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Add audio_utils.h header in PortaudioBackend for de/interleaving audio data

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Tim Mayberry 2015-08-31 20:28:07 +10:00
parent 23a490c906
commit a6fb71022f
1 changed files with 54 additions and 0 deletions
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54
libs/backends/portaudio/audio_utils.h Normal file
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/*
* Copyright (C) 2015 Tim Mayberry <mojofunk@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef AUDIO_UTILS_H
#define AUDIO_UTILS_H
#include <stdint.h>
inline
void
deinterleave_audio_data(const float* interleaved_input,
float* output,
uint32_t frame_count,
uint32_t channel,
uint32_t channel_count)
{
const float* ptr = interleaved_input + channel;
while (frame_count-- > 0) {
*output++ = *ptr;
ptr += channel_count;
}
}
inline
void
interleave_audio_data(float* input,
float* interleaved_output,
uint32_t frame_count,
uint32_t channel,
uint32_t channel_count)
{
float* ptr = interleaved_output + channel;
while (frame_count-- > 0) {
*ptr = *input++;
ptr += channel_count;
}
}
#endif // AUDIO_UTILS_H