2012-12-15 20:46:02 +03:00
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/*
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x86/videodsp_init: Add back lost author attribution
Code originates from:
910b9f30 libavcodec/dsputil.c (David Conrad 2010-05-27 04:39:27 +0000 334) void ff_emulated_edge_mc(uint8_t *buf, const uint8_t *src, int linesize, int block_w, int block_h,
93a21abd libavcodec/mpegvideo.c (Michael Niedermayer 2002-07-14 18:37:35 +0000 335) int src_x, int src_y, int w, int h){
93a21abd libavcodec/mpegvideo.c (Michael Niedermayer 2002-07-14 18:37:35 +0000 336) int x, y;
93a21abd libavcodec/mpegvideo.c (Michael Niedermayer 2002-07-14 18:37:35 +0000 337) int start_y, start_x, end_y, end_x;
b5a093b3 libavcodec/mpegvideo.c (Michael Niedermayer 2002-07-25 20:22:36 +0000 338)
93a21abd libavcodec/mpegvideo.c (Michael Niedermayer 2002-07-14 18:37:35 +0000 339) if(src_y>= h){
93a21abd libavcodec/mpegvideo.c (Michael Niedermayer 2002-07-14 18:37:35 +0000 340) src+= (h-1-src_y)*linesize;
93a21abd libavcodec/mpegvideo.c (Michael Niedermayer 2002-07-14 18:37:35 +0000 341) src_y=h-1;
225f9c44 libavcodec/mpegvideo.c (Michael Niedermayer 2002-07-15 00:25:53 +0000 342) }else if(src_y<=-block_h){
225f9c44 libavcodec/mpegvideo.c (Michael Niedermayer 2002-07-15 00:25:53 +0000 343) src+= (1-block_h-src_y)*linesize;
225f9c44 libavcodec/mpegvideo.c (Michael Niedermayer 2002-07-15 00:25:53 +0000 344) src_y=1-block_h;
93a21abd libavcodec/mpegvideo.c (Michael Niedermayer 2002-07-14 18:37:35 +0000 345) }
93a21abd libavcodec/mpegvideo.c (Michael Niedermayer 2002-07-14 18:37:35 +0000 346) if(src_x>= w){
93a21abd libavcodec/mpegvideo.c (Michael Niedermayer 2002-07-14 18:37:35 +0000 347) src+= (w-1-src_x);
93a21abd libavcodec/mpegvideo.c (Michael Niedermayer 2002-07-14 18:37:35 +0000 348) src_x=w-1;
225f9c44 libavcodec/mpegvideo.c (Michael Niedermayer 2002-07-15 00:25:53 +0000 349) }else if(src_x<=-block_w){
225f9c44 libavcodec/mpegvideo.c (Michael Niedermayer 2002-07-15 00:25:53 +0000 350) src+= (1-block_w-src_x);
225f9c44 libavcodec/mpegvideo.c (Michael Niedermayer 2002-07-15 00:25:53 +0000 351) src_x=1-block_w;
93a21abd libavcodec/mpegvideo.c (Michael Niedermayer 2002-07-14 18:37:35 +0000 352) }
93a21abd libavcodec/mpegvideo.c (Michael Niedermayer 2002-07-14 18:37:35 +0000 353)
b8a78f41 libavcodec/mpegvideo.c (Michael Niedermayer 2002-11-10 11:46:59 +0000 354) start_y= FFMAX(0, -src_y);
b8a78f41 libavcodec/mpegvideo.c (Michael Niedermayer 2002-11-10 11:46:59 +0000 355) start_x= FFMAX(0, -src_x);
b8a78f41 libavcodec/mpegvideo.c (Michael Niedermayer 2002-11-10 11:46:59 +0000 356) end_y= FFMIN(block_h, h-src_y);
b8a78f41 libavcodec/mpegvideo.c (Michael Niedermayer 2002-11-10 11:46:59 +0000 357) end_x= FFMIN(block_w, w-src_x);
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-12-21 20:26:09 +03:00
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* Copyright (C) 2002-2012 Michael Niedermayer
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2012-12-15 20:46:02 +03:00
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* Copyright (C) 2012 Ronald S. Bultje
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*
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2012-12-21 20:37:52 +03:00
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* This file is part of FFmpeg.
