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 */ 24alias_qw r16x8, q7 25alias_qw g16x8, q8 26alias_qw b16x8, q9 27 28alias n16x16_o, q11 29alias n16x16_ol, q11_l 30alias n16x16_oh, q11_h 31 32alias y32x16_el, q12 33alias y32x16_eh, q13 34alias y32x16_ol, q14 35alias y32x16_oh, q15 36 37alias y16x16_e, q12 38alias y16x16_el, q12_l 39alias y16x16_eh, q12_h 40alias y16x16_o, q13 41alias y16x16_ol, q13_l 42alias y16x16_oh, q13_h 43 44 45alias 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 91alias c32x8_l, q14 92alias c32x8_h, q15 93 94alias_qw c16x8, q13 95alias_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, 32 120