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Diffstat (limited to 'distrib/sdl-1.2.15/src/audio/symbian/SDL_epocaudio.cpp')
| -rw-r--r-- | distrib/sdl-1.2.15/src/audio/symbian/SDL_epocaudio.cpp | 614 |
1 files changed, 614 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/src/audio/symbian/SDL_epocaudio.cpp b/distrib/sdl-1.2.15/src/audio/symbian/SDL_epocaudio.cpp new file mode 100644 index 0000000..72a4eaf --- /dev/null +++ b/distrib/sdl-1.2.15/src/audio/symbian/SDL_epocaudio.cpp @@ -0,0 +1,614 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2012 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, write to the Free + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + Sam Lantinga + slouken@devolution.com +*/ + +/* + SDL_epocaudio.cpp + Epoc based SDL audio driver implementation + + Markus Mertama +*/ + +#ifdef SAVE_RCSID +static char rcsid = + "@(#) $Id: SDL_epocaudio.c,v 0.0.0.0 2001/06/19 17:19:56 hercules Exp $"; +#endif + + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <fcntl.h> +#include <signal.h> +#include <sys/time.h> +#include <sys/ioctl.h> +#include <sys/stat.h> + +#include "epoc_sdl.h" + +#include <e32hal.h> + + +extern "C" { +#include "SDL_audio.h" +#include "SDL_error.h" +#include "SDL_audiomem.h" +#include "SDL_audio_c.h" +#include "SDL_timer.h" +#include "SDL_audiodev_c.h" +} + +#include "SDL_epocaudio.h" + +#include "streamplayer.h" + + +//#define DEBUG_AUDIO + + +/* Audio driver functions */ + +static int EPOC_OpenAudio(SDL_AudioDevice *thisdevice, SDL_AudioSpec *spec); +static void EPOC_WaitAudio(SDL_AudioDevice *thisdevice); +static void EPOC_PlayAudio(SDL_AudioDevice *thisdevice); +static Uint8 *EPOC_GetAudioBuf(SDL_AudioDevice *thisdevice); +static void EPOC_CloseAudio(SDL_AudioDevice *thisdevice); +static void EPOC_ThreadInit(SDL_AudioDevice *thisdevice); + +static int Audio_Available(void); +static SDL_AudioDevice *Audio_CreateDevice(int devindex); +static void Audio_DeleteDevice(SDL_AudioDevice *device); + + +//void sos_adump(SDL_AudioDevice* thisdevice, void* data, int len); + +#ifdef __WINS__ +#define DODUMP +#endif + +#ifdef DODUMP +NONSHARABLE_CLASS(TDump) + { + public: + TInt Open(); + void Close(); + void Dump(const TDesC8& aDes); + private: + RFile iFile; + RFs iFs; + }; + +TInt TDump::Open() + { + TInt err = iFs.Connect(); + if(err == KErrNone) + { +#ifdef __WINS__ +_LIT(target, "C:\\sdlau.raw"); +#else +_LIT(target, "E:\\sdlau.raw"); +#endif + err = iFile.Replace(iFs, target, EFileWrite); + } + return err; + } +void TDump::Close() + { + iFile.Close(); + iFs.Close(); + } +void TDump::Dump(const TDesC8& aDes) + { + iFile.Write(aDes); + } +#endif + + +NONSHARABLE_CLASS(CSimpleWait) : public CTimer + { + public: + void Wait(TTimeIntervalMicroSeconds32 aWait); + static CSimpleWait* NewL(); + private: + CSimpleWait(); + void RunL(); + }; + + +CSimpleWait* CSimpleWait::NewL() + { + CSimpleWait* wait = new (ELeave) CSimpleWait(); + CleanupStack::PushL(wait); + wait->ConstructL(); + CleanupStack::Pop(); + return wait; + } + +void CSimpleWait::Wait(TTimeIntervalMicroSeconds32 aWait) + { + After(aWait); + CActiveScheduler::Start(); + } + +CSimpleWait::CSimpleWait() : CTimer(CActive::EPriorityStandard) + { + CActiveScheduler::Add(this); + } + +void