mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
291 lines
6.8 KiB
291 lines
6.8 KiB
/* |
|
* 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 "libavutil/arm/asm.S" |
|
|
|
.macro alias name, tgt, set=1 |
|
.if \set != 0 |
|
\name .req \tgt |
|
.else |
|
.unreq \name |
|
.endif |
|
.endm |
|
|
|
.altmacro |
|
|
|
.macro alias_dw_all qw, dw_l, dw_h |
|
alias q\qw\()_l, d\dw_l |
|
alias q\qw\()_h, d\dw_h |
|
.if \qw < 15 |
|
alias_dw_all %(\qw + 1), %(\dw_l + 2), %(\dw_h + 2) |
|
.endif |
|
.endm |
|
|
|
alias_dw_all 0, 0, 1 |
|
|
|
.noaltmacro |
|
|
|
.macro alias_qw name, qw, set=1 |
|
alias \name\(), \qw, \set |
|
alias \name\()_l, \qw\()_l, \set |
|
alias \name\()_h, \qw\()_h, \set |
|
.endm |
|
|
|
.macro prologue |
|
push {r4-r12, lr} |
|
vpush {q4-q7} |
|
.endm |
|
|
|
.macro epilogue |
|
vpop {q4-q7} |
|
pop {r4-r12, pc} |
|
.endm |
|
|
|
.macro load_arg reg, ix |
|
ldr \reg, [sp, #((10 * 4 + 4 * 16) + (\ix - 4) * 4)] |
|
.endm |
|
|
|
|
|
/* ()_to_()_neon(const uint8_t *src, uint8_t *y, uint8_t *chroma |
|
* int width, int height, |
|
* int y_stride, int c_stride, int src_stride, |
|
* int32_t coeff_table[9]); |
|
*/ |
|
.macro alias_loop_420sp set=1 |
|
alias src, r0, \set |
|
alias src0, src, \set |
|
alias y, r1, \set |
|
alias y0, y, \set |
|
alias chroma, r2, \set |
|
alias width, r3, \set |
|
alias header, width, \set |
|
|
|
alias height, r4, \set |
|
alias y_stride, r5, \set |
|
alias c_stride, r6, \set |
|
alias c_padding, c_stride, \set |
|
alias src_stride, r7, \set |
|
|
|
alias y0_end, r8, \set |
|
|
|
alias src_padding,r9, \set |
|
alias y_padding, r10, \set |
|
|
|
alias src1, r11, \set |
|
alias y1, r12, \set |
|
|
|
alias coeff_table,r12, \set |
|
.endm |
|
|
|
|
|
.macro loop_420sp s_fmt, d_fmt, init, kernel, precision |
|
|
|
function \s_fmt\()_to_\d_fmt\()_neon_\precision, export=1 |
|
prologue |
|
|
|
alias_loop_420sp |
|
|
|
load_arg height, 4 |
|
load_arg y_stride, 5 |
|
load_arg c_stride, 6 |
|
load_arg src_stride, 7 |
|
load_arg coeff_table, 8 |
|
|
|
\init coeff_table |
|
|
|
sub y_padding, y_stride, width |
|
sub c_padding, c_stride, width |
|
sub src_padding, src_stride, width, LSL #2 |
|
|
|
add y0_end, y0, width |
|
and header, width, #15 |
|
|
|
add y1, y0, y_stride |
|
add src1, src0, src_stride |
|
|
|
0: |
|
cmp header, #0 |
|
beq 1f |
|
|
|
\kernel \s_fmt, \d_fmt, src0, src1, y0, y1, chroma, header |
|
|
|
1: |
|
\kernel \s_fmt, \d_fmt, src0, src1, y0, y1, chroma |
|
|
|
cmp y0, y0_end |
|
blt 1b |
|
2: |
|
add y0, y1, y_padding |
|
add y0_end, y1, y_stride |
|
add chroma, chroma, c_padding |
|
add src0, src1, src_padding |
|
|
|
add y1, y0, y_stride |
|
add src1, src0, src_stride |
|
|
|
subs height, height, #2 |
|
|
|
bgt 0b |
|
|
|
epilogue |
|
|
|
alias_loop_420sp 0 |
|
|
|
endfunc |
|
.endm |
|
|
|
.macro downsample |
|
vpaddl.u8 r16x8, r8x16 |
|
vpaddl.u8 g16x8, g8x16 |
|
vpaddl.u8 b16x8, b8x16 |
|
.endm |
|
|
|
|
|
