| 1 | #include "streamplayer.h" |
| 2 | #include<mda/common/audio.h> |
| 3 | |
| 4 | |
| 5 | |
| 6 | const TInt KMaxVolume(256); |
| 7 | |
| 8 | LOCAL_C TInt GetSampleRate(TInt aRate) |
| 9 | { |
| 10 | switch(aRate) |
| 11 | { |
| 12 | case 8000: return TMdaAudioDataSettings::ESampleRate8000Hz; |
| 13 | case 11025: return TMdaAudioDataSettings::ESampleRate11025Hz; |
| 14 | case 12000: return TMdaAudioDataSettings::ESampleRate12000Hz; |
| 15 | case 16000: return TMdaAudioDataSettings::ESampleRate16000Hz; |
| 16 | case 22050: return TMdaAudioDataSettings::ESampleRate22050Hz; |
| 17 | case 24000: return TMdaAudioDataSettings::ESampleRate24000Hz; |
| 18 | case 32000: return TMdaAudioDataSettings::ESampleRate32000Hz; |
| 19 | case 44100: return TMdaAudioDataSettings::ESampleRate44100Hz; |
| 20 | case 48000: return TMdaAudioDataSettings::ESampleRate48000Hz; |
| 21 | case 96000: return TMdaAudioDataSettings::ESampleRate96000Hz; |
| 22 | case 64000: return TMdaAudioDataSettings::ESampleRate64000Hz; |
| 23 | } |
| 24 | return KErrNotFound; |
| 25 | } |
| 26 | |
| 27 | LOCAL_C TInt GetChannels(TInt aChannels) |
| 28 | { |
| 29 | switch(aChannels) |
| 30 | { |
| 31 | case 1: return TMdaAudioDataSettings::EChannelsMono; |
| 32 | case 2: return TMdaAudioDataSettings::EChannelsStereo; |
| 33 | } |
| 34 | return KErrNotFound; |
| 35 | } |
| 36 | |
| 37 | TInt CStreamPlayer::ClosestSupportedRate(TInt aRate) |
| 38 | { |
| 39 | if(aRate > 96000) |
| 40 | return 96000; |
| 41 | TInt rate = aRate; |
| 42 | while(GetSampleRate(rate) == KErrNotFound) |
| 43 | { |
| 44 | ++rate; |
| 45 | } |
| 46 | return rate; |
| 47 | } |
| 48 | |
| 49 | CStreamPlayer::CStreamPlayer(MStreamProvider& aProvider, MStreamObs& aObs) : |
| 50 | iProvider(aProvider), iObs(aObs), iVolume(KMaxVolume) |
| 51 | { |
| 52 | } |
| 53 | |
| 54 | CStreamPlayer::~CStreamPlayer() |
| 55 | { |
| 56 | iState |= EDied; |
| 57 | if(iState & EInited) |
| 58 | Close(); |
| 59 | User::After(100000); //wait buffer to be flushed |
| 60 | ASSERT(iPtr.Length() == 0); |
| 61 | delete iStream; |
| 62 | } |
| 63 | |
| 64 | |
| 65 | void CStreamPlayer::ConstructL() |
| 66 | { |
| 67 | iStream = CMdaAudioOutputStream::NewL(*this, EMdaPriorityMax); |
| 68 | iSilence.SetMax(); |
| 69 | iSilence.FillZ(); |
| 70 | } |
| 71 | |
| 72 | |
| 73 | TInt CStreamPlayer::OpenStream(TInt aRate, TInt aChannels, TUint32 aType) |
| 74 | { |
| 75 | Close(); |
| 76 | |
| 77 | iType = aType; |
| 78 | |
| 79 | iRate = GetSampleRate(aRate); |
| 80 | if(iRate == KErrNotFound) |
| 81 | return KErrNotSupported; |
| 82 | |
| 83 | iChannels = GetChannels(aChannels); |
| 84 | if(iChannels == KErrNotFound) |
| 85 | return KErrNotSupported; |
| 86 | |
| 87 | Open(); |
| 88 | |
| 89 | return KErrNone; |
| 90 | } |
| 91 | |
| 92 | |
| 93 | TInt CStreamPlayer::MaxVolume() const |
| 94 | { |
| 95 | return KMaxVolume; |
| 96 | } |
| 97 | |
| 98 | void CStreamPlayer::SetVolume(TInt aNew) |
| 99 | { |
| 100 | |
| 101 | const TInt maxi = MaxVolume(); |
| 102 | if(aNew > maxi) |
| 103 | return; |
| 104 | if(aNew < 0) |
| 105 | return; |
| 106 | |
| 107 | iVolume = aNew; |
| 108 | |
| 109 | iState |= EVolumeChange; |
| 110 | } |
| 111 | |
| 112 | TInt CStreamPlayer::Volume() const |
| 113 | { |
| 114 | return iVolume; |
| 115 | } |
| 116 | |
| 117 | void CStreamPlayer::Open() |
| 118 | { |
| 119 | TMdaAudioDataSettings audioSettings; |
| 120 | audioSettings.Query(); |
| 121 | audioSettings.iCaps = TMdaAudioDataSettings::ERealTime | |
| 122 | TMdaAudioDataSettings::ESampleRateFixed; |
| 123 | audioSettings.iSampleRate = iRate; |
| 124 | audioSettings.iChannels = iChannels; |
| 125 | audioSettings.iFlags = TMdaAudioDataSettings::ENoNetworkRouting; |
| 126 | audioSettings.iVolume = 0; |
| 127 | |
| 128 | iState &= ~EStopped; |
