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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 |