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304 | with Ada.Calendar;
with Ada.Text_IO.Text_Streams;
with Ada.Unchecked_Conversion;
with Interfaces.C;
with SDL;
with SDL.Log;
with SDL.Video.Palettes;
with SDL.Video.Pixel_Formats;
with SDL.Video.Pixels;
with SDL.Video.Renderers.Makers;
with SDL.Video.Textures.Makers;
with SDL.Video.Windows.Makers;
with System;
procedure Stream is
use type SDL.Dimension;
use type SDL.Positive_Sizes;
type Moose_Frames is mod 10;
type Moose_Colour_Index is range 1 .. 84;
type Moose_Palette_Array is array (Moose_Colour_Index'Range) of SDL.Video.Palettes.RGB_Colour;
W : SDL.Video.Windows.Window;
Moose_Size : constant SDL.Positive_Sizes := (64, 88);
Moose_Frame_Size : constant SDL.Dimension := (Moose_Size.Width * Moose_Size.Height) - 1;
Moose_Frame : Moose_Frames := Moose_Frames'First;
Moose_Palette : constant Moose_Palette_Array :=
((49, 49, 49), (66, 24, 0), (66, 33, 0), (66, 66, 66),
(66, 115, 49), (74, 33, 0), (74, 41, 16), (82, 33, 8),
(82, 41, 8), (82, 49, 16), (82, 82, 82), (90, 41, 8),
(90, 41, 16), (90, 57, 24), (99, 49, 16), (99, 66, 24),
(99, 66, 33), (99, 74, 33), (107, 57, 24), (107, 82, 41),
(115, 57, 33), (115, 66, 33), (115, 66, 41), (115, 74, 0),
(115, 90, 49), (115, 115, 115), (123, 82, 0), (123, 99, 57),
(132, 66, 41), (132, 74, 41), (132, 90, 8), (132, 99, 33),
(132, 99, 66), (132, 107, 66), (140, 74, 49), (140, 99, 16),
(140, 107, 74), (140, 115, 74), (148, 107, 24), (148, 115, 82),
(148, 123, 74), (148, 123, 90), (156, 115, 33), (156, 115, 90),
(156, 123, 82), (156, 132, 82), (156, 132, 99), (156, 156, 156),
(165, 123, 49), (165, 123, 90), (165, 132, 82), (165, 132, 90),
(165, 132, 99), (165, 140, 90), (173, 132, 57), (173, 132, 99),
(173, 140, 107), (173, 140, 115), (173, 148, 99), (173, 173, 173),
(181, 140, 74), (181, 148, 115), (181, 148, 123), (181, 156, 107),
(189, 148, 123), (189, 156, 82), (189, 156, 123), (189, 156, 132),
(189, 189, 189), (198, 156, 123), (198, 165, 132), (206, 165, 99),
(206, 165, 132), (206, 173, 140), (206, 206, 206), (214, 173, 115),
(214, 173, 140), (222, 181, 148), (222, 189, 132), (222, 189, 156),
(222, 222, 222), (231, 198, 165), (231, 231, 231), (239, 206, 173));
type Moose_Frame_Data_Array is array (Moose_Frames'Range, 0 .. Moose_Frame_Size) of Moose_Colour_Index;
Moose_Frame_Data : Moose_Frame_Data_Array;
procedure Load_Moose_Data (Data : out Moose_Frame_Data_Array) is
Actual_Name : constant String := "../../test/moose.dat";
Data_File : Ada.Text_IO.File_Type;
Stream : Ada.Text_IO.Text_Streams.Stream_Access := null;
use type Ada.Text_IO.File_Mode;
begin
Ada.Text_IO.Open (File => Data_File, Mode => Ada.Text_IO.In_File, Name => Actual_Name);
Stream := Ada.Text_IO.Text_Streams.Stream (File => Data_File);
Moose_Frame_Data_Array'Read (Stream, Data);
Ada.Text_IO.Close (File => Data_File);
exception
when others =>
SDL.Log.Put_Error ("Error, reading source file, " & Actual_Name);
raise;
end Load_Moose_Data;
Renderer : SDL.Video.Renderers.Renderer;
Texture : SDL.Video.Textures.Texture;
Pixels : SDL.Video.Pixels.ARGB_8888_Access.Pointer;
procedure Lock is new SDL.Video.Textures.Lock (Pixel_Pointer_Type => SDL.Video.Pixels.ARGB_8888_Access.Pointer);
use type SDL.Video.Pixels.ARGB_8888_Access.Pointer;
use type Ada.Calendar.Time;
-- This uses the same algorithm as the original teststream.c. It copies 1 pixel at a time, indexing into the moose
-- palette using the data from moose.dat.
