/*
* Copyright (c) 2017 Google Inc.
*
* 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"
@ All public functions in this file have the following signature:
@ typedef void (*vp9_mc_func)(uint8_t *dst, ptrdiff_t dst_stride,
@ const uint8_t *ref, ptrdiff_t ref_stride,
@ int h, int mx, int my);
function ff_vp9_copy128_neon, export=1
ldr r12, [sp]
sub r1, r1, #96
sub r3, r3, #96
1:
subs r12, r12, #1
vld1.16 {q0, q1}, [r2]!
vst1.16 {q0, q1}, [r0, :128]!
vld1.16 {q2, q3}, [r2]!
vst1.16 {q2, q3}, [r0, :128]!
vld1.16 {q8, q9}, [r2]!
vst1.16 {q8, q9}, [r0, :128]!
vld1.16 {q10, q11}, [r2], r3
vst1.16 {q10, q11}, [r0, :128], r1
bne 1b
bx lr
endfunc
function ff_vp9_avg64_16_neon, export=1
push {lr}
ldr r12, [sp, #4]
sub r1, r1, #96
sub r3, r3, #96
mov lr, r0
1:
subs r12, r12, #1
vld1.16 {q8, q9}, [r2]!
vld1.16 {q0, q1}, [r0, :128]!
vld1.16 {q10, q11}, [r2]!
vrhadd.u16 q0, q0, q8
vld1.16 {q2, q3}, [r0, :128]!
vrhadd.u16 q1, q1, q9
vld1.16 {q12, q13}, [r2]!
vrhadd.u16 q2, q2, q10
vst1.16 {q0, q1}, [lr, :128]!
vrhadd.u16 q3, q3, q11
vld1.16 {q8, q9}, [r0, :128]!
vst1.16 {q2, q3}, [lr, :128]!
vrhadd.u16 q8, q8, q12
vld1.16 {q14, q15}, [r2], r3
vrhadd.u16 q9, q9, q13
vld1.16 {q10, q11}, [r0, :128], r1
vrhadd.u16 q10, q10, q14
vst1.16 {q8, q9}, [lr, :128]!
vrhadd.u16 q11, q11, q15
vst1.16 {q10, q11}, [lr, :128], r1
bne 1b
pop {pc}
endfunc
function ff_vp9_avg32_16_neon, export=1
push {lr}
ldr r12, [sp, #4]
sub r1, r1, #32
sub r3, r3, #32
mov lr, r0
1:
subs r12, r12, #1
vld1.16 {q8, q9}, [r2]!
vld1.16 {q0, q1}, [r0, :128]!
vld1.16 {q10, q11}, [r2], r3
vrhadd.u16 q0, q0, q8
vld1.16 {q2, q3}, [r0, :128], r1
vrhadd.u16 q1, q1, q9
vrhadd.u16 q2, q2, q10
vst1.16 {q0, q1}, [lr, :128]!
