diff options
Diffstat (limited to 'libavcodec/x86/huffyuvencdsp_mmx.c')
| -rw-r--r-- | libavcodec/x86/huffyuvencdsp_mmx.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/libavcodec/x86/huffyuvencdsp_mmx.c b/libavcodec/x86/huffyuvencdsp_mmx.c new file mode 100644 index 0000000000..8ffaced37d --- /dev/null +++ b/libavcodec/x86/huffyuvencdsp_mmx.c @@ -0,0 +1,113 @@ +/* + * SIMD-optimized HuffYUV encoding functions + * Copyright (c) 2000, 2001 Fabrice Bellard + * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> + * + * MMX optimization by Nick Kurshev <nickols_k@mail.ru> + * + * 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 "libavutil/attributes.h" +#include "libavutil/cpu.h" +#include "libavutil/x86/asm.h" +#include "libavutil/x86/cpu.h" +#include "libavcodec/huffyuvencdsp.h" +#include "libavcodec/mathops.h" + +#if HAVE_INLINE_ASM + +static void diff_bytes_mmx(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w) +{ + x86_reg i = 0; + + __asm__ volatile ( + "1: \n\t" + "movq (%2, %0), %%mm0 \n\t" + "movq (%1, %0), %%mm1 \n\t" + "psubb %%mm0, %%mm1 \n\t" + "movq %%mm1, (%3, %0) \n\t" + "movq 8(%2, %0), %%mm0 \n\t" + "movq 8(%1, %0), %%mm1 \n\t" + "psubb %%mm0, %%mm1 \n\t" + "movq %%mm1, 8(%3, %0) \n\t" + "add $16, %0 \n\t" + "cmp %4, %0 \n\t" + " jb 1b \n\t" + : "+r" (i) + : "r" (src1), "r" (src2), "r" (dst), "r" ((x86_reg) w - 15)); + + for (; i < w; i++) + dst[i + 0] = src1[i + 0] - src2[i + 0]; +} + +static void sub_hfyu_median_pred_mmxext(uint8_t *dst, const uint8_t *src1, + const uint8_t *src2, int w, + int *left, int *left_top) +{ + x86_reg i = 0; + uint8_t l, lt; + + __asm__ volatile ( + "movq (%1, %0), %%mm0 \n\t" // LT + "psllq $8, %%mm0 \n\t" + "1: \n\t" + "movq (%1, %0), %%mm1 \n\t" // T + "movq -1(%2, %0), %%mm2 \n\t" // L + "movq (%2, %0), %%mm3 \n\t" // X + "movq %%mm2, %%mm4 \n\t" // L + "psubb %%mm0, %%mm2 \n\t" + "paddb %%mm1, %%mm2 \n\t" // L + T - LT + "movq %%mm4, %%mm5 \n\t" // L + "pmaxub %%mm1, %%mm4 \n\t" // max(T, L) + "pminub %%mm5, %%mm1 \n\t" // min(T, L) + "pminub %%mm2, %%mm4 \n\t" + "pmaxub %%mm1, %%mm4 \n\t" + "psubb %%mm4, %%mm3 \n\t" // dst - pred + "movq %%mm3, (%3, %0) \n\t" + "add $8, %0 \n\t" + "movq -1(%1, %0), %%mm0 \n\t" // LT + "cmp %4, %0 \n\t" + " jb 1b \n\t" + : "+r" (i) + : "r" (src1), "r" (src2), "r" (dst), "r" ((x86_reg) w)); + + l = *left; + lt = *left_top; + + dst[0] = src2[0] - mid_pred(l, src1[0], (l + src1[0] - lt) & 0xFF); + + *left_top = src1[w - 1]; + *left = src2[w - 1]; +} + +#endif /* HAVE_INLINE_ASM */ + +av_cold void ff_huffyuvencdsp_init_x86(HuffYUVEncDSPContext *c) +{ +#if HAVE_INLINE_ASM + int cpu_flags = av_get_cpu_flags(); + + if (INLINE_MMX(cpu_flags)) { + c->diff_bytes = diff_bytes_mmx; + } + + if (INLINE_MMXEXT(cpu_flags)) { + c->sub_hfyu_median_pred = sub_hfyu_median_pred_mmxext; + } +#endif /* HAVE_INLINE_ASM */ +} |