private Bitmap Leer()
{
Bitmap imagen;
BinaryReader br = new BinaryReader(File.OpenRead(archivo));
sTGA tga = new sTGA();
// Lee la cabecera
tga.header.image_id_length = br.ReadByte();
tga.header.colorMap = br.ReadBoolean();
#region Image Type
switch (br.ReadByte())
{
case 0x00:
tga.header.image_type = ImageType.none;
break;
case 0x01:
tga.header.image_type = ImageType.Uncompressed_ColorMapped;
break;
case 0x02:
tga.header.image_type = ImageType.Uncompressed_TrueColor;
break;
case 0x03:
tga.header.image_type = ImageType.Uncompressed_BlackWhite;
break;
case 0x09:
tga.header.image_type = ImageType.RLE_ColorMapped;
break;
case 0x0A:
tga.header.image_type = ImageType.RLE_TrueColor;
break;
case 0x0B:
tga.header.image_type = ImageType.RLE_BlackWhite;
break;
default:
tga.header.image_type = ImageType.noSopported;
break;
}
#endregion
tga.header.colorMap_spec.first_entry_index = br.ReadUInt16();
tga.header.colorMap_spec.length = br.ReadUInt16();
tga.header.colorMap_spec.entry_size = br.ReadByte();
tga.header.image_spec.posX = br.ReadUInt16();
tga.header.image_spec.posY = br.ReadUInt16();
tga.header.image_spec.width = br.ReadUInt16();
tga.header.image_spec.height = br.ReadUInt16();
tga.header.image_spec.depth = br.ReadByte();
tga.header.image_spec.descriptor = br.ReadByte();
tga.imageData.image_id = new String(br.ReadChars(tga.header.image_id_length));
if (tga.header.colorMap)
{
tga.imageData.colorMap = new Color[tga.header.colorMap_spec.length / (tga.header.colorMap_spec.entry_size / 8)];
switch (tga.header.colorMap_spec.entry_size)
{
case 24:
for (int c = 0; c < tga.imageData.colorMap.Length; c++)
{
Color newColor = Color.FromArgb(br.ReadByte(), br.ReadByte(), br.ReadByte());
tga.imageData.colorMap[c] = newColor;
}
br.ReadBytes(tga.header.colorMap_spec.length - tga.imageData.colorMap.Length * 3);
break;
}
}
imagen = new Bitmap(tga.header.image_spec.width, tga.header.image_spec.height);
#region Obtener colores de pixels
Color[] colores = new Color[tga.header.image_spec.height * tga.header.image_spec.width];
int i = 0;
switch (tga.header.image_type)
{
case TGA.ImageType.RLE_TrueColor:
// Primero descomprimimos
long pos = br.BaseStream.Position;
br.Close();
tga.imageData.image = RLE.Descomprimir_Pixel(archivo, ref pos, tga.header.image_spec.depth,
tga.header.image_spec.width, tga.header.image_spec.height);
br = new BinaryReader(File.OpenRead(archivo));
br.BaseStream.Position = pos;
// Luego convertimos los colores
for (int j = 0; j < colores.Length; j++)
{
if (tga.header.image_spec.depth == 0x20)
colores[j] = Color.FromArgb(tga.imageData.image[4 * j + 3], tga.imageData.image[4 * j],
tga.imageData.image[4 * j + 1], tga.imageData.image[4 * j + 2]);
else
colores[j] = Color.FromArgb(255, tga.imageData.image[3 * j],
tga.imageData.image[3 * j + 1], tga.imageData.image[3 * j + 2]);
}
// Set pixels colors
for (int y = tga.header.image_spec.height - 1; y > 0; y--)
{
for (int x = 0; x < tga.header.image_spec.width; x++)
{
imagen.SetPixel(x, y, colores[i]);
i++;
}
}
break;
case TGA.ImageType.Uncompressed_TrueColor:
colores = Actions.BGR555ToColor(br.ReadBytes(tga.header.image_spec.height * tga.header.image_spec.width * 2));
for (int y = tga.header.image_spec.height - 1; y > 0; y--)
{
for (int x = 0; x < tga.header.image_spec.width; x++)
{
imagen.SetPixel(x, y, colores[i]);
i++;
}
}
break;
case TGA.ImageType.Uncompressed_ColorMapped:
for (int y = 0; y < tga.header.image_spec.height; y++)
{
for (int x = 0; x < tga.header.image_spec.width; x++)
{
imagen.SetPixel(x, y, tga.imageData.colorMap[br.ReadByte()]);
i++;
}
}
break;
case TGA.ImageType.Uncompressed_BlackWhite:
case TGA.ImageType.RLE_BlackWhite:
case TGA.ImageType.RLE_ColorMapped:
case TGA.ImageType.noSopported:
default:
throw new Exception("Invalid value for ImageType");
}
#endregion
br.Close();
return imagen;
}
