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;******************************************************************************
;* TTA DSP SIMD optimizations
;*
;* Copyright (C) 2014 James Almer
;*
;* This file is part of FFmpeg.
;*
;* FFmpeg 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.
;*
;* FFmpeg 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 FFmpeg; if not, write to the Free Software
;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;******************************************************************************
%include "libavutil/x86/x86util.asm"
SECTION_RODATA
pd_n0113: dd ~0, ~1, ~1, ~3
pd_1224: dd 1, 2, 2, 4
SECTION .text
%macro TTA_FILTER 2
INIT_XMM %1
cglobal ttafilter_process_dec, 5,5,%2, qm, dx, dl, error, in, shift, round
mova m2, [qmq ]
mova m3, [qmq + 0x10]
mova m4, [dxq ]
mova m5, [dxq + 0x10]
movd m6, [errorq] ; if (filter->error < 0) {
SPLATD m6 ; for (int i = 0; i < 8; i++)
psignd m0, m4, m6 ; filter->qm[i] -= filter->dx[i];
psignd m1, m5, m6 ; } else if (filter->error > 0) {
paddd m2, m0 ; for (int i = 0; i < 8; i++)
paddd m3, m1 ; filter->qm[i] += filter->dx[i];
mova [qmq ], m2 ; }
mova [qmq + 0x10], m3 ;
mova m0, [dlq ]
mova m1, [dlq + 0x10]
%if cpuflag(sse4)
pmulld m2, m0
pmulld m3, m1
%else
pshufd m6, m0, 0xb1
pshufd m7, m2, 0xb1
pmuludq m6, m7
pshufd m6, m6, 0xd8
pmuludq m2, m0
pshufd m2, m2, 0xd8
punpckldq m2, m6
pshufd m6, m1, 0xb1
pshufd m7, m3, 0xb1
pmuludq m6, m7
pshufd m6, m6, 0xd8
pmuludq m3, m1
pshufd m3, m3, 0xd8
punpckldq m3, m6
%endif
; Using horizontal add (phaddd) seems to be slower than shuffling stuff around
paddd m2, m3 ; int sum = filter->round +
; filter->dl[0] * filter->qm[0] +
punpckhqdq m3, m2, m2 ; filter->dl[1] * filter->qm[1] +
paddd m2, m3 ; filter->dl[2] * filter->qm[2] +
; filter->dl[3] * filter->qm[3] +
movd m6, roundm ; filter->dl[4] * filter->qm[4] +
paddd m6, m2 ; filter->dl[5] * filter->qm[5] +
pshufd m2, m2, 0x1 ; filter->dl[6] * filter->qm[6] +
paddd m6, m2 ; filter->dl[7] * filter->qm[7];
palignr m5, m4, 4 ; filter->dx[0] = filter->dx[1]; filter->dx[1] = filter->dx[2];
; filter->dx[2] = filter->dx[3]; filter->dx[3] = filter->dx[4];
palignr m2, m1, m0, 4 ; filter->dl[0] = filter->dl[1]; filter->dl[1] = filter->dl[2];
; filter->dl[2] = filter->dl[3]; filter->dl[3] = filter->dl[4];
psrad m4, m1, 30 ; filter->dx[4] = ((filter->dl[4] >> 30) | 1);
por m4, [pd_1224 ] ; filter->dx[5] = ((filter->dl[5] >> 30) | 2) & ~1;
pand m4, [pd_n0113] ; filter->dx[6] = ((filter->dl[6] >> 30) | 2) & ~1;
; filter->dx[7] = ((filter->dl[7] >> 30) | 4) & ~3;
mova [dlq ], m2
mova [dxq ], m5
mova [dxq + 0x10], m4
movd m0, [inq] ; filter->error = *in;
movd [errorq], m0 ;
movd m2, shiftm ; *in += (sum >> filter->shift);
psrad m6, m2 ;
paddd m0, m6 ;
movd [inq], m0 ;
psrldq m1, 4 ;
pslldq m0, 12 ; filter->dl[4] = -filter->dl[5];
pshufd m0, m0, 0xf0 ; filter->dl[5] = -filter->dl[6];
psubd m0, m1 ; filter->dl[6] = *in - filter->dl[7];
psrldq m1, m0, 4 ; filter->dl[7] = *in;
pshufd m1, m1, 0xf4 ; filter->dl[5] += filter->dl[6];
paddd m0, m1 ; filter->dl[4] += filter->dl[5];
psrldq m1, 4 ;
paddd m0, m1 ;
mova [dlq + 0x10], m0 ;
RET
%endmacro
TTA_FILTER ssse3, 8
TTA_FILTER sse4, 7
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