diff options
Diffstat (limited to 'libvpx/vp8/encoder/x86/subtract_sse2.asm')
| -rw-r--r-- | libvpx/vp8/encoder/x86/subtract_sse2.asm | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/libvpx/vp8/encoder/x86/subtract_sse2.asm b/libvpx/vp8/encoder/x86/subtract_sse2.asm new file mode 100644 index 0000000..a5d17f5 --- /dev/null +++ b/libvpx/vp8/encoder/x86/subtract_sse2.asm @@ -0,0 +1,245 @@ +; +; 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" + +;void vp8_subtract_b_sse2_impl(unsigned char *z, int src_stride, +; short *diff, unsigned char *Predictor, +; int pitch); +global sym(vp8_subtract_b_sse2_impl) PRIVATE +sym(vp8_subtract_b_sse2_impl): + push rbp + mov rbp, rsp + SHADOW_ARGS_TO_STACK 5 + GET_GOT rbx + push rsi + push rdi + ; end prolog + + mov rdi, arg(2) ;diff + mov rax, arg(3) ;Predictor + mov rsi, arg(0) ;z + movsxd rdx, dword ptr arg(1);src_stride; + movsxd rcx, dword ptr arg(4);pitch + pxor mm7, mm7 + + movd mm0, [rsi] + movd mm1, [rax] + punpcklbw mm0, mm7 + punpcklbw mm1, mm7 + psubw mm0, mm1 + movq MMWORD PTR [rdi], mm0 + + movd mm0, [rsi+rdx] + movd mm1, [rax+rcx] + punpcklbw mm0, mm7 + punpcklbw mm1, mm7 + psubw mm0, mm1 + movq MMWORD PTR [rdi+rcx*2], mm0 + + movd mm0, [rsi+rdx*2] + movd mm1, [rax+rcx*2] + punpcklbw mm0, mm7 + punpcklbw mm1, mm7 + psubw mm0, mm1 + movq MMWORD PTR [rdi+rcx*4], mm0 + + lea rsi, [rsi+rdx*2] + lea rcx, [rcx+rcx*2] + + movd mm0, [rsi+rdx] + movd mm1, [rax+rcx] + punpcklbw mm0, mm7 + punpcklbw mm1, mm7 + psubw mm0, mm1 + movq MMWORD PTR [rdi+rcx*2], mm0 + + ; begin epilog + pop rdi + pop rsi + RESTORE_GOT + UNSHADOW_ARGS + pop rbp + ret + + +;void vp8_subtract_mby_sse2(short *diff, unsigned char *src, int src_stride, +;unsigned char *pred, int pred_stride) +global sym(vp8_subtract_mby_sse2) PRIVATE +sym(vp8_subtract_mby_sse2): + push rbp + mov rbp, rsp + SHADOW_ARGS_TO_STACK 5 + GET_GOT rbx + push rsi + push rdi + ; end prolog + + mov rdi, arg(0) ;diff + mov rsi, arg(1) ;src + movsxd rdx, dword ptr arg(2);src_stride + mov rax, arg(3) ;pred + movdqa xmm4, [GLOBAL(t80)] + push rbx + mov rcx, 8 ; do two lines at one time + movsxd rbx, dword ptr arg(4);pred_stride + +.submby_loop: + movdqa xmm0, [rsi] ; src + movdqa xmm1, [rax] ; pred + + movdqa xmm2, xmm0 + psubb xmm0, xmm1 + + pxor xmm1, xmm4 ;convert to signed values + pxor xmm2, xmm4 + pcmpgtb xmm1, xmm2 ; obtain sign information + + movdqa xmm2, xmm0 + punpcklbw xmm0, xmm1 ; put sign back to subtraction + punpckhbw xmm2, xmm1 ; put sign back to subtraction + + movdqa xmm3, [rsi + rdx] + movdqa xmm5, [rax + rbx] + + lea rsi, [rsi+rdx*2] + lea rax, [rax+rbx*2] + + movdqa [rdi], xmm0 + movdqa [rdi +16], xmm2 + + movdqa xmm1, xmm3 + psubb xmm3, xmm5 + + pxor xmm5, xmm4 ;convert to signed values + pxor xmm1, xmm4 + pcmpgtb xmm5, xmm1 ; obtain sign information + + movdqa xmm1, xmm3 + punpcklbw xmm3, xmm5 ; put sign back to subtraction + punpckhbw xmm1, xmm5 ; put sign back to subtraction + + movdqa [rdi +32], xmm3 + movdqa [rdi +48], xmm1 + + add rdi, 64 + dec rcx + jnz .submby_loop + + pop rbx + pop rdi + pop rsi + ; begin epilog + RESTORE_GOT + UNSHADOW_ARGS + pop rbp + ret + +;vp8_subtract_mbuv_sse2(short *diff, unsigned char *usrc, unsigned char *vsrc, +; int src_stride, unsigned char *upred, +; unsigned char *vpred, int pred_stride) +global sym(vp8_subtract_mbuv_sse2) PRIVATE +sym(vp8_subtract_mbuv_sse2): + push rbp + mov rbp, rsp + SHADOW_ARGS_TO_STACK 7 + GET_GOT rbx + push rsi + push rdi + ; end prolog + + movdqa xmm4, [GLOBAL(t80)] + mov rdi, arg(0) ;diff + mov rsi, arg(1) ;usrc + movsxd rdx, dword ptr arg(3);src_stride; + mov rax, arg(4) ;upred + add rdi, 256*2 ;diff = diff + 256 (shorts) + mov rcx, 4 + push rbx + movsxd rbx, dword ptr arg(6);pred_stride + + ;u +.submbu_loop: + movq xmm0, [rsi] ; src + movq xmm2, [rsi+rdx] ; src -- next line + movq xmm1, [rax] ; pred + movq xmm3, [rax+rbx] ; pred -- next line + lea rsi, [rsi + rdx*2] + lea rax, [rax + rbx*2] + + punpcklqdq xmm0, xmm2 + punpcklqdq xmm1, xmm3 + + movdqa xmm2, xmm0 + psubb xmm0, xmm1 ; subtraction with sign missed + + pxor xmm1, xmm4 ;convert to signed values + pxor xmm2, xmm4 + pcmpgtb xmm1, xmm2 ; obtain sign information + + movdqa xmm2, xmm0 + movdqa xmm3, xmm1 + punpcklbw xmm0, xmm1 ; put sign back to subtraction + punpckhbw xmm2, xmm3 ; put sign back to subtraction + + movdqa [rdi], xmm0 ; store difference + movdqa [rdi +16], xmm2 ; store difference + add rdi, 32 + sub rcx, 1 + jnz .submbu_loop + + mov rsi, arg(2) ;vsrc + mov rax, arg(5) ;vpred + mov rcx, 4 + + ;v +.submbv_loop: + movq xmm0, [rsi] ; src + movq xmm2, [rsi+rdx] ; src -- next line + movq xmm1, [rax] ; pred + movq xmm3, [rax+rbx] ; pred -- next line + lea rsi, [rsi + rdx*2] + lea rax, [rax + rbx*2] + + punpcklqdq xmm0, xmm2 + punpcklqdq xmm1, xmm3 + + movdqa xmm2, xmm0 + psubb xmm0, xmm1 ; subtraction with sign missed + + pxor xmm1, xmm4 ;convert to signed values + pxor xmm2, xmm4 + pcmpgtb xmm1, xmm2 ; obtain sign information + + movdqa xmm2, xmm0 + movdqa xmm3, xmm1 + punpcklbw xmm0, xmm1 ; put sign back to subtraction + punpckhbw xmm2, xmm3 ; put sign back to subtraction + + movdqa [rdi], xmm0 ; store difference + movdqa [rdi +16], xmm2 ; store difference + add rdi, 32 + sub rcx, 1 + jnz .submbv_loop + + pop rbx + ; begin epilog + pop rdi + pop rsi + RESTORE_GOT + UNSHADOW_ARGS + pop rbp + ret + +SECTION_RODATA +align 16 +t80: + times 16 db 0x80 |