| /* |
| * 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 |
