Changeset 65 for trunk/Utilities/GeneratePcmWavFile/GeneratePcmWavFile.cpp

Timestamp:

May 22, 2012, 11:31:40 AM (11 years ago)

Author:

roman

Message:

 

File:

• trunk/Utilities/GeneratePcmWavFile/GeneratePcmWavFile.cpp (modified) (1 diff)

trunk/Utilities/GeneratePcmWavFile/GeneratePcmWavFile.cpp

@@ -239 +239 @@
                                                 for(SIZE_T nIndex = 0; nIndex < nDataSize; nIndex += pWaveFormatEx->nBlockAlign, nSampleIndex++)
                                                 {
+                                                        #pragma region Per-channel Frequencies and Amplitudes
+                                                        if(FALSE)
+                                                        {
+                                                                const DOUBLE pfSignalFrequencies[5] = { 1000, 1000, 1000, 1000, 1000 };
+                                                                const DOUBLE pfSignalAmplitudes[5] = { m_fSignalAmplitude, 0, 0, 0, 0 };
+                                                                SHORT* pnSampleData = (SHORT*) (Properties.pbBuffer + nIndex);
+                                                                for(WORD nChannelIndex = 0; nChannelIndex < pWaveFormatEx->nChannels; nChannelIndex++)
+                                                                {
+                                                                        const DOUBLE fSignalPeriod = (DOUBLE) pWaveFormatEx->nSamplesPerSec / pfSignalFrequencies[nChannelIndex];
+                                                                        const DOUBLE fSignalAmplitude = pfSignalAmplitudes[nChannelIndex];
+                                                                        const SHORT nValue = (SHORT) (fSignalAmplitude * sin(2 * M_PI * (ThreadContext.m_nCurrentSampleIndex + nSampleIndex) / fSignalPeriod));
+                                                                        pnSampleData[nChannelIndex] = nValue;
+                                                                }
+                                                                continue;
+                                                        }
+                                                        #pragma endregion
+                                                        #pragma region Stream Time Coefficients
+                                                        #if TRUE && FALSE
+                                                        {
+                                                                COMPILER_MESSAGE("Every 170 seconds: 50 seconds 1.0, 70 seconds 0.0, 50 seconds 1.0");
+                                                                #pragma region Factor
+                                                                REFERENCE_TIME nTime = ThreadContext.m_nMediaSampleTime + nIndex * (1000 * 10000i64) / pWaveFormatEx->nAvgBytesPerSec;
+                                                                nTime /= 1000 * 10000i64;
+                                                                // NOTE: Every 170 seconds: 50 seconds 1.0, 70 seconds 0.0, 50 seconds 1.0
+                                                                nTime %= 170;
+                                                                const DOUBLE fTimeFactor = (nTime < 50 || nTime >= 120) ? 1.0 : (1.0 / 256);
+                                                                #pragma endregion
+                                                                const SHORT nValue = (SHORT) (m_fSignalAmplitude * sin(2 * M_PI * (ThreadContext.m_nCurrentSampleIndex + nSampleIndex) / m_fSignalPeriod));
+                                                                SHORT* pnSampleData = (SHORT*) (Properties.pbBuffer + nIndex);
+                                                                for(WORD nChannelIndex = 0; nChannelIndex < pWaveFormatEx->nChannels; nChannelIndex++)
+                                                                        pnSampleData[nChannelIndex] = (SHORT) (fTimeFactor * nValue);
+                                                                continue;
+                                                        }
+                                                        #endif // TRUE
+                                                        #pragma endregion
                                                         const SHORT nValue = (SHORT) (m_fSignalAmplitude * sin(2 * M_PI * (ThreadContext.m_nCurrentSampleIndex + nSampleIndex) / m_fSignalPeriod));
                                                         SHORT* pnSampleData = (SHORT*) (Properties.pbBuffer + nIndex);