229 lines
7 KiB
C
229 lines
7 KiB
C
/*****************************************************************************
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* set.c: h264 encoder library
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*****************************************************************************
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* Copyright (C) 2005 x264 project
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*
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* Authors: Loren Merritt <lorenm@u.washington.edu>
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*
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* This program is CC_free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* 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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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* 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, USA.
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*****************************************************************************/
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#include "common.h"
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#include <stdio.h>
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#include <string.h>
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static const int dequant4_scale[6][3] =
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{
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{ 10, 13, 16 },
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{ 11, 14, 18 },
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{ 13, 16, 20 },
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{ 14, 18, 23 },
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{ 16, 20, 25 },
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{ 18, 23, 29 }
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};
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static const int quant4_scale[6][3] =
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{
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{ 13107, 8066, 5243 },
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{ 11916, 7490, 4660 },
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{ 10082, 6554, 4194 },
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{ 9362, 5825, 3647 },
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{ 8192, 5243, 3355 },
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{ 7282, 4559, 2893 },
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};
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static const int quant8_scan[16] =
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{
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0,3,4,3, 3,1,5,1, 4,5,2,5, 3,1,5,1
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};
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static const int dequant8_scale[6][6] =
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{
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{ 20, 18, 32, 19, 25, 24 },
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{ 22, 19, 35, 21, 28, 26 },
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{ 26, 23, 42, 24, 33, 31 },
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{ 28, 25, 45, 26, 35, 33 },
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{ 32, 28, 51, 30, 40, 38 },
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{ 36, 32, 58, 34, 46, 43 },
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};
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static const int quant8_scale[6][6] =
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{
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{ 13107, 11428, 20972, 12222, 16777, 15481 },
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{ 11916, 10826, 19174, 11058, 14980, 14290 },
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{ 10082, 8943, 15978, 9675, 12710, 11985 },
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{ 9362, 8228, 14913, 8931, 11984, 11259 },
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{ 8192, 7346, 13159, 7740, 10486, 9777 },
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{ 7282, 6428, 11570, 6830, 9118, 8640 }
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};
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void x264_cqm_init( x264_t *h )
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{
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int def_quant4[6][16];
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int def_quant8[6][64];
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int def_dequant4[6][16];
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int def_dequant8[6][64];
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int q, i, j, i_list;
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for( i = 0; i < 6; i++ )
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{
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int size = i<4 ? 16 : 64;
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for( j = (i<4 ? 0 : 4); j < i; j++ )
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if( !memcmp( h->pps->scaling_list[i], h->pps->scaling_list[j], size*sizeof(uint8_t) ) )
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break;
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if( j < i )
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{
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h-> quant4_mf[i] = h-> quant4_mf[j];
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h->dequant4_mf[i] = h->dequant4_mf[j];
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h->unquant4_mf[i] = h->unquant4_mf[j];
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}
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else
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{
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h-> quant4_mf[i] = x264_malloc( 6*size*sizeof(int) );
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h->dequant4_mf[i] = x264_malloc( 6*size*sizeof(int) );
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h->unquant4_mf[i] = x264_malloc(52*size*sizeof(int) );
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}
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}
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for( q = 0; q < 6; q++ )
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{
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for( i = 0; i < 16; i++ )
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{
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int j = (i&1) + ((i>>2)&1);
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def_dequant4[q][i] = dequant4_scale[q][j];
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def_quant4[q][i] = quant4_scale[q][j];
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}
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for( i = 0; i < 64; i++ )
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{
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int j = quant8_scan[((i>>1)&12) | (i&3)];
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def_dequant8[q][i] = dequant8_scale[q][j];
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def_quant8[q][i] = quant8_scale[q][j];
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}
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}
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for( q = 0; q < 6; q++ )
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{
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for( i_list = 0; i_list < 4; i_list++ )
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for( i = 0; i < 16; i++ )
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{
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h->dequant4_mf[i_list][q][0][i] = def_dequant4[q][i] * h->pps->scaling_list[i_list][i];
