| 354 | //----------------------------------------------------------------------------- |
| 355 | |
| 356 | void SFXVoice::_resetStream( U32 sampleStartPos, bool triggerUpdate ) |
| 357 | { |
| 358 | AssertFatal( mBuffer->isStreaming(), "SFXVoice::_resetStream - Not a streaming voice!" ); |
| 359 | |
| 360 | ThreadSafeRef< SFXBuffer::AsyncState > oldState = mBuffer->mAsyncState; |
| 361 | AssertFatal( oldState != NULL, |
| 362 | "SFXVoice::_resetStream() - streaming buffer must have valid async state" ); |
| 363 | |
| 364 | #ifdef DEBUG_SPEW |
| 365 | Platform::outputDebugString( "[SFXVoice] Resetting stream to %i", sampleStartPos ); |
| 366 | #endif |
| 367 | |
| 368 | // Rather than messing up the async code by adding repositioning (which |
| 369 | // further complicates synchronizing the various parts), just construct |
| 370 | // a complete new AsyncState and discard the old one. The only problem |
| 371 | // here is the stateful sound streams. We can't issue a new packet as long |
| 372 | // as we aren't sure there's no request pending, so we just clone the stream |
| 373 | // and leave the old one to the old AsyncState. |
| 374 | |
| 375 | ThreadSafeRef< SFXStream > sfxStream = oldState->mStream->getSourceStream()->clone(); |
| 376 | if( sfxStream == NULL ) |
| 377 | { |
| 378 | Con::errorf( "SFXVoice::_resetStream - could not clone SFXStream" ); |
| 379 | return; |
| 380 | } |
| 381 | |
| 382 | IPositionable< U32 >* sfxPositionable = dynamic_cast< IPositionable< U32 >* >( sfxStream.ptr() ); |
| 383 | if( !sfxPositionable ) |
| 384 | { |
| 385 | Con::errorf( "SFXVoice::_resetStream - could not seek in SFXStream" ); |
| 386 | return; |
| 387 | } |
| 388 | |
| 389 | sfxPositionable->setPosition( sampleStartPos * sfxStream->getFormat().getBytesPerSample() ); |
| 390 | |
| 391 | ThreadSafeRef< SFXInternal::SFXAsyncStream > newStream = |
| 392 | new SFXInternal::SFXAsyncStream |
| 393 | ( sfxStream, |
| 394 | true, |
| 395 | oldState->mStream->getPacketDuration() / 1000, |
| 396 | oldState->mStream->getReadAhead(), |
| 397 | oldState->mStream->isLooping() ); |
| 398 | newStream->setReadSilenceAtEnd( oldState->mStream->getReadSilenceAtEnd() ); |
| 399 | |
| 400 | AssertFatal( newStream->getPacketSize() == oldState->mStream->getPacketSize(), |
| 401 | "SFXVoice::setPosition() - packet size mismatch with new stream" ); |
| 402 | |
| 403 | ThreadSafeRef< SFXBuffer::AsyncState > newState = |
| 404 | new SFXBuffer::AsyncState( newStream ); |
| 405 | newStream->start(); |
| 406 | |
| 407 | // Switch the states. |
| 408 | |
| 409 | mOffset = sampleStartPos; |
| 410 | mBuffer->mAsyncState = newState; |
| 411 | |
| 412 | // Stop the old state from reading more data. |
| 413 |
nothing calls this directly
no test coverage detected