comparison plugin/plugins/SamplePlayer.h @ 0:da6937383da8

initial import

+/* -*- c-basic-offset: 4 -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    A waveform viewer and audio annotation editor.
+    Chris Cannam, Queen Mary University of London, 2005
+    
+    This is experimental software.  Not for distribution.
+*/
+
+#ifndef _SAMPLE_PLAYER_H_
+#define _SAMPLE_PLAYER_H_
+
+#define DSSI_API_LEVEL 2
+
+#include <ladspa.h>
+#include <dssi.h>
+#include <seq_event.h>
+
+#include <QMutex>
+#include <QString>
+#include <vector>
+
+class SamplePlayer
+{
+public:
+    static const DSSI_Descriptor *getDescriptor(unsigned long index);
+
+private:
+    SamplePlayer(int sampleRate);
+    ~SamplePlayer();
+
+    enum {
+	OutputPort    = 0,
+	RetunePort    = 1,
+	BasePitchPort = 2,
+	SustainPort   = 3,
+	ReleasePort   = 4,
+	PortCount     = 5
+    };
+
+    enum {
+	Polyphony = 128
+    };
+
+    static const char *const portNames[PortCount];
+    static const LADSPA_PortDescriptor ports[PortCount];
+    static const LADSPA_PortRangeHint hints[PortCount];
+    static const LADSPA_Properties properties;
+    static const LADSPA_Descriptor ladspaDescriptor;
+    static const DSSI_Descriptor dssiDescriptor;
+    static const DSSI_Host_Descriptor *hostDescriptor;
+
+    static LADSPA_Handle instantiate(const LADSPA_Descriptor *, unsigned long);
+    static void connectPort(LADSPA_Handle, unsigned long, LADSPA_Data *);
+    static void activate(LADSPA_Handle);
+    static void run(LADSPA_Handle, unsigned long);
+    static void deactivate(LADSPA_Handle);
+    static void cleanup(LADSPA_Handle);
+    static const DSSI_Program_Descriptor *getProgram(LADSPA_Handle, unsigned long);
+    static void selectProgram(LADSPA_Handle, unsigned long, unsigned long);
+    static int getMidiController(LADSPA_Handle, unsigned long);
+    static void runSynth(LADSPA_Handle, unsigned long,
+			 snd_seq_event_t *, unsigned long);
+    static void receiveHostDescriptor(const DSSI_Host_Descriptor *descriptor);
+    static void workThreadCallback(LADSPA_Handle);
+
+    void searchSamples();
+    void loadSampleData(QString path);
+    void runImpl(unsigned long, snd_seq_event_t *, unsigned long);
+    void addSample(int, unsigned long, unsigned long);
+
+    float *m_output;
+    float *m_retune;
+    float *m_basePitch;
+    float *m_sustain;
+    float *m_release;
+
+    float *m_sampleData;
+    size_t m_sampleCount;
+    int m_sampleRate;
+
+    long m_ons[Polyphony];
+    long m_offs[Polyphony];
+    int m_velocities[Polyphony];
+    long m_sampleNo;
+
+    QString m_program;
+    std::vector<std::pair<QString, QString> > m_samples; // program name, path
+    bool m_sampleSearchComplete;
+    int m_pendingProgramChange;
+
+    QMutex m_mutex;
+};
+
+
+#endif