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be449fca79
Neither the asm() nor the __asm__() keyword is part of the C99 standard, but while GCC accepts the former in C89 syntax, it is not accepted in C99 unless GNU extensions are turned on (with -fasm). The latter form is accepted in any syntax as an extension (without requiring further command-line options). Sun Studio C99 compiler also does not accept asm() while accepting __asm__(), albeit reporting warnings that it's not valid C99 syntax. Originally committed as revision 15627 to svn://svn.ffmpeg.org/ffmpeg/trunk
164 lines
5.4 KiB
C
164 lines
5.4 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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* MMI optimization by Leon van Stuivenberg
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* clear_blocks_mmi() by BroadQ
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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 FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavcodec/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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void ff_mmi_idct(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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__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(%0) \n\t"
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"add %0, %0, %2 \n\t"
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"ld $9, 0(%0) \n\t"
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"add %0, %0, %2 \n\t"
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"ld $10, 0(%0) \n\t"
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"pextlb $8, $0, $8 \n\t"
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"sq $8, 0(%1) \n\t"
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"add %0, %0, %2 \n\t"
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"ld $8, 0(%0) \n\t"
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"pextlb $9, $0, $9 \n\t"
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"sq $9, 16(%1) \n\t"
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"add %0, %0, %2 \n\t"
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"ld $9, 0(%0) \n\t"
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"pextlb $10, $0, $10 \n\t"
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"sq $10, 32(%1) \n\t"
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"add %0, %0, %2 \n\t"
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"ld $10, 0(%0) \n\t"
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"pextlb $8, $0, $8 \n\t"
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"sq $8, 48(%1) \n\t"
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"add %0, %0, %2 \n\t"
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"ld $8, 0(%0) \n\t"
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"pextlb $9, $0, $9 \n\t"
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"sq $9, 64(%1) \n\t"
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"add %0, %0, %2 \n\t"
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"ld $9, 0(%0) \n\t"
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"pextlb $10, $0, $10 \n\t"
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"sq $10, 80(%1) \n\t"
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"pextlb $8, $0, $8 \n\t"
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"sq $8, 96(%1) \n\t"
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"pextlb $9, $0, $9 \n\t"
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"sq $9, 112(%1) \n\t"
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".set pop \n\t"
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: "+r" (pixels) : "r" (block), "r" (line_size) : "$8", "$9", "$10", "memory" );
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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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__asm__ volatile(
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".set push \n\t"
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".set mips3 \n\t"
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"1: \n\t"
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"ldr $8, 0(%1) \n\t"
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"addiu %2, %2, -1 \n\t"
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"ldl $8, 7(%1) \n\t"
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"add %1, %1, %3 \n\t"
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"sd $8, 0(%0) \n\t"
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"add %0, %0, %3 \n\t"
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"bgtz %2, 1b \n\t"
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".set pop \n\t"
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: "+r" (block), "+r" (pixels), "+r" (h) : "r" (line_size)
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: "$8", "memory" );
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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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__asm__ volatile (
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".set push \n\t"
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".set mips3 \n\t"
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"1: \n\t"
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"ldr $8, 0(%1) \n\t"
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"add $11, %1, %3 \n\t"
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"ldl $8, 7(%1) \n\t"
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"add $10, %0, %3 \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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"ldr $12, 0($11) \n\t"
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"add %1, $11, %3 \n\t"
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"ldl $12, 7($11) \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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"ldr $13, 8($11) \n\t"
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"addiu %2, %2, -2 \n\t"
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"ldl $13, 15($11) \n\t"
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"add %0, $10, %3 \n\t"
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"pcpyld $12, $13, $12 \n\t"
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"sq $12, 0($10) \n\t"
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"bgtz %2, 1b \n\t"
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".set pop \n\t"
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: "+r" (block), "+r" (pixels), "+r" (h) : "r" (line_size)
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: "$8", "$9", "$10", "$11", "$12", "$13", "memory" );
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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 = ff_mmi_idct;
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c->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM;
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}
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}
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