--- quant_matrix.c 2002/12/19 00:40:32 1.5.2.2 +++ quant_matrix.c 2002/09/07 14:16:13 1.7 @@ -1,12 +1,50 @@ +/***************************************************************************** + * + * XVID MPEG-4 VIDEO CODEC + * - Custom matrix quantization functions - + * + * Copyright(C) 2002 Michael Militzer + * + * This program is an implementation of a part of one or more MPEG-4 + * Video tools as specified in ISO/IEC 14496-2 standard. Those intending + * to use this software module in hardware or software products are + * advised that its use may infringe existing patents or copyrights, and + * any such use would be at such party's own risk. The original + * developer of this software module and his/her company, and subsequent + * editors and their companies, will have no liability for use of this + * software or modifications or derivatives thereof. + * + * 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 02111-1307 USA + * + * $Id: quant_matrix.c,v 1.7 2002/09/07 14:16:13 edgomez Exp $ + * + ****************************************************************************/ + #include "quant_matrix.h" -#define FIX(X) (((X)==1) ? 0xFFFF : ((1UL << 16) / (X) + 1)) -#define FIXL(X) ((1UL << 16) / (X) - 1) +#define FIX(X) (1 << 16) / (X) + 1 + +/***************************************************************************** + * Local data + ****************************************************************************/ +/* ToDo : remove all this local to make this module thread safe */ uint8_t custom_intra_matrix = 0; uint8_t custom_inter_matrix = 0; -uint8_t default_intra_matrix[64] = { +uint8_t const default_intra_matrix[64] = { 8, 17, 18, 19, 21, 23, 25, 27, 17, 18, 19, 21, 23, 25, 27, 28, 20, 21, 22, 23, 24, 26, 28, 30, @@ -28,41 +66,7 @@ 27, 28, 30, 32, 35, 38, 41, 45 }; -uint16_t intra_matrix_fixfix[64] = { - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0 -}; - -uint16_t inter_matrix_fixfix[64] = { - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0 -}; - -uint16_t intra_matrix1[64] = { - 8>>1, 17>>1, 18>>1, 19>>1, 21>>1, 23>>1, 25>>1, 27>>1, - 17>>1, 18>>1, 19>>1, 21>>1, 23>>1, 25>>1, 27>>1, 28>>1, - 20>>1, 21>>1, 22>>1, 23>>1, 24>>1, 26>>1, 28>>1, 30>>1, - 21>>1, 22>>1, 23>>1, 24>>1, 26>>1, 28>>1, 30>>1, 32>>1, - 22>>1, 23>>1, 24>>1, 26>>1, 28>>1, 30>>1, 32>>1, 35>>1, - 23>>1, 24>>1, 26>>1, 28>>1, 30>>1, 32>>1, 35>>1, 38>>1, - 25>>1, 26>>1, 28>>1, 30>>1, 32>>1, 35>>1, 38>>1, 41>>1, - 27>>1, 28>>1, 30>>1, 32>>1, 35>>1, 38>>1, 41>>1, 45>>1 -}; - - -uint16_t intra_matrix_fix[64] = { +int16_t intra_matrix_fix[64] = { FIX(8), FIX(17), FIX(18), FIX(19), FIX(21), FIX(23), FIX(25), FIX(27), FIX(17), FIX(18), FIX(19), FIX(21), FIX(23), FIX(25), FIX(27), FIX(28), FIX(20), FIX(21), FIX(22), FIX(23), FIX(24), FIX(26), FIX(28), FIX(30), @@ -73,29 +77,7 @@ FIX(27), FIX(28), FIX(30), FIX(32), FIX(35), FIX(38), FIX(41), FIX(45) }; -uint16_t