/// <summary>
/// Create the writer indicating Metadata information
/// </summary>
/// <param name="output"><see cref="System.IO.Stream"/> Where resulting WMA string will be written</param>
/// <param name="format">PCM format of input data received in <see cref="WmaWriter.Write"/> method</param>
/// <param name="profile">IWMProfile that describe the resulting compressed stream</param>
/// <param name="MetadataAttributes">Array of <see cref="Yeti.WMFSdk.WM_Attr"/> structures describing the metadata information that will be in the result stream</param>
public WmaWriter(Stream output, WaveFormat format, IWMProfile profile, WM_Attr[] MetadataAttributes)
: base(output, format)
{
m_Writer = WM.CreateWriter();
IWMWriterAdvanced wa = (IWMWriterAdvanced)m_Writer;
wa.AddSink((IWMWriterSink)this);
m_Writer.SetProfile(profile);
uint inputs;
m_Writer.GetInputCount(out inputs);
if (inputs == 1)
{
IWMInputMediaProps InpProps;
Guid type;
m_Writer.GetInputProps(0, out InpProps);
InpProps.GetType(out type);
if (type == MediaTypes.WMMEDIATYPE_Audio)
{
WM_MEDIA_TYPE mt;
mt.majortype = MediaTypes.WMMEDIATYPE_Audio;
mt.subtype = MediaTypes.WMMEDIASUBTYPE_PCM;
mt.bFixedSizeSamples = true;
mt.bTemporalCompression = false;
mt.lSampleSize = (uint)m_InputDataFormat.nBlockAlign;
mt.formattype = MediaTypes.WMFORMAT_WaveFormatEx;
mt.pUnk = IntPtr.Zero;
mt.cbFormat = (uint)Marshal.SizeOf(m_InputDataFormat);
GCHandle h = GCHandle.Alloc(m_InputDataFormat, GCHandleType.Pinned);
try
{
mt.pbFormat = h.AddrOfPinnedObject();
InpProps.SetMediaType(ref mt);
}
finally
{
h.Free();
}
m_Writer.SetInputProps(0, InpProps);
if ( MetadataAttributes != null )
{
WMHeaderInfo info = new WMHeaderInfo((IWMHeaderInfo)m_Writer);
foreach(WM_Attr attr in MetadataAttributes)
{
info.SetAttribute(attr);
}
info = null;
}
m_Writer.BeginWriting();
m_Profile = profile;
}
else
{
throw new ArgumentException("Invalid profile", "profile");
}
}
else
{
throw new ArgumentException("Invalid profile", "profile");
}
}
/// <summary>
/// Set an attribute specifying a stream number. Wraps IWMHeaderInfo.SetAttribute
/// </summary>
/// <param name="StreamNumber">Stream number. Zero for file level attributes.</param>
/// <param name="attr">Attribute to set. <see cref="Yeti.WMFSdk.WM_Attr"/></param>
public void SetAttribute(int StreamNumber, WM_Attr attr)
{
object obj;
ushort size;
switch (attr.DataType)
{
case WMT_ATTR_DATATYPE.WMT_TYPE_STRING:
byte[] arr = Encoding.Unicode.GetBytes((string)attr.Value + (char)0);
obj = arr;
size = (ushort)arr.Length;
break;
case WMT_ATTR_DATATYPE.WMT_TYPE_BOOL:
obj = (uint)((bool)attr?1:0);
size = 4;
break;
case WMT_ATTR_DATATYPE.WMT_TYPE_BINARY:
obj = (byte[])attr.Value;
size = (ushort)((byte[])obj).Length;
break;
case WMT_ATTR_DATATYPE.WMT_TYPE_DWORD:
obj = (uint)attr;
size = 4;
break;
case WMT_ATTR_DATATYPE.WMT_TYPE_QWORD:
obj = (ulong)attr;
size = 8;
break;
case WMT_ATTR_DATATYPE.WMT_TYPE_WORD:
obj = (ushort)attr;
size = 2;
break;
case WMT_ATTR_DATATYPE.WMT_TYPE_GUID:
obj = (Guid)attr;
size = (ushort)Marshal.SizeOf(typeof(Guid));
break;
default:
throw new ArgumentException("Invalid data type", "attr");
}
GCHandle h = GCHandle.Alloc(obj, GCHandleType.Pinned);
try
{
m_HeaderInfo.SetAttribute((ushort)StreamNumber, attr.Name, attr.DataType, h.AddrOfPinnedObject(), size);
}
finally
{
h.Free();
}
}
/// <summary>
/// Set file level attributes
/// </summary>
/// <param name="attr">Attribute to set <see cref="Yeti.WMFSdk.WM_Attr"/></param>
public void SetAttribute(WM_Attr attr)
{
SetAttribute(0, attr);
}
/// <summary>
/// Set an attribute specifying a stream number. Wraps IWMHeaderInfo.SetAttribute
/// </summary>
/// <param name="StreamNumber">Stream number. Zero for file level attributes.</param>
/// <param name="attr">Attribute to set. <see cref="Yeti.WMFSdk.WM_Attr"/></param>
public void SetAttribute(int StreamNumber, WM_Attr attr)
{
object obj;
ushort size;
switch (attr.DataType)
{
case WMT_ATTR_DATATYPE.WMT_TYPE_STRING:
byte[] arr = Encoding.Unicode.GetBytes((string)attr.Value + (char)0);
obj = arr;
size = (ushort)arr.Length;
break;
case WMT_ATTR_DATATYPE.WMT_TYPE_BOOL:
obj = (uint)((bool)attr ? 1 : 0);
size = 4;
break;
case WMT_ATTR_DATATYPE.WMT_TYPE_BINARY:
obj = (byte[])attr.Value;
size = (ushort)((byte[])obj).Length;
break;
case WMT_ATTR_DATATYPE.WMT_TYPE_DWORD:
obj = (uint)attr;
size = 4;
break;
case WMT_ATTR_DATATYPE.WMT_TYPE_QWORD:
obj = (ulong)attr;
size = 8;
break;
case WMT_ATTR_DATATYPE.WMT_TYPE_WORD:
obj = (ushort)attr;
size = 2;
break;
case WMT_ATTR_DATATYPE.WMT_TYPE_GUID:
obj = (Guid)attr;
size = (ushort)Marshal.SizeOf(typeof (Guid));
break;
default:
throw new ArgumentException("Invalid data type", "attr");
}
GCHandle h = GCHandle.Alloc(obj, GCHandleType.Pinned);
try
{
m_HeaderInfo.SetAttribute((ushort)StreamNumber, attr.Name, attr.DataType, h.AddrOfPinnedObject(), size);
}
finally
{
h.Free();
}
}
/// <summary>
/// Set file level attributes
/// </summary>
/// <param name="attr">Attribute to set <see cref="Yeti.WMFSdk.WM_Attr"/></param>
public void SetAttribute(WM_Attr attr)
{
SetAttribute(0, attr);
}