| 129 | iStream->Open(&audioSettings); |
| 130 | } |
| 131 | |
| 132 | void CStreamPlayer::Stop() |
| 133 | { |
| 134 | if(iState & (EStarted | EInited)) |
| 135 | { |
| 136 | Close(); |
| 137 | iState |= EStopped; |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | void CStreamPlayer::Start() |
| 142 | { |
| 143 | if(iPtr.Length() == 0) |
| 144 | { |
| 145 | iState |= EStarted; |
| 146 | if(iState & EInited) |
| 147 | { |
| 148 | Request(); |
| 149 | } |
| 150 | else if(iState & EStopped) |
| 151 | { |
| 152 | Open(); |
| 153 | } |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | void CStreamPlayer::Close() |
| 158 | { |
| 159 | iState &= ~EInited; |
| 160 | iStream->Stop(); |
| 161 | iState &= ~EStarted; |
| 162 | } |
| 163 | |
| 164 | void CStreamPlayer::Request() |
| 165 | { |
| 166 | if(iState & EInited) |
| 167 | { |
| 168 | iPtr.Set(KNullDesC8); |
| 169 | |
| 170 | if(iState & EVolumeChange) |
| 171 | { |
| 172 | const TReal newVol = iVolume; |
| 173 | const TReal newMax = MaxVolume(); |
| 174 | const TInt maxVol = iStream->MaxVolume(); |
| 175 | const TReal max = static_cast<TReal>(maxVol); |
| 176 | const TReal newvolume = (newVol * max) / newMax; |
| 177 | const TInt vol = static_cast<TReal>(newvolume); |
| 178 | iStream->SetVolume(vol); |
| 179 | iState &= ~EVolumeChange; |
| 180 | } |
| 181 | |
| 182 | if(iState & EStarted) |
| 183 | { |
| 184 | iPtr.Set(iProvider.Data()); |
| 185 | } |
| 186 | if(iPtr.Length() == 0) |
| 187 | { |
| 188 | iPtr.Set(iSilence); |
| 189 | } |
| 190 | TRAPD(err, iStream->WriteL(iPtr)); |
| 191 | if(err != KErrNone) |
| 192 | { |
| 193 | iObs.Complete(MStreamObs::EWrite, err); |
| 194 | } |
| 195 | /* else |
| 196 | { |
| 197 | iProvider.Written(iPtr.Length()); |
| 198 | }*/ |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | |
| 203 | void CStreamPlayer::SetCapsL() |
| 204 | { |
| 205 | iStream->SetDataTypeL(iType); |
| 206 | iStream->SetAudioPropertiesL(iRate, iChannels); |
| 207 | } |
| 208 | |
| 209 | void CStreamPlayer::MaoscOpenComplete(TInt aError) |
| 210 | { |
| 211 | if(aError == KErrNone) |
| 212 | { |
| 213 | TRAPD(err, SetCapsL()); |
| 214 | if(err == KErrNone) |
| 215 | { |
| 216 | iStream->SetPriority(EPriorityNormal, EMdaPriorityPreferenceTime); |
| 217 | iState |= EInited; |
| 218 | |
| 219 | |
| 220 | SetVolume(Volume()); |
| 221 | |
| 222 | if(iState & EStarted) |
| 223 | { |
| 224 | Request(); |
| 225 | } |
| 226 | |
| 227 | } |
| 228 | aError = err; |
| 229 | } |
| 230 | if(!(iState & EDied)) |
| 231 | iObs.Complete(MStreamObs::EInit, aError); |
| 232 | } |
| 233 | |
| 234 | void CStreamPlayer::MaoscBufferCopied(TInt aError, const TDesC8& /*aBuffer*/) |
| 235 | { |
| 236 | iPtr.Set(KNullDesC8); |
| 237 | if(aError == KErrNone) |
| 238 | { |
| 239 | if(iState & EInited) |
| 240 | Request(); |
| 241 | else |
| 242 | iStream->Stop(); |
| 243 | } |
| 244 | else if(!(iState & EDied)) |
| 245 | iObs.Complete(MStreamObs::EPlay, aError); |
| 246 | } |
| 247 | |
| 248 | void CStreamPlayer::MaoscPlayComplete(TInt aError) |
| 249 | { |
| 250 | iPtr.Set(KNullDesC8); |
| 251 | iState &= ~EStarted; |
| 252 | if(!(iState & EDied)) |
| 253 | iObs.Complete(MStreamObs::EClose, aError); |
| 254 | } |
| 255 | |
| 256 | TBool CStreamPlayer::Playing() const |
| 257 | { |
| 258 | return (iState & EInited) && (iState & EStarted); |
| 259 | } |
| 260 | |
| 261 | TBool CStreamPlayer::Closed() const |
| 262 | { |
| 263 | return !(iState & EInited) && !(iState & EDied); |
| 264 | } |
| 265 | |
| 266 | /* |
| 267 | void CStreamPlayer::Request() |
| 268 | { |
| 269 | SetActive(); |
| 270 | TRequestStatus* s = &iStatus; |
| 271 | User::RequestComplete(s, KErrNone); |
| 272 | } |
| 273 | // iTimer.After(0); |
| 274 | */ |
| 275 | |
| 276 | |
| 277 | |
| 278 | |
| 279 | |