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-rw-r--r--cmake/src/base/UImage.pas194
1 files changed, 127 insertions, 67 deletions
diff --git a/cmake/src/base/UImage.pas b/cmake/src/base/UImage.pas
index 60b0a3a2..1866316e 100644
--- a/cmake/src/base/UImage.pas
+++ b/cmake/src/base/UImage.pas
@@ -34,7 +34,8 @@ interface
{$I switches.inc}
uses
- SDL;
+ SDL,
+ UPath;
{$DEFINE HavePNG}
{$DEFINE HaveBMP}
@@ -131,20 +132,20 @@ type
*******************************************************)
{$IFDEF HavePNG}
-function WritePNGImage(const FileName: string; Surface: PSDL_Surface): boolean;
+function WritePNGImage(const FileName: IPath; Surface: PSDL_Surface): boolean;
{$ENDIF}
{$IFDEF HaveBMP}
-function WriteBMPImage(const FileName: string; Surface: PSDL_Surface): boolean;
+function WriteBMPImage(const FileName: IPath; Surface: PSDL_Surface): boolean;
{$ENDIF}
{$IFDEF HaveJPG}
-function WriteJPGImage(const FileName: string; Surface: PSDL_Surface; Quality: integer): boolean;
+function WriteJPGImage(const FileName: IPath; Surface: PSDL_Surface; Quality: integer): boolean;
{$ENDIF}
(*******************************************************
* Image loading
*******************************************************)
-function LoadImage(const Filename: string): PSDL_Surface;
+function LoadImage(const Filename: IPath): PSDL_Surface;
(*******************************************************
* Image manipulation
@@ -181,6 +182,7 @@ uses
zlib,
sdl_image,
sdlutils,
+ sdlstreams,
UCommon,
ULog;
@@ -282,26 +284,26 @@ end;
procedure user_read_data(png_ptr: png_structp; data: png_bytep; length: png_size_t); cdecl;
var
- inFile: TFileStream;
+ inFile: TStream;
begin
- inFile := TFileStream(png_get_io_ptr(png_ptr));
+ inFile := TStream(png_get_io_ptr(png_ptr));
inFile.Read(data^, length);
end;
procedure user_write_data(png_ptr: png_structp; data: png_bytep; length: png_size_t); cdecl;
var
- outFile: TFileStream;
+ outFile: TStream;
begin
- outFile := TFileStream(png_get_io_ptr(png_ptr));
+ outFile := TStream(png_get_io_ptr(png_ptr));
outFile.Write(data^, length);
end;
procedure user_flush_data(png_ptr: png_structp); cdecl;
//var
-// outFile: TFileStream;
+// outFile: TStream;
begin
// binary files are flushed automatically, Flush() works with Text-files only
- //outFile := TFileStream(png_get_io_ptr(png_ptr));
+ //outFile := TStream(png_get_io_ptr(png_ptr));
//outFile.Flush();
end;
@@ -323,11 +325,11 @@ end;
(*
* ImageData must be in RGB-format
*)
-function WritePNGImage(const FileName: string; Surface: PSDL_Surface): boolean;
+function WritePNGImage(const FileName: IPath; Surface: PSDL_Surface): boolean;
var
png_ptr: png_structp;
info_ptr: png_infop;
- pngFile: TFileStream;
+ pngFile: TStream;
row: integer;
rowData: array of png_bytep;
// rowStride: integer;
@@ -339,9 +341,9 @@ begin
// open file for writing
try
- pngFile := TFileStream.Create(FileName, fmCreate);
+ pngFile := TBinaryFileStream.Create(FileName, fmCreate);
except
- Log.LogError('Could not open file: "' + FileName + '"', 'WritePngImage');
+ Log.LogError('Could not open file: "' + FileName.ToNative + '"', 'WritePngImage');
Exit;
end;
@@ -500,9 +502,9 @@ type
(*
* ImageData must be in BGR-format
*)
-function WriteBMPImage(const FileName: string; Surface: PSDL_Surface): boolean;
+function WriteBMPImage(const FileName: IPath; Surface: PSDL_Surface): boolean;
var
- bmpFile: TFileStream;
+ bmpFile: TStream;
FileInfo: BITMAPINFOHEADER;
FileHeader: BITMAPFILEHEADER;
Converted: boolean;
@@ -513,9 +515,9 @@ begin
// open file for writing
try
- bmpFile := TFileStream.Create(FileName, fmCreate);
+ bmpFile := TBinaryFileStream.Create(FileName, fmCreate);
except
