repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * SIMD-optimized IDCT-related routines | |
| 3 | * Copyright (c) 2000, 2001 Fabrice Bellard | |
| 4 | * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> | |
| 5 | * | |
| 6 | * MMX optimization by Nick Kurshev <nickols_k@mail.ru> | |
| 7 | * | |
| 8 | * This file is part of FFmpeg. | |
| 9 | * | |
| 10 | * FFmpeg is free software; you can redistribute it and/or | |
| 11 | * modify it under the terms of the GNU Lesser General Public | |
| 12 | * License as published by the Free Software Foundation; either | |
| 13 | * version 2.1 of the License, or (at your option) any later version. | |
| 14 | * | |
| 15 | * FFmpeg is distributed in the hope that it will be useful, | |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 18 | * Lesser General Public License for more details. | |
| 19 | * | |
| 20 | * You should have received a copy of the GNU Lesser General Public | |
| 21 | * License along with FFmpeg; if not, write to the Free Software | |
| 22 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 23 | */ | |
| 24 | ||
| 25 | #include "config.h" | |
| 26 | #include "libavutil/cpu.h" | |
| 27 | #include "libavutil/x86/asm.h" | |
| 28 | #include "idctdsp.h" | |
| 29 | #include "inline_asm.h" | |
| 30 | ||
| 31 | #if HAVE_INLINE_ASM | |
| 32 | ||
| 33 | void ff_put_pixels_clamped_mmx(const int16_t *block, uint8_t *pixels, | |
| 34 | int line_size) | |
| 35 | { | |
| 36 | const int16_t *p; | |
| 37 | uint8_t *pix; | |
| 38 | ||
| 39 | /* read the pixels */ | |
| 40 | p = block; | |
| 41 | pix = pixels; | |
| 42 | /* unrolled loop */ | |
| 43 | __asm__ volatile ( | |
| 44 | "movq (%3), %%mm0 \n\t" | |
| 45 | "movq 8(%3), %%mm1 \n\t" | |
| 46 | "movq 16(%3), %%mm2 \n\t" | |
| 47 | "movq 24(%3), %%mm3 \n\t" | |
| 48 | "movq 32(%3), %%mm4 \n\t" | |
| 49 | "movq 40(%3), %%mm5 \n\t" | |
| 50 | "movq 48(%3), %%mm6 \n\t" | |
| 51 | "movq 56(%3), %%mm7 \n\t" | |
| 52 | "packuswb %%mm1, %%mm0 \n\t" | |
| 53 | "packuswb %%mm3, %%mm2 \n\t" | |
| 54 | "packuswb %%mm5, %%mm4 \n\t" | |
| 55 | "packuswb %%mm7, %%mm6 \n\t" | |
| 56 | "movq %%mm0, (%0) \n\t" | |
| 57 | "movq %%mm2, (%0, %1) \n\t" | |
| 58 | "movq %%mm4, (%0, %1, 2) \n\t" | |
| 59 | "movq %%mm6, (%0, %2) \n\t" | |
| 60 | :: "r" (pix), "r" ((x86_reg) line_size), "r" ((x86_reg) line_size * 3), | |
| 61 | "r" (p) | |
| 62 | : "memory"); | |
| 63 | pix += line_size * 4; | |
| 64 | p += 32; | |
| 65 | ||
| 66 | // if here would be an exact copy of the code above | |
| 67 | // compiler would generate some very strange code | |
| 68 | // thus using "r" | |
| 69 | __asm__ volatile ( | |
| 70 | "movq (%3), %%mm0 \n\t" | |
| 71 | "movq 8(%3), %%mm1 \n\t" | |
| 72 | "movq 16(%3), %%mm2 \n\t" | |
| 73 | "movq 24(%3), %%mm3 \n\t" | |
| 74 | "movq 32(%3), %%mm4 \n\t" | |
| 75 | "movq 40(%3), %%mm5 \n\t" | |
| 76 | "movq 48(%3), %%mm6 \n\t" | |
| 77 | "movq 56(%3), %%mm7 \n\t" | |
| 78 | "packuswb %%mm1, %%mm0 \n\t" | |
| 79 | "packuswb %%mm3, %%mm2 \n\t" | |
| 80 | "packuswb %%mm5, %%mm4 \n\t" | |
| 81 | "packuswb %%mm7, %%mm6 \n\t" | |
| 82 | "movq %%mm0, (%0) \n\t" | |
| 83 | "movq %%mm2, (%0, %1) \n\t" | |
| 84 | "movq %%mm4, (%0, %1, 2) \n\t" | |
| 85 | "movq %%mm6, (%0, %2) \n\t" | |
| 86 | :: "r" (pix), "r" ((x86_reg) line_size), "r" ((x86_reg) line_size * 3), | |
| 87 | "r" (p) | |
| 88 | : "memory"); | |
| 89 | } | |
| 90 | ||
| 91 | void ff_add_pixels_clamped_mmx(const int16_t *block, uint8_t *pixels, | |
| 92 | int line_size) | |
| 93 | { | |
| 94 | const int16_t *p; | |
| 95 | uint8_t *pix; | |
| 96 | int i; | |
| 97 | ||
| 98 | /* read the pixels */ | |
| 99 | p = block; | |
| 100 | pix = pixels; | |
| 101 | MOVQ_ZERO(mm7); | |
| 102 | i = 4; | |
| 103 | do { | |
| 104 | __asm__ volatile ( | |
| 105 | "movq (%2), %%mm0 \n\t" | |
| 106 | "movq 8(%2), %%mm1 \n\t" | |
| 107 | "movq 16(%2), %%mm2 \n\t" | |
| 108 | "movq 24(%2), %%mm3 \n\t" | |
| 109 | "movq %0, %%mm4 \n\t" | |
| 110 | "movq %1, %%mm6 \n\t" | |
| 111 | "movq %%mm4, %%mm5 \n\t" | |
| 112 | "punpcklbw %%mm7, %%mm4 \n\t" | |
| 113 | "punpckhbw %%mm7, %%mm5 \n\t" | |
| 114 | "paddsw %%mm4, %%mm0 \n\t" | |
| 115 | "paddsw %%mm5, %%mm1 \n\t" | |
| 116 | "movq %%mm6, %%mm5 \n\t" | |
| 117 | "punpcklbw %%mm7, %%mm6 \n\t" | |
| 118 | "punpckhbw %%mm7, %%mm5 \n\t" | |
| 119 | "paddsw %%mm6, %%mm2 \n\t" | |
| 120 | "paddsw %%mm5, %%mm3 \n\t" | |
| 121 | "packuswb %%mm1, %%mm0 \n\t" | |
| 122 | "packuswb %%mm3, %%mm2 \n\t" | |
| 123 | "movq %%mm0, %0 \n\t" | |
| 124 | "movq %%mm2, %1 \n\t" | |
| 125 | : "+m" (*pix), "+m" (*(pix + line_size)) | |
| 126 | : "r" (p) | |
| 127 | : "memory"); | |
| 128 | pix += line_size * 2; | |
| 129 | p += 16; | |
| 130 | } while (--i); | |
| 131 | } | |
| 132 | ||
| 133 | #endif /* HAVE_INLINE_ASM */ |