mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
106 lines
3.7 KiB
106 lines
3.7 KiB
/* |
|
* 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 <stdint.h> |
|
|
|
#include "config.h" |
|
|
|
#include "libavutil/attributes.h" |
|
#include "libavutil/internal.h" |
|
#include "libavutil/cpu.h" |
|
#include "libavutil/x86/asm.h" |
|
#include "libavutil/x86/cpu.h" |
|
|
|
#include "libavcodec/blockdsp.h" |
|
|
|
#if HAVE_INLINE_ASM |
|
|
|
#define CLEAR_BLOCKS(name, n) \ |
|
static void name(int16_t *blocks) \ |
|
{ \ |
|
__asm__ volatile ( \ |
|
"pxor %%mm7, %%mm7 \n\t" \ |
|
"mov %1, %%"FF_REG_a" \n\t" \ |
|
"1: \n\t" \ |
|
"movq %%mm7, (%0, %%"FF_REG_a") \n\t" \ |
|
"movq %%mm7, 8(%0, %%"FF_REG_a") \n\t" \ |
|
"movq %%mm7, 16(%0, %%"FF_REG_a") \n\t" \ |
|
"movq %%mm7, 24(%0, %%"FF_REG_a") \n\t" \ |
|
"add $32, %%"FF_REG_a" \n\t" \ |
|
"js 1b \n\t" \ |
|
:: "r"(((uint8_t *) blocks) + 128 * n), \ |
|
"i"(-128 * n) \ |
|
: "%"FF_REG_a); \ |
|
} |
|
CLEAR_BLOCKS(clear_blocks_mmx, 6) |
|
CLEAR_BLOCKS(clear_block_mmx, 1) |
|
|
|
static void clear_block_sse(int16_t *block) |
|
{ |
|
__asm__ volatile ( |
|
"xorps %%xmm0, %%xmm0 \n" |
|
"movaps %%xmm0, (%0) \n" |
|
"movaps %%xmm0, 16(%0) \n" |
|
"movaps %%xmm0, 32(%0) \n" |
|
"movaps %%xmm0, 48(%0) \n" |
|
"movaps %%xmm0, 64(%0) \n" |
|
"movaps %%xmm0, 80(%0) \n" |
|
"movaps %%xmm0, 96(%0) \n" |
|
"movaps %%xmm0, 112(%0) \n" |
|
:: "r" (block) |
|
: "memory"); |
|
} |
|
|
|
static void clear_blocks_sse(int16_t *blocks) |
|
{ |
|
__asm__ volatile ( |
|
"xorps %%xmm0, %%xmm0 \n" |
|
"mov %1, %%"FF_REG_a" \n" |
|
"1: \n" |
|
"movaps %%xmm0, (%0, %%"FF_REG_a") \n" |
|
"movaps %%xmm0, 16(%0, %%"FF_REG_a") \n" |
|
"movaps %%xmm0, 32(%0, %%"FF_REG_a") \n" |
|
"movaps %%xmm0, 48(%0, %%"FF_REG_a") \n" |
|
"movaps %%xmm0, 64(%0, %%"FF_REG_a") \n" |
|
"movaps %%xmm0, 80(%0, %%"FF_REG_a") \n" |
|
"movaps %%xmm0, 96(%0, %%"FF_REG_a") \n" |
|
"movaps %%xmm0, 112(%0, %%"FF_REG_a") \n" |
|
"add $128, %%"FF_REG_a" \n" |
|
"js 1b \n" |
|
:: "r"(((uint8_t *) blocks) + 128 * 6), "i"(-128 * 6) |
|
: "%"FF_REG_a); |
|
} |
|
|
|
#endif /* HAVE_INLINE_ASM */ |
|
|
|
av_cold void ff_blockdsp_init_x86(BlockDSPContext *c) |
|
{ |
|
#if HAVE_INLINE_ASM |
|
int cpu_flags = av_get_cpu_flags(); |
|
|
|
if (INLINE_MMX(cpu_flags)) { |
|
c->clear_block = clear_block_mmx; |
|
c->clear_blocks = clear_blocks_mmx; |
|
} |
|
|
|
if (INLINE_SSE(cpu_flags)) { |
|
c->clear_block = clear_block_sse; |
|
c->clear_blocks = clear_blocks_sse; |
|
} |
|
#endif /* HAVE_INLINE_ASM */ |
|
}
|
|
|