diff options
Diffstat (limited to 'media/libvpx/libvpx/vp8/encoder/x86/temporal_filter_apply_sse2.asm')
| -rw-r--r-- | media/libvpx/libvpx/vp8/encoder/x86/temporal_filter_apply_sse2.asm | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp8/encoder/x86/temporal_filter_apply_sse2.asm b/media/libvpx/libvpx/vp8/encoder/x86/temporal_filter_apply_sse2.asm new file mode 100644 index 0000000000..67102064a1 --- /dev/null +++ b/media/libvpx/libvpx/vp8/encoder/x86/temporal_filter_apply_sse2.asm @@ -0,0 +1,209 @@ +; +; Copyright (c) 2010 The WebM project authors. All Rights Reserved. +; +; Use of this source code is governed by a BSD-style license +; that can be found in the LICENSE file in the root of the source +; tree. An additional intellectual property rights grant can be found +; in the file PATENTS. All contributing project authors may +; be found in the AUTHORS file in the root of the source tree. +; + + +%include "vpx_ports/x86_abi_support.asm" + +SECTION .text + +; void vp8_temporal_filter_apply_sse2 | arg +; (unsigned char *frame1, | 0 +; unsigned int stride, | 1 +; unsigned char *frame2, | 2 +; unsigned int block_size, | 3 +; int strength, | 4 +; int filter_weight, | 5 +; unsigned int *accumulator, | 6 +; unsigned short *count) | 7 +globalsym(vp8_temporal_filter_apply_sse2) +sym(vp8_temporal_filter_apply_sse2): + + push rbp + mov rbp, rsp + SHADOW_ARGS_TO_STACK 8 + SAVE_XMM 7 + GET_GOT rbx + push rsi + push rdi + ALIGN_STACK 16, rax + %define block_size 0 + %define strength 16 + %define filter_weight 32 + %define rounding_bit 48 + %define rbp_backup 64 + %define stack_size 80 + sub rsp, stack_size + mov [rsp + rbp_backup], rbp + ; end prolog + + mov rdx, arg(3) + mov [rsp + block_size], rdx + movd xmm6, arg(4) + 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(4) ; 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(6) ; accumulator + mov rax, arg(7) ; count + + ; dup the filter weight and store for later + movd xmm0, arg(5) ; 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 + + lea rcx, [rdx + 16*16*1] + cmp dword ptr [rsp + block_size], 8 + jne .temporal_filter_apply_load_16 + lea rcx, [rdx + 8*8*1] + +.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_size], 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 |