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Diffstat (limited to '')
-rw-r--r-- | third_party/dav1d/src/arm/32/filmgrain16.S | 2137 |
1 files changed, 2137 insertions, 0 deletions
diff --git a/third_party/dav1d/src/arm/32/filmgrain16.S b/third_party/dav1d/src/arm/32/filmgrain16.S new file mode 100644 index 0000000000..6c36caceae --- /dev/null +++ b/third_party/dav1d/src/arm/32/filmgrain16.S @@ -0,0 +1,2137 @@ +/* + * Copyright © 2021, VideoLAN and dav1d authors + * Copyright © 2021, Martin Storsjo + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "src/arm/asm.S" +#include "util.S" +#include "src/arm/asm-offsets.h" + +#define GRAIN_WIDTH 82 +#define GRAIN_HEIGHT 73 + +#define SUB_GRAIN_WIDTH 44 +#define SUB_GRAIN_HEIGHT 38 + +.macro increment_seed steps, shift=1 + lsr r11, r2, #3 + lsr r12, r2, #12 + lsr lr, r2, #1 + eor r11, r2, r11 // (r >> 0) ^ (r >> 3) + eor r12, r12, lr // (r >> 12) ^ (r >> 1) + eor r11, r11, r12 // (r >> 0) ^ (r >> 3) ^ (r >> 12) ^ (r >> 1) +.if \shift + lsr r2, r2, #\steps +.endif + and r11, r11, #((1 << \steps) - 1) // bit +.if \shift + orr r2, r2, r11, lsl #(16 - \steps) // *state +.else + orr r2, r2, r11, lsl #16 // *state +.endif +.endm + +.macro read_rand dest, bits, age + ubfx \dest, r2, #16 - \bits - \age, #\bits +.endm + +.macro read_shift_rand dest, bits + ubfx \dest, r2, #17 - \bits, #\bits + lsr r2, r2, #1 +.endm + +// special calling convention: +// r2 holds seed +// r3 holds dav1d_gaussian_sequence +// clobbers r11-r12 +// returns in d0-d1 +function get_gaussian_neon + push {r5-r6,lr} + increment_seed 4 + read_rand r5, 11, 3 + read_rand r6, 11, 2 + add r5, r3, r5, lsl #1 + add r6, r3, r6, lsl #1 + vld1.16 {d0[0]}, [r5] + read_rand r5, 11, 1 + vld1.16 {d0[1]}, [r6] + add r5, r3, r5, lsl #1 + read_rand r6, 11, 0 + increment_seed 4 + add r6, r3, r6, lsl #1 + vld1.16 {d0[2]}, [r5] + read_rand r5, 11, 3 + vld1.16 {d0[3]}, [r6] + add r5, r3, r5, lsl #1 + read_rand r6, 11, 2 + vld1.16 {d1[0]}, [r5] + add r6, r3, r6, lsl #1 + read_rand r5, 11, 1 + vld1.16 {d1[1]}, [r6] + read_rand r6, 11, 0 + add r5, r3, r5, lsl #1 + add r6, r3, r6, lsl #1 + vld1.16 {d1[2]}, [r5] + vld1.16 {d1[3]}, [r6] + pop {r5-r6,pc} +endfunc + +function get_grain_2_neon + push {r11,lr} + increment_seed 2 + read_rand r11, 11, 1 + read_rand r12, 11, 0 + add r11, r3, r11, lsl #1 + add r12, r3, r12, lsl #1 + vld1.16 {d0[0]}, [r11] + vld1.16 {d0[1]}, [r12] + vrshl.s16 d0, d0, d30 + pop {r11,pc} +endfunc + +.macro get_grain_2 dst + bl get_grain_2_neon +.ifnc \dst, d0 + vmov \dst, d0 +.endif +.endm + +function get_grain_4_neon + push {r11,lr} + increment_seed 4 + read_rand r11, 11, 3 + read_rand r12, 11, 2 + add r11, r3, r11, lsl #1 + add r12, r3, r12, lsl #1 + vld1.16 {d0[0]}, [r11] + read_rand r11, 11, 1 + vld1.16 {d0[1]}, [r12] + read_rand r12, 11, 0 + add r11, r3, r11, lsl #1 + add r12, r3, r12, lsl #1 + vld1.16 {d0[2]}, [r11] + vld1.16 {d0[3]}, [r12] + vrshl.s16 d0, d0, d30 + pop {r11,pc} +endfunc + +.macro get_grain_4 dst + bl get_grain_4_neon +.ifnc \dst, d0 + vmov \dst, d0 +.endif +.endm + +// r1 holds the number of entries to produce +// r6, r8 and r10 hold the previous output entries +// q0 holds the vector of produced entries +// q1 holds the input vector of sums from above +.macro output_lag n +function output_lag\n\()_neon + push {r0, lr} +.if \n == 1 + mvn lr, r5 // grain_min = ~grain_max +.else + mov r0, #1 + mov lr, #1 + sub r7, r7, #1 + sub r9, r9, #1 + lsl r0, r0, r7 + lsl lr, lr, r9 + add r7, r7, #1 + add r9, r9, #1 +.endif +1: + read_shift_rand r12, 11 + vmov.32 r11, d2[0] + lsl r12, r12, #1 + vext.8 q0, q0, q0, #2 + ldrsh r12, [r3, r12] +.if \n == 1 + mla r11, r6, r4, r11 // sum (above) + *coeff * prev output + add r6, r11, r8 // 1 << (ar_coeff_shift - 1) + add r12, r12, r10 + asr r6, r6, r7 // >> ar_coeff_shift + asr r12, r12, r9 // >> (4 - bitdepth_min_8 + grain_scale_shift) + add r6, r6, r12 + cmp r6, r5 +.elseif \n == 2 + mla r11, r8, r4, r11 // sum (above) + *coeff * prev output 1 + mla r11, r6, r10, r11 // += *coeff * prev output 2 + mov r8, r6 + add r6, r11, r0 // 1 << (ar_coeff_shift - 1) + add r12, r12, lr // 1 << (4 - bitdepth_min_8 + grain_scale_shift - 1) + asr r6, r6, r7 // >> ar_coeff_shift + asr r12, r12, r9 // >> (4 - bitdepth_min_8 + grain_scale_shift) + add r6, r6, r12 + push {lr} + cmp r6, r5 + mvn lr, r5 // grain_min = ~grain_max +.else + push {r1-r3} + sbfx r1, r4, #0, #8 + sbfx r2, r4, #8, #8 + sbfx r3, r4, #16, #8 + mla r11, r10, r1, r11 // sum (above) + *coeff * prev output 1 + mla r11, r8, r2, r11 // sum (above) + *coeff * prev output 2 + mla r11, r6, r3, r11 // += *coeff * prev output 3 + pop {r1-r3} + mov r10, r8 + mov r8, r6 + + add r6, r11, r0 // 1 << (ar_coeff_shift - 1) + add r12, r12, lr // 1 << (4 - bitdepth_min_8 + grain_scale_shift - 1) + asr r6, r6, r7 // >> ar_coeff_shift + asr r12, r12, r9 // >> (4 - bitdepth_min_8 + grain_scale_shift) + add r6, r6, r12 + push {lr} + cmp r6, r5 + mvn lr, r5 // grain_min = ~grain_max +.endif + it gt + movgt r6, r5 + cmp r6, lr + it lt + movlt r6, lr +.if \n >= 2 + pop {lr} +.endif + subs r1, r1, #1 + vext.8 q1, q1, q1, #4 + vmov.16 d1[3], r6 + bgt 1b + pop {r0, pc} +endfunc +.endm + +output_lag 1 +output_lag 2 +output_lag 3 + + +function sum_lag1_above_neon + sub r12, r0, #1*GRAIN_WIDTH*2 - 16 + vld1.16 {q10}, [r12] // load top right + + vext.8 q0, q8, q9, #14 // top left, top mid + vext.8 q1, q9, q10, #2 // top left, top mid + + vmull.s16 q2, d18, d28 + vmlal.s16 q2, d0, d27 + vmlal.s16 q2, d2, d29 + vmull.s16 q3, d19, d28 + vmlal.s16 q3, d1, d27 + vmlal.s16 q3, d3, d29 + + vmov q8, q9 + vmov q9, q10 + + bx lr +endfunc + +.macro sum_lag_n_body lag, type, uv_layout, edge, elems, uv_coeff +.ifc \lag\()_\edge, lag3_left + bl sum_lag3_left_above_neon +.else + bl sum_\lag\()_above_neon +.endif +.ifc \type, uv_420 + vpush {q6-q7} + add r12, r11, #GRAIN_WIDTH*2 + vld1.16 {q0, q1}, [r11]! + vld1.16 {q6, q7}, [r12]! + vpadd.i16 d0, d0, d1 + vpadd.i16 d1, d2, d3 + vpadd.i16 d12, d12, d13 + vpadd.i16 d13, d14, d15 + vadd.i16 q0, q0, q6 + vpop {q6-q7} + vrshr.s16 q0, q0, #2 +.endif +.ifc \type, uv_422 + vld1.16 {q0, q1}, [r11]! + vpadd.i16 d0, d0, d1 + vpadd.i16 d1, d2, d3 + vrshr.s16 q0, q0, #1 +.endif +.ifc \type, uv_444 + vld1.16 {q0}, [r11]! +.endif +.if \uv_layout +.ifnb \uv_coeff + vdup.8 d13, \uv_coeff + vmovl.s8 q6, d13 +.endif + vmlal.s16 q2, d0, d13 + vmlal.s16 q3, d1, d13 +.endif +.if \uv_layout && \elems == 8 + b sum_\lag\()_y_\edge\()_start +.elseif \uv_layout == 444 && \elems == 7 + b sum_\lag\()_y_\edge\()_start +.elseif \uv_layout == 422 && \elems == 1 + b sum_\lag\()_uv_420_\edge\()_start +.else +sum_\lag\()_\type\()_\edge\()_start: + push {r11} +.if \elems > 4 +.ifc \edge, left + increment_seed 4 + read_rand r11, 11, 3 + read_rand r12, 11, 2 + add r11, r3, r11, lsl #1 + add r12, r3, r12, lsl #1 + vld1.16 {d1[1]}, [r11] + read_rand r11, 11, 1 + vld1.16 {d1[2]}, [r12] + add r11, r3, r11, lsl #1 + vld1.16 {d1[3]}, [r11] + lsl r2, r2, #1 // shift back the state as if we'd done increment_seed with shift=0 + vrshl.s16 d1, d1, d30 + vext.8 q2, q2, q2, #12 +.ifc \lag, lag3 + vmov.s16 r10, d1[1] +.endif +.ifnc \lag, lag1 + vmov.s16 r8, d1[2] +.endif + vmov.s16 r6, d1[3] + + vmov q1, q2 + mov r1, #1 + bl output_\lag\()_neon +.else + increment_seed 4, shift=0 + vmov q1, q2 + mov r1, #4 + bl output_\lag\()_neon +.endif + + increment_seed 4, shift=0 + vmov q1, q3 +.ifc \edge, right + mov r1, #3 + bl output_\lag\()_neon + read_shift_rand r12, 11 + add r12, r3, r12, lsl #1 + vld1.16 {d2[0]}, [r12] + vrshl.s16 d2, d2, d30 + vext.8 q0, q0, q1, #2 +.else + mov r1, #4 + bl output_\lag\()_neon +.endif +.else + // elems == 1 + increment_seed 4, shift=0 + vmov q1, q2 + mov r1, #1 + bl output_\lag\()_neon + lsr r2, r2, #3 + + read_rand r11, 11, 2 + read_rand r12, 11, 1 + add r11, r3, r11, lsl #1 + add r12, r3, r12, lsl #1 + vld1.16 {d2[0]}, [r11] + read_rand r11, 11, 0 + vld1.16 {d2[1]}, [r12] + add r11, r3, r11, lsl #1 + vld1.16 {d2[2]}, [r11] + vrshl.s16 d2, d2, d30 + vext.8 q0, q0, q1, #14 +.endif + vst1.16 {q0}, [r0]! + pop {r11} + pop {r1, pc} +.endif +.endm + +.macro sum_lag1_func type, uv_layout, edge, elems=8 +function sum_\type\()_lag1_\edge\()_neon + push {r1, lr} +.ifc \edge, left + sub r12, r0, #1*GRAIN_WIDTH*2 + vld1.8 {q9}, [r12] // load the previous block right above +.endif + sum_lag_n_body lag1, \type, \uv_layout, \edge, \elems +endfunc +.endm + +sum_lag1_func y, 0, left +sum_lag1_func y, 0, mid +sum_lag1_func y, 0, right, 7 +sum_lag1_func uv_444, 444, left +sum_lag1_func uv_444, 444, mid +sum_lag1_func uv_444, 444, right, 7 +sum_lag1_func uv_422, 422, left +sum_lag1_func uv_422, 422, mid +sum_lag1_func uv_422, 422, right, 1 +sum_lag1_func uv_420, 420, left +sum_lag1_func uv_420, 420, mid +sum_lag1_func uv_420, 420, right, 1 + + +function sum_lag2_above_neon + push {lr} + sub r12, r0, #2*GRAIN_WIDTH*2 - 16 + sub lr, r0, #1*GRAIN_WIDTH*2 - 16 + vld1.16 {q10}, [r12] // load top right + vld1.16 {q13}, [lr] + + vdup.8 d10, d28[0] + vext.8 q0, q8, q9, #12 // top left, top mid + vdup.8 d12, d28[1] + vext.8 q1, q8, q9, #14 + vdup.8 d14, d28[3] + vext.8 q4, q9, q10, #2 // top mid, top right + vmovl.s8 q5, d10 + vmovl.s8 q6, d12 + vmovl.s8 q7, d14 + + vmull.s16 q2, d0, d10 + vmlal.s16 q2, d2, d12 + vmlal.s16 q2, d8, d14 + vmull.s16 q3, d1, d10 + vmlal.s16 q3, d3, d12 + vmlal.s16 q3, d9, d14 + + vdup.8 d10, d28[4] + vext.8 q0, q9, q10, #4 // top mid, top right + vdup.8 d12, d28[5] + vext.8 q1, q11, q12, #12 // top left, top mid + vdup.8 d14, d28[6] + vext.8 q4, q11, q12, #14 + vmovl.s8 q5, d10 + vmovl.s8 q6, d12 + vmovl.s8 q7, d14 + + vmlal.s16 q2, d0, d10 + vmlal.s16 q2, d2, d12 + vmlal.s16 q2, d8, d14 + vmlal.s16 q3, d1, d10 + vmlal.s16 q3, d3, d12 + vmlal.s16 q3, d9, d14 + + vdup.8 d10, d29[0] + vext.8 q0, q12, q13, #2 // top mid, top right + vdup.8 d12, d29[1] + vext.8 q1, q12, q13, #4 + + vdup.8 d14, d28[2] + vdup.8 d8, d28[7] + + vmovl.s8 q5, d10 + vmovl.s8 q6, d12 + vmovl.s8 q7, d14 + vmovl.s8 q4, d8 + + vmlal.s16 q2, d0, d10 + vmlal.s16 q2, d2, d12 + vmlal.s16 q2, d18, d14 + vmlal.s16 q2, d24, d8 + vmlal.s16 q3, d1, d10 + vmlal.s16 q3, d3, d12 + vmlal.s16 q3, d19, d14 + vmlal.s16 q3, d25, d8 + + vmov q8, q9 + vmov q9, q10 + + vmov q11, q12 + vmov q12, q13 + + pop {pc} +endfunc + +.macro sum_lag2_func type, uv_layout, edge, elems=8 +function sum_\type\()_lag2_\edge\()_neon + push {r1, lr} +.ifc \edge, left + sub r12, r0, #2*GRAIN_WIDTH*2 + sub lr, r0, #1*GRAIN_WIDTH*2 + vld1.16 {q9}, [r12] // load the previous block right above + vld1.16 {q12}, [lr] +.endif + sum_lag_n_body lag2, \type, \uv_layout, \edge, \elems, uv_coeff=d29[4] +endfunc +.endm + +sum_lag2_func y, 0, left +sum_lag2_func y, 0, mid +sum_lag2_func y, 0, right, 7 +sum_lag2_func uv_444, 444, left +sum_lag2_func uv_444, 444, mid +sum_lag2_func uv_444, 444, right, 7 +sum_lag2_func uv_422, 422, left +sum_lag2_func uv_422, 422, mid +sum_lag2_func uv_422, 422, right, 1 +sum_lag2_func uv_420, 420, left +sum_lag2_func uv_420, 420, mid +sum_lag2_func uv_420, 420, right, 1 + + +function sum_lag3_left_above_neon + // A separate codepath for the left edge, to avoid reading outside + // of the edge of the buffer. + sub r12, r0, #3*GRAIN_WIDTH*2 + vld1.8 {q11, q12}, [r12] + vext.8 q12, q11, q12, #10 + vext.8 q11, q11, q11, #10 + b sum_lag3_above_start +endfunc + +function sum_lag3_above_neon + movw r12, #(3*GRAIN_WIDTH + 3)*2 + sub r12, r0, r12 + vld1.8 {q11, q12}, [r12] + +sum_lag3_above_start: + vdup.8 d12, d26[0] + vext.8 q1, q11, q12, #2 + vdup.8 d14, d26[1] + vext.8 q4, q11, q12, #4 + vdup.8 d16, d26[2] + vext.8 q5, q11, q12, #6 + vdup.8 d18, d26[3] + vmovl.s8 q6, d12 + vmovl.s8 q7, d14 + vmovl.s8 q8, d16 + vmovl.s8 q9, d18 + + movw r12, #(2*GRAIN_WIDTH + 3)*2 + sub r12, r0, r12 + + vmull.s16 q2, d22, d12 + vmlal.s16 q2, d2, d14 + vmlal.s16 q2, d8, d16 + vmlal.s16 q2, d10, d18 + vmull.s16 q3, d23, d12 + vmlal.s16 q3, d3, d14 + vmlal.s16 q3, d9, d16 + vmlal.s16 q3, d11, d18 + + vdup.8 d12, d26[4] + vext.8 q0, q11, q12, #8 + vdup.8 d14, d26[5] + vext.8 q1, q11, q12, #10 + vdup.8 d16, d26[6] + vext.8 q4, q11, q12, #12 + vld1.8 {q11, q12}, [r12] + vdup.8 d18, d26[7] + vmovl.s8 q6, d12 + vmovl.s8 q7, d14 + vmovl.s8 q8, d16 + vmovl.s8 q9, d18 + + vmlal.s16 q2, d0, d12 + vmlal.s16 q2, d2, d14 + vmlal.s16 q2, d8, d16 + vmlal.s16 q2, d22, d18 + vmlal.s16 q3, d1, d12 + vmlal.s16 q3, d3, d14 + vmlal.s16 q3, d9, d16 + vmlal.s16 q3, d23, d18 + + vdup.8 d12, d27[0] + vext.8 q0, q11, q12, #2 + vdup.8 d14, d27[1] + vext.8 q1, q11, q12, #4 + vdup.8 d16, d27[2] + vext.8 q4, q11, q12, #6 + vdup.8 