diff options
Diffstat (limited to 'libavfilter/x86/vf_eq.c')
-rw-r--r-- | libavfilter/x86/vf_eq.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/libavfilter/x86/vf_eq.c b/libavfilter/x86/vf_eq.c new file mode 100644 index 0000000..16f3995 --- /dev/null +++ b/libavfilter/x86/vf_eq.c @@ -0,0 +1,96 @@ +/* + * + * Original MPlayer filters by Richard Felker. + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 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 General Public License for more details. + * + * You should have received a copy of the GNU 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/cpu.h" +#include "libavutil/mem.h" +#include "libavutil/x86/asm.h" +#include "libavfilter/vf_eq.h" + +#if HAVE_MMX_INLINE && HAVE_6REGS +static void process_MMX(EQParameters *param, uint8_t *dst, int dst_stride, + const uint8_t *src, int src_stride, int w, int h) +{ + int i; + int pel; + int dstep = dst_stride - w; + int sstep = src_stride - w; + short brvec[4]; + short contvec[4]; + int contrast = (int) (param->contrast * 256 * 16); + int brightness = ((int) (100.0 * param->brightness + 100.0) * 511) / 200 - 128 - contrast / 32; + + brvec[0] = brvec[1] = brvec[2] = brvec[3] = brightness; + contvec[0] = contvec[1] = contvec[2] = contvec[3] = contrast; + + while (h--) { + __asm__ volatile ( + "movq (%5), %%mm3 \n\t" + "movq (%6), %%mm4 \n\t" + "pxor %%mm0, %%mm0 \n\t" + "movl %4, %%eax \n\t" + ".p2align 4 \n\t" + "1: \n\t" + "movq (%0), %%mm1 \n\t" + "movq (%0), %%mm2 \n\t" + "punpcklbw %%mm0, %%mm1\n\t" + "punpckhbw %%mm0, %%mm2\n\t" + "psllw $4, %%mm1 \n\t" + "psllw $4, %%mm2 \n\t" + "pmulhw %%mm4, %%mm1 \n\t" + "pmulhw %%mm4, %%mm2 \n\t" + "paddw %%mm3, %%mm1 \n\t" + "paddw %%mm3, %%mm2 \n\t" + "packuswb %%mm2, %%mm1 \n\t" + "add $8, %0 \n\t" + "movq %%mm1, (%1) \n\t" + "add $8, %1 \n\t" + "decl %%eax \n\t" + "jnz 1b \n\t" + : "=r" (src), "=r" (dst) + : "0" (src), "1" (dst), "r" (w>>3), "r" (brvec), "r" (contvec) + : "%eax" + ); + + for (i = w&7; i; i--) { + pel = ((*src++ * contrast) >> 12) + brightness; + if (pel & ~255) + pel = (-pel) >> 31; + *dst++ = pel; + } + + src += sstep; + dst += dstep; + } + __asm__ volatile ( "emms \n\t" ::: "memory" ); +} +#endif + +av_cold void ff_eq_init_x86(EQContext *eq) +{ +#if HAVE_MMX_INLINE && HAVE_6REGS + int cpu_flags = av_get_cpu_flags(); + + if (cpu_flags & AV_CPU_FLAG_MMX) { + eq->process = process_MMX; + } +#endif +} |