CSimpleWait::RunL() + { + CActiveScheduler::Stop(); + } + +const TInt KAudioBuffers(2); + + +NONSHARABLE_CLASS(CEpocAudio) : public CBase, public MStreamObs, public MStreamProvider + { + public: + static void* NewL(TInt BufferSize, TInt aFill); + inline static CEpocAudio& Current(SDL_AudioDevice* thisdevice); + + static void Free(SDL_AudioDevice* thisdevice); + + void Wait(); + void Play(); + // void SetBuffer(const TDesC8& aBuffer); + void ThreadInitL(TAny* aDevice); + void Open(TInt iRate, TInt iChannels, TUint32 aType, TInt aBytes); + ~CEpocAudio(); + TUint8* Buffer(); + TBool SetPause(TBool aPause); + #ifdef DODUMP + void Dump(const TDesC8& aBuf) {iDump.Dump(aBuf);} + #endif + private: + CEpocAudio(TInt aBufferSize); + void Complete(TInt aState, TInt aError); + TPtrC8 Data(); + void ConstructL(TInt aFill); + private: + TInt iBufferSize; + CStreamPlayer* iPlayer; + TInt iBufferRate; + TInt iRate; + TInt iChannels; + TUint32 iType; + TInt iPosition; + TThreadId iTid; + TUint8* iAudioPtr; + TUint8* iBuffer; + // TTimeIntervalMicroSeconds iStart; + TTime iStart; + TInt iTune; + CSimpleWait* iWait; + #ifdef DODUMP + TDump iDump; + #endif + }; + +inline CEpocAudio& CEpocAudio::Current(SDL_AudioDevice* thisdevice) + { + return *static_cast<CEpocAudio*>((void*)thisdevice->hidden); + } + +/* + +TBool EndSc(TAny*) + { + CActiveScheduler::Stop(); + } + +LOCAL_C void CleanScL() + { + CIdle* d = CIdle::NewLC(CActive:::EPriorityIdle); + d->Start(TCallBack(EndSc)); + CActiveScheduler::Start(); + + } +*/ + +void CEpocAudio::Free(SDL_AudioDevice* thisdevice) + { + CEpocAudio* ea = static_cast<CEpocAudio*>((void*)thisdevice->hidden); + if(ea) + { + ASSERT(ea->iTid == RThread().Id()); + delete ea; + thisdevice->hidden = NULL; + + CActiveScheduler* as = CActiveScheduler::Current(); + ASSERT(as->StackDepth() == 0); + delete as; + CActiveScheduler::Install(NULL); + } + ASSERT(thisdevice->hidden == NULL); + } + +CEpocAudio::CEpocAudio(TInt aBufferSize) : iBufferSize(aBufferSize), iPosition(-1) + { + } + +void* CEpocAudio::NewL(TInt aBufferSize, TInt aFill) + { + CEpocAudio* eAudioLib = new (ELeave) CEpocAudio(aBufferSize); + CleanupStack::PushL(eAudioLib); + eAudioLib->ConstructL(aFill); + CleanupStack::Pop(); + return eAudioLib; + } + +void CEpocAudio::ConstructL(TInt aFill) + { + iBuffer = (TUint8*) User::AllocL(KAudioBuffers * iBufferSize); + memset(iBuffer, aFill, KAudioBuffers * iBufferSize); + iAudioPtr = iBuffer; + } + + +TBool CEpocAudio::SetPause(TBool aPause) + { + if(aPause && iPosition >= 0) + { + iPosition = -1; + if(iPlayer != NULL) + iPlayer->Stop(); + } + if(!aPause && iPosition < 0) + { + iPosition = 0; + if(iPlayer != NULL) + iPlayer->Start(); + } + return iPosition < 0; + } + +void CEpocAudio::ThreadInitL(TAny* aDevice) + { + iTid = RThread().Id(); + CActiveScheduler* as = new (ELeave) CActiveScheduler(); + CActiveScheduler::Install(as); + + EpocSdlEnv::AppendCleanupItem(TSdlCleanupItem((TSdlCleanupOperation)EPOC_CloseAudio, aDevice)); + + iWait = CSimpleWait::NewL(); + + iPlayer = new (ELeave) CStreamPlayer(*this, *this); + iPlayer->ConstructL(); + iPlayer->OpenStream(iRate, iChannels, iType); + + #ifdef