d18, d27[3] + vext.8 q5, q11, q12, #8 + vmovl.s8 q6, d12 + vmovl.s8 q7, d14 + vmovl.s8 q8, d16 + vmovl.s8 q9, d18 + + sub r12, r0, #(1*GRAIN_WIDTH + 3)*2 + + vmlal.s16 q2, d0, d12 + vmlal.s16 q2, d2, d14 + vmlal.s16 q2, d8, d16 + vmlal.s16 q2, d10, d18 + vmlal.s16 q3, d1, d12 + vmlal.s16 q3, d3, d14 + vmlal.s16 q3, d9, d16 + vmlal.s16 q3, d11, d18 + + vdup.8 d12, d27[4] + vext.8 q0, q11, q12, #10 + vdup.8 d14, d27[5] + vext.8 q1, q11, q12, #12 + vld1.8 {q11, q12}, [r12] + vdup.8 d16, d27[6] + vdup.8 d18, d27[7] + vmovl.s8 q6, d12 + vmovl.s8 q7, d14 + vext.8 q5, q11, q12, #2 + vmovl.s8 q8, d16 + vmovl.s8 q9, d18 + + vmlal.s16 q2, d0, d12 + vmlal.s16 q2, d2, d14 + vmlal.s16 q2, d22, d16 + vmlal.s16 q2, d10, d18 + vmlal.s16 q3, d1, d12 + vmlal.s16 q3, d3, d14 + vmlal.s16 q3, d23, d16 + vmlal.s16 q3, d11, d18 + + vdup.8 d12, d28[0] + vext.8 q0, q11, q12, #4 + vdup.8 d14, d28[1] + vext.8 q1, q11, q12, #6 + vdup.8 d16, d28[2] + vext.8 q4, q11, q12, #8 + vdup.8 d18, d28[3] + vext.8 q5, q11, q12, #10 + vmovl.s8 q6, d12 + vmovl.s8 q7, d14 + vmovl.s8 q8, d16 + vmovl.s8 q9, d18 + + vmlal.s16 q2, d0, d12 + vmlal.s16 q2, d2, d14 + vmlal.s16 q2, d8, d16 + vmlal.s16 q2, d10, d18 + vmlal.s16 q3, d1, d12 + vmlal.s16 q3, d3, d14 + vmlal.s16 q3, d9, d16 + vmlal.s16 q3, d11, d18 + + vdup.8 d12, d28[4] + vext.8 q0, q11, q12, #12 + vmovl.s8 q6, d12 + + vmlal.s16 q2, d0, d12 + vmlal.s16 q3, d1, d12 + + bx lr +endfunc + +.macro sum_lag3_func type, uv_layout, edge, elems=8 +function sum_\type\()_lag3_\edge\()_neon + push {r1, lr} + sum_lag_n_body lag3, \type, \uv_layout, \edge, \elems, uv_coeff=d29[0] +endfunc +.endm + +sum_lag3_func y, 0, left +sum_lag3_func y, 0, mid +sum_lag3_func y, 0, right, 7 +sum_lag3_func uv_444, 444, left +sum_lag3_func uv_444, 444, mid +sum_lag3_func uv_444, 444, right, 7 +sum_lag3_func uv_422, 422, left +sum_lag3_func uv_422, 422, mid +sum_lag3_func uv_422, 422, right, 1 +sum_lag3_func uv_420, 420, left +sum_lag3_func uv_420, 420, mid +sum_lag3_func uv_420, 420, right, 1 + +function generate_grain_rows_neon + push {r10-r11,lr} +1: + mov r10, #80 +2: + bl get_gaussian_neon + vrshl.s16 q0, q0, q15 + subs r10, r10, #8 + vst1.16 {q0}, [r0]! + bgt 2b + get_grain_2 d0 + subs r1, r1, #1 + vst1.32 {d0[0]}, [r0]! + bgt 1b + pop {r10-r11,pc} +endfunc + +function generate_grain_rows_44_neon + push {r10-r11,lr} +1: + mov r10, #40 +2: + bl get_gaussian_neon + vrshl.s16 q0, q0, q15 + subs r10, r10, #8 + vst1.16 {q0}, [r0]! + bgt 2b + get_grain_4 d0 + subs r1, r1, #1 + vst1.16 {d0}, [r0] + add r0, r0, #GRAIN_WIDTH*2-80 + bgt 1b + pop {r10-r11,pc} +endfunc + +function gen_grain_uv_444_lag0_neon + vld1.16 {q3}, [r11]! +gen_grain_uv_lag0_8_start: + push {r11,lr} + bl get_gaussian_neon + vrshl.s16 q0, q0, q15 +gen_grain_uv_lag0_8_add: + vand q3, q3, q1 + vmull.s16 q2, d6, d22 + vmull.s16 q3, d7, d22 + vrshl.s32 q2, q2, q12 + vrshl.s32 q3, q3, q12 + vqmovn.s32 d4, q2 + vqmovn.s32 d5, q3 + vqadd.s16 q2, q2, q0 + vmin.s16 q2, q2, q9 + vmax.s16 q2, q2, q10 + vst1.16 {q2}, [r0]! + pop {r11,pc} +endfunc + +function gen_grain_uv_420_lag0_8_neon + add r12, r11, #GRAIN_WIDTH*2 + vld1.16 {q2,q3}, [r11]! + vld1.16 {q4,q5}, [r12] + vpadd.i16 d4, d4, d5 + vpadd.i16 d5, d6, d7 + vpadd.i16 d8, d8, d9 + vpadd.i16 d9, d10, d11 + vadd.i16 q2, q2, q4 + vrshr.s16 q3, q2, #2 + b gen_grain_uv_lag0_8_start +endfunc + +function gen_grain_uv_422_lag0_8_neon + vld1.16 {q2,q3}, [r11]! + vpadd.i16 d4, d4, d5 + vpadd.i16 d5, d6, d7 + vrshr.s16 q3, q2, #1 + b gen_grain_uv_lag0_8_start +endfunc + +function gen_grain_uv_420_lag0_4_neon + add r12, r11, #GRAIN_WIDTH*2 + vld1.16 {q2}, [r11] + vld1.16 {q0}, [r12] + add r11, r11, #32 + vpadd.i16 d4, d4, d5 + vpadd.i16 d0, d0, d1 + vadd.i16 d4, d4, d0 + vrshr.s16 d6, d4, #2 + push {r11,lr} + get_grain_4 d0 + b gen_grain_uv_lag0_8_add +endfunc + +function gen_grain_uv_422_lag0_4_neon + vld1.16 {q2}, [r11] + add r11, r11, #32 + vpadd.i16 d4, d4, d5 + vrshr.s16 d6, d4, #1 + push {r11,lr} + get_grain_4 d0 + b gen_grain_uv_lag0_8_add +endfunc + +.macro gen_grain_82 type +function generate_grain_\type\()_16bpc_neon, export=1 + push {r4-r11,lr} + +.ifc \type, uv_444 + ldr r4, [sp, #36] + mov r12, r3 + mov lr, #28 + add r11, r1, #3*GRAIN_WIDTH*2 + mov r1, r2 + mul r12, r12, lr + clz lr, r4 +.else + clz lr, r2 +.endif + movrel r3, X(gaussian_sequence) + sub lr, lr, #24 // -bitdepth_min_8 + ldr r2, [r1, #FGD_SEED] + ldr r9, [r1, #FGD_GRAIN_SCALE_SHIFT] +.ifc \type, y + add r4, r1, #FGD_AR_COEFFS_Y +.else + add r4, r1, #FGD_AR_COEFFS_UV +.endif + add r9, r9, lr // grain_scale_shift - bitdepth_min_8 + adr r5, L(gen_grain_\type\()_tbl) + ldr r6, [r1, #FGD_AR_COEFF_LAG] + add r9, r9, #4 + ldr r6, [r5, r6, lsl #2] + vdup.16 q15, r9 // 4 - bitdepth_min_8 + data->grain_scale_shift + add r5, r5, r6 + vneg.s16 q15, q15 + +.ifc \type, uv_444 + push {lr} + cmp r12, #0 + movw r10, #0x49d8 + movw lr, #0xb524 + // Intentionally using a separate register instead of moveq with an + // immediate constant, to avoid armv8 deprecated it instruction forms. + it eq + moveq r10, lr + add r4, r4, r12 // Add offset to ar_coeffs_uv[1] + eor r2, r2, r10 + pop {lr} +.endif + + ldr r7, [r1, #FGD_AR_COEFF_SHIFT] + neg lr, lr // bitdepth_min_8 + mov r8, #1 + mov r10, #1 + lsl r8, r8, r7 // 1 << ar_coeff_shift + lsl r10, r10, r9 // 1 << (4 + data->grain_scale_shift) + lsr r8, r8, #1 // 1 << (ar_coeff_shift - 1) + lsr r10, r10, #1 // 1 << (4 + data->grain_scale_shift - 1) + + bx r5 + + .align 2 +L(gen_grain_\type\()_tbl): + .word L(generate_grain_\type\()_lag0) - L(gen_grain_\type\()_tbl) + CONFIG_THUMB + .word L(generate_grain_\type\()_lag1) - L(gen_grain_\type\()_tbl) + CONFIG_THUMB + .word L(generate_grain_\type\()_lag2) - L(gen_grain_\type\()_tbl) + CONFIG_THUMB + .word L(generate_grain_\type\()_lag3) - L(gen_grain_\type\()_tbl) + CONFIG_THUMB + +L(generate_grain_\type\()_lag0): +.ifc \type, y + mov r1, #GRAIN_HEIGHT + bl generate_grain_rows_neon +.else + mov r5, #128 + lsl r5, r5, lr // 128 << bitdepth_min_8 + sub r5, r5, #1 // (128 << bitdepth_min_8) - 1 + mvn r6, r5 // grain_min = ~grain_max + + mov r1, #3 + bl generate_grain_rows_neon + mov r1, #GRAIN_HEIGHT-3 + + vdup.32 q12, r7 + vld1.8 {d22[]}, [r4] // ar_coeffs_uv[0] + vmov.i8 q0, #0 + vmov.i8 q1, #255 + vdup.16 q9, r5 + vdup.16 q10, r6 + vext.8 