scan = scan_tables[direction]; |
const uint16_t *scan = scan_tables[0]; |
903 |
int p; |
int p; |
904 |
int level; |
int level; |
905 |
int run; |
int run; |
909 |
do { |
do { |
910 |
level = get_coeff(bs, &run, &last, 0, 0); |
level = get_coeff(bs, &run, &last, 0, 0); |
911 |
if (run == -1) { |
if (run == -1) { |
912 |
DPRINTF(DPRINTF_ERROR,"fatal: invalid run"); |
DEBUG("fatal: invalid run"); |
913 |
break; |
break; |
914 |
} |
} |
915 |
p += run; |
p += run; |
919 |
DPRINTF(DPRINTF_COEFF,"block[%i] %i", scan[p], level); |
DPRINTF(DPRINTF_COEFF,"block[%i] %i", scan[p], level); |
920 |
// DPRINTF(DPRINTF_COEFF,"block[%i] %i %08x", scan[p], level, BitstreamShowBits(bs, 32)); |
// DPRINTF(DPRINTF_COEFF,"block[%i] %i %08x", scan[p], level, BitstreamShowBits(bs, 32)); |
921 |
|
|
922 |
if (level < -2047 || level > 2047) { |
if (level < -127 || level > 127) { |
923 |
DPRINTF(DPRINTF_ERROR,"warning: inter overflow %i", level); |
DEBUG1("warning: inter_overflow", level); |
924 |
} |
} |
925 |
p++; |
p++; |
926 |
} while (!last); |
} while (!last); |