http://code.google.com/p/rpcs3/source/detail?r=44

wxWidgets/include/wx/unix/sound.h

@@ -0,0 +1,161 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/unix/sound.h
+// Purpose:     wxSound class
+// Author:      Julian Smart, Vaclav Slavik
+// Modified by:
+// Created:     25/10/98
+// RCS-ID:      $Id: sound.h 42115 2006-10-19 13:09:48Z VZ $
+// Copyright:   (c) Julian Smart, Vaclav Slavik
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_SOUND_H_
+#define _WX_SOUND_H_
+
+#include "wx/defs.h"
+
+#if wxUSE_SOUND
+
+#include "wx/object.h"
+
+// ----------------------------------------------------------------------------
+// wxSound: simple audio playback class
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_ADV wxSoundBackend;
+class WXDLLIMPEXP_ADV wxSound;
+class WXDLLIMPEXP_BASE wxDynamicLibrary;
+
+/// Sound data, as loaded from .wav file:
+class WXDLLIMPEXP_ADV wxSoundData
+{
+public:
+    wxSoundData() : m_refCnt(1) {}
+    void IncRef();
+    void DecRef();
+
+    // .wav header information:
+    unsigned m_channels;       // num of channels (mono:1, stereo:2)
+    unsigned m_samplingRate;
+    unsigned m_bitsPerSample;  // if 8, then m_data contains unsigned 8bit
+                               // samples (wxUint8), if 16 then signed 16bit
+                               // (wxInt16)
+    unsigned m_samples;        // length in samples:
+
+    // wave data:
+    size_t   m_dataBytes;
+    wxUint8 *m_data;           // m_dataBytes bytes of data
+
+private:
+    ~wxSoundData();
+    unsigned m_refCnt;
+    wxUint8 *m_dataWithHeader; // ditto, but prefixed with .wav header
+    friend class wxSound;
+};
+
+
+/// Simple sound class:
+class WXDLLIMPEXP_ADV wxSound : public wxSoundBase
+{
+public:
+    wxSound();
+    wxSound(const wxString& fileName, bool isResource = false);
+    wxSound(int size, const wxByte* data);
+    virtual ~wxSound();
+
+    // Create from resource or file
+    bool Create(const wxString& fileName, bool isResource = false);
+    // Create from data
+    bool Create(int size, const wxByte* data);
+
+    bool IsOk() const { return m_data != NULL; }
+
+    // Stop playing any sound
+    static void Stop();
+
+    // Returns true if a sound is being played
+    static bool IsPlaying();
+
+    // for internal use
+    static void UnloadBackend();
+
+protected:
+    bool DoPlay(unsigned flags) const;
+
+    static void EnsureBackend();
+    void Free();
+    bool LoadWAV(const wxUint8 *data, size_t length, bool copyData);
+
+    static wxSoundBackend *ms_backend;
+#if wxUSE_LIBSDL && wxUSE_PLUGINS
+    // FIXME - temporary, until we have plugins architecture
+    static wxDynamicLibrary *ms_backendSDL;
+#endif
+
+private:
+    wxSoundData *m_data;
+};
+
+
+// ----------------------------------------------------------------------------
+// wxSoundBackend:
+// ----------------------------------------------------------------------------
+
+// This is interface to sound playing implementation. There are multiple
+// sound architectures in use on Unix platforms and wxWidgets can use several
+// of them for playback, depending on their availability at runtime; hence
+// the need for backends. This class is for use by wxWidgets and people writing
+// additional backends only, it is _not_ for use by applications!
+
+// Structure that holds playback status information
+struct wxSoundPlaybackStatus
+{
+    // playback is in progress
+    bool m_playing;
+    // main thread called wxSound::Stop()
+    bool m_stopRequested;
+};
+
+// Audio backend interface
+class WXDLLIMPEXP_ADV wxSoundBackend
+{
+public:
+    virtual ~wxSoundBackend() {}
+
+    // Returns the name of the backend (e.g. "Open Sound System")
+    virtual wxString GetName() const = 0;
+
+    // Returns priority (higher priority backends are tried first)
+    virtual int GetPriority() const = 0;
+
+    // Checks if the backend's audio system is available and the backend can
+    // be used for playback
+    virtual bool IsAvailable() const = 0;
+
+    // Returns true if the backend is capable of playing sound asynchronously.
+    // If false, then wxWidgets creates a playback thread and handles async
+    // playback, otherwise it is left up to the backend (will usually be more
+    // effective).
+    virtual bool HasNativeAsyncPlayback() const = 0;
+
+    // Plays the sound. flags are same flags as those passed to wxSound::Play.
+    // The function should periodically check the value of
+    // status->m_stopRequested and terminate if it is set to true (it may
+    // be modified by another thread)
+    virtual bool Play(wxSoundData *data, unsigned flags,
+                      volatile wxSoundPlaybackStatus *status) = 0;
+
+    // Stops playback (if something is played).
+    virtual void Stop() = 0;
+
+    // Returns true if the backend is playing anything at the moment.
+    // (This method is never called for backends that don't support async
+    // playback.)
+    virtual bool IsPlaying() const = 0;
+};
+
+
+#endif // wxUSE_SOUND
+
+#endif // _WX_SOUND_H_
+