Changed the OSS backend to detect if the DSP requires a conversion of

[wxWidgets.git] / src / unix / sound_sdl.cpp

diff --git a/src/unix/sound_sdl.cpp b/src/unix/sound_sdl.cpp
index b8c77fa00674bffad77fa121f832fdcef37f1dd2..16377aed4dbdd336537748ab5e16d3e67008136e 100644 (file)
--- a/src/unix/sound_sdl.cpp
+++ b/src/unix/sound_sdl.cpp
@@ -5,7 +5,7 @@
 // Modified by:
 // Created:     2004/01/31
 // RCS-ID:      $Id$
-// Copyright:   (c) 2004, Vaclav Slavik
+// Copyright:   (c) 2004, Open Source Applications Foundation
 // Licence:    wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
@@ -18,7 +18,7 @@
 #pragma hdrstop
 #endif
 
-#if wxUSE_WAVE && wxUSE_LIBSDL
+#if wxUSE_SOUND && wxUSE_LIBSDL
 
 #include <SDL.h>
 
@@ -56,8 +56,7 @@ END_DECLARE_EVENT_TYPES()
     DECLARE_EVENT_TABLE_ENTRY(wxEVT_SOUND_BACKEND_SDL_NOTIFICATION, \
                               -1,                       \
                               -1,                       \
-                              (wxObjectEventFunction)   \
-                              (wxSoundBackendSDLNotificationFunction)& func, \
+                              (wxObjectEventFunction)  wxStaticCastEvent( wxSoundBackendSDLNotificationFunction, & func ), \
                               (wxObject *) NULL ),
 
 IMPLEMENT_DYNAMIC_CLASS(wxSoundBackendSDLNotification, wxEvtHandler)
@@ -82,9 +81,12 @@ public:
     int GetPriority() const { return 9; }
     bool IsAvailable() const;
     bool HasNativeAsyncPlayback() const { return true; }
-    bool Play(wxSoundData *data, unsigned flags);
+    bool Play(wxSoundData *data, unsigned flags,
+              volatile wxSoundPlaybackStatus *status);
 
     void FillAudioBuffer(Uint8 *stream, int len);
+    void FinishedPlayback();
+    
     void Stop();
     bool IsPlaying() const { return m_playing; }
     
@@ -113,7 +115,7 @@ private:
     {
         wxLogTrace(_T("sound"),
                    _T("received playback status change notification"));
-        m_backend->Stop();
+        m_backend->FinishedPlayback();
     }
     wxSoundBackendSDL *m_backend;
 
@@ -191,6 +193,12 @@ void wxSoundBackendSDL::FillAudioBuffer(Uint8 *stream, int len)
     }
 }
 
+void wxSoundBackendSDL::FinishedPlayback()
+{
+    if (!m_playing)
+        Stop();
+}
+
 bool wxSoundBackendSDL::OpenAudio()
 {
     if (!m_audioOpen)
@@ -236,8 +244,11 @@ void wxSoundBackendSDL::CloseAudio()
     }
 }
 
-bool wxSoundBackendSDL::Play(wxSoundData *data, unsigned flags)
+bool wxSoundBackendSDL::Play(wxSoundData *data, unsigned flags,
+                             volatile wxSoundPlaybackStatus *WXUNUSED(status))
 {
+    Stop();
+    
     int format;
     if (data->m_bitsPerSample == 8)
         format = AUDIO_U8;
@@ -245,8 +256,6 @@ bool wxSoundBackendSDL::Play(wxSoundData *data, unsigned flags)
         format = AUDIO_S16LSB;
     else
         return false;
-    
-    SDL_LockAudio();
 
     bool needsOpen = true;
     if (m_audioOpen)
@@ -263,34 +272,31 @@ bool wxSoundBackendSDL::Play(wxSoundData *data, unsigned flags)
         }
     }
     
-    Stop();
-    
     if (needsOpen)
     {
         m_spec.format = format;
         m_spec.freq = data->m_samplingRate;
         m_spec.channels = data->m_channels;
         if (!OpenAudio())
-        {
-            SDL_UnlockAudio();
             return false;
-        }
     }
-
+    
+    SDL_LockAudio();
+    wxLogTrace(_T("sound"), _T("playing new sound"));
     m_playing = true;
     m_pos = 0;
     m_loop = (flags & wxSOUND_LOOP);
     m_data = data;
     data->IncRef();
+    SDL_UnlockAudio();
 
     SDL_PauseAudio(0);
-    SDL_UnlockAudio();
 
     // wait until playback finishes if called in sync mode:
     if (!(flags & wxSOUND_ASYNC))
     {
         wxLogTrace(_T("sound"), _T("waiting for sample to finish"));
-        while (m_playing)
+        while (m_playing && m_data == data)
         {
 #if wxUSE_THREADS
             // give the playback thread a chance to add event to pending
@@ -314,6 +320,7 @@ void wxSoundBackendSDL::Stop()
 {
     SDL_LockAudio();
     SDL_PauseAudio(1);
+    m_playing = false;
     if (m_data)
     {
         m_data->DecRef();
@@ -327,4 +334,4 @@ extern "C" wxSoundBackend *wxCreateSoundBackendSDL()
     return new wxSoundBackendSDL();
 }
 
-#endif // wxUSE_WAVE && wxUSE_LIBSDL
+#endif // wxUSE_SOUND && wxUSE_LIBSDL