diff options
Diffstat (limited to 'third_party/aom/av1/encoder/x86/temporal_filter_apply_sse2.asm')
| -rw-r--r-- | third_party/aom/av1/encoder/x86/temporal_filter_apply_sse2.asm | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/third_party/aom/av1/encoder/x86/temporal_filter_apply_sse2.asm b/third_party/aom/av1/encoder/x86/temporal_filter_apply_sse2.asm new file mode 100644 index 000000000..7186b6b92 --- /dev/null +++ b/third_party/aom/av1/encoder/x86/temporal_filter_apply_sse2.asm @@ -0,0 +1,215 @@ +; +; Copyright (c) 2016, Alliance for Open Media. All rights reserved +; +; This source code is subject to the terms of the BSD 2 Clause License and +; the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License +; was not distributed with this source code in the LICENSE file, you can +; obtain it at www.aomedia.org/license/software. If the Alliance for Open +; Media Patent License 1.0 was not distributed with this source code in the +; PATENTS file, you can obtain it at www.aomedia.org/license/patent. +; + +; + + +%include "aom_ports/x86_abi_support.asm" + +; void av1_temporal_filter_apply_sse2 | arg +; (unsigned char *frame1, | 0 +; unsigned int stride, | 1 +; unsigned char *frame2, | 2 +; unsigned int block_width, | 3 +; unsigned int block_height, | 4 +; int strength, | 5 +; int filter_weight, | 6 +; unsigned int *accumulator, | 7 +; unsigned short *count) | 8 +global sym(av1_temporal_filter_apply_sse2) PRIVATE +sym(av1_temporal_filter_apply_sse2): + + push rbp + mov rbp, rsp + SHADOW_ARGS_TO_STACK 9 + SAVE_XMM 7 + GET_GOT rbx + push rsi + push rdi + ALIGN_STACK 16, rax + %define block_width 0 + %define block_height 16 + %define strength 32 + %define filter_weight 48 + %define rounding_bit 64 + %define rbp_backup 80 + %define stack_size 96 + sub rsp, stack_size + mov [rsp + rbp_backup], rbp + ; end prolog + + mov edx, arg(3) + mov [rsp + block_width], rdx + mov edx, arg(4) + mov [rsp + block_height], rdx + movd xmm6, arg(5) + movdqa [rsp + strength], xmm6 ; where strength is used, all 16 bytes are read + + ; calculate the rounding bit outside the loop + ; 0x8000 >> (16 - strength) + mov rdx, 16 + sub rdx, arg(5) ; 16 - strength + movq xmm4, rdx ; can't use rdx w/ shift + movdqa xmm5, [GLOBAL(_const_top_bit)] + psrlw xmm5, xmm4 + movdqa [rsp + rounding_bit], xmm5 + + mov rsi, arg(0) ; src/frame1 + mov rdx, arg(2) ; predictor frame + mov rdi, arg(7) ; accumulator + mov rax, arg(8) ; count + + ; dup the filter weight and store for later + movd xmm0, arg(6) ; filter_weight + pshuflw xmm0, xmm0, 0 + punpcklwd xmm0, xmm0 + movdqa [rsp + filter_weight], xmm0 + + mov rbp, arg(1) ; stride + pxor xmm7, xmm7 ; zero for extraction + + mov rcx, [rsp + block_width] + imul rcx, [rsp + block_height] + add rcx, rdx + cmp dword ptr [rsp + block_width], 8 + jne .temporal_filter_apply_load_16 + +.temporal_filter_apply_load_8: + movq xmm0, [rsi] ; first row + lea rsi, [rsi + rbp] ; += stride + punpcklbw xmm0, xmm7 ; src[ 0- 