/// <summary>
/// Gets the current frame size
/// </summary>
/// <returns>The frame size in a bitmap info header</returns>
private BitmapInfoHeader GetFrameSize()
{
BitmapInfoHeader bmiHeader = null;
try
{
IntPtr pmt = IntPtr.Zero;
AMMediaType mediaType = new AMMediaType();
try
{
// Get the current format info
mediaType.formatType = FormatType.VideoInfo2;
int hr = _streamConfig.GetFormat(out mediaType);
if (hr != 0)
{
Log.Log.Info("GetFrameSize: FAILED to get format - {0}", hr);
Marshal.ThrowExceptionForHR(hr);
return(bmiHeader);
}
// The formatPtr member points to different structures
// dependingon the formatType
if (mediaType.formatType == FormatType.VideoInfo)
{
VideoInfoHeader temp = new VideoInfoHeader();
Marshal.PtrToStructure(mediaType.formatPtr, temp);
bmiHeader = temp.BmiHeader;
}
else if (mediaType.formatType == FormatType.VideoInfo2)
{
VideoInfoHeader2 temp = new VideoInfoHeader2();
Marshal.PtrToStructure(mediaType.formatPtr, temp);
bmiHeader = temp.BmiHeader;
}
else if (mediaType.formatType == FormatType.Mpeg2Video)
{
MPEG2VideoInfo temp = new MPEG2VideoInfo();
Marshal.PtrToStructure(mediaType.formatPtr, temp);
bmiHeader = temp.hdr.BmiHeader;
}
else if (mediaType.formatType == FormatType.MpegVideo)
{
MPEG1VideoInfo temp = new MPEG1VideoInfo();
Marshal.PtrToStructure(mediaType.formatPtr, temp);
bmiHeader = temp.hdr.BmiHeader;
}
}
finally
{
Marshal.FreeCoTaskMem(pmt);
}
}
catch (Exception)
{
Log.Log.Info(" VideoCaptureDevice.getStreamConfigSetting() FAILED ");
}
return(bmiHeader);
}
/// <summary>
/// Erzeugt den Datentyp für ein Bildsignal.
/// </summary>
/// <param name="mpeg4">Gesetzt für HDTV.</param>
/// <param name="useCyberlink">Gesetzt für die Nutzung des Cyberlink Formates.</param>
/// <returns>Das gewünschte Datenformat.</returns>
private static MediaType CreateVideoType(bool mpeg4, bool?useCyberlink)
{
// Create format
var fakeFormat = new MPEG2VideoInfo {
BitmpapSize = 40
};
// Resulting media type
MediaType type;
// Check mode
if (mpeg4)
{
// Set it up
fakeFormat.BitmapWidth = 1980;
fakeFormat.BitmapHeight = 1088;
// Check flag
if (!useCyberlink.HasValue)
{
// See if we should use cyberlink format specs
string cl = ConfigurationManager.AppSettings["UseCyberLink"];
// Copy if set
useCyberlink = (!string.IsNullOrEmpty(cl) && bool.Parse(cl));
}
// Check mode
if (useCyberlink.Value)
{
// Create media type for video
type = new MediaType(Constants.KSDATAFORMAT_TYPE_VIDEO, Constants.KSDATAFORMAT_SUBTYPE_H264_VIDEO_Cyberlink, Constants.FORMAT_MPEG2_VIDEO, true, 0x10000);
}
else
{
// Create media type for video
type = new MediaType(Constants.KSDATAFORMAT_TYPE_VIDEO, Constants.KSDATAFORMAT_SUBTYPE_H264_VIDEO, Constants.FORMAT_MPEG2_VIDEO, true, 0x10000);
}
}
else
{
// Set it up
fakeFormat.BitmapWidth = 720;
fakeFormat.BitmapHeight = 576;
// Create media type for video
type = new MediaType(Constants.KSDATAFORMAT_TYPE_VIDEO, Constants.KSDATAFORMAT_SUBTYPE_MPEG2_VIDEO, Constants.FORMAT_MPEG2_VIDEO, true, 0x10000);
}
// Finish
type.SetFormat(fakeFormat);
// Report
return(type);
}
private object SetStreamConfigSetting(IAMStreamConfig streamConfig, string fieldName, object newValue)
{
try
{
object returnValue = null;
IntPtr pmt = IntPtr.Zero;
AMMediaType mediaType = new AMMediaType();
try
{
// Get the current format info
int hr = streamConfig.GetFormat(out mediaType);
if (hr != 0)
{
AppLogger.Message(String.Format(" VideoCaptureDevice:setStreamConfigSetting() FAILED to set:{0} (getformat) hr:{1}", fieldName, hr));
return(null);//Marshal.ThrowExceptionForHR(hr);
}
//Log.Info(" VideoCaptureDevice:setStreamConfigSetting() get formattype");
// The formatPtr member points to different structures
// dependingon the formatType
object formatStruct;
if (mediaType.formatType == FormatType.WaveEx)
{
formatStruct = new WaveFormatEx();
}
else if (mediaType.formatType == FormatType.VideoInfo)
{
formatStruct = new VideoInfoHeader();
}
else if (mediaType.formatType == FormatType.VideoInfo2)
{
formatStruct = new VideoInfoHeader2();
}
else if (mediaType.formatType == FormatType.Mpeg2Video)
{
formatStruct = new MPEG2VideoInfo();
}
else if (mediaType.formatType == FormatType.None)
{
AppLogger.Message(" VideoCaptureDevice:setStreamConfigSetting() FAILED no format returned");
return(null);// throw new NotSupportedException("This device does not support a recognized format block.");
}
else
{
