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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_o, q11 | |
29 | alias n16x16_ol, q11_l | |
30 | alias n16x16_oh, q11_h | |
31 | ||
32 | alias y32x16_el, q12 | |
33 | alias y32x16_eh, q13 | |
34 | alias y32x16_ol, q14 | |
35 | alias y32x16_oh, q15 | |
36 | ||
37 | alias y16x16_e, q12 | |
38 | alias y16x16_el, q12_l | |
39 | alias y16x16_eh, q12_h | |
40 | alias y16x16_o, q13 | |
41 | alias y16x16_ol, q13_l | |
42 | alias y16x16_oh, q13_h | |
43 | ||
44 | ||
45 | alias y8x16, y16x16_e | |
46 | ||
47 | ||
48 | .macro init src | |
49 | // load s32x3x3, narrow to s16x3x3 | |
50 | vld3.i32 {q13_l, q14_l, q15_l}, [\src]! | |
51 | vld3.i32 {q13_h[0], q14_h[0], q15_h[0]}, [\src] | |
52 | ||
53 | vmovn.i32 CO_R, q13 | |
54 | vmovn.i32 CO_G, q14 | |
55 | vmovn.i32 CO_B, q15 | |
56 | ||
57 | vmov.u8 BIAS_Y, #16 | |
58 | vmov.u8 BIAS_U, #128 | |
59 | .endm | |
60 | ||
61 | ||
62 | .macro compute_y_16x1_step action, s8x16, coeff | |
63 | vmov.u8 n16x16_o, #0 | |
64 | vtrn.u8 \s8x16, n16x16_o | |
65 | ||
66 | \action y32x16_el, \s8x16\()_l, \coeff | |
67 | \action y32x16_eh, \s8x16\()_h, \coeff | |
68 | \action y32x16_ol, n16x16_ol, \coeff | |
69 | \action y32x16_oh, n16x16_oh, \coeff | |
70 | .endm | |
71 | ||
72 | /* | |
73 | * in: r8x16, g8x16, b8x16 | |
74 | * out: y8x16 | |
75 | * clobber: q11-q15, r8x16, g8x16, b8x16 | |
76 | */ | |
77 | .macro compute_y_16x1 | |
78 | compute_y_16x1_step vmull, r8x16, CO_RY | |
79 | compute_y_16x1_step vmlal, g8x16, CO_GY | |
80 | compute_y_16x1_step vmlal, b8x16, CO_BY | |
81 | ||
82 | vrshrn.i32 y16x16_el, y32x16_el, #15 | |
83 | vrshrn.i32 y16x16_eh, y32x16_eh, #15 | |
84 | vrshrn.i32 y16x16_ol, y32x16_ol, #15 | |
85 | vrshrn.i32 y16x16_oh, y32x16_oh, #15 | |
86 | ||
87 | vtrn.8 y16x16_e, y16x16_o | |
88 | vadd.u8 y8x16, y8x16, BIAS_Y | |
89 | .endm | |
90 | ||
91 | alias c32x8_l, q14 | |
92 | alias c32x8_h, q15 | |
93 | ||
94 | alias_qw c16x8, q13 | |
95 | alias_qw c8x8x2, q10 | |
96 | ||
97 | .macro compute_chroma_8x1_step action, s16x8, coeff | |
98 | \action c32x8_l, \s16x8\()_l, \coeff | |
99 | \action c32x8_h, \s16x8\()_h, \coeff | |
100 | .endm | |
101 | ||
102 | /* | |
103 | * in: r16x8, g16x8, b16x8 | |
104 | * out: c8x8 | |
105 | * clobber: q14-q15 | |
106 | */ | |
107 | .macro compute_chroma_8x1 c, C | |
108 | compute_chroma_8x1_step vmull, r16x8, CO_R\C | |
109 | compute_chroma_8x1_step vmlal, g16x8, CO_G\C | |
110 | compute_chroma_8x1_step vmlal, b16x8, CO_B\C | |
111 | ||
112 | vrshrn.i32 c16x8_l, c32x8_l, #15 | |
113 | vrshrn.i32 c16x8_h, c32x8_h, #15 | |
114 | vmovn.i16 \c\()8x8, c16x8 | |
115 | vadd.u8 \c\()8x8, \c\()8x8, BIAS_\C | |
116 | .endm | |
117 | ||
118 | ||
119 | loop_420sp rgbx, nv12, init, kernel_420_16x2, 32 |