/// <summary>
/// Gets the rotation filter corresponding to the requested rotation amount. Returns an empty string when
/// no rotation is requested.
/// </summary>
/// <param name="rotation">The amount of rotation being requested.</param>
/// <param name="encoderArguments"></param>
/// <returns>System.String.</returns>
/// <remarks>Documentation: http://ffmpeg.org/ffmpeg-filters.html#transpose, http://ffmpeg.org/ffmpeg-filters.html#hflip,
/// http://ffmpeg.org/ffmpeg-filters.html#vflip</remarks>
private static string GetAutoRotationFilter(MediaObjectRotation rotation, string encoderArguments)
{
var filter = String.Empty;
if (!encoderArguments.Contains(AutoRotateFilterName))
{
return(filter);
}
switch (rotation)
{
case MediaObjectRotation.Rotate90: filter = "transpose=clock"; break;
case MediaObjectRotation.Rotate180: filter = "hflip,vflip"; break;
case MediaObjectRotation.Rotate270: filter = "transpose=cclock"; break;
}
return(ApplyCommaToRotationFilter(filter, encoderArguments));
}
private static double GetRotationInDegrees(MediaObjectRotation rotation)
{
switch (rotation)
{
case MediaObjectRotation.Rotate0:
return(0);
case MediaObjectRotation.Rotate90:
return(90);
case MediaObjectRotation.Rotate180:
return(180);
case MediaObjectRotation.Rotate270:
return(270);
default:
return(0);
}
}
private static double GetRotationInDegrees(MediaObjectRotation rotation)
{
switch (rotation)
{
case MediaObjectRotation.Rotate0:
return 0;
case MediaObjectRotation.Rotate90:
return 90;
case MediaObjectRotation.Rotate180:
return 180;
case MediaObjectRotation.Rotate270:
return 270;
default:
return 0;
}
}
/// <summary>
/// Gets the rotation filter corresponding to the requested rotation amount. Returns an empty string when
/// no rotation is requested.
/// </summary>
/// <param name="rotation">The amount of rotation being requested.</param>
/// <param name="encoderArguments"></param>
/// <returns>System.String.</returns>
/// <remarks>Documentation: http://ffmpeg.org/ffmpeg-filters.html#transpose, http://ffmpeg.org/ffmpeg-filters.html#hflip,
/// http://ffmpeg.org/ffmpeg-filters.html#vflip</remarks>
private static string GetAutoRotationFilter(MediaObjectRotation rotation, string encoderArguments)
{
var filter = String.Empty;
if (!encoderArguments.Contains(AutoRotateFilterName))
return filter;
switch (rotation)
{
case MediaObjectRotation.Rotate90: filter = "transpose=clock"; break;
case MediaObjectRotation.Rotate180: filter = "hflip,vflip"; break;
case MediaObjectRotation.Rotate270: filter = "transpose=cclock"; break;
}
return ApplyCommaToRotationFilter(filter, encoderArguments);
}
