comparison audioio/AudioPortAudioTarget.h @ 43:3c5756fb6a68

* Move some things around to facilitate plundering libraries for other
  applications without needing to duplicate so much code.
    sv/osc -> data/osc
    sv/audioio -> audioio
    sv/transform -> plugin/transform
    sv/document -> document (will rename to framework in next commit)

+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    This file copyright 2006 Chris Cannam.
+    
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#ifndef _AUDIO_PORT_AUDIO_TARGET_H_
+#define _AUDIO_PORT_AUDIO_TARGET_H_
+
+#ifdef HAVE_PORTAUDIO
+
+// This code can be compiled for either PortAudio v18 or v19.
+// PortAudio v19 is the default.  If you want to use v18, define
+// the preprocessor symbol HAVE_PORTAUDIO_v18.
+
+#include <portaudio.h>
+#include <vector>
+
+#include "AudioCallbackPlayTarget.h"
+
+class AudioCallbackPlaySource;
+
+class AudioPortAudioTarget : public AudioCallbackPlayTarget
+{
+    Q_OBJECT
+
+public:
+    AudioPortAudioTarget(AudioCallbackPlaySource *source);
+    virtual ~AudioPortAudioTarget();
+
+    virtual bool isOK() const;
+
+public slots:
+    virtual void sourceModelReplaced();
+
+protected:
+#ifdef HAVE_PORTAUDIO_V18
+
+    int process(void *input, void *output, unsigned long frames,
+		PaTimestamp outTime);
+
+    static int processStatic(void *, void *, unsigned long,
+			     PaTimestamp, void *);
+
+    PortAudioStream *m_stream;
+
+#else
+
+    int process(const void *input, void *output, unsigned long frames,
+                const PaStreamCallbackTimeInfo *timeInfo,
+                PaStreamCallbackFlags statusFlags);
+
+    static int processStatic(const void *, void *, unsigned long,
+                             const PaStreamCallbackTimeInfo *,
+                             PaStreamCallbackFlags, void *);
+
+    PaStream *m_stream;
+
+#endif
+
+    int m_bufferSize;
+    int m_sampleRate;
+    int m_latency;
+};
+
+#endif /* HAVE_PORTAUDIO */
+
+#endif
+