set.c
资源名称:X264CODEC.rar [点击查看]
上传用户:lctgjx
上传日期:2022-06-04
资源大小:8887k
文件大小:10k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*****************************************************************************
- * set.c: h264 encoder library
- *****************************************************************************
- * Copyright (C) 2005-2008 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., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
- *****************************************************************************/
- #include "common.h"
- #define SHIFT(x,s) ((s)<0 ? (x)<<-(s) : (s)==0 ? (x) : ((x)+(1<<((s)-1)))>>(s))
- #define DIV(n,d) (((n) + ((d)>>1)) / (d))
- 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 }
- };
- int 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 quant4_mf[4][6][4][4];
- int quant8_mf[2][6][8][8];
- int q, i, j, i_list;
- int deadzone[4] = { 32 - h->param.analyse.i_luma_deadzone[1],
- 32 - h->param.analyse.i_luma_deadzone[0],
- 32 - 11, 32 - 21 };
- int max_qp_err = -1;
- int max_chroma_qp_err = -1;
- for( i = 0; i < 6; i++ )
- {
- int size = i<4 ? 16 : 64;
- for( j = (i<4 ? 0 : 4); j < i; j++ )
- if( !memcmp( h->pps->scaling_list[i], h->pps->scaling_list[j], size*sizeof(uint8_t) ) )
- break;
- if( j < i )
- {
- h-> quant4_mf[i] = h-> quant4_mf[j];
- h->dequant4_mf[i] = h->dequant4_mf[j];
- h->unquant4_mf[i] = h->unquant4_mf[j];
- }
- else
- {
- CHECKED_MALLOC( h-> quant4_mf[i], 52*size*sizeof(uint16_t) );
- CHECKED_MALLOC( h->dequant4_mf[i], 6*size*sizeof(int) );
- CHECKED_MALLOC( h->unquant4_mf[i], 52*size*sizeof(int) );
- }
- for( j = (i<4 ? 0 : 4); j < i; j++ )
- if( deadzone[j&3] == deadzone[i&3] &&
- !memcmp( h->pps->scaling_list[i], h->pps->scaling_list[j], size*sizeof(uint8_t) ) )
- break;
- if( j < i )
- h->quant4_bias[i] = h->quant4_bias[j];
- else
- CHECKED_MALLOC( h->quant4_bias[i], 52*size*sizeof(uint16_t) );
- }
- 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];
- quant4_mf[i_list][q][0][i] = DIV(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];
- quant8_mf[i_list][q][0][i] = DIV(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] = (1ULL << (q/6 + 15 + 8)) / quant4_mf[i_list][q%6][0][i];
- h-> quant4_mf[i_list][q][i] = j = SHIFT(quant4_mf[i_list][q%6][0][i], q/6 - 1);
- // round to nearest, unless that would cause the deadzone to be negative
- h->quant4_bias[i_list][q][i] = X264_MIN( DIV(deadzone[i_list]<<10, j), (1<<15)/j );
- if( j > 0xffff && q > max_qp_err && (i_list == CQM_4IY || i_list == CQM_4PY) )
- max_qp_err = q;
- if( j > 0xffff && q > max_chroma_qp_err && (i_list == CQM_4IC || i_list == CQM_4PC) )
- max_chroma_qp_err = q;
- }
- if( h->param.analyse.b_transform_8x8 )
- for( i_list = 0; i_list < 2; i_list++ )
- for( i = 0; i < 64; i++ )
- {
- h->unquant8_mf[i_list][q][i] = (1ULL << (q/6 + 16 + 8)) / quant8_mf[i_list][q%6][0][i];
- h-> quant8_mf[i_list][q][i] = j = SHIFT(quant8_mf[i_list][q%6][0][i], q/6);
- h->quant8_bias[i_list][q][i] = X264_MIN( DIV(deadzone[i_list]<<10, j), (1<<15)/j );
- if( j > 0xffff && q > max_qp_err )
- max_qp_err = q;
- }
- }
- if( !h->mb.b_lossless && max_qp_err >= h->param.rc.i_qp_min )
- {
- x264_log( h, X264_LOG_ERROR, "Quantization overflow. Your CQM is incompatible with QP < %d,n", max_qp_err+1 );
- x264_log( h, X264_LOG_ERROR, "but min QP is set to %d.n", h->param.rc.i_qp_min );
- return -1;
- }
- if( !h->mb.b_lossless && max_chroma_qp_err >= h->chroma_qp_table[h->param.rc.i_qp_min] )
- {
- x264_log( h, X264_LOG_ERROR, "Quantization overflow. Your CQM is incompatible with QP < %d,n", max_chroma_qp_err+1 );
- x264_log( h, X264_LOG_ERROR, "but min chroma QP is implied to be %d.n", h->chroma_qp_table[h->param.rc.i_qp_min] );
- return -1;
- }
- return 0;
- fail:
- x264_cqm_delete( h );
- return -1;
- }
- void x264_cqm_delete( x264_t *h )
- {
- int i, j;
- for( i = 0; i < 6; i++ )
- {
- for( j = 0; j < i; j++ )
- if( h->quant4_mf[i] == h->quant4_mf[j] )
- break;
- if( j == i )
- {
- x264_free( h-> quant4_mf[i] );
- x264_free( h->dequant4_mf[i] );
- x264_free( h->unquant4_mf[i] );
- }
- for( j = 0; j < i; j++ )
- if( h->quant4_bias[i] == h->quant4_bias[j] )
- break;
- if( j == i )
- x264_free( h->quant4_bias[i] );
- }
- }
- static 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, " tn," )) && (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;
- }