- Log.LogError('Could not open file: "' + FileName + '"', 'WriteBMPImage');
+ Log.LogError('Could not open file: "' + FileName.ToNative + '"', 'WriteBMPImage');
Exit;
end;
@@ -579,7 +581,7 @@ begin
Result := true;
finally
- Log.LogError('Could not write file: "' + FileName + '"', 'WriteBMPImage');
+ Log.LogError('Could not write file: "' + FileName.ToNative + '"', 'WriteBMPImage');
end;
if (Converted) then
@@ -597,20 +599,21 @@ end;
{$IFDEF HaveJPG}
-function WriteJPGImage(const FileName: string; Surface: PSDL_Surface; Quality: integer): boolean;
+function WriteJPGImage(const FileName: IPath; Surface: PSDL_Surface; Quality: integer): boolean;
var
{$IFDEF Delphi}
- Bitmap: TBitmap;
+ Bitmap: TBitmap;
BitmapInfo: TBitmapInfo;
- Jpeg: TJpegImage;
- row: integer;
+ Jpeg: TJpegImage;
+ row: integer;
+ FileStream: TBinaryFileStream;
{$ELSE}
cinfo: jpeg_compress_struct;
jerr : jpeg_error_mgr;
- jpgFile: TFileStream;
+ jpgFile: TBinaryFileStream;
rowPtr: array[0..0] of JSAMPROW;
{$ENDIF}
- converted: boolean;
+ converted: boolean;
begin
Result := false;
@@ -669,19 +672,32 @@ begin
SDL_UnlockSurface(Surface);
// assign Bitmap to JPEG and store the latter
- Jpeg := TJPEGImage.Create;
- Jpeg.Assign(Bitmap);
- Bitmap.Free;
- Jpeg.CompressionQuality := Quality;
try
- // compress image (don't forget this line, otherwise it won't be compressed)
- Jpeg.Compress();
- Jpeg.SaveToFile(FileName);
+ // init with nil so Free() will not fail if an exception occurs
+ Jpeg := nil;
+ Bitmap := nil;
+ FileStream := nil;
+
+ try
+ Jpeg := TJPEGImage.Create;
+ Jpeg.Assign(Bitmap);
+
+ // compress image (don't forget this line, otherwise it won't be compressed)
+ Jpeg.CompressionQuality := Quality;
+ Jpeg.Compress();
+
+ // Note: FileStream needed for unicode filename support
+ FileStream := TBinaryFileStream.Create(Filename, fmCreate);
+ Jpeg.SaveToStream(FileStream);
+ finally
+ FileStream.Free;
+ Bitmap.Free;
+ Jpeg.Free;
+ end;
except
- Log.LogError('Could not save file: "' + FileName + '"', 'WriteJPGImage');
+ Log.LogError('Could not save file: "' + FileName.ToNative + '"', 'WriteJPGImage');
Exit;
end;
- Jpeg.Free;
{$ELSE}
// based on example.pas in FPC's packages/base/pasjpeg directory
@@ -703,9 +719,9 @@ begin
// open file for writing
try
- jpgFile := TFileStream.Create(FileName, fmCreate);
+ jpgFile := TBinaryFileStream.Create(FileName, fmCreate);
except
- Log.LogError('Could not open file: "' + FileName + '"', 'WriteJPGImage');
+ Log.LogError('Could not open file: "' + FileName.ToNative + '"', 'WriteJPGImage');
Exit;
end;
@@ -763,27 +779,29 @@ end;
(*
* Loads an image from the given file
*)
-function LoadImage(const Filename: string): PSDL_Surface;
+function LoadImage(const Filename: IPath): PSDL_Surface;
var
- FilenameFound: string;
+ FilenameCaseAdj: IPath;
+ FileStream: TBinaryFileStream;
+ SDLStream: PSDL_RWops;
begin
- Result := nil;
+ Result := nil;
- // FileExistsInsensitive() requires a var-arg
- FilenameFound := Filename;
-
- // try to find the file case insensitive
- if (not FileExistsInsensitive(FilenameFound)) then
+ // try to adjust filename's case and check if it exists
+ FilenameCaseAdj := Filename.AdjustCase(false);
+ if (not FilenameCaseAdj.IsFile) then
begin
- Log.LogError('Image-File does not exist "'+FilenameFound+'"', 'LoadImage');
+ Log.LogError('Image-File does not exist "' + FilenameCaseAdj.ToNative + '"', 'LoadImage');
Exit;
end;
// load from file
try
- Result := IMG_Load(PChar(FilenameFound));
+ SDLStream := SDLStreamSetup(TBinaryFileStream.Create(FilenameCaseAdj, fmOpenRead));
+ Result := IMG_Load_RW(SDLStream, 1);
+ // Note: TBinaryFileStream is freed by SDLStream. SDLStream by IMG_Load_RW().