intra_matrix_fixl[64] = { - FIXL(8), FIXL(17), FIXL(18), FIXL(19), FIXL(21), FIXL(23), FIXL(25), FIXL(27), - FIXL(17), FIXL(18), FIXL(19), FIXL(21), FIXL(23), FIXL(25), FIXL(27), FIXL(28), - FIXL(20), FIXL(21), FIXL(22), FIXL(23), FIXL(24), FIXL(26), FIXL(28), FIXL(30), - FIXL(21), FIXL(22), FIXL(23), FIXL(24), FIXL(26), FIXL(28), FIXL(30), FIXL(32), - FIXL(22), FIXL(23), FIXL(24), FIXL(26), FIXL(28), FIXL(30), FIXL(32), FIXL(35), - FIXL(23), FIXL(24), FIXL(26), FIXL(28), FIXL(30), FIXL(32), FIXL(35), FIXL(38), - FIXL(25), FIXL(26), FIXL(28), FIXL(30), FIXL(32), FIXL(35), FIXL(38), FIXL(41), - FIXL(27), FIXL(28), FIXL(30), FIXL(32), FIXL(35), FIXL(38), FIXL(41), FIXL(45) -}; - -uint16_t inter_matrix_fixl[64] = { - FIXL(16), FIXL(17), FIXL(18), FIXL(19), FIXL(20), FIXL(21), FIXL(22), FIXL(23), - FIXL(17), FIXL(18), FIXL(19), FIXL(20), FIXL(21), FIXL(22), FIXL(23), FIXL(24), - FIXL(18), FIXL(19), FIXL(20), FIXL(21), FIXL(22), FIXL(23), FIXL(24), FIXL(25), - FIXL(19), FIXL(20), FIXL(21), FIXL(22), FIXL(23), FIXL(24), FIXL(26), FIXL(27), - FIXL(20), FIXL(21), FIXL(22), FIXL(23), FIXL(25), FIXL(26), FIXL(27), FIXL(28), - FIXL(21), FIXL(22), FIXL(23), FIXL(24), FIXL(26), FIXL(27), FIXL(28), FIXL(30), - FIXL(22), FIXL(23), FIXL(24), FIXL(26), FIXL(27), FIXL(28), FIXL(30), FIXL(31), - FIXL(23), FIXL(24), FIXL(25), FIXL(27), FIXL(28), FIXL(30), FIXL(31), FIXL(33) -}; - -uint8_t default_inter_matrix[64] = { +uint8_t const default_inter_matrix[64] = { 16, 17, 18, 19, 20, 21, 22, 23, 17, 18, 19, 20, 21, 22, 23, 24, 18, 19, 20, 21, 22, 23, 24, 25, @@ -116,18 +98,8 @@ 22, 23, 24, 26, 27, 28, 30, 31, 23, 24, 25, 27, 28, 30, 31, 33 }; -uint16_t inter_matrix1[64] = { - 16>>1, 17>>1, 18>>1, 19>>1, 20>>1, 21>>1, 22>>1, 23>>1, - 17>>1, 18>>1, 19>>1, 20>>1, 21>>1, 22>>1, 23>>1, 24>>1, - 18>>1, 19>>1, 20>>1, 21>>1, 22>>1, 23>>1, 24>>1, 25>>1, - 19>>1, 20>>1, 21>>1, 22>>1, 23>>1, 24>>1, 26>>1, 27>>1, - 20>>1, 21>>1, 22>>1, 23>>1, 25>>1, 26>>1, 27>>1, 28>>1, - 21>>1, 22>>1, 23>>1, 24>>1, 26>>1, 27>>1, 28>>1, 30>>1, - 22>>1, 23>>1, 24>>1, 26>>1, 27>>1, 28>>1, 30>>1, 31>>1, - 23>>1, 24>>1, 25>>1, 27>>1, 28>>1, 30>>1, 31>>1, 33>>1 -}; -uint16_t inter_matrix_fix[64] = { +int16_t inter_matrix_fix[64] = { FIX(16), FIX(17), FIX(18), FIX(19), FIX(20), FIX(21), FIX(22), FIX(23), FIX(17), FIX(18), FIX(19), FIX(20), FIX(21), FIX(22), FIX(23), FIX(24), FIX(18), FIX(19), FIX(20), FIX(21), FIX(22), FIX(23), FIX(24), FIX(25), @@ -138,6 +110,10 @@ FIX(23), FIX(24), FIX(25), FIX(27), FIX(28), FIX(30), FIX(31), FIX(33) }; +/***************************************************************************** + * Functions + ****************************************************************************/ + uint8_t get_intra_matrix_status(void) { @@ -199,10 +175,8 @@ if (intra_matrix[i] != matrix[i]) change = 1; - intra_matrix1[i] = ((intra_matrix[i] = (int16_t) matrix[i])>>1); - intra_matrix1[i] += ((intra_matrix[i] == 1) ? 1: 0); + intra_matrix[i] = (int16_t) matrix[i]; intra_matrix_fix[i] = FIX(intra_matrix[i]); - intra_matrix_fixl[i] = FIXL(intra_matrix[i]); } return custom_intra_matrix | change; } @@ -221,10 +195,8 @@ if (inter_matrix[i] != matrix[i]) change = 1; - inter_matrix1[i] = ((inter_matrix[i] = (int16_t) matrix[i])>>1); - inter_matrix1[i] += ((inter_matrix[i] == 1) ? 1: 0); + inter_matrix[i] = (int16_t) matrix[i]; inter_matrix_fix[i] = FIX(inter_matrix[i]); - inter_matrix_fixl[i] = FIXL(inter_matrix[i]); } return custom_inter_matrix | change; }