diff -r 000000000000 -r 951a5db380a0 videoeditorengine/audioeditorengine/resampler/src/resampler_sinc_conv_one_to_two_int16.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/videoeditorengine/audioeditorengine/resampler/src/resampler_sinc_conv_one_to_two_int16.cpp	Fri Jan 29 14:08:33 2010 +0200
@@ -0,0 +1,262 @@
+/*
+* Copyright (c) 2010 Ixonos Plc.
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - Initial contribution
+*
+* Contributors:
+* Ixonos Plc
+*
+* Description:
+*
+*/
+
+
+#include "resampler_sinc_conv_one_to_two_int16.h"
+#include "resampler_clip.h"
+#include "resampler_sinc_conv_one_to_two_tables_standard.h"
+
+#include <string.h>
+
+#include "resampler_sinc_conv_one_to_two_int16.inl"
+
+static const int LC_ZERO_CROSSINGS = RESAMPLER_ONE_TO_TWO_ZERO_CROSSINGS_STANDARD; /* Needs to be divisible by two */
+
+
+RESAMPLER_SincConvOneToTwoInt16::RESAMPLER_SincConvOneToTwoInt16(int channelCount) :
+m_memBuffers(0),
+m_scratchBuffer(0),
+m_filter(RESAMPLER_ONE_TO_TWO_FILTERS_STANDARD),
+m_channelCount(channelCount),
+m_blockSize(0),
+m_channelEnabled(0),
+m_state(0)
+{
+}
+
+
+RESAMPLER_SincConvOneToTwoInt16::~RESAMPLER_SincConvOneToTwoInt16()
+{
+    DeInit();
+}
+
+
+bool RESAMPLER_SincConvOneToTwoInt16::InitInputDriven()
+{
+    return Init();
+}
+
+
+bool RESAMPLER_SincConvOneToTwoInt16::InitOutputDriven()
+{
+    return Init();
+}
+
+
+bool RESAMPLER_SincConvOneToTwoInt16::Init()
+{
+    int i(0);
+  
+    m_memBuffers = new int16 *[m_channelCount];
+    if (!m_memBuffers)
+    {
+        return false;
+    }
+    
+    for (i = 0; i < m_channelCount; i++) 
+    {
+        m_memBuffers[i] = 0;
+    }
+
+    m_channelCount = m_channelCount;  
+    
+    m_channelEnabled = new bool[m_channelCount];
+    if (!m_channelEnabled)
+    {
+        DeInit();
+        return false;
+    }
+    for (i = 0; i < m_channelCount; i++) 
+    {
+        m_channelEnabled[i] = true;
+    }
+
+    for (i = 0; i < m_channelCount; i++) 
+    {
+        m_memBuffers[i] = new int16[LC_ZERO_CROSSINGS * 2];
+        if (!m_memBuffers[i])
+        {
+            DeInit();
+            return false;
+        }
+        memset(m_memBuffers[i], 0, sizeof(int16) * (LC_ZERO_CROSSINGS * 2));
+    }
+
+    return true;
+}
+
+
+void RESAMPLER_SincConvOneToTwoInt16::DeInit()
+{
+    if (m_channelCount)
+    {
+        for (int i = 0; i < m_channelCount; i++)
+        {
+            delete [] m_memBuffers[i];
+        }
+        delete [] m_memBuffers;
+        delete [] m_channelEnabled;
+    }
+}
+
+
+void RESAMPLER_SincConvOneToTwoInt16::EnableChannel(int channel)
+{
+    m_channelEnabled[channel] = true;
+}
+
+
+void RESAMPLER_SincConvOneToTwoInt16::DisableChannel(int channel)
+{
+    m_channelEnabled[channel] = false;
+}
+
+
+size_t 
+RESAMPLER_SincConvOneToTwoInt16::ScratchMemoryNeedInputDriven(int maxInputBlockSize) const
+{
+    return sizeof(int16) * (LC_ZERO_CROSSINGS * 2 + maxInputBlockSize);
+}
+
+
+void 
+RESAMPLER_SincConvOneToTwoInt16::SetScratchBufferInputDriven(char *buffer)
+{
+    m_scratchBuffer = (int16 *)buffer;
+}
+
+
+int RESAMPLER_SincConvOneToTwoInt16::MaxOutputSampleCount(int inSamples) const 
+{ 
+    return 2 * inSamples; 
+}
+
+
+int RESAMPLER_SincConvOneToTwoInt16::ProcessFromInput(int16 *outputBuffers[], 
+                                                int16 *inputBuffers[], 
+                                                int inSamples)
+{
+    int outSamples(2 * inSamples + m_state);
+    return ProcessToOutput(outputBuffers, inputBuffers, outSamples);
+}
+
+
+size_t 
