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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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* * |
* - MB Transfert/Quantization 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) 2001-2003 Peter Ross <pross@xvid.org> |
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* software module in hardware or software products are advised that its * |
* 2001-2003 Michael Militzer <isibaar@xvid.org> |
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* use may infringe existing patents or copyrights, and any such use * |
* 2003 Edouard Gomez <ed.gomez@free.fr> |
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* would be at such party's own risk. The original developer of this * |
* |
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* software module and his/her company, and subsequent editors and their * |
* This program is free software ; you can redistribute it and/or modify |
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* companies, will have no liability for use of this software or * |
* it under the terms of the GNU General Public License as published by |
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* modifications or derivatives thereof. * |
* the Free Software Foundation ; either version 2 of the License, or |
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* * |
* (at your option) any later version. |
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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 * |
* This program is distributed in the hope that it will be useful, |
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* the Free Software Foundation; either version 2 of the License, or * |
* but WITHOUT ANY WARRANTY ; without even the implied warranty of |
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* (at your option) any later version. * |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* * |
* GNU General Public License for more details. |
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* XviD is distributed in the hope that it will be useful, but * |
* |
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* WITHOUT ANY WARRANTY; without even the implied warranty of * |
* You should have received a copy of the GNU General Public License |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
* along with this program ; if not, write to the Free Software |
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* GNU General Public License for more details. * |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* * |
* |
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* You should have received a copy of the GNU General Public License * |
* $Id$ |
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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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******************************************************************************/ |
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/****************************************************************************** |
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* * |
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* mbtransquant.c * |
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* * |
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* Copyright (C) 2001 - Peter Ross <pross@cs.rmit.edu.au> * |
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* Copyright (C) 2001 - 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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* 29.03.2002 interlacing speedup - used transfer strides instead of * |
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* manual field-to-frame conversion * |
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* 26.03.2002 interlacing support - moved transfers outside loops * |
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* 22.12.2001 get_dc_scaler() moved to common.h * |
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* 19.11.2001 introduced coefficient thresholding (Isibaar) * |
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* 17.11.2001 initial version * |
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* * |
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******************************************************************************/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
#include <string.h> |
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#include "../portab.h" |
#include "../portab.h" |
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#include "../global.h" |
#include "../global.h" |
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#include "mem_transfer.h" |
#include "mem_transfer.h" |
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#include "timer.h" |
#include "timer.h" |
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#include "../bitstream/mbcoding.h" |
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#include "../bitstream/zigzag.h" |
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#include "../dct/fdct.h" |
#include "../dct/fdct.h" |
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#include "../dct/idct.h" |
#include "../dct/idct.h" |
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#include "../quant/quant_mpeg4.h" |
#include "../quant/quant.h" |
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#include "../quant/quant_h263.h" |
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#include "../encoder.h" |
#include "../encoder.h" |
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#include "../image/reduced.h" |
#include "../quant/quant_matrix.h" |
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MBFIELDTEST_PTR MBFieldTest; |
MBFIELDTEST_PTR MBFieldTest; |
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#define TOOSMALL_LIMIT 1 /* skip blocks having a coefficient sum below this value */ |
/* |
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* Skip blocks having a coefficient sum below this value. This value will be |
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* corrected according to the MB quantizer to avoid artifacts for quant==1 |
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*/ |
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#define PVOP_TOOSMALL_LIMIT 1 |
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#define BVOP_TOOSMALL_LIMIT 3 |
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/***************************************************************************** |
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* Local functions |
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****************************************************************************/ |
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/* permute block and return field dct choice */ |
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static __inline uint32_t |
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MBDecideFieldDCT(int16_t data[6 * 64]) |
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{ |
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uint32_t field = MBFieldTest(data); |
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if (field) |
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MBFrameToField(data); |
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return field; |
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} |
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/* Performs Forward DCT on all blocks */ |
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static __inline void |
static __inline void |
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MBfDCT(int16_t data[6 * 64]) |
MBfDCT(const MBParam * const pParam, |
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const FRAMEINFO * const frame, |
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MACROBLOCK * const pMB, |
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uint32_t x_pos, |
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uint32_t y_pos, |
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int16_t data[6 * 64]) |
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{ |
{ |
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/* Handles interlacing */ |
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start_timer(); |
start_timer(); |
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fdct(&data[0 * 64]); |
pMB->field_dct = 0; |
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fdct(&data[1 * 64]); |
if ((frame->vol_flags & XVID_VOL_INTERLACING) && |
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fdct(&data[2 * 64]); |
(x_pos>0) && (x_pos<pParam->mb_width-1) && |
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fdct(&data[3 * 64]); |
(y_pos>0) && (y_pos<pParam->mb_height-1)) { |
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fdct(&data[4 * 64]); |
pMB->field_dct = MBDecideFieldDCT(data); |
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fdct(&data[5 * 64]); |
} |
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stop_interlacing_timer(); |
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/* Perform DCT */ |
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start_timer(); |
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fdct((short * const)&data[0 * 64]); |
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fdct((short * const)&data[1 * 64]); |
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fdct((short * const)&data[2 * 64]); |
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fdct((short * const)&data[3 * 64]); |