q13, q0, q1, #10 + vext.8 q14, q1, q0, #2 + vneg.s32 q12, q12 + vmovl.s8 q11, d22 + +1: + vmov q1, q13 + bl gen_grain_uv_444_lag0_neon // 8 + vmov.i8 q1, #255 + bl gen_grain_uv_444_lag0_neon // 16 + bl gen_grain_uv_444_lag0_neon // 24 + bl gen_grain_uv_444_lag0_neon // 32 + bl gen_grain_uv_444_lag0_neon // 40 + bl gen_grain_uv_444_lag0_neon // 48 + bl gen_grain_uv_444_lag0_neon // 56 + bl gen_grain_uv_444_lag0_neon // 64 + bl gen_grain_uv_444_lag0_neon // 72 + vmov q1, q14 + bl gen_grain_uv_444_lag0_neon // 80 + get_grain_2 d16 + subs r1, r1, #1 + add r11, r11, #4 + vst1.32 {d16[0]}, [r0]! + bgt 1b +.endif + pop {r4-r11,pc} + +L(generate_grain_\type\()_lag1): + vpush {q4-q7} + mov r5, #128 + lsl r5, r5, lr // 128 << bitdepth_min_8 + sub r5, r5, #1 // (128 << bitdepth_min_8) - 1 + vld1.8 {d27[]}, [r4]! // ar_coeffs_y[0] + vld1.8 {d28[]}, [r4]! // ar_coeffs_y[1] + vld1.8 {d29[]}, [r4] // ar_coeffs_y[2] +.ifc \type, y + ldrsb r4, [r4, #1] // ar_coeffs_y[3] +.else + add r4, r4, #2 +.endif + + mov r1, #3 +.ifc \type, uv_444 + vld1.8 {d13[]}, [r4] // ar_coeffs_uv[4] + ldrsb r4, [r4, #-1] // ar_coeffs_uv[3] +.endif + bl generate_grain_rows_neon + vmovl.s8 q13, d27 + vmovl.s8 q12, d29 + vmovl.s8 q14, d28 + vmov d29, d24 +.ifc \type, uv_444 + vmovl.s8 q6, d13 +.endif + + mov r1, #GRAIN_HEIGHT - 3 +1: + bl sum_\type\()_lag1_left_neon // 8 + bl sum_\type\()_lag1_mid_neon // 16 + bl sum_\type\()_lag1_mid_neon // 24 + bl sum_\type\()_lag1_mid_neon // 32 + bl sum_\type\()_lag1_mid_neon // 40 + bl sum_\type\()_lag1_mid_neon // 48 + bl sum_\type\()_lag1_mid_neon // 56 + bl sum_\type\()_lag1_mid_neon // 64 + bl sum_\type\()_lag1_mid_neon // 72 + bl sum_\type\()_lag1_right_neon // 80 + get_grain_2 d16 + subs r1, r1, #1 +.ifc \type, uv_444 + add r11, r11, #4 +.endif + vst1.32 {d16[0]}, [r0]! + bgt 1b + + vpop {q4-q7} + pop {r4-r11,pc} + +L(generate_grain_\type\()_lag2): + vpush {q4-q7} + mov r5, #128 + lsl r5, r5, lr // 128 << bitdepth_min_8 + sub r5, r5, #1 // (128 << bitdepth_min_8) - 1 + vld1.8 {d28,d29}, [r4] // ar_coeffs_y[0-11], ar_coeffs_uv[0-12] + + vmov.s8 r4, d29[2] + vmov.s8 r10, d29[3] + + mov r1, #3 + bl generate_grain_rows_neon + + mov r1, #GRAIN_HEIGHT - 3 +1: + bl sum_\type\()_lag2_left_neon // 8 + bl sum_\type\()_lag2_mid_neon // 16 + bl sum_\type\()_lag2_mid_neon // 24 + bl sum_\type\()_lag2_mid_neon // 32 + bl sum_\type\()_lag2_mid_neon // 40 + bl sum_\type\()_lag2_mid_neon // 48 + bl sum_\type\()_lag2_mid_neon // 56 + bl sum_\type\()_lag2_mid_neon // 64 + bl sum_\type\()_lag2_mid_neon // 72 + bl sum_\type\()_lag2_right_neon // 80 + get_grain_2 d16 + subs r1, r1, #1 +.ifc \type, uv_444 + add r11, r11, #4 +.endif + vst1.32 {d16[0]}, [r0]! + bgt 1b + + vpop {q4-q7} + pop {r4-r11,pc} + +L(generate_grain_\type\()_lag3): + vpush {q4-q7} + mov r5, #128 + lsl r5, r5, lr // 128 << bitdepth_min_8 + sub r5, r5, #1 // (128 << bitdepth_min_8) - 1 + vld1.8 {q13, q14}, [r4] // ar_coeffs_y[0-23], ar_coeffs_uv[0-24] + + vmov.u8 r4, d28[5] + vmov.u8 r10, d28[6] + vmov.u8 r12, d28[7] + + orr r4, r4, r10, lsl #8 + orr r4, r4, r12, lsl #16 + + mov r1, #3 + vpush {d26} + bl generate_grain_rows_neon + vpop {d26} + + mov r1, #GRAIN_HEIGHT - 3 +1: + bl sum_\type\()_lag3_left_neon // 8 + bl sum_\type\()_lag3_mid_neon // 16 + bl sum_\type\()_lag3_mid_neon // 24 + bl sum_\type\()_lag3_mid_neon // 32 + bl sum_\type\()_lag3_mid_neon // 40 + bl sum_\type\()_lag3_mid_neon // 48 + bl sum_\type\()_lag3_mid_neon // 56 + bl sum_\type\()_lag3_mid_neon // 64 + bl sum_\type\()_lag3_mid_neon // 72 + bl sum_\type\()_lag3_right_neon // 80 + get_grain_2 d16 + subs r1, r1, #1 +.ifc \type, uv_444 + add r11, r11, #4 +.endif + vst1.32 {d16[0]}, [r0]! + bgt 1b + + vpop {q4-q7} + pop {r4-r11,pc} +endfunc +.endm + +gen_grain_82 y +gen_grain_82 uv_444 + +.macro set_height dst, type +.ifc \type, uv_420 + mov \dst, #SUB_GRAIN_HEIGHT-3 +.else + mov \dst, #GRAIN_HEIGHT-3 +.endif +.endm + +.macro increment_y_ptr reg, type +.ifc \type, uv_420 + add \reg, \reg, #2*GRAIN_WIDTH*2-(6*32) +.else + sub \reg, \reg, #6*32-GRAIN_WIDTH*2 +.endif +.endm + +.macro gen_grain_44 type +function generate_grain_\type\()_16bpc_neon, export=1 + push {r4-r11,lr} + + ldr r4, [sp, #36] + mov r12, r3 + movw r11, #(3*GRAIN_WIDTH-3)*2 + mov lr, #28 + add r11, r1, r11 + mov r1, r2 + mul r12, r12, lr + clz lr, r4 + + movrel r3, X(gaussian_sequence) + sub lr, lr, #24 // -bitdepth_min_8 + ldr r2, [r1, #FGD_SEED] + ldr r9, [r1, #FGD_GRAIN_SCALE_SHIFT] + add r4, r1, #FGD_AR_COEFFS_UV + add r9, r9, lr // grain_scale_shift - bitdepth_min_8 + adr r5, L(gen_grain_\type\()_tbl) + ldr r6, [r1, #FGD_AR_COEFF_LAG] + add r9, r9, #4 + ldr r6, [r5, r6, lsl #2] + vdup.16 q15, r9 // 4 - bitdepth_min_8 + data->grain_scale_shift + add r5, r5, r6 + vneg.s16 q15, q15 + + push {lr} + cmp r12, #0 + movw r10, #0x49d8 + movw lr, #0xb524 + // Intentionally using a separate register instead of moveq with an + // immediate constant, to avoid armv8 deprecated it instruction forms. + it eq + moveq r10, lr + add r4, r4, r12 // Add offset to ar_coeffs_uv[1] + eor r2, r2, r10 + pop {lr} + + ldr r7, [r1, #FGD_AR_COEFF_SHIFT] + neg lr, lr + mov r8, #1 + mov r10, #1 + lsl r8, r8, r7 // 1 << ar_coeff_shift + lsl r10, r10, r9 // 1 << (4 + data->grain_scale_shift) + lsr r8, r8, #1 // 1 << (ar_coeff_shift - 1) + lsr r10, r10, #1 // 1 << (4 + data->grain_scale_shift - 1) + bx r5 + + .align 2 +L(gen_grain_\type\()_tbl): + .word L(generate_grain_\type\()_lag0) - L(gen_grain_\type\()_tbl) + CONFIG_THUMB + .word L(generate_grain_\type\()_lag1) - L(gen_grain_\type\()_tbl) + CONFIG_THUMB + .word L(generate_grain_\type\()_lag2) - L(gen_grain_\type\()_tbl) + CONFIG_THUMB + .word L(generate_grain_\type\()_lag3) - L(gen_grain_\type\()_tbl) + CONFIG_THUMB + +L(generate_grain_\type\()_lag0): +.ifc \type, uv_420 + vpush {q4-q5} +.endif + mov r5, #128 + lsl r5, r5, lr // 128 << bitdepth_min_8 + sub r5, r5, #1 // (128 << bitdepth_min_8) - 1 + mvn r6, r5 // grain_min = ~grain_max + + mov r1, #3 + bl generate_grain_rows_44_neon + set_height r1, \type + + vdup.32 q12, r7 + vld1.8 {d22[]}, [r4] // ar_coeffs_uv[0] + vmov.i8 q0, #0 + vmov.i8 q1, #255 + vdup.16 q9, r5 + vdup.16 q10, r6 + vext.8 q13, q0, q1, #10 + vext.8 q14, q1, q0, #14 + vneg.s32 q12, q12 + vmovl.s8 q11, d22 + +1: + vmov q1, q13 + bl