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https://git.ffmpeg.org/ffmpeg.git
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77e6293735
Use "bx lr", or "pop {lr}", which do proper mode switching
between thumb and arm modes. A plain "mov pc, lr" does not switch
from thumb mode to arm mode (while in arm mode, it does switch
mode for a thumb caller).
This is normally not an issue, as CONFIG_THUMB only is enabled if
the C compiler defaults to thumb; but stick to patterns that can
do mode switching if needed, for consistency.
Signed-off-by: Martin Storsjö <martin@martin.st>
280 lines
13 KiB
ArmAsm
280 lines
13 KiB
ArmAsm
/*
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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
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vsub.u16 q14,q11 @ q14 = U * (1 << 3) - 128 * (1 << 3)
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vsub.u16 q15,q11 @ q15 = V * (1 << 3) - 128 * (1 << 3)
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vqdmulh.s16 q8, q15, d1[0] @ q8 = V * v2r
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vqdmulh.s16 q9, q14, d1[1] @ q9 = U * u2g
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vqdmulh.s16 q5, q15, d1[2] @ q5 = V * v2g
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vadd.s16 q9, q5 @ q9 = U * u2g + V * v2g
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vqdmulh.s16 q10,q14, d1[3] @ q10 = U * u2b
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.endm
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.macro compute_color dst_comp1 dst_comp2 pre
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vadd.s16 q1, q14, \pre
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vadd.s16 q2, q15, \pre
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vqrshrun.s16 \dst_comp1, q1, #1
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vqrshrun.s16 \dst_comp2, q2, #1
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.endm
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.macro compute_rgba r1 g1 b1 a1 r2 g2 b2 a2
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compute_color \r1, \r2, q8
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compute_color \g1, \g2, q9
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compute_color \b1, \b2, q10
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vmov.u8 \a1, #255
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vmov.u8 \a2, #255
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.endm
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.macro compute dst ofmt
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vshll.u8 q14, d14, #3 @ q14 = Y * (1 << 3)
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vshll.u8 q15, d15, #3 @ q15 = Y * (1 << 3)
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vsub.s16 q14, q12 @ q14 = (Y - y_offset)
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vsub.s16 q15, q12 @ q15 = (Y - y_offset)
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vqdmulh.s16 q14, q13 @ q14 = (Y - y_offset) * y_coeff
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vqdmulh.s16 q15, q13 @ q15 = (Y - y_offset) * y_coeff
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.ifc \ofmt,argb
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compute_rgba d7, d8, d9, d6, d11, d12, d13, d10
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.endif
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.ifc \ofmt,rgba
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compute_rgba d6, d7, d8, d9, d10, d11, d12, d13
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.endif
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.ifc \ofmt,abgr
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compute_rgba d9, d8, d7, d6, d13, d12, d11, d10
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.endif
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.ifc \ofmt,bgra
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compute_rgba d8, d7, d6, d9, d12, d11, d10, d13
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.endif
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vzip.8 d6, d10 @ d6 = R1R2R3R4R5R6R7R8 d10 = R9R10R11R12R13R14R15R16
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vzip.8 d7, d11 @ d7 = G1G2G3G4G5G6G7G8 d11 = G9G10G11G12G13G14G15G16
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vzip.8 d8, d12 @ d8 = B1B2B3B4B5B6B7B8 d12 = B9B10B11B12B13B14B15B16
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vzip.8 d9, d13 @ d9 = A1A2A3A4A5A6A7A8 d13 = A9A10A11A12A13A14A15A16
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vst4.8 {q3, q4}, [\dst]!
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vst4.8 {q5, q6}, [\dst]!
