2010-09-17 04:44:17 +03:00
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;*****************************************************************************
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;* MMX optimized DSP utils
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;*****************************************************************************
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;* Copyright (c) 2000, 2001 Fabrice Bellard
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;* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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;*
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2011-03-18 19:35:10 +02:00
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;* This file is part of Libav.
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2010-09-17 04:44:17 +03:00
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;*
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2011-03-18 19:35:10 +02:00
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;* Libav is free software; you can redistribute it and/or
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2010-09-17 04:44:17 +03:00
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;* modify it under the terms of the GNU Lesser General Public
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;* License as published by the Free Software Foundation; either
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;* version 2.1 of the License, or (at your option) any later version.
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;*
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2011-03-18 19:35:10 +02:00
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;* Libav is distributed in the hope that it will be useful,
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2010-09-17 04:44:17 +03:00
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;* but WITHOUT ANY WARRANTY; without even the implied warranty of
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;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;* Lesser General Public License for more details.
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;*
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;* You should have received a copy of the GNU Lesser General Public
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2011-03-18 19:35:10 +02:00
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;* License along with Libav; if not, write to the Free Software
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2011-05-14 22:32:31 +03:00
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;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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2010-09-17 04:44:17 +03:00
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;*****************************************************************************
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2011-07-24 04:36:35 +03:00
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%include "libavutil/x86/x86inc.asm"
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2010-09-17 04:44:17 +03:00
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%include "x86util.asm"
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SECTION .text
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2010-09-17 04:56:06 +03:00
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%macro DIFF_PIXELS_1 4
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movh %1, %3
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movh %2, %4
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punpcklbw %2, %1
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punpcklbw %1, %1
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psubw %1, %2
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%endmacro
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; %1=uint8_t *pix1, %2=uint8_t *pix2, %3=static offset, %4=stride, %5=stride*3
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; %6=temporary storage location
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; this macro requires $mmsize stack space (aligned) on %6 (except on SSE+x86-64)
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%macro DIFF_PIXELS_8 6
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DIFF_PIXELS_1 m0, m7, [%1 +%3], [%2 +%3]
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DIFF_PIXELS_1 m1, m7, [%1+%4 +%3], [%2+%4 +%3]
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DIFF_PIXELS_1 m2, m7, [%1+%4*2+%3], [%2+%4*2+%3]
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add %1, %5
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add %2, %5
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DIFF_PIXELS_1 m3, m7, [%1 +%3], [%2 +%3]
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DIFF_PIXELS_1 m4, m7, [%1+%4 +%3], [%2+%4 +%3]
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DIFF_PIXELS_1 m5, m7, [%1+%4*2+%3], [%2+%4*2+%3]
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DIFF_PIXELS_1 m6, m7, [%1+%5 +%3], [%2+%5 +%3]
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%ifdef m8
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DIFF_PIXELS_1 m7, m8, [%1+%4*4+%3], [%2+%4*4+%3]
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%else
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mova [%6], m0
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DIFF_PIXELS_1 m7, m0, [%1+%4*4+%3], [%2+%4*4+%3]
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mova m0, [%6]
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%endif
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sub %1, %5
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sub %2, %5
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%endmacro
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%macro HADAMARD8 0
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2011-05-17 00:18:22 +03:00
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SUMSUB_BADC w, 0, 1, 2, 3
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SUMSUB_BADC w, 4, 5, 6, 7
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SUMSUB_BADC w, 0, 2, 1, 3
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SUMSUB_BADC w, 4, 6, 5, 7
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SUMSUB_BADC w, 0, 4, 1, 5
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SUMSUB_BADC w, 2, 6, 3, 7
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2010-09-17 04:56:06 +03:00
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%endmacro
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%macro ABS1_SUM 3
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ABS1 %1, %2
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paddusw %3, %1
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%endmacro
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%macro ABS2_SUM 6
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ABS2 %1, %2, %3, %4
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paddusw %5, %1
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paddusw %6, %2
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%endmacro
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%macro ABS_SUM_8x8_64 1
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ABS2 m0, m1, m8, m9
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ABS2_SUM m2, m3, m8, m9, m0, m1
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ABS2_SUM m4, m5, m8, m9, m0, m1
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ABS2_SUM m6, m7, m8, m9, m0, m1
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paddusw m0, m1
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%endmacro
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%macro ABS_SUM_8x8_32 1
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mova [%1], m7
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ABS1 m0, m7
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ABS1 m1, m7
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ABS1_SUM m2, m7, m0
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ABS1_SUM m3, m7, m1
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ABS1_SUM m4, m7, m0
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ABS1_SUM m5, m7, m1
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ABS1_SUM m6, m7, m0
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mova m2, [%1]
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ABS1_SUM m2, m7, m1
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paddusw m0, m1
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%endmacro
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; FIXME: HSUM_* saturates at 64k, while an 8x8 hadamard or dct block can get up to
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; about 100k on extreme inputs. But that's very unlikely to occur in natural video,
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; and it's even more unlikely to not have any alternative mvs/modes with lower cost.
