mirror of
https://github.com/FFmpeg/FFmpeg.git
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163 lines
7.4 KiB
ArmAsm
163 lines
7.4 KiB
ArmAsm
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/*
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* Copyright (c) 2015 Matthieu Bouron <matthieu.bouron stupeflix.com>
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* Copyright (c) 2015 Clément Bœsch <clement stupeflix.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 compute_premult half_u half_v
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vmov d2, \half_u @ copy left q14 to left q1
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vmov d3, \half_u @ copy left q14 to right q1
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vmov d4, \half_v @ copy left q15 to left q2
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vmov d5, \half_v @ copy left q15 to right q2
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vzip.16 d2, d3 @ U1U1U2U2U3U3U4U4
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vzip.16 d4, d5 @ V1V1V2V2V3V3V4V4
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vmull.s16 q8, d4, d1[0] @ V * v2r (left, red)
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vmull.s16 q9, d5, d1[0] @ V * v2r (right, red)
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vmull.s16 q10, d2, d1[1] @ U * u2g
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vmull.s16 q11, d3, d1[1] @ U * u2g
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vmlal.s16 q10, d4, d1[2] @ U * u2g + V * v2g (left, green)
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vmlal.s16 q11, d5, d1[2] @ U * u2g + V * v2g (right, green)
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vmull.s16 q12, d2, d1[3] @ U * u2b (left, blue)
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vmull.s16 q13, d3, d1[3] @ U * u2b (right, blue)
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.endm
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.macro compute_color dst_comp pre1 pre2
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vadd.s32 q3, q1, \pre1
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vadd.s32 q4, q2, \pre2
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vqrshrun.s32 d10, q3, #13
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vqrshrun.s32 d11, q4, #13 @ q5 = ({q3,q4} + (1<<12)) >> 13
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vqmovn.u16 \dst_comp, q5 @ saturate 16bit -> 8bit
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.endm
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.macro compute_rgba r g b a
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compute_color \r, q8, q9
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compute_color \g, q10, q11
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compute_color \b, q12, q13
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vmov.u8 \a, #255
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.endm
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.macro compute_half_line dst half_y ofmt
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vmovl.u8 q7, \half_y @ 8px of Y
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vdup.16 q5, r9
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vsub.s16 q7, q5
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vmull.s16 q1, d14, d0 @ q1 = (srcY - y_offset) * y_coeff (left)
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vmull.s16 q2, d15, d0 @ q2 = (srcY - y_offset) * y_coeff (right)
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.ifc \ofmt,argb
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compute_rgba d13, d14, d15, d12
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.endif
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.ifc \ofmt,rgba
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compute_rgba d12, d13, d14, d15
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.endif
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.ifc \ofmt,abgr
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compute_rgba d15, d14, d13, d12
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.endif
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.ifc \ofmt,bgra
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compute_rgba d14, d13, d12, d15
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.endif
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vst4.8 {q6, q7}, [\dst,:128]!
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.endm
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.macro declare_func ifmt ofmt
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function ff_\ifmt\()_to_\ofmt\()_neon, export=1
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push {r4-r12, lr}
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vpush {q4-q7}
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ldr r4, [sp, #104] @ r4 = srcY
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ldr r5, [sp, #108] @ r5 = linesizeY
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ldr r6, [sp, #112] @ r6 = srcC
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ldr r7, [sp, #116] @ r7 = linesizeC
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ldr r8, [sp, #120] @ r8 = table
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ldr r9, [sp, #124] @ r9 = y_offset
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ldr r10,[sp, #128] @ r10 = y_coeff
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vdup.16 d0, r10 @ d0 = y_coeff
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vld1.16 {d1}, [r8] @ d1 = *table
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add r11, r2, r3 @ r11 = dst + linesize (dst2)
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add r12, r4, r5 @ r12 = srcY + linesizeY (srcY2)
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lsl r3, r3, #1
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lsl r5, r5, #1
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lsl r8, r0, #2
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sub r3, r3, r8 @ r3 = linesize * 2 - width * 4 (padding)
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sub r5, r5, r0 @ r5 = linesizeY * 2 - width (paddingY)
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sub r7, r7, r0 @ r7 = linesizeC - width (paddingC)
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1:
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mov r8, r0 @ r8 = width
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2:
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pld [r6, #64*3]
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pld [r4, #64*3]
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pld [r12, #64*3]
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vld2.8 {d2, d3}, [r6]! @ q1: interleaved chroma line
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vmov.i8 d10, #128
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.ifc \ifmt,nv12
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vsubl.u8 q14, d2, d10 @ q14 = U - 128
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vsubl.u8 q15, d3, d10 @ q15 = V - 128
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.else
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vsubl.u8 q14, d3, d10 @ q14 = U - 128
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vsubl.u8 q15, d2, d10 @ q15 = V - 128
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.endif
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compute_premult d28, d30
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vld1.8 {q7}, [r4]! @ first line of luma
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vmov d28, d15 @ save right of the first line of luma for later use
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compute_half_line r2, d14, \ofmt
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vld1.8 {q7}, [r12]! @ second line of luma
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vmov d30, d15 @ save right of the second line of luma for later use
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compute_half_line r11, d14, \ofmt
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compute_premult d29, d31
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compute_half_line r2, d28, \ofmt
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compute_half_line r11, d30, \ofmt
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subs r8, r8, #16 @ width -= 16
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bgt 2b
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add r2, r2, r3 @ dst += padding
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add r4, r4, r5 @ srcY += paddingY
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add r11, r11, r3 @ dst2 += padding
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add r12, r12, r5 @ srcY2 += paddingY
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add r6, r6, r7 @ srcC += paddingC
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subs r1, r1, #2 @ height -= 2
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bgt 1b
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vpop {q4-q7}
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pop {r4-r12, lr}
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mov pc, lr
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endfunc
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.endm
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.macro declare_rgb_funcs ifmt
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declare_func \ifmt, argb
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declare_func \ifmt, rgba
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declare_func \ifmt, abgr
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declare_func \ifmt, bgra
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.endm
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declare_rgb_funcs nv12
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declare_rgb_funcs nv21
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