AppLogger.Message(" VideoCaptureDevice:setStreamConfigSetting() FAILED unknown fmt");
return(null);//throw new NotSupportedException("This device does not support a recognized format block.");
}
//Log.Info(" VideoCaptureDevice.setStreamConfigSetting() get formatptr");
// Retrieve the nested structure
Marshal.PtrToStructure(mediaType.formatPtr, formatStruct);
// Find the required field
//Log.Info(" VideoCaptureDevice.setStreamConfigSetting() get field");
Type structType = formatStruct.GetType();
FieldInfo fieldInfo = structType.GetField(fieldName);
if (fieldInfo == null)
{
AppLogger.Message(String.Format(" VideoCaptureDevice:setStreamConfigSetting() FAILED to to find member:{0}", fieldName));
throw new NotSupportedException("FAILED to find the member '" + fieldName + "' in the format block.");
}
//Log.Info(" VideoCaptureDevice.setStreamConfigSetting() set value");
// Update the value of the field
fieldInfo.SetValue(formatStruct, newValue);
// PtrToStructure copies the data so we need to copy it back
Marshal.StructureToPtr(formatStruct, mediaType.formatPtr, false);
//Log.Info(" VideoCaptureDevice.setStreamConfigSetting() set format");
// Save the changes
hr = streamConfig.SetFormat(mediaType);
if (hr != 0)
{
AppLogger.Message(String.Format(" VideoCaptureDevice:setStreamConfigSetting() FAILED to set:{0} {1}", fieldName, hr));
return(null);//Marshal.ThrowExceptionForHR(hr);
}
//else Log.Info(" VideoCaptureDevice.setStreamConfigSetting() set:{0}",fieldName);
//Log.Info(" VideoCaptureDevice.setStreamConfigSetting() done");
}
finally
{
Marshal.FreeCoTaskMem(pmt);
}
return(returnValue);
}
catch (Exception)
{
AppLogger.Message(" VideoCaptureDevice.:setStreamConfigSetting() FAILED ");
}
return(null);
}
private object GetStreamConfigSetting(IAMStreamConfig streamConfig, string fieldName)
{
object returnValue = null;
try
{
if (streamConfig == null)
{
throw new NotSupportedException();
}
IntPtr pmt = IntPtr.Zero;
AMMediaType mediaType = new AMMediaType();
try
{
// Get the current format info
mediaType.formatType = FormatType.VideoInfo2;
int hr = streamConfig.GetFormat(out mediaType);
if (hr != 0)
{
AppLogger.Message(String.Format("VideoCaptureDevice:getStreamConfigSetting() FAILED to get:{0} (not supported)", fieldName));
Marshal.ThrowExceptionForHR(hr);
}
// The formatPtr member points to different structures
// dependingon the formatType
object formatStruct;
//Log.Info(" VideoCaptureDevice.getStreamConfigSetting() find formattype");
if (mediaType.formatType == FormatType.WaveEx)
{
formatStruct = new WaveFormatEx();
}
else if (mediaType.formatType == FormatType.VideoInfo)
{
formatStruct = new VideoInfoHeader();
}
else if (mediaType.formatType == FormatType.VideoInfo2)
{
formatStruct = new VideoInfoHeader2();
}
else if (mediaType.formatType == FormatType.Mpeg2Video)
{
formatStruct = new MPEG2VideoInfo();
}
else if (mediaType.formatType == FormatType.None)
{
//Log.Info("VideoCaptureDevice:getStreamConfigSetting() FAILED no format returned");
//throw new NotSupportedException("This device does not support a recognized format block.");
return(null);
}
else
{
//Log.Info("VideoCaptureDevice:getStreamConfigSetting() FAILED unknown fmt:{0} {1} {2}", mediaType.formatType, mediaType.majorType, mediaType.subType);
//throw new NotSupportedException("This device does not support a recognized format block.");
return(null);
}
//Log.Info(" VideoCaptureDevice.getStreamConfigSetting() get formatptr");
// Retrieve the nested structure
Marshal.PtrToStructure(mediaType.formatPtr, formatStruct);
// Find the required field
//Log.Info(" VideoCaptureDevice.getStreamConfigSetting() get field");
Type structType = formatStruct.GetType();
FieldInfo fieldInfo = structType.GetField(fieldName);
if (fieldInfo == null)
{
//Log.Info("VideoCaptureDevice.getStreamConfigSetting() FAILED to to find member:{0}", fieldName);
//throw new NotSupportedException("VideoCaptureDevice:FAILED to find the member '" + fieldName + "' in the format block.");
return(null);
}
// Extract the field's current value
//Log.Info(" VideoCaptureDevice.getStreamConfigSetting() get value");
returnValue = fieldInfo.GetValue(formatStruct);
//Log.Info(" VideoCaptureDevice.getStreamConfigSetting() done");
}
finally
{
Marshal.FreeCoTaskMem(pmt);
}
}
catch (Exception)
{
AppLogger.Message(" VideoCaptureDevice.getStreamConfigSetting() FAILED ");
}
return(returnValue);
}
/// <summary>
/// Erzeugt den Datentyp für ein Bildsignal.
