/// <summary>Saves the WaveFormat information structure into a binary stream</summary>
/// <param name="writer">Writer through which to write the WaveFormat structure</param>
/// <param name="waveFormat">Wave format structure to be written to the file</param>
public static void Save(BinaryWriter writer, ref WaveFormatExtensible waveFormat)
{
WaveFormatEx.Save(writer, WaveFormatExtensible.Size, ref waveFormat.FormatEx);
writer.Write((UInt16)waveFormat.ValidBitsPerSample);
writer.Write((UInt32)waveFormat.ChannelMask);
byte[] subFormatGuidBytes = waveFormat.SubFormat.ToByteArray();
writer.Write(subFormatGuidBytes, 0, 16);
}
public void TestLoadVersusSave()
{
WaveFormatEx original;
original.WaveFormat.FormatTag = 0x1A2B;
original.WaveFormat.ChannelCount = 42;
original.WaveFormat.SamplesPerSecond = 123456789;
original.WaveFormat.AverageBytesPerSecond = 987654321;
original.WaveFormat.BlockAlignment = 1928;
original.BitsPerSample = 9182;
original.ExtraInformationSize = 22222;
using (MemoryStream memoryStream = new MemoryStream()) {
{
BinaryWriter writer = new BinaryWriter(memoryStream);
WaveFormatEx.Save(writer, ref original);
}
memoryStream.Position = 0;
{
WaveFormatEx restored;
BinaryReader reader = new BinaryReader(memoryStream);
int restoredFileLength = WaveFormatEx.Load(reader, out restored);
Assert.AreEqual(WaveFormatEx.Size, restoredFileLength);
Assert.AreEqual(
original.WaveFormat.FormatTag, restored.WaveFormat.FormatTag
);
Assert.AreEqual(
original.WaveFormat.ChannelCount, restored.WaveFormat.ChannelCount
);
Assert.AreEqual(
original.WaveFormat.SamplesPerSecond, restored.WaveFormat.SamplesPerSecond
);
Assert.AreEqual(
original.WaveFormat.AverageBytesPerSecond, restored.WaveFormat.AverageBytesPerSecond
);
Assert.AreEqual(
original.WaveFormat.BlockAlignment, restored.WaveFormat.BlockAlignment
);
Assert.AreEqual(original.BitsPerSample, restored.BitsPerSample);
Assert.AreEqual(original.ExtraInformationSize, restored.ExtraInformationSize);
}
}
}
/// <summary>Write a format chunk using the WaveFormatEx structure</summary>
/// <param name="waveFormatEx">
/// Extended WaveFormat structure to write into the chunk
/// </param>
public void WriteChunk(ref WaveFormatEx waveFormatEx)
{
WaveFormatEx.Save(this.writer, ref waveFormatEx);
}