vrhadd.u16 q3, q3, q11
vst1.16 {q2, q3}, [lr, :128], r1
bne 1b
pop {pc}
endfunc
function ff_vp9_avg16_16_neon, export=1
ldr r12, [sp]
1:
subs r12, r12, #1
vld1.16 {q2, q3}, [r2], r3
vld1.16 {q0, q1}, [r0, :128]
vrhadd.u16 q0, q0, q2
vrhadd.u16 q1, q1, q3
vst1.16 {q0, q1}, [r0, :128], r1
bne 1b
bx lr
endfunc
function ff_vp9_avg8_16_neon, export=1
push {lr}
ldr r12, [sp, #4]
mov lr, r0
1:
subs r12, r12, #2
vld1.16 {q2}, [r2], r3
vld1.16 {q0}, [r0, :128], r1
vld1.16 {q3}, [r2], r3
vrhadd.u16 q0, q0, q2
vld1.16 {q1}, [r0, :128], r1
vrhadd.u16 q1, q1, q3
vst1.16 {q0}, [lr, :128], r1
vst1.16 {q1}, [lr, :128], r1
bne 1b
pop {pc}
endfunc
function ff_vp9_avg4_16_neon, export=1
ldr r12, [sp]
1:
subs r12, r12, #2
vld1.16 {d2}, [r2], r3
vld1.16 {d0}, [r0, :64], r1
vld1.16 {d3}, [r2], r3
vrhadd.u16 d0, d0, d2
vld1.16 {d1}, [r0, :64]
sub r0, r0, r1
vrhadd.u16 d1, d1, d3
vst1.16 {d0}, [r0, :64], r1
vst1.16 {d1}, [r0, :64], r1
bne 1b
bx lr
endfunc
@ Helper macros for vmull/vmlal with a constant from either d0 or d1 depending on index
.macro vmull_lane dst, src, idx
.if \idx < 4
vmull.s16 \dst, \src, d0[\idx]
.else
vmull.s16 \dst, \src, d1[\idx - 4]
.endif
.endm
.macro vmlal_lane dst, src, idx
.if \idx < 4
vmlal.s16 \dst, \src, d0[\idx]
.else
vmlal.s16 \dst, \src, d1[\idx - 4]
.endif
.endm
@ Extract a vector from src1-src2 and src3-src4, andmultiply-accumulate
@ into dst1 and dst3 (or dst1-dst2 and dst3-dst4 for size >= 8)
.macro extmlal dst1, dst2, dst3, dst4, src1, src2, src3, src4, offset, size
vext.8 q14, \src1, \src2, #(2*\offset)
vext.8 q15, \src3, \src4, #(2*\offset)
vmlal_lane \dst1, d28, \offset
vmlal_lane \dst3, d30, \offset
.if \size >= 8
vmlal_lane \dst2, d29, \offset
vmlal_lane \dst4, d31, \offset
.endif
.endm
@ Instantiate a horizontal filter function for the given size.
@ This can work on 4 or 8 pixels in parallel; for larger
@ widths it will do 8 pixels at a time and loop horizontally.
@ The actual width (in bytes) is passed in r5, the height in r4 and
@ the filter coefficients in r12.
.macro do_8tap_h type, size
function \type\()_8tap_\size\()h
sub r2, r2, #6
add r6, r0, r1
add r7, r2, r3
add r1, r1, r1
add r3, r3, r3
@ Only size >= 8 loops horizontally and needs
@ reduced dst stride
.if \size >= 8
sub r1, r1, r5
.endif
@ size >= 8 loads two qwords and increments r2,
@ for size 4 it's enough with three dwords and no
@ postincrement
.if \size >= 8
sub r3, r3, r5
sub r3, r3, #16
.endif
@ Load the filter vector
vld1.16 {q0}, [r12,:128]
1:
.if \size >= 8
mov r12, r5
.endif
@ Load src
.if \size >= 8
vld1.16 {q8, q9}, [r2]!
vld1.16 {q10, q11}, [r7]!
.else
vld1.16 {d16, d17, d18}, [r2]
vld1.16 {d20, d21, d22}, [r7]
.endif
2:
vmull.s16 q1, d16, d0[0]
vmull.s16 q12, d20, d0[0]
.if \size >= 8
vmull.s16 q2, d17, d0[0]
vmull.s16 q13, d21, d0[0]
.endif
extmlal q1, q2, q12, q13, q8, q9, q10, q11, 1, \size
extmlal q1, q2, q12, q13, q8, q9, q10, q11, 2, \size
extmlal q1, q2, q12, q13, q8, q9, q10, q11, 3, \size
extmlal q1, q2, q12, q13, q8, q9, q10, q11, 4, \size
extmlal q1, q2, q12, q13, q8, q9, q10, q11, 5, \size
extmlal q1, q2, q12, q13, q8, q9, q10, q11, 6, \size
extmlal q1, q2, q12, q13, q8, q9, q10, q11, 7, \size
@ Round, shift and saturate.