7] + movq xmm1, [rsi] ; second row + lea rsi, [rsi + rbp] ; += stride + punpcklbw xmm1, xmm7 ; src[ 8-15] + jmp .temporal_filter_apply_load_finished + +.temporal_filter_apply_load_16: + movdqa xmm0, [rsi] ; src (frame1) + lea rsi, [rsi + rbp] ; += stride + movdqa xmm1, xmm0 + punpcklbw xmm0, xmm7 ; src[ 0- 7] + punpckhbw xmm1, xmm7 ; src[ 8-15] + +.temporal_filter_apply_load_finished: + movdqa xmm2, [rdx] ; predictor (frame2) + movdqa xmm3, xmm2 + punpcklbw xmm2, xmm7 ; pred[ 0- 7] + punpckhbw xmm3, xmm7 ; pred[ 8-15] + + ; modifier = src_byte - pixel_value + psubw xmm0, xmm2 ; src - pred[ 0- 7] + psubw xmm1, xmm3 ; src - pred[ 8-15] + + ; modifier *= modifier + pmullw xmm0, xmm0 ; modifer[ 0- 7]^2 + pmullw xmm1, xmm1 ; modifer[ 8-15]^2 + + ; modifier *= 3 + pmullw xmm0, [GLOBAL(_const_3w)] + pmullw xmm1, [GLOBAL(_const_3w)] + + ; modifer += 0x8000 >> (16 - strength) + paddw xmm0, [rsp + rounding_bit] + paddw xmm1, [rsp + rounding_bit] + + ; modifier >>= strength + psrlw xmm0, [rsp + strength] + psrlw xmm1, [rsp + strength] + + ; modifier = 16 - modifier + ; saturation takes care of modifier > 16 + movdqa xmm3, [GLOBAL(_const_16w)] + movdqa xmm2, [GLOBAL(_const_16w)] + psubusw xmm3, xmm1 + psubusw xmm2, xmm0 + + ; modifier *= filter_weight + pmullw xmm2, [rsp + filter_weight] + pmullw xmm3, [rsp + filter_weight] + + ; count + movdqa xmm4, [rax] + movdqa xmm5, [rax+16] + ; += modifier + paddw xmm4, xmm2 + paddw xmm5, xmm3 + ; write back + movdqa [rax], xmm4 + movdqa [rax+16], xmm5 + lea rax, [rax + 16*2] ; count += 16*(sizeof(short)) + + ; load and extract the predictor up to shorts + pxor xmm7, xmm7 + movdqa xmm0, [rdx] + lea rdx, [rdx + 16*1] ; pred += 16*(sizeof(char)) + movdqa xmm1, xmm0 + punpcklbw xmm0, xmm7 ; pred[ 0- 7] + punpckhbw xmm1, xmm7 ; pred[ 8-15] + + ; modifier *= pixel_value + pmullw xmm0, xmm2 + pmullw xmm1, xmm3 + + ; expand to double words + movdqa xmm2, xmm0 + punpcklwd xmm0, xmm7 ; [ 0- 3] + punpckhwd xmm2, xmm7 ; [ 4- 7] + movdqa xmm3, xmm1 + punpcklwd xmm1, xmm7 ; [ 8-11] + punpckhwd xmm3, xmm7 ; [12-15] + + ; accumulator + movdqa xmm4, [rdi] + movdqa xmm5, [rdi+16] + movdqa xmm6, [rdi+32] + movdqa xmm7, [rdi+48] + ; += modifier + paddd xmm4, xmm0 + paddd xmm5, xmm2 + paddd xmm6, xmm1 + paddd xmm7, xmm3 + ; write back + movdqa [rdi], xmm4 + movdqa [rdi+16], xmm5 + movdqa [rdi+32], xmm6 + movdqa [rdi+48], xmm7 + lea rdi, [rdi + 16*4] ; accumulator += 16*(sizeof(int)) + + cmp rdx, rcx + je .temporal_filter_apply_epilog + pxor xmm7, xmm7 ; zero for extraction + cmp dword ptr [rsp + block_width], 16 + je .temporal_filter_apply_load_16 + jmp .temporal_filter_apply_load_8 + +.temporal_filter_apply_epilog: + ; begin epilog + mov rbp, [rsp + rbp_backup] + add rsp, stack_size + pop rsp + pop rdi + pop rsi + RESTORE_GOT + RESTORE_XMM + UNSHADOW_ARGS + pop rbp + ret + +SECTION_RODATA +align 16 +_const_3w: + times 8 dw 3 +align 16 +_const_top_bit: + times 8 dw 1<<15 +align 16 +_const_16w: + times 8 dw 16 |