| ;***************************************************************************** | |
| ;* x86-optimized functions for idet filter | |
| ;* | |
| ;* Copyright (C) 2014 Pascal Massimino ([email protected]) | |
| ;* Copyright (c) 2014 Neil Birkbeck ([email protected]) | |
| ;* | |
| ;* 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 .text | |
| ;****************************************************************************** | |
| ; 16bit implementation that does 4/8-pixels at a time | |
| %macro PABS_DIFF_WD 3 ; a, b, junk , output=a | |
| psubusw %3, %2, %1 | |
| psubusw %1, %2 | |
| por %1, %3 | |
| mova %2, %1 | |
| punpcklwd %1, m_zero | |
| punpckhwd %2, m_zero | |
| paddd %1, %2 | |
| %endmacro | |
| %macro IDET_FILTER_LINE_16BIT 1 ; %1=increment (4 or 8 words) | |
| cglobal idet_filter_line_16bit, 4, 5, 8, a, b, c, width, index | |
| xor indexq, indexq | |
| %define m_zero m1 | |
| %define m_sum m0 | |
| pxor m_sum, m_sum | |
| pxor m_zero, m_zero | |
| .loop_16bit: | |
| movu m2, [bq + indexq * 2] ; B | |
| movu m3, [aq + indexq * 2] ; A | |
| mova m6, m2 | |
| psubusw m5, m2, m3 ; ba | |
| movu m4, [cq + indexq * 2] ; C | |
| add indexq, %1 | |
| psubusw m3, m2 ; ab | |
| CMP indexd, widthd | |
| psubusw m6, m4 ; bc | |
| psubusw m4, m2 ; cb | |
| PABS_DIFF_WD m3, m6, m7 ; |ab - bc| | |
| PABS_DIFF_WD m5, m4, m7 ; |ba - cb| | |
| paddd m_sum, m3 | |
| paddd m_sum, m5 | |
| jl .loop_16bit | |
| HADDD m_sum, m2 | |
| movd eax, m_sum | |
| RET | |
| %endmacro | |
| INIT_XMM sse2 | |
| IDET_FILTER_LINE_16BIT 8 | |
| ;****************************************************************************** | |
| ; SSE2 8-bit implementation that does 16-bytes at a time: | |
| INIT_XMM sse2 | |
| cglobal idet_filter_line, 4, 6, 7, a, b, c, width, index, total | |
| xor indexq, indexq | |
| pxor m0, m0 | |
| pxor m1, m1 | |
| .sse2_loop: | |
| movu m2, [bq + indexq*1] ; B | |
| movu m3, [aq + indexq*1] ; A | |
| mova m6, m2 | |
| mova m4, m3 | |
| psubusb m5, m2, m3 ; ba | |
| movu m3, [cq + indexq*1] ; C | |
| add indexq, 0x10 | |
| psubusb m4, m2 ; ab | |
| CMP indexd, widthd | |
| psubusb m6, m3 ; bc | |
| psubusb m3, m2 ; cb | |
| psadbw m4, m6 ; |ab - bc| | |
| paddq m0, m4 | |
| psadbw m5, m3 ; |ba - cb| | |
| paddq m1, m5 | |
| jl .sse2_loop | |
| paddq m0, m1 | |
| movhlps m1, m0 | |
| paddq m0, m1 | |
| movd eax, m0 | |
| RET | |