/* * Copyright (C) 2013 Xiaolei Yu <dreifachstein@gmail.com> * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "rgb2yuv_neon_common.S" /* downsampled R16G16B16 x8 */ alias_qw r16x8, q7 alias_qw g16x8, q8 alias_qw b16x8, q9 alias n16x16_o, q11 alias n16x16_ol, q11_l alias n16x16_oh, q11_h alias y32x16_el, q12 alias y32x16_eh, q13 alias y32x16_ol, q14 alias y32x16_oh, q15 alias y16x16_e, q12 alias y16x16_el, q12_l alias y16x16_eh, q12_h alias y16x16_o, q13 alias y16x16_ol, q13_l alias y16x16_oh, q13_h alias y8x16, y16x16_e .macro init src // load s32x3x3, narrow to s16x3x3 vld3.i32 {q13_l, q14_l, q15_l}, [\src]! vld3.i32 {q13_h[0], q14_h[0], q15_h[0]}, [\src] vmovn.i32 CO_R, q13 vmovn.i32 CO_G, q14 vmovn.i32 CO_B, q15 vmov.u8 BIAS_Y, #16 vmov.u8 BIAS_U, #128 .endm .macro compute_y_16x1_step action, s8x16, coeff vmov.u8 n16x16_o, #0 vtrn.u8 \s8x16, n16x16_o \action y32x16_el, \s8x16\()_l, \coeff \action y32x16_eh, \s8x16\()_h, \coeff \action y32x16_ol, n16x16_ol, \coeff \action y32x16_oh, n16x16_oh, \coeff .endm /* * in: r8x16, g8x16, b8x16 * out: y8x16 * clobber: q11-q15, r8x16, g8x16, b8x16 */ .macro compute_y_16x1 compute_y_16x1_step vmull, r8x16, CO_RY compute_y_16x1_step vmlal, g8x16, CO_GY compute_y_16x1_step vmlal, b8x16, CO_BY vrshrn.i32 y16x16_el, y32x16_el, #15 vrshrn.i32 y16x16_eh, y32x16_eh, #15 vrshrn.i32 y16x16_ol, y32x16_ol, #15 vrshrn.i32 y16x16_oh, y32x16_oh, #15 vtrn.8 y16x16_e, y16x16_o vadd.u8 y8x16, y8x16, BIAS_Y .endm alias c32x8_l, q14 alias c32x8_h, q15 alias_qw c16x8, q13 alias_qw c8x8x2, q10 .macro compute_chroma_8x1_step action, s16x8, coeff \action c32x8_l, \s16x8\()_l, \coeff \action c32x8_h, \s16x8\()_h, \coeff .endm /* * in: r16x8, g16x8, b16x8 * out: c8x8 * clobber: q14-q15 */ .macro compute_chroma_8x1 c, C compute_chroma_8x1_step vmull, r16x8, CO_R\C compute_chroma_8x1_step vmlal, g16x8, CO_G\C compute_chroma_8x1_step vmlal, b16x8, CO_B\C vrshrn.i32 c16x8_l, c32x8_l, #15 vrshrn.i32 c16x8_h, c32x8_h, #15 vmovn.i16 \c\()8x8, c16x8 vadd.u8 \c\()8x8, \c\()8x8, BIAS_\C .endm loop_420sp rgbx, nv12, init, kernel_420_16x2, 32