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Diffstat (limited to '')
-rw-r--r-- | src/lib/JEDI-SDL/SDL/Pas/sdlstreams.pas | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/src/lib/JEDI-SDL/SDL/Pas/sdlstreams.pas b/src/lib/JEDI-SDL/SDL/Pas/sdlstreams.pas deleted file mode 100644 index 8ba3946f..00000000 --- a/src/lib/JEDI-SDL/SDL/Pas/sdlstreams.pas +++ /dev/null @@ -1,216 +0,0 @@ -unit sdlstreams; -{ - $Id: sdlstreams.pas,v 1.1 2004/02/05 00:08:20 savage Exp $ - -} -{******************************************************************} -{ } -{ SDL - Simple DirectMedia Layer } -{ Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga } -{ } -{ Portions created by Chris Bruner are } -{ Copyright (C) 2002 Chris Bruner. } -{ } -{ Contributor(s) } -{ -------------- } -{ } -{ } -{ Obtained through: } -{ Joint Endeavour of Delphi Innovators ( Project JEDI ) } -{ } -{ You may retrieve the latest version of this file at the Project } -{ JEDI home page, located at http://delphi-jedi.org } -{ } -{ The contents of this file are used with permission, subject to } -{ the Mozilla Public License Version 1.1 (the "License"); you may } -{ not use this file except in compliance with the License. You may } -{ obtain a copy of the License at } -{ http://www.mozilla.org/NPL/NPL-1_1Final.html } -{ } -{ Software distributed under the License is distributed on an } -{ "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or } -{ implied. See the License for the specific language governing } -{ rights and limitations under the License. } -{ } -{ Description } -{ ----------- } -{ Shows how to use OpenGL to do 2D and 3D with the SDL libraries } -{ } -{ } -{ Requires } -{ -------- } -{ SDL runtime libary somewhere in your path } -{ The Latest SDL runtime can be found on http://www.libsdl.org } -{ } -{ Programming Notes } -{ ----------------- } -{ } -{ } -{ } -{ } -{ } -{ Revision History } -{ ---------------- } -{ January 11 2002 - CB : Software embraced and extended by } -{ Chris Bruner of Crystal Software } -{ (Canada) Inc. } -{ } -{ February 11 2002 - DL : Added FreePascal support as suggested } -{ by "QuePasha Pepe" <mrkroket@hotmail.com> } -{ } -{******************************************************************} -{ - $Log: sdlstreams.pas,v $ - Revision 1.1 2004/02/05 00:08:20 savage - Module 1.0 release - - -} - -{$i jedi-sdl.inc} - -interface - -uses - Classes, - SysUtils, - sdl, - sdlutils; - -{$IFDEF FPC} -type - EinvalidContainer=class(Exception); - {$ENDIF} - -function LoadSDLBMPFromStream( Stream : TStream ) : PSDL_Surface; -procedure SaveSDLBMPToStream( SDL_Surface : PSDL_Surface; stream : TStream ); -function SDL_Swap16( D : UInt16 ) : Uint16; -function SDL_Swap32( D : UInt32 ) : Uint32; -function SDLStreamSetup( stream : TStream ) : PSDL_RWops; -// this only closes the SDL_RWops part of the stream, not the stream itself -procedure SDLStreamCloseRWops( SDL_RWops : PSDL_RWops ); - -implementation - -function SDL_Swap16( D : UInt16 ) : Uint16; -begin - Result := ( D shl 8 ) or ( D shr 8 ); -end; - -function SDL_Swap32( D : UInt32 ) : Uint32; -begin - Result := ( ( D shl 24 ) or ( ( D shl 8 ) and $00FF0000 ) or ( ( D shr 8 ) and $0000FF00 ) or ( D shr 24 ) ); -end; - -(*function SDL_Swap64(D : UInt64) : Uint64; -var hi,lo : Uint32; -begin - // Separate into high and low 32-bit resultues and swap them - lo := Uint32(D and $0FFFFFFFF); // bloody pascal is too tight in it's type checking! - D := D shr 32; - hi = Uint32((D and $FFFFFFFF)); - result = SDL_Swap32(lo); - result := result shl 32; - result := result or SDL_Swap32(hi); -end; -*) - -function SdlStreamSeek( context : PSDL_RWops; offset : Integer; whence : Integer ) : integer; cdecl; -var - stream : TStream; - origin : Word; -begin - stream := TStream( context.unknown ); - if ( stream = nil ) then - raise EInvalidContainer.Create( 'SDLStreamSeek on nil' ); - case whence of - 0 : origin := soFromBeginning; // Offset is from the beginning of the resource. Seek moves to the position Offset. Offset must be >= 0. - 1 : origin := soFromCurrent; // Offset is from the current position in the resource. Seek moves to Position + Offset. - 2 : origin := soFromEnd; - else - origin := soFromBeginning; // just in case - end; - Result := stream.Seek( offset, origin ); -end; - -function SDLStreamWrite( context : PSDL_RWops; Ptr : Pointer; - size : Integer; num : Integer ) : Integer; cdecl; -var - stream : TStream; -begin - stream := TStream( context.unknown ); - if ( stream = nil ) then - raise EInvalidContainer.Create( 'SDLStreamWrite on nil' ); - try - Result := stream.Write( Ptr^, Size * num ) div size; - except - Result := -1; - end; -end; - -function SdlStreamRead( context : PSDL_RWops; Ptr : Pointer; size : Integer; maxnum - : Integer ) : Integer; cdecl; -var - stream : TStream; -begin - stream := TStream( context.unknown ); - if ( stream = nil ) then - raise EInvalidContainer.Create( 'SDLStreamRead on nil' ); - try - Result := stream.read( Ptr^, Size * maxnum ) div size; - except - Result := -1; - end; -end; - -function SDLStreamClose( context : PSDL_RWops ) : Integer; cdecl; -var - stream : TStream; -begin - stream := TStream( context.unknown ); - if ( stream = nil ) then - raise EInvalidContainer.Create( 'SDLStreamClose on nil' ); - stream.Free; - Result := 1; -end; - -function SDLStreamSetup( stream : TStream ) : PSDL_RWops; -begin - result := SDL_AllocRW; - if ( result = nil ) then - raise EInvalidContainer.Create( 'could not create SDLStream on nil' ); - result.unknown := TUnknown( stream ); - result.seek := SDLStreamSeek; - result.read := SDLStreamRead; - result.write := SDLStreamWrite; - result.close := SDLStreamClose; - Result.type_ := 2; // TUnknown -end; - -// this only closes the SDL part of the stream, not the context - -procedure SDLStreamCloseRWops( SDL_RWops : PSDL_RWops ); -begin - SDL_FreeRW( SDL_RWops ); -end; - -function LoadSDLBMPFromStream( stream : TStream ) : PSDL_Surface; -var - SDL_RWops : PSDL_RWops; -begin - SDL_RWops := SDLStreamSetup( stream ); - result := SDL_LoadBMP_RW( SDL_RWops, 0 ); - SDLStreamCloseRWops( SDL_RWops ); -end; - -procedure SaveSDLBMPToStream( SDL_Surface : PSDL_Surface; stream : TStream ); -var - SDL_RWops : PSDL_RWops; -begin - SDL_RWops := SDLStreamSetup( stream ); - SDL_SaveBMP_RW( SDL_Surface, SDL_RWops, 0 ); - SDLStreamCloseRWops( SDL_RWops ); -end; - -end. - |