mirror of
https://github.com/FFmpeg/FFmpeg.git
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133 lines
3.9 KiB
C
133 lines
3.9 KiB
C
/*
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* MMI optimized DSP utils
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* Copyright (c) 2000, 2001 Fabrice Bellard.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* MMI optimization by Leon van Stuivenberg <leonvs@iae.nl>
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* clear_blocks_mmi() by BroadQ
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*/
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#include "../dsputil.h"
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#include "mmi.h"
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void ff_mmi_idct_put(uint8_t *dest, int line_size, DCTELEM *block);
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void ff_mmi_idct_add(uint8_t *dest, int line_size, DCTELEM *block);
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static void clear_blocks_mmi(DCTELEM * blocks)
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{
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asm volatile(
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".set noreorder \n"
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"addiu $9, %0, 768 \n"
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"nop \n"
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"1: \n"
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"sq $0, 0(%0) \n"
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"move $8, %0 \n"
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"addi %0, %0, 64 \n"
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"sq $0, 16($8) \n"
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"slt $10, %0, $9 \n"
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"sq $0, 32($8) \n"
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"bnez $10, 1b \n"
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"sq $0, 48($8) \n"
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".set reorder \n"
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: "+r" (blocks) :: "$8", "$9", "memory" );
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}
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static void get_pixels_mmi(DCTELEM *block, const uint8_t *pixels, int line_size)
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{
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int i;
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for(i=0;i<8;i++) {
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asm volatile(
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".set push \n\t"
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".set mips3 \n\t"
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"ld $8, 0(%1) \n\t"
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"add %1, %1, %2 \n\t"
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"pextlb $8, $0, $8 \n\t"
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"sq $8, 0(%0) \n\t"
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".set pop \n\t"
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:: "r" (block), "r" (pixels), "r" (line_size) : "$8", "memory" );
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block += 8;
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}
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}
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static void put_pixels8_mmi(uint8_t *block, const uint8_t *pixels, int line_size, int h)
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{
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int i;
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for(i=0; i<h; i++) {
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asm volatile(
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".set push \n\t"
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".set mips3 \n\t"
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"ldr $8, 0(%1) \n\t"
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"ldl $8, 7(%1) \n\t"
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"add %1, %1, %2 \n\t"
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"sd $8, 0(%0) \n\t"
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"add %0, %0, %2 \n\t"
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".set pop \n\t"
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:: "r" (block), "r" (pixels), "r" (line_size) : "$8", "memory" );
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}
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}
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static void put_pixels16_mmi(uint8_t *block, const uint8_t *pixels, int line_size, int h)
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{
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int i;
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for(i=0; i<(h>>2); i++) {
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asm volatile (
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".set push \n\t"
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".set mips3 \n\t"
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#define PUTPIX16 \
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"ldr $8, 0(%1) \n\t" \
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"ldl $8, 7(%1) \n\t" \
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"ldr $9, 8(%1) \n\t" \
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"ldl $9, 15(%1) \n\t" \
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"add %1, %1, %2 \n\t" \
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"pcpyld $8, $9, $8 \n\t" \
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"sq $8, 0(%0) \n\t" \
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"add %0, %0, %2 \n\t"
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PUTPIX16
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PUTPIX16
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PUTPIX16
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PUTPIX16
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".set pop \n\t"
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:: "r" (block), "r" (pixels), "r" (line_size) : "$8", "$9", "memory" );
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}
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}
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void dsputil_init_mmi(DSPContext* c, AVCodecContext *avctx)
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{
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const int idct_algo= avctx->idct_algo;
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c->clear_blocks = clear_blocks_mmi;
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c->put_pixels_tab[1][0] = put_pixels8_mmi;
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c->put_no_rnd_pixels_tab[1][0] = put_pixels8_mmi;
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c->put_pixels_tab[0][0] = put_pixels16_mmi;
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c->put_no_rnd_pixels_tab[0][0] = put_pixels16_mmi;
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c->get_pixels = get_pixels_mmi;
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if(idct_algo==FF_IDCT_AUTO || idct_algo==FF_IDCT_PS2){
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c->idct_put= ff_mmi_idct_put;
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c->idct_add= ff_mmi_idct_add;
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c->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM;
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}
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}
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