except
- Log.LogError('Could not load from file "'+FilenameFound+'"', 'LoadImage');
+ Log.LogError('Could not load from file "' + FilenameCaseAdj.ToNative + '"', 'LoadImage');
Exit;
end;
end;
@@ -794,17 +812,13 @@ end;
function PixelFormatEquals(fmt1, fmt2: PSDL_PixelFormat): boolean;
begin
- if (fmt1^.BitsPerPixel = fmt2^.BitsPerPixel) and
- (fmt1^.BytesPerPixel = fmt2^.BytesPerPixel) and
- (fmt1^.Rloss = fmt2^.Rloss) and (fmt1^.Gloss = fmt2^.Gloss) and
- (fmt1^.Bloss = fmt2^.Bloss) and (fmt1^.Rmask = fmt2^.Rmask) and
- (fmt1^.Gmask = fmt2^.Gmask) and (fmt1^.Bmask = fmt2^.Bmask) and
- (fmt1^.Rshift = fmt2^.Rshift) and (fmt1^.Gshift = fmt2^.Gshift) and
- (fmt1^.Bshift = fmt2^.Bshift)
- then
- Result := true
- else
- Result := false;
+ Result :=
+ (fmt1^.BitsPerPixel = fmt2^.BitsPerPixel) and
+ (fmt1^.BytesPerPixel = fmt2^.BytesPerPixel) and
+ (fmt1^.Rloss = fmt2^.Rloss) and (fmt1^.Gloss = fmt2^.Gloss) and (fmt1^.Bloss = fmt2^.Bloss) and
+ (fmt1^.Rmask = fmt2^.Rmask) and (fmt1^.Gmask = fmt2^.Gmask) and (fmt1^.Bmask = fmt2^.Bmask) and
+ (fmt1^.Rshift = fmt2^.Rshift) and (fmt1^.Gshift = fmt2^.Gshift) and (fmt1^.Bshift = fmt2^.Bshift)
+ ;
end;
procedure ScaleImage(var ImgSurface: PSDL_Surface; Width, Height: cardinal);
@@ -885,7 +899,7 @@ begin
end;
*)
-procedure ColorizeImage(ImgSurface: PSDL_Surface; NewColor: cardinal);
+procedure ColorizeImage(ImgSurface: PSDL_Surface; NewColor: longword);
// First, the rgb colors are converted to hsv, second hue is replaced by
// the NewColor, saturation and value remain unchanged, finally this
@@ -893,7 +907,7 @@ procedure ColorizeImage(ImgSurface: PSDL_Surface; NewColor: cardinal);
// For the conversion algorithms of colors from rgb to hsv space
// and back simply check the wikipedia.
// In order to speed up starting time of USDX the division of reals is
- // replaced by division of longwords, shifted by 10 bits to keep
+ // replaced by division of longints, shifted by 10 bits to keep
// digits.
// The use of longwards leeds to some type size mismatch warnings
@@ -904,8 +918,8 @@ procedure ColorizeImage(ImgSurface: PSDL_Surface; NewColor: cardinal);
function ColorToHue(const Color: longword): longword;
// returns hue within the range [0.0-6.0] but shl 10, ie. times 1024
var
- Red, Green, Blue: longword;
- Min, Max, Delta: longword;
+ Red, Green, Blue: longint;
+ Min, Max, Delta: longint;
Hue: double;
begin
// extract the colors
@@ -933,6 +947,8 @@ procedure ColorizeImage(ImgSurface: PSDL_Surface; NewColor: cardinal);
// The division by Delta is done separately afterwards.
