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juce_AudioSubsectionReader.cpp
/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2022 - Raw Material Software Limited
JUCE is an open source library subject to commercial or open-source
licensing.
By using JUCE, you agree to the terms of both the JUCE 7 End-User License
Agreement and JUCE Privacy Policy.
End User License Agreement: www.juce.com/juce-7-licence
Privacy Policy: www.juce.com/juce-privacy-policy
Or: You may also use this code under the terms of the GPL v3 (see
www.gnu.org/licenses).
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
DISCLAIMED.
==============================================================================
*/
namespace juce
{
AudioSubsectionReader::AudioSubsectionReader (AudioFormatReader* sourceToUse,
int64 startSampleToUse, int64 lengthToUse,
bool deleteSource)
: AudioFormatReader (nullptr, sourceToUse->getFormatName()),
source (sourceToUse),
startSample (startSampleToUse),
deleteSourceWhenDeleted (deleteSource)
{
length = jmin (jmax ((int64) 0, source->lengthInSamples - startSample), lengthToUse);
sampleRate = source->sampleRate;
bitsPerSample = source->bitsPerSample;
lengthInSamples = length;
numChannels = source->numChannels;
usesFloatingPointData = source->usesFloatingPointData;
}
AudioSubsectionReader::~AudioSubsectionReader()
{
if (deleteSourceWhenDeleted)
delete source;
}
//==============================================================================
bool AudioSubsectionReader::readSamples (int* const* destSamples, int numDestChannels, int startOffsetInDestBuffer,
int64 startSampleInFile, int numSamples)
{
clearSamplesBeyondAvailableLength (destSamples, numDestChannels, startOffsetInDestBuffer,
startSampleInFile, numSamples, length);
if (numSamples <= 0)
return true;
return source->readSamples (destSamples, numDestChannels, startOffsetInDestBuffer,
startSampleInFile + startSample, numSamples);
}
void AudioSubsectionReader::readMaxLevels (int64 startSampleInFile, int64 numSamples, Range<float>* results, int numChannelsToRead)
{
startSampleInFile = jmax ((int64) 0, startSampleInFile);
numSamples = jmax ((int64) 0, jmin (numSamples, length - startSampleInFile));
source->readMaxLevels (startSampleInFile + startSample, numSamples, results, numChannelsToRead);
}
} // namespace juce
juce::AudioFormatReader::usesFloatingPointData
bool usesFloatingPointData
Definition juce_AudioFormatReader.h:237
juce::AudioFormatReader::getFormatName
const String & getFormatName() const noexcept
Definition juce_AudioFormatReader.h:68
juce::AudioFormatReader::clearSamplesBeyondAvailableLength
static void clearSamplesBeyondAvailableLength(int *const *destChannels, int numDestChannels, int startOffsetInDestBuffer, int64 startSampleInFile, int &numSamples, int64 fileLengthInSamples)
Definition juce_AudioFormatReader.h:309
juce::AudioFormatReader::lengthInSamples
int64 lengthInSamples
Definition juce_AudioFormatReader.h:231
juce::AudioFormatReader::sampleRate
double sampleRate
Definition juce_AudioFormatReader.h:225
juce::AudioFormatReader::AudioFormatReader
AudioFormatReader(InputStream *sourceStream, const String &formatName)
Definition juce_AudioFormatReader.cpp:29
juce::AudioFormatReader::bitsPerSample
unsigned int bitsPerSample
Definition juce_AudioFormatReader.h:228
juce::AudioFormatReader::numChannels
unsigned int numChannels
Definition juce_AudioFormatReader.h:234
juce::AudioSubsectionReader::AudioSubsectionReader
AudioSubsectionReader(AudioFormatReader *sourceReader, int64 subsectionStartSample, int64 subsectionLength, bool deleteSourceWhenDeleted)
Definition juce_AudioSubsectionReader.cpp:29
juce::AudioSubsectionReader::~AudioSubsectionReader
~AudioSubsectionReader() override
Definition juce_AudioSubsectionReader.cpp:46
juce::AudioSubsectionReader::readMaxLevels
void readMaxLevels(int64 startSample, int64 numSamples, Range< float > *results, int numChannelsToRead) override
Definition juce_AudioSubsectionReader.cpp:66
juce::AudioSubsectionReader::readSamples
bool readSamples(int *const *destSamples, int numDestChannels, int startOffsetInDestBuffer, int64 startSampleInFile, int numSamples) override
Definition juce_AudioSubsectionReader.cpp:53
juce::Range
Definition juce_Range.h:40