procedure Update_Texture_1 (Pointer : in SDL.Video.Pixels.ARGB_8888_Access.Pointer) is
Start_Time : Ada.Calendar.Time;
End_Time : Ada.Calendar.Time;
Colour : SDL.Video.Palettes.RGB_Colour;
begin
Start_Time := Ada.Calendar.Clock;
for Y in 1 .. Moose_Size.Height loop
declare
Dest : SDL.Video.Pixels.ARGB_8888_Access.Pointer :=
Pointer + Interfaces.C.ptrdiff_t ((Y - 1) * Moose_Size.Width);
begin
for X in 1 .. Moose_Size.Width loop
Colour := Moose_Palette (Moose_Frame_Data (Moose_Frame, ((Y - 1) * Moose_Size.Width) + (X - 1)));
Dest.all := SDL.Video.Pixels.ARGB_8888'(Red => Colour.Red,
Green => Colour.Green,
Blue => Colour.Blue,
Alpha => SDL.Video.Palettes.Colour_Component'Last);
SDL.Video.Pixels.ARGB_8888_Access.Increment (Dest);
end loop;
end;
end loop;
End_Time := Ada.Calendar.Clock;
SDL.Log.Put_Debug ("Update_Texture_1 took " & Duration'Image (End_Time - Start_Time) & " seconds.");
end Update_Texture_1;
type Texture_2D_Array is array (SDL.Dimension range <>, SDL.Dimension range <>) of
aliased SDL.Video.Pixels.ARGB_8888;
package Texture_2D is new SDL.Video.Pixels.Texture_Data
(Index => SDL.Dimension,
Element => SDL.Video.Pixels.ARGB_8888,
Element_Array_1D => SDL.Video.Pixels.ARGB_8888_Array,
Element_Array_2D => Texture_2D_Array,
Default_Terminator => SDL.Video.Pixels.ARGB_8888'(others => SDL.Video.Palettes.Colour_Component'First));
procedure Update_Texture_2 (Pointer : in Texture_2D.Pointer) is
pragma Unreferenced (Pointer); -- TODO: Fix me!
function To_Address is new Ada.Unchecked_Conversion (Source => SDL.Video.Pixels.ARGB_8888_Access.Pointer,
Target => System.Address);
Start_Time : Ada.Calendar.Time;
End_Time : Ada.Calendar.Time;
Colour : SDL.Video.Palettes.RGB_Colour;
Actual_Pixels : Texture_2D_Array (1 .. Moose_Size.Height, 1 .. Moose_Size.Width) with
Address => To_Address (Pixels);
begin
Start_Time := Ada.Calendar.Clock;
for Y in 1 .. Moose_Size.Height loop
for X in 1 .. Moose_Size.Width loop
Colour := Moose_Palette (Moose_Frame_Data (Moose_Frame, ((Y - 1) * Moose_Size.Width) + (X - 1)));
Actual_Pixels (Y, X) := SDL.Video.Pixels.ARGB_8888'(Red => Colour.Red,
Green => Colour.Green,
Blue => Colour.Blue,
Alpha => SDL.Video.Palettes.Colour_Component'Last);
end loop;
end loop;
End_Time := Ada.Calendar.Clock;
SDL.Log.Put_Debug ("Update_Texture_2 took " & Duration'Image (End_Time - Start_Time) & " seconds.");
end Update_Texture_2;
type Cached_Moose_Frame_Array is array (Moose_Frames) of
Texture_2D_Array (1 .. Moose_Size.Height, 1 .. Moose_Size.Width);
procedure Cache_Moose (Cache : in out Cached_Moose_Frame_Array;
Indices : in Moose_Frame_Data_Array;
Palette : in Moose_Palette_Array) is
Colour : SDL.Video.Palettes.RGB_Colour;
begin
for Frame in Moose_Frames loop
for Y in 1 .. Moose_Size.Height loop
for X in 1 .. Moose_Size.Width loop
Colour := Palette (Indices (Frame, ((Y - 1) * Moose_Size.Width) + (X - 1)));
