dsputil_mmi.c
资源名称:tcpmp.rar [点击查看]
上传用户:wstnjxml
上传日期:2014-04-03
资源大小:7248k
文件大小:5k
源码类别:
Windows CE
开发平台:
C/C++
- /*
- * MMI optimized DSP utils
- * Copyright (c) 2000, 2001 Fabrice Bellard.
- *
- * This library 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 of the License, or (at your option) any later version.
- *
- * This library 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- * MMI optimization by Leon van Stuivenberg
- * clear_blocks_mmi() by BroadQ
- */
- #include "../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 nt"
- ".set mips3 nt"
- "ld $8, 0(%0) nt"
- "add %0, %0, %2 nt"
- "ld $9, 0(%0) nt"
- "add %0, %0, %2 nt"
- "ld $10, 0(%0) nt"
- "pextlb $8, $0, $8 nt"
- "sq $8, 0(%1) nt"
- "add %0, %0, %2 nt"
- "ld $8, 0(%0) nt"
- "pextlb $9, $0, $9 nt"
- "sq $9, 16(%1) nt"
- "add %0, %0, %2 nt"
- "ld $9, 0(%0) nt"
- "pextlb $10, $0, $10 nt"
- "sq $10, 32(%1) nt"
- "add %0, %0, %2 nt"
- "ld $10, 0(%0) nt"
- "pextlb $8, $0, $8 nt"
- "sq $8, 48(%1) nt"
- "add %0, %0, %2 nt"
- "ld $8, 0(%0) nt"
- "pextlb $9, $0, $9 nt"
- "sq $9, 64(%1) nt"
- "add %0, %0, %2 nt"
- "ld $9, 0(%0) nt"
- "pextlb $10, $0, $10 nt"
- "sq $10, 80(%1) nt"
- "pextlb $8, $0, $8 nt"
- "sq $8, 96(%1) nt"
- "pextlb $9, $0, $9 nt"
- "sq $9, 112(%1) nt"
- ".set pop nt"
- : "+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 nt"
- ".set mips3 nt"
- "1: nt"
- "ldr $8, 0(%1) nt"
- "addiu %2, %2, -1 nt"
- "ldl $8, 7(%1) nt"
- "add %1, %1, %3 nt"
- "sd $8, 0(%0) nt"
- "add %0, %0, %3 nt"
- "bgtz %2, 1b nt"
- ".set pop nt"
- : "+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 nt"
- ".set mips3 nt"
- "1: nt"
- "ldr $8, 0(%1) nt"
- "add $11, %1, %3 nt"
- "ldl $8, 7(%1) nt"
- "add $10, %0, %3 nt"
- "ldr $9, 8(%1) nt"
- "ldl $9, 15(%1) nt"
- "ldr $12, 0($11) nt"
- "add %1, $11, %3 nt"
- "ldl $12, 7($11) nt"
- "pcpyld $8, $9, $8 nt"
- "sq $8, 0(%0) nt"
- "ldr $13, 8($11) nt"
- "addiu %2, %2, -2 nt"
- "ldl $13, 15($11) nt"
- "add %0, $10, %3 nt"
- "pcpyld $12, $13, $12 nt"
- "sq $12, 0($10) nt"
- "bgtz %2, 1b nt"
- ".set pop nt"
- : "+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;
- }
- }