@ The vqrshrun takes care of clamping negative values to zero, but
@ we manually need to do vmin with the max pixel value.
vqrshrun.s32 d2, q1, #7
vqrshrun.s32 d24, q12, #7
.if \size >= 8
vqrshrun.s32 d3, q2, #7
vqrshrun.s32 d25, q13, #7
vmin.u16 q1, q1, q3
vmin.u16 q12, q12, q3
.else
vmin.u16 d2, d2, d6
vmin.u16 d24, d24, d6
.endif
@ Average
.ifc \type,avg
.if \size >= 8
vld1.16 {q14}, [r0,:128]
vld1.16 {q15}, [r6,:128]
vrhadd.u16 q1, q1, q14
vrhadd.u16 q12, q12, q15
.else
vld1.16 {d28}, [r0,:64]
vld1.16 {d30}, [r6,:64]
vrhadd.u16 d2, d2, d28
vrhadd.u16 d24, d24, d30
.endif
.endif
@ Store and loop horizontally (for size >= 8)
.if \size >= 8
subs r12, r12, #16
vst1.16 {q1}, [r0,:128]!
vst1.16 {q12}, [r6,:128]!
beq 3f
vmov q8, q9
vmov q10, q11
vld1.16 {q9}, [r2]!
vld1.16 {q11}, [r7]!
b 2b
.else @ \size == 4
vst1.16 {d2}, [r0,:64]
vst1.16 {d24}, [r6,:64]
.endif
3:
@ Loop vertically
add r0, r0, r1
add r6, r6, r1
add r2, r2, r3
add r7, r7, r3
subs r4, r4, #2
bne 1b
pop {r4-r7}
bx lr
endfunc
.endm
.macro do_8tap_h_size size
do_8tap_h put, \size
do_8tap_h avg, \size
.endm
do_8tap_h_size 4
do_8tap_h_size 8
.macro do_8tap_h_func type, filter, offset, size, bpp
function ff_vp9_\type\()_\filter\()\size\()_h_\bpp\()_neon, export=1
push {r4-r7}
ldr r4, [sp, #16]
ldr r5, [sp, #20]
vmvn.u16 q3, #((0xffff << \bpp) & 0xffff)
movrelx r12, X(ff_vp9_subpel_filters), r6
add r12, r12, 256*\offset
add r12, r12, r5, lsl #4
mov r5, #2*\size
.if \size >= 8
b \type\()_8tap_8h
.else
b \type\()_8tap_4h
.endif
endfunc
.endm
.macro do_8tap_h_filters size, bpp
do_8tap_h_func put, regular, 1, \size, \bpp
do_8tap_h_func avg, regular, 1, \size, \bpp
do_8tap_h_func put, sharp, 2, \size, \bpp
do_8tap_h_func avg, sharp, 2, \size, \bpp
do_8tap_h_func put, smooth, 0, \size, \bpp
do_8tap_h_func avg, smooth, 0, \size, \bpp
.endm
.macro do_8tap_h_filters_bpp bpp
do_8tap_h_filters 64, \bpp
do_8tap_h_filters 32, \bpp
do_8tap_h_filters 16, \bpp
do_8tap_h_filters 8, \bpp
do_8tap_h_filters 4, \bpp
.endm
do_8tap_h_filters_bpp 10
do_8tap_h_filters_bpp 12
.ltorg
@ Vertical filters
@ Round, shift and saturate and store qreg1-4
.macro do_store4 qreg1, dreg1, qreg2, dreg2, qreg3, dreg3, qreg4, dreg4, tmp1, tmp2, tmp3, tmp4, minreg, type
vqrshrun.s32 \dreg1, \qreg1, #7
vqrshrun.s32 \dreg2, \qreg2, #7
vqrshrun.s32 \dreg3, \qreg3, #7
vqrshrun.s32 \dreg4, \qreg4, #7
.ifc \type,avg
vld1.16 {\tmp1}, [r6,:64], r1
vld1.16 {\tmp2}, [r6,:64], r1
vld1.16 {\tmp3}, [r6,:64], r1
vld1.16 {\tmp4}, [r6,:64], r1
.endif
vmin.u16 \dreg1, \dreg1, \minreg
vmin.u16 \dreg2, \dreg2, \minreg
vmin.u16 \dreg3, \dreg3, \minreg
vmin.u16 \dreg4, \dreg4, \minreg
.ifc \type,avg
vrhadd.u16 \dreg1, \dreg1, \tmp1
vrhadd.u16 \dreg2, \dreg2, \tmp2
vrhadd.u16 \dreg3, \dreg3, \tmp3
vrhadd.u16 \dreg4, \dreg4, \tmp4
.endif
vst1.16 {\dreg1}, [r0,:64], r1
vst1.16 {\dreg2}, [r0,:64], r1
vst1.16 {\dreg3}, [r0,:64], r1
vst1.16 {\dreg4}, [r0,:64], r1
.endm
@ Round, shift and saturate and store qreg1-4
@ qreg1-2 belong to one line and qreg3-4 to the second line.