Cache (Frame) (Y, X) := SDL.Video.Pixels.ARGB_8888'(Red => Colour.Red,
Green => Colour.Green,
Blue => Colour.Blue,
Alpha => SDL.Video.Palettes.Colour_Component'Last);
end loop;
end loop;
end loop;
end Cache_Moose;
Cache : Cached_Moose_Frame_Array;
begin
SDL.Log.Set (Category => SDL.Log.Application, Priority => SDL.Log.Debug);
Load_Moose_Data (Data => Moose_Frame_Data);
Cache_Moose (Cache, Moose_Frame_Data, Moose_Palette);
if SDL.Initialise = True then
SDL.Video.Windows.Makers.Create (Win => W,
Title => "Stream (Moose animation)",
Position => SDL.Natural_Coordinates'(X => 100, Y => 100),
Size => Moose_Size * 4,
Flags => SDL.Video.Windows.Resizable);
SDL.Video.Renderers.Makers.Create (Renderer, W);
SDL.Video.Textures.Makers.Create (Tex => Texture,
Renderer => Renderer,
Format => SDL.Video.Pixel_Formats.Pixel_Format_ARGB_8888,
Kind => SDL.Video.Textures.Streaming,
Size => Moose_Size);
-- W.Set_Mode (SDL.Video.Windows.Full_Screen);
-- First test.
for Index in 1 .. 10 loop
Lock (Texture, Pixels);
-- The block makes things a bit clearer.
begin
Update_Texture_1 (Pixels);
end;
Texture.Unlock;
Renderer.Clear;
Renderer.Copy (Texture);
Renderer.Present;
Moose_Frame := Moose_Frame + 1;
-- if Moose_Frame = Moose_Frame'Last then
-- Pixel := Data.Element_Array (0)'Access;
-- end if;
delay 0.05;
end loop;
Renderer.Clear;
Renderer.Present;
delay 0.7;
SDL.Log.Put_Debug ("");
-- Second test.
for Index in 1 .. 10 loop
Lock (Texture, Pixels);
-- The block makes things a bit clearer.
begin
Update_Texture_2 (Texture_2D.Pointer (Pixels));
end;
Texture.Unlock;
Renderer.Clear;
Renderer.Copy (Texture);
Renderer.Present;
Moose_Frame := Moose_Frame + 1;
-- if Moose_Frame = Moose_Frame'Last then
-- Pixel := Data.Element_Array (0)'Access;
-- end if;
delay 0.05;
end loop;
Renderer.Clear;
Renderer.Present;
delay 0.7;
SDL.Log.Put_Debug ("");
-- Third test.
for Index in 1 .. 100 loop
Lock (Texture, Pixels);
-- The block makes things a bit clearer.
Update_Texture_3 : declare
function To_Address is new Ada.Unchecked_Conversion (Source => SDL.Video.Pixels.ARGB_8888_Access.Pointer,
Target => System.Address);
Start_Time : Ada.Calendar.Time;
End_Time : Ada.Calendar.Time;
Actual_Pixels : Texture_2D_Array (1 .. Moose_Size.Height, 1 .. Moose_Size.Width) with
Address => To_Address (Pixels);
begin
Start_Time := Ada.Calendar.Clock;
Actual_Pixels := Cache (Moose_Frame);
End_Time := Ada.Calendar.Clock;
SDL.Log.Put_Debug ("Update_Texture_3 took " & Duration'Image (End_Time - Start_Time) & " seconds.");
end Update_Texture_3;
Texture.Unlock;
Renderer.Clear;
Renderer.Copy (Texture);
Renderer.Present;
Moose_Frame := Moose_Frame + 1;
-- if Moose_Frame = Moose_Frame'Last then
-- Pixel := Data.Element_Array (0)'Access;
-- end if;
delay 0.05;
end loop;
W.Finalize;
SDL.Finalise;
end if;
end Stream;
|