repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * Copyright (C) 2013 Xiaolei Yu <dreifachstein@gmail.com> | |
| 3 | * | |
| 4 | * This file is part of FFmpeg. | |
| 5 | * | |
| 6 | * FFmpeg is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU Lesser General Public | |
| 8 | * License as published by the Free Software Foundation; either | |
| 9 | * version 2.1 of the License, or (at your option) any later version. | |
| 10 | * | |
| 11 | * FFmpeg is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | * Lesser General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU Lesser General Public | |
| 17 | * License along with FFmpeg; if not, write to the Free Software | |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 19 | */ | |
| 20 | ||
| 21 | #include "rgb2yuv_neon_common.S" | |
| 22 | ||
| 23 | /* downsampled R16G16B16 x8 */ | |
| 24 | alias_qw r16x8, q7 | |
| 25 | alias_qw g16x8, q8 | |
| 26 | alias_qw b16x8, q9 | |
| 27 | ||
| 28 | alias n16x16_l, q11 | |
| 29 | alias n16x16_h, q12 | |
| 30 | ||
| 31 | alias y16x16_l, q13 | |
| 32 | alias y16x16_h, q14 | |
| 33 | ||
| 34 | alias_qw y8x16, q15 | |
| 35 | ||
| 36 | .macro init src | |
| 37 | vld3.i32 {q13_l, q14_l, q15_l}, [\src]! | |
| 38 | vld3.i32 {q13_h[0], q14_h[0], q15_h[0]}, [\src] | |
| 39 | vrshrn.i32 CO_R, q13, #7 | |
| 40 | vrshrn.i32 CO_G, q14, #7 | |
| 41 | vrshrn.i32 CO_B, q15, #7 | |
| 42 | ||
| 43 | vmov.u8 BIAS_Y, #16 | |
| 44 | vmov.u8 BIAS_U, #128 | |
| 45 | .endm | |
| 46 | ||
| 47 | ||
| 48 | .macro compute_y_16x1_step action, s8x16, coeff | |
| 49 | vmovl.u8 n16x16_l, \s8x16\()_l | |
| 50 | vmovl.u8 n16x16_h, \s8x16\()_h | |
| 51 | ||
| 52 | \action y16x16_l, n16x16_l, \coeff | |
| 53 | \action y16x16_h, n16x16_h, \coeff | |
| 54 | .endm | |
| 55 | ||
| 56 | .macro compute_y_16x1 | |
| 57 | compute_y_16x1_step vmul, r8x16, CO_RY | |
| 58 | compute_y_16x1_step vmla, g8x16, CO_GY | |
| 59 | compute_y_16x1_step vmla, b8x16, CO_BY | |
| 60 | ||
| 61 | vrshrn.i16 y8x16_l, y16x16_l, #8 | |
| 62 | vrshrn.i16 y8x16_h, y16x16_h, #8 | |
| 63 | ||
| 64 | vadd.u8 y8x16, y8x16, BIAS_Y | |
| 65 | .endm | |
| 66 | ||
| 67 | alias c16x8, q15 | |
| 68 | alias_qw c8x8x2, q10 | |
| 69 | ||
| 70 | ||
| 71 | .macro compute_chroma_8x1 c, C | |
| 72 | vmul c16x8, r16x8, CO_R\C | |
| 73 | vmla c16x8, g16x8, CO_G\C | |
| 74 | vmla c16x8, b16x8, CO_B\C | |
| 75 | ||
| 76 | vrshrn.i16 \c\()8x8, c16x8, #8 | |
| 77 | vadd.u8 \c\()8x8, \c\()8x8, BIAS_\C | |
| 78 | .endm | |
| 79 | ||
| 80 | loop_420sp rgbx, nv12, init, kernel_420_16x2, 16 |