+RESAMPLER_SincConvOneToTwoInt16::ScratchMemoryNeedOutputDriven(int maxOutputBlockSize) const
+{
+    return ScratchMemoryNeedInputDriven((maxOutputBlockSize + 1) >> 1);
+}
+
+
+void 
+RESAMPLER_SincConvOneToTwoInt16::SetScratchBufferOutputDriven(char *buffer)
+{
+    m_scratchBuffer = (int16 *)buffer;
+}
+
+
+int RESAMPLER_SincConvOneToTwoInt16::MaxInputSampleCount(int outSamples) const 
+{ 
+    return (outSamples + 1) >> 1; 
+}
+
+
+int RESAMPLER_SincConvOneToTwoInt16::InSamplesNeeded(int outSamples)
+{
+    int inSamples( (outSamples >> 1) + (outSamples & 1) * (1 - m_state) );
+    
+    return inSamples;       
+}
+
+
+int RESAMPLER_SincConvOneToTwoInt16::ProcessToOutput(int16 *outputBuffers[], 
+                                               int16 *inputBuffers[], 
+                                               int outSamples)
+{
+    static const int FILTER_LENGTH = 2 * LC_ZERO_CROSSINGS;
+
+    int i, j, k;
+    int oldState = m_state;
+    int newState = (oldState + outSamples) & 1;
+    
+    for (i = 0; i < m_channelCount; i++) 
+    {
+        if (!m_channelEnabled[i])
+        {
+            break;
+        }
+
+        int16 *tempBuf     = m_scratchBuffer;
+        const int16 *inBuf = inputBuffers[i];
+        int16 *outBuf      = outputBuffers[i];
+
+        memcpy(m_scratchBuffer, m_memBuffers[i], FILTER_LENGTH * sizeof(int16));
+
+        // Read samples into the memory buffer and 
+        // copy samples into every second index of output buffer.
+        for (j = 0, k = oldState; k < outSamples; j++, k+=2)
+        {
+            int16 inputSample(inBuf[j]);
+            tempBuf[j + FILTER_LENGTH - 1 + oldState] = inputSample;
+            outBuf[k] = tempBuf[j + LC_ZERO_CROSSINGS - 1 + oldState];
+        }
+        int inSamples = j;
+        
+        // Do band-limited interpolation and set the result into 
+        // every second index in the output buffer. 
+#ifdef RESAMPLER_SINC_CONV_ONE_TO_TWO_DUAL_FILTERING
+        for (j = 0, k = 1 - oldState; k < outSamples; j+=2, k+=4) 
+        {
+            int newSample1(0);
+            int newSample2(0);
+
+            RESAMPLER_SincConvOneToTwoFilterDualInt16(newSample1,
+                                                newSample2,
+                                                tempBuf + LC_ZERO_CROSSINGS + j,
+                                                m_filter,
+                                                LC_ZERO_CROSSINGS);
+            // Round, shift down, and clip to 16 bits
+            outBuf[k] = (int16)RESAMPLER_Clip16((newSample1 + 16384) >> 15);
+            if (k + 2 < outSamples)
+            {
+                outBuf[k+2] = (int16)RESAMPLER_Clip16((newSample2 + 16384) >> 15);
+            }
+        }
+#else
+        for (j = 0, k = 1 - oldState; k < outSamples; j++, k+=2) 
+        {
+            int32 newSample = 
+                RESAMPLER_SincConvOneToTwoFilterInt16(tempBuf + LC_ZERO_CROSSINGS + j,
+                                                m_filter,
+                                                LC_ZERO_CROSSINGS);
+            // Round, shift down, and clip to 16 bits
+            outBuf[k] = (int16)RESAMPLER_Clip16((newSample + 16384) >> 15);
+        }
+#endif
+
+        // Copy the newest samples to the beginning of the buffer
+        memcpy(m_memBuffers[i], 
+               tempBuf + inSamples + oldState - newState, 
+               (FILTER_LENGTH - 1 + newState) * sizeof(int16));
+    }
+    
+    // Update state according to even or odd amount of output samples.
+    m_state = newState;
+    
+    return outSamples;
+}