/// </summary>
/// <param name="mpeg4">Gesetzt für HDTV.</param>
/// <param name="useCyberlink">Gesetzt für die Nutzung des Cyberlink Formates.</param>
/// <returns>Das gewünschte Datenformat.</returns>
private static MediaType CreateVideoType( bool mpeg4, bool? useCyberlink )
{
// Create format
var fakeFormat = new MPEG2VideoInfo { BitmpapSize = 40 };
// Resulting media type
MediaType type;
// Check mode
if (mpeg4)
{
// Set it up
fakeFormat.BitmapWidth = 1980;
fakeFormat.BitmapHeight = 1088;
// Check flag
if (!useCyberlink.HasValue)
{
// See if we should use cyberlink format specs
string cl = ConfigurationManager.AppSettings["UseCyberLink"];
// Copy if set
useCyberlink = (!string.IsNullOrEmpty( cl ) && bool.Parse( cl ));
}
// Check mode
if (useCyberlink.Value)
{
// Create media type for video
type = new MediaType( Constants.KSDATAFORMAT_TYPE_VIDEO, Constants.KSDATAFORMAT_SUBTYPE_H264_VIDEO_Cyberlink, Constants.FORMAT_MPEG2_VIDEO, true, 0x10000 );
}
else
{
// Create media type for video
type = new MediaType( Constants.KSDATAFORMAT_TYPE_VIDEO, Constants.KSDATAFORMAT_SUBTYPE_H264_VIDEO, Constants.FORMAT_MPEG2_VIDEO, true, 0x10000 );
}
}
else
{
// Set it up
fakeFormat.BitmapWidth = 720;
fakeFormat.BitmapHeight = 576;
// Create media type for video
type = new MediaType( Constants.KSDATAFORMAT_TYPE_VIDEO, Constants.KSDATAFORMAT_SUBTYPE_MPEG2_VIDEO, Constants.FORMAT_MPEG2_VIDEO, true, 0x10000 );
}
// Finish
type.SetFormat( fakeFormat );
// Report
return type;
}
/// <summary>
/// Sets the frame size
/// </summary>
/// <param name="bmiHeader">The bitmap info header with the frame size</param>
/// <returns>true, if it was successful; false otherwise</returns>
private bool SetFrameSize(BitmapInfoHeader bmiHeader)
{
try
{
IntPtr pmt = IntPtr.Zero;
AMMediaType mediaType;
try
{
// Get the current format info
int hr = _streamConfig.GetFormat(out mediaType);
if (hr != 0)
{
Log.Log.Info("SetFrameSize: Failed to get the video format - {0}", hr);
return(false);
}
// The formatPtr member points to different structures
// dependingon the formatType
object formatStruct;
if (mediaType.formatType == FormatType.VideoInfo)
{
VideoInfoHeader temp = new VideoInfoHeader();
Marshal.PtrToStructure(mediaType.formatPtr, temp);
temp.BmiHeader = bmiHeader;
formatStruct = temp;
}
else if (mediaType.formatType == FormatType.VideoInfo2)
{
VideoInfoHeader2 temp = new VideoInfoHeader2();
Marshal.PtrToStructure(mediaType.formatPtr, temp);
temp.BmiHeader = bmiHeader;
formatStruct = temp;
}
else if (mediaType.formatType == FormatType.Mpeg2Video)
{
MPEG2VideoInfo temp = new MPEG2VideoInfo();
Marshal.PtrToStructure(mediaType.formatPtr, temp);
temp.hdr.BmiHeader = bmiHeader;
formatStruct = temp;
}
else if (mediaType.formatType == FormatType.MpegVideo)
{
MPEG1VideoInfo temp = new MPEG1VideoInfo();
Marshal.PtrToStructure(mediaType.formatPtr, temp);
temp.hdr.BmiHeader = bmiHeader;
formatStruct = temp;
}
else if (mediaType.formatType == FormatType.None)
{
Log.Log.Info("SetFrameSize: FAILED no format returned");
return(false);
}
else
{
Log.Log.Info("SetFrameSize: FAILED unknown fmt");
return(false);
}
// PtrToStructure copies the data so we need to copy it back
Marshal.StructureToPtr(formatStruct, mediaType.formatPtr, false);
// Save the changes
hr = _streamConfig.SetFormat(mediaType);
if (hr != 0)
{
Log.Log.Info("SetFrameSize: FAILED to set:{0}", hr);
return(false);
}
}
finally
{
Marshal.FreeCoTaskMem(pmt);
}
return(true);
}
catch (Exception)
{
Log.Log.Info("SetFrameSize: FAILED ");
}
return(false);
}
