| 1 | /* |
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| 2 | Copyright 2018 Google Inc. All Rights Reserved. |
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| 3 | |
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| 4 | Licensed under the Apache License, Version 2.0 (the "License"); |
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| 5 | you may not use this file except in compliance with the License. |
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| 6 | You may obtain a copy of the License at |
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| 7 | |
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| 8 | http://www.apache.org/licenses/LICENSE-2.0 |
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| 9 | |
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| 10 | Unless required by applicable law or agreed to in writing, software |
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| 11 | distributed under the License is distributed on an "AS-IS" BASIS, |
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| 12 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 13 | See the License for the specific language governing permissions and |
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| 14 | limitations under the License. |
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| 15 | */ |
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| 16 | |
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| 17 | #ifndef RESONANCE_AUDIO_DSP_CHANNEL_CONVERTER_H_ |
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| 18 | #define RESONANCE_AUDIO_DSP_CHANNEL_CONVERTER_H_ |
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| 19 | |
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| 20 | #include "base/audio_buffer.h" |
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| 21 | |
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| 22 | namespace vraudio { |
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| 23 | |
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| 24 | // Converts a mono |input| buffer to a stereo |output| buffer by preserving the |
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| 25 | // signal energy. |
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| 26 | // |
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| 27 | // @param input Mono input buffer. |
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| 28 | // @param output Pointer to a stereo output buffer. |
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| 29 | void ConvertStereoFromMono(const AudioBuffer& input, AudioBuffer* output); |
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| 30 | |
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| 31 | // Converts a stereo |input| buffer to a mono |output| buffer by preserving the |
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| 32 | // signal energy. |
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| 33 | // |
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| 34 | // @param input Stereo input buffer. |
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| 35 | // @param output Pointer to a mono output buffer. |
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| 36 | void ConvertMonoFromStereo(const AudioBuffer& input, AudioBuffer* output); |
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| 37 | |
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| 38 | } // namespace vraudio |
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| 39 | |
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| 40 | #endif // RESONANCE_AUDIO_DSP_CHANNEL_CONVERTER_H_ |
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| 41 | |
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