diff options
Diffstat (limited to 'libavcodec/x86/audiodsp_mmx.c')
| -rw-r--r-- | libavcodec/x86/audiodsp_mmx.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/libavcodec/x86/audiodsp_mmx.c b/libavcodec/x86/audiodsp_mmx.c new file mode 100644 index 0000000000..cb550598f9 --- /dev/null +++ b/libavcodec/x86/audiodsp_mmx.c @@ -0,0 +1,58 @@ +/* + * 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/x86/asm.h" +#include "audiodsp.h" + +#if HAVE_INLINE_ASM + +void ff_vector_clipf_sse(float *dst, const float *src, + float min, float max, int len) +{ + x86_reg i = (len - 16) * 4; + __asm__ volatile ( + "movss %3, %%xmm4 \n\t" + "movss %4, %%xmm5 \n\t" + "shufps $0, %%xmm4, %%xmm4 \n\t" + "shufps $0, %%xmm5, %%xmm5 \n\t" + "1: \n\t" + "movaps (%2, %0), %%xmm0 \n\t" // 3/1 on intel + "movaps 16(%2, %0), %%xmm1 \n\t" + "movaps 32(%2, %0), %%xmm2 \n\t" + "movaps 48(%2, %0), %%xmm3 \n\t" + "maxps %%xmm4, %%xmm0 \n\t" + "maxps %%xmm4, %%xmm1 \n\t" + "maxps %%xmm4, %%xmm2 \n\t" + "maxps %%xmm4, %%xmm3 \n\t" + "minps %%xmm5, %%xmm0 \n\t" + "minps %%xmm5, %%xmm1 \n\t" + "minps %%xmm5, %%xmm2 \n\t" + "minps %%xmm5, %%xmm3 \n\t" + "movaps %%xmm0, (%1, %0) \n\t" + "movaps %%xmm1, 16(%1, %0) \n\t" + "movaps %%xmm2, 32(%1, %0) \n\t" + "movaps %%xmm3, 48(%1, %0) \n\t" + "sub $64, %0 \n\t" + "jge 1b \n\t" + : "+&r" (i) + : "r" (dst), "r" (src), "m" (min), "m" (max) + : "memory"); +} + +#endif /* HAVE_INLINE_ASM */ |