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fdct((short * const)&data[4 * 64]); |
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fdct((short * const)&data[5 * 64]); |
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stop_dct_timer(); |
stop_dct_timer(); |
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} |
} |
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/* Performs Inverse DCT on all blocks */ |
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static __inline void |
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MBiDCT(int16_t data[6 * 64], |
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const uint8_t cbp) |
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{ |
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start_timer(); |
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if(cbp & (1 << (5 - 0))) idct((short * const)&data[0 * 64]); |
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if(cbp & (1 << (5 - 1))) idct((short * const)&data[1 * 64]); |
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if(cbp & (1 << (5 - 2))) idct((short * const)&data[2 * 64]); |
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if(cbp & (1 << (5 - 3))) idct((short * const)&data[3 * 64]); |
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if(cbp & (1 << (5 - 4))) idct((short * const)&data[4 * 64]); |
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if(cbp & (1 << (5 - 5))) idct((short * const)&data[5 * 64]); |
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stop_idct_timer(); |
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} |
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static __inline uint32_t |
/* Quantize all blocks -- Intra mode */ |
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QuantizeInterBlock( int16_t qcoeff[64], |
static __inline void |
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const int16_t data[64], |
MBQuantIntra(const MBParam * pParam, |
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const uint32_t iQuant, |
const FRAMEINFO * const frame, |
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const uint32_t quant_type) |
const MACROBLOCK * pMB, |
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int16_t qcoeff[6 * 64], |
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int16_t data[6*64]) |
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{ |
{ |
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uint32_t sum; |
int scaler_lum, scaler_chr; |
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quant_intraFuncPtr quant; |
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start_timer(); |
/* check if quant matrices need to be re-initialized with new quant */ |
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if (quant_type == H263_QUANT) |
if (pParam->vol_flags & XVID_VOL_MPEGQUANT) { |
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sum = quant_inter(qcoeff, data, iQuant); |
if (pParam->last_quant_initialized_intra != pMB->quant) { |
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else |
init_intra_matrix(pParam->mpeg_quant_matrices, pMB->quant); |
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sum = quant4_inter(qcoeff, data, iQuant); |
} |
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quant = quant_mpeg_intra; |
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} else { |
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quant = quant_h263_intra; |
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} |
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scaler_lum = get_dc_scaler(pMB->quant, 1); |
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scaler_chr = get_dc_scaler(pMB->quant, 0); |
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/* Quantize the block */ |
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start_timer(); |
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quant(&data[0 * 64], &qcoeff[0 * 64], pMB->quant, scaler_lum, pParam->mpeg_quant_matrices); |
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quant(&data[1 * 64], &qcoeff[1 * 64], pMB->quant, scaler_lum, pParam->mpeg_quant_matrices); |
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quant(&data[2 * 64], &qcoeff[2 * 64], pMB->quant, scaler_lum, pParam->mpeg_quant_matrices); |
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quant(&data[3 * 64], &qcoeff[3 * 64], pMB->quant, scaler_lum, pParam->mpeg_quant_matrices); |
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quant(&data[4 * 64], &qcoeff[4 * 64], pMB->quant, scaler_chr, pParam->mpeg_quant_matrices); |
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quant(&data[5 * 64], &qcoeff[5 * 64], pMB->quant, scaler_chr, pParam->mpeg_quant_matrices); |
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stop_quant_timer(); |
stop_quant_timer(); |
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return sum; |
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} |
} |
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void |
/* DeQuantize all blocks -- Intra mode */ |
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MBTransQuantIntra(const MBParam * const pParam, |
static __inline void |
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FRAMEINFO * const frame, |
MBDeQuantIntra(const MBParam * pParam, |
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MACROBLOCK * const pMB, |
const int iQuant, |
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const uint32_t x_pos, |
int16_t qcoeff[6 * 64], |
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const uint32_t y_pos, |
int16_t data[6*64]) |
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{ |
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int mpeg; |
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int scaler_lum, scaler_chr; |
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quant_intraFuncPtr const dequant[2] = |
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{ |
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dequant_h263_intra, |
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dequant_mpeg_intra |
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}; |
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mpeg = !!(pParam->vol_flags & XVID_VOL_MPEGQUANT); |
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scaler_lum = get_dc_scaler(iQuant, 1); |
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scaler_chr = get_dc_scaler(iQuant, 0); |
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start_timer(); |
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dequant[mpeg](&qcoeff[0 * 64], &data[0 * 64], iQuant, scaler_lum, pParam->mpeg_quant_matrices); |
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dequant[mpeg](&qcoeff[1 * 64], &data[1 * 64], iQuant, scaler_lum, pParam->mpeg_quant_matrices); |
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dequant[mpeg](&qcoeff[2 * 64], &data[2 * 64], iQuant, scaler_lum, pParam->mpeg_quant_matrices); |
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dequant[mpeg](&qcoeff[3 * 64], &data[3 * 64], iQuant, scaler_lum, pParam->mpeg_quant_matrices); |
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dequant[mpeg](&qcoeff[4 * 64], &data[4 * 64], iQuant, scaler_chr, pParam->mpeg_quant_matrices); |
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dequant[mpeg](&qcoeff[5 * 64], &data[5 * 64], iQuant, scaler_chr, pParam->mpeg_quant_matrices); |
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stop_iquant_timer(); |
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} |
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static int |
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dct_quantize_trellis_c(int16_t *const Out, |
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const int16_t *const In, |
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int Q, |
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const uint16_t * const Zigzag, |
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const uint16_t * const QuantMatrix, |
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int Non_Zero, |
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int Sum, |
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int Lambda_Mod); |
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/* Quantize all blocks -- Inter mode */ |
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static __inline uint8_t |
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MBQuantInter(const MBParam * pParam, |
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const FRAMEINFO * const frame, |
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const MACROBLOCK * pMB, |
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int16_t data[6 * 64], |
int16_t data[6 * 64], |
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int16_t qcoeff[6 * 64]) |
int16_t qcoeff[6 * 64], |
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int bvop, |
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int limit) |
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{ |
{ |
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uint32_t stride = pParam->edged_width; |
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const uint32_t stride2 = stride / 2; |
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uint32_t next_block = stride * ((frame->global_flags & XVID_REDUCED)?16:8); |
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int i; |
int i; |
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const uint32_t iQuant = pMB->quant; |
