| /***************************************************************************** |
| * mc.h: h264 encoder library |
| ***************************************************************************** |
| * Copyright (C) 2008 x264 Project |
| * |
| * Authors: Jason Garrett-Glaser <darkshikari@gmail.com> |
| * Loren Merritt <lorenm@u.washington.edu> |
| * |
| * This program 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. |
| * |
| * This program 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 this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA. |
| *****************************************************************************/ |
| |
| #ifndef X264_X86_UTIL_H |
| #define X264_X86_UTIL_H |
| |
| #ifdef __GNUC__ |
| #define x264_median_mv x264_median_mv_mmxext |
| static inline void x264_median_mv_mmxext( int16_t *dst, int16_t *a, int16_t *b, int16_t *c ) |
| { |
| asm( |
| "movd %1, %%mm0 \n" |
| "movd %2, %%mm1 \n" |
| "movq %%mm0, %%mm3 \n" |
| "movd %3, %%mm2 \n" |
| "pmaxsw %%mm1, %%mm0 \n" |
| "pminsw %%mm3, %%mm1 \n" |
| "pminsw %%mm2, %%mm0 \n" |
| "pmaxsw %%mm1, %%mm0 \n" |
| "movd %%mm0, %0 \n" |
| :"=m"(*(uint32_t*)dst) |
| :"m"(*(uint32_t*)a), "m"(*(uint32_t*)b), "m"(*(uint32_t*)c) |
| ); |
| } |
| #define x264_predictor_difference x264_predictor_difference_mmxext |
| static inline int x264_predictor_difference_mmxext( int16_t (*mvc)[2], intptr_t i_mvc ) |
| { |
| int sum = 0; |
| uint16_t output[4]; |
| asm( |
| "pxor %%mm4, %%mm4 \n" |
| "test $1, %1 \n" |
| "jnz 3f \n" |
| "movd -8(%2,%1,4), %%mm0 \n" |
| "movd -4(%2,%1,4), %%mm3 \n" |
| "psubw %%mm3, %%mm0 \n" |
| "jmp 2f \n" |
| "3: \n" |
| "sub $1, %1 \n" |
| "1: \n" |
| "movq -8(%2,%1,4), %%mm0 \n" |
| "psubw -4(%2,%1,4), %%mm0 \n" |
| "2: \n" |
| "sub $2, %1 \n" |
| "pxor %%mm2, %%mm2 \n" |
| "psubw %%mm0, %%mm2 \n" |
| "pmaxsw %%mm2, %%mm0 \n" |
| "paddusw %%mm0, %%mm4 \n" |
| "jg 1b \n" |
| "movq %%mm4, %0 \n" |
| :"=m"(output), "+r"(i_mvc) |
| :"r"(mvc), "m"(*(struct {int16_t x[4];} *)mvc) |
| ); |
| sum += output[0] + output[1] + output[2] + output[3]; |
| return sum; |
| } |
| #define array_non_zero_count array_non_zero_count_mmx |
| static inline int array_non_zero_count_mmx( int16_t *v ) |
| { |
| int count; |
| asm( |
| "pxor %%mm7, %%mm7 \n" |
| "movq (%1), %%mm0 \n" |
| "movq 8(%1), %%mm1 \n" |
| "packsswb 16(%1), %%mm0 \n" |
| "packsswb 24(%1), %%mm1 \n" |
| "pcmpeqb %%mm7, %%mm0 \n" |
| "pcmpeqb %%mm7, %%mm1 \n" |
| "paddb %%mm0, %%mm1 \n" |
| "psadbw %%mm7, %%mm1 \n" |
| "movd %%mm1, %0 \n" |
| :"=r"(count) |
| :"r"(v), "m"(*(struct {int16_t x[16];} *)v) |
| ); |
| return (count+0x10)&0xff; |
| } |
| #undef array_non_zero_int |
| #define array_non_zero_int array_non_zero_int_mmx |
| static ALWAYS_INLINE int array_non_zero_int_mmx( void *v, int i_count ) |
| { |
| if(i_count == 128) |
| { |
| int nonzero = 0; |
| asm( |
| "movq (%1), %%mm0 \n" |
| "por 8(%1), %%mm0 \n" |
| "por 16(%1), %%mm0 \n" |
| "por 24(%1), %%mm0 \n" |
| "por 32(%1), %%mm0 \n" |
| "por 40(%1), %%mm0 \n" |
| "por 48(%1), %%mm0 \n" |
| "por 56(%1), %%mm0 \n" |
| "por 64(%1), %%mm0 \n" |
| "por 72(%1), %%mm0 \n" |
| "por 80(%1), %%mm0 \n" |
| "por 88(%1), %%mm0 \n" |
| "por 96(%1), %%mm0 \n" |
| "por 104(%1), %%mm0 \n" |
| "por 112(%1), %%mm0 \n" |
| "por 120(%1), %%mm0 \n" |
| "packsswb %%mm0, %%mm0 \n" |
| "movd %%mm0, %0 \n" |
| :"=r"(nonzero) |
| :"r"(v), "m"(*(struct {int16_t x[64];} *)v) |
| ); |
| return !!nonzero; |
| } |
| else return array_non_zero_int_c( v, i_count ); |
| } |
| #endif |
| |
| #endif |
