equal
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inserted
replaced
217 TInt CChannelAndSampleRateConvert::SizeOfUpsampleBuffer(TInt aBufferLength) |
217 TInt CChannelAndSampleRateConvert::SizeOfUpsampleBuffer(TInt aBufferLength) |
218 { |
218 { |
219 TInt rawValue = aBufferLength; |
219 TInt rawValue = aBufferLength; |
220 ASSERT(iFromRate < iToRate); // should not be called otherwise |
220 ASSERT(iFromRate < iToRate); // should not be called otherwise |
221 // upsample - will generate more data. use floats to avoid extra round error |
221 // upsample - will generate more data. use floats to avoid extra round error |
222 rawValue = TInt(rawValue * TReal(iToRate) / TReal(iFromRate) + 0.5) + 4*sizeof(TInt16); // add some fudge factor just in case |
222 rawValue = TInt(rawValue * TReal(iToRate) / TReal(iFromRate) + 0.5) + 4*sizeof(TInt16); // add some buffer extra buffer |
223 rawValue = NextPowerUp(rawValue); // when upscaling always give nice power |
223 rawValue = NextPowerUp(rawValue); // when upscaling always give nice power |
224 return rawValue; |
224 return rawValue; |
225 } |
225 } |
226 |
226 |
227 // |
227 // |