| 35 | } |
| 36 | |
| 37 | unsigned int BusInstance::getAudio(float *aBuffer, unsigned int aSamplesToRead, unsigned int aBufferSize) |
| 38 | { |
| 39 | int handle = mParent->mChannelHandle; |
| 40 | if (handle == 0) |
| 41 | { |
| 42 | // Avoid reuse of scratch data if this bus hasn't played anything yet |
| 43 | unsigned int i; |
| 44 | for (i = 0; i < aBufferSize * mChannels; i++) |
| 45 | aBuffer[i] = 0; |
| 46 | return aSamplesToRead; |
| 47 | } |
| 48 | |
| 49 | Soloud *s = mParent->mSoloud; |
| 50 | if (s->mScratchNeeded != mScratchSize) |
| 51 | { |
| 52 | mScratchSize = s->mScratchNeeded; |
| 53 | mScratch.init(mScratchSize * MAX_CHANNELS); |
| 54 | } |
| 55 | |
| 56 | s->mixBus(aBuffer, aSamplesToRead, aBufferSize, mScratch.mData, handle, mSamplerate, mChannels); |
| 57 | |
| 58 | int i; |
| 59 | if (mParent->mFlags & AudioSource::VISUALIZATION_DATA) |
| 60 | { |
| 61 | for (i = 0; i < MAX_CHANNELS; i++) |
| 62 | mVisualizationChannelVolume[i] = 0; |
| 63 | |
| 64 | if (aSamplesToRead > 255) |
| 65 | { |
| 66 | for (i = 0; i < 256; i++) |
| 67 | { |
| 68 | int j; |
| 69 | mVisualizationWaveData[i] = 0; |
| 70 | for (j = 0; j < (signed)mChannels; j++) |
| 71 | { |
| 72 | float sample = aBuffer[i + aBufferSize * j]; |
| 73 | float absvol = (float)fabs(sample); |
| 74 | if (absvol > mVisualizationChannelVolume[j]) |
| 75 | mVisualizationChannelVolume[j] = absvol; |
| 76 | mVisualizationWaveData[i] += sample; |
| 77 | } |
| 78 | } |
| 79 | } |
| 80 | else |
| 81 | { |
| 82 | // Very unlikely failsafe branch |
| 83 | for (i = 0; i < 256; i++) |
| 84 | { |
| 85 | int j; |
| 86 | mVisualizationWaveData[i] = 0; |
| 87 | for (j = 0; j < (signed)mChannels; j++) |
| 88 | { |
| 89 | float sample = aBuffer[(i % aSamplesToRead) + aBufferSize * j]; |
| 90 | float absvol = (float)fabs(sample); |
| 91 | if (absvol > mVisualizationChannelVolume[j]) |
| 92 | mVisualizationChannelVolume[j] = absvol; |
| 93 | mVisualizationWaveData[i] += sample; |
| 94 | } |