74 lines
2.8 KiB
C++
74 lines
2.8 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2017 - ROLI Ltd.
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 5 End-User License
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Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
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27th April 2017).
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End User License Agreement: www.juce.com/juce-5-licence
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Privacy Policy: www.juce.com/juce-5-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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AudioSubsectionReader::AudioSubsectionReader (AudioFormatReader* const source_,
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const int64 startSample_,
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const int64 length_,
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const bool deleteSourceWhenDeleted_)
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: AudioFormatReader (0, source_->getFormatName()),
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source (source_),
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startSample (startSample_),
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deleteSourceWhenDeleted (deleteSourceWhenDeleted_)
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{
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length = jmin (jmax ((int64) 0, source->lengthInSamples - startSample), length_);
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sampleRate = source->sampleRate;
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bitsPerSample = source->bitsPerSample;
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lengthInSamples = length;
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numChannels = source->numChannels;
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usesFloatingPointData = source->usesFloatingPointData;
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}
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AudioSubsectionReader::~AudioSubsectionReader()
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{
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if (deleteSourceWhenDeleted)
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delete source;
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}
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//==============================================================================
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bool AudioSubsectionReader::readSamples (int** destSamples, int numDestChannels, int startOffsetInDestBuffer,
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int64 startSampleInFile, int numSamples)
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{
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clearSamplesBeyondAvailableLength (destSamples, numDestChannels, startOffsetInDestBuffer,
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startSampleInFile, numSamples, length);
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return source->readSamples (destSamples, numDestChannels, startOffsetInDestBuffer,
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startSampleInFile + startSample, numSamples);
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}
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void AudioSubsectionReader::readMaxLevels (int64 startSampleInFile, int64 numSamples, Range<float>* results, int numChannelsToRead)
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{
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startSampleInFile = jmax ((int64) 0, startSampleInFile);
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numSamples = jmax ((int64) 0, jmin (numSamples, length - startSampleInFile));
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source->readMaxLevels (startSampleInFile + startSample, numSamples, results, numChannelsToRead);
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}
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} // namespace juce
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