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migration to IBinaryStream interface.

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This commit is contained in:
morkt
2016-10-15 09:34:46 +04:00
parent 0b96ef8f77
commit 503b734645
16 changed files with 264 additions and 332 deletions
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110
GameRes/ImageTGA.cs
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@@ -52,14 +52,11 @@ namespace GameRes
public override uint Signature { get { return 0; } }
public override bool CanWrite { get { return true; } }
public override ImageData Read (Stream stream, ImageMetaData metadata)
public override ImageData Read (IBinaryStream stream, ImageMetaData metadata)
{
var meta = metadata as TgaMetaData;
if (null == meta)
throw new System.ArgumentException ("TgaFormat.Read should be supplied with TgaMetaData", "metadata");
var reader = new Reader (stream, meta);
var reader = new Reader (stream, (TgaMetaData)metadata);
var pixels = reader.Unpack();
return ImageData.Create (meta, reader.Format, reader.Palette, pixels, reader.Stride);
return ImageData.Create (metadata, reader.Format, reader.Palette, pixels, reader.Stride);
}
public override void Write (Stream stream, ImageData image)
@@ -118,65 +115,62 @@ namespace GameRes
}
}
public override ImageMetaData ReadMetaData (Stream stream)
public override ImageMetaData ReadMetaData (IBinaryStream file)
{
using (var file = new ArcView.Reader (stream))
short id_length = (short)file.ReadByte();
short colormap_type = (short)file.ReadByte();
if (colormap_type > 1)
return null;
short image_type = (short)file.ReadByte();
ushort colormap_first = file.ReadUInt16();
ushort colormap_length = file.ReadUInt16();
short colormap_depth = (short)file.ReadByte();
int pos_x = file.ReadInt16();
int pos_y = file.ReadInt16();
uint width = file.ReadUInt16();
uint height = file.ReadUInt16();
int bpp = file.ReadByte();
if (bpp != 32 && bpp != 24 && bpp != 16 && bpp != 15 && bpp != 8)
return null;
short descriptor = (short)file.ReadByte();
uint colormap_offset = (uint)(18 + id_length);
switch (image_type)
{
short id_length = file.ReadByte();
short colormap_type = file.ReadByte();
if (colormap_type > 1)
default: return null;
case 1: // Uncompressed, color-mapped images.
case 9: // Runlength encoded color-mapped images.
case 32: // Compressed color-mapped data, using Huffman, Delta, and
// runlength encoding.
case 33: // Compressed color-mapped data, using Huffman, Delta, and
// runlength encoding. 4-pass quadtree-type process.
if (colormap_depth != 24 && colormap_depth != 32)
return null;
short image_type = file.ReadByte();
ushort colormap_first = file.ReadUInt16();
ushort colormap_length = file.ReadUInt16();
short colormap_depth = file.ReadByte();
int pos_x = file.ReadInt16();
int pos_y = file.ReadInt16();
uint width = file.ReadUInt16();
uint height = file.ReadUInt16();
int bpp = file.ReadByte();
if (bpp != 32 && bpp != 24 && bpp != 16 && bpp != 15 && bpp != 8)
return null;
short descriptor = file.ReadByte();
uint colormap_offset = (uint)(18 + id_length);
switch (image_type)
{
default: return null;
case 1: // Uncompressed, color-mapped images.
case 9: // Runlength encoded color-mapped images.
case 32: // Compressed color-mapped data, using Huffman, Delta, and
// runlength encoding.
case 33: // Compressed color-mapped data, using Huffman, Delta, and
// runlength encoding. 4-pass quadtree-type process.
if (colormap_depth != 24 && colormap_depth != 32)
return null;
break;
case 2: // Uncompressed, RGB images.
case 3: // Uncompressed, black and white images.
case 10: // Runlength encoded RGB images.
case 11: // Compressed, black and white images.
break;
}
return new TgaMetaData {
OffsetX = pos_x,
OffsetY = pos_y,
Width = width,
Height = height,
BPP = bpp,
ImageType = image_type,
ColormapType = colormap_type,
ColormapOffset = colormap_offset,
ColormapFirst = colormap_first,
ColormapLength = colormap_length,
ColormapDepth = colormap_depth,
Descriptor = descriptor,
};
break;
case 2: // Uncompressed, RGB images.
case 3: // Uncompressed, black and white images.
case 10: // Runlength encoded RGB images.
case 11: // Compressed, black and white images.
break;
}
return new TgaMetaData {
OffsetX = pos_x,
OffsetY = pos_y,
Width = width,
Height = height,
BPP = bpp,
ImageType = image_type,
ColormapType = colormap_type,
ColormapOffset = colormap_offset,
ColormapFirst = colormap_first,
ColormapLength = colormap_length,
ColormapDepth = colormap_depth,
Descriptor = descriptor,
};
}
internal class Reader
{
Stream m_input;
IBinaryStream m_input;
TgaMetaData m_meta;
int m_width;
int m_height;
@@ -189,7 +183,7 @@ namespace GameRes
public int Stride { get { return m_stride; } }
public byte[] Data { get { return m_data; } }
public Reader (Stream stream, TgaMetaData meta)
public Reader (IBinaryStream stream, TgaMetaData meta)
{
m_input = stream;
m_meta = meta;