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.endm
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.macro process_1l_internal dst src ofmt
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vld2.8 {d14, d15}, [\src]! @ q7 = Y (interleaved)
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compute \dst, \ofmt
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.endm
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.macro process_1l ofmt
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compute_premult
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process_1l_internal r2, r4, \ofmt
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.endm
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.macro process_2l ofmt
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compute_premult
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process_1l_internal r2, r4, \ofmt
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process_1l_internal r11,r12,\ofmt
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.endm
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.macro load_args_nv12
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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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sub r3, r3, r0, lsl #2 @ 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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.endm
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.macro load_args_nv21
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load_args_nv12
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.endm
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.macro load_args_yuv420p
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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 = srcU
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ldr r8, [sp, #128] @ r8 = table
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ldr r9, [sp, #132] @ r9 = y_offset
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ldr r10,[sp, #136] @ 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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sub r3, r3, r0, lsl #2 @ r3 = linesize * 2 - width * 4 (padding)
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sub r5, r5, r0 @ r5 = linesizeY * 2 - width (paddingY)
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ldr r10,[sp, #120] @ r10 = srcV
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.endm
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.macro load_args_yuv422p
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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 = srcU
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ldr r7, [sp, #116] @ r7 = linesizeU
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ldr r12,[sp, #124] @ r12 = linesizeV
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ldr r8, [sp, #128] @ r8 = table
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ldr r9, [sp, #132] @ r9 = y_offset
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ldr r10,[sp, #136] @ 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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sub r3, r3, r0, lsl #2 @ r3 = linesize - width * 4 (padding)
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sub r5, r5, r0 @ r5 = linesizeY - width (paddingY)
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sub r7, r7, r0, lsr #1 @ r7 = linesizeU - width / 2 (paddingU)
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sub r12,r12,r0, lsr #1 @ r12 = linesizeV - width / 2 (paddingV)
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ldr r10,[sp, #120] @ r10 = srcV
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.endm
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.macro load_chroma_nv12
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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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vshll.u8 q14, d2, #3 @ q14 = U * (1 << 3)
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vshll.u8 q15, d3, #3 @ q15 = V * (1 << 3)
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.endm
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.macro load_chroma_nv21
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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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vshll.u8 q14, d3, #3 @ q14 = U * (1 << 3)
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vshll.u8 q15, d2, #3 @ q15 = V * (1 << 3)
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.endm
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.macro load_chroma_yuv420p
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pld [r10, #64*3]
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pld [r12, #64*3]
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vld1.8 d2, [r6]! @ d2: chroma red line
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vld1.8 d3, [r10]! @ d3: chroma blue line
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vshll.u8 q14, d2, #3 @ q14 = U * (1 << 3)
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vshll.u8 q15, d3, #3 @ q15 = V * (1 << 3)
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.endm
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.macro load_chroma_yuv422p
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pld [r10, #64*3]
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vld1.8 d2, [r6]! @ d2: chroma red line
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vld1.8 d3, [r10]! @ d3: chroma blue line
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vshll.u8 q14, d2, #3 @ q14 = U * (1 << 3)
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vshll.u8 q15, d3, #3 @ q15 = V * (1 << 3)
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.endm
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.macro increment_and_test_nv12
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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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.endm
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.macro increment_and_test_nv21
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increment_and_test_nv12
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.endm
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.macro increment_and_test_yuv420p
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add r11, r11, r3 @ dst2 += padding
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add r12, r12, r5 @ srcY2 += paddingY
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ldr r7, [sp, #116] @ r7 = linesizeU
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sub r7, r7, r0, lsr #1 @ r7 = linesizeU - width / 2 (paddingU)
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add r6, r6, r7 @ srcU += paddingU
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ldr r7, [sp, #124] @ r7 = linesizeV
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sub r7, r7, r0, lsr #1 @ r7 = linesizeV - width / 2 (paddingV)
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add r10, r10, r7 @ srcV += paddingV
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subs r1, r1, #2 @ height -= 2
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.endm
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.macro increment_and_test_yuv422p
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add r6, r6, r7 @ srcU += paddingU
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add r10,r10,r12 @ srcV += paddingV
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subs r1, r1, #1 @ height -= 1
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.endm
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.macro process_nv12 ofmt
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process_2l \ofmt
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.endm
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.macro process_nv21 ofmt
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process_2l \ofmt
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.endm
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.macro process_yuv420p ofmt
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process_2l \ofmt
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.endm
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.macro process_yuv422p ofmt
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process_1l \ofmt
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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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load_args_\ifmt
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vmov.u16 q11, #1024 @ q11 = 128 * (1 << 3)
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vdup.16 q12, r9 @ q12 = y_offset
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vmov d26, d0 @ q13 = y_coeff
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vmov d27, d0 @ q13 = y_coeff
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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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vmov.i8 d10, #128
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load_chroma_\ifmt
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process_\ifmt \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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increment_and_test_\ifmt
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bgt 1b
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vpop {q4-q7}
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pop {r4-r12, pc}
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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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declare_rgb_funcs yuv420p
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declare_rgb_funcs yuv422p
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