diff options
author | Tim Mayberry <mojofunk@gmail.com> | 2015-08-31 20:28:07 +1000 |
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committer | Tim Mayberry <mojofunk@gmail.com> | 2015-09-02 12:07:59 +1000 |
commit | a6fb71022ff039fb7d133e8bb970c36df0799fd1 (patch) | |
tree | 8157718d4fec497dc412525c02d37ade261102eb /libs | |
parent | 23a490c906974b0fc7ba46c58e533d2733c3a5d4 (diff) |
Add audio_utils.h header in PortaudioBackend for de/interleaving audio data
Diffstat (limited to 'libs')
-rw-r--r-- | libs/backends/portaudio/audio_utils.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/libs/backends/portaudio/audio_utils.h b/libs/backends/portaudio/audio_utils.h new file mode 100644 index 0000000000..5e7d0a1a2a --- /dev/null +++ b/libs/backends/portaudio/audio_utils.h @@ -0,0 +1,54 @@ +/* + * 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 |