@ dreg1-2 == qreg1, dreg3-4 == qreg2.
.macro do_store8 qreg1, qreg2, qreg3, qreg4, dreg1, dreg2, dreg3, dreg4, minreg, type
vqrshrun.s32 \dreg1, \qreg1, #7
vqrshrun.s32 \dreg2, \qreg2, #7
vqrshrun.s32 \dreg3, \qreg3, #7
vqrshrun.s32 \dreg4, \qreg4, #7
.ifc \type,avg
vld1.16 {\qreg3}, [r6,:128], r1
vld1.16 {\qreg4}, [r6,:128], r1
.endif
vmin.u16 \qreg1, \qreg1, \minreg
vmin.u16 \qreg2, \qreg2, \minreg
.ifc \type,avg
vrhadd.u16 \qreg1, \qreg1, \qreg3
vrhadd.u16 \qreg2, \qreg2, \qreg4
.endif
vst1.16 {\qreg1}, [r0,:128], r1
vst1.16 {\qreg2}, [r0,:128], r1
.endm
@ Evaluate the filter twice in parallel, from the inputs src1-src9 into dst1-dst2
@ (src1-src8 into dst1, src2-src9 into dst2).
.macro convolve4 dst1, dst2, src1, src2, src3, src4, src5, src6, src7, src8, src9, tmp1, tmp2
vmull.s16 \dst1, \src1, d0[0]
vmull.s16 \dst2, \src2, d0[0]
vmull.s16 \tmp1, \src2, d0[1]
vmull.s16 \tmp2, \src3, d0[1]
vmlal.s16 \dst1, \src3, d0[2]
vmlal.s16 \dst2, \src4, d0[2]
vmlal.s16 \tmp1, \src4, d0[3]
vmlal.s16 \tmp2, \src5, d0[3]
vmlal.s16 \dst1, \src5, d1[0]
vmlal.s16 \dst2, \src6, d1[0]
vmlal.s16 \tmp1, \src6, d1[1]
vmlal.s16 \tmp2, \src7, d1[1]
vmlal.s16 \dst1, \src7, d1[2]
vmlal.s16 \dst2, \src8, d1[2]
vmlal.s16 \tmp1, \src8, d1[3]
vmlal.s16 \tmp2, \src9, d1[3]
vadd.s32 \dst1, \dst1, \tmp1
vadd.s32 \dst2, \dst2, \tmp2
.endm
@ Evaluate the filter twice in parallel. This does the same as convolve4 above,
@ but with double width (two input/output registers per row).
