public IntPtr ToPtr(int totalBytes)
{
IntPtr pwfx = Marshal.AllocHGlobal(totalBytes);
KernelInterop.ZeroMemory(pwfx, new IntPtr(totalBytes));
MMInterop.WAVEFORMATEX wfx = new MMInterop.WAVEFORMATEX();
wfx.cbSize = this.cbSize;
wfx.nAvgBytesPerSec = (uint)this.avgBytesPerSecond;
wfx.nBlockAlign = (ushort)this.blockAlign;
wfx.nChannels = (ushort)this.channels;
wfx.nSamplesPerSec = (uint)this.samplesPerSecond;
wfx.wBitsPerSample = (ushort)this.bitsPerSample;
wfx.wFormatTag = (ushort)this.tag;
Marshal.StructureToPtr(wfx, pwfx, false);
return(pwfx);
}
public SoundFormat(IntPtr ptr, int totalBytes)
{
MMInterop.WAVEFORMATEX wfx =
(MMInterop.WAVEFORMATEX)Marshal.PtrToStructure(ptr, typeof(MMInterop.WAVEFORMATEX));
this.avgBytesPerSecond = (int)wfx.nAvgBytesPerSec;
this.blockAlign = wfx.nBlockAlign;
this.channels = wfx.nChannels;
this.samplesPerSecond = (int)wfx.nSamplesPerSec;
this.bitsPerSample = wfx.wBitsPerSample;
this.tag = (SoundFormatTag)wfx.wFormatTag;
this.cbSize = wfx.cbSize;
int extraBytes = Math.Max(wfx.cbSize, totalBytes - fixedSize);
if (extraBytes > 0)
{
this.extra = new byte[extraBytes];
Marshal.Copy(new IntPtr(ptr.ToInt64() + fixedSize), this.extra, 0, extraBytes);
}
}
public IntPtr ToPtr()
{
int extraBytes = this.extra != null ? this.extra.Length : 0;
int totalBytes = fixedSize + extraBytes;
IntPtr pwfx = Marshal.AllocHGlobal(totalBytes);
KernelInterop.ZeroMemory(pwfx, new IntPtr(totalBytes));
MMInterop.WAVEFORMATEX wfx = new MMInterop.WAVEFORMATEX();
wfx.cbSize = this.cbSize;
wfx.nAvgBytesPerSec = (uint)this.avgBytesPerSecond;
wfx.nBlockAlign = (ushort)this.blockAlign;
wfx.nChannels = (ushort)this.channels;
wfx.nSamplesPerSec = (uint)this.samplesPerSecond;
wfx.wBitsPerSample = (ushort)this.bitsPerSample;
wfx.wFormatTag = (ushort)this.tag;
Marshal.StructureToPtr(wfx, pwfx, false);
if (extraBytes > 0)
{
Marshal.Copy(this.extra, 0, new IntPtr(pwfx.ToInt64() + fixedSize), extraBytes);
}
return(pwfx);
}
public IntPtr ToPtr(int totalBytes)
{
IntPtr pwfx = Marshal.AllocHGlobal(totalBytes);
KernelInterop.ZeroMemory(pwfx, new IntPtr(totalBytes));
MMInterop.WAVEFORMATEX wfx = new MMInterop.WAVEFORMATEX();
wfx.cbSize = this.cbSize;
wfx.nAvgBytesPerSec = (uint)this.avgBytesPerSecond;
wfx.nBlockAlign = (ushort)this.blockAlign;
wfx.nChannels = (ushort)this.channels;
wfx.nSamplesPerSec = (uint)this.samplesPerSecond;
wfx.wBitsPerSample = (ushort)this.bitsPerSample;
wfx.wFormatTag = (ushort)this.tag;
Marshal.StructureToPtr(wfx, pwfx, false);
return pwfx;
}
public IntPtr ToPtr()
{
int extraBytes = this.extra != null ? this.extra.Length : 0;
int totalBytes = fixedSize + extraBytes;
IntPtr pwfx = Marshal.AllocHGlobal(totalBytes);
KernelInterop.ZeroMemory(pwfx, new IntPtr(totalBytes));
MMInterop.WAVEFORMATEX wfx = new MMInterop.WAVEFORMATEX();
wfx.cbSize = this.cbSize;
wfx.nAvgBytesPerSec = (uint)this.avgBytesPerSecond;
wfx.nBlockAlign = (ushort)this.blockAlign;
wfx.nChannels = (ushort)this.channels;
wfx.nSamplesPerSec = (uint)this.samplesPerSecond;
wfx.wBitsPerSample = (ushort)this.bitsPerSample;
wfx.wFormatTag = (ushort)this.tag;
Marshal.StructureToPtr(wfx, pwfx, false);
if (extraBytes > 0) {
Marshal.Copy(this.extra, 0, new IntPtr(pwfx.ToInt64() + fixedSize), extraBytes);
}
return pwfx;
}