private Bitmap Leer()
{
Bitmap imagen;
BinaryReader br = new BinaryReader(File.OpenRead(archivo));
sTGA tga = new sTGA();
// Lee la cabecera
tga.header.image_id_length = br.ReadByte();
tga.header.colorMap = br.ReadBoolean();
#region Image Type
switch (br.ReadByte())
{
case 0x00:
tga.header.image_type = ImageType.none;
break;
case 0x01:
tga.header.image_type = ImageType.Uncompressed_ColorMapped;
break;
case 0x02:
tga.header.image_type = ImageType.Uncompressed_TrueColor;
break;
case 0x03:
tga.header.image_type = ImageType.Uncompressed_BlackWhite;
break;
case 0x09:
tga.header.image_type = ImageType.RLE_ColorMapped;
break;
case 0x0A:
tga.header.image_type = ImageType.RLE_TrueColor;
break;
case 0x0B:
tga.header.image_type = ImageType.RLE_BlackWhite;
break;
default:
tga.header.image_type = ImageType.noSopported;
break;
}
#endregion
tga.header.colorMap_spec.first_entry_index = br.ReadUInt16();
tga.header.colorMap_spec.length = br.ReadUInt16();
tga.header.colorMap_spec.entry_size = br.ReadByte();
tga.header.image_spec.posX = br.ReadUInt16();
tga.header.image_spec.posY = br.ReadUInt16();
tga.header.image_spec.width = br.ReadUInt16();
tga.header.image_spec.height = br.ReadUInt16();
tga.header.image_spec.depth = br.ReadByte();
tga.header.image_spec.descriptor = br.ReadByte();
tga.imageData.image_id = new String(br.ReadChars(tga.header.image_id_length));
if (tga.header.colorMap)
{
tga.imageData.colorMap = new Color[tga.header.colorMap_spec.length / (tga.header.colorMap_spec.entry_size / 8)];
switch (tga.header.colorMap_spec.entry_size)
{
case 24:
for (int c = 0; c < tga.imageData.colorMap.Length; c++)
{
Color newColor = Color.FromArgb(br.ReadByte(), br.ReadByte(), br.ReadByte());
tga.imageData.colorMap[c] = newColor;
}
br.ReadBytes(tga.header.colorMap_spec.length - tga.imageData.colorMap.Length * 3);
break;
}
}
imagen = new Bitmap(tga.header.image_spec.width, tga.header.image_spec.height);
#region Obtener colores de pixels
Color[] colores = new Color[tga.header.image_spec.height * tga.header.image_spec.width];
int i = 0;
switch (tga.header.image_type)
{
case TGA.ImageType.RLE_TrueColor:
// Primero descomprimimos
long pos = br.BaseStream.Position;
br.Close();
tga.imageData.image = RLE.Descomprimir_Pixel(archivo, ref pos, tga.header.image_spec.depth,
tga.header.image_spec.width, tga.header.image_spec.height);
br = new BinaryReader(File.OpenRead(archivo));
br.BaseStream.Position = pos;
// Luego convertimos los colores
for (int j = 0; j < colores.Length; j++)
{
if (tga.header.image_spec.depth == 0x20)
{
colores[j] = Color.FromArgb(tga.imageData.image[4 * j + 3], tga.imageData.image[4 * j],
tga.imageData.image[4 * j + 1], tga.imageData.image[4 * j + 2]);
}
else
{
colores[j] = Color.FromArgb(255, tga.imageData.image[3 * j],
tga.imageData.image[3 * j + 1], tga.imageData.image[3 * j + 2]);
}
}
// Set pixels colors
for (int y = tga.header.image_spec.height - 1; y > 0; y--)
{
for (int x = 0; x < tga.header.image_spec.width; x++)
{
imagen.SetPixel(x, y, colores[i]);
i++;
}
}
break;
case TGA.ImageType.Uncompressed_TrueColor:
colores = Actions.BGR555ToColor(br.ReadBytes(tga.header.image_spec.height * tga.header.image_spec.width * 2));
for (int y = tga.header.image_spec.height - 1; y > 0; y--)
{
for (int x = 0; x < tga.header.image_spec.width; x++)
{
imagen.SetPixel(x, y, colores[i]);
i++;
}
}
break;
case TGA.ImageType.Uncompressed_ColorMapped:
for (int y = 0; y < tga.header.image_spec.height; y++)
{
for (int x = 0; x < tga.header.image_spec.width; x++)
{
imagen.SetPixel(x, y, tga.imageData.colorMap[br.ReadByte()]);
i++;
}
}
break;
case TGA.ImageType.Uncompressed_BlackWhite:
case TGA.ImageType.RLE_BlackWhite:
case TGA.ImageType.RLE_ColorMapped:
case TGA.ImageType.noSopported:
default:
throw new Exception("Invalid value for ImageType");
}
#endregion
br.Close();
return(imagen);
}