uint8_t cbp = 0; |
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uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
int sum; |
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const IMAGE * const pCurrent = &frame->image; |
int code_block, mpeg; |
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quant_interFuncPtr const quant[2] = |
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{ |
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quant_h263_inter, |
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quant_mpeg_inter |
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}; |
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mpeg = !!(pParam->vol_flags & XVID_VOL_MPEGQUANT); |
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for (i = 0; i < 6; i++) { |
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/* Quantize the block */ |
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start_timer(); |
start_timer(); |
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if ((frame->global_flags & XVID_REDUCED)) |
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sum = quant[mpeg](&qcoeff[i*64], &data[i*64], pMB->quant, pParam->mpeg_quant_matrices); |
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if(sum && (pMB->quant > 2) && (frame->vop_flags & XVID_VOP_TRELLISQUANT)) { |
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const uint16_t *matrix; |
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const static uint16_t h263matrix[] = |
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{ |
{ |
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pY_Cur = pCurrent->y + (y_pos << 5) * stride + (x_pos << 5); |
16, 16, 16, 16, 16, 16, 16, 16, |
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pU_Cur = pCurrent->u + (y_pos << 4) * stride2 + (x_pos << 4); |
16, 16, 16, 16, 16, 16, 16, 16, |
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pV_Cur = pCurrent->v + (y_pos << 4) * stride2 + (x_pos << 4); |
16, 16, 16, 16, 16, 16, 16, 16, |
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16, 16, 16, 16, 16, 16, 16, 16, |
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filter_18x18_to_8x8(&data[0 * 64], pY_Cur, stride); |
16, 16, 16, 16, 16, 16, 16, 16, |
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filter_18x18_to_8x8(&data[1 * 64], pY_Cur + 16, stride); |
16, 16, 16, 16, 16, 16, 16, 16, |
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filter_18x18_to_8x8(&data[2 * 64], pY_Cur + next_block, stride); |
16, 16, 16, 16, 16, 16, 16, 16, |
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filter_18x18_to_8x8(&data[3 * 64], pY_Cur + next_block + 16, stride); |
16, 16, 16, 16, 16, 16, 16, 16 |
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filter_18x18_to_8x8(&data[4 * 64], pU_Cur, stride2); |
}; |
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filter_18x18_to_8x8(&data[5 * 64], pV_Cur, stride2); |
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matrix = (mpeg)?get_inter_matrix(pParam->mpeg_quant_matrices):h263matrix; |
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sum = dct_quantize_trellis_c(&qcoeff[i*64], &data[i*64], |
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pMB->quant, &scan_tables[0][0], |
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matrix, |
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63, |
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sum, |
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pMB->lambda[i]); |
| 244 |
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} |
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stop_quant_timer(); |
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/* |
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* We code the block if the sum is higher than the limit and if the first |
| 249 |
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* two AC coefficients in zig zag order are not zero. |
| 250 |
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*/ |
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code_block = 0; |
| 252 |
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if ((sum >= limit) || (qcoeff[i*64+1] != 0) || (qcoeff[i*64+8] != 0)) { |
| 253 |
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code_block = 1; |
| 254 |
} else { |
} else { |
| 255 |
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if (bvop && (pMB->mode == MODE_DIRECT || pMB->mode == MODE_DIRECT_NO4V)) { |
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/* dark blocks prevention for direct mode */ |
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if ((qcoeff[i*64] < -1) || (qcoeff[i*64] > 0)) |
| 259 |
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code_block = 1; |
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} else { |
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/* not direct mode */ |
| 262 |
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if (qcoeff[i*64] != 0) |
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code_block = 1; |
| 264 |
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} |
| 265 |
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} |
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/* Set the corresponding cbp bit */ |
| 268 |
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cbp |= code_block << (5 - i); |
| 269 |
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} |
| 270 |
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| 271 |
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return(cbp); |
| 272 |
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} |
| 273 |
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/* DeQuantize all blocks -- Inter mode */ |
| 275 |
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static __inline void |
| 276 |
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MBDeQuantInter(const MBParam * pParam, |
| 277 |
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const int iQuant, |
| 278 |
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int16_t data[6 * 64], |
| 279 |
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int16_t qcoeff[6 * 64], |
| 280 |
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const uint8_t cbp) |
| 281 |
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{ |
| 282 |
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int mpeg; |
| 283 |
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quant_interFuncPtr const dequant[2] = |
| 285 |
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{ |
| 286 |
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dequant_h263_inter, |
| 287 |
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dequant_mpeg_inter |
| 288 |
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}; |
| 289 |
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| 290 |
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mpeg = !!(pParam->vol_flags & XVID_VOL_MPEGQUANT); |
| 291 |
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| 292 |
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start_timer(); |
| 293 |
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if(cbp & (1 << (5 - 0))) dequant[mpeg](&data[0 * 64], &qcoeff[0 * 64], iQuant, pParam->mpeg_quant_matrices); |
| 294 |
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if(cbp & (1 << (5 - 1))) dequant[mpeg](&data[1 * 64], &qcoeff[1 * 64], iQuant, pParam->mpeg_quant_matrices); |
| 295 |
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if(cbp & (1 << (5 - 2))) dequant[mpeg](&data[2 * 64], &qcoeff[2 * 64], iQuant, pParam->mpeg_quant_matrices); |
| 296 |
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if(cbp & (1 << (5 - 3))) dequant[mpeg](&data[3 * 64], &qcoeff[3 * 64], iQuant, pParam->mpeg_quant_matrices); |
| 297 |
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if(cbp & (1 << (5 - 4))) dequant[mpeg](&data[4 * 64], &qcoeff[4 * 64], iQuant, pParam->mpeg_quant_matrices); |
| 298 |
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if(cbp & (1 << (5 - 5))) dequant[mpeg](&data[5 * 64], &qcoeff[5 * 64], iQuant, pParam->mpeg_quant_matrices); |
| 299 |
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stop_iquant_timer(); |
| 300 |
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} |
| 301 |
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| 302 |
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typedef void (transfer_operation_8to16_t) (int16_t *Dst, const uint8_t *Src, int BpS); |
| 303 |
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typedef void (transfer_operation_16to8_t) (uint8_t *Dst, const int16_t *Src, int BpS); |
| 304 |
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|
| 305 |
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| 306 |
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static __inline void |
| 307 |
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MBTrans8to16(const MBParam * const pParam, |
| 308 |
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const FRAMEINFO * const frame, |
| 309 |
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const MACROBLOCK * const pMB, |
| 310 |
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const uint32_t x_pos, |
| 311 |
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const uint32_t y_pos, |
| 312 |
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int16_t data[6 * 64]) |
| 313 |
|
{ |
| 314 |
|
uint32_t stride = pParam->edged_width; |
| 315 |
|
uint32_t stride2 = stride / 2; |
| 316 |
|
uint32_t next_block = stride * 8; |
| 317 |
|
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
