private void CompareRecordedData()
{
if (mState != State.RecCompleted)
{
textBoxLog.Text += Properties.Resources.msgCompareCaptureTooSmall;
textBoxLog.ScrollToEnd();
return;
}
textBoxLog.Text += Properties.Resources.msgCompareStarted;
mPcmRecorded = new PcmDataLib.PcmData();
mPcmRecorded.SetFormat(NUM_CHANNELS,
WasapiCS.SampleFormatTypeToUseBitsPerSample(mRecSampleFormat),
WasapiCS.SampleFormatTypeToValidBitsPerSample(mRecSampleFormat),
mSampleRate, PcmDataLib.PcmData.ValueRepresentationType.SInt,
mCapturedBytes / NUM_CHANNELS / (WasapiCS.SampleFormatTypeToUseBitsPerSample(mRecSampleFormat) / 8));
mPcmRecorded.SetSampleLargeArray(mCapturedPcmData);
// 開始合図位置compareStartFrameをサーチ
long compareStartFrame = -1;
switch (mRecSampleFormat)
{
case WasapiCS.SampleFormatType.Sint16:
for (long pos = 0; pos < mPcmRecorded.NumFrames; ++pos)
{
if (0x00030000 == mPcmRecorded.GetSampleValueInInt32(0, pos))
{
compareStartFrame = pos;
break;
}
}
break;
case WasapiCS.SampleFormatType.Sint24:
case WasapiCS.SampleFormatType.Sint32V24:
for (long pos = 0; pos < mPcmRecorded.NumFrames; ++pos)
{
if (0x00000300 == mPcmRecorded.GetSampleValueInInt32(0, pos))
{
compareStartFrame = pos;
break;
}
}
break;
default:
System.Diagnostics.Debug.Assert(false);
break;
}
if (compareStartFrame < 0)
{
textBoxLog.Text += Properties.Resources.msgCompareStartNotFound;
textBoxLog.ScrollToEnd();
return;
}
compareStartFrame += mPcmReady.NumFrames;
if (mPcmRecorded.NumFrames - compareStartFrame < mNumTestFrames)
{
textBoxLog.Text += Properties.Resources.msgCompareCaptureTooSmall;
textBoxLog.ScrollToEnd();
return;
}
// 送信データmPcmTestと受信データmPcmRecordedを比較
long numTestBytes = mNumTestFrames * NUM_CHANNELS
* (WasapiCS.SampleFormatTypeToValidBitsPerSample(mRecSampleFormat) / 8);
long differentBytes = 0;
for (long pos = 0; pos < mNumTestFrames; ++pos)
{
for (int ch = 0; ch < NUM_CHANNELS; ++ch)
{
if (mPcmTest.GetSampleValueInInt32(ch, pos)
!= mPcmRecorded.GetSampleValueInInt32(ch, pos + compareStartFrame))
{
++differentBytes;
}
}
}
if (0 < differentBytes)
{
textBoxLog.Text += string.Format(Properties.Resources.msgCompareDifferent,
(double)numTestBytes / 1024.0 / 1024.0, (double)numTestBytes * 8L * 0.001 * 0.001,
(double)mNumTestFrames / mSampleRate, differentBytes, mWasapiRec.GetCaptureGlitchCount());
textBoxLog.ScrollToEnd();
return;
}
else
{
textBoxLog.Text += string.Format(Properties.Resources.msgCompareIdentical,
(double)numTestBytes / 1024.0 / 1024.0, (double)numTestBytes * 8L * 0.001 * 0.001, (double)mNumTestFrames / mSampleRate);
textBoxLog.ScrollToEnd();
}
mWasapiRec.ResetCaptureGlitchCount();
}
public long GetCaptureGlitchCount()
{
return(mWasapi.GetCaptureGlitchCount());
}
private void SaveRecordedData()
{
var bytes = wasapi.GetCapturedData(mCapturedPcmData);
var nFrames = bytes / WasapiCS.SampleFormatTypeToUseBytesPerSample(mSampleFormat) / mNumChannels;
if (nFrames == 0)
{
return;
}
textBoxLog.Text += string.Format("captured frames={0} ({1:F1} seconds) glichCount={2}\r\n",
nFrames, (double)nFrames / mSamplingFrequency, wasapi.GetCaptureGlitchCount());
Microsoft.Win32.SaveFileDialog dlg = new Microsoft.Win32.SaveFileDialog();
dlg.DefaultExt = ".wav";
dlg.Filter = "WAVEファイル|*.wav";
Nullable <bool> result = dlg.ShowDialog();
if (result != true)
{
return;
}
// あとで本のサイズに戻す。
var originalSize = mCapturedPcmData.Length;
Array.Resize(ref mCapturedPcmData, (int)bytes);
mWavData = new WavData();
mWavData.Set(mNumChannels, WasapiCS.SampleFormatTypeToUseBytesPerSample(mSampleFormat) * 8, WasapiCS.SampleFormatTypeToValidBitsPerSample(mSampleFormat),
mSamplingFrequency, SampleFormatToVRT(mSampleFormat), nFrames, mCapturedPcmData);
try {
using (BinaryWriter w = new BinaryWriter(File.Open(dlg.FileName, FileMode.Create))) {
mWavData.Write(w);
textBoxLog.Text += string.Format("ファイル保存成功: {0}\r\n", dlg.FileName);
}
} catch (Exception ex) {
string s = string.Format("E: ファイル保存失敗: {0}\r\n{1}\r\n", dlg.FileName, ex);
textBoxLog.Text += s;
MessageBox.Show(s);
}
slider1.Value = 0;
label1.Content = "0/0";
Array.Resize(ref mCapturedPcmData, originalSize);
}