X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/9be32e8f2d2b7ada287f03a0e19e3a40db2e9770..fea909e19e86b8da2d54c530d3a89ee9456c3333:/src/unix/sound_sdl.cpp diff --git a/src/unix/sound_sdl.cpp b/src/unix/sound_sdl.cpp index 72c0e70dc2..972ebd11e4 100644 --- a/src/unix/sound_sdl.cpp +++ b/src/unix/sound_sdl.cpp @@ -1,24 +1,22 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: sound_sdl.cpp +// Name: src/unix/sound_sdl.cpp // Purpose: wxSound backend using SDL // Author: Vaclav Slavik // Modified by: // Created: 2004/01/31 // RCS-ID: $Id$ -// Copyright: (c) 2004, Vaclav Slavik -// Licence: wxWindows licence +// Copyright: (c) 2004, Open Source Applications Foundation +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// // for compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" -#include "wx/setup.h" - #if defined(__BORLANDC__) -#pragma hdrstop + #pragma hdrstop #endif -#if wxUSE_WAVE && wxUSE_LIBSDL +#if wxUSE_SOUND && wxUSE_LIBSDL #include @@ -26,38 +24,23 @@ #include "wx/event.h" #include "wx/intl.h" #include "wx/log.h" - #include "wx/list.h" #include "wx/utils.h" + #include "wx/module.h" #endif #include "wx/thread.h" -#include "wx/module.h" #include "wx/sound.h" -#include "wx/listimpl.cpp" // ---------------------------------------------------------------------------- // wxSoundBackendSDL, for Unix with libSDL // ---------------------------------------------------------------------------- -struct wxSoundBackendSDLQueueEntry -{ - wxSoundData *m_data; - unsigned m_pos; - SDL_AudioSpec m_spec; - bool m_loop; - bool m_finished; -}; - -WX_DECLARE_LIST(wxSoundBackendSDLQueueEntry, wxSoundBackendSDLQueue); -WX_DEFINE_LIST(wxSoundBackendSDLQueue); - - class wxSoundBackendSDLNotification : public wxEvent { public: DECLARE_DYNAMIC_CLASS(wxSoundBackendSDLNotification) wxSoundBackendSDLNotification(); - wxEvent *Clone() const { return new wxSoundBackendSDLNotification(*this); } + wxEvent *Clone() const { return new wxSoundBackendSDLNotification(*this); } }; typedef void (wxEvtHandler::*wxSoundBackendSDLNotificationFunction) @@ -71,8 +54,7 @@ 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) @@ -88,23 +70,36 @@ class wxSoundBackendSDLEvtHandler; class wxSoundBackendSDL : public wxSoundBackend { public: - wxSoundBackendSDL() - : m_initialized(false), m_playing(false), m_evtHandler(NULL) {} + wxSoundBackendSDL() + : m_initialized(false), m_playing(false), m_audioOpen(false), + m_data(NULL), m_evtHandler(NULL) {} virtual ~wxSoundBackendSDL(); - + wxString GetName() const { return _T("Simple DirectMedia Layer"); } 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); - bool PlayNextSampleInQueue(); - + void FinishedPlayback(); + + void Stop(); + bool IsPlaying() const { return m_playing; } + private: + bool OpenAudio(); + void CloseAudio(); + bool m_initialized; - bool m_playing; - wxSoundBackendSDLQueue m_queue; + bool m_playing, m_audioOpen; + // playback information: + wxSoundData *m_data; + unsigned m_pos; + SDL_AudioSpec m_spec; + bool m_loop; + wxSoundBackendSDLEvtHandler *m_evtHandler; }; @@ -118,7 +113,7 @@ private: { wxLogTrace(_T("sound"), _T("received playback status change notification")); - m_backend->PlayNextSampleInQueue(); + m_backend->FinishedPlayback(); } wxSoundBackendSDL *m_backend; @@ -131,12 +126,9 @@ END_EVENT_TABLE() wxSoundBackendSDL::~wxSoundBackendSDL() { - SDL_LockAudio(); - if (m_playing) - SDL_CloseAudio(); - SDL_UnlockAudio(); - wxDELETE(m_evtHandler); - WX_CLEAR_LIST(wxSoundBackendSDLQueue, m_queue) + Stop(); + CloseAudio(); + delete m_evtHandler; } bool wxSoundBackendSDL::IsAvailable() const @@ -161,13 +153,11 @@ extern "C" void wx_sdl_audio_callback(void *userdata, Uint8 *stream, int len) void wxSoundBackendSDL::FillAudioBuffer(Uint8 *stream, int len) { - wxSoundBackendSDLQueueEntry *e = m_queue.front(); - if (!e->m_finished) + if (m_playing) { // finished playing the sample - if (e->m_pos == e->m_data->m_dataBytes) + if (m_pos == m_data->m_dataBytes) { - e->m_finished = true; m_playing = false; wxSoundBackendSDLNotification event; m_evtHandler->AddPendingEvent(event); @@ -175,11 +165,11 @@ void wxSoundBackendSDL::FillAudioBuffer(Uint8 *stream, int len) // still something to play else { - unsigned size = ((len + e->m_pos) < e->m_data->m_dataBytes) ? + unsigned size = ((len + m_pos) < m_data->m_dataBytes) ? len : - (e->m_data->m_dataBytes - e->m_pos); - memcpy(stream, e->m_data->m_data + e->m_pos, size); - e->m_pos += size; + (m_data->m_dataBytes - m_pos); + memcpy(stream, m_data->m_data + m_pos, size); + m_pos += size; len -= size; stream += size; } @@ -188,53 +178,123 @@ void wxSoundBackendSDL::FillAudioBuffer(Uint8 *stream, int len) // the main thread to shut the playback down: if (len > 0) { - if (e->m_loop) + if (m_loop) { - e->m_pos = 0; + m_pos = 0; FillAudioBuffer(stream, len); return; } else { - memset(stream, e->m_spec.silence, len); + memset(stream, m_spec.silence, len); } } } -bool wxSoundBackendSDL::Play(wxSoundData *data, unsigned flags) +void wxSoundBackendSDL::FinishedPlayback() { - data->IncRef(); + if (!m_playing) + Stop(); +} - wxSoundBackendSDLQueueEntry *e = new wxSoundBackendSDLQueueEntry(); - e->m_data = data; - e->m_pos = 0; - e->m_loop = (flags & wxSOUND_LOOP); - e->m_finished = false; - e->m_spec.freq = data->m_samplingRate; - e->m_spec.channels = data->m_channels; - e->m_spec.silence = 0; - e->m_spec.samples = 4096; - e->m_spec.size = 0; - e->m_spec.callback = wx_sdl_audio_callback; - e->m_spec.userdata = (void*)this; - +bool wxSoundBackendSDL::OpenAudio() +{ + if (!m_audioOpen) + { + if (!m_evtHandler) + m_evtHandler = new wxSoundBackendSDLEvtHandler(this); + + m_spec.silence = 0; + m_spec.samples = 4096; + m_spec.size = 0; + m_spec.callback = wx_sdl_audio_callback; + m_spec.userdata = (void*)this; + + wxLogTrace(_T("sound"), _T("opening SDL audio...")); + if (SDL_OpenAudio(&m_spec, NULL) >= 0) + { +#if wxUSE_LOG_DEBUG + char driver[256]; + SDL_AudioDriverName(driver, 256); + wxLogTrace(_T("sound"), _T("opened audio, driver '%s'"), + wxString(driver, wxConvLocal).c_str()); +#endif + m_audioOpen = true; + return true; + } + else + { + wxString err(SDL_GetError(), wxConvLocal); + wxLogError(_("Couldn't open audio: %s"), err.c_str()); + return false; + } + } + return true; +} + +void wxSoundBackendSDL::CloseAudio() +{ + if (m_audioOpen) + { + SDL_CloseAudio(); + wxLogTrace(_T("sound"), _T("closed audio")); + m_audioOpen = false; + } +} + +bool wxSoundBackendSDL::Play(wxSoundData *data, unsigned flags, + volatile wxSoundPlaybackStatus *WXUNUSED(status)) +{ + Stop(); + + int format; if (data->m_bitsPerSample == 8) - e->m_spec.format = AUDIO_U8; + format = AUDIO_U8; else if (data->m_bitsPerSample == 16) - e->m_spec.format = AUDIO_S16LSB; + format = AUDIO_S16LSB; else return false; - m_queue.push_back(e); - wxLogTrace(_T("sound"), _T("queued sample %p for playback"), e); + bool needsOpen = true; + if (m_audioOpen) + { + if (format == m_spec.format && + m_spec.freq == (int)data->m_samplingRate && + m_spec.channels == data->m_channels) + { + needsOpen = false; + } + else + { + CloseAudio(); + } + } - if (!PlayNextSampleInQueue()) - return false; + if (needsOpen) + { + m_spec.format = format; + m_spec.freq = data->m_samplingRate; + m_spec.channels = data->m_channels; + if (!OpenAudio()) + 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); + + // wait until playback finishes if called in sync mode: if (!(flags & wxSOUND_ASYNC)) { wxLogTrace(_T("sound"), _T("waiting for sample to finish")); - while (!m_queue.empty() && m_queue.front() == e && !e->m_finished) + while (m_playing && m_data == data) { #if wxUSE_THREADS // give the playback thread a chance to add event to pending @@ -242,7 +302,7 @@ bool wxSoundBackendSDL::Play(wxSoundData *data, unsigned flags) if (wxThread::IsMain()) wxMutexGuiLeave(); #endif - wxUsleep(10); + wxMilliSleep(10); #if wxUSE_THREADS if (wxThread::IsMain()) wxMutexGuiEnter(); @@ -250,80 +310,21 @@ bool wxSoundBackendSDL::Play(wxSoundData *data, unsigned flags) } wxLogTrace(_T("sound"), _T("sample finished")); } - + return true; } - -bool wxSoundBackendSDL::PlayNextSampleInQueue() -{ - bool status = true; +void wxSoundBackendSDL::Stop() +{ SDL_LockAudio(); - - if (!m_evtHandler) - m_evtHandler = new wxSoundBackendSDLEvtHandler(this); - - if (!m_playing && !m_queue.empty()) + SDL_PauseAudio(1); + m_playing = false; + if (m_data) { - bool needsReopen = true; - // shut down playing of finished sound: - wxSoundBackendSDLQueueEntry *e = m_queue.front(); - if (e->m_finished) - { - SDL_PauseAudio(1); - e->m_data->DecRef(); - m_queue.pop_front(); - if (!m_queue.empty() && - e->m_spec.freq == m_queue.front()->m_spec.freq && - e->m_spec.channels == m_queue.front()->m_spec.channels && - e->m_spec.format == m_queue.front()->m_spec.format) - { - needsReopen = false; - } - else - { - SDL_CloseAudio(); - wxLogTrace(_T("sound"), _T("closed audio")); - } - delete e; - } - // start playing another one: - if (!m_queue.empty()) - { - wxSoundBackendSDLQueueEntry *e = m_queue.front(); - m_playing = true; - wxLogTrace(_T("sound"), _T("playing sample %p"), e); - - if (needsReopen) - { - wxLogTrace(_T("sound"), _T("opening SDL audio...")); - status = (SDL_OpenAudio(&e->m_spec, NULL) >= 0); - if (status) - { -#if wxUSE_LOG_DEBUG - char driver[256]; - SDL_AudioDriverName(driver, 256); - wxLogTrace(_T("sound"), _T("opened audio, driver '%s'"), - wxString(driver, wxConvLocal).c_str()); -#endif - SDL_PauseAudio(0); - } - else - { - wxString err(SDL_GetError(), wxConvLocal); - wxLogError(_("Couldn't open audio: %s"), err.c_str()); - m_queue.pop_front(); - delete e; - } - } - else - SDL_PauseAudio(0); - } + m_data->DecRef(); + m_data = NULL; } - SDL_UnlockAudio(); - - return status; } extern "C" wxSoundBackend *wxCreateSoundBackendSDL() @@ -331,4 +332,4 @@ extern "C" wxSoundBackend *wxCreateSoundBackendSDL() return new wxSoundBackendSDL(); } -#endif // wxUSE_WAVE && wxUSE_LIBSDL +#endif // wxUSE_SOUND && wxUSE_LIBSDL