public bool Read(BinaryReader br, int numChannels, int bitsPerSample)
{
subChunk2Id = br.ReadBytes(4);
if (subChunk2Id[0] != 'd' || subChunk2Id[1] != 'a' || subChunk2Id[2] != 't' || subChunk2Id[3] != 'a')
{
Console.WriteLine("E: DataSubChunk.subChunk2Id mismatch. \"{0}{1}{2}{3}\" should be \"data\"",
(char)subChunk2Id[0], (char)subChunk2Id[1], (char)subChunk2Id[2], (char)subChunk2Id[3]);
return(false);
}
subChunk2Size = br.ReadUInt32();
Console.WriteLine("D: subChunk2Size={0}", subChunk2Size);
if (0x80000000 <= subChunk2Size)
{
Console.WriteLine("E: file too large to handle. {0} bytes", subChunk2Size);
return(false);
}
int numSamples = (int)(subChunk2Size / (bitsPerSample / 8) / numChannels);
data = new List <PcmSamples1Channel>();
for (int i = 0; i < numChannels; ++i)
{
PcmSamples1Channel ps1 = new PcmSamples1Channel(numSamples, bitsPerSample);
data.Add(ps1);
}
for (int pos = 0; pos < numSamples; ++pos)
{
for (int ch = 0; ch < numChannels; ++ch)
{
Sample16Set(ch, pos, br.ReadInt16());
}
}
return(true);
}
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
int sampleDelay;
double w1w2VolumeRatio;
if (!SampleDelay(wavRead1, wavRead2, out sampleDelay, out w1w2VolumeRatio)) {
e.Result = false;
resultString = rm.GetString("TwoWavFilesTooDifferent");
return;
}
if (!checkBoxAutoAdjustVolumeDifference.Checked) {
w1w2VolumeRatio = 1.0;
}
int numSamples = wavRead1.NumSamples - 2 * Math.Abs(sampleDelay);
if (wavRead2.NumSamples < wavRead1.NumSamples) {
numSamples = wavRead2.NumSamples - 2 * Math.Abs(sampleDelay);
}
List<PcmSamples1Channel> samples = new List<PcmSamples1Channel>();
for (int i=0; i<wavRead1.NumChannels; ++i) {
PcmSamples1Channel ps = new PcmSamples1Channel(numSamples, wavRead1.BitsPerSample);
samples.Add(ps);
}
long acc = 0;
int maxDiff = 0;
float magnitude = (float)Magnitude;
if (0 <= sampleDelay) {
for (int ch=0; ch < wavRead1.NumChannels; ++ch) {
PcmSamples1Channel ps = samples[ch];
for (int sample=0; sample < numSamples; ++sample) {
int diff = (int)(wavRead1.Sample16Get(ch, sample)
- wavRead2.Sample16Get(ch, sample + sampleDelay) * w1w2VolumeRatio);
int absDiff = Math.Abs(diff);
acc += absDiff;
if (maxDiff < absDiff) {
maxDiff = absDiff;
}
ps.Set16(sample, (short)(diff * magnitude));
}
}
} else {
// sampleDelay < 0
for (int ch=0; ch < wavRead1.NumChannels; ++ch) {
PcmSamples1Channel ps = samples[ch];
for (int sample=0; sample < numSamples; ++sample) {
int diff = (int)(wavRead1.Sample16Get(ch, sample - sampleDelay)
- wavRead2.Sample16Get(ch, sample) * w1w2VolumeRatio);
int absDiff = Math.Abs(diff);
acc += absDiff;
if (maxDiff < absDiff) {
maxDiff = absDiff;
}
ps.Set16(sample, (short)(diff * magnitude));
}
}
}
if (0 == acc) {
e.Result = false;
resultString = rm.GetString("TwoWavFilesAreExactlyTheSame");
return;
}
WavData wav = new WavData();
wav.Create(wavRead1.SampleRate, wavRead1.BitsPerSample, samples);
if (0 < maxDiff) {
int maxMagnitude = 32767 / maxDiff;
resultString = string.Format(rm.GetString("DiffStatistics"),
(double)acc / wav.NumSamples, maxDiff, maxMagnitude);
Console.WriteLine(resultString);
if (32767 < maxDiff * magnitude) {
Console.WriteLine(rm.GetString("OutputFileLevelOver"), maxMagnitude);
}
}
try {
using (BinaryWriter bw = new BinaryWriter(File.Open(textBoxWrite.Text, FileMode.CreateNew))) {