gen_grain_\type\()_lag0_8_neon // 8 + vmov.i8 q1, #255 + bl gen_grain_\type\()_lag0_8_neon // 16 + bl gen_grain_\type\()_lag0_8_neon // 24 + bl gen_grain_\type\()_lag0_8_neon // 32 + bl gen_grain_\type\()_lag0_8_neon // 40 + vmov q1, q14 + bl gen_grain_\type\()_lag0_4_neon // 44 + subs r1, r1, #1 + increment_y_ptr r11, \type + add r0, r0, #GRAIN_WIDTH*2-6*16 + bgt 1b + +.ifc \type, uv_420 + vpop {q4-q5} +.endif + pop {r4-r11,pc} + +L(generate_grain_\type\()_lag1): + vpush {q4-q7} + mov r5, #128 + lsl r5, r5, lr // 128 << bitdepth_min_8 + sub r5, r5, #1 // (128 << bitdepth_min_8) - 1 + vld1.8 {d27[]}, [r4]! // ar_coeffs_uv[0] + vld1.8 {d28[]}, [r4]! // ar_coeffs_uv[1] + vld1.8 {d29[]}, [r4] // ar_coeffs_uv[2] + add r4, r4, #2 + + mov r1, #3 + vld1.8 {d13[]}, [r4] // ar_coeffs_uv[4] + ldrsb r4, [r4, #-1] // ar_coeffs_uv[3] + bl generate_grain_rows_44_neon + vmovl.s8 q13, d27 + vmovl.s8 q12, d29 + vmovl.s8 q14, d28 + vmov d29, d24 + vmovl.s8 q6, d13 + + set_height r1, \type +1: + bl sum_\type\()_lag1_left_neon // 8 + bl sum_\type\()_lag1_mid_neon // 16 + bl sum_\type\()_lag1_mid_neon // 24 + bl sum_\type\()_lag1_mid_neon // 32 + bl sum_\type\()_lag1_mid_neon // 40 + bl sum_\type\()_lag1_right_neon // 44 + subs r1, r1, #1 + increment_y_ptr r11, \type + add r0, r0, #GRAIN_WIDTH*2-6*16 + bgt 1b + + vpop {q4-q7} + pop {r4-r11,pc} + +L(generate_grain_\type\()_lag2): + vpush {q4-q7} + mov r5, #128 + lsl r5, r5, lr // 128 << bitdepth_min_8 + sub r5, r5, #1 // (128 << bitdepth_min_8) - 1 + vld1.8 {d28,d29}, [r4] // ar_coeffs_uv[0-12] + + vmov.s8 r4, d29[2] + vmov.s8 r10, d29[3] + + mov r1, #3 + bl generate_grain_rows_44_neon + + set_height r1, \type +1: + bl sum_\type\()_lag2_left_neon // 8 + bl sum_\type\()_lag2_mid_neon // 16 + bl sum_\type\()_lag2_mid_neon // 24 + bl sum_\type\()_lag2_mid_neon // 32 + bl sum_\type\()_lag2_mid_neon // 40 + bl sum_\type\()_lag2_right_neon // 44 + subs r1, r1, #1 + increment_y_ptr r11, \type + add r0, r0, #GRAIN_WIDTH*2-6*16 + bgt 1b + + vpop {q4-q7} + pop {r4-r11,pc} + +L(generate_grain_\type\()_lag3): + vpush {q4-q7} + mov r5, #128 + lsl r5, r5, lr // 128 << bitdepth_min_8 + sub r5, r5, #1 // (128 << bitdepth_min_8) - 1 + vld1.8 {q13, q14}, [r4] // ar_coeffs_y[0-23], ar_coeffs_uv[0-24] + + vmov.u8 r4, d28[5] + vmov.u8 r10, d28[6] + vmov.u8 r12, d28[7] + + orr r4, r4, r10, lsl #8 + orr r4, r4, r12, lsl #16 + + mov r1, #3 + bl generate_grain_rows_44_neon + + set_height r1, \type +1: + bl sum_\type\()_lag3_left_neon // 8 + bl sum_\type\()_lag3_mid_neon // 16 + bl sum_\type\()_lag3_mid_neon // 24 + bl sum_\type\()_lag3_mid_neon // 32 + bl sum_\type\()_lag3_mid_neon // 40 + bl sum_\type\()_lag3_right_neon // 44 + subs r1, r1, #1 + increment_y_ptr r11, \type + add r0, r0, #GRAIN_WIDTH*2-6*16 + bgt 1b + + vpop {q4-q7} + pop {r4-r11,pc} +endfunc +.endm + +gen_grain_44 uv_420 +gen_grain_44 uv_422 + +.macro gather_interleaved dst1, dst2, src1, src2, src3, src4, off + vmov.u16 r11, \src1[0+\off] + vmov.u16 r12, \src3[0+\off] + add r11, r11, r3 + vmov.u16 lr, \src1[2+\off] + add r12, r12, r3 + vld1.8 {\dst1[0+\off]}, [r11] + vmov.u16 r11, \src3[2+\off] + add lr, lr, r3 + vld1.8 {\dst2[0+\off]}, [r12] + vmov.u16 r12, \src2[0+\off] + add r11, r11, r3 + vld1.8 {\dst1[2+\off]}, [lr] + vmov.u16 lr, \src4[0+\off] + add r12, r12, r3 + vld1.8 {\dst2[2+\off]}, [r11] + vmov.u16 r11, \src2[2+\off] + add lr, lr, r3 + vld1.8 {\dst1[4+\off]}, [r12] + vmov.u16 r12, \src4[2+\off] + add r11, r11, r3 + vld1.8 {\dst2[4+\off]}, [lr] + add r12, r12, r3 + vld1.8 {\dst1[6+\off]}, [r11] + vld1.8 {\dst2[6+\off]}, [r12] +.endm + +.macro gather dst1, dst2, dst3, dst4, src1, src2, src3, src4, src5, src6, src7, src8 + gather_interleaved \dst1, \dst3, \src1, \src2, \src5, \src6, 0 + gather_interleaved \dst1, \dst3, \src1, \src2, \src5, \src6, 1 + gather_interleaved \dst2, \dst4, \src3, \src4, \src7, \src8, 0 + gather_interleaved \dst2, \dst4, \src3, \src4, \src7, \src8, 1 +.endm + +function gather32_neon + push {r11-r12,lr} + gather d8, d9, d10, d11, d0, d1, d2, d3, d4, d5, d6, d7 + pop {r11-r12,pc} +endfunc + +function gather16_neon + push {r11-r12,lr} + gather_interleaved d8, d9, d0, d1, d2, d3, 0 + gather_interleaved d8, d9, d0, d1, d2, d3, 1 + pop {r11-r12,pc} +endfunc + +const overlap_coeffs_0, align=4 + .short 27, 17, 0, 0 + .short 17, 27, 32, 32 +endconst + +const overlap_coeffs_1, align=4 + .short 23, 0, 0, 0 + .short 22, 32, 32, 32 +endconst + +.macro calc_offset offx, offy, src, sx, sy + and \offy, \src, #0xF // randval & 0xF + lsr \offx, \src, #4 // randval >> 4 +.if \sy == 0 + add \offy, \offy, \offy // 2 * (randval & 0xF) +.endif +.if \sx == 0 + add \offx, \offx, \offx // 2 * (randval >> 4) +.endif +.endm + +.macro add_offset dst, offx, offy, src, stride + mla \dst, \stride, \offy, \src // grain_lut += grain_stride * offy + add \dst, \dst, \offx, lsl #1 // grain_lut += offx +.endm + +// void dav1d_fgy_32x32_16bpc_neon(pixel *const dst, const pixel *const src, +// const ptrdiff_t stride, +// const uint8_t scaling[SCALING_SIZE], +// const int scaling_shift, +// const entry grain_lut[][GRAIN_WIDTH], +// const int offsets[][2], +// const int h, const ptrdiff_t clip, +// const ptrdiff_t type, +// const int bitdepth_max); +function fgy_32x32_16bpc_neon, export=1 + push {r4-r11,lr} + vpush {q4-q7} + ldrd r4, r5, [sp, #100] // scaling_shift, grain_lut + ldrd r6, r7, [sp, #108] // offsets, h + ldr r8, [sp, #116] // clip + mov r9, #GRAIN_WIDTH*2 // grain_lut stride + ldr r10, [sp, #124] // bitdepth_max + + eor r4, r4, #15 // 15 - scaling_shift + vdup.16 q6, r10 // bitdepth_max + clz r10, r10 + vdup.16 q13, r4 // 15 - scaling_shift + rsb r10, r10, #24 // bitdepth_min_8 + cmp r8, #0 + vdup.16 q12, r10 // bitdepth_min_8 + + movrel_local r12, overlap_coeffs_0 + + beq 1f + // clip + vmov.i16 q14, #16 + vmov.i16 q15, #235 + vshl.s16 q14, q14, q12 + vshl.s16 q15, q15, q12 + b 2f +1: + // no clip + vmov.i16 q14, #0 + vmov q15, q6 +2: + vshr.u16 q6, q6, #1 // grain_max + + vld1.16 {d24, d25}, [r12, :128] // overlap_coeffs + + add r5, r5, #18 // grain_lut += 9 + add r5, r5, r9, lsl #3 // grain_lut += 8 * grain_stride + add r5, r5, r9 // grain_lut += grain_stride + + ldr r10, [r6, #8] // offsets[1][0] + calc_offset r10, r4, r10, 0, 0 + add_offset r4, r10, r4, r5, r9 + ldr