PDFiumBitmap(FPDF_BITMAP bitmap, BitmapFormats format)
: base(bitmap)
{
if (bitmap.IsNull)
{
throw new PDFiumException();
}
GetBytesPerPixel(format);
Format = format;
}
static int GetBytesPerPixel(BitmapFormats format)
{
if (format == BitmapFormats.FPDFBitmap_BGR)
{
return(3);
}
if (format == BitmapFormats.FPDFBitmap_BGRA || format == BitmapFormats.FPDFBitmap_BGRx)
{
return(4);
}
if (format == BitmapFormats.FPDFBitmap_Gray)
{
return(1);
}
throw new ArgumentOutOfRangeException(nameof(format));
}
public FilmPlayer(
string _fileName,
Camera.FrameHandler _recData = null,
BitmapFormats _format = BitmapFormats.Default,
int _nLoopedFrames = 0)
: base(_recData)
{
//Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
//if (dlg.ShowDialog() == true)
// filePath = dlg.FileName;
if (!File.Exists(_fileName)) throw new FileNotFoundException("Файла с указанным именем не существует.");
fs = File.OpenRead(_fileName);
br = new BinaryReader(fs);
format = _format;
nLoopedFrames = _nLoopedFrames;
Type FileHeaderType;
Type InfoHeaderType;
switch (format)
{
case BitmapFormats.Default:
FileHeaderType = typeof(BitmapFileHeader);
InfoHeaderType = typeof(BitmapInfoHeader);
break;
case BitmapFormats.OLS:
FileHeaderType = typeof(OLSFileHeader);
InfoHeaderType = typeof(OLSInfoHeader);
break;
default:
throw new NotImplementedException();
}
fileHeaderBuff = new byte[Marshal.SizeOf(FileHeaderType)];
fileHeaderHandle = GCHandle.Alloc(fileHeaderBuff, GCHandleType.Pinned);
fileHeader0 = fileHeaderHandle.AddrOfPinnedObject();
infoHeaderBuff = new byte[Marshal.SizeOf(InfoHeaderType)];
infoHeaderHandle = GCHandle.Alloc(infoHeaderBuff, GCHandleType.Pinned);
infoHeader0 = infoHeaderHandle.AddrOfPinnedObject();
}
/// <summary>
/// Creates a new <see cref="PDFiumBitmap"/> using memory allocated by the caller.
/// The caller is responsible for freeing the memory and that the adress stays
/// valid during the lifetime of the returned <see cref="PDFiumBitmap"/>.
/// </summary>
/// <param name="width">The width of the new bitmap.</param>
/// <param name="height">The height of the new bitmap.</param>
/// <param name="format">The format of the new bitmap.</param>
/// <param name="scan0">The adress of the memory block which holds the pixel values.</param>
/// <param name="stride">The number of bytes per image row.</param>
public PDFiumBitmap(int width, int height, BitmapFormats format, IntPtr scan0, int stride)
: this(PDFium.FPDFBitmap_CreateEx(width, height, format, scan0, stride), format)
{
}
/// <summary>
/// Creates a new <see cref="PdfiumBitmap"/> using memory allocated by the caller.
/// The caller is responsible for freeing the memory and that the adress stays
/// valid during the lifetime of the returned <see cref="PdfiumBitmap"/>. To free
/// unmanaged resources, <see cref="Dispose"/> must be called.
/// </summary>
/// <param name="width">The width of the new bitmap.</param>
/// <param name="height">The height of the new bitmap.</param>
/// <param name="format">The format of the new bitmap.</param>
/// <param name="scan0">The adress of the memory block which holds the pixel values.</param>
/// <param name="stride">The number of bytes per image row.</param>
public PdfiumBitmap(int width, int height, BitmapFormats format, IntPtr scan0, int stride)
: this(Pdfium.FPDFBitmap_CreateEx(width, height, format, scan0, stride))
{
FillRectangle(0, 0, width, height, 0xFFFFFFFF);
}
