| /* |
| * MMI optimized DSP utils |
| * Copyright (c) 2000, 2001 Fabrice Bellard |
| * |
| * MMI optimization by Leon van Stuivenberg |
| * clear_blocks_mmi() by BroadQ |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg 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 |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "libavcodec/dsputil.h" |
| #include "mmi.h" |
| |
| void ff_mmi_idct_put(uint8_t *dest, int line_size, DCTELEM *block); |
| void ff_mmi_idct_add(uint8_t *dest, int line_size, DCTELEM *block); |
| void ff_mmi_idct(DCTELEM *block); |
| |
| static void clear_blocks_mmi(DCTELEM * blocks) |
| { |
| __asm__ volatile( |
| ".set noreorder \n" |
| "addiu $9, %0, 768 \n" |
| "nop \n" |
| "1: \n" |
| "sq $0, 0(%0) \n" |
| "move $8, %0 \n" |
| "addi %0, %0, 64 \n" |
| "sq $0, 16($8) \n" |
| "slt $10, %0, $9 \n" |
| "sq $0, 32($8) \n" |
| "bnez $10, 1b \n" |
| "sq $0, 48($8) \n" |
| ".set reorder \n" |
| : "+r" (blocks) :: "$8", "$9", "memory" ); |
| } |
| |
| |
| static void get_pixels_mmi(DCTELEM *block, const uint8_t *pixels, int line_size) |
| { |
| __asm__ volatile( |
| ".set push \n\t" |
| ".set mips3 \n\t" |
| "ld $8, 0(%0) \n\t" |
| "add %0, %0, %2 \n\t" |
| "ld $9, 0(%0) \n\t" |
| "add %0, %0, %2 \n\t" |
| "ld $10, 0(%0) \n\t" |
| "pextlb $8, $0, $8 \n\t" |
| "sq $8, 0(%1) \n\t" |
| "add %0, %0, %2 \n\t" |
| "ld $8, 0(%0) \n\t" |
| "pextlb $9, $0, $9 \n\t" |
| "sq $9, 16(%1) \n\t" |
| "add %0, %0, %2 \n\t" |
| "ld $9, 0(%0) \n\t" |
| "pextlb $10, $0, $10 \n\t" |
| "sq $10, 32(%1) \n\t" |
| "add %0, %0, %2 \n\t" |
| "ld $10, 0(%0) \n\t" |
| "pextlb $8, $0, $8 \n\t" |
| "sq $8, 48(%1) \n\t" |
| "add %0, %0, %2 \n\t" |
| "ld $8, 0(%0) \n\t" |
| "pextlb $9, $0, $9 \n\t" |
| "sq $9, 64(%1) \n\t" |
| "add %0, %0, %2 \n\t" |
| "ld $9, 0(%0) \n\t" |
| "pextlb $10, $0, $10 \n\t" |
| "sq $10, 80(%1) \n\t" |
| "pextlb $8, $0, $8 \n\t" |
| "sq $8, 96(%1) \n\t" |
| "pextlb $9, $0, $9 \n\t" |
| "sq $9, 112(%1) \n\t" |
| ".set pop \n\t" |
| : "+r" (pixels) : "r" (block), "r" (line_size) : "$8", "$9", "$10", "memory" ); |
| } |
| |
| |
| static void put_pixels8_mmi(uint8_t *block, const uint8_t *pixels, int line_size, int h) |
| { |
| __asm__ volatile( |
| ".set push \n\t" |
| ".set mips3 \n\t" |
| "1: \n\t" |
| "ldr $8, 0(%1) \n\t" |
| "addiu %2, %2, -1 \n\t" |
| "ldl $8, 7(%1) \n\t" |
| "add %1, %1, %3 \n\t" |
| "sd $8, 0(%0) \n\t" |
| "add %0, %0, %3 \n\t" |
| "bgtz %2, 1b \n\t" |
| ".set pop \n\t" |
| : "+r" (block), "+r" (pixels), "+r" (h) : "r" (line_size) |
| : "$8", "memory" ); |
| } |
| |
| |
| static void put_pixels16_mmi(uint8_t *block, const uint8_t *pixels, int line_size, int h) |
| { |
| __asm__ volatile ( |
| ".set push \n\t" |
| ".set mips3 \n\t" |
| "1: \n\t" |
| "ldr $8, 0(%1) \n\t" |
| "add $11, %1, %3 \n\t" |
| "ldl $8, 7(%1) \n\t" |
| "add $10, %0, %3 \n\t" |
| "ldr $9, 8(%1) \n\t" |
| "ldl $9, 15(%1) \n\t" |
| "ldr $12, 0($11) \n\t" |
| "add %1, $11, %3 \n\t" |
| "ldl $12, 7($11) \n\t" |
| "pcpyld $8, $9, $8 \n\t" |
| "sq $8, 0(%0) \n\t" |
| "ldr $13, 8($11) \n\t" |
| "addiu %2, %2, -2 \n\t" |
| "ldl $13, 15($11) \n\t" |
| "add %0, $10, %3 \n\t" |
| "pcpyld $12, $13, $12 \n\t" |
| "sq $12, 0($10) \n\t" |
| "bgtz %2, 1b \n\t" |
| ".set pop \n\t" |
| : "+r" (block), "+r" (pixels), "+r" (h) : "r" (line_size) |
| : "$8", "$9", "$10", "$11", "$12", "$13", "memory" ); |
| } |
| |
| |
| void dsputil_init_mmi(DSPContext* c, AVCodecContext *avctx) |
| { |
| const int idct_algo= avctx->idct_algo; |
| |
| c->clear_blocks = clear_blocks_mmi; |
| |
| c->put_pixels_tab[1][0] = put_pixels8_mmi; |
| c->put_no_rnd_pixels_tab[1][0] = put_pixels8_mmi; |
| |
| c->put_pixels_tab[0][0] = put_pixels16_mmi; |
| c->put_no_rnd_pixels_tab[0][0] = put_pixels16_mmi; |
| |
| c->get_pixels = get_pixels_mmi; |
| |
| if(idct_algo==FF_IDCT_AUTO || idct_algo==FF_IDCT_PS2){ |
| c->idct_put= ff_mmi_idct_put; |
| c->idct_add= ff_mmi_idct_add; |
| c->idct = ff_mmi_idct; |
| c->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM; |
| } |
| } |
| |