wav.Write(bw);
}
} catch (Exception ex) {
resultString = ex.ToString();
e.Result = false;
}
e.Result = true;
}
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
int sampleDelay;
double w1w2VolumeRatio;
if (!SampleDelay(wavRead1, wavRead2, out sampleDelay, out w1w2VolumeRatio))
{
e.Result = false;
resultString = rm.GetString("TwoWavFilesTooDifferent");
return;
}
if (!checkBoxAutoAdjustVolumeDifference.Checked)
{
w1w2VolumeRatio = 1.0;
}
int numSamples = wavRead1.NumSamples - 2 * Math.Abs(sampleDelay);
if (wavRead2.NumSamples < wavRead1.NumSamples)
{
numSamples = wavRead2.NumSamples - 2 * Math.Abs(sampleDelay);
}
List <PcmSamples1Channel> samples = new List <PcmSamples1Channel>();
for (int i = 0; i < wavRead1.NumChannels; ++i)
{
PcmSamples1Channel ps = new PcmSamples1Channel(numSamples, wavRead1.BitsPerSample);
samples.Add(ps);
}
long acc = 0;
int maxDiff = 0;
float magnitude = (float)Magnitude;
if (0 <= sampleDelay)
{
for (int ch = 0; ch < wavRead1.NumChannels; ++ch)
{
PcmSamples1Channel ps = samples[ch];
for (int sample = 0; sample < numSamples; ++sample)
{
int diff = (int)(wavRead1.Sample16Get(ch, sample)
- wavRead2.Sample16Get(ch, sample + sampleDelay) * w1w2VolumeRatio);
int absDiff = Math.Abs(diff);
acc += absDiff;
if (maxDiff < absDiff)
{
maxDiff = absDiff;
}
ps.Set16(sample, (short)(diff * magnitude));
}
}
}
else
{
// sampleDelay < 0
for (int ch = 0; ch < wavRead1.NumChannels; ++ch)
{
PcmSamples1Channel ps = samples[ch];
for (int sample = 0; sample < numSamples; ++sample)
{
int diff = (int)(wavRead1.Sample16Get(ch, sample - sampleDelay)
- wavRead2.Sample16Get(ch, sample) * w1w2VolumeRatio);
int absDiff = Math.Abs(diff);
acc += absDiff;
if (maxDiff < absDiff)
{
maxDiff = absDiff;
}
ps.Set16(sample, (short)(diff * magnitude));
}
}
}
if (0 == acc)
{
e.Result = false;
resultString = rm.GetString("TwoWavFilesAreExactlyTheSame");
return;
}
WavData wav = new WavData();
wav.Create(wavRead1.SampleRate, wavRead1.BitsPerSample, samples);
if (0 < maxDiff)
{
int maxMagnitude = 32767 / maxDiff;
resultString = string.Format(rm.GetString("DiffStatistics"),
(double)acc / wav.NumSamples, maxDiff, maxMagnitude);
Console.WriteLine(resultString);
if (32767 < maxDiff * magnitude)
{
Console.WriteLine(rm.GetString("OutputFileLevelOver"), maxMagnitude);
}
}
try {
using (BinaryWriter bw = new BinaryWriter(File.Open(textBoxWrite.Text, FileMode.CreateNew))) {
wav.Write(bw);
}
} catch (Exception ex) {
resultString = ex.ToString();
e.Result = false;
}
e.Result = true;
}
public bool Read(BinaryReader br, int numChannels, int bitsPerSample)
{
subChunk2Id = br.ReadBytes(4);
if (subChunk2Id[0] != 'd' || subChunk2Id[1] != 'a' || subChunk2Id[2] != 't' || subChunk2Id[3] != 'a') {
Console.WriteLine("E: DataSubChunk.subChunk2Id mismatch. \"{0}{1}{2}{3}\" should be \"data\"",
(char)subChunk2Id[0], (char)subChunk2Id[1], (char)subChunk2Id[2], (char)subChunk2Id[3]);
return false;
}
subChunk2Size = br.ReadUInt32();
Console.WriteLine("D: subChunk2Size={0}", subChunk2Size);
if (0x80000000 <= subChunk2Size) {
Console.WriteLine("E: file too large to handle. {0} bytes", subChunk2Size);
return false;
}
int numSamples = (int)(subChunk2Size / (bitsPerSample / 8) / numChannels);