| 318 |
|
const IMAGE * const pCurrent = &frame->image; |
| 319 |
|
|
| 320 |
|
/* Image pointers */ |
| 321 |
pY_Cur = pCurrent->y + (y_pos << 4) * stride + (x_pos << 4); |
pY_Cur = pCurrent->y + (y_pos << 4) * stride + (x_pos << 4); |
| 322 |
pU_Cur = pCurrent->u + (y_pos << 3) * stride2 + (x_pos << 3); |
pU_Cur = pCurrent->u + (y_pos << 3) * stride2 + (x_pos << 3); |
| 323 |
pV_Cur = pCurrent->v + (y_pos << 3) * stride2 + (x_pos << 3); |
pV_Cur = pCurrent->v + (y_pos << 3) * stride2 + (x_pos << 3); |
| 324 |
|
|
| 325 |
|
/* Do the transfer */ |
| 326 |
|
start_timer(); |
| 327 |
transfer_8to16copy(&data[0 * 64], pY_Cur, stride); |
transfer_8to16copy(&data[0 * 64], pY_Cur, stride); |
| 328 |
transfer_8to16copy(&data[1 * 64], pY_Cur + 8, stride); |
transfer_8to16copy(&data[1 * 64], pY_Cur + 8, stride); |
| 329 |
transfer_8to16copy(&data[2 * 64], pY_Cur + next_block, stride); |
transfer_8to16copy(&data[2 * 64], pY_Cur + next_block, stride); |
| 330 |
transfer_8to16copy(&data[3 * 64], pY_Cur + next_block + 8, stride); |
transfer_8to16copy(&data[3 * 64], pY_Cur + next_block + 8, stride); |
| 331 |
transfer_8to16copy(&data[4 * 64], pU_Cur, stride2); |
transfer_8to16copy(&data[4 * 64], pU_Cur, stride2); |
| 332 |
transfer_8to16copy(&data[5 * 64], pV_Cur, stride2); |
transfer_8to16copy(&data[5 * 64], pV_Cur, stride2); |
|
} |
|
| 333 |
stop_transfer_timer(); |
stop_transfer_timer(); |
|
|
|
|
/* XXX: rrv+interlacing is buggy */ |
|
|
start_timer(); |
|
|
pMB->field_dct = 0; |
|
|
if ((frame->global_flags & XVID_INTERLACING) && |
|
|
(x_pos>0) && (x_pos<pParam->mb_width-1) && |
|
|
(y_pos>0) && (y_pos<pParam->mb_height-1)) { |
|
|
pMB->field_dct = MBDecideFieldDCT(data); |
|
| 334 |
} |
} |
|
stop_interlacing_timer(); |
|
|
|
|
|
MBfDCT(data); |
|
| 335 |
|
|
| 336 |
for (i = 0; i < 6; i++) { |
static __inline void |
| 337 |
const uint32_t iDcScaler = get_dc_scaler(iQuant, i < 4); |
MBTrans16to8(const MBParam * const pParam, |
| 338 |
|
const FRAMEINFO * const frame, |
| 339 |
start_timer(); |
const MACROBLOCK * const pMB, |
| 340 |
if (pParam->m_quant_type == H263_QUANT) |
const uint32_t x_pos, |
| 341 |
quant_intra(&qcoeff[i * 64], &data[i * 64], iQuant, iDcScaler); |
const uint32_t y_pos, |
| 342 |
else |
int16_t data[6 * 64], |
| 343 |
quant4_intra(&qcoeff[i * 64], &data[i * 64], iQuant, iDcScaler); |
const uint32_t add, /* Must be 1 or 0 */ |
| 344 |
stop_quant_timer(); |
const uint8_t cbp) |
| 345 |
|
{ |
| 346 |
|
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
| 347 |
|
uint32_t stride = pParam->edged_width; |
| 348 |
|
uint32_t stride2 = stride / 2; |
| 349 |
|
uint32_t next_block = stride * 8; |
| 350 |
|
const IMAGE * const pCurrent = &frame->image; |
| 351 |
|
|
| 352 |
/* speedup: dont decode when encoding only ivops */ |
/* Array of function pointers, indexed by [add] */ |
| 353 |
if (pParam->iMaxKeyInterval != 1 || pParam->max_bframes > 0) |
transfer_operation_16to8_t * const functions[2] = |
| 354 |
{ |
{ |
| 355 |
start_timer(); |
(transfer_operation_16to8_t*)transfer_16to8copy, |
| 356 |
if (pParam->m_quant_type == H263_QUANT) |
(transfer_operation_16to8_t*)transfer_16to8add, |
| 357 |
dequant_intra(&data[i * 64], &qcoeff[i * 64], iQuant, iDcScaler); |
}; |
|
else |
|
|
dequant4_intra(&data[i * 64], &qcoeff[i * 64], iQuant, iDcScaler); |
|
|
stop_iquant_timer(); |
|
| 358 |
|
|
| 359 |
start_timer(); |
transfer_operation_16to8_t *transfer_op = NULL; |
|
idct(&data[i * 64]); |
|
|
stop_idct_timer(); |
|
|
} |
|
|
} |
|
| 360 |
|
|
| 361 |
/* speedup: dont decode when encoding only ivops */ |
/* Image pointers */ |
| 362 |
if (pParam->iMaxKeyInterval != 1 || pParam->max_bframes > 0) |
pY_Cur = pCurrent->y + (y_pos << 4) * stride + (x_pos << 4); |
| 363 |
{ |
pU_Cur = pCurrent->u + (y_pos << 3) * stride2 + (x_pos << 3); |
| 364 |
|
pV_Cur = pCurrent->v + (y_pos << 3) * stride2 + (x_pos << 3); |
| 365 |
|
|
| 366 |
if (pMB->field_dct) { |
if (pMB->field_dct) { |
| 367 |
next_block = stride; |
next_block = stride; |
| 368 |
stride *= 2; |
stride *= 2; |
| 369 |
} |
} |
| 370 |
|
|
| 371 |
|
/* Operation function */ |
| 372 |
|
transfer_op = functions[add]; |
| 373 |
|
|
| 374 |
|
/* Do the operation */ |
| 375 |
start_timer(); |
start_timer(); |
| 376 |
if ((frame->global_flags & XVID_REDUCED)) { |
if (cbp&32) transfer_op(pY_Cur, &data[0 * 64], stride); |
| 377 |
copy_upsampled_8x8_16to8(pY_Cur, &data[0 * 64], stride); |
if (cbp&16) transfer_op(pY_Cur + 8, &data[1 * 64], stride); |
| 378 |
copy_upsampled_8x8_16to8(pY_Cur + 16, &data[1 * 64], stride); |
if (cbp& 8) transfer_op(pY_Cur + next_block, &data[2 * 64], stride); |
| 379 |
copy_upsampled_8x8_16to8(pY_Cur + next_block, &data[2 * 64], stride); |
if (cbp& 4) transfer_op(pY_Cur + next_block + 8, &data[3 * 64], stride); |
| 380 |
copy_upsampled_8x8_16to8(pY_Cur + next_block + 16, &data[3 * 64], stride); |
if (cbp& 2) transfer_op(pU_Cur, &data[4 * 64], stride2); |
| 381 |
copy_upsampled_8x8_16to8(pU_Cur, &data[4 * 64], stride2); |
if (cbp& 1) transfer_op(pV_Cur, &data[5 * 64], stride2); |
|
copy_upsampled_8x8_16to8(pV_Cur, &data[5 * 64], stride2); |
|
|
} else { |
|
|
transfer_16to8copy(pY_Cur, &data[0 * 64], stride); |
|
|
transfer_16to8copy(pY_Cur + 8, &data[1 * 64], stride); |
|
|
transfer_16to8copy(pY_Cur + next_block, &data[2 * 64], stride); |
|
|
transfer_16to8copy(pY_Cur + next_block + 8, &data[3 * 64], stride); |
|
|
transfer_16to8copy(pU_Cur, &data[4 * 64], stride2); |
|
|
transfer_16to8copy(pV_Cur, &data[5 * 64], stride2); |
|
|
} |
|
| 382 |
stop_transfer_timer(); |
stop_transfer_timer(); |
| 383 |
} |
} |
| 384 |
|
|
| 385 |
} |
/***************************************************************************** |
| 386 |
|
* Module functions |
| 387 |
|
****************************************************************************/ |
| 388 |
|
|
| 389 |
uint8_t |
void |
| 390 |
MBTransQuantInter(const MBParam * const pParam, |
MBTransQuantIntra(const MBParam * const pParam, |
| 391 |
FRAMEINFO * const frame, |
const FRAMEINFO * const frame, |
| 392 |
MACROBLOCK * const pMB, |
MACROBLOCK * const pMB, |
| 393 |
const uint32_t x_pos, |
const uint32_t x_pos, |
| 394 |
const uint32_t y_pos, |
const uint32_t y_pos, |
| 395 |
int16_t data[6 * 64], |
int16_t data[6 * 64], |
| 396 |
int16_t qcoeff[6 * 64]) |
int16_t qcoeff[6 * 64]) |
| 397 |
{ |
{ |
|
uint32_t stride = pParam->edged_width; |
|
|
const uint32_t stride2 = stride / 2; |
|
|
uint32_t next_block = stride * ((frame->global_flags & XVID_REDUCED)?16:8); |
|
|
int i; |
|
|
const uint32_t iQuant = pMB->quant; |
|
|
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
|
|
int cbp = 0; |
|
|
uint32_t sum; |
|
|
const IMAGE * const pCurrent = &frame->image; |
|
| 398 |
|
|
| 399 |
if ((frame->global_flags & XVID_REDUCED)) { |
/* Transfer data */ |
| 400 |
pY_Cur = pCurrent->y + (y_pos << 5) * stride + (x_pos << 5); |
MBTrans8to16(pParam, frame, pMB, x_pos, y_pos, data); |
|
pU_Cur = pCurrent->u + (y_pos << 4) * stride2 + (x_pos << 4); |
|
|
pV_Cur = pCurrent->v + (y_pos << 4) * stride2 + (x_pos << 4); |
|
|
} else { |
|
|
pY_Cur = pCurrent->y + (y_pos << 4) * stride + (x_pos << 4); |
|
|
pU_Cur = pCurrent->u + (y_pos << 3) * stride2 + (x_pos << 3); |
|
|
pV_Cur = pCurrent->v + (y_pos << 3) * stride2 + (x_pos << 3); |
|
|
} |
|
| 401 |
|
|
| 402 |
start_timer(); |
/* Perform DCT (and field decision) */ |
| 403 |
pMB->field_dct = 0; |
MBfDCT(pParam, frame, pMB, x_pos, y_pos, data); |
| 404 |
if ((frame->global_flags & XVID_INTERLACING) && |
|
| 405 |
(x_pos>0) && (x_pos<pParam->mb_width-1) && |
/* Quantize the block */ |
| 406 |
(y_pos>0) && (y_pos<pParam->mb_height-1)) { |
MBQuantIntra(pParam, frame, pMB, data, qcoeff); |
| 407 |
pMB->field_dct = MBDecideFieldDCT(data); |
|
| 408 |
|
/* DeQuantize the block */ |
| 409 |
|
MBDeQuantIntra(pParam, pMB->quant, data, qcoeff); |
| 410 |
|
|
| 411 |
|
/* Perform inverse DCT*/ |
| 412 |
|
MBiDCT(data, 0x3F); |
| 413 |
|
|
| 414 |
|
/* Transfer back the data -- Don't add data */ |
| 415 |
|
MBTrans16to8(pParam, frame, pMB, x_pos, y_pos, data, 0, 0x3F); |
| 416 |
} |
} |
|
stop_interlacing_timer(); |
|
| 417 |
|
|
|
MBfDCT(data); |
|
| 418 |
|
|
| 419 |
for (i = 0; i < 6; i++) { |
uint8_t |
| 420 |
const uint32_t limit = TOOSMALL_LIMIT + ((iQuant == 1) ? 1 : 0); |
MBTransQuantInter(const MBParam * const pParam, |
| 421 |
/* |
const FRAMEINFO * const frame, |
| 422 |
* no need to transfer 8->16-bit |
MACROBLOCK * const pMB, |
| 423 |
* (this is performed already in motion compensation) |
const uint32_t x_pos, |
| 424 |
*/ |
const uint32_t y_pos, |
| 425 |
|
int16_t data[6 * 64], |
| 426 |
|
int16_t qcoeff[6 * 64]) |
| 427 |
|
{ |
| 428 |
|
uint8_t cbp; |
| 429 |
|
uint32_t limit; |
| 430 |
|
|
| 431 |
sum = QuantizeInterBlock(&qcoeff[i * 64], &data[i * 64], iQuant, pParam->m_quant_type); |
/* There is no MBTrans8to16 for Inter block, that's done in motion compensation |
| 432 |
|
* already */ |
| 433 |
|
|
| 434 |
if (sum >= limit) { |
/* Perform DCT (and field decision) */ |
| 435 |
|
MBfDCT(pParam, frame, pMB, x_pos, y_pos, data); |
| 436 |
|
|
| 437 |
start_timer(); |
/* Set the limit threshold */ |
| 438 |
if (pParam->m_quant_type == H263_QUANT) |
limit = PVOP_TOOSMALL_LIMIT + ((pMB->quant == 1)? 1 : 0); |
|
dequant_inter(&data[i * 64], &qcoeff[i * 64], iQuant); |
|
|
else |
|
|
dequant4_inter(&data[i * 64], &qcoeff[i * 64], iQuant); |
|
|
stop_iquant_timer(); |
|
| 439 |
|
|
| 440 |
cbp |= 1 << (5 - i); |
if (frame->vop_flags & XVID_VOP_CARTOON) |
| 441 |
|
limit *= 3; |
| 442 |
|
|
| 443 |
start_timer(); |
/* Quantize the block */ |
| 444 |
idct(&data[i * 64]); |
