;***************************************************************************** ;* MMX optimized DSP utils ;***************************************************************************** ;* Copyright (c) 2000, 2001 Fabrice Bellard ;* Copyright (c) 2002-2004 Michael Niedermayer ;* ;* This file is part of Libav. ;* ;* Libav is free software; you can redistribute it and/or ;* modify it under the terms of the GNU Lesser General Public ;* License as published by the Free Software Foundation; either ;* version 2.1 of the License, or (at your option) any later version. ;* ;* Libav is distributed in the hope that it will be useful, ;* but WITHOUT ANY WARRANTY; without even the implied warranty of ;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU ;* Lesser General Public License for more details. ;* ;* You should have received a copy of the GNU Lesser General Public ;* License along with Libav; if not, write to the Free Software ;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA ;***************************************************************************** %include "x86util.asm" SECTION .text %macro DIFF_PIXELS_1 4 movh %1, %3 movh %2, %4 punpcklbw %2, %1 punpcklbw %1, %1 psubw %1, %2 %endmacro ; %1=uint8_t *pix1, %2=uint8_t *pix2, %3=static offset, %4=stride, %5=stride*3 ; %6=temporary storage location ; this macro requires $mmsize stack space (aligned) on %6 (except on SSE+x86-64) %macro DIFF_PIXELS_8 6 DIFF_PIXELS_1 m0, m7, [%1 +%3], [%2 +%3] DIFF_PIXELS_1 m1, m7, [%1+%4 +%3], [%2+%4 +%3] DIFF_PIXELS_1 m2, m7, [%1+%4*2+%3], [%2+%4*2+%3] add %1, %5 add %2, %5 DIFF_PIXELS_1 m3, m7, [%1 +%3], [%2 +%3] DIFF_PIXELS_1 m4, m7, [%1+%4 +%3], [%2+%4 +%3] DIFF_PIXELS_1 m5, m7, [%1+%4*2+%3], [%2+%4*2+%3] DIFF_PIXELS_1 m6, m7, [%1+%5 +%3], [%2+%5 +%3] %ifdef m8 DIFF_PIXELS_1 m7, m8, [%1+%4*4+%3], [%2+%4*4+%3] %else mova [%6], m0 DIFF_PIXELS_1 m7, m0, [%1+%4*4+%3], [%2+%4*4+%3] mova m0, [%6] %endif sub %1, %5 sub %2, %5 %endmacro %macro HADAMARD8 0 SUMSUB_BADC w, 0, 1, 2, 3 SUMSUB_BADC w, 4, 5, 6, 7 SUMSUB_BADC w, 0, 2, 1, 3 SUMSUB_BADC w, 4, 6, 5, 7 SUMSUB_BADC w, 0, 4, 1, 5 SUMSUB_BADC w, 2, 6, 3, 7 %endmacro %macro ABS1_SUM 3 ABS1 %1, %2 paddusw %3, %1 %endmacro %macro ABS2_SUM 6 ABS2 %1, %2, %3, %4 paddusw %5, %1 paddusw %6, %2 %endmacro %macro ABS_SUM_8x8_64 1 ABS2 m0, m1, m8, m9 ABS2_SUM m2, m3, m8, m9, m0, m1 ABS2_SUM m4, m5, m8, m9, m0, m1 ABS2_SUM m6, m7, m8, m9, m0, m1 paddusw m0, m1 %endmacro %macro ABS_SUM_8x8_32 1 mova [%1], m7 ABS1 m0, m7 ABS1 m1, m7 ABS1_SUM m2, m7, m0 ABS1_SUM m3, m7, m1 ABS1_SUM m4, m7, m0 ABS1_SUM m5, m7, m1 ABS1_SUM m6, m7, m0 mova m2, [%1] ABS1_SUM m2, m7, m1 paddusw m0, m1 %endmacro ; FIXME: HSUM_* saturates at 64k, while an 8x8 hadamard or dct block can get up to ; about 100k on extreme inputs. But that's very unlikely to occur in natural video, ; and it's even more unlikely to not have any alternative mvs/modes with lower cost. %macro HSUM_MMX 3 mova %2, %1 psrlq %1, 32 paddusw %1, %2 mova %2, %1 psrlq %1, 16 paddusw %1, %2 movd %3, %1 %endmacro %macro HSUM_MMX2 3 pshufw %2, %1, 0xE paddusw %1, %2 pshufw %2, %1, 0x1 paddusw %1, %2 movd %3, %1 %endmacro %macro HSUM_SSE2 3 movhlps %2, %1 paddusw %1, %2 pshuflw %2, %1, 0xE paddusw %1, %2 pshuflw %2, %1, 0x1 paddusw %1, %2 movd %3, %1 %endmacro %macro STORE4 5 mova [%1+mmsize*0], %2 mova [%1+mmsize*1], %3 mova [%1+mmsize*2], %4 mova [%1+mmsize*3], %5 %endmacro %macro LOAD4 5 mova %2, [%1+mmsize*0] mova %3, [%1+mmsize*1] mova %4, [%1+mmsize*2] mova %5, [%1+mmsize*3] %endmacro %macro hadamard8_16_wrapper 3 cglobal hadamard8_diff_%1, 4, 4, %2 %ifndef m8 %assign pad %3*mmsize-(4+stack_offset&(mmsize-1)) SUB rsp, pad %endif call hadamard8x8_diff_%1 %ifndef m8 ADD rsp, pad %endif RET cglobal hadamard8_diff16_%1, 5, 6, %2 %ifndef m8 %assign pad %3*mmsize-(4+stack_offset&(mmsize-1)) SUB rsp, pad %endif call hadamard8x8_diff_%1 mov r5d, eax add r1, 8 add r2, 8 call hadamard8x8_diff_%1 add r5d, eax cmp r4d, 16 jne .done lea r1, [r1+r3*8-8] lea r2, [r2+r3*8-8] call hadamard8x8_diff_%1 add r5d, eax add r1, 8 add r2, 8 call hadamard8x8_diff_%1 add r5d, eax .done: mov eax, r5d %ifndef m8 ADD rsp, pad %endif RET %endmacro %macro HADAMARD8_DIFF_MMX 1 ALIGN 16 ; int hadamard8_diff_##cpu(void *s, uint8_t *src1, uint8_t *src2, ; int stride, int h) ; r0 = void *s = unused, int h = unused (always 8) ; note how r1, r2 and r3 are not clobbered in this function, so 16x16 ; can simply call this 2x2x (and that's why we access rsp+gprsize ; everywhere, which is rsp of calling func hadamard8x8_diff_%1: lea r0, [r3*3] ; first 4x8 pixels DIFF_PIXELS_8 r1, r2, 0, r3, r0, rsp+gprsize+0x60 HADAMARD8 mova [rsp+gprsize+0x60], m7 TRANSPOSE4x4W 0, 1, 2, 3, 7 STORE4 rsp+gprsize, m0, m1, m2, m3 mova m7, [rsp+gprsize+0x60] TRANSPOSE4x4W 4, 5, 6, 7, 0 STORE4 rsp+gprsize+0x40, m4, m5, m6, m7 ; second 4x8 pixels DIFF_PIXELS_8 r1, r2, 4, r3, r0, rsp+gprsize+0x60 HADAMARD8 mova [rsp+gprsize+0x60], m7 TRANSPOSE4x4W 0, 1, 2, 3, 7 STORE4 rsp+gprsize+0x20, m0, m1, m2, m3 mova m7, [rsp+gprsize+0x60] TRANSPOSE4x4W 4, 5, 6, 7, 0 LOAD4 rsp+gprsize+0x40, m0, m1, m2, m3 HADAMARD8 ABS_SUM_8x8_32 rsp+gprsize+0x60 mova [rsp+gprsize+0x60], m0 LOAD4 rsp+gprsize , m0, m1, m2, m3 LOAD4 rsp+gprsize+0x20, m4, m5, m6, m7 HADAMARD8 ABS_SUM_8x8_32 rsp+gprsize paddusw m0, [rsp+gprsize+0x60] HSUM m0, m1, eax and rax, 0xFFFF ret hadamard8_16_wrapper %1, 0, 14 %endmacro %macro HADAMARD8_DIFF_SSE2 2 hadamard8x8_diff_%1: lea r0, [r3*3] DIFF_PIXELS_8 r1, r2, 0, r3, r0, rsp+gprsize HADAMARD8 %if ARCH_X86_64 TRANSPOSE8x8W 0, 1, 2, 3, 4, 5, 6, 7, 8 %else TRANSPOSE8x8W 0, 1, 2, 3, 4, 5, 6, 7, [rsp+gprsize], [rsp+mmsize+gprsize] %endif HADAMARD8 ABS_SUM_8x8 rsp+gprsize HSUM_SSE2 m0, m1, eax and eax, 0xFFFF ret hadamard8_16_wrapper %1, %2, 3 %endmacro INIT_MMX %define ABS1 ABS1_MMX %define HSUM HSUM_MMX HADAMARD8_DIFF_MMX mmx %define ABS1 ABS1_MMX2 %define HSUM HSUM_MMX2 HADAMARD8_DIFF_MMX mmx2 INIT_XMM %define ABS2 ABS2_MMX2 %if ARCH_X86_64 %define ABS_SUM_8x8 ABS_SUM_8x8_64 %else %define ABS_SUM_8x8 ABS_SUM_8x8_32 %endif HADAMARD8_DIFF_SSE2 sse2, 10 %define ABS2 ABS2_SSSE3 %define ABS_SUM_8x8 ABS_SUM_8x8_64 HADAMARD8_DIFF_SSE2 ssse3, 9 INIT_XMM ; sse16_sse2(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h) cglobal sse16_sse2, 5, 5, 8 shr r4d, 1 pxor m0, m0 ; mm0 = 0 pxor m7, m7 ; mm7 holds the sum .next2lines: ; FIXME why are these unaligned movs? pix1[] is aligned movu m1, [r1 ] ; mm1 = pix1[0][0-15] movu m2, [r2 ] ; mm2 = pix2[0][0-15] movu m3, [r1+r3] ; mm3 = pix1[1][0-15] movu m4, [r2+r3] ; mm4 = pix2[1][0-15] ; todo: mm1-mm2, mm3-mm4 ; algo: subtract mm1 from mm2 with saturation and vice versa ; OR the result to get the absolute difference mova m5, m1 mova m6, m3 psubusb m1, m2 psubusb m3, m4 psubusb m2, m5 psubusb m4, m6 por m2, m1 por m4, m3 ; now convert to 16-bit vectors so we can square them mova m1, m2 mova m3, m4 punpckhbw m2, m0 punpckhbw m4, m0 punpcklbw m1, m0 ; mm1 not spread over (mm1,mm2) punpcklbw m3, m0 ; mm4 not spread over (mm3,mm4) pmaddwd m2, m2 pmaddwd m4, m4 pmaddwd m1, m1 pmaddwd m3, m3 lea r1, [r1+r3*2] ; pix1 += 2*line_size lea r2, [r2+r3*2] ; pix2 += 2*line_size paddd m1, m2 paddd m3, m4 paddd m7, m1 paddd m7, m3 dec r4 jnz .next2lines mova m1, m7 psrldq m7, 8 ; shift hi qword to lo paddd m7, m1 mova m1, m7 psrldq m7, 4 ; shift hi dword to lo paddd m7, m1 movd eax, m7 ; return value RET