2 * Copyright (C) 2013 Xiaolei Yu <dreifachstein@gmail.com>
4 * This file is part of FFmpeg.
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.
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.
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
21 #include "rgb2yuv_neon_common.S"
23 /* downsampled R16G16B16 x8 */
29 alias n16x16_ol, q11_l
30 alias n16x16_oh, q11_h
38 alias y16x16_el, q12_l
39 alias y16x16_eh, q12_h
41 alias y16x16_ol, q13_l
42 alias y16x16_oh, q13_h
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]
62 .macro compute_y_16x1_step action, s8x16, coeff
64 vtrn.u8 \s8x16, n16x16_o
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
73 * in: r8x16, g8x16, b8x16
75 * clobber: q11-q15, r8x16, g8x16, b8x16
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
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
87 vtrn.8 y16x16_e, y16x16_o
88 vadd.u8 y8x16, y8x16, BIAS_Y
97 .macro compute_chroma_8x1_step action, s16x8, coeff
98 \action c32x8_l, \s16x8\()_l, \coeff
99 \action c32x8_h, \s16x8\()_h, \coeff
103 * in: r16x8, g16x8, b16x8
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
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
119 loop_420sp rgbx, nv12, init, kernel_420_16x2, 32