r10, [r6, #4] // offsets[0][1] + calc_offset r10, r11, r10, 0, 0 + add_offset r11, r10, r11, r5, r9 + ldr r10, [r6, #12] // offsets[1][1] + calc_offset r10, r8, r10, 0, 0 + add_offset r8, r10, r8, r5, r9 + ldr r6, [r6] // offsets[0][0] + calc_offset r6, lr, r6, 0, 0 + add_offset r5, r6, lr, r5, r9 + + add r4, r4, #32*2 // grain_lut += BLOCK_SIZE * bx + add r6, r11, r9, lsl #5 // grain_lut += grain_stride * BLOCK_SIZE * by + + ldr r10, [sp, #120] // type + adr r11, L(fgy_loop_tbl) + + tst r10, #1 + ldr r10, [r11, r10, lsl #2] + + add r8, r8, r9, lsl #5 // grain_lut += grain_stride * BLOCK_SIZE * by + add r8, r8, #32*2 // grain_lut += BLOCK_SIZE * bx + + add r11, r11, r10 + + beq 1f + // y overlap + vdup.16 d14, d24[0] + vdup.16 d15, d24[1] + mov r10, r7 // backup actual h + mov r7, #2 +1: + sub r2, r2, #32 // src_stride -= 32 + sub r9, r9, #32 // grain_stride -= 32 + bx r11 +endfunc + +function fgy_loop_neon +L(fgy_loop_tbl): + .word L(loop_00) - L(fgy_loop_tbl) + CONFIG_THUMB + .word L(loop_01) - L(fgy_loop_tbl) + CONFIG_THUMB + .word L(loop_10) - L(fgy_loop_tbl) + CONFIG_THUMB + .word L(loop_11) - L(fgy_loop_tbl) + CONFIG_THUMB + +.macro fgy ox, oy +L(loop_\ox\oy): +1: +.if \ox + vld1.16 {d0}, [r4], r9 // grain_lut old +.endif +.if \oy + vld1.16 {q2, q3}, [r6]! // grain_lut top +.endif +.if \ox && \oy + vld1.16 {d2}, [r8], r9 // grain_lut top old +.endif +.if \oy + vld1.16 {q4, q5}, [r6], r9 // grain_lut top +.endif +.if !\ox && !\oy + vld1.16 {q0, q1}, [r1, :128]! // src +.endif + vld1.16 {q8, q9}, [r5]! // grain_lut +.if !\ox && !\oy + vld1.16 {q2, q3}, [r1, :128], r2 // src +.endif +.if !\oy + vmvn.i16 q5, #0xf000 // 0x0fff +.endif + vld1.16 {q10, q11}, [r5], r9 // grain_lut + +.if \ox + add r4, r4, #32 + vmull.s16 q0, d0, d24 + vmlal.s16 q0, d16, d25 +.endif + +.if \oy +.if \ox + add r8, r8, #32 + vmull.s16 q1, d2, d24 + vmlal.s16 q1, d4, d25 + vqrshrn.s32 d16, q0, #5 + vmvn d0, d12 // grain_min + vqrshrn.s32 d4, q1, #5 + vmin.s16 d16, d16, d12 + vmin.s16 d4, d4, d12 + vmax.s16 d16, d16, d0 + vmax.s16 d4, d4, d0 +.endif + + vmull.s16 q0, d4, d14 + vmull.s16 q1, d5, d14 + vmull.s16 q2, d6, d14 + vmull.s16 q3, d7, d14 + vmlal.s16 q0, d16, d15 + vmlal.s16 q1, d17, d15 + vmlal.s16 q2, d18, d15 + vmlal.s16 q3, d19, d15 + vmull.s16 q8, d20, d15 + vmull.s16 q9, d21, d15 + vmull.s16 q10, d22, d15 + vmull.s16 q11, d23, d15 + vmlal.s16 q8, d8, d14 + vmlal.s16 q9, d9, d14 + vmlal.s16 q10, d10, d14 + vmlal.s16 q11, d11, d14 + vmvn q4, q6 // grain_min + vqrshrn.s32 d0, q0, #5 + vqrshrn.s32 d1, q1, #5 + vqrshrn.s32 d2, q2, #5 + vqrshrn.s32 d3, q3, #5 + vqrshrn.s32 d4, q8, #5 + vqrshrn.s32 d5, q9, #5 + vqrshrn.s32 d6, q10, #5 + vqrshrn.s32 d7, q11, #5 + vmin.s16 q8, q0, q6 + vmin.s16 q9, q1, q6 + vld1.16 {q0, q1}, [r1, :128]! // src + vmin.s16 q10, q2, q6 + vmin.s16 q11, q3, q6 + vmax.s16 q8, q8, q4 + vmax.s16 q9, q9, q4 + vld1.16 {q2, q3}, [r1, :128], r2 // src + vmvn.i16 q5, #0xf000 // 0x0fff + vmax.s16 q10, q10, q4 + vmax.s16 q11, q11, q4 +.elseif \ox + vmvn d4, d12 // grain_min + vqrshrn.s32 d16, q0, #5 + vld1.16 {q0, q1}, [r1, :128]! // src + vmin.s16 d16, d16, d12 + vmax.s16 d16, d16, d4 + vld1.16 {q2, q3}, [r1, :128], r2 // src +.endif + + // Make sure that uninitialized pixels out of range past the right + // edge are in range; their actual values shouldn't matter. + vand q0, q0, q5 + vand q1, q1, q5 + vand q2, q2, q5 + vand q3, q3, q5 + + bl gather32_neon + +.if \ox || \oy + vpush {q6-q7} +.endif + + vmovl.u8 q6, d8 // scaling + vmovl.u8 q7, d9 + vmovl.u8 q4, d10 + vmovl.u8 q5, d11 + + vshl.u16 q6, q6, q13 // scaling << (15 - scaling_shift) + vshl.u16 q7, q7, q13 + vshl.u16 q4, q4, q13 + vshl.u16 q5, q5, q13 + + vqrdmulh.s16 q8, q8, q6 // round2((scaling << (15 - scaling_shift) * grain, 15) + vqrdmulh.s16 q9, q9, q7 + vqrdmulh.s16 q10, q10, q4 + vqrdmulh.s16 q11, q11, q5 + +.if \ox || \oy + vpop {q6-q7} +.endif + + vqadd.s16 q0, q0, q8 // *src + noise + vqadd.s16 q1, q1, q9 + vqadd.s16 q2, q2, q10 + vqadd.s16 q3, q3, q11 + + vmax.s16 q0, q0, q14 + vmax.s16 q1, q1, q14 + vmax.s16 q2, q2, q14 + vmax.s16 q3, q3, q14 + vmin.s16 q0, q0, q15 + vmin.s16 q1, q1, q15 + vmin.s16 q2, q2, q15 + vmin.s16 q3, q3, q15 + + vst1.16 {q0, q1}, [r0, :128]! // dst + subs r7, r7, #1 +.if \oy + vdup.16 d14, d25[0] + vdup.16 d15, d25[1] +.endif + vst1.16 {q2, q3}, [r0, :128], r2 // dst + bgt 1b + +.if \oy + cmp r10, #2 + sub r7, r10, #2 // restore actual remaining h + bgt L(loop_\ox\()0) +.endif + vpop {q4-q7} + pop {r4-r11,pc} +.endm + + fgy 0, 0 + fgy 0, 1 + fgy 1, 0 + fgy 1, 1 +endfunc + +// void dav1d_fguv_32x32_420_16bpc_neon(pixel *const dst, +// const pixel *const src, +// const ptrdiff_t stride, +// const uint8_t scaling[SCALING_SIZE], +// const Dav1dFilmGrainData *const data, +// const entry grain_lut[][GRAIN_WIDTH], +// const pixel *const luma_row, +// const ptrdiff_t luma_stride, +// const int offsets[][2], +// const ptrdiff_t h, const ptrdiff_t uv, +// const ptrdiff_t is_id, +// const ptrdiff_t type, +// const int bitdepth_max); +.macro fguv layout, sx, sy +function fguv_32x32_\layout\()_16bpc_neon, export=1 + push {r4-r11,lr} + vpush {q4-q7} + ldrd r4, r5, [sp, #100] // data, grain_lut + ldrd r10, r11, [sp, #124] // uv, is_id + ldr r6, [sp, #136] // bitdepth_max + + clz r7, r6 + rsb r7, r7, #24 // bitdepth_min_8 + + // !csfl + add r10, r4, r10, lsl #2 // + 4*uv + add r12, r10, #FGD_UV_LUMA_MULT + add lr, r10, #FGD_UV_MULT + ldrh r10, [r10, #FGD_UV_OFFSET] // uv_offset + vld1.16 {d30[]}, [r12] // uv_luma_mult + lsl r10, r10, r7 // uv_offset << bitdepth_min_8 + vld1.16 {d30[1]}, [lr] // uv_mult + + ldr lr, [r4, #FGD_SCALING_SHIFT] + ldr r12, [r4, #FGD_CLIP_TO_RESTRICTED_RANGE] + eor lr, lr, #15 // 15 - scaling_shift + + vmov.16 d30[2], r10 // uv_offset << bitdepth_min_8 + + cmp r12, #0 + vdup.16 q13, lr // 15 - scaling_shift + + beq 1f + // clip + cmp r11, #0 + mov r8, #16 + mov r9, #240 + lsl r8, r8, r7 + lsl r9, r9, r7 + beq 2f + // is_id + mov r9, #235 + lsl r9, r9, r7 + b 2f +1: + // no clip + mov r8, #0 + mov r9, r6 // bitdepth_max +2: + vmov.16 d30[3], r6 // bitdepth_max + vdup.16 d31, r8 // clip_min + + mov r10, #GRAIN_WIDTH*2 // grain_lut stride + +.if \sy + mov r6, #23 + mov r7, #22 +.else + mov r6, #27 + mov r7, #17 +.endif + vmov.16 d31[1], r9 // clip_max + + ldrd r8, r9, [sp, #116] // offsets, h + + add r5, r5, #(2*(3 + (2 >> \sx)*3)) // grain_lut += 9 or 6 +.if \sy + add r5, r5, r10, lsl #2 // grain_lut += 4 * grain_stride + add r5, r5, r10, lsl #1 // grain_lut += 2 * grain_stride +.else + add r5, r5, r10, lsl #3 // grain_lut += 8 * grain_stride + add r5, r5, r10 // grain_lut += grain_stride +.endif + vmov.16 d31[2], r6 // overlap y [0] + + ldr r12, [r8, #8] // offsets[1][0] + calc_offset r12, r4, r12, \sx, \sy + add_offset r4, r12, r4, r5, r10 + + ldr r12, [r8, #4] // offsets[0][1] + calc_offset r12, lr, r12, \sx, \sy + add_offset lr, r12, lr, r5, r10 + + ldr r12, [r8, #12] // offsets[1][1] + calc_offset r12, r11, r12, \sx, \sy + add_offset r11, r12, r11, r5, r10 + + ldr r8, [r8] // offsets[0][0] + calc_offset r8, r12, r8, \sx, \sy + add_offset r5, r8, r12, r5, r10 + + vmov.16 d31[3], r7 // overlap y [1] + + add r4, r4, #2*(32 >> \sx) // grain_lut += BLOCK_SIZE * bx + add r8, lr, r10, lsl #(5 - \sy) // grain_lut += grain_stride * BLOCK_SIZE * by + add r11, r11, r10, lsl #(5 - \sy) // grain_lut += grain_stride * BLOCK_SIZE * by + add r11, r11, #2*(32 >> \sx) // grain_lut += BLOCK_SIZE * bx + + movrel_local r12, overlap_coeffs_\sx + ldr lr, [sp, #132] // type + ldrd r6, r7, [sp, #108] // luma_row, luma_stride + + vld1.16 {d24, d25}, [r12, :128] // overlap_coeffs + + movrel_local r12, L(fguv_loop_sx\sx\()_tbl) +#if CONFIG_THUMB + // This uses movrel_local instead of adr above, because the target + // can be out of range for adr. But movrel_local leaves the thumb bit + // set on COFF (but probably wouldn't if building for thumb on ELF), + // thus try to clear the bit for robustness. + bic r12, r12, #1 +#endif + + tst lr, #1 + ldr lr, [r12, lr, lsl #2] + + add r12, r12, lr + + beq 1f + // y overlap + sub lr, r9, #(2 >> \sy) // backup remaining h + mov r9, #(2 >> \sy) + +1: +.if \sy + add r7, r7, r7 // luma_stride *= 2 +.endif + sub r7, r7, #32 // luma_stride -= 32 + + bx r12 +endfunc +.endm + +fguv 420, 1, 1 +fguv 422, 1, 0 +fguv 444, 0, 0 + +function fguv_loop_sx0_neon +L(fguv_loop_sx0_tbl): + .word L(fguv_loop_sx0_csfl0_00) - L(fguv_loop_sx0_tbl) + CONFIG_THUMB + .word L(fguv_loop_sx0_csfl0_01) - L(fguv_loop_sx0_tbl) + CONFIG_THUMB + .word L(fguv_loop_sx0_csfl0_10) - L(fguv_loop_sx0_tbl) + CONFIG_THUMB + .word L(fguv_loop_sx0_csfl0_11) - L(fguv_loop_sx0_tbl) + CONFIG_THUMB + .word L(fguv_loop_sx0_csfl1_00) - L(fguv_loop_sx0_tbl) + CONFIG_THUMB + .word L(fguv_loop_sx0_csfl1_01) - L(fguv_loop_sx0_tbl) + CONFIG_THUMB + .word L(fguv_loop_sx0_csfl1_10) - L(fguv_loop_sx0_tbl) + CONFIG_THUMB + .word L(fguv_loop_sx0_csfl1_11) - L(fguv_loop_sx0_tbl) + CONFIG_THUMB + +.macro fguv_loop_sx0 csfl, ox, oy +L(fguv_loop_sx0_csfl\csfl\()_\ox\oy): + sub r2, r2, #32 // src_stride -= 32 + sub r10, r10, #32 // grain_stride -= 32 +.if \oy + mov r12, lr +.endif +L(fguv_loop_sx0_csfl\csfl\()_\ox\oy\()_loopstart): +1: +.if \ox + vld1.16 {d0}, [r4], r10 // grain_lut old +.endif +.if \oy + vld1.16 {q2, q3}, [r8]! // grain_lut top +.endif +.if \ox && \oy + vld1.16 {d2}, [r11], r10 // grain_lut top old +.endif +.if !\ox && !\oy + vld1.16 {q0, q1}, [r6, :128]! // luma +.endif + vld1.16 {q8, q9}, [r5]! // grain_lut +.if \oy + vld1.16 {q4, q5}, [r8], r10 // grain_lut top +.endif +.if !\ox && !\oy + vld1.16 {q2, q3}, [r6, :128], r7 // luma +.endif +.if \oy + vdup.16 d28, d31[2] // overlap y coeff + vdup.16 d29, d31[3] // overlap y coeff +.endif + vld1.16 {q10, q11}, [r5], r10 // grain_lut + +.if \ox + vdup.16 q7, d30[3] // bitdepth_max + add r4, r4, #32 + vmull.s16 q0, d0, d24 + vshr.u16 q7, q7, #1 // grain_max + vmlal.s16 q0, d16, d25 + vmvn q6, q7 // grain_min +.endif + +.if \oy +.if \ox + add r11, r11, #32 + vmull.s16 q1, d2, d24 + vmlal.s16 q1, d4, d25 + vqrshrn.s32 d16, q0, #5 + vqrshrn.s32 d4, q1, #5 + vmin.s16 d4, d4, d14 + vmin.s16 d16, d16, d14 + vmax.s16 d4, d4, d12 + vmax.s16 d16, d16, d12 +.endif + + vmull.s16 q0, d4, d28 + vmull.s16 q1, d5, d28 + vmull.s16 q2, d6, d28 + vmull.s16 q3, d7, d28 +.if !\ox + vdup.16 q7, d30[3] // bitdepth_max +.endif + vmlal.s16 q0, d16, d29 + vmlal.s16 q1, d17, d29 + vmlal.s16 q2, d18, d29 + vmlal.s16 q3, d19, d29 +.if !\ox + vshr.u16 q7, q7, #1 // grain_max +.endif + vmull.s16 q8, d20, d29 + vmull.s16 q9, d21, d29 + vmull.s16 q10, d22, d29 + vmull.s16 q11, d23, d29 +.if !\ox + vmvn q6, q7 // grain_min +.endif + vmlal.s16 q8, d8, d28 + vmlal.s16 q9, d9, d28 + vmlal.s16 q10, d10, d28 + vmlal.s16 q11, d11, d28 + vqrshrn.s32 d0, q0, #5 + vqrshrn.s32 d1, q1, #5 + vqrshrn.s32 d2, q2, #5 + vqrshrn.s32 d3, q3, #5 + vqrshrn.s32 d4, q8, #5 + vqrshrn.s32 d5, q9, #5 + vqrshrn.s32 d6, q10, #5 + vqrshrn.s32 d7, q11, #5 + vmin.s16 q8, q0, q7 + vmin.s16 q9, q1, q7 + vld1.16 {q0, q1}, [r6, :128]! // luma + vmin.s16 q10, q2, q7 + vmin.s16 q11, q3, q7 + vmax.s16 q8, q8, q6 + vmax.s16 q9, q9, q6 + vld1.16 {q2, q3}, [r6, :128], r7 // luma + vmax.s16 q10, q10, q6 + vmax.s16 q11, q11, q6 +.elseif \ox + vqrshrn.s32 d16, q0, #5 + vld1.16 {q0, q1}, [r6, :128]! // luma + vmin.s16 d16, d16, d14 + vld1.16 {q2, q3}, [r6, :128], r7 // luma + vmax.s16 d16, d16, d12 +.endif + +.if !\csfl + vdup.16 d28, d30[0] // uv_luma_mult + vld1.16 {q4, q5}, [r1, :128]! // src + vdup.16 d29, d30[1] // uv_mult + vmull.s16 q6, d0, d28 + vmull.s16 q7, d1, d28 + vmull.s16 q0, d2, d28 + vmull.s16 q1, d3, d28 + vmlal.s16 q6, d8, d29 + vmlal.s16 q7, d9, d29 + vmlal.s16 q0, d10, d29 + vmlal.s16 q1, d11, d29 + vld1.16 {q4, q5}, [r1, :128] // src + sub r1, r1, #32 + vshrn.s32 d12, q6, #6 + vshrn.s32 d13, q7, #6 + vshrn.s32 d14, q0, #6 + vshrn.s32 d15, q1, #6 + vmull.s16 q0, d4, d28 + vmull.s16 q1, d5, d28 + vmull.s16 q2, d6, d28 + vmull.s16 q3, d7, d28 + vmlal.s16 q0, d8, d29 + vmlal.s16 q1, d9, d29 + vmlal.s16 q2, d10, d29 + vmlal.s16 q3, d11, d29 + vdup.16 q14, d30[2] // uv_offset + vshrn.s32 d0, q0, #6 + vshrn.s32 d1, q1, #6 + vshrn.s32 d2, q2, #6 + vshrn.s32 d3, q3, #6 + vdup.16 q4, d30[3] // bitdepth_max + vmov.i16 q5, #0 + vadd.i16 q6, q6, q14 + vadd.i16 q7, q7, q14 + vadd.i16 q2, q0, q14 + vadd.i16 q3, q1, q14 + vmin.s16 q0, q6, q4 + vmin.s16 q1, q7, q4 + vmin.s16 q2, q2, q4 + vmin.s16 q3, q3, q4 + vmax.s16 q0, q0, q5 + vmax.s16 q1, q1, q5 + vmax.s16 q2, q2, q5 + vmax.s16 q3, q3, q5 +.else + vdup.16 q14, d30[3] // bitdepth_max + // Make sure that uninitialized pixels out of