data = new List<PcmSamples1Channel>();
for (int i=0; i < numChannels; ++i) {
PcmSamples1Channel ps1 = new PcmSamples1Channel(numSamples, bitsPerSample);
data.Add(ps1);
}
for (int pos=0; pos < numSamples; ++pos) {
for (int ch=0; ch < numChannels; ++ch) {
Sample16Set(ch, pos, br.ReadInt16());
}
}
return true;
}
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
int sampleDelay;
double w1w2VolumeRatio;
if (!SampleDelay(wavRead1, wavRead2, out sampleDelay, out w1w2VolumeRatio)) {
e.Result = false;
resultString = rm.GetString("TwoWavFilesTooDifferent");
return;
}
int numSamples = wavRead1.NumSamples - 2 * Math.Abs(sampleDelay);
if (wavRead2.NumSamples < wavRead1.NumSamples) {
numSamples = wavRead2.NumSamples - 2 * Math.Abs(sampleDelay);
}
List<PcmSamples1Channel> samples1 = new List<PcmSamples1Channel>();
for (int i=0; i < wavRead1.NumChannels; ++i) {
PcmSamples1Channel ps = new PcmSamples1Channel(numSamples, wavRead1.BitsPerSample);
samples1.Add(ps);
}
List<PcmSamples1Channel> samples2 = new List<PcmSamples1Channel>();
for (int i=0; i < wavRead2.NumChannels; ++i) {
PcmSamples1Channel ps = new PcmSamples1Channel(numSamples, wavRead2.BitsPerSample);
samples2.Add(ps);
}
long acc = 0;
int maxDiff = 0;
int maxDiffPos = 0;
double maxDiffRatio = 0;
if (0 <= sampleDelay) {
for (int ch=0; ch < wavRead1.NumChannels; ++ch) {
PcmSamples1Channel ps1 = samples1[ch];
PcmSamples1Channel ps2 = samples2[ch];
for (int sample=0; sample < numSamples; ++sample) {
int diff = (int)(wavRead1.Sample16Get(ch, sample)
- wavRead2.Sample16Get(ch, sample + sampleDelay));
int absDiff = Math.Abs(diff);
acc += absDiff;
if (maxDiff < absDiff) {
maxDiff = absDiff;
maxDiffRatio = (double)wavRead1.Sample16Get(ch, sample) /
wavRead2.Sample16Get(ch, sample + sampleDelay);
maxDiffPos = sample;
}
ps1.Set16(sample, wavRead1.Sample16Get(ch, sample));
ps2.Set16(sample, wavRead2.Sample16Get(ch, sample + sampleDelay));
}
}
} else {
// sampleDelay < 0
for (int ch=0; ch < wavRead1.NumChannels; ++ch) {
PcmSamples1Channel ps1 = samples1[ch];
PcmSamples1Channel ps2 = samples2[ch];
for (int sample=0; sample < numSamples; ++sample) {
int diff = (int)(wavRead1.Sample16Get(ch, sample - sampleDelay)
- wavRead2.Sample16Get(ch, sample));
int absDiff = Math.Abs(diff);
acc += absDiff;
if (maxDiff < absDiff) {
maxDiff = absDiff;
maxDiffRatio = (double)wavRead1.Sample16Get(ch, sample) /
wavRead2.Sample16Get(ch, sample + sampleDelay);
maxDiffPos = sample;
}
ps1.Set16(sample, wavRead1.Sample16Get(ch, sample - sampleDelay));
ps2.Set16(sample, wavRead2.Sample16Get(ch, sample));
}
}
}
if (0 == acc) {
e.Result = false;
resultString = rm.GetString("TwoWavFilesAreExactlyTheSame");
return;
}
if (0 < maxDiff) {
int maxMagnitude = 32767 / maxDiff;
resultString = string.Format(rm.GetString("DiffStatistics"),
(double)acc / numSamples, maxDiff, maxDiffPos, (double)maxDiffPos/wavRead1.SampleRate, 20.0 * System.Math.Log10(maxDiffRatio));
Console.WriteLine(resultString);
}
if (!SaveWav(wavRead1.SampleRate, wavRead1.BitsPerSample, samples1, ReadFilePathToWriteFilePath(textBoxWavFile1.Text))) {
e.Result = false;
return;
}
if (!SaveWav(wavRead2.SampleRate, wavRead2.BitsPerSample, samples2, ReadFilePathToWriteFilePath(textBoxWavFile2.Text))) {
e.Result = false;
return;
}
e.Result = true;
}