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h-> quant4_mf[i_list][q][0][i] = def_quant4[q][i] * 16 / h->pps->scaling_list[i_list][i];
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}
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for( i_list = 0; i_list < 2; i_list++ )
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for( i = 0; i < 64; i++ )
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{
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h->dequant8_mf[i_list][q][0][i] = def_dequant8[q][i] * h->pps->scaling_list[4+i_list][i];
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h-> quant8_mf[i_list][q][0][i] = def_quant8[q][i] * 16 / h->pps->scaling_list[4+i_list][i];
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}
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}
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for( q = 0; q < 52; q++ )
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{
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for( i_list = 0; i_list < 4; i_list++ )
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for( i = 0; i < 16; i++ )
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h->unquant4_mf[i_list][q][i] = (1 << (q/6 + 15 + 8)) / h->quant4_mf[i_list][q%6][0][i];
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for( i_list = 0; i_list < 2; i_list++ )
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for( i = 0; i < 64; i++ )
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h->unquant8_mf[i_list][q][i] = (1 << (q/6 + 16 + 8)) / h->quant8_mf[i_list][q%6][0][i];
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}
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}
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void x264_cqm_delete( x264_t *h )
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{
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int i, j;
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for( i = 0; i < 6; i++ )
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{
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for( j = 0; j < i; j++ )
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if( h->quant4_mf[i] == h->quant4_mf[j] )
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break;
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if( j == i )
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{
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x264_free( h-> quant4_mf[i] );
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x264_free( h->dequant4_mf[i] );
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x264_free( h->unquant4_mf[i] );
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}
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}
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}
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int x264_cqm_parse_jmlist( x264_t *h, const char *buf, const char *name,
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uint8_t *cqm, const uint8_t *jvt, int length )
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{
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char *p;
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char *nextvar;
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int i;
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p = strstr( buf, name );
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if( !p )
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{
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memset( cqm, 16, length );
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return 0;
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}
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p += strlen( name );
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if( *p == 'U' || *p == 'V' )
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p++;
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nextvar = strstr( p, "INT" );
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for( i = 0; i < length && (p = strpbrk( p, " \t\n," )) && (p = strpbrk( p, "0123456789" )); i++ )
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{
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int coef = -1;
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sscanf( p, "%d", &coef );
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if( i == 0 && coef == 0 )
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{
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memcpy( cqm, jvt, length );
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return 0;
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}
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if( coef < 1 || coef > 255 )
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{
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x264_log( h, X264_LOG_ERROR, "bad coefficient in list '%s'\n", name );
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return -1;
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}
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cqm[i] = coef;
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}
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if( (nextvar && p > nextvar) || i != length )
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{
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x264_log( h, X264_LOG_ERROR, "not enough coefficients in list '%s'\n", name );
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return -1;
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}
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return 0;
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}
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int x264_cqm_parse_file( x264_t *h, const char *filename )
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{
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char *buf, *p;
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int b_error = 0;
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h->param.i_cqm_preset = X264_CQM_CUSTOM;
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buf = x264_slurp_file( filename );
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if( !buf )
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{
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x264_log( h, X264_LOG_ERROR, "can't open file '%s'\n", filename );
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return -1;
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}
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while( (p = strchr( buf, '#' )) != NULL )
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memset( p, ' ', strcspn( p, "\n" ) );
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b_error |= x264_cqm_parse_jmlist( h, buf, "INTRA4X4_LUMA", h->param.cqm_4iy, x264_cqm_jvt4i, 16 );
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b_error |= x264_cqm_parse_jmlist( h, buf, "INTRA4X4_CHROMA", h->param.cqm_4ic, x264_cqm_jvt4i, 16 );
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b_error |= x264_cqm_parse_jmlist( h, buf, "INTER4X4_LUMA", h->param.cqm_4py, x264_cqm_jvt4p, 16 );
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b_error |= x264_cqm_parse_jmlist( h, buf, "INTER4X4_CHROMA", h->param.cqm_4pc, x264_cqm_jvt4p, 16 );
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b_error |= x264_cqm_parse_jmlist( h, buf, "INTRA8X8_LUMA", h->param.cqm_8iy, x264_cqm_jvt8i, 64 );
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b_error |= x264_cqm_parse_jmlist( h, buf, "INTER8X8_LUMA", h->param.cqm_8py, x264_cqm_jvt8p, 64 );
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x264_free( buf );
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return b_error;
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}
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