292 lines
6.8 KiB
ArmAsm
292 lines
6.8 KiB
ArmAsm
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/*
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* Copyright (C) 2013 Xiaolei Yu <dreifachstein@gmail.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/arm/asm.S"
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.macro alias name, tgt, set=1
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.if \set != 0
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\name .req \tgt
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.else
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.unreq \name
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.endif
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.endm
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.altmacro
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.macro alias_dw_all qw, dw_l, dw_h
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alias q\qw\()_l, d\dw_l
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alias q\qw\()_h, d\dw_h
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.if \qw < 15
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alias_dw_all %(\qw + 1), %(\dw_l + 2), %(\dw_h + 2)
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.endif
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.endm
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alias_dw_all 0, 0, 1
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.noaltmacro
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.macro alias_qw name, qw, set=1
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alias \name\(), \qw, \set
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alias \name\()_l, \qw\()_l, \set
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alias \name\()_h, \qw\()_h, \set
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.endm
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.macro prologue
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push {r4-r12, lr}
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vpush {q4-q7}
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.endm
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.macro epilogue
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vpop {q4-q7}
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pop {r4-r12, pc}
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.endm
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.macro load_arg reg, ix
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ldr \reg, [sp, #((10 * 4 + 4 * 16) + (\ix - 4) * 4)]
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.endm
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/* ()_to_()_neon(const uint8_t *src, uint8_t *y, uint8_t *chroma
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* int width, int height,
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* int y_stride, int c_stride, int src_stride,
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* int32_t coeff_table[9]);
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*/
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.macro alias_loop_420sp set=1
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alias src, r0, \set
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alias src0, src, \set
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alias y, r1, \set
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alias y0, y, \set
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alias chroma, r2, \set
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alias width, r3, \set
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alias header, width, \set
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alias height, r4, \set
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alias y_stride, r5, \set
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alias c_stride, r6, \set
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alias c_padding, c_stride, \set
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alias src_stride, r7, \set
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alias y0_end, r8, \set
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alias src_padding,r9, \set
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alias y_padding, r10, \set
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alias src1, r11, \set
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alias y1, r12, \set
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alias coeff_table,r12, \set
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.endm
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.macro loop_420sp s_fmt, d_fmt, init, kernel, precision
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function \s_fmt\()_to_\d_fmt\()_neon_\precision, export=1
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prologue
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alias_loop_420sp
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load_arg height, 4
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load_arg y_stride, 5
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load_arg c_stride, 6
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load_arg src_stride, 7
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load_arg coeff_table, 8
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\init coeff_table
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sub y_padding, y_stride, width
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sub c_padding, c_stride, width
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sub src_padding, src_stride, width, LSL #2
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add y0_end, y0, width
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and header, width, #15
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add y1, y0, y_stride
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add src1, src0, src_stride
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0:
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cmp header, #0
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beq 1f
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\kernel \s_fmt, \d_fmt, src0, src1, y0, y1, chroma, header
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1:
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\kernel \s_fmt, \d_fmt, src0, src1, y0, y1, chroma
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cmp y0, y0_end
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blt 1b
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2:
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add y0, y1, y_padding
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add y0_end, y1, y_stride
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add chroma, chroma, c_padding
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add src0, src1, src_padding
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add y1, y0, y_stride
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add src1, src0, src_stride
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subs height, height, #2
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bgt 0b
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epilogue
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alias_loop_420sp 0
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endfunc
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.endm
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.macro downsample
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vpaddl.u8 r16x8, r8x16
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vpaddl.u8 g16x8, g8x16
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vpaddl.u8 b16x8, b8x16
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.endm
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/* acculumate and right shift by 2 */
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.macro downsample_ars2
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vpadal.u8 r16x8, r8x16
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vpadal.u8 g16x8, g8x16
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vpadal.u8 b16x8, b8x16
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vrshr.u16 r16x8, r16x8, #2
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vrshr.u16 g16x8, g16x8, #2
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vrshr.u16 b16x8, b16x8, #2
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.endm
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.macro store_y8_16x1 dst, count
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.ifc "\count",""
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vstmia \dst!, {y8x16}
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.else
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vstmia \dst, {y8x16}
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add \dst, \dst, \count
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.endif
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.endm
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.macro store_chroma_nv12_8x1 dst, count
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.ifc "\count",""
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vst2.i8 {u8x8, v8x8}, [\dst]!