/* acculumate and right shift by 2 */ |
|
.macro downsample_ars2 |
|
vpadal.u8 r16x8, r8x16 |
|
vpadal.u8 g16x8, g8x16 |
|
vpadal.u8 b16x8, b8x16 |
|
|
|
vrshr.u16 r16x8, r16x8, #2 |
|
vrshr.u16 g16x8, g16x8, #2 |
|
vrshr.u16 b16x8, b16x8, #2 |
|
.endm |
|
|
|
.macro store_y8_16x1 dst, count |
|
.ifc "\count","" |
|
vstmia \dst!, {y8x16} |
|
.else |
|
vstmia \dst, {y8x16} |
|
add \dst, \dst, \count |
|
.endif |
|
.endm |
|
|
|
.macro store_chroma_nv12_8x1 dst, count |
|
.ifc "\count","" |
|
vst2.i8 {u8x8, v8x8}, [\dst]! |
|
.else |
|
vst2.i8 {u8x8, v8x8}, [\dst], \count |
|
.endif |
|
.endm |
|
|
|
.macro store_chroma_nv21_8x1 dst, count |
|
.ifc "\count","" |
|
vst2.i8 {v8x8, u8x8}, [\dst]! |
|
.else |
|
vst2.i8 {v8x8, u8x8}, [\dst], \count |
|
.endif |
|
.endm |
|
|
|
.macro load_8888_16x1 a, b, c, d, src, count |
|
.ifc "\count","" |
|
vld4.8 {\a\()8x16_l, \b\()8x16_l, \c\()8x16_l, \d\()8x16_l}, [\src]! |
|
vld4.8 {\a\()8x16_h, \b\()8x16_h, \c\()8x16_h, \d\()8x16_h}, [\src]! |
|
.else |
|
vld4.8 {\a\()8x16_l, \b\()8x16_l, \c\()8x16_l, \d\()8x16_l}, [\src]! |
|
vld4.8 {\a\()8x16_h, \b\()8x16_h, \c\()8x16_h, \d\()8x16_h}, [\src] |
|
sub \src, \src, #32 |
|
add \src, \src, \count, LSL #2 |
|
.endif |
|
.endm |
|
|
|
.macro load_rgbx_16x1 src, count |
|
load_8888_16x1 r, g, b, x, \src, \count |
|
.endm |
|
|
|
.macro load_bgrx_16x1 src, count |
|
load_8888_16x1 b, g, r, x, \src, \count |
|
.endm |
|
|
|
.macro alias_src_rgbx set=1 |
|
alias_src_8888 r, g, b, x, \set |
|
.endm |
|
|
|
.macro alias_src_bgrx set=1 |
|
alias_src_8888 b, g, r, x, \set |
|
.endm |
|
|
|
.macro alias_dst_nv12 set=1 |
|
alias u8x8, c8x8x2_l, \set |
|
alias v8x8, c8x8x2_h, \set |
|
.endm |
|
|
|
.macro alias_dst_nv21 set=1 |
|
alias v8x8, c8x8x2_l, \set |
|
alias u8x8, c8x8x2_h, \set |
|
.endm |
|
|
|
|
|
// common aliases |
|
|
|
alias CO_R d0 |
|
CO_RY .dn d0.s16[0] |
|
CO_RU .dn d0.s16[1] |
|
CO_RV .dn d0.s16[2] |
|
|
|
alias CO_G d1 |
|
CO_GY .dn d1.s16[0] |
|
CO_GU .dn d1.s16[1] |
|
CO_GV .dn d1.s16[2] |
|
|
|
alias CO_B d2 |
|
CO_BY .dn d2.s16[0] |
|
CO_BU .dn d2.s16[1] |
|
CO_BV .dn d2.s16[2] |
|
|
|
alias BIAS_U, d3 |
|
alias BIAS_V, BIAS_U |
|
|
|
alias BIAS_Y, q2 |
|
|
|
|
|
/* q3-q6 R8G8B8X8 x16 */ |
|
|
|
.macro alias_src_8888 a, b, c, d, set |
|
alias_qw \a\()8x16, q3, \set |
|
alias_qw \b\()8x16, q4, \set |
|
alias_qw \c\()8x16, q5, \set |
|
alias_qw \d\()8x16, q6, \set |
|
.endm |
|
|
|
.macro kernel_420_16x2 rgb_fmt, yuv_fmt, rgb0, rgb1, y0, y1, chroma, count |
|
alias_src_\rgb_fmt |
|
alias_dst_\yuv_fmt |
|
|
|
load_\rgb_fmt\()_16x1 \rgb0, \count |
|
|
|
downsample |
|
compute_y_16x1 |
|
store_y8_16x1 \y0, \count |
|
|
|
|
|
load_\rgb_fmt\()_16x1 \rgb1, \count |
|
downsample_ars2 |
|
compute_y_16x1 |
|
store_y8_16x1 \y1, \count |
|
|
|
compute_chroma_8x1 u, U |
|
compute_chroma_8x1 v, V |
|
|
|
store_chroma_\yuv_fmt\()_8x1 \chroma, \count |
|
|
|
alias_dst_\yuv_fmt 0 |
|
alias_src_\rgb_fmt 0 |
|
.endm
|
|
|