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#include "streamplayer.h"
#include<mda/common/audio.h>
const TInt KMaxVolume(256);
LOCAL_C TInt GetSampleRate(TInt aRate)
{
switch(aRate)
{
case 8000: return TMdaAudioDataSettings::ESampleRate8000Hz;
case 11025: return TMdaAudioDataSettings::ESampleRate11025Hz;
case 12000: return TMdaAudioDataSettings::ESampleRate12000Hz;
case 16000: return TMdaAudioDataSettings::ESampleRate16000Hz;
case 22050: return TMdaAudioDataSettings::ESampleRate22050Hz;
case 24000: return TMdaAudioDataSettings::ESampleRate24000Hz;
case 32000: return TMdaAudioDataSettings::ESampleRate32000Hz;
case 44100: return TMdaAudioDataSettings::ESampleRate44100Hz;
case 48000: return TMdaAudioDataSettings::ESampleRate48000Hz;
case 96000: return TMdaAudioDataSettings::ESampleRate96000Hz;
case 64000: return TMdaAudioDataSettings::ESampleRate64000Hz;
}
return KErrNotFound;
}
LOCAL_C TInt GetChannels(TInt aChannels)
{
switch(aChannels)
{
case 1: return TMdaAudioDataSettings::EChannelsMono;
case 2: return TMdaAudioDataSettings::EChannelsStereo;
}
return KErrNotFound;
}
TInt CStreamPlayer::ClosestSupportedRate(TInt aRate)
{
if(aRate > 96000)
return 96000;
TInt rate = aRate;
while(GetSampleRate(rate) == KErrNotFound)
{
++rate;
}
return rate;
}
CStreamPlayer::CStreamPlayer(MStreamProvider& aProvider, MStreamObs& aObs) :
iProvider(aProvider), iObs(aObs), iVolume(KMaxVolume)
{
}
CStreamPlayer::~CStreamPlayer()
{
iState |= EDied;
if(iState & EInited)
Close();
User::After(100000); //wait buffer to be flushed
ASSERT(iPtr.Length() == 0);
delete iStream;
}
void CStreamPlayer::ConstructL()
{
iStream = CMdaAudioOutputStream::NewL(*this, EMdaPriorityMax);
iSilence.SetMax();
iSilence.FillZ();
}
TInt CStreamPlayer::OpenStream(TInt aRate, TInt aChannels, TUint32 aType)
{
Close();
iType = aType;
iRate = GetSampleRate(aRate);
if(iRate == KErrNotFound)
return KErrNotSupported;
iChannels = GetChannels(aChannels);
if(iChannels == KErrNotFound)
return KErrNotSupported;
Open();
return KErrNone;
}
TInt CStreamPlayer::MaxVolume() const
{
return KMaxVolume;
}
void CStreamPlayer::SetVolume(TInt aNew)
{
const TInt maxi = MaxVolume();
if(aNew > maxi)
return;
if(aNew < 0)
return;
iVolume = aNew;
iState |= EVolumeChange;
}
TInt CStreamPlayer::Volume() const
{
return iVolume;
}
void CStreamPlayer::Open()
{
TMdaAudioDataSettings audioSettings;
audioSettings.Query();
audioSettings.iCaps = TMdaAudioDataSettings::ERealTime |
TMdaAudioDataSettings::ESampleRateFixed;
audioSettings.iSampleRate = iRate;
audioSettings.iChannels = iChannels;
audioSettings.iFlags = TMdaAudioDataSettings::ENoNetworkRouting;
audioSettings.iVolume = 0;
iState &= ~EStopped;
iStream->Open(&audioSettings);
}
void CStreamPlayer::Stop()
{
if(iState & (EStarted | EInited))
{
Close();
iState |= EStopped;
}
}
void CStreamPlayer::Start()
{
if(iPtr.Length() == 0)
{
iState |= EStarted;
if(iState & EInited)
{
Request();
}
else if(iState & EStopped)
{
Open();
}
}
}
void CStreamPlayer::Close()
{
iState &= ~EInited;
iStream->Stop();
iState &= ~EStarted;
}
void CStreamPlayer::Request()
{
if(iState & EInited)
{
iPtr.Set(KNullDesC8);
if(iState & EVolumeChange)
{
const TReal newVol = iVolume;
const TReal newMax = MaxVolume();
const TInt maxVol = iStream->MaxVolume();
const TReal max = static_cast<TReal>(maxVol);
const TReal newvolume = (newVol * max) / newMax;
const TInt vol = static_cast<TReal>(newvolume);
iStream->SetVolume(vol);
iState &= ~EVolumeChange;
}
if(iState & EStarted)
{
iPtr.Set(iProvider.Data());
}
if(iPtr.Length() == 0)
{
iPtr.Set(iSilence);
}
TRAPD(err, iStream->WriteL(iPtr));
if(err != KErrNone)
{
iObs.Complete(MStreamObs::EWrite, err);
}
/* else
{
iProvider.Written(iPtr.Length());
}*/
}
}
void CStreamPlayer::SetCapsL()
{
iStream->SetDataTypeL(iType);
iStream->SetAudioPropertiesL(iRate, iChannels);
}
void CStreamPlayer::MaoscOpenComplete(TInt aError)
{
if(aError == KErrNone)
{
TRAPD(err, SetCapsL());
if(err == KErrNone)
{
iStream->SetPriority(EPriorityNormal, EMdaPriorityPreferenceTime);
iState |= EInited;
SetVolume(Volume());
if(iState & EStarted)
{
Request();
}
}
aError = err;
}
if(!(iState & EDied))
iObs.Complete(MStreamObs::EInit, aError);
}
void CStreamPlayer::MaoscBufferCopied(TInt aError, const TDesC8& /*aBuffer*/)
{
iPtr.Set(KNullDesC8);
if(aError == KErrNone)
{
if(iState & EInited)
Request();
else
iStream->Stop();
}
else if(!(iState & EDied))
iObs.Complete(MStreamObs::EPlay, aError);
}
void CStreamPlayer::MaoscPlayComplete(TInt aError)
{
iPtr.Set(KNullDesC8);
iState &= ~EStarted;
if(!(iState & EDied))
iObs.Complete(MStreamObs::EClose, aError);
}
TBool CStreamPlayer::Playing() const
{
return (iState & EInited) && (iState & EStarted);
}
TBool CStreamPlayer::Closed() const
{
return !(iState & EInited) && !(iState & EDied);
}
/*
void CStreamPlayer::Request()
{
SetActive();
TRequestStatus* s = &iStatus;
User::RequestComplete(s, KErrNone);
}
// iTimer.After(0);
*/
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