public override ImageMetaData ReadMetaData(Stream stream)
{
using (var input = new BinaryReader(stream, Encoding.ASCII, true))
{
int sig = input.ReadInt32();
if (sig != 5 && sig != 10)
{
return(null);
}
uint header_end = (uint)sig * 4;
uint index_offset = input.ReadUInt32();
input.BaseStream.Position = header_end - 4;
uint data_offset = input.ReadUInt32() + 8;
if (index_offset >= data_offset || index_offset < header_end)
{
return(null);
}
input.BaseStream.Position = index_offset;
int tile_count = input.ReadInt16();
int flag = input.ReadInt16();
if (tile_count <= 0 || 0 != flag)
{
return(null);
}
input.ReadInt32();
uint w = input.ReadUInt16();
uint h = input.ReadUInt16();
if (0 == w || 0 == h)
{
return(null);
}
var meta = new BipMetaData {
Width = w, Height = h, BPP = 32
};
meta.Tiles.Capacity = tile_count;
for (int i = 0; i < tile_count; ++i)
{
input.ReadInt64();
var tile = new BipTile();
tile.Left = input.ReadUInt16();
tile.Top = input.ReadUInt16();
tile.Width = input.ReadUInt16();
tile.Height = input.ReadUInt16();
if (tile.Left + tile.Width > meta.Width)
{
meta.Width = (uint)(tile.Left + tile.Width);
}
if (tile.Top + tile.Height > meta.Height)
{
meta.Height = (uint)(tile.Top + tile.Height);
}
input.ReadInt64();
tile.Offset = input.ReadUInt32() + data_offset;
meta.Tiles.Add(tile);
}
return(meta);
}
}
public override ImageMetaData ReadMetaData(Stream stream)
{
using (var input = new BinaryReader (stream, Encoding.ASCII, true))
{
int sig = input.ReadInt32();
if (sig != 5 && sig != 10)
return null;
uint header_end = (uint)sig*4;
uint index_offset = input.ReadUInt32();
input.BaseStream.Position = header_end-4;
uint data_offset = input.ReadUInt32() + 8;
if (index_offset >= data_offset || index_offset < header_end)
return null;
input.BaseStream.Position = index_offset;
int tile_count = input.ReadInt16();
int flag = input.ReadInt16();
if (tile_count <= 0 || 0 != flag)
return null;
input.ReadInt32();
uint w = input.ReadUInt16();
uint h = input.ReadUInt16();
if (0 == w || 0 == h)
return null;
var meta = new BipMetaData { Width = w, Height = h, BPP = 32 };
meta.Tiles.Capacity = tile_count;
for (int i = 0; i < tile_count; ++i)
{
input.ReadInt64();
var tile = new BipTile();
tile.Left = input.ReadUInt16();
tile.Top = input.ReadUInt16();
tile.Width = input.ReadUInt16();
tile.Height = input.ReadUInt16();
if (tile.Left + tile.Width > meta.Width)
meta.Width = (uint)(tile.Left + tile.Width);
if (tile.Top + tile.Height > meta.Height)
meta.Height = (uint)(tile.Top + tile.Height);
input.ReadInt64();
tile.Offset = input.ReadUInt32() + data_offset;
meta.Tiles.Add (tile);
}
return meta;
}
}