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_l, q11 29alias n16x16_h, q12 30 31alias y16x16_l, q13 32alias y16x16_h, q14 33 34alias_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 67alias c16x8, q15 68alias_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 81