.macro convolve8 dst1, dst2, dst3, dst4, src1, src2, src3, src4, src5, src6, src7, src8, src9, src10, src11, src12, src13, src14, src15, src16, src17, src18
vmull.s16 \dst1, \src1, d0[0]
vmull.s16 \dst2, \src2, d0[0]
vmull.s16 \dst3, \src3, d0[0]
vmull.s16 \dst4, \src4, d0[0]
vmlal.s16 \dst1, \src3, d0[1]
vmlal.s16 \dst2, \src4, d0[1]
vmlal.s16 \dst3, \src5, d0[1]
vmlal.s16 \dst4, \src6, d0[1]
vmlal.s16 \dst1, \src5, d0[2]
vmlal.s16 \dst2, \src6, d0[2]
vmlal.s16 \dst3, \src7, d0[2]
vmlal.s16 \dst4, \src8, d0[2]
vmlal.s16 \dst1, \src7, d0[3]
vmlal.s16 \dst2, \src8, d0[3]
vmlal.s16 \dst3, \src9, d0[3]
vmlal.s16 \dst4, \src10, d0[3]
vmlal.s16 \dst1, \src9, d1[0]
vmlal.s16 \dst2, \src10, d1[0]
vmlal.s16 \dst3, \src11, d1[0]
vmlal.s16 \dst4, \src12, d1[0]
vmlal.s16 \dst1, \src11, d1[1]
vmlal.s16 \dst2, \src12, d1[1]
vmlal.s16 \dst3, \src13, d1[1]
vmlal.s16 \dst4, \src14, d1[1]
vmlal.s16 \dst1, \src13, d1[2]
vmlal.s16 \dst2, \src14, d1[2]
vmlal.s16 \dst3, \src15, d1[2]
vmlal.s16 \dst4, \src16, d1[2]
vmlal.s16 \dst1, \src15, d1[3]
vmlal.s16 \dst2, \src16, d1[3]
vmlal.s16 \dst3, \src17, d1[3]
vmlal.s16 \dst4, \src18, d1[3]
.endm
@ Instantiate a vertical filter function for filtering 8 pixels at a time.
@ The height is passed in r4, the width in r5 and the filter coefficients
@ in r12.
.macro do_8tap_8v type
function \type\()_8tap_8v
sub r2, r2, r3, lsl #1
sub r2, r2, r3
vld1.16 {q0}, [r12, :128]
1:
.ifc \type,avg
mov r6, r0
.endif
mov r12, r4
vld1.16 {q5}, [r2], r3
vld1.16 {q6}, [r2], r3
vld1.16 {q7}, [r2], r3
vld1.16 {q8}, [r2], r3
vld1.16 {q9}, [r2], r3
vld1.16 {q10}, [r2], r3
vld1.16 {q11}, [r2], r3
2:
vld1.16 {q12}, [r2], r3
vld1.16 {q13}, [r2], r3
vld1.16 {q14}, [r2], r3
vld1.16 {q15}, [r2], r3
convolve8 q2, q3, q4, q5, d10, d11, d12, d13, d14, d15, d16, d17, d18, d19, d20, d21, d22, d23, d24, d25, d26, d27
do_store8 q2, q3, q4, q5, d4, d5, d6, d7, q1, \type
convolve8 q2, q3, q4, q5, d14, d15, d16, d17, d18, d19, d20, d21, d22, d23, d24, d25, d26, d27, d28, d29, d30, d31
do_store8 q2, q3, q4, q5, d4, d5, d6, d7, q1, \type
subs r12, r12, #4
beq 8f
vld1.16 {q4}, [r2], r3
vld1.16 {q5}, [r2], r3
vld1.16 {q6}, [r2], r3
vld1.16 {q7}, [r2], r3
convolve8 q2, q3, q8, q9, d18, d19, d20, d21, d22, d23, d24, d25, d26, d27, d28, d29, d30, d31, d8, d9, d10, d11
do_store8 q2, q3, q8, q9, d4, d5, d6, d7, q1, \type
convolve8 q2, q3, q8, q9, d22, d23, d24, d25, d26, d27, d28, d29, d30, d31, d8, d9, d10, d11, d12, d13, d14, d15
do_store8 q2, q3, q8, q9, d4, d5, d6, d7, q1, \type
subs r12, r12, #4
beq 8f
vld1.16 {q8}, [r2], r3
vld1.16 {q9}, [r2], r3
vld1.16 {q10}, [r2], r3
vld1.16 {q11}, [r2], r3
convolve8 q2, q3, q12, q13, d26, d27, d28, d29, d30, d31, d8, d9, d10, d11, d12, d13, d14, d15, d16, d17, d18, d19
do_store8 q2, q3, q12, q13, d4, d5, d6, d7, q1, \type
convolve8 q2, q3, q12, q13, d30, d31, d8, d9, d10, d11, d12, d13, d14, d15, d16, d17, d18, d19, d20, d21, d22, d23
do_store8 q2, q3, q12, q13, d4, d5, d6, d7, q1, \type
subs r12, r12, #4
bne 2b
8:
subs r5, r5, #8
beq 9f
@ r0 -= h * dst_stride
mls r0, r1, r4, r0
@ r2 -= h * src_stride
mls r2, r3, r4, r2
@ r2 -= 8 * src_stride
sub r2, r2, r3, lsl #3
@ r2 += 1 * src_stride
add r2, r2, r3
add r2, r2, #16
add r0, r0, #16
b 1b
9:
vpop {q4-q7}
pop {r4-r6}
bx lr
endfunc
.endm
do_8tap_8v put
do_8tap_8v avg
@ Instantiate a vertical filter function for filtering a 4 pixels wide
@ slice. This only is designed to work for 4 or 8 output lines.
