b5875b9111
Similar to libswscale this does resampling and format convertion, just for audio instead of video. changing sampling rate, sample formats, channel layouts and sample packing all in one with a very simple public interface. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
39 lines
1.3 KiB
C
39 lines
1.3 KiB
C
/*
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* Copyright (C) 2011 Michael Niedermayer (michaelni@gmx.at)
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*
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* This file is part of libswresample
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*
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* libswresample 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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* libswresample 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 libswresample; 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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static void RENAME(sum2)(SAMPLE *out, const SAMPLE *in1, const SAMPLE *in2, float coeff1, float coeff2, int len){
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int i;
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for(i=0; i<len; i++)
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out[i] = coeff1*in1[i] + coeff2*in2[i]; //FIXME better int16
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}
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static void RENAME(copy)(SAMPLE *out, const SAMPLE *in, float coeff, int len){
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if(coeff == 1.0){
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memcpy(out, in, sizeof(SAMPLE)*len);
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}else{
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int i;
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for(i=0; i<len; i++)
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out[i] = coeff*in[i]; //FIXME better int16
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}
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}
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