| ; |
| ; Copyright (c) 2010 The VP8 project authors. All Rights Reserved. |
| ; |
| ; Use of this source code is governed by a BSD-style license and patent |
| ; grant that can be found in the LICENSE file in the root of the source |
| ; tree. 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" |
| |
| global sym(vp8_short_fdct4x4_wmt) |
| |
| %define DCTCONSTANTSBITS (16) |
| %define DCTROUNDINGVALUE (1<< (DCTCONSTANTSBITS-1)) |
| %define x_c1 (60547) ; cos(pi /8) * (1<<15) |
| %define x_c2 (46341) ; cos(pi*2/8) * (1<<15) |
| %define x_c3 (25080) ; cos(pi*3/8) * (1<<15) |
| |
| %define _1STSTAGESHIFT 14 |
| %define _2NDSTAGESHIFT 16 |
| |
| |
| ;; using matrix multiply |
| ;void vp8_short_fdct4x4_wmt(short *input, short *output) |
| sym(vp8_short_fdct4x4_wmt): |
| push rbp |
| mov rbp, rsp |
| SHADOW_ARGS_TO_STACK 2 |
| GET_GOT rbx |
| ; end prolog |
| |
| mov rax, arg(0) ;input |
| mov rcx, arg(1) ;output |
| |
| lea rdx, [dct_matrix_sse2 GLOBAL] |
| |
| movdqu xmm0, [rax ] |
| movdqu xmm1, [rax+16] |
| |
| ; first column |
| movdqa xmm2, xmm0 |
| movdqa xmm7, [rdx] |
| |
| pmaddwd xmm2, xmm7 |
| movdqa xmm3, xmm1 |
| |
| pmaddwd xmm3, xmm7 |
| movdqa xmm4, xmm2 |
| |
| punpckldq xmm2, xmm3 |
| punpckhdq xmm4, xmm3 |
| |
| movdqa xmm3, xmm2 |
| punpckldq xmm2, xmm4 |
| |
| punpckhdq xmm3, xmm4 |
| paddd xmm2, xmm3 |
| |
| |
| paddd xmm2, XMMWORD PTR [dct1st_stage_rounding_sse2 GLOBAL] |
| psrad xmm2, _1STSTAGESHIFT |
| ;second column |
| movdqa xmm3, xmm0 |
| pmaddwd xmm3, [rdx+16] |
| |
| movdqa xmm4, xmm1 |
| pmaddwd xmm4, [rdx+16] |
| |
| movdqa xmm5, xmm3 |
| punpckldq xmm3, xmm4 |
| |
| punpckhdq xmm5, xmm4 |
| movdqa xmm4, xmm3 |
| |
| punpckldq xmm3, xmm5 |
| punpckhdq xmm4, xmm5 |
| |
| paddd xmm3, xmm4 |
| paddd xmm3, XMMWORD PTR [dct1st_stage_rounding_sse2 GLOBAL] |
| |
| |
| psrad xmm3, _1STSTAGESHIFT |
| packssdw xmm2, xmm3 |
| |
| ;third column |
| movdqa xmm3, xmm0 |
| pmaddwd xmm3, [rdx+32] |
| |
| movdqa xmm4, xmm1 |
| pmaddwd xmm4, [rdx+32] |
| |
| movdqa xmm5, xmm3 |
| punpckldq xmm3, xmm4 |
| |
| punpckhdq xmm5, xmm4 |
| movdqa xmm4, xmm3 |
| |
| punpckldq xmm3, xmm5 |
| punpckhdq xmm4, xmm5 |
| |
| paddd xmm3, xmm4 |
| paddd xmm3, XMMWORD PTR [dct1st_stage_rounding_sse2 GLOBAL] |
| |
| psrad xmm3, _1STSTAGESHIFT |
| |
| ;fourth column (this is the last column, so we do not have save the source any more) |
| pmaddwd xmm0, [rdx+48] |
| pmaddwd xmm1, [rdx+48] |
| |
| movdqa xmm4, xmm0 |
| punpckldq xmm0, xmm1 |
| |
| punpckhdq xmm4, xmm1 |
| movdqa xmm1, xmm0 |
| |
| punpckldq xmm0, xmm4 |
| punpckhdq xmm1, xmm4 |
| |
| paddd xmm0, xmm1 |