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%macro HSUM_MMX 3
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mova %2, %1
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psrlq %1, 32
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paddusw %1, %2
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mova %2, %1
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psrlq %1, 16
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paddusw %1, %2
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movd %3, %1
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%endmacro
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%macro HSUM_MMX2 3
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pshufw %2, %1, 0xE
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paddusw %1, %2
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pshufw %2, %1, 0x1
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paddusw %1, %2
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movd %3, %1
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%endmacro
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%macro HSUM_SSE2 3
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movhlps %2, %1
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paddusw %1, %2
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pshuflw %2, %1, 0xE
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paddusw %1, %2
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pshuflw %2, %1, 0x1
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paddusw %1, %2
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movd %3, %1
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%endmacro
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%macro STORE4 5
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mova [%1+mmsize*0], %2
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mova [%1+mmsize*1], %3
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mova [%1+mmsize*2], %4
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mova [%1+mmsize*3], %5
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%endmacro
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%macro LOAD4 5
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mova %2, [%1+mmsize*0]
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mova %3, [%1+mmsize*1]
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mova %4, [%1+mmsize*2]
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mova %5, [%1+mmsize*3]
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%endmacro
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%macro hadamard8_16_wrapper 3
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cglobal hadamard8_diff_%1, 4, 4, %2
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%ifndef m8
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%assign pad %3*mmsize-(4+stack_offset&(mmsize-1))
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SUB rsp, pad
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%endif
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call hadamard8x8_diff_%1
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%ifndef m8
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ADD rsp, pad
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%endif
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RET
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cglobal hadamard8_diff16_%1, 5, 6, %2
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%ifndef m8
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%assign pad %3*mmsize-(4+stack_offset&(mmsize-1))
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SUB rsp, pad
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%endif
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call hadamard8x8_diff_%1
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mov r5d, eax
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add r1, 8
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add r2, 8
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call hadamard8x8_diff_%1
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add r5d, eax
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cmp r4d, 16
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jne .done
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lea r1, [r1+r3*8-8]
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lea r2, [r2+r3*8-8]
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call hadamard8x8_diff_%1
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add r5d, eax
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add r1, 8
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add r2, 8
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call hadamard8x8_diff_%1
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add r5d, eax
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.done
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mov eax, r5d
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%ifndef m8
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ADD rsp, pad
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%endif
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RET
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%endmacro
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%macro HADAMARD8_DIFF_MMX 1
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ALIGN 16
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; int hadamard8_diff_##cpu(void *s, uint8_t *src1, uint8_t *src2,
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; int stride, int h)
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; r0 = void *s = unused, int h = unused (always 8)
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; note how r1, r2 and r3 are not clobbered in this function, so 16x16
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; can simply call this 2x2x (and that's why we access rsp+gprsize
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; everywhere, which is rsp of calling func
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hadamard8x8_diff_%1:
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lea r0, [r3*3]
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; first 4x8 pixels
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DIFF_PIXELS_8 r1, r2, 0, r3, r0, rsp+gprsize+0x60
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HADAMARD8
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mova [rsp+gprsize+0x60], m7
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TRANSPOSE4x4W 0, 1, 2, 3, 7
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STORE4 rsp+gprsize, m0, m1, m2, m3
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mova m7, [rsp+gprsize+0x60]
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TRANSPOSE4x4W 4, 5, 6, 7, 0
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STORE4 rsp+gprsize+0x40, m4, m5, m6, m7
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; second 4x8 pixels
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DIFF_PIXELS_8 r1, r2, 4, r3, r0, rsp+gprsize+0x60
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HADAMARD8
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mova [rsp+gprsize+0x60], m7
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TRANSPOSE4x4W 0, 1, 2, 3, 7
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STORE4 rsp+gprsize+0x20, m0, m1, m2, m3
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mova m7, [rsp+gprsize+0x60]
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TRANSPOSE4x4W 4, 5, 6, 7, 0
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LOAD4 rsp+gprsize+0x40, m0, m1, m2, m3