cbp = MBQuantInter(pParam, frame, pMB, data, qcoeff, 0, limit); |
|
stop_idct_timer(); |
|
|
} |
|
|
} |
|
| 445 |
|
|
| 446 |
if (pMB->field_dct) { |
/* DeQuantize the block */ |
| 447 |
next_block = stride; |
MBDeQuantInter(pParam, pMB->quant, data, qcoeff, cbp); |
|
stride *= 2; |
|
|
} |
|
| 448 |
|
|
| 449 |
start_timer(); |
/* Perform inverse DCT*/ |
| 450 |
if ((frame->global_flags & XVID_REDUCED)) { |
MBiDCT(data, cbp); |
|
if (cbp & 32) |
|
|
add_upsampled_8x8_16to8(pY_Cur, &data[0 * 64], stride); |
|
|
if (cbp & 16) |
|
|
add_upsampled_8x8_16to8(pY_Cur + 16, &data[1 * 64], stride); |
|
|
if (cbp & 8) |
|
|
add_upsampled_8x8_16to8(pY_Cur + next_block, &data[2 * 64], stride); |
|
|
if (cbp & 4) |
|
|
add_upsampled_8x8_16to8(pY_Cur + 16 + next_block, &data[3 * 64], stride); |
|
|
if (cbp & 2) |
|
|
add_upsampled_8x8_16to8(pU_Cur, &data[4 * 64], stride2); |
|
|
if (cbp & 1) |
|
|
add_upsampled_8x8_16to8(pV_Cur, &data[5 * 64], stride2); |
|
|
} else { |
|
|
if (cbp & 32) |
|
|
transfer_16to8add(pY_Cur, &data[0 * 64], stride); |
|
|
if (cbp & 16) |
|
|
transfer_16to8add(pY_Cur + 8, &data[1 * 64], stride); |
|
|
if (cbp & 8) |
|
|
transfer_16to8add(pY_Cur + next_block, &data[2 * 64], stride); |
|
|
if (cbp & 4) |
|
|
transfer_16to8add(pY_Cur + next_block + 8, &data[3 * 64], stride); |
|
|
if (cbp & 2) |
|
|
transfer_16to8add(pU_Cur, &data[4 * 64], stride2); |
|
|
if (cbp & 1) |
|
|
transfer_16to8add(pV_Cur, &data[5 * 64], stride2); |
|
|
} |
|
|
stop_transfer_timer(); |
|
| 451 |
|
|
| 452 |
return (uint8_t) cbp; |
/* Transfer back the data -- Add the data */ |
| 453 |
|
MBTrans16to8(pParam, frame, pMB, x_pos, y_pos, data, 1, cbp); |
| 454 |
|
|
| 455 |
|
return(cbp); |
| 456 |
} |
} |
| 457 |
|
|
| 458 |
uint8_t |
uint8_t |
| 459 |
MBTransQuantInterBVOP(const MBParam * pParam, |
MBTransQuantInterBVOP(const MBParam * pParam, |
| 460 |
FRAMEINFO * frame, |
FRAMEINFO * frame, |
| 461 |
MACROBLOCK * pMB, |
MACROBLOCK * pMB, |
| 462 |
|
const uint32_t x_pos, |
| 463 |
|
const uint32_t y_pos, |
| 464 |
int16_t data[6 * 64], |
int16_t data[6 * 64], |
| 465 |
int16_t qcoeff[6 * 64]) |
int16_t qcoeff[6 * 64]) |
| 466 |
{ |
{ |
| 467 |
int cbp = 0; |
uint8_t cbp; |
| 468 |
int i; |
uint32_t limit; |
| 469 |
|
|
| 470 |
/* there is no MBTrans for Inter block, that's done in motion compensation already */ |
/* There is no MBTrans8to16 for Inter block, that's done in motion compensation |
| 471 |
|
* already */ |
| 472 |
|
|
| 473 |
start_timer(); |
/* Perform DCT (and field decision) */ |
| 474 |
pMB->field_dct = 0; |
MBfDCT(pParam, frame, pMB, x_pos, y_pos, data); |
|
if ((frame->global_flags & XVID_INTERLACING)) { |
|
|
pMB->field_dct = MBDecideFieldDCT(data); |
|
|
} |
|
|
stop_interlacing_timer(); |
|
| 475 |
|
|
| 476 |
MBfDCT(data); |
/* Set the limit threshold */ |
| 477 |
|
limit = BVOP_TOOSMALL_LIMIT; |
| 478 |
|
|
| 479 |
for (i = 0; i < 6; i++) { |
if (frame->vop_flags & XVID_VOP_CARTOON) |
| 480 |
int codedecision = 0; |
limit *= 2; |
| 481 |
|
|
| 482 |
int sum = QuantizeInterBlock(&qcoeff[i * 64], &data[i * 64], pMB->quant, pParam->m_quant_type); |
/* Quantize the block */ |
| 483 |
|
cbp = MBQuantInter(pParam, frame, pMB, data, qcoeff, 1, limit); |
| 484 |
|
|
| 485 |
if ((sum > 2) || (qcoeff[i*64+1] != 0) || (qcoeff[i*64+8] != 0) ) codedecision = 1; |
/* |
| 486 |
else { |
* History comment: |
| 487 |
if (pMB->mode == MODE_DIRECT || pMB->mode == MODE_DIRECT_NO4V) { |
* We don't have to DeQuant, iDCT and Transfer back data for B-frames. |
| 488 |
// dark blocks prevention for direct mode |
* |
| 489 |
if ( (qcoeff[i*64] < -1) || (qcoeff[i*64] > 0) ) codedecision = 1; |
* BUT some plugins require the rebuilt original frame to be passed so we |
| 490 |
} else |
* have to take care of that here |
| 491 |
if (qcoeff[i*64] != 0) codedecision = 1; // not direct mode |
*/ |
| 492 |
} |
if((pParam->plugin_flags & XVID_REQORIGINAL)) { |
| 493 |
|
|
| 494 |
if (codedecision) cbp |= 1 << (5 - i); |
/* DeQuantize the block */ |
| 495 |
} |
MBDeQuantInter(pParam, pMB->quant, data, qcoeff, cbp); |
| 496 |
|
|
| 497 |
/* we don't have to DeQuant, iDCT and Transfer back data for B-frames if we don't reconstruct this frame */ |
/* Perform inverse DCT*/ |
| 498 |
/* warning: reconstruction not supported yet */ |
MBiDCT(data, cbp); |
|
return (uint8_t) cbp; |
|
|
} |
|
| 499 |
|
|
| 500 |
/* permute block and return field dct choice */ |
/* Transfer back the data -- Add the data */ |
| 501 |
|
MBTrans16to8(pParam, frame, pMB, x_pos, y_pos, data, 1, cbp); |
| 502 |
static uint32_t |
} |
|
MBDecideFieldDCT(int16_t data[6 * 64]) |
|
|
{ |
|
|
const uint32_t field = MBFieldTest(data); |
|
|
if (field) MBFrameToField(data); |
|
| 503 |
|
|
| 504 |
return field; |
return(cbp); |
| 505 |
} |
} |
| 506 |
|
|
| 507 |
/* if sum(diff between field lines) < sum(diff between frame lines), use field dct */ |
/* if sum(diff between field lines) < sum(diff between frame lines), use field dct */ |
|
|
|
| 508 |
uint32_t |
uint32_t |
| 509 |
MBFieldTest_c(int16_t data[6 * 64]) |
MBFieldTest_c(int16_t data[6 * 64]) |
| 510 |
{ |
{ |
| 518 |
for (i = 0; i < 7; ++i) { |
for (i = 0; i < 7; ++i) { |
| 519 |
for (j = 0; j < 8; ++j) { |
for (j = 0; j < 8; ++j) { |
| 520 |
frame += |
frame += |
| 521 |
ABS(data[0 * 64 + (i + 1) * 8 + j] - data[0 * 64 + i * 8 + j]); |
abs(data[0 * 64 + (i + 1) * 8 + j] - data[0 * 64 + i * 8 + j]); |
| 522 |
frame += |
frame += |
| 523 |
ABS(data[1 * 64 + (i + 1) * 8 + j] - data[1 * 64 + i * 8 + j]); |
abs(data[1 * 64 + (i + 1) * 8 + j] - data[1 * 64 + i * 8 + j]); |
| 524 |
frame += |
frame += |
| 525 |
ABS(data[2 * 64 + (i + 1) * 8 + j] - data[2 * 64 + i * 8 + j]); |
abs(data[2 * 64 + (i + 1) * 8 + j] - data[2 * 64 + i * 8 + j]); |
| 526 |
frame += |
frame += |
| 527 |
ABS(data[3 * 64 + (i + 1) * 8 + j] - data[3 * 64 + i * 8 + j]); |
abs(data[3 * 64 + (i + 1) * 8 + j] - data[3 * 64 + i * 8 + j]); |
| 528 |
|
|
| 529 |
field += |
field += |
| 530 |
ABS(data[blocks[i + 1] + lines[i + 1] + j] - |
abs(data[blocks[i + 1] + lines[i + 1] + j] - |
| 531 |
data[blocks[i] + lines[i] + j]); |
data[blocks[i] + lines[i] + j]); |
| 532 |
field += |
field += |
| 533 |
ABS(data[blocks[i + 1] + lines[i + 1] + 8 + j] - |
abs(data[blocks[i + 1] + lines[i + 1] + 8 + j] - |
| 534 |
data[blocks[i] + lines[i] + 8 + j]); |
data[blocks[i] + lines[i] + 8 + j]); |
| 535 |
field += |
field += |
| 536 |
ABS(data[blocks[i + 1] + 64 + lines[i + 1] + j] - |
abs(data[blocks[i + 1] + 64 + lines[i + 1] + j] - |
| 537 |
data[blocks[i] + 64 + lines[i] + j]); |
data[blocks[i] + 64 + lines[i] + j]); |
| 538 |
field += |
field += |
| 539 |
ABS(data[blocks[i + 1] + 64 + lines[i + 1] + 8 + j] - |
abs(data[blocks[i + 1] + 64 + lines[i + 1] + 8 + j] - |
| 540 |
data[blocks[i] + 64 + lines[i] + 8 + j]); |
data[blocks[i] + 64 + lines[i] + 8 + j]); |
| 541 |
} |
} |
| 542 |
} |
} |
| 557 |
|
|
| 558 |
/* left blocks */ |
/* left blocks */ |
| 559 |
|
|
| 560 |
// 1=2, 2=4, 4=8, 8=1 |
/* 1=2, 2=4, 4=8, 8=1 */ |
| 561 |
MOVLINE(tmp, LINE(0, 1)); |
MOVLINE(tmp, LINE(0, 1)); |
| 562 |
MOVLINE(LINE(0, 1), LINE(0, 2)); |
MOVLINE(LINE(0, 1), LINE(0, 2)); |
| 563 |
MOVLINE(LINE(0, 2), LINE(0, 4)); |
MOVLINE(LINE(0, 2), LINE(0, 4)); |
| 564 |
MOVLINE(LINE(0, 4), LINE(2, 0)); |
MOVLINE(LINE(0, 4), LINE(2, 0)); |
| 565 |
MOVLINE(LINE(2, 0), tmp); |
MOVLINE(LINE(2, 0), tmp); |
| 566 |
|
|
| 567 |
// 3=6, 6=12, 12=9, 9=3 |
/* 3=6, 6=12, 12=9, 9=3 */ |
| 568 |
MOVLINE(tmp, LINE(0, 3)); |
MOVLINE(tmp, LINE(0, 3)); |
| 569 |
MOVLINE(LINE(0, 3), LINE(0, 6)); |
MOVLINE(LINE(0, 3), LINE(0, 6)); |
| 570 |
MOVLINE(LINE(0, 6), LINE(2, 4)); |
MOVLINE(LINE(0, 6), LINE(2, 4)); |
| 571 |
MOVLINE(LINE(2, 4), LINE(2, 1)); |
MOVLINE(LINE(2, 4), LINE(2, 1)); |
| 572 |
MOVLINE(LINE(2, 1), tmp); |
MOVLINE(LINE(2, 1), tmp); |
| 573 |
|
|
| 574 |
// 5=10, 10=5 |
/* 5=10, 10=5 */ |
| 575 |
MOVLINE(tmp, LINE(0, 5)); |
MOVLINE(tmp, LINE(0, 5)); |
| 576 |
MOVLINE(LINE(0, 5), LINE(2, 2)); |
MOVLINE(LINE(0, 5), LINE(2, 2)); |
| 577 |
MOVLINE(LINE(2, 2), tmp); |
MOVLINE(LINE(2, 2), tmp); |
| 578 |
|
|
| 579 |
// 7=14, 14=13, 13=11, 11=7 |
/* 7=14, 14=13, 13=11, 11=7 */ |
| 580 |
MOVLINE(tmp, LINE(0, 7)); |
MOVLINE(tmp, LINE(0, 7)); |
| 581 |
MOVLINE(LINE(0, 7), LINE(2, 6)); |
MOVLINE(LINE(0, 7), LINE(2, 6)); |
| 582 |
MOVLINE(LINE(2, 6), LINE(2, 5)); |
MOVLINE(LINE(2, 6), LINE(2, 5)); |
| 585 |
|
|
| 586 |
/* right blocks */ |
/* right blocks */ |
| 587 |
|
|
| 588 |
// 1=2, 2=4, 4=8, 8=1 |
/* 1=2, 2=4, 4=8, 8=1 */ |
| 589 |
MOVLINE(tmp, LINE(1, 1)); |
MOVLINE(tmp, LINE(1, 1)); |
| 590 |
MOVLINE(LINE(1, 1), LINE(1, 2)); |
MOVLINE(LINE(1, 1), LINE(1, 2)); |
| 591 |
MOVLINE(LINE(1, 2), LINE(1, 4)); |
MOVLINE(LINE(1, 2), LINE(1, 4)); |
| 592 |
MOVLINE(LINE(1, 4), LINE(3, 0)); |
MOVLINE(LINE(1, 4), LINE(3, 0)); |
| 593 |
MOVLINE(LINE(3, 0), tmp); |
MOVLINE(LINE(3, 0), tmp); |
| 594 |
|
|
| 595 |
// 3=6, 6=12, 12=9, 9=3 |
/* 3=6, 6=12, 12=9, 9=3 */ |
| 596 |
MOVLINE(tmp, LINE(1, 3)); |
MOVLINE(tmp, LINE(1, 3)); |
| 597 |
MOVLINE(LINE(1, 3), LINE(1, 6)); |
MOVLINE(LINE(1, 3), LINE(1, 6)); |
| 598 |
MOVLINE(LINE(1, 6), LINE(3, 4)); |
MOVLINE(LINE(1, 6), LINE(3, 4)); |
| 599 |
MOVLINE(LINE(3, 4), LINE(3, 1)); |
MOVLINE(LINE(3, 4), LINE(3, 1)); |
| 600 |
MOVLINE(LINE(3, 1), tmp); |
MOVLINE(LINE(3, 1), tmp); |
| 601 |
|
|
| 602 |
// 5=10, 10=5 |
/* 5=10, 10=5 */ |
| 603 |
MOVLINE(tmp, LINE(1, 5)); |
MOVLINE(tmp, LINE(1, 5)); |
| 604 |
MOVLINE(LINE(1, 5), LINE(3, 2)); |
MOVLINE(LINE(1, 5), LINE(3, 2)); |
| 605 |
MOVLINE(LINE(3, 2), tmp); |
MOVLINE(LINE(3, 2), tmp); |
| 606 |
|
|
| 607 |
// 7=14, 14=13, 13=11, 11=7 |