| paddd xmm0, XMMWORD PTR [dct1st_stage_rounding_sse2 GLOBAL] |
| |
| |
| psrad xmm0, _1STSTAGESHIFT |
| packssdw xmm3, xmm0 |
| ; done with one pass |
| ; now start second pass |
| movdqa xmm0, xmm2 |
| movdqa xmm1, xmm3 |
| |
| pmaddwd xmm2, xmm7 |
| pmaddwd xmm3, xmm7 |
| |
| movdqa xmm4, xmm2 |
| punpckldq xmm2, xmm3 |
| |
| punpckhdq xmm4, xmm3 |
| movdqa xmm3, xmm2 |
| |
| punpckldq xmm2, xmm4 |
| punpckhdq xmm3, xmm4 |
| |
| paddd xmm2, xmm3 |
| paddd xmm2, XMMWORD PTR [dct2nd_stage_rounding_sse2 GLOBAL] |
| |
| psrad xmm2, _2NDSTAGESHIFT |
| |
| ;second column |
| movdqa xmm3, xmm0 |
| pmaddwd xmm3, [rdx+16] |
| |
| movdqa xmm4, xmm1 |
| pmaddwd xmm4, [rdx+16] |
| |
| movdqa xmm5, xmm3 |
| punpckldq xmm3, xmm4 |
| |
| punpckhdq xmm5, xmm4 |
| movdqa xmm4, xmm3 |
| |
| punpckldq xmm3, xmm5 |
| punpckhdq xmm4, xmm5 |
| |
| paddd xmm3, xmm4 |
| paddd xmm3, XMMWORD PTR [dct2nd_stage_rounding_sse2 GLOBAL] |
| |
| psrad xmm3, _2NDSTAGESHIFT |
| packssdw xmm2, xmm3 |
| |
| movdqu [rcx], xmm2 |
| ;third column |
| movdqa xmm3, xmm0 |
| pmaddwd xmm3, [rdx+32] |
| |
| movdqa xmm4, xmm1 |
| pmaddwd xmm4, [rdx+32] |
| |
| movdqa xmm5, xmm3 |
| punpckldq xmm3, xmm4 |
| |
| punpckhdq xmm5, xmm4 |
| movdqa xmm4, xmm3 |
| |
| punpckldq xmm3, xmm5 |
| punpckhdq xmm4, xmm5 |
| |
| paddd xmm3, xmm4 |
| paddd xmm3, XMMWORD PTR [dct2nd_stage_rounding_sse2 GLOBAL] |
| |
| psrad xmm3, _2NDSTAGESHIFT |
| ;fourth column |
| pmaddwd xmm0, [rdx+48] |
| pmaddwd xmm1, [rdx+48] |
| |
| movdqa xmm4, xmm0 |
| punpckldq xmm0, xmm1 |
| |
| punpckhdq xmm4, xmm1 |
| movdqa xmm1, xmm0 |
| |
| punpckldq xmm0, xmm4 |
| punpckhdq xmm1, xmm4 |
| |
| paddd xmm0, xmm1 |
| paddd xmm0, XMMWORD PTR [dct2nd_stage_rounding_sse2 GLOBAL] |
| |
| psrad xmm0, _2NDSTAGESHIFT |
| packssdw xmm3, xmm0 |
| |
| movdqu [rcx+16], xmm3 |
| |
| mov rsp, rbp |
| ; begin epilog |
| RESTORE_GOT |
| UNSHADOW_ARGS |
| pop rbp |
| ret |
| |
| |
| SECTION_RODATA |
| ;static unsigned int dct1st_stage_rounding_sse2[4] = |
| align 16 |
| dct1st_stage_rounding_sse2: |
| times 4 dd 8192 |
| |
| |
| ;static unsigned int dct2nd_stage_rounding_sse2[4] = |
| align 16 |
| dct2nd_stage_rounding_sse2: |
| times 4 dd 32768 |
| |
| ;static short dct_matrix_sse2[4][8]= |
| align 16 |
| dct_matrix_sse2: |
| times 8 dw 23170 |
| |
| dw 30274 |
| dw 12540 |
| dw -12540 |
| dw -30274 |
| dw 30274 |
| dw 12540 |
| dw -12540 |
| dw -30274 |
| |
| dw 23170 |
| times 2 dw -23170 |
| times 2 dw 23170 |
| times 2 dw -23170 |
| dw 23170 |
| |
| dw 12540 |
| dw -30274 |
| dw 30274 |
| dw -12540 |
| dw 12540 |
| dw -30274 |
| dw 30274 |
| dw -12540 |
