internal static AcmDriverInfo FromDriverDetails(ACMDRIVERDETAILS details, int driverId)
{
AcmDriverInfo info = new AcmDriverInfo();
info.DriverId = driverId;
info.Flags = details.fdwSupport;
info.ShortName = details.szShortName;
info.LongName = details.szLongName;
info.Description = details.szFeatures;
info._formats = new List <AcmFormatInfo>();
IntPtr hDrv;
AcmNativeMethods.acmDriverOpen(out hDrv, driverId, 0);
ACMFORMATTAGDETAILS afdt = new ACMFORMATTAGDETAILS();
afdt.cbStruct = Marshal.SizeOf(afdt);
IntPtr pafd = Marshal.AllocHGlobal(afdt.cbStruct);
Marshal.StructureToPtr(afdt, pafd, false);
AcmNativeMethods.acmFormatTagEnum(hDrv, /*ref afdt*/ pafd, info.AcmFormatTagEnumCB, (int)hDrv, 0);
Marshal.FreeHGlobal(pafd);
AcmNativeMethods.acmDriverClose(hDrv, 0);
return(info);
}
protected override bool InitializeForWriting(Stream underlyingStream, WaveFormat2 wfIn, WaveFormat2 wfOut, bool fAppend)
{
base.InitializeForWriting(underlyingStream, wfIn, wfOut, fAppend);
MMResult mmr;
int driverId = 0;
foreach (AcmDriverInfo drvInfo in ACMSupport.SupportedDrivers)
{
foreach (AcmFormatInfo fmtInfo in drvInfo.Formats)
{
if (fmtInfo.Format == wfOut)
{
driverId = fmtInfo.DriverId;
break;
}
}
}
foreach (AcmDriverInfo drvInfo in ACMSupport.SupportedDrivers)
{
foreach (AcmFormatInfo fmtInfo in drvInfo.Formats)
{
if (fmtInfo.DriverId == driverId && fmtInfo.Format.FormatTag == wfIn.FormatTag)
{
wfIn.CopyFrom(fmtInfo.Format);
break;
}
}
}
byte[] fmtIn = wfIn.GetBytes();
byte[] fmtOut = wfOut.GetBytes();
IntPtr hDrv = IntPtr.Zero;
if (driverId != 0)
{
AcmNativeMethods.acmDriverOpen(out hDrv, driverId, 0);
}
mmr = AcmNativeMethods.acmStreamOpen(out hStreamComp, hDrv, fmtIn, fmtOut, IntPtr.Zero, 0, 0, AcmStreamOpenFlags.CALLBACK_NULL | AcmStreamOpenFlags.NONREALTIME);
hdr1 = new ACMSTREAMHEADER();
hdr1.cbStruct = Marshal.SizeOf(hdr1);
hdr2 = new ACMSTREAMHEADER();
hdr2.cbStruct = Marshal.SizeOf(hdr2);
int cbIn = (wfIn.AvgBytesPerSec * DefaultBufferSizeInSeconds / wfIn.BlockAlign + 1) * wfIn.BlockAlign;
inBuffer1 = new byte[cbIn];
inBuffer2 = new byte[cbIn];
int cbOut = wfOut.BlockAlign * wfOut.AvgBytesPerSec * DefaultBufferSizeInSeconds;
mmr = AcmNativeMethods.acmStreamSize(hStreamComp, cbIn, out cbOut, AcmStreamSizeFlags.DESTINATION);
outBuffer1 = new byte[cbOut];
outBuffer2 = new byte[cbOut];
hinBuffer1 = GCHandle.Alloc(inBuffer1, GCHandleType.Pinned);
houtBuffer1 = GCHandle.Alloc(outBuffer1, GCHandleType.Pinned);
hinBuffer2 = GCHandle.Alloc(inBuffer2, GCHandleType.Pinned);
houtBuffer2 = GCHandle.Alloc(outBuffer2, GCHandleType.Pinned);
hdr1.pbSrc = hinBuffer1.AddrOfPinnedObject();
hdr1.pbDst = houtBuffer1.AddrOfPinnedObject();
hdr1.cbSrcLength = cbIn;
hdr1.cbDstLength = cbOut;
hdr2.pbSrc = hinBuffer2.AddrOfPinnedObject();
hdr2.pbDst = houtBuffer2.AddrOfPinnedObject();
hdr2.cbSrcLength = cbIn;
hdr2.cbDstLength = cbOut;
ptrBuffer1 = ptrBuffer1 = 0;
firstBlock = true;
mmr = AcmNativeMethods.acmStreamPrepareHeader(hStreamComp, ref hdr1, 0);
mmr = AcmNativeMethods.acmStreamPrepareHeader(hStreamComp, ref hdr2, 0);
return(true);
}
