/***************************************************************************** * set.c: h264 encoder library ***************************************************************************** * Copyright (C) 2005 x264 project * * Authors: Loren Merritt <lorenm@u.washington.edu> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA. *****************************************************************************/#include "common.h"#include <stdio.h>#include <string.h>static const int dequant4_scale[6][3] ={    { 10, 13, 16 },    { 11, 14, 18 },    { 13, 16, 20 },    { 14, 18, 23 },    { 16, 20, 25 },    { 18, 23, 29 }};static const int quant4_scale[6][3] ={    { 13107, 8066, 5243 },    { 11916, 7490, 4660 },    { 10082, 6554, 4194 },    {  9362, 5825, 3647 },    {  8192, 5243, 3355 },    {  7282, 4559, 2893 },};static const int quant8_scan[16] ={    0,3,4,3, 3,1,5,1, 4,5,2,5, 3,1,5,1};static const int dequant8_scale[6][6] ={    { 20, 18, 32, 19, 25, 24 },    { 22, 19, 35, 21, 28, 26 },    { 26, 23, 42, 24, 33, 31 },    { 28, 25, 45, 26, 35, 33 },    { 32, 28, 51, 30, 40, 38 },    { 36, 32, 58, 34, 46, 43 },};static const int quant8_scale[6][6] ={    { 13107, 11428, 20972, 12222, 16777, 15481 },    { 11916, 10826, 19174, 11058, 14980, 14290 },    { 10082,  8943, 15978,  9675, 12710, 11985 },    {  9362,  8228, 14913,  8931, 11984, 11259 },    {  8192,  7346, 13159,  7740, 10486,  9777 },    {  7282,  6428, 11570,  6830,  9118,  8640 }};void x264_cqm_init( x264_t *h ){    int def_quant4[6][16];    int def_quant8[6][64];    int def_dequant4[6][16];    int def_dequant8[6][64];    int q, i, i_list;    for( q = 0; q < 6; q++ )    {        for( i = 0; i < 16; i++ )        {            int j = (i&1) + ((i>>2)&1);            def_dequant4[q][i] = dequant4_scale[q][j];            def_quant4[q][i]   =   quant4_scale[q][j];        }        for( i = 0; i < 64; i++ )        {            int j = quant8_scan[((i>>1)&12) | (i&3)];            def_dequant8[q][i] = dequant8_scale[q][j];            def_quant8[q][i]   =   quant8_scale[q][j];        }    }    for( q = 0; q < 6; q++ )    {        for( i_list = 0; i_list < 4; i_list++ )            for( i = 0; i < 16; i++ )            {                h->dequant4_mf[i_list][q][0][i] = def_dequant4[q][i] * h->pps->scaling_list[i_list][i];                h->  quant4_mf[i_list][q][0][i] = def_quant4[q][i] * 16 / h->pps->scaling_list[i_list][i];            }        for( i_list = 0; i_list < 2; i_list++ )            for( i = 0; i < 64; i++ )            {                h->dequant8_mf[i_list][q][0][i] = def_dequant8[q][i] * h->pps->scaling_list[4+i_list][i];                h->  quant8_mf[i_list][q][0][i] = def_quant8[q][i] * 16 / h->pps->scaling_list[4+i_list][i];            }    }    for( q = 0; q < 52; q++ )    {        for( i_list = 0; i_list < 4; i_list++ )            for( i = 0; i < 16; i++ )                h->unquant4_mf[i_list][q][i] = (1 << (q/6 + 15 + 8)) / h->quant4_mf[i_list][q%6][0][i];        for( i_list = 0; i_list < 2; i_list++ )            for( i = 0; i < 64; i++ )                h->unquant8_mf[i_list][q][i] = (1 << (q/6 + 16 + 8)) / h->quant8_mf[i_list][q%6][0][i];    }}int x264_cqm_parse_jmlist( x264_t *h, const char *buf, const char *name,                           uint8_t *cqm, const uint8_t *jvt, int length ){    char *p;    char *nextvar;    int i;    p = strstr( buf, name );    if( !p )    {        memset( cqm, 16, length );        return 0;    }    p += strlen( name );    if( *p == 'U' || *p == 'V' )        p++;    nextvar = strstr( p, "INT" );    for( i = 0; i < length && (p = strpbrk( p, " \t\n," )) && (p = strpbrk( p, "0123456789" )); i++ )    {        int coef = -1;        sscanf( p, "%d", &coef );        if( i == 0 && coef == 0 )        {            memcpy( cqm, jvt, length );            return 0;        }        if( coef < 1 || coef > 255 )        {            x264_log( h, X264_LOG_ERROR, "bad coefficient in list '%s'\n", name );            return -1;        }        cqm[i] = coef;    }    if( (nextvar && p > nextvar) || i != length )    {        x264_log( h, X264_LOG_ERROR, "not enough coefficients in list '%s'\n", name );        return -1;    }    return 0;}int x264_cqm_parse_file( x264_t *h, const char *filename ){    char *buf, *p;    int b_error = 0;    h->param.i_cqm_preset = X264_CQM_CUSTOM;        buf = x264_slurp_file( filename );    if( !buf )    {        x264_log( h, X264_LOG_ERROR, "can't open file '%s'\n", filename );        return -1;    }    while( (p = strchr( buf, '#' )) != NULL )        memset( p, ' ', strcspn( p, "\n" ) );    b_error |= x264_cqm_parse_jmlist( h, buf, "INTRA4X4_LUMA",   h->param.cqm_4iy, x264_cqm_jvt4i, 16 );    b_error |= x264_cqm_parse_jmlist( h, buf, "INTRA4X4_CHROMA", h->param.cqm_4ic, x264_cqm_jvt4i, 16 );    b_error |= x264_cqm_parse_jmlist( h, buf, "INTER4X4_LUMA",   h->param.cqm_4py, x264_cqm_jvt4p, 16 );    b_error |= x264_cqm_parse_jmlist( h, buf, "INTER4X4_CHROMA", h->param.cqm_4pc, x264_cqm_jvt4p, 16 );    b_error |= x264_cqm_parse_jmlist( h, buf, "INTRA8X8_LUMA",   h->param.cqm_8iy, x264_cqm_jvt8i, 64 );    b_error |= x264_cqm_parse_jmlist( h, buf, "INTER8X8_LUMA",   h->param.cqm_8py, x264_cqm_jvt8p, 64 );    x264_free( buf );    return b_error;}