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2012-12-15 20:46:02 +03:00
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*
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2012-12-21 20:37:52 +03:00
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* FFmpeg is free software; you can redistribute it and/or
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2012-12-15 20:46:02 +03:00
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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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2012-12-21 20:37:52 +03:00
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* FFmpeg is distributed in the hope that it will be useful,
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2012-12-15 20:46:02 +03:00
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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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2012-12-21 20:37:52 +03:00
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* License along with FFmpeg; if not, write to the Free Software
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2012-12-15 20:46:02 +03:00
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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 "config.h"
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2012-12-21 19:18:43 +03:00
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#include "libavutil/avassert.h"
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2012-12-15 20:46:02 +03:00
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#include "libavutil/common.h"
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#include "libavutil/cpu.h"
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#include "libavutil/mem.h"
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#include "libavutil/x86/asm.h"
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#include "libavcodec/videodsp.h"
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#if HAVE_YASM
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typedef void emu_edge_core_func(uint8_t *buf, const uint8_t *src,
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x86_reg linesize, x86_reg start_y,
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x86_reg end_y, x86_reg block_h,
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x86_reg start_x, x86_reg end_x,
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x86_reg block_w);
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extern emu_edge_core_func ff_emu_edge_core_mmx;
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extern emu_edge_core_func ff_emu_edge_core_sse;
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static av_always_inline void emulated_edge_mc(uint8_t *buf, const uint8_t *src,
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2012-12-21 19:18:43 +03:00
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ptrdiff_t linesize_arg,
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2012-12-15 20:46:02 +03:00
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int block_w, int block_h,
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int src_x, int src_y,
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int w, int h,
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emu_edge_core_func *core_fn)
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{
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int start_y, start_x, end_y, end_x, src_y_add = 0;
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2012-12-21 19:18:43 +03:00
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int linesize = linesize_arg;
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if(!w || !h)
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return;
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2012-12-15 20:46:02 +03:00
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if (src_y >= h) {
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src -= src_y*linesize;
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src_y_add = h - 1;
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src_y = h - 1;
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} else if (src_y <= -block_h) {
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2012-12-21 19:18:43 +03:00
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src -= src_y*linesize;
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src_y_add = 1 - block_h;
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2012-12-15 20:46:02 +03:00
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src_y = 1 - block_h;
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}
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if (src_x >= w) {
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src += w - 1 - src_x;
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src_x = w - 1;
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} else if (src_x <= -block_w) {
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src += 1 - block_w - src_x;
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src_x = 1 - block_w;
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}
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start_y = FFMAX(0, -src_y);
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start_x = FFMAX(0, -src_x);
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end_y = FFMIN(block_h, h-src_y);
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end_x = FFMIN(block_w, w-src_x);
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2012-12-21 19:18:43 +03:00
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av_assert2(start_x < end_x && block_w > 0);
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av_assert2(start_y < end_y && block_h > 0);
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// fill in the to-be-copied part plus all above/below
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src += (src_y_add + start_y) * linesize + start_x;
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buf += start_x;
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core_fn(buf, src, linesize, start_y, end_y,
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block_h, start_x, end_x, block_w);
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}
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#if ARCH_X86_32
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static av_noinline void emulated_edge_mc_mmx(uint8_t *buf, const uint8_t *src,
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ptrdiff_t linesize,
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int block_w, int block_h,
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int src_x, int src_y, int w, int h)
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{
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emulated_edge_mc(buf, src, linesize, block_w, block_h, src_x, src_y,
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w, h, &ff_emu_edge_core_mmx);
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}
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#endif
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static av_noinline void emulated_edge_mc_sse(uint8_t *buf, const uint8_t *src,
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ptrdiff_t linesize,
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int block_w, int block_h,
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int src_x, int src_y, int w, int h)
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{
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emulated_edge_mc(buf, src, linesize, block_w, block_h, src_x, src_y,
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w, h, &ff_emu_edge_core_sse);
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}
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#endif /* HAVE_YASM */
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void ff_prefetch_mmxext(uint8_t *buf, ptrdiff_t stride, int h);
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void ff_prefetch_3dnow(uint8_t *buf, ptrdiff_t stride, int h);
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void ff_videodsp_init_x86(VideoDSPContext *ctx, int bpc)
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{
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#if HAVE_YASM
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int mm_flags = av_get_cpu_flags();
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#if ARCH_X86_32
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if (bpc <= 8 && mm_flags & AV_CPU_FLAG_MMX) {
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ctx->emulated_edge_mc = emulated_edge_mc_mmx;
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}
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if (mm_flags & AV_CPU_FLAG_3DNOW) {
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ctx->prefetch = ff_prefetch_3dnow;
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}
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#endif /* ARCH_X86_32 */
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if (mm_flags & AV_CPU_FLAG_MMXEXT) {
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ctx->prefetch = ff_prefetch_mmxext;
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}
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if (bpc <= 8 && mm_flags & AV_CPU_FLAG_SSE) {
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ctx->emulated_edge_mc = emulated_edge_mc_sse;
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}
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#endif /* HAVE_YASM */
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}
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