mirror of
https://github.com/FFmpeg/FFmpeg.git
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f1e490b1ad
This was originally based on libsbc, and was fully integrated into ffmpeg. Rough speed test: C version: speed= 592x MMX version: speed= 785x
169 lines
5.6 KiB
NASM
169 lines
5.6 KiB
NASM
;******************************************************************************
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;* SIMD optimized SBC encoder DSP functions
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;*
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;* Copyright (C) 2017 Aurelien Jacobs <aurel@gnuage.org>
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;* Copyright (C) 2008-2010 Nokia Corporation
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;* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
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;* Copyright (C) 2004-2005 Henryk Ploetz <henryk@ploetzli.ch>
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;* Copyright (C) 2005-2006 Brad Midgley <bmidgley@xmission.com>
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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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scale_mask: times 2 dd 0x8000 ; 1 << (SBC_PROTO_FIXED_SCALE - 1)
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SECTION .text
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%macro NIDN 3
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%ifnidn %2, %3
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%1 %2, %3
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%endif
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%endmacro
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%macro ANALYZE_MAC 9 ; out1, out2, in1, in2, tmp1, tmp2, add1, add2, offset
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NIDN movq, %5, %3
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NIDN movq, %6, %4
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pmaddwd %5, [constsq+%9]
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pmaddwd %6, [constsq+%9+8]
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NIDN paddd, %1, %7
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NIDN paddd, %2, %8
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%endmacro
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%macro ANALYZE_MAC_IN 7 ; out1, out2, tmp1, tmp2, add1, add2, offset
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ANALYZE_MAC %1, %2, [inq+%7], [inq+%7+8], %3, %4, %5, %6, %7
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%endmacro
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%macro ANALYZE_MAC_REG 7 ; out1, out2, in, tmp1, tmp2, offset, pack
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%ifidn %7, pack
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psrad %3, 16 ; SBC_PROTO_FIXED_SCALE
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packssdw %3, %3
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%endif
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ANALYZE_MAC %1, %2, %3, %3, %4, %5, %4, %5, %6
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%endmacro
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;*******************************************************************
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;void ff_sbc_analyze_4(const int16_t *in, int32_t *out, const int16_t *consts);
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;*******************************************************************
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INIT_MMX mmx
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cglobal sbc_analyze_4, 3, 3, 4, in, out, consts
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ANALYZE_MAC_IN m0, m1, m0, m1, [scale_mask], [scale_mask], 0
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ANALYZE_MAC_IN m0, m1, m2, m3, m2, m3, 16
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ANALYZE_MAC_IN m0, m1, m2, m3, m2, m3, 32
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ANALYZE_MAC_IN m0, m1, m2, m3, m2, m3, 48
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ANALYZE_MAC_IN m0, m1, m2, m3, m2, m3, 64
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ANALYZE_MAC_REG m0, m2, m0, m0, m2, 80, pack
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ANALYZE_MAC_REG m0, m2, m1, m1, m3, 96, pack
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movq [outq ], m0
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movq [outq+8], m2
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RET
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;*******************************************************************
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;void ff_sbc_analyze_8(const int16_t *in, int32_t *out, const int16_t *consts);
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;*******************************************************************
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INIT_MMX mmx
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cglobal sbc_analyze_8, 3, 3, 4, in, out, consts
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ANALYZE_MAC_IN m0, m1, m0, m1, [scale_mask], [scale_mask], 0
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ANALYZE_MAC_IN m2, m3, m2, m3, [scale_mask], [scale_mask], 16
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ANALYZE_MAC_IN m0, m1, m4, m5, m4, m5, 32
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ANALYZE_MAC_IN m2, m3, m6, m7, m6, m7, 48
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ANALYZE_MAC_IN m0, m1, m4, m5, m4, m5, 64
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ANALYZE_MAC_IN m2, m3, m6, m7, m6, m7, 80
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ANALYZE_MAC_IN m0, m1, m4, m5, m4, m5, 96
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ANALYZE_MAC_IN m2, m3, m6, m7, m6, m7, 112
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ANALYZE_MAC_IN m0, m1, m4, m5, m4, m5, 128
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ANALYZE_MAC_IN m2, m3, m6, m7, m6, m7, 144
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ANALYZE_MAC_REG m4, m5, m0, m4, m5, 160, pack
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ANALYZE_MAC_REG m4, m5, m1, m6, m7, 192, pack
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ANALYZE_MAC_REG m4, m5, m2, m6, m7, 224, pack
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ANALYZE_MAC_REG m4, m5, m3, m6, m7, 256, pack
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movq [outq ], m4
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movq [outq+8], m5
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ANALYZE_MAC_REG m0, m5, m0, m0, m5, 176, no
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ANALYZE_MAC_REG m0, m5, m1, m1, m7, 208, no
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ANALYZE_MAC_REG m0, m5, m2, m2, m7, 240, no
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ANALYZE_MAC_REG m0, m5, m3, m3, m7, 272, no
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movq [outq+16], m0
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movq [outq+24], m5
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RET
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;*******************************************************************
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;void ff_sbc_calc_scalefactors(int32_t sb_sample_f[16][2][8],
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; uint32_t scale_factor[2][8],
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; int blocks, int channels, int subbands)
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;*******************************************************************
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INIT_MMX mmx
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cglobal sbc_calc_scalefactors, 5, 7, 4, sb_sample_f, scale_factor, blocks, channels, subbands, ptr, blk
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; subbands = 4 * subbands * channels
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movq m3, [scale_mask]
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shl subbandsd, 2
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cmp channelsd, 2
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jl .loop_1
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shl subbandsd, 1
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.loop_1:
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sub subbandsq, 8
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lea ptrq, [sb_sample_fq + subbandsq]
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; blk = (blocks - 1) * 64;
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lea blkq, [blocksq - 1]
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shl blkd, 6
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movq m0, m3
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.loop_2:
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movq m1, [ptrq+blkq]
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pxor m2, m2
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pcmpgtd m1, m2
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paddd m1, [ptrq+blkq]
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pcmpgtd m2, m1
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pxor m1, m2
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por m0, m1
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sub blkq, 64
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jns .loop_2
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movd blkd, m0
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psrlq m0, 32
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bsr blkd, blkd
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sub blkd, 15 ; SCALE_OUT_BITS
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mov [scale_factorq + subbandsq], blkd
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movd blkd, m0
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bsr blkd, blkd
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sub blkd, 15 ; SCALE_OUT_BITS
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mov [scale_factorq + subbandsq + 4], blkd
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cmp subbandsq, 0
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jg .loop_1
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emms
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RET
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