X-Git-Url: https://git.piment-noir.org/?p=deb_ffmpeg.git;a=blobdiff_plain;f=ffmpeg%2Flibavfilter%2Fx86%2Fvf_noise.c;fp=ffmpeg%2Flibavfilter%2Fx86%2Fvf_noise.c;h=0a86cb084b785a1aed0d4eb6e35d1b8ba88b8aa7;hp=0000000000000000000000000000000000000000;hb=f6fa7814ccfe3e76514b36cf04f5cd3cb657c8cf;hpb=2ba45a602cbfa7b771effba9b11bb4245c21bc00 diff --git a/ffmpeg/libavfilter/x86/vf_noise.c b/ffmpeg/libavfilter/x86/vf_noise.c new file mode 100644 index 0000000..0a86cb0 --- /dev/null +++ b/ffmpeg/libavfilter/x86/vf_noise.c @@ -0,0 +1,144 @@ +/* + * Copyright (c) 2002 Michael Niedermayer + * Copyright (c) 2013 Paul B Mahol + * + * This file is part of FFmpeg. + * + * FFmpeg 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. + * + * FFmpeg 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 FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "libavutil/attributes.h" +#include "libavutil/x86/cpu.h" +#include "libavutil/x86/asm.h" +#include "libavfilter/vf_noise.h" + +#if HAVE_INLINE_ASM +static void line_noise_mmx(uint8_t *dst, const uint8_t *src, + const int8_t *noise, int len, int shift) +{ + x86_reg mmx_len= len & (~7); + noise += shift; + + __asm__ volatile( + "mov %3, %%"REG_a" \n\t" + "pcmpeqb %%mm7, %%mm7 \n\t" + "psllw $15, %%mm7 \n\t" + "packsswb %%mm7, %%mm7 \n\t" + ".p2align 4 \n\t" + "1: \n\t" + "movq (%0, %%"REG_a"), %%mm0 \n\t" + "movq (%1, %%"REG_a"), %%mm1 \n\t" + "pxor %%mm7, %%mm0 \n\t" + "paddsb %%mm1, %%mm0 \n\t" + "pxor %%mm7, %%mm0 \n\t" + "movq %%mm0, (%2, %%"REG_a") \n\t" + "add $8, %%"REG_a" \n\t" + " js 1b \n\t" + :: "r" (src+mmx_len), "r" (noise+mmx_len), "r" (dst+mmx_len), "g" (-mmx_len) + : "%"REG_a + ); + if (mmx_len != len) + ff_line_noise_c(dst+mmx_len, src+mmx_len, noise+mmx_len, len-mmx_len, 0); +} + +#if HAVE_6REGS +static void line_noise_avg_mmx(uint8_t *dst, const uint8_t *src, + int len, const int8_t * const *shift) +{ + x86_reg mmx_len = len & (~7); + + __asm__ volatile( + "mov %5, %%"REG_a" \n\t" + ".p2align 4 \n\t" + "1: \n\t" + "movq (%1, %%"REG_a"), %%mm1 \n\t" + "movq (%0, %%"REG_a"), %%mm0 \n\t" + "paddb (%2, %%"REG_a"), %%mm1 \n\t" + "paddb (%3, %%"REG_a"), %%mm1 \n\t" + "movq %%mm0, %%mm2 \n\t" + "movq %%mm1, %%mm3 \n\t" + "punpcklbw %%mm0, %%mm0 \n\t" + "punpckhbw %%mm2, %%mm2 \n\t" + "punpcklbw %%mm1, %%mm1 \n\t" + "punpckhbw %%mm3, %%mm3 \n\t" + "pmulhw %%mm0, %%mm1 \n\t" + "pmulhw %%mm2, %%mm3 \n\t" + "paddw %%mm1, %%mm1 \n\t" + "paddw %%mm3, %%mm3 \n\t" + "paddw %%mm0, %%mm1 \n\t" + "paddw %%mm2, %%mm3 \n\t" + "psrlw $8, %%mm1 \n\t" + "psrlw $8, %%mm3 \n\t" + "packuswb %%mm3, %%mm1 \n\t" + "movq %%mm1, (%4, %%"REG_a") \n\t" + "add $8, %%"REG_a" \n\t" + " js 1b \n\t" + :: "r" (src+mmx_len), "r" (shift[0]+mmx_len), "r" (shift[1]+mmx_len), "r" (shift[2]+mmx_len), + "r" (dst+mmx_len), "g" (-mmx_len) + : "%"REG_a + ); + + if (mmx_len != len){ + const int8_t *shift2[3] = { shift[0]+mmx_len, shift[1]+mmx_len, shift[2]+mmx_len }; + ff_line_noise_avg_c(dst+mmx_len, src+mmx_len, len-mmx_len, shift2); + } +} +#endif /* HAVE_6REGS */ + +static void line_noise_mmxext(uint8_t *dst, const uint8_t *src, + const int8_t *noise, int len, int shift) +{ + x86_reg mmx_len = len & (~7); + noise += shift; + + __asm__ volatile( + "mov %3, %%"REG_a" \n\t" + "pcmpeqb %%mm7, %%mm7 \n\t" + "psllw $15, %%mm7 \n\t" + "packsswb %%mm7, %%mm7 \n\t" + ".p2align 4 \n\t" + "1: \n\t" + "movq (%0, %%"REG_a"), %%mm0 \n\t" + "movq (%1, %%"REG_a"), %%mm1 \n\t" + "pxor %%mm7, %%mm0 \n\t" + "paddsb %%mm1, %%mm0 \n\t" + "pxor %%mm7, %%mm0 \n\t" + "movntq %%mm0, (%2, %%"REG_a") \n\t" + "add $8, %%"REG_a" \n\t" + " js 1b \n\t" + :: "r" (src+mmx_len), "r" (noise+mmx_len), "r" (dst+mmx_len), "g" (-mmx_len) + : "%"REG_a + ); + if (mmx_len != len) + ff_line_noise_c(dst+mmx_len, src+mmx_len, noise+mmx_len, len-mmx_len, 0); +} +#endif /* HAVE_INLINE_ASM */ + +av_cold void ff_noise_init_x86(NoiseContext *n) +{ +#if HAVE_INLINE_ASM + int cpu_flags = av_get_cpu_flags(); + + if (INLINE_MMX(cpu_flags)) { + n->line_noise = line_noise_mmx; +#if HAVE_6REGS + n->line_noise_avg = line_noise_avg_mmx; +#endif + } + if (INLINE_MMXEXT(cpu_flags)) { + n->line_noise = line_noise_mmxext; + } +#endif +}