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-- Allocation
the_Image.Data := new Byte_Array (0 .. (Image_Bits / 8) * the_Image.size - 1);
getData (Image_Bits, the_Image.Data.all);
return the_Image;
end To_TGA_Image;
function To_TGA_Image (Filename : String) return Image is
f : File_Type;
the_Image : Image;
begin
begin
Open (f, In_File, Filename);
exception
when Name_Error => Raise_Exception (File_Not_Found'Identity, " file name:" & Filename);
Function Definition: procedure i_Load_TGA is new Load_XXX (Stream_Loader => Load_TGA);
Function Body: procedure Load_TGA (Name : String; Id : Integer; blending_hint : out Boolean) renames i_Load_TGA;
-- BMP
procedure Load_BMP (S : Ada.Streams.Stream_IO.Stream_Access; -- Input data stream
Id : Integer; -- Id is the texture identifier to bind to
blending_hint : out Boolean) is -- has the image blending / transparency /alpha ?
imageData : Byte_Array_Ptr := null;
stream_buf : Input_buffer;
subtype Y_Loc is Natural range 0 .. 4095;
subtype X_Loc is Natural range 0 .. 4095;
-- 256 - col types
subtype Color_Type is GL.Ubyte;
type RGB_Color_Bytes is
record
Red : Color_Type;
Green : Color_Type;
Blue : Color_Type;
end record;
type Color_Palette is array (Color_Type) of RGB_Color_Bytes;
Palette : Color_Palette;
----------------------------------------------------
-- BMP format I/O --
-- --
-- Rev 1.5 10 - May - 2006 GdM : added 4 - bit support --
-- Rev 1.4 11/02/99 RBS --
-- --
----------------------------------------------------
-- Coded by G. de Montmollin
-- Code additions, changes, and corrections by Bob Sutton
--
-- Remarks expanded and altered
-- Provided for scanline padding in data stream
-- Corrected stream reading for images exceeding screen size.
-- Provided selectable trim modes for oversize images
-- Procedures originally Read_BMP_dimensions now Read_BMP_Header
-- Some exceptions added
--
-- Rev 1.2 RBS. Added variable XY screen location for BMP
-- Rev 1.3 RBS. Added image inversion & reversal capability
-- Rev 1.4 RBS. Activated LOCATE centering / clipping options
--
-- This version presumes that the infile is a new style, 256 color bitmap.
-- The Bitmap Information Header structure (40 bytes) is presumed
-- instead of the pre - Windows 3.0 Bitmap Core Header Structure (12 Bytes)
-- Pos 15 (0EH), if 28H, is valid BIH structure. If 0CH, is BCH structure.
procedure Read_BMP_Header (S : Stream_Access;
width : out X_Loc;
height : out Y_Loc;
image_bits : out Integer;
offset : out U32) is
fsz : U32;
ih : U32;
w, dummy16 : U16;
n : U32;
Str2 : String (1 .. 2);
Str4 : String (1 .. 4);
Str20 : String (1 .. 20);
-- Get numbers with correct trucmuche endian, to ensure
-- correct header loading on some non - Intel machines
generic
type Number is mod <>; -- range <> in Ada83 version (fake Interfaces)
procedure Read_Intel_x86_number (n : out Number);
procedure Read_Intel_x86_number (n : out Number) is
b : GL.Ubyte;
m : Number := 1;