1/* 2 * MMI optimized DSP utils 3 * Copyright (c) 2000, 2001 Fabrice Bellard 4 * 5 * MMI optimization by Leon van Stuivenberg 6 * clear_blocks_mmi() by BroadQ 7 * 8 * This file is part of FFmpeg. 9 * 10 * FFmpeg is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU Lesser General Public 12 * License as published by the Free Software Foundation; either 13 * version 2.1 of the License, or (at your option) any later version. 14 * 15 * FFmpeg is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * Lesser General Public License for more details. 19 * 20 * You should have received a copy of the GNU Lesser General Public 21 * License along with FFmpeg; if not, write to the Free Software 22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 23 */ 24 25#include "libavcodec/dsputil.h" 26#include "mmi.h" 27 28void ff_mmi_idct_put(uint8_t *dest, int line_size, DCTELEM *block); 29void ff_mmi_idct_add(uint8_t *dest, int line_size, DCTELEM *block); 30void ff_mmi_idct(DCTELEM *block); 31 32static void clear_blocks_mmi(DCTELEM * blocks) 33{ 34 __asm__ volatile( 35 ".set noreorder \n" 36 "addiu $9, %0, 768 \n" 37 "nop \n" 38 "1: \n" 39 "sq $0, 0(%0) \n" 40 "move $8, %0 \n" 41 "addi %0, %0, 64 \n" 42 "sq $0, 16($8) \n" 43 "slt $10, %0, $9 \n" 44 "sq $0, 32($8) \n" 45 "bnez $10, 1b \n" 46 "sq $0, 48($8) \n" 47 ".set reorder \n" 48 : "+r" (blocks) :: "$8", "$9", "memory" ); 49} 50 51 52static void get_pixels_mmi(DCTELEM *block, const uint8_t *pixels, int line_size) 53{ 54 __asm__ volatile( 55 ".set push \n\t" 56 ".set mips3 \n\t" 57 "ld $8, 0(%0) \n\t" 58 "add %0, %0, %2 \n\t" 59 "ld $9, 0(%0) \n\t" 60 "add %0, %0, %2 \n\t" 61 "ld $10, 0(%0) \n\t" 62 "pextlb $8, $0, $8 \n\t" 63 "sq $8, 0(%1) \n\t" 64 "add %0, %0, %2 \n\t" 65 "ld $8, 0(%0) \n\t" 66 "pextlb $9, $0, $9 \n\t" 67 "sq $9, 16(%1) \n\t" 68 "add %0, %0, %2 \n\t" 69 "ld $9, 0(%0) \n\t" 70 "pextlb $10, $0, $10 \n\t" 71 "sq $10, 32(%1) \n\t" 72 "add %0, %0, %2 \n\t" 73 "ld $10, 0(%0) \n\t" 74 "pextlb $8, $0, $8 \n\t" 75 "sq $8, 48(%1) \n\t" 76 "add %0, %0, %2 \n\t" 77 "ld $8, 0(%0) \n\t" 78 "pextlb $9, $0, $9 \n\t" 79 "sq $9, 64(%1) \n\t" 80 "add %0, %0, %2 \n\t" 81 "ld $9, 0(%0) \n\t" 82 "pextlb $10, $0, $10 \n\t" 83 "sq $10, 80(%1) \n\t" 84 "pextlb $8, $0, $8 \n\t" 85 "sq $8, 96(%1) \n\t" 86 "pextlb $9, $0, $9 \n\t" 87 "sq $9, 112(%1) \n\t" 88 ".set pop \n\t" 89 : "+r" (pixels) : "r" (block), "r" (line_size) : "$8", "$9", "$10", "memory" ); 90} 91 92 93static void put_pixels8_mmi(uint8_t *block, const uint8_t *pixels, int line_size, int h) 94{ 95 __asm__ volatile( 96 ".set push \n\t" 97 ".set mips3 \n\t" 98 "1: \n\t" 99 "ldr $8, 0(%1) \n\t" 100 "addiu %2, %2, -1 \n\t" 101 "ldl $8, 7(%1) \n\t" 102 "add %1, %1, %3 \n\t" 103 "sd $8, 0(%0) \n\t" 104 "add %0, %0, %3 \n\t" 105 "bgtz %2, 1b \n\t" 106 ".set pop \n\t" 107 : "+r" (block), "+r" (pixels), "+r" (h) : "r" (line_size) 108 : "$8", "memory" ); 109} 110 111 112static void put_pixels16_mmi(uint8_t *block, const uint8_t *pixels, int line_size, int h) 113{ 114 __asm__ volatile ( 115 ".set push \n\t" 116 ".set mips3 \n\t" 117 "1: \n\t" 118 "ldr $8, 0(%1) \n\t" 119 "add $11, %1, %3 \n\t" 120 "ldl $8, 7(%1) \n\t" 121 "add $10, %0, %3 \n\t" 122 "ldr $9, 8(%1) \n\t" 123 "ldl $9, 15(%1) \n\t" 124 "ldr $12, 0($11) \n\t" 125 "add %1, $11, %3 \n\t" 126 "ldl $12, 7($11) \n\t" 127 "pcpyld $8, $9, $8 \n\t" 128 "sq $8, 0(%0) \n\t" 129 "ldr $13, 8($11) \n\t" 130 "addiu %2, %2, -2 \n\t" 131 "ldl $13, 15($11) \n\t" 132 "add %0, $10, %3 \n\t" 133 "pcpyld $12, $13, $12 \n\t" 134 "sq $12, 0($10) \n\t" 135 "bgtz %2, 1b \n\t" 136 ".set pop \n\t" 137 : "+r" (block), "+r" (pixels), "+r" (h) : "r" (line_size) 138 : "$8", "$9", "$10", "$11", "$12", "$13", "memory" ); 139} 140 141 142void dsputil_init_mmi(DSPContext* c, AVCodecContext *avctx) 143{ 144 const int idct_algo= avctx->idct_algo; 145 146 c->clear_blocks = clear_blocks_mmi; 147 148 c->put_pixels_tab[1][0] = put_pixels8_mmi; 149 c->put_no_rnd_pixels_tab[1][0] = put_pixels8_mmi; 150 151 c->put_pixels_tab[0][0] = put_pixels16_mmi; 152 c->put_no_rnd_pixels_tab[0][0] = put_pixels16_mmi; 153 154 c->get_pixels = get_pixels_mmi; 155 156 if(idct_algo==FF_IDCT_AUTO || idct_algo==FF_IDCT_PS2){ 157 c->idct_put= ff_mmi_idct_put; 158 c->idct_add= ff_mmi_idct_add; 159 c->idct = ff_mmi_idct; 160 c->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM; 161 } 162} 163 164