mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-07 11:13:41 +02:00
121 lines
4.3 KiB
C
121 lines
4.3 KiB
C
/*
|
|
* Copyright (C) 2012 Ronald S. Bultje
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav 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.
|
|
*
|
|
* Libav 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 Libav; 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/common.h"
|
|
#include "libavutil/cpu.h"
|
|
#include "libavutil/mem.h"
|
|
#include "libavutil/x86/asm.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,
|
|
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;
|
|
|
|
if (src_y >= h) {
|
|
src_y_add = h - 1 - src_y;
|
|
src_y = h - 1;
|
|
} else if (src_y <= -block_h) {
|
|
src_y_add = 1 - block_h - src_y;
|
|
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);
|
|
assert(start_x < end_x && block_w > 0);
|
|
assert(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 mm_flags = av_get_cpu_flags();
|
|
|
|
#if ARCH_X86_32
|
|
if (bpc <= 8 && mm_flags & AV_CPU_FLAG_MMX) {
|
|
ctx->emulated_edge_mc = emulated_edge_mc_mmx;
|
|
}
|
|
if (mm_flags & AV_CPU_FLAG_3DNOW) {
|
|
ctx->prefetch = ff_prefetch_3dnow;
|
|
}
|
|
#endif /* ARCH_X86_32 */
|
|
if (mm_flags & AV_CPU_FLAG_MMXEXT) {
|
|
ctx->prefetch = ff_prefetch_mmxext;
|
|
}
|
|
if (bpc <= 8 && mm_flags & AV_CPU_FLAG_SSE) {
|
|
ctx->emulated_edge_mc = emulated_edge_mc_sse;
|
|
}
|
|
#endif /* HAVE_YASM */
|
|
}
|