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HADAMARD8
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ABS_SUM_8x8_32 rsp+gprsize+0x60
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mova [rsp+gprsize+0x60], m0
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LOAD4 rsp+gprsize , m0, m1, m2, m3
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LOAD4 rsp+gprsize+0x20, m4, m5, m6, m7
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HADAMARD8
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ABS_SUM_8x8_32 rsp+gprsize
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paddusw m0, [rsp+gprsize+0x60]
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HSUM m0, m1, eax
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and rax, 0xFFFF
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ret
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hadamard8_16_wrapper %1, 0, 14
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%endmacro
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%macro HADAMARD8_DIFF_SSE2 2
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hadamard8x8_diff_%1:
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lea r0, [r3*3]
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DIFF_PIXELS_8 r1, r2, 0, r3, r0, rsp+gprsize
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HADAMARD8
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%ifdef ARCH_X86_64
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TRANSPOSE8x8W 0, 1, 2, 3, 4, 5, 6, 7, 8
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%else
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TRANSPOSE8x8W 0, 1, 2, 3, 4, 5, 6, 7, [rsp+gprsize], [rsp+mmsize+gprsize]
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%endif
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HADAMARD8
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ABS_SUM_8x8 rsp+gprsize
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HSUM_SSE2 m0, m1, eax
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and eax, 0xFFFF
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ret
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hadamard8_16_wrapper %1, %2, 3
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%endmacro
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INIT_MMX
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%define ABS1 ABS1_MMX
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%define HSUM HSUM_MMX
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HADAMARD8_DIFF_MMX mmx
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%define ABS1 ABS1_MMX2
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%define HSUM HSUM_MMX2
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HADAMARD8_DIFF_MMX mmx2
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INIT_XMM
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%define ABS2 ABS2_MMX2
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%ifdef ARCH_X86_64
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%define ABS_SUM_8x8 ABS_SUM_8x8_64
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%else
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%define ABS_SUM_8x8 ABS_SUM_8x8_32
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%endif
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HADAMARD8_DIFF_SSE2 sse2, 10
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%define ABS2 ABS2_SSSE3
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%define ABS_SUM_8x8 ABS_SUM_8x8_64
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HADAMARD8_DIFF_SSE2 ssse3, 9
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2010-09-17 04:44:17 +03:00
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INIT_XMM
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; sse16_sse2(void *v, uint8_t * pix1, uint8_t * pix2, int line_size, int h)
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cglobal sse16_sse2, 5, 5, 8
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2010-09-17 15:24:22 +03:00
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shr r4d, 1
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2010-09-17 04:44:17 +03:00
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pxor m0, m0 ; mm0 = 0
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pxor m7, m7 ; mm7 holds the sum
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.next2lines ; FIXME why are these unaligned movs? pix1[] is aligned
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movu m1, [r1 ] ; mm1 = pix1[0][0-15]
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movu m2, [r2 ] ; mm2 = pix2[0][0-15]
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movu m3, [r1+r3] ; mm3 = pix1[1][0-15]
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movu m4, [r2+r3] ; mm4 = pix2[1][0-15]
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; todo: mm1-mm2, mm3-mm4
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; algo: subtract mm1 from mm2 with saturation and vice versa
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; OR the result to get the absolute difference
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mova m5, m1
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mova m6, m3
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psubusb m1, m2
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psubusb m3, m4
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psubusb m2, m5
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psubusb m4, m6
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por m2, m1
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por m4, m3
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; now convert to 16-bit vectors so we can square them
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mova m1, m2
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mova m3, m4
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punpckhbw m2, m0
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punpckhbw m4, m0
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punpcklbw m1, m0 ; mm1 not spread over (mm1,mm2)
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punpcklbw m3, m0 ; mm4 not spread over (mm3,mm4)
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pmaddwd m2, m2
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pmaddwd m4, m4
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pmaddwd m1, m1
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pmaddwd m3, m3
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lea r1, [r1+r3*2] ; pix1 += 2*line_size
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lea r2, [r2+r3*2] ; pix2 += 2*line_size
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paddd m1, m2
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paddd m3, m4
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paddd m7, m1
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paddd m7, m3
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dec r4
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jnz .next2lines
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mova m1, m7
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psrldq m7, 8 ; shift hi qword to lo
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paddd m7, m1
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mova m1, m7
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psrldq m7, 4 ; shift hi dword to lo
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paddd m7, m1
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movd eax, m7 ; return value
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RET
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