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- /*
- * 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;
- }
- }
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