/* 7=14, 14=13, 13=11, 11=7 */ |
| 608 |
MOVLINE(tmp, LINE(1, 7)); |
MOVLINE(tmp, LINE(1, 7)); |
| 609 |
MOVLINE(LINE(1, 7), LINE(3, 6)); |
MOVLINE(LINE(1, 7), LINE(3, 6)); |
| 610 |
MOVLINE(LINE(3, 6), LINE(3, 5)); |
MOVLINE(LINE(3, 6), LINE(3, 5)); |
| 611 |
MOVLINE(LINE(3, 5), LINE(3, 3)); |
MOVLINE(LINE(3, 5), LINE(3, 3)); |
| 612 |
MOVLINE(LINE(3, 3), tmp); |
MOVLINE(LINE(3, 3), tmp); |
| 613 |
} |
} |
| 614 |
|
|
| 615 |
|
/***************************************************************************** |
| 616 |
|
* Trellis based R-D optimal quantization |
| 617 |
|
* |
| 618 |
|
* Trellis Quant code (C) 2003 Pascal Massimino skal(at)planet-d.net |
| 619 |
|
* |
| 620 |
|
****************************************************************************/ |
| 621 |
|
|
| 622 |
|
/*---------------------------------------------------------------------------- |
| 623 |
|
* |
| 624 |
|
* Trellis-Based quantization |
| 625 |
|
* |
| 626 |
|
* So far I understand this paper: |
| 627 |
|
* |
| 628 |
|
* "Trellis-Based R-D Optimal Quantization in H.263+" |
| 629 |
|
* J.Wen, M.Luttrell, J.Villasenor |
| 630 |
|
* IEEE Transactions on Image Processing, Vol.9, No.8, Aug. 2000. |
| 631 |
|
* |
| 632 |
|
* we are at stake with a simplified Bellmand-Ford / Dijkstra Single |
| 633 |
|
* Source Shortest Path algo. But due to the underlying graph structure |
| 634 |
|
* ("Trellis"), it can be turned into a dynamic programming algo, |
| 635 |
|
* partially saving the explicit graph's nodes representation. And |
| 636 |
|
* without using a heap, since the open frontier of the DAG is always |
| 637 |
|
* known, and of fixed size. |
| 638 |
|
*--------------------------------------------------------------------------*/ |
| 639 |
|
|
| 640 |
|
|
| 641 |
|
|
| 642 |
|
/* Codes lengths for relevant levels. */ |
| 643 |
|
|
| 644 |
|
/* let's factorize: */ |
| 645 |
|
static const uint8_t Code_Len0[64] = { |
| 646 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 647 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30 }; |
| 648 |
|
static const uint8_t Code_Len1[64] = { |
| 649 |
|
20,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 650 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30 }; |
| 651 |
|
static const uint8_t Code_Len2[64] = { |
| 652 |
|
19,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 653 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30 }; |
| 654 |
|
static const uint8_t Code_Len3[64] = { |
| 655 |
|
18,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 656 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30 }; |
| 657 |
|
static const uint8_t Code_Len4[64] = { |
| 658 |
|
17,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 659 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30 }; |
| 660 |
|
static const uint8_t Code_Len5[64] = { |
| 661 |
|
16,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 662 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30 }; |
| 663 |
|
static const uint8_t Code_Len6[64] = { |
| 664 |
|
15,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 665 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30 }; |
| 666 |
|
static const uint8_t Code_Len7[64] = { |
| 667 |
|
13,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 668 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30 }; |
| 669 |
|
static const uint8_t Code_Len8[64] = { |
| 670 |
|
11,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 671 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30 }; |
| 672 |
|
static const uint8_t Code_Len9[64] = { |
| 673 |
|
12,21,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 674 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30 }; |
| 675 |
|
static const uint8_t Code_Len10[64] = { |
| 676 |
|
12,20,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 677 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30 }; |
| 678 |
|
static const uint8_t Code_Len11[64] = { |
| 679 |
|
12,19,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 680 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30 }; |
| 681 |
|
static const uint8_t Code_Len12[64] = { |
| 682 |
|
11,17,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 683 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30 }; |
| 684 |
|
static const uint8_t Code_Len13[64] = { |
| 685 |
|
11,15,21,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 686 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30 }; |
| 687 |
|
static const uint8_t Code_Len14[64] = { |
| 688 |
|
10,12,19,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 689 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30 }; |
| 690 |
|
static const uint8_t Code_Len15[64] = { |
| 691 |
|
10,13,17,19,21,21,21,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 692 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30 }; |
| 693 |
|
static const uint8_t Code_Len16[64] = { |
| 694 |
|
9,12,13,18,18,19,19,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 695 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30}; |
| 696 |
|
static const uint8_t Code_Len17[64] = { |
| 697 |
|
8,11,13,14,14,14,15,19,19,19,21,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 698 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30 }; |
| 699 |
|
static const uint8_t Code_Len18[64] = { |
| 700 |
|
7, 9,11,11,13,13,13,15,15,15,16,22,22,22,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 701 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30 }; |
| 702 |
|
static const uint8_t Code_Len19[64] = { |
| 703 |
|
5, 7, 9,10,10,11,11,11,11,11,13,14,16,17,17,18,18,18,18,18,18,18,18,20,20,21,21,30,30,30,30,30, |
| 704 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30 }; |
| 705 |
|
static const uint8_t Code_Len20[64] = { |
| 706 |
|
3, 4, 5, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9,10,10,10,10,10,10,10,10,12,12,13,13,12,13,14,15,15, |
| 707 |
|
15,16,16,16,16,17,17,17,18,18,19,19,19,19,19,19,19,19,21,21,22,22,30,30,30,30,30,30,30,30,30,30 }; |
| 708 |
|
|
| 709 |
|
/* a few more table for LAST table: */ |
| 710 |
|
static const uint8_t Code_Len21[64] = { |
| 711 |
|
13,20,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 712 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30}; |
| 713 |
|
static const uint8_t Code_Len22[64] = { |
| 714 |
|
12,15,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30, |
| 715 |
|
30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30}; |
| 716 |
|
static const uint8_t Code_Len23[64] = { |
| 717 |
|
10,12,15,15,15,16,16,16,16,17,17,17,17,17,17,17,17,18,18,18,18,18,18,18,18,19,19,19,19,20,20,20, |
| 718 |
|
20,21,21,21,21,21,21,21,21,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30,30}; |
| 719 |
|
static const uint8_t Code_Len24[64] = { |
| 720 |
|
5, 7, 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9,10,10,10,10,10,10,10,10,11,11,11,11,12,12,12, |
| 721 |
|
12,13,13,13,13,13,13,13,13,14,16,16,16,16,17,17,17,17,18,18,18,18,18,18,18,18,19,19,19,19,19,19}; |
| 722 |
|
|
| 723 |
|
|
| 724 |
|
static const uint8_t * const B16_17_Code_Len[24] = { /* levels [1..24] */ |
| 725 |
|
Code_Len20,Code_Len19,Code_Len18,Code_Len17, |
| 726 |
|
Code_Len16,Code_Len15,Code_Len14,Code_Len13, |
| 727 |
|
Code_Len12,Code_Len11,Code_Len10,Code_Len9, |
| 728 |
|
Code_Len8, Code_Len7 ,Code_Len6 ,Code_Len5, |
| 729 |
|
Code_Len4, Code_Len3, Code_Len3 ,Code_Len2, |
| 730 |
|
Code_Len2, Code_Len1, Code_Len1, Code_Len1, |
| 731 |
|
}; |
| 732 |
|
|
| 733 |
|
static const uint8_t * const B16_17_Code_Len_Last[6] = { /* levels [1..6] */ |
| 734 |
|
Code_Len24,Code_Len23,Code_Len22,Code_Len21, Code_Len3, Code_Len1, |
| 735 |
|
}; |
| 736 |
|
|
| 737 |
|
/* TL_SHIFT controls the precision of the RD optimizations in trellis |
| 738 |
|
* valid range is [10..16]. The bigger, the more trellis is vulnerable |
| 739 |
|
* to overflows in cost formulas. |
| 740 |
|
* - 10 allows ac values up to 2^11 == 2048 |
| 741 |
|
* - 16 allows ac values up to 2^8 == 256 |
| 742 |
|
*/ |
| 743 |
|
#define TL_SHIFT 11 |
| 744 |
|
#define TL(q) ((0xfe00>>(16-TL_SHIFT))/(q*q)) |
| 745 |
|
|
| 746 |
|
static const int Trellis_Lambda_Tabs[31] = { |
| 747 |
|
TL( 1),TL( 2),TL( 3),TL( 4),TL( 5),TL( 6), TL( 7), |
| 748 |
|
TL( 8),TL( 9),TL(10),TL(11),TL(12),TL(13),TL(14), TL(15), |
| 749 |
|
TL(16),TL(17),TL(18),TL(19),TL(20),TL(21),TL(22), TL(23), |
| 750 |
|
TL(24),TL(25),TL(26),TL(27),TL(28),TL(29),TL(30), TL(31) |
| 751 |
|
}; |
| 752 |
|
#undef TL |
| 753 |
|
|
| 754 |
|
static int __inline |
| 755 |
|
Find_Last(const int16_t *C, const uint16_t *Zigzag, int i) |
| 756 |
|
{ |
| 757 |
|
while(i>=0) |
| 758 |
|
if (C[Zigzag[i]]) |
| 759 |
|
return i; |
| 760 |
|
else i--; |
| 761 |
|
return -1; |
| 762 |
|
} |
| 763 |
|
|
| 764 |
|
#define TRELLIS_MIN_EFFORT 3 |
| 765 |
|
|
| 766 |
|
/* this routine has been strippen of all debug code */ |
| 767 |
|
static int |
| 768 |
|
dct_quantize_trellis_c(int16_t *const Out, |
| 769 |
|
const int16_t *const In, |
| 770 |
|
int Q, |
| 771 |
|
const uint16_t * const Zigzag, |
| 772 |
|
const uint16_t * const QuantMatrix, |
| 773 |
|
int Non_Zero, |
| 774 |
|
int Sum, |
| 775 |
|
int Lambda_Mod) |
| 776 |
|
{ |
| 777 |
|
|
| 778 |
|
/* Note: We should search last non-zero coeffs on *real* DCT input coeffs |
| 779 |
|
* (In[]), not quantized one (Out[]). However, it only improves the result |
| 780 |
|
* *very* slightly (~0.01dB), whereas speed drops to crawling level :) |
| 781 |
|
* Well, actually, taking 1 more coeff past Non_Zero into account sometimes |
| 782 |
|
* helps. */ |
| 783 |
|
typedef struct { int16_t Run, Level; } NODE; |
| 784 |
|
|
| 785 |
|
NODE Nodes[65], Last = { 0, 0}; |
