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73 lines
2.1 KiB
73 lines
2.1 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 "config.h" |
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#include "libavutil/attributes.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/svq1enc.h" |
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#if HAVE_INLINE_ASM |
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static int ssd_int8_vs_int16_mmx(const int8_t *pix1, const int16_t *pix2, |
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int size) |
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{ |
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int sum; |
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x86_reg i = size; |
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__asm__ volatile ( |
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"pxor %%mm4, %%mm4 \n" |
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"1: \n" |
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"sub $8, %0 \n" |
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"movq (%2, %0), %%mm2 \n" |
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"movq (%3, %0, 2), %%mm0 \n" |
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"movq 8(%3, %0, 2), %%mm1 \n" |
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"punpckhbw %%mm2, %%mm3 \n" |
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"punpcklbw %%mm2, %%mm2 \n" |
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"psraw $8, %%mm3 \n" |
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"psraw $8, %%mm2 \n" |
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"psubw %%mm3, %%mm1 \n" |
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"psubw %%mm2, %%mm0 \n" |
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"pmaddwd %%mm1, %%mm1 \n" |
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"pmaddwd %%mm0, %%mm0 \n" |
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"paddd %%mm1, %%mm4 \n" |
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"paddd %%mm0, %%mm4 \n" |
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"jg 1b \n" |
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"movq %%mm4, %%mm3 \n" |
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"psrlq $32, %%mm3 \n" |
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"paddd %%mm3, %%mm4 \n" |
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"movd %%mm4, %1 \n" |
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: "+r" (i), "=r" (sum) |
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: "r" (pix1), "r" (pix2)); |
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return sum; |
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} |
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#endif /* HAVE_INLINE_ASM */ |
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av_cold void ff_svq1enc_init_x86(SVQ1EncContext *c) |
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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->ssd_int8_vs_int16 = ssd_int8_vs_int16_mmx; |
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} |
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#endif /* HAVE_INLINE_ASM */ |
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}
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