ffmpeg/libavcodec/x86/videodsp_init.c

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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 18:26:09 +01:00
* Copyright (C) 2002-2012 Michael Niedermayer
* Copyright (C) 2012 Ronald S. Bultje
*
* 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 "config.h"
#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/cpu.h"
#include "libavutil/mem.h"
#include "libavutil/x86/asm.h"
#include "libavutil/x86/cpu.h"
#include "libavcodec/videodsp.h"
#if HAVE_YASM
typedef void emu_edge_core_func(uint8_t *buf, const uint8_t *src,
x86_reg linesize, x86_reg start_y,
x86_reg end_y, x86_reg block_h,
x86_reg start_x, x86_reg end_x,
x86_reg block_w);
extern emu_edge_core_func ff_emu_edge_core_mmx;
extern emu_edge_core_func ff_emu_edge_core_sse;
static av_always_inline void emulated_edge_mc(uint8_t *buf, const uint8_t *src,
ptrdiff_t linesize_arg,
int block_w, int block_h,
int src_x, int src_y,
int w, int h,
emu_edge_core_func *core_fn)
{
int start_y, start_x, end_y, end_x, src_y_add = 0;
int linesize = linesize_arg;
if(!w || !h)
return;
if (src_y >= h) {
src -= src_y*linesize;
src_y_add = h - 1;
src_y = h - 1;
} else if (src_y <= -block_h) {
src -= src_y*linesize;
src_y_add = 1 - block_h;
src_y = 1 - block_h;
}
if (src_x >= w) {
src += w - 1 - src_x;
src_x = w - 1;
} else if (src_x <= -block_w) {
src += 1 - block_w - src_x;
src_x = 1 - block_w;
}
start_y = FFMAX(0, -src_y);
start_x = FFMAX(0, -src_x);
end_y = FFMIN(block_h, h-src_y);
end_x = FFMIN(block_w, w-src_x);
av_assert2(start_x < end_x && block_w > 0);
av_assert2(start_y < end_y && block_h > 0);
// fill in the to-be-copied part plus all above/below
src += (src_y_add + start_y) * linesize + start_x;
buf += start_x;
core_fn(buf, src, linesize, start_y, end_y,
block_h, start_x, end_x, block_w);
}
#if ARCH_X86_32
static av_noinline void emulated_edge_mc_mmx(uint8_t *buf, const uint8_t *src,
ptrdiff_t linesize,
int block_w, int block_h,
int src_x, int src_y, int w, int h)
{
emulated_edge_mc(buf, src, linesize, block_w, block_h, src_x, src_y,
w, h, &ff_emu_edge_core_mmx);
}
#endif
static av_noinline void emulated_edge_mc_sse(uint8_t *buf, const uint8_t *src,
ptrdiff_t linesize,
int block_w, int block_h,
int src_x, int src_y, int w, int h)
{
emulated_edge_mc(buf, src, linesize, block_w, block_h, src_x, src_y,
w, h, &ff_emu_edge_core_sse);
}
#endif /* HAVE_YASM */
void ff_prefetch_mmxext(uint8_t *buf, ptrdiff_t stride, int h);
void ff_prefetch_3dnow(uint8_t *buf, ptrdiff_t stride, int h);
av_cold void ff_videodsp_init_x86(VideoDSPContext *ctx, int bpc)
{
#if HAVE_YASM
int cpu_flags = av_get_cpu_flags();
#if ARCH_X86_32
if (EXTERNAL_MMX(cpu_flags) && bpc <= 8) {
ctx->emulated_edge_mc = emulated_edge_mc_mmx;
}
if (EXTERNAL_AMD3DNOW(cpu_flags)) {
ctx->prefetch = ff_prefetch_3dnow;
}
#endif /* ARCH_X86_32 */
if (EXTERNAL_MMXEXT(cpu_flags)) {
ctx->prefetch = ff_prefetch_mmxext;
}
if (EXTERNAL_SSE(cpu_flags) && bpc <= 8) {
ctx->emulated_edge_mc = emulated_edge_mc_sse;
}
#endif /* HAVE_YASM */
}