| 786 |
|
uint32_t Run_Costs0[64+1]; |
| 787 |
|
uint32_t * const Run_Costs = Run_Costs0 + 1; |
| 788 |
|
|
| 789 |
|
/* it's 1/lambda, actually */ |
| 790 |
|
const int Lambda = (Lambda_Mod*Trellis_Lambda_Tabs[Q-1])>>LAMBDA_EXP; |
| 791 |
|
|
| 792 |
|
int Run_Start = -1; |
| 793 |
|
uint32_t Min_Cost = 2<<TL_SHIFT; |
| 794 |
|
|
| 795 |
|
int Last_Node = -1; |
| 796 |
|
uint32_t Last_Cost = 0; |
| 797 |
|
|
| 798 |
|
int i, j; |
| 799 |
|
|
| 800 |
|
/* source (w/ CBP penalty) */ |
| 801 |
|
Run_Costs[-1] = 2<<TL_SHIFT; |
| 802 |
|
|
| 803 |
|
Non_Zero = Find_Last(Out, Zigzag, Non_Zero); |
| 804 |
|
if (Non_Zero < TRELLIS_MIN_EFFORT) |
| 805 |
|
Non_Zero = TRELLIS_MIN_EFFORT; |
| 806 |
|
|
| 807 |
|
for(i=0; i<=Non_Zero; i++) { |
| 808 |
|
const int q = ((Q*QuantMatrix[Zigzag[i]])>>4); |
| 809 |
|
const int Mult = 2*q; |
| 810 |
|
const int Bias = (q-1) | 1; |
| 811 |
|
const int Lev0 = Mult + Bias; |
| 812 |
|
|
| 813 |
|
const int AC = In[Zigzag[i]]; |
| 814 |
|
const int Level1 = Out[Zigzag[i]]; |
| 815 |
|
const unsigned int Dist0 = Lambda* AC*AC; |
| 816 |
|
uint32_t Best_Cost = 0xf0000000; |
| 817 |
|
Last_Cost += Dist0; |
| 818 |
|
|
| 819 |
|
/* very specialized loop for -1,0,+1 */ |
| 820 |
|
if ((uint32_t)(Level1+1)<3) { |
| 821 |
|
int dQ; |
| 822 |
|
int Run; |
| 823 |
|
uint32_t Cost0; |
| 824 |
|
|
| 825 |
|
if (AC<0) { |
| 826 |
|
Nodes[i].Level = -1; |
| 827 |
|
dQ = Lev0 + AC; |
| 828 |
|
} else { |
| 829 |
|
Nodes[i].Level = 1; |
| 830 |
|
dQ = Lev0 - AC; |
| 831 |
|
} |
| 832 |
|
Cost0 = Lambda*dQ*dQ; |
| 833 |
|
|
| 834 |
|
Nodes[i].Run = 1; |
| 835 |
|
Best_Cost = (Code_Len20[0]<<TL_SHIFT) + Run_Costs[i-1]+Cost0; |
| 836 |
|
for(Run=i-Run_Start; Run>0; --Run) { |
| 837 |
|
const uint32_t Cost_Base = Cost0 + Run_Costs[i-Run]; |
| 838 |
|
const uint32_t Cost = Cost_Base + (Code_Len20[Run-1]<<TL_SHIFT); |
| 839 |
|
const uint32_t lCost = Cost_Base + (Code_Len24[Run-1]<<TL_SHIFT); |
| 840 |
|
|
| 841 |
|
/* TODO: what about tie-breaks? Should we favor short runs or |
| 842 |
|
* long runs? Although the error is the same, it would not be |
| 843 |
|
* spread the same way along high and low frequencies... */ |
| 844 |
|
|
| 845 |
|
/* Gruel: I'd say, favour short runs => hifreq errors (HVS) */ |
| 846 |
|
|
| 847 |
|
if (Cost<Best_Cost) { |
| 848 |
|
Best_Cost = Cost; |
| 849 |
|
Nodes[i].Run = Run; |
| 850 |
|
} |
| 851 |
|
|
| 852 |
|
if (lCost<Last_Cost) { |
| 853 |
|
Last_Cost = lCost; |
| 854 |
|
Last.Run = Run; |
| 855 |
|
Last_Node = i; |
| 856 |
|
} |
| 857 |
|
} |
| 858 |
|
if (Last_Node==i) |
| 859 |
|
Last.Level = Nodes[i].Level; |
| 860 |
|
} else if (51U>(uint32_t)(Level1+25)) { |
| 861 |
|
/* "big" levels (not less than ESC3, though) */ |
| 862 |
|
const uint8_t *Tbl_L1, *Tbl_L2, *Tbl_L1_Last, *Tbl_L2_Last; |
| 863 |
|
int Level2; |
| 864 |
|
int dQ1, dQ2; |
| 865 |
|
int Run; |
| 866 |
|
uint32_t Dist1,Dist2; |
| 867 |
|
int dDist21; |
| 868 |
|
|
| 869 |
|
if (Level1>1) { |
| 870 |
|
dQ1 = Level1*Mult-AC + Bias; |
| 871 |
|
dQ2 = dQ1 - Mult; |
| 872 |
|
Level2 = Level1-1; |
| 873 |
|
Tbl_L1 = (Level1<=24) ? B16_17_Code_Len[Level1-1] : Code_Len0; |
| 874 |
|
Tbl_L2 = (Level2<=24) ? B16_17_Code_Len[Level2-1] : Code_Len0; |
| 875 |
|
Tbl_L1_Last = (Level1<=6) ? B16_17_Code_Len_Last[Level1-1] : Code_Len0; |
| 876 |
|
Tbl_L2_Last = (Level2<=6) ? B16_17_Code_Len_Last[Level2-1] : Code_Len0; |
| 877 |
|
} else { /* Level1<-1 */ |
| 878 |
|
dQ1 = Level1*Mult-AC - Bias; |
| 879 |
|
dQ2 = dQ1 + Mult; |
| 880 |
|
Level2 = Level1 + 1; |
| 881 |
|
Tbl_L1 = (Level1>=-24) ? B16_17_Code_Len[Level1^-1] : Code_Len0; |
| 882 |
|
Tbl_L2 = (Level2>=-24) ? B16_17_Code_Len[Level2^-1] : Code_Len0; |
| 883 |
|
Tbl_L1_Last = (Level1>=- 6) ? B16_17_Code_Len_Last[Level1^-1] : Code_Len0; |
| 884 |
|
Tbl_L2_Last = (Level2>=- 6) ? B16_17_Code_Len_Last[Level2^-1] : Code_Len0; |
| 885 |
|
} |
| 886 |
|
|
| 887 |
|
Dist1 = Lambda*dQ1*dQ1; |
| 888 |
|
Dist2 = Lambda*dQ2*dQ2; |
| 889 |
|
dDist21 = Dist2-Dist1; |
| 890 |
|
|
| 891 |
|
for(Run=i-Run_Start; Run>0; --Run) |
| 892 |
|
{ |
| 893 |
|
const uint32_t Cost_Base = Dist1 + Run_Costs[i-Run]; |
| 894 |
|
uint32_t Cost1, Cost2; |
| 895 |
|
int bLevel; |
| 896 |
|
|
| 897 |
|
/* for sub-optimal (but slightly worth it, speed-wise) search, |
| 898 |
|
* uncomment the following: |
| 899 |
|
* if (Cost_Base>=Best_Cost) continue; |
| 900 |
|
* (? doesn't seem to have any effect -- gruel ) */ |
| 901 |
|
|
| 902 |
|
Cost1 = Cost_Base + (Tbl_L1[Run-1]<<TL_SHIFT); |
| 903 |
|
Cost2 = Cost_Base + (Tbl_L2[Run-1]<<TL_SHIFT) + dDist21; |
| 904 |
|
|
| 905 |
|
if (Cost2<Cost1) { |
| 906 |
|
Cost1 = Cost2; |
| 907 |
|
bLevel = Level2; |
| 908 |
|
} else { |
| 909 |
|
bLevel = Level1; |
| 910 |
|
} |
| 911 |
|
|
| 912 |
|
if (Cost1<Best_Cost) { |
| 913 |
|
Best_Cost = Cost1; |
| 914 |
|
Nodes[i].Run = Run; |
| 915 |
|
Nodes[i].Level = bLevel; |
| 916 |
|
} |
| 917 |
|
|
| 918 |
|
Cost1 = Cost_Base + (Tbl_L1_Last[Run-1]<<TL_SHIFT); |
| 919 |
|
Cost2 = Cost_Base + (Tbl_L2_Last[Run-1]<<TL_SHIFT) + dDist21; |
| 920 |
|
|
| 921 |
|
if (Cost2<Cost1) { |
| 922 |
|
Cost1 = Cost2; |
| 923 |
|
bLevel = Level2; |
| 924 |
|
} else { |
| 925 |
|
bLevel = Level1; |
| 926 |
|
} |
| 927 |
|
|
| 928 |
|
if (Cost1<Last_Cost) { |
| 929 |
|
Last_Cost = Cost1; |
| 930 |
|
Last.Run = Run; |
| 931 |
|
Last.Level = bLevel; |
| 932 |
|
Last_Node = i; |
| 933 |
|
} |
| 934 |
|
} /* end of "for Run" */ |
| 935 |
|
} else { |
| 936 |
|
/* Very very high levels, with no chance of being optimizable |
| 937 |
|
* => Simply pick best Run. */ |
| 938 |
|
int Run; |
| 939 |
|
for(Run=i-Run_Start; Run>0; --Run) { |
| 940 |
|
/* 30 bits + no distortion */ |
| 941 |
|
const uint32_t Cost = (30<<TL_SHIFT) + Run_Costs[i-Run]; |
| 942 |
|
if (Cost<Best_Cost) { |
| 943 |
|
Best_Cost = Cost; |
| 944 |
|
Nodes[i].Run = Run; |
| 945 |
|
Nodes[i].Level = Level1; |
| 946 |
|
} |
| 947 |
|
|
| 948 |
|
if (Cost<Last_Cost) { |
| 949 |
|
Last_Cost = Cost; |
| 950 |
|
Last.Run = Run; |
| 951 |
|
Last.Level = Level1; |
| 952 |
|
Last_Node = i; |
| 953 |
|
} |
| 954 |
|
} |
| 955 |
|
} |
| 956 |
|
|
| 957 |
|
|
| 958 |
|
Run_Costs[i] = Best_Cost; |
| 959 |
|
|
| 960 |
|
if (Best_Cost < Min_Cost + Dist0) { |
| 961 |
|
Min_Cost = Best_Cost; |
| 962 |
|
Run_Start = i; |
| 963 |
|
} else { |
| 964 |
|
/* as noticed by Michael Niedermayer (michaelni at gmx.at), |
| 965 |
|
* there's a code shorter by 1 bit for a larger run (!), same |
| 966 |
|
* level. We give it a chance by not moving the left barrier too |
| 967 |
|
* much. */ |
| 968 |
|
while( Run_Costs[Run_Start]>Min_Cost+(1<<TL_SHIFT) ) |
| 969 |
|
Run_Start++; |
| 970 |
|
|
| 971 |
|
/* spread on preceding coeffs the cost incurred by skipping this |
| 972 |
|
* one */ |
| 973 |
|
for(j=Run_Start; j<i; ++j) Run_Costs[j] += Dist0; |
| 974 |
|
Min_Cost += Dist0; |
| 975 |
|
} |
| 976 |
|
} |
| 977 |
|
|
| 978 |
|
/* It seems trellis doesn't give good results... just leave the block untouched |
| 979 |
|
* and return the original sum value */ |
| 980 |
|
if (Last_Node<0) |
| 981 |
|
return Sum; |
| 982 |
|
|
| 983 |
|
/* reconstruct optimal sequence backward with surviving paths */ |
| 984 |
|
memset(Out, 0x00, 64*sizeof(*Out)); |
| 985 |
|
Out[Zigzag[Last_Node]] = Last.Level; |
| 986 |
|
i = Last_Node - Last.Run; |
| 987 |
|
Sum = abs(Last.Level); |
| 988 |
|
while(i>=0) { |
| 989 |
|
Out[Zigzag[i]] = Nodes[i].Level; |
| 990 |
|
Sum += abs(Nodes[i].Level); |
| 991 |
|
i -= Nodes[i].Run; |
| 992 |
|
} |
| 993 |
|
|
| 994 |
|
return Sum; |
| 995 |
|
} |
| 996 |
|
|
| 997 |
|
/* original version including heavy debugging info */ |
| 998 |
|
|
| 999 |
|
#ifdef DBGTRELL |
| 1000 |
|
|
| 1001 |
|
#define DBG 0 |
| 1002 |
|
|
| 1003 |
|
static __inline uint32_t Evaluate_Cost(const int16_t *C, int Mult, int Bias, |
| 1004 |
|
const uint16_t * Zigzag, int Max, int Lambda) |
| 1005 |
|
{ |
| 1006 |
|
#if (DBG>0) |
| 1007 |
|
const int16_t * const Ref = C + 6*64; |
| 1008 |
|
int Last = Max; |
| 1009 |
|
int Bits = 0; |
| 1010 |
|
int Dist = 0; |
| 1011 |
|
int i; |
| 1012 |
|
uint32_t Cost; |
| 1013 |
|
|
| 1014 |
|
while(Last>=0 && C[Zigzag[Last]]==0) |
| 1015 |
|
Last--; |
| 1016 |
|
|
| 1017 |
|
if (Last>=0) { |
| 1018 |
|
int j=0, j0=0; |
| 1019 |
|
int Run, Level; |
| 1020 |
|
|
| 1021 |
|
Bits = 2; /* CBP */ |
| 1022 |
|
while(j<Last) { |
| 1023 |
|
while(!C[Zigzag[j]]) |
| 1024 |
|
j++; |
| 1025 |
|
if (j==Last) |
| 1026 |
|
break; |
| 1027 |
|
Level=C[Zigzag[j]]; |
| 1028 |
|
Run = j - j0; |
| 1029 |
|
j0 = ++j; |
| 1030 |
|
if (Level>=-24 && Level<=24) |
| 1031 |
|
Bits += B16_17_Code_Len[(Level<0) ? -Level-1 : Level-1][Run]; |
| 1032 |
|
else |
| 1033 |
|
Bits += 30; |
| 1034 |
|
} |
| 1035 |
|
Level = C[Zigzag[Last]]; |
| 1036 |
|
Run = j - j0; |
| 1037 |
|
if (Level>=-6 && Level<=6) |
| 1038 |
|
Bits += B16_17_Code_Len_Last[(Level<0) ? -Level-1 : Level-1][Run]; |
| 1039 |
|
else |
| 1040 |
|
Bits += 30; |
| 1041 |
|
} |
| 1042 |
|
|
| 1043 |
|
for(i=0; i<=Last; ++i) { |
| 1044 |
|
int V = C[Zigzag[i]]*Mult; |
| 1045 |
|
if (V>0) |
| 1046 |
|
V += Bias; |
| 1047 |
|
else |
| 1048 |
|
if (V<0) |
| 1049 |
|
V -= Bias; |
| 1050 |
|
V -= Ref[Zigzag[i]]; |
| 1051 |
|
Dist += V*V; |
| 1052 |
|
} |
| 1053 |
|
Cost = Lambda*Dist + (Bits<<TL_SHIFT); |
| 1054 |
|
if (DBG==1) |
| 1055 |
|
printf( " Last:%2d/%2d Cost = [(Bits=%5.0d) + Lambda*(Dist=%6.0d) = %d ] >>12= %d ", Last,Max, Bits, Dist, Cost, Cost>>12 ); |
| 1056 |
|
return Cost; |
| 1057 |
|
|
| 1058 |
|
#else |
| 1059 |
|
return 0; |
| 1060 |
|
#endif |
| 1061 |
|
} |
| 1062 |
|
|
| 1063 |
|
|
| 1064 |
|
static int |
| 1065 |
|
