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118 lines
4.1 KiB
118 lines
4.1 KiB
/* |
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* This file is part of Libav. |
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* |
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* Libav 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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* Libav 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 Libav; 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 <stdint.h> |
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#include "config.h" |
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#include "libavutil/attributes.h" |
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#include "libavutil/internal.h" |
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#include "libavutil/cpu.h" |
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#include "libavutil/x86/asm.h" |
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#include "libavutil/x86/cpu.h" |
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#include "libavcodec/blockdsp.h" |
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#include "libavcodec/version.h" |
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#if HAVE_INLINE_ASM |
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#define CLEAR_BLOCKS(name, n) \ |
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static void name(int16_t *blocks) \ |
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{ \ |
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__asm__ volatile ( \ |
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"pxor %%mm7, %%mm7 \n\t" \ |
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"mov %1, %%"FF_REG_a" \n\t" \ |
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"1: \n\t" \ |
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"movq %%mm7, (%0, %%"FF_REG_a") \n\t" \ |
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"movq %%mm7, 8(%0, %%"FF_REG_a") \n\t" \ |
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"movq %%mm7, 16(%0, %%"FF_REG_a") \n\t" \ |
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"movq %%mm7, 24(%0, %%"FF_REG_a") \n\t" \ |
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"add $32, %%"FF_REG_a" \n\t" \ |
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"js 1b \n\t" \ |
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:: "r"(((uint8_t *) blocks) + 128 * n), \ |
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"i"(-128 * n) \ |
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: "%"FF_REG_a); \ |
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} |
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CLEAR_BLOCKS(clear_blocks_mmx, 6) |
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CLEAR_BLOCKS(clear_block_mmx, 1) |
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static void clear_block_sse(int16_t *block) |
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{ |
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__asm__ volatile ( |
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"xorps %%xmm0, %%xmm0 \n" |
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"movaps %%xmm0, (%0) \n" |
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"movaps %%xmm0, 16(%0) \n" |
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"movaps %%xmm0, 32(%0) \n" |
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"movaps %%xmm0, 48(%0) \n" |
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"movaps %%xmm0, 64(%0) \n" |
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"movaps %%xmm0, 80(%0) \n" |
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"movaps %%xmm0, 96(%0) \n" |
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"movaps %%xmm0, 112(%0) \n" |
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:: "r" (block) |
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: "memory"); |
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} |
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static void clear_blocks_sse(int16_t *blocks) |
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{ |
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__asm__ volatile ( |
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"xorps %%xmm0, %%xmm0 \n" |
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"mov %1, %%"FF_REG_a" \n" |
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"1: \n" |
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"movaps %%xmm0, (%0, %%"FF_REG_a") \n" |
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"movaps %%xmm0, 16(%0, %%"FF_REG_a") \n" |
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"movaps %%xmm0, 32(%0, %%"FF_REG_a") \n" |
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"movaps %%xmm0, 48(%0, %%"FF_REG_a") \n" |
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"movaps %%xmm0, 64(%0, %%"FF_REG_a") \n" |
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"movaps %%xmm0, 80(%0, %%"FF_REG_a") \n" |
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"movaps %%xmm0, 96(%0, %%"FF_REG_a") \n" |
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"movaps %%xmm0, 112(%0, %%"FF_REG_a") \n" |
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"add $128, %%"FF_REG_a" \n" |
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"js 1b \n" |
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:: "r"(((uint8_t *) blocks) + 128 * 6), "i"(-128 * 6) |
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: "%"FF_REG_a); |
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} |
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#endif /* HAVE_INLINE_ASM */ |
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#if FF_API_XVMC |
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av_cold void ff_blockdsp_init_x86(BlockDSPContext *c, |
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AVCodecContext *avctx) |
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#else |
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av_cold void ff_blockdsp_init_x86(BlockDSPContext *c) |
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#endif /* FF_API_XVMC */ |
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{ |
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#if HAVE_INLINE_ASM |
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int cpu_flags = av_get_cpu_flags(); |
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if (INLINE_MMX(cpu_flags)) { |
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c->clear_block = clear_block_mmx; |
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c->clear_blocks = clear_blocks_mmx; |
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} |
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#if FF_API_XVMC |
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FF_DISABLE_DEPRECATION_WARNINGS |
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/* XvMCCreateBlocks() may not allocate 16-byte aligned blocks */ |
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if (CONFIG_MPEG_XVMC_DECODER && avctx->xvmc_acceleration > 1) |
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return; |
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FF_ENABLE_DEPRECATION_WARNINGS |
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#endif /* FF_API_XVMC */ |
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if (INLINE_SSE(cpu_flags)) { |
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c->clear_block = clear_block_sse; |
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c->clear_blocks = clear_blocks_sse; |
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} |
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#endif /* HAVE_INLINE_ASM */ |
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}
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