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.else
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vst2.i8 {u8x8, v8x8}, [\dst], \count
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.endif
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.endm
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.macro store_chroma_nv21_8x1 dst, count
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.ifc "\count",""
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vst2.i8 {v8x8, u8x8}, [\dst]!
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.else
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vst2.i8 {v8x8, u8x8}, [\dst], \count
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.endif
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.endm
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.macro load_8888_16x1 a, b, c, d, src, count
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.ifc "\count",""
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vld4.8 {\a\()8x16_l, \b\()8x16_l, \c\()8x16_l, \d\()8x16_l}, [\src]!
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vld4.8 {\a\()8x16_h, \b\()8x16_h, \c\()8x16_h, \d\()8x16_h}, [\src]!
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.else
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vld4.8 {\a\()8x16_l, \b\()8x16_l, \c\()8x16_l, \d\()8x16_l}, [\src]!
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vld4.8 {\a\()8x16_h, \b\()8x16_h, \c\()8x16_h, \d\()8x16_h}, [\src]
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sub \src, \src, #32
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add \src, \src, \count, LSL #2
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.endif
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.endm
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.macro load_rgbx_16x1 src, count
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load_8888_16x1 r, g, b, x, \src, \count
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.endm
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.macro load_bgrx_16x1 src, count
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load_8888_16x1 b, g, r, x, \src, \count
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.endm
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.macro alias_src_rgbx set=1
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alias_src_8888 r, g, b, x, \set
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.endm
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.macro alias_src_bgrx set=1
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alias_src_8888 b, g, r, x, \set
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.endm
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.macro alias_dst_nv12 set=1
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alias u8x8, c8x8x2_l, \set
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alias v8x8, c8x8x2_h, \set
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.endm
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.macro alias_dst_nv21 set=1
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alias v8x8, c8x8x2_l, \set
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alias u8x8, c8x8x2_h, \set
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.endm
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// common aliases
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alias CO_R d0
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CO_RY .dn d0.s16[0]
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CO_RU .dn d0.s16[1]
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CO_RV .dn d0.s16[2]
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alias CO_G d1
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CO_GY .dn d1.s16[0]
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CO_GU .dn d1.s16[1]
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CO_GV .dn d1.s16[2]
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alias CO_B d2
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CO_BY .dn d2.s16[0]
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CO_BU .dn d2.s16[1]
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CO_BV .dn d2.s16[2]
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alias BIAS_U, d3
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alias BIAS_V, BIAS_U
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alias BIAS_Y, q2
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/* q3-q6 R8G8B8X8 x16 */
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.macro alias_src_8888 a, b, c, d, set
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alias_qw \a\()8x16, q3, \set
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alias_qw \b\()8x16, q4, \set
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alias_qw \c\()8x16, q5, \set
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alias_qw \d\()8x16, q6, \set
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.endm
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.macro kernel_420_16x2 rgb_fmt, yuv_fmt, rgb0, rgb1, y0, y1, chroma, count
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alias_src_\rgb_fmt
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alias_dst_\yuv_fmt
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load_\rgb_fmt\()_16x1 \rgb0, \count
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downsample
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compute_y_16x1
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store_y8_16x1 \y0, \count
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load_\rgb_fmt\()_16x1 \rgb1, \count
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downsample_ars2
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compute_y_16x1
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store_y8_16x1 \y1, \count
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compute_chroma_8x1 u, U
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compute_chroma_8x1 v, V
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store_chroma_\yuv_fmt\()_8x1 \chroma, \count
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alias_dst_\yuv_fmt 0
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alias_src_\rgb_fmt 0
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.endm
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