dct_quantize_trellis_h263_c(int16_t *const Out, const int16_t *const In, int Q, const uint16_t * const Zigzag, int Non_Zero) |
| 1066 |
|
{ |
| 1067 |
|
|
| 1068 |
|
/* |
| 1069 |
|
* Note: We should search last non-zero coeffs on *real* DCT input coeffs (In[]), |
| 1070 |
|
* not quantized one (Out[]). However, it only improves the result *very* |
| 1071 |
|
* slightly (~0.01dB), whereas speed drops to crawling level :) |
| 1072 |
|
* Well, actually, taking 1 more coeff past Non_Zero into account sometimes helps. |
| 1073 |
|
*/ |
| 1074 |
|
typedef struct { int16_t Run, Level; } NODE; |
| 1075 |
|
|
| 1076 |
|
NODE Nodes[65], Last; |
| 1077 |
|
uint32_t Run_Costs0[64+1]; |
| 1078 |
|
uint32_t * const Run_Costs = Run_Costs0 + 1; |
| 1079 |
|
const int Mult = 2*Q; |
| 1080 |
|
const int Bias = (Q-1) | 1; |
| 1081 |
|
const int Lev0 = Mult + Bias; |
| 1082 |
|
const int Lambda = Trellis_Lambda_Tabs[Q-1]; /* it's 1/lambda, actually */ |
| 1083 |
|
|
| 1084 |
|
int Run_Start = -1; |
| 1085 |
|
Run_Costs[-1] = 2<<TL_SHIFT; /* source (w/ CBP penalty) */ |
| 1086 |
|
uint32_t Min_Cost = 2<<TL_SHIFT; |
| 1087 |
|
|
| 1088 |
|
int Last_Node = -1; |
| 1089 |
|
uint32_t Last_Cost = 0; |
| 1090 |
|
|
| 1091 |
|
int i, j; |
| 1092 |
|
|
| 1093 |
|
#if (DBG>0) |
| 1094 |
|
Last.Level = 0; Last.Run = -1; /* just initialize to smthg */ |
| 1095 |
|
#endif |
| 1096 |
|
|
| 1097 |
|
Non_Zero = Find_Last(Out, Zigzag, Non_Zero); |
| 1098 |
|
if (Non_Zero<0) |
| 1099 |
|
return -1; |
| 1100 |
|
|
| 1101 |
|
for(i=0; i<=Non_Zero; i++) |
| 1102 |
|
{ |
| 1103 |
|
const int AC = In[Zigzag[i]]; |
| 1104 |
|
const int Level1 = Out[Zigzag[i]]; |
| 1105 |
|
const int Dist0 = Lambda* AC*AC; |
| 1106 |
|
uint32_t Best_Cost = 0xf0000000; |
| 1107 |
|
Last_Cost += Dist0; |
| 1108 |
|
|
| 1109 |
|
if ((uint32_t)(Level1+1)<3) /* very specialized loop for -1,0,+1 */ |
| 1110 |
|
{ |
| 1111 |
|
int dQ; |
| 1112 |
|
int Run; |
| 1113 |
|
uint32_t Cost0; |
| 1114 |
|
|
| 1115 |
|
if (AC<0) { |
| 1116 |
|
Nodes[i].Level = -1; |
| 1117 |
|
dQ = Lev0 + AC; |
| 1118 |
|
} else { |
| 1119 |
|
Nodes[i].Level = 1; |
| 1120 |
|
dQ = Lev0 - AC; |
| 1121 |
|
} |
| 1122 |
|
Cost0 = Lambda*dQ*dQ; |
| 1123 |
|
|
| 1124 |
|
Nodes[i].Run = 1; |
| 1125 |
|
Best_Cost = (Code_Len20[0]<<TL_SHIFT) + Run_Costs[i-1]+Cost0; |
| 1126 |
|
for(Run=i-Run_Start; Run>0; --Run) |
| 1127 |
|
{ |
| 1128 |
|
const uint32_t Cost_Base = Cost0 + Run_Costs[i-Run]; |
| 1129 |
|
const uint32_t Cost = Cost_Base + (Code_Len20[Run-1]<<TL_SHIFT); |
| 1130 |
|
const uint32_t lCost = Cost_Base + (Code_Len24[Run-1]<<TL_SHIFT); |
| 1131 |
|
|
| 1132 |
|
/* |
| 1133 |
|
* TODO: what about tie-breaks? Should we favor short runs or |
| 1134 |
|
* long runs? Although the error is the same, it would not be |
| 1135 |
|
* spread the same way along high and low frequencies... |
| 1136 |
|
*/ |
| 1137 |
|
if (Cost<Best_Cost) { |
| 1138 |
|
Best_Cost = Cost; |
| 1139 |
|
Nodes[i].Run = Run; |
| 1140 |
|
} |
| 1141 |
|
|
| 1142 |
|
if (lCost<Last_Cost) { |
| 1143 |
|
Last_Cost = lCost; |
| 1144 |
|
Last.Run = Run; |
| 1145 |
|
Last_Node = i; |
| 1146 |
|
} |
| 1147 |
|
} |
| 1148 |
|
if (Last_Node==i) |
| 1149 |
|
Last.Level = Nodes[i].Level; |
| 1150 |
|
|
| 1151 |
|
if (DBG==1) { |
| 1152 |
|
Run_Costs[i] = Best_Cost; |
| 1153 |
|
printf( "Costs #%2d: ", i); |
| 1154 |
|
for(j=-1;j<=Non_Zero;++j) { |
| 1155 |
|
if (j==Run_Start) printf( " %3.0d|", Run_Costs[j]>>12 ); |
| 1156 |
|
else if (j>Run_Start && j<i) printf( " %3.0d|", Run_Costs[j]>>12 ); |
| 1157 |
|
else if (j==i) printf( "(%3.0d)", Run_Costs[j]>>12 ); |
| 1158 |
|
else printf( " - |" ); |
| 1159 |
|
} |
| 1160 |
|
printf( "<%3.0d %2d %d>", Min_Cost>>12, Nodes[i].Level, Nodes[i].Run ); |
| 1161 |
|
printf( " Last:#%2d {%3.0d %2d %d}", Last_Node, Last_Cost>>12, Last.Level, Last.Run ); |
| 1162 |
|
printf( " AC:%3.0d Dist0:%3d Dist(%d)=%d", AC, Dist0>>12, Nodes[i].Level, Cost0>>12 ); |
| 1163 |
|
printf( "\n" ); |
| 1164 |
|
} |
| 1165 |
|
} |
| 1166 |
|
else /* "big" levels */ |
| 1167 |
|
{ |
| 1168 |
|
const uint8_t *Tbl_L1, *Tbl_L2, *Tbl_L1_Last, *Tbl_L2_Last; |
| 1169 |
|
int Level2; |
| 1170 |
|
int dQ1, dQ2; |
| 1171 |
|
int Run; |
| 1172 |
|
uint32_t Dist1,Dist2; |
| 1173 |
|
int dDist21; |
| 1174 |
|
|
| 1175 |
|
if (Level1>1) { |
| 1176 |
|
dQ1 = Level1*Mult-AC + Bias; |
| 1177 |
|
dQ2 = dQ1 - Mult; |
| 1178 |
|
Level2 = Level1-1; |
| 1179 |
|
Tbl_L1 = (Level1<=24) ? B16_17_Code_Len[Level1-1] : Code_Len0; |
| 1180 |
|
Tbl_L2 = (Level2<=24) ? B16_17_Code_Len[Level2-1] : Code_Len0; |
| 1181 |
|
Tbl_L1_Last = (Level1<=6) ? B16_17_Code_Len_Last[Level1-1] : Code_Len0; |
| 1182 |
|
Tbl_L2_Last = (Level2<=6) ? B16_17_Code_Len_Last[Level2-1] : Code_Len0; |
| 1183 |
|
} else { /* Level1<-1 */ |
| 1184 |
|
dQ1 = Level1*Mult-AC - Bias; |
| 1185 |
|
dQ2 = dQ1 + Mult; |
| 1186 |
|
Level2 = Level1 + 1; |
| 1187 |
|
Tbl_L1 = (Level1>=-24) ? B16_17_Code_Len[Level1^-1] : Code_Len0; |
| 1188 |
|
Tbl_L2 = (Level2>=-24) ? B16_17_Code_Len[Level2^-1] : Code_Len0; |
| 1189 |
|
Tbl_L1_Last = (Level1>=- 6) ? B16_17_Code_Len_Last[Level1^-1] : Code_Len0; |
| 1190 |
|
Tbl_L2_Last = (Level2>=- 6) ? B16_17_Code_Len_Last[Level2^-1] : Code_Len0; |
| 1191 |
|
} |
| 1192 |
|
Dist1 = Lambda*dQ1*dQ1; |
| 1193 |
|
Dist2 = Lambda*dQ2*dQ2; |
| 1194 |
|
dDist21 = Dist2-Dist1; |
| 1195 |
|
|
| 1196 |
|
for(Run=i-Run_Start; Run>0; --Run) |
| 1197 |
|
{ |
| 1198 |
|
const uint32_t Cost_Base = Dist1 + Run_Costs[i-Run]; |
| 1199 |
|
uint32_t Cost1, Cost2; |
| 1200 |
|
int bLevel; |
| 1201 |
|
|
| 1202 |
|
/* |
| 1203 |
|
* for sub-optimal (but slightly worth it, speed-wise) search, uncomment the following: |
| 1204 |
|
* if (Cost_Base>=Best_Cost) continue; |
| 1205 |
|
*/ |
| 1206 |
|
Cost1 = Cost_Base + (Tbl_L1[Run-1]<<TL_SHIFT); |
| 1207 |
|
Cost2 = Cost_Base + (Tbl_L2[Run-1]<<TL_SHIFT) + dDist21; |
| 1208 |
|
|
| 1209 |
|
if (Cost2<Cost1) { |
| 1210 |
|
Cost1 = Cost2; |
| 1211 |
|
bLevel = Level2; |
| 1212 |
|
} else |
| 1213 |
|
bLevel = Level1; |
| 1214 |
|
|
| 1215 |
|
if (Cost1<Best_Cost) { |
| 1216 |
|
Best_Cost = Cost1; |
| 1217 |
|
Nodes[i].Run = Run; |
| 1218 |
|
Nodes[i].Level = bLevel; |
| 1219 |
|
} |
| 1220 |
|
|
| 1221 |
|
Cost1 = Cost_Base + (Tbl_L1_Last[Run-1]<<TL_SHIFT); |
| 1222 |
|
Cost2 = Cost_Base + (Tbl_L2_Last[Run-1]<<TL_SHIFT) + dDist21; |
| 1223 |
|
|
| 1224 |
|
if (Cost2<Cost1) { |
| 1225 |
|
Cost1 = Cost2; |
| 1226 |
|
bLevel = Level2; |
| 1227 |
|
} else |
| 1228 |
|
bLevel = Level1; |
| 1229 |
|
|
| 1230 |
|
if (Cost1<Last_Cost) { |
| 1231 |
|
Last_Cost = Cost1; |
| 1232 |
|
Last.Run = Run; |
| 1233 |
|
Last.Level = bLevel; |
| 1234 |
|
Last_Node = i; |
| 1235 |
|
} |
| 1236 |
|
} /* end of "for Run" */ |
| 1237 |
|
|
| 1238 |
|
if (DBG==1) { |
| 1239 |
|
Run_Costs[i] = Best_Cost; |
| 1240 |
|
printf( "Costs #%2d: ", i); |
| 1241 |
|
for(j=-1;j<=Non_Zero;++j) { |
| 1242 |
|
if (j==Run_Start) printf( " %3.0d|", Run_Costs[j]>>12 ); |
| 1243 |
|
else if (j>Run_Start && j<i) printf( " %3.0d|", Run_Costs[j]>>12 ); |
| 1244 |
|
else if (j==i) printf( "(%3.0d)", Run_Costs[j]>>12 ); |
| 1245 |
|
else printf( " - |" ); |
| 1246 |
|
} |
| 1247 |
|
printf( "<%3.0d %2d %d>", Min_Cost>>12, Nodes[i].Level, Nodes[i].Run ); |
| 1248 |
|
printf( " Last:#%2d {%3.0d %2d %d}", Last_Node, Last_Cost>>12, Last.Level, Last.Run ); |
| 1249 |
|
printf( " AC:%3.0d Dist0:%3d Dist(%2d):%3d Dist(%2d):%3d", AC, Dist0>>12, Level1, Dist1>>12, Level2, Dist2>>12 ); |
| 1250 |
|
printf( "\n" ); |
| 1251 |
|
} |
| 1252 |
|
} |
| 1253 |
|
|
| 1254 |
|
Run_Costs[i] = Best_Cost; |
| 1255 |
|
|
| 1256 |
|
if (Best_Cost < Min_Cost + Dist0) { |
| 1257 |
|
Min_Cost = Best_Cost; |
| 1258 |
|
Run_Start = i; |
| 1259 |
|
} |
| 1260 |
|
else |
| 1261 |
|
{ |
| 1262 |
|
/* |
| 1263 |
|
* as noticed by Michael Niedermayer (michaelni at gmx.at), there's |
| 1264 |
|
* a code shorter by 1 bit for a larger run (!), same level. We give |
| 1265 |
|
* it a chance by not moving the left barrier too much. |
| 1266 |
|
*/ |
| 1267 |
|
|
| 1268 |
|
while( Run_Costs[Run_Start]>Min_Cost+(1<<TL_SHIFT) ) |
| 1269 |
|
Run_Start++; |
| 1270 |
|
|
| 1271 |
|
/* spread on preceding coeffs the cost incurred by skipping this one */ |
| 1272 |
|
for(j=Run_Start; j<i; ++j) Run_Costs[j] += Dist0; |
| 1273 |
|
Min_Cost += Dist0; |
| 1274 |
|
} |
| 1275 |
|
} |
| 1276 |
|
|
| 1277 |
|
if (DBG) { |
| 1278 |
|
Last_Cost = Evaluate_Cost(Out,Mult,Bias, Zigzag,Non_Zero, Lambda); |
| 1279 |
|
if (DBG==1) { |
| 1280 |
|
printf( "=> " ); |
| 1281 |
|
for(i=0; i<=Non_Zero; ++i) printf( "[%3.0d] ", Out[Zigzag[i]] ); |
| 1282 |
|
printf( "\n" ); |
| 1283 |
|
} |
| 1284 |
|
} |
| 1285 |
|
|
| 1286 |
|
if (Last_Node<0) |
| 1287 |
|
return -1; |
| 1288 |
|
|
| 1289 |
|
/* reconstruct optimal sequence backward with surviving paths */ |
| 1290 |
|
memset(Out, 0x00, 64*sizeof(*Out)); |
| 1291 |
|
Out[Zigzag[Last_Node]] = Last.Level; |
| 1292 |
|
i = Last_Node - Last.Run; |
| 1293 |
|
while(i>=0) { |
| 1294 |
|
Out[Zigzag[i]] = Nodes[i].Level; |
| 1295 |
|
i -= Nodes[i].Run; |
| 1296 |
|
} |
| 1297 |
|
|
| 1298 |
|
if (DBG) { |
| 1299 |
|
uint32_t Cost = Evaluate_Cost(Out,Mult,Bias, Zigzag,Non_Zero, Lambda); |
| 1300 |
|
if (DBG==1) { |
| 1301 |
|
printf( "<= " ); |
| 1302 |
|
for(i=0; i<=Last_Node; ++i) printf( "[%3.0d] ", Out[Zigzag[i]] ); |
| 1303 |
|
printf( "\n--------------------------------\n" ); |
| 1304 |
|
} |
| 1305 |
|
if (Cost>Last_Cost) printf( "!!! %u > %u\n", Cost, Last_Cost ); |
| 1306 |
|
} |
| 1307 |
|
return Last_Node; |
| 1308 |
|
} |
| 1309 |
|
|
| 1310 |
|
#undef DBG |
| 1311 |
|
|
| 1312 |
|
#endif |
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