repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | ;****************************************************************************** |
| 2 | ;* x86 optimized dithering format conversion | |
| 3 | ;* Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com> | |
| 4 | ;* | |
| 5 | ;* This file is part of FFmpeg. | |
| 6 | ;* | |
| 7 | ;* FFmpeg is free software; you can redistribute it and/or | |
| 8 | ;* modify it under the terms of the GNU Lesser General Public | |
| 9 | ;* License as published by the Free Software Foundation; either | |
| 10 | ;* version 2.1 of the License, or (at your option) any later version. | |
| 11 | ;* | |
| 12 | ;* FFmpeg is distributed in the hope that it will be useful, | |
| 13 | ;* but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | ;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 | ;* Lesser General Public License for more details. | |
| 16 | ;* | |
| 17 | ;* You should have received a copy of the GNU Lesser General Public | |
| 18 | ;* License along with FFmpeg; if not, write to the Free Software | |
| 19 | ;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 20 | ;****************************************************************************** | |
| 21 | ||
| 22 | %include "libavutil/x86/x86util.asm" | |
| 23 | ||
| 24 | SECTION_RODATA 32 | |
| 25 | ||
| 26 | ; 1.0f / (2.0f * INT32_MAX) | |
| 27 | pf_dither_scale: times 8 dd 2.32830643762e-10 | |
| 28 | ||
| 29 | pf_s16_scale: times 4 dd 32753.0 | |
| 30 | ||
| 31 | SECTION_TEXT | |
| 32 | ||
| 33 | ;------------------------------------------------------------------------------ | |
| 34 | ; void ff_quantize(int16_t *dst, float *src, float *dither, int len); | |
| 35 | ;------------------------------------------------------------------------------ | |
| 36 | ||
| 37 | INIT_XMM sse2 | |
| 38 | cglobal quantize, 4,4,3, dst, src, dither, len | |
| 39 | lea lenq, [2*lend] | |
| 40 | add dstq, lenq | |
| 41 | lea srcq, [srcq+2*lenq] | |
| 42 | lea ditherq, [ditherq+2*lenq] | |
| 43 | neg lenq | |
| 44 | mova m2, [pf_s16_scale] | |
| 45 | .loop: | |
| 46 | mulps m0, m2, [srcq+2*lenq] | |
| 47 | mulps m1, m2, [srcq+2*lenq+mmsize] | |
| 48 | addps m0, [ditherq+2*lenq] | |
| 49 | addps m1, [ditherq+2*lenq+mmsize] | |
| 50 | cvtps2dq m0, m0 | |
| 51 | cvtps2dq m1, m1 | |
| 52 | packssdw m0, m1 | |
| 53 | mova [dstq+lenq], m0 | |
| 54 | add lenq, mmsize | |
| 55 | jl .loop | |
| 56 | REP_RET | |
| 57 | ||
| 58 | ;------------------------------------------------------------------------------ | |
| 59 | ; void ff_dither_int_to_float_rectangular(float *dst, int *src, int len) | |
| 60 | ;------------------------------------------------------------------------------ | |
| 61 | ||
| 62 | %macro DITHER_INT_TO_FLOAT_RECTANGULAR 0 | |
| 63 | cglobal dither_int_to_float_rectangular, 3,3,3, dst, src, len | |
| 64 | lea lenq, [4*lend] | |
| 65 | add srcq, lenq | |
| 66 | add dstq, lenq | |
| 67 | neg lenq | |
| 68 | mova m0, [pf_dither_scale] | |
| 69 | .loop: | |
| 70 | cvtdq2ps m1, [srcq+lenq] | |
| 71 | cvtdq2ps m2, [srcq+lenq+mmsize] | |
| 72 | mulps m1, m1, m0 | |
| 73 | mulps m2, m2, m0 | |
| 74 | mova [dstq+lenq], m1 | |
| 75 | mova [dstq+lenq+mmsize], m2 | |
| 76 | add lenq, 2*mmsize | |
| 77 | jl .loop | |
| 78 | REP_RET | |
| 79 | %endmacro | |
| 80 | ||
| 81 | INIT_XMM sse2 | |
| 82 | DITHER_INT_TO_FLOAT_RECTANGULAR | |
| 83 | INIT_YMM avx | |
| 84 | DITHER_INT_TO_FLOAT_RECTANGULAR | |
| 85 | ||
| 86 | ;------------------------------------------------------------------------------ | |
| 87 | ; void ff_dither_int_to_float_triangular(float *dst, int *src0, int len) | |
| 88 | ;------------------------------------------------------------------------------ | |
| 89 | ||
| 90 | %macro DITHER_INT_TO_FLOAT_TRIANGULAR 0 | |
| 91 | cglobal dither_int_to_float_triangular, 3,4,5, dst, src0, len, src1 | |
| 92 | lea lenq, [4*lend] | |
| 93 | lea src1q, [src0q+2*lenq] | |
| 94 | add src0q, lenq | |
| 95 | add dstq, lenq | |
| 96 | neg lenq | |
| 97 | mova m0, [pf_dither_scale] | |
| 98 | .loop: | |
| 99 | cvtdq2ps m1, [src0q+lenq] | |
| 100 | cvtdq2ps m2, [src0q+lenq+mmsize] | |
| 101 | cvtdq2ps m3, [src1q+lenq] | |
| 102 | cvtdq2ps m4, [src1q+lenq+mmsize] | |
| 103 | addps m1, m1, m3 | |
| 104 | addps m2, m2, m4 | |
| 105 | mulps m1, m1, m0 | |
| 106 | mulps m2, m2, m0 | |
| 107 | mova [dstq+lenq], m1 | |
| 108 | mova [dstq+lenq+mmsize], m2 | |
| 109 | add lenq, 2*mmsize | |
| 110 | jl .loop | |
| 111 | REP_RET | |
| 112 | %endmacro | |
| 113 | ||
| 114 | INIT_XMM sse2 | |
| 115 | DITHER_INT_TO_FLOAT_TRIANGULAR | |
| 116 | INIT_YMM avx | |
| 117 | DITHER_INT_TO_FLOAT_TRIANGULAR |