- port to minGw

git-svn-id: http://moon:8086/svn/software/trunk/projects/JaySynth@235 b431acfa-c32f-4a4a-93f1-934dc6c82436
2015-02-21 17:09:43 +00:00
parent 843c6e300c
commit cfc9645b0b
1093 changed files with 426078 additions and 143 deletions
@@ -0,0 +1,111 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2013 - Raw Material Software Ltd.
+
+   Permission is granted to use this software under the terms of either:
+   a) the GPL v2 (or any later version)
+   b) the Affero GPL v3
+
+   Details of these licenses can be found at: www.gnu.org/licenses
+
+   JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
+   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+   A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+   ------------------------------------------------------------------------------
+
+   To release a closed-source product which uses JUCE, commercial licenses are
+   available: visit www.juce.com for more information.
+
+  ==============================================================================
+*/
+
+#ifndef JUCE_BUFFERINGAUDIOSOURCE_H_INCLUDED
+#define JUCE_BUFFERINGAUDIOSOURCE_H_INCLUDED
+
+
+//==============================================================================
+/**
+    An AudioSource which takes another source as input, and buffers it using a thread.
+
+    Create this as a wrapper around another thread, and it will read-ahead with
+    a background thread to smooth out playback. You can either create one of these
+    directly, or use it indirectly using an AudioTransportSource.
+
+    @see PositionableAudioSource, AudioTransportSource
+*/
+class JUCE_API  BufferingAudioSource  : public PositionableAudioSource,
+                                        private TimeSliceClient
+{
+public:
+    //==============================================================================
+    /** Creates a BufferingAudioSource.
+
+        @param source                   the input source to read from
+        @param backgroundThread         a background thread that will be used for the
+                                        background read-ahead. This object must not be deleted
+                                        until after any BufferedAudioSources that are using it
+                                        have been deleted!
+        @param deleteSourceWhenDeleted  if true, then the input source object will
+                                        be deleted when this object is deleted
+        @param numberOfSamplesToBuffer  the size of buffer to use for reading ahead
+        @param numberOfChannels         the number of channels that will be played
+    */
+    BufferingAudioSource (PositionableAudioSource* source,
+                          TimeSliceThread& backgroundThread,
+                          bool deleteSourceWhenDeleted,
+                          int numberOfSamplesToBuffer,
+                          int numberOfChannels = 2);
+
+    /** Destructor.
+
+        The input source may be deleted depending on whether the deleteSourceWhenDeleted
+        flag was set in the constructor.
+    */
+    ~BufferingAudioSource();
+
+    //==============================================================================
+    /** Implementation of the AudioSource method. */
+    void prepareToPlay (int samplesPerBlockExpected, double sampleRate) override;
+
+    /** Implementation of the AudioSource method. */
+    void releaseResources() override;
+
+    /** Implementation of the AudioSource method. */
+    void getNextAudioBlock (const AudioSourceChannelInfo&) override;
+
+    //==============================================================================
+    /** Implements the PositionableAudioSource method. */
+    void setNextReadPosition (int64 newPosition) override;
+
+    /** Implements the PositionableAudioSource method. */
+    int64 getNextReadPosition() const override;
+
+    /** Implements the PositionableAudioSource method. */
+    int64 getTotalLength() const override       { return source->getTotalLength(); }
+
+    /** Implements the PositionableAudioSource method. */
+    bool isLooping() const override             { return source->isLooping(); }
+
+private:
+    //==============================================================================
+    OptionalScopedPointer<PositionableAudioSource> source;
+    TimeSliceThread& backgroundThread;
+    int numberOfSamplesToBuffer, numberOfChannels;
+    AudioSampleBuffer buffer;
+    CriticalSection bufferStartPosLock;
+    int64 volatile bufferValidStart, bufferValidEnd, nextPlayPos;
+    double volatile sampleRate;
+    bool wasSourceLooping, isPrepared;
+
+    bool readNextBufferChunk();
+    void readBufferSection (int64 start, int length, int bufferOffset);
+    int useTimeSlice() override;
+
+    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (BufferingAudioSource)
+};
+
+
+#endif   // JUCE_BUFFERINGAUDIOSOURCE_H_INCLUDED