.macro do_8tap_4v type
function \type\()_8tap_4v
sub r2, r2, r3, lsl #1
sub r2, r2, r3
vld1.16 {q0}, [r12, :128]
.ifc \type,avg
mov r6, r0
.endif
vld1.16 {d16}, [r2], r3
vld1.16 {d17}, [r2], r3
vld1.16 {d18}, [r2], r3
vld1.16 {d19}, [r2], r3
vld1.16 {d20}, [r2], r3
vld1.16 {d21}, [r2], r3
vld1.16 {d22}, [r2], r3
vld1.16 {d23}, [r2], r3
vld1.16 {d24}, [r2], r3
vld1.16 {d25}, [r2], r3
vld1.16 {d26}, [r2], r3
convolve4 q2, q3, d16, d17, d18, d19, d20, d21, d22, d23, d24, q14, q15
convolve4 q14, q15, d18, d19, d20, d21, d22, d23, d24, d25, d26, q8, q9
do_store4 q2, d4, q3, d6, q14, d28, q15, d30, d5, d7, d29, d31, d2, \type
subs r4, r4, #4
beq 9f
vld1.16 {d27}, [r2], r3
vld1.16 {d28}, [r2], r3
vld1.16 {d29}, [r2], r3
vld1.16 {d30}, [r2], r3
convolve4 q2, q3, d20, d21, d22, d23, d24, d25, d26, d27, d28, q8, q9
convolve4 q8, q9, d22, d23, d24, d25, d26, d27, d28, d29, d30, q10, q11
do_store4 q2, d4, q3, d6, q8, d16, q9, d18, d5, d7, d17, d19, d2, \type
9:
pop {r4-r6}
bx lr
endfunc
.endm
do_8tap_4v put
do_8tap_4v avg
.macro do_8tap_v_func type, filter, offset, size, bpp
function ff_vp9_\type\()_\filter\()\size\()_v_\bpp\()_neon, export=1
push {r4-r6}
ldr r4, [sp, #12]
ldr r5, [sp, #20]
.if \size >= 8
vpush {q4-q7}
.endif
vmvn.u16 q1, #((0xffff << \bpp) & 0xffff)
movrelx r12, X(ff_vp9_subpel_filters), r6
add r12, r12, 256*\offset
add r12, r12, r5, lsl #4
mov r5, #\size
.if \size >= 8
b \type\()_8tap_8v
.else
b \type\()_8tap_4v
.endif
endfunc
.endm
.macro do_8tap_v_filters size, bpp
do_8tap_v_func put, regular, 1, \size, \bpp
do_8tap_v_func avg, regular, 1, \size, \bpp
do_8tap_v_func put, sharp, 2, \size, \bpp
do_8tap_v_func avg, sharp, 2, \size, \bpp
do_8tap_v_func put, smooth, 0, \size, \bpp
do_8tap_v_func avg, smooth, 0, \size, \bpp
.endm
.macro do_8tap_v_filters_bpp bpp
do_8tap_v_filters 64, \bpp
do_8tap_v_filters 32, \bpp
do_8tap_v_filters 16, \bpp
do_8tap_v_filters 8, \bpp
do_8tap_v_filters 4, \bpp
.endm
do_8tap_v_filters_bpp 10
do_8tap_v_filters_bpp 12