I ve create this function (it s in pascal, but it s same in c)
///////////// displayJPG /////////////
function displayJPG(name:String;x,y:UInt16):boolean;
procedure
BmpSetTransparentValue(bitmapP:BitmapPtr;transparentValue:UInt32);
inline($7406,SYSTRAP,HIGH_DENSITY_TRAP);
{$i pnojpeglib.pas}
var
AppJpgRefnum:UInt16;
globals:globalsType;
time:String;
data:Pointer;
path:String;
vfsslot:UInt32;
dirslot:UInt32;
idvfs:UInt16;
BitmapP:BitmapPtr;
BitmapV3P:BitmapPtrV3;
BitmapV3V1P:record
case integer of
1:(bitmapv1:BitmapPtr);
2:(bitmapv3:BitmapPtrV3);
end;
//end;
rgb:RGBColorType;
error:Err;
begin
displayJPG:=false;
rgb.index:=0;
rgb.r:=255;
rgb.g:=255;
rgb.b:=255;
vfsslot:=vfsIteratorStart;
VFSVolumeEnumerate(idvfs,vfsslot);
AppJpgRefnum:=0;
error:=SysLibFind('pnoJpegLib',AppJpgRefnum);
FtrGet(CurAppCreator,0,globals.p);
path:='/PALM/Programs/kLauncher/Skins/'+globals.g^.prefs.SkinName+'/'+name;
if error=($0500 or 10) then
Error:=sysLibLoad(pnoJpegLibType,pnoJpegLibCreator,AppJpgRefnum);
if error=0 then begin
error:=pnoJpegOpen(AppJpgRefnum);
if error=0 then begin
pnoJpeg2Create(AppJpgRefnum,data);
if error=0 then begin
vfsslot:=vfsIteratorStart;
error:=1;
while (vfsslot<>vfsIteratorStop) AND (error<>0) do begin
VFSVolumeEnumerate(idvfs,vfsslot);
error:=pnoJpeg2LoadFromVFS(AppJpgRefnum,data,idvfs,path);
end;
if error=0 then begin
BitmapV3V1P.bitmapv1:=MemPtrNew(sizeof(BitmapTypeV3));
error:=pnoJpeg2Read(AppJpgRefnum,data,BitmapV3V1P.bitmapv1);
if error=0 then begin
pnoJpeg2Bmp2DoubleDensity(AppJpgRefnum,BitmapV3V1P.bitmapv1,BitmapV3V1P.bitmapv3);
BmpSetTransparentValue(BitmapV3V1P.bitmapv1,RgbTo565(rgb));
WinDrawBitmap(BitmapV3V1P.bitmapv1,x,y);
displayJPG:=true;
MemPtrFree(BitmapV3V1P.bitmapv1);
end;
end;
pnoJpeg2Free(AppJpgRefnum,data);
end;
pnoJpegClose(AppJpgRefnum);
end;
SysLibRemove(AppJpgRefnum);
end;
end;
I explain too how to use pnojpeglib with pp on my site.
...... Original Message .......
On Tue, 29 May 2007 21:35:00 +0200 ""Tam Hanna"" <[EMAIL PROTECTED]> wrote:
>Dear Guys and Gals,
>I use the pnoJpeg2Lib to decompress 320x320px jpeg images on a Palm Treo 680.
>Decompression
works well, but drawing the bitmap to a window produces very weird results.
>
>The handheld draws only the top quarter of the bitmap. I have tried playing
>around with the
window and bitmap coordinate systems to no avail - could anyone point me in the
right direction?
>
>Best regards and thank you
>Tam Hanna
>
>
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___
Benoit HERVIER
http://www.khertan.net
Sent from my Palm
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