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134 lines
4.4 KiB
C++
134 lines
4.4 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library - "Jules' Utility Class Extensions"
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Copyright 2004-11 by Raw Material Software Ltd.
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------------------------------------------------------------------------------
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JUCE can be redistributed and/or modified under the terms of the GNU General
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Public License (Version 2), as published by the Free Software Foundation.
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A copy of the license is included in the JUCE distribution, or can be found
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online at www.gnu.org/licenses.
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JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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------------------------------------------------------------------------------
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To release a closed-source product which uses JUCE, commercial licenses are
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available: visit www.rawmaterialsoftware.com/juce for more information.
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==============================================================================
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*/
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#include "../../core/juce_StandardHeader.h"
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BEGIN_JUCE_NAMESPACE
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#include "juce_AudioFormatReaderSource.h"
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#include "../../threads/juce_ScopedLock.h"
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//==============================================================================
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AudioFormatReaderSource::AudioFormatReaderSource (AudioFormatReader* const reader_,
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const bool deleteReaderWhenThisIsDeleted)
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: reader (reader_),
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deleteReader (deleteReaderWhenThisIsDeleted),
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nextPlayPos (0),
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looping (false)
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{
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jassert (reader != 0);
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}
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AudioFormatReaderSource::~AudioFormatReaderSource()
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{
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releaseResources();
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if (deleteReader)
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delete reader;
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}
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void AudioFormatReaderSource::setNextReadPosition (int64 newPosition)
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{
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nextPlayPos = newPosition;
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}
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void AudioFormatReaderSource::setLooping (bool shouldLoop)
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{
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looping = shouldLoop;
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}
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int64 AudioFormatReaderSource::getNextReadPosition() const
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{
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return looping ? nextPlayPos % reader->lengthInSamples
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: nextPlayPos;
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}
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int64 AudioFormatReaderSource::getTotalLength() const
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{
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return reader->lengthInSamples;
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}
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void AudioFormatReaderSource::prepareToPlay (int /*samplesPerBlockExpected*/,
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double /*sampleRate*/)
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{
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}
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void AudioFormatReaderSource::releaseResources()
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{
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}
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void AudioFormatReaderSource::getNextAudioBlock (const AudioSourceChannelInfo& info)
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{
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if (info.numSamples > 0)
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{
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const int64 start = nextPlayPos;
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if (looping)
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{
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const int newStart = start % (int) reader->lengthInSamples;
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const int newEnd = (start + info.numSamples) % (int) reader->lengthInSamples;
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if (newEnd > newStart)
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{
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info.buffer->readFromAudioReader (reader,
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info.startSample,
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newEnd - newStart,
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newStart,
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true, true);
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}
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else
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{
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const int endSamps = (int) reader->lengthInSamples - newStart;
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info.buffer->readFromAudioReader (reader,
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info.startSample,
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endSamps,
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newStart,
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true, true);
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info.buffer->readFromAudioReader (reader,
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info.startSample + endSamps,
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newEnd,
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0,
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true, true);
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}
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nextPlayPos = newEnd;
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}
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else
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{
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info.buffer->readFromAudioReader (reader,
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info.startSample,
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info.numSamples,
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start,
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true, true);
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nextPlayPos += info.numSamples;
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}
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}
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}
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END_JUCE_NAMESPACE
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