// Necessary because Delphi did not do the type conversion from
// longword to double as expected.
+ // After the change to longint, we may not need it, but left for now
+ // Something to check
if (Max = Red ) then Hue := Green - Blue
else if (Max = Green) then Hue := 2.0*Delta + Blue - Red
else if (Max = Blue ) then Hue := 4.0*Delta + Red - Green;
@@ -940,6 +956,8 @@ procedure ColorizeImage(ImgSurface: PSDL_Surface; NewColor: cardinal);
if (Hue < 0.0) then
Hue := Hue + 6.0;
Result := trunc(Hue*1024); // '*1024' is shl 10
+ // if NewColor = $000000 then
+ // Log.LogError ('Hue: ' + FloatToStr(Hue), 'ColorToHue');
end;
end;
@@ -952,6 +970,8 @@ var
Min, Max, Delta: longword;
HueInteger: longword;
f, p, q, t: longword;
+ GreyReal: real;
+ Grey: byte;
begin
Pixel := ImgSurface^.Pixels;
@@ -965,8 +985,48 @@ begin
Log.LogError ('ColorizeImage: The pixel size should be 4, but it is '
+ IntToStr(ImgSurface^.format.BytesPerPixel));
+ // Check whether the new color is white, grey or black,
+ // because a greyscale must be created in a different
+ // way.
+
+ Red := ((NewColor and $ff0000) shr 16); // R
+ Green := ((NewColor and $ff00) shr 8); // G
+ Blue := (NewColor and $ff) ; // B
+
+ if (Red = Green) and (Green = Blue) then // greyscale image
+ begin
+ // According to these recommendations (ITU-R BT.709-5)
+ // the conversion parameters for rgb to greyscale are
+ // 0.299, 0.587, 0.114
+ for PixelIndex := 0 to (ImgSurface^.W * ImgSurface^.H)-1 do
+ begin
+ PixelColors := PByteArray(Pixel);
+ {$IFDEF FPC_BIG_ENDIAN}
+ GreyReal := 0.299*PixelColors[3] + 0.587*PixelColors[2] + 0.114*PixelColors[1];
+ // PixelColors[0] is alpha and remains untouched
+ {$ELSE}
+ GreyReal := 0.299*PixelColors[0] + 0.587*PixelColors[1] + 0.114*PixelColors[2];
+ // PixelColors[3] is alpha and remains untouched
+ {$ENDIF}
+ Grey := round(GreyReal);
+ {$IFDEF FPC_BIG_ENDIAN}
+ PixelColors[3] := Grey;
+ PixelColors[2] := Grey;
+ PixelColors[1] := Grey;
+ // PixelColors[0] is alpha and remains untouched
+ {$ELSE}
+ PixelColors[0] := Grey;
+ PixelColors[1] := Grey;
+ PixelColors[2] := Grey;
+ // PixelColors[3] is alpha and remains untouched
+ {$ENDIF}
+ Inc(Pixel, ImgSurface^.format.BytesPerPixel);
+ end;
+ exit; // we are done with a greyscale image.
+ end;
+
Hue := ColorToHue(NewColor); // Hue is shl 10
- f := Hue and $3ff; // f is the dezimal part of hue
+ f := Hue and $3ff; // f is the dezimal part of hue
HueInteger := Hue shr 10;
for PixelIndex := 0 to (ImgSurface^.W * ImgSurface^.H)-1 do
@@ -1036,9 +1096,9 @@ begin
// shr 10 corrects that Sat and f are shl 10
// the resulting p, q and t are unshifted
- p := (Max*(1024-Sat)) shr 10;
- q := (Max*(1024-(Sat*f) shr 10)) shr 10;
- t := (Max*(1024-(Sat*(1024-f)) shr 10)) shr 10;
+ p := (Max * (1024 - Sat )) shr 10;
+ q := (Max * (1024 - (Sat * f ) shr 10)) shr 10;
+ t := (Max * (1024 - (Sat * (1024 - f)) shr 10)) shr 10;
// The above 3 lines give type size mismatch warning, but all variables are longword and the ranges should be ok.
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-29 10:33:42 +0000