range past the right + // edge are in range; their actual values shouldn't matter. + vand q0, q0, q14 + vand q1, q1, q14 + vand q2, q2, q14 + vand q3, q3, q14 +.endif + + bl gather32_neon + + vld1.16 {q0, q1}, [r1, :128]! // src + + vmovl.u8 q6, d8 // scaling + vmovl.u8 q7, d9 + vmovl.u8 q4, d10 + vmovl.u8 q5, d11 + + vld1.16 {q2, q3}, [r1, :128], r2 // src + + vshl.u16 q6, q6, q13 // scaling << (15 - scaling_shift) + vshl.u16 q7, q7, q13 + vshl.u16 q4, q4, q13 + vshl.u16 q5, q5, q13 + + vqrdmulh.s16 q8, q8, q6 // round2((scaling << (15 - scaling_shift) * grain, 15) + vqrdmulh.s16 q9, q9, q7 + vqrdmulh.s16 q10, q10, q4 + vqrdmulh.s16 q11, q11, q5 + + + vdup.16 q4, d31[0] // clip_min + vdup.16 q5, d31[1] // clip_max + + vqadd.s16 q0, q0, q8 // *src + noise + vqadd.s16 q1, q1, q9 + vqadd.s16 q2, q2, q10 + vqadd.s16 q3, q3, q11 + +.if \oy + vmov.32 lr, d25[0] // 2 first 16 bit coeffs from overlap x +.endif + + vmax.s16 q0, q0, q4 + vmax.s16 q1, q1, q4 + vmax.s16 q2, q2, q4 + vmax.s16 q3, q3, q4 + vmin.s16 q0, q0, q5 + vmin.s16 q1, q1, q5 + vmin.s16 q2, q2, q5 + vmin.s16 q3, q3, q5 + + vst1.16 {q0, q1}, [r0, :128]! // dst + + subs r9, r9, #1 +.if \oy + vmov.32 d31[1], lr // new coeffs for overlap y +.endif + + vst1.16 {q2, q3}, [r0, :128], r2 // dst + bgt 1b + +.if \oy + cmp r12, #0 + mov r9, r12 // restore actual remaining h + bgt L(fguv_loop_sx0_csfl\csfl\()_\ox\()0_loopstart) +.endif + b 9f +.endm + fguv_loop_sx0 0, 0, 0 + fguv_loop_sx0 0, 0, 1 + fguv_loop_sx0 0, 1, 0 + fguv_loop_sx0 0, 1, 1 + fguv_loop_sx0 1, 0, 0 + fguv_loop_sx0 1, 0, 1 + fguv_loop_sx0 1, 1, 0 + fguv_loop_sx0 1, 1, 1 + +9: + vpop {q4-q7} + pop {r4-r11,pc} +endfunc + +function fguv_loop_sx1_neon +L(fguv_loop_sx1_tbl): + .word L(fguv_loop_sx1_csfl0_00) - L(fguv_loop_sx1_tbl) + CONFIG_THUMB + .word L(fguv_loop_sx1_csfl0_01) - L(fguv_loop_sx1_tbl) + CONFIG_THUMB + .word L(fguv_loop_sx1_csfl0_10) - L(fguv_loop_sx1_tbl) + CONFIG_THUMB + .word L(fguv_loop_sx1_csfl0_11) - L(fguv_loop_sx1_tbl) + CONFIG_THUMB + .word L(fguv_loop_sx1_csfl1_00) - L(fguv_loop_sx1_tbl) + CONFIG_THUMB + .word L(fguv_loop_sx1_csfl1_01) - L(fguv_loop_sx1_tbl) + CONFIG_THUMB + .word L(fguv_loop_sx1_csfl1_10) - L(fguv_loop_sx1_tbl) + CONFIG_THUMB + .word L(fguv_loop_sx1_csfl1_11) - L(fguv_loop_sx1_tbl) + CONFIG_THUMB + +.macro fguv_loop_sx1 csfl, ox, oy +L(fguv_loop_sx1_csfl\csfl\()_\ox\oy): +.if \oy + mov r12, lr +.endif +1: +.if \ox + vld1.16 {d0}, [r4], r10 // grain_lut old +.endif +.if \ox && \oy + vld1.16 {d2}, [r11], r10 // grain_lut top old +.endif +.if \oy + vld1.16 {q2, q3}, [r8], r10 // grain_lut top +.endif +.if !\ox && !\oy + vld1.16 {q0, q1}, [r6, :128]! // luma +.endif + vld1.16 {q8, q9}, [r5], r10 // grain_lut +.if \oy + vdup.16 d28, d31[2] // overlap y coeff + vdup.16 d29, d31[3] // overlap y coeff +.endif +.if !\ox && !\oy + vld1.16 {q2, q3}, [r6, :128], r7 // luma +.endif + +.if \ox + vdup.16 q7, d30[3] // bitdepth_max + vmull.s16 q0, d0, d24 + vshr.u16 q7, q7, #1 // grain_max + vmlal.s16 q0, d16, d25 + vmvn q6, q7 // grain_min +.endif + +.if \oy +.if \ox + vmull.s16 q1, d2, d24 + vmlal.s16 q1, d4, d25 + vqrshrn.s32 d16, q0, #5 + vqrshrn.s32 d4, q1, #5 + vmin.s16 d4, d4, d14 + vmin.s16 d16, d16, d14 + vmax.s16 d4, d4, d12 + vmax.s16 d16, d16, d12 +.endif + + vmull.s16 q0, d4, d28 + vmull.s16 q1, d5, d28 + vmull.s16 q2, d6, d28 + vmull.s16 q3, d7, d28 +.if !\ox + vdup.16 q7, d30[3] // bitdepth_max +.endif + vmlal.s16 q0, d16, d29 + vmlal.s16 q1, d17, d29 + vmlal.s16 q2, d18, d29 + vmlal.s16 q3, d19, d29 +.if !\ox + vshr.u16 q7, q7, #1 // grain_max +.endif + vqrshrn.s32 d16, q0, #5 + vqrshrn.s32 d17, q1, #5 + vqrshrn.s32 d18, q2, #5 + vqrshrn.s32 d19, q3, #5 +.if !\ox + vmvn q6, q7 // grain_min +.endif + vld1.16 {q0, q1}, [r6, :128]! // luma + vmin.s16 q8, q8, q7 + vmin.s16 q9, q9, q7 + vmax.s16 q8, q8, q6 + vmax.s16 q9, q9, q6 + vld1.16 {q2, q3}, [r6, :128], r7 // luma +.elseif \ox + vqrshrn.s32 d16, q0, #5 + vld1.16 {q0, q1}, [r6, :128]! // luma + vmin.s16 d16, d16, d14 + vld1.16 {q2, q3}, [r6, :128], r7 // luma + vmax.s16 d16, d16, d12 +.endif + + vpadd.i16 d0, d0, d1 + vpadd.i16 d1, d2, d3 + vpadd.i16 d2, d4, d5 + vpadd.i16 d3, d6, d7 + vrshr.u16 q0, q0, #1 + vrshr.u16 q1, q1, #1 +.if !\csfl + vdup.16 d28, d30[0] // uv_luma_mult + vld1.16 {q2, q3}, [r1, :128], r2 // src + vdup.16 d29, d30[1] // uv_mult + vmull.s16 q6, d0, d28 + vmull.s16 q7, d1, d28 + vmull.s16 q0, d2, d28 + vmull.s16 q1, d3, d28 + vmlal.s16 q6, d4, d29 + vmlal.s16 q7, d5, d29 + vmlal.s16 q0, d6, d29 + vmlal.s16 q1, d7, d29 + vshrn.s32 d12, q6, #6 + vshrn.s32 d13, q7, #6 + vshrn.s32 d14, q0, #6 + vshrn.s32 d15, q1, #6 + vdup.16 q14, d30[2] // uv_offset + vdup.16 q4, d30[3] // bitdepth_max + vmov.i16 q5, #0 + vadd.i16 q6, q6, q14 + vadd.i16 q7, q7, q14 + vmin.s16 q0, q6, q4 + vmin.s16 q1, q7, q4 + vmax.s16 q0, q0, q5 + vmax.s16 q1, q1, q5 +.else + vdup.16 q14, d30[3] // bitdepth_max + vld1.16 {q2, q3}, [r1, :128], r2 // src + + // Make sure that uninitialized pixels out of range past the right + // edge are in range; their actual values shouldn't matter. + vand q0, q0, q14 + vand q1, q1, q14 +.endif + + bl gather16_neon + + vmovl.u8 q6, d8 // scaling + vmovl.u8 q7, d9 + + vshl.u16 q6, q6, q13 // scaling << (15 - scaling_shift) + vshl.u16 q7, q7, q13 + + vqrdmulh.s16 q8, q8, q6 // round2((scaling << (15 - scaling_shift) * grain, 15) + vqrdmulh.s16 q9, q9, q7 + + + vdup.16 q4, d31[0] // clip_min + vdup.16 q5, d31[1] // clip_max + + vqadd.s16 q0, q2, q8 // *src + noise + vqadd.s16 q1, q3, q9 + +.if \oy + // Swap the two last coefficients of d31, place them first in d28 + vrev64.16 d28, d31 +.endif + + vmax.s16 q0, q0, q4 + vmax.s16 q1, q1, q4 + vmin.s16 q0, q0, q5 + vmin.s16 q1, q1, q5 + + subs r9, r9, #1 +.if \oy + // Take the first two 16 bit coefficients of d28 and place them at the + // end of d31 + vtrn.32 d31, d28 +.endif + + vst1.16 {q0, q1}, [r0, :128], r2 // dst + bgt 1b + +.if \oy + cmp r12, #0 + mov r9, r12 // restore actual remaining h + bgt L(fguv_loop_sx1_csfl\csfl\()_\ox\()0) +.endif + + b 9f +.endm + fguv_loop_sx1 0, 0, 0 + fguv_loop_sx1 0, 0, 1 + fguv_loop_sx1 0, 1, 0 + fguv_loop_sx1 0, 1, 1 + fguv_loop_sx1 1, 0, 0 + fguv_loop_sx1 1, 0, 1 + fguv_loop_sx1 1, 1, 0 + fguv_loop_sx1 1, 1, 1 + +9: + vpop {q4-q7} + pop {r4-r11,pc} +endfunc |