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https://github.com/FFmpeg/FFmpeg.git
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55 lines
1.8 KiB
NASM
55 lines
1.8 KiB
NASM
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;******************************************************************************
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;* SIMD optimized DSP functions for G722 coding
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;*
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;* Copyright (c) 2014 James Almer
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;*
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;* This file is part of FFmpeg.
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;*
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;* FFmpeg is free software; you can redistribute it and/or
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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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;* FFmpeg is distributed in the hope that it will be useful,
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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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;* License along with FFmpeg; if not, write to the Free Software
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;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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;******************************************************************************
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%include "libavutil/x86/x86util.asm"
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SECTION_RODATA
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pw_qmf_coeffs: dw 3, -210, -11, -805, -11, 951, 53, 3876
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pw_qmf_coeffs2: dw 12, 3876, -156, 951, 32, -805, 362, -210
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pw_qmf_coeffs3: dw 362, 0 , 32, 0, -156, 0, 12, 0
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pw_qmf_coeffs4: dw 53, 0, -11, 0, -11, 0, 3, 0
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SECTION_TEXT
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INIT_XMM sse2
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cglobal g722_apply_qmf, 2, 2, 5, prev, out
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movu m0, [prevq+mmsize*0]
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movu m1, [prevq+mmsize*1]
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movu m2, [prevq+mmsize*2]
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punpcklwd m3, m0, m1
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punpckhwd m0, m1
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punpcklwd m4, m2, m2
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punpckhwd m2, m2
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pmaddwd m3, [pw_qmf_coeffs ]
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pmaddwd m0, [pw_qmf_coeffs2]
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pmaddwd m4, [pw_qmf_coeffs3]
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pmaddwd m2, [pw_qmf_coeffs4]
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paddd m0, m3
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paddd m2, m4
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paddd m0, m2
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pshufd m2, m0, q0032
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paddd m0, m2
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pshufd m0, m0, q0001
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movq [outq], m0
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RET
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