DODUMP + User::LeaveIfError(iDump.Open()); + #endif + } + + + +TUint8* CEpocAudio::Buffer() + { + iStart.UniversalTime(); +// iStart = iPlayer->Position(); + return iAudioPtr; + + } + +CEpocAudio::~CEpocAudio() + { + if(iWait != NULL) + iWait->Cancel(); + delete iWait; + if(iPlayer != NULL) + iPlayer->Close(); + delete iPlayer; + delete iBuffer; + } + +void CEpocAudio::Complete(TInt aState, TInt aError) + { + if(aState == MStreamObs::EClose) + { + } + if(iPlayer->Closed()) + return; + switch(aError) + { + case KErrUnderflow: + case KErrInUse: + iPlayer->Start(); + break; + case KErrAbort: + iPlayer->Open(); + } + } + + +void sos_adump(SDL_AudioDevice* thisdevice, void* data, int len) + { +#ifdef DODUMP + const TPtrC8 buf((TUint8*)data, len); + CEpocAudio::Current(thisdevice).Dump(buf); +#endif + } + +const TInt KClip(256); + +TPtrC8 CEpocAudio::Data() + { + if(iPosition < 0) + return KNullDesC8(); + + TPtrC8 data(iAudioPtr + iPosition, KClip); + +#ifdef DODUMP + iDump.Dump(data); +#endif + + iPosition += KClip; + if(iPosition >= iBufferSize) + { + +/* if(iAudioPtr == iBuffer) + iAudioPtr = iBuffer + iBufferSize; + else + iAudioPtr = iBuffer; +*/ + iAudioPtr += iBufferSize; + + if((iAudioPtr - iBuffer) >= KAudioBuffers * iBufferSize) + iAudioPtr = iBuffer; + + iPosition = -1; + if(iWait->IsActive()) + { + iWait->Cancel(); + CActiveScheduler::Stop(); + } + } + return data; + } + + + + +void CEpocAudio::Play() + { + iPosition = 0; + } + +void CEpocAudio::Wait() + { + if(iPosition >= 0 /*&& iPlayer->Playing()*/) + { + const TInt64 bufMs = TInt64(iBufferSize - KClip) * TInt64(1000000); + const TInt64 specTime = bufMs / TInt64(iRate * iChannels * 2); + iWait->After(specTime); + + CActiveScheduler::Start(); + TTime end; + end.UniversalTime(); + const TTimeIntervalMicroSeconds delta = end.MicroSecondsFrom(iStart); + + +// const TTimeIntervalMicroSeconds end = iPlayer->Position(); + + + + + const TInt diff = specTime - delta.Int64(); + + if(diff > 0 && diff < 200000) + { + User::After(diff); + } + + } + else + { + User::After(10000); +// iWait->Wait(10000); //just give some time... + } + } + +void CEpocAudio::Open(TInt aRate, TInt aChannels, TUint32 aType, TInt aBytes) + { + iRate = aRate; + iChannels = aChannels; + iType = aType; + iBufferRate = iRate * iChannels * aBytes; //1/x + } + + +/* Audio driver bootstrap functions */ + +AudioBootStrap EPOCAudio_bootstrap = { + "epoc\0\0\0", + "EPOC streaming audio\0\0\0", + Audio_Available, + Audio_CreateDevice +}; + + +static SDL_AudioDevice *Audio_CreateDevice(int /*devindex*/) +{ + SDL_AudioDevice *thisdevice; + + /* Initialize all variables that we clean on shutdown */ + thisdevice = (SDL_AudioDevice *)malloc(sizeof(SDL_AudioDevice)); + if ( thisdevice ) { + memset(thisdevice, 0, (sizeof *thisdevice)); + thisdevice->hidden = NULL; /*(struct SDL_PrivateAudioData *) + malloc((sizeof thisdevice->hidden)); */ + } + if ( (thisdevice == NULL) /*|| (thisdevice->hidden == NULL) */) { + SDL_OutOfMemory(); + if ( thisdevice ) { + free(thisdevice); + } + return(0); + } +// memset(thisdevice->hidden, 0, (sizeof *thisdevice->hidden)); + + /* Set the function pointers */ + thisdevice->OpenAudio = EPOC_OpenAudio; + thisdevice->WaitAudio = EPOC_WaitAudio; + thisdevice->PlayAudio = EPOC_PlayAudio; + thisdevice->GetAudioBuf = EPOC_GetAudioBuf; + thisdevice->CloseAudio = EPOC_CloseAudio; + thisdevice->ThreadInit = EPOC_ThreadInit; + thisdevice->free = Audio_DeleteDevice; + + return thisdevice; +} + + +static void Audio_DeleteDevice(SDL_AudioDevice *device) + { + //free(device->hidden); + free(device); + } + +static int Audio_Available(void) +{ + return(1); // Audio stream modules should be always there! +} + + +static int EPOC_OpenAudio(SDL_AudioDevice *thisdevice, SDL_AudioSpec *spec) +{ + SDL_TRACE("SDL:EPOC_OpenAudio"); + + + TUint32 type = KMMFFourCCCodePCM16; + TInt bytes = 2; + + switch(spec->format) + { + case AUDIO_U16LSB: + type = KMMFFourCCCodePCMU16; + break; + case AUDIO_S16LSB: + type = KMMFFourCCCodePCM16; + break; + case AUDIO_U16MSB: + type = KMMFFourCCCodePCMU16B; + break; + case AUDIO_S16MSB: + type = KMMFFourCCCodePCM16B; + break; + //8 bit not supported! + case AUDIO_U8: + case AUDIO_S8: + default: + spec->format = AUDIO_S16LSB; + }; + + + + if(spec->channels > 2) + spec->channels = 2; + + spec->freq = CStreamPlayer::ClosestSupportedRate(spec->freq); + + + /* Allocate mixing buffer */ + const TInt buflen = spec->size;// * bytes * spec->channels; +// audiobuf = NULL; + + TRAPD(err, thisdevice->hidden = static_cast<SDL_PrivateAudioData*>(CEpocAudio::NewL(buflen, spec->silence))); + if(err != KErrNone) + return -1; + + CEpocAudio::Current(thisdevice).Open(spec->freq, spec->channels, type, bytes); + + CEpocAudio::Current(thisdevice).SetPause(ETrue); + + // isSDLAudioPaused = 1; + + thisdevice->enabled = 0; /* enable only after audio engine has been initialized!*/ + + /* We're ready to rock and roll. :-) */ + return(0); +} + + +static void EPOC_CloseAudio(SDL_AudioDevice* thisdevice) + { +#ifdef DEBUG_AUDIO + SDL_TRACE("Close audio\n"); +#endif + + CEpocAudio::Free(thisdevice); + } + + +static void EPOC_ThreadInit(SDL_AudioDevice *thisdevice) + { + SDL_TRACE("SDL:EPOC_ThreadInit"); + CEpocAudio::Current(thisdevice).ThreadInitL(thisdevice); + RThread().SetPriority(EPriorityMore); + thisdevice->enabled = 1; + } + +/* This function waits until it is possible to write a full sound buffer */ +static void EPOC_WaitAudio(SDL_AudioDevice* thisdevice) +{ +#ifdef DEBUG_AUDIO + SDL_TRACE1("wait %d audio\n", CEpocAudio::AudioLib().StreamPlayer(KSfxChannel).SyncTime()); + TInt tics = User::TickCount(); +#endif + + CEpocAudio::Current(thisdevice).Wait(); + +#ifdef DEBUG_AUDIO + TInt ntics = User::TickCount() - tics; + SDL_TRACE1("audio waited %d\n", ntics); + SDL_TRACE1("audio at %d\n", tics); +#endif +} + + + +static void EPOC_PlayAudio(SDL_AudioDevice* thisdevice) + { + if(CEpocAudio::Current(thisdevice).SetPause(SDL_GetAudioStatus() == SDL_AUDIO_PAUSED)) + SDL_Delay(500); //hold on the busy loop + else + CEpocAudio::Current(thisdevice).Play(); + +#ifdef DEBUG_AUDIO + SDL_TRACE("buffer has audio data\n"); +#endif + + +#ifdef DEBUG_AUDIO + SDL_TRACE1("Wrote %d bytes of audio data\n", buflen); +#endif +} + +static Uint8 *EPOC_GetAudioBuf(SDL_AudioDevice* thisdevice) + { + return CEpocAudio::Current(thisdevice).Buffer(); + } + + + |