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87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
/**
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* @file
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* @brief Header file for AudioResampler class
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* @author Jonathan Thomas <jonathan@openshot.org>
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*
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* @section LICENSE
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*
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* Copyright (c) 2008-2013 OpenShot Studios, LLC
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* (http://www.openshotstudios.com). This file is part of
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* OpenShot Library (http://www.openshot.org), an open-source project
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* dedicated to delivering high quality video editing and animation solutions
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* to the world.
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*
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* OpenShot Library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* OpenShot Library 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with OpenShot Library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef OPENSHOT_RESAMPLER_H
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#define OPENSHOT_RESAMPLER_H
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/// Do not include the juce unittest headers, because it collides with unittest++
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#ifndef __JUCE_UNITTEST_JUCEHEADER__
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#define __JUCE_UNITTEST_JUCEHEADER__
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#endif
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#ifndef _NDEBUG
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// Define NO debug for JUCE on mac os
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#define _NDEBUG
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#endif
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#include "JuceLibraryCode/JuceHeader.h"
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#include "AudioBufferSource.h"
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#include "Exceptions.h"
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namespace openshot {
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/**
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* @brief This class is used to resample audio data for many sequential frames.
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*
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* It maintains some data from the last call to GetResampledBuffer(), so there
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* are no pops and clicks between frames.
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*/
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class AudioResampler {
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private:
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AudioSampleBuffer *buffer;
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AudioSampleBuffer *resampled_buffer;
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AudioBufferSource *buffer_source;
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ResamplingAudioSource *resample_source;
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AudioSourceChannelInfo resample_callback_buffer;
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int num_of_samples;
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int new_num_of_samples;
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double dest_ratio;
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double source_ratio;
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bool isPrepared;
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public:
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/// Default constructor
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AudioResampler();
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/// Destructor
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~AudioResampler();
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/// Sets the audio buffer and key settings
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int SetBuffer(AudioSampleBuffer *new_buffer, double sample_rate, double new_sample_rate);
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/// Sets the audio buffer and key settings
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int SetBuffer(AudioSampleBuffer *new_buffer, double ratio);
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/// Get the resampled audio buffer
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AudioSampleBuffer* GetResampledBuffer();
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};
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}
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#endif
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