Creer Jpg a partir d'HEXA
Résolu
papyvore
Messages postés
223
Date d'inscription
samedi 15 novembre 2003
Statut
Membre
Dernière intervention
16 décembre 2021
-
Modifié par papyvore le 10/01/2016 à 10:53
Cirec Messages postés 3833 Date d'inscription vendredi 23 juillet 2004 Statut Modérateur Dernière intervention 18 septembre 2022 - 10 janv. 2016 à 18:00
Cirec Messages postés 3833 Date d'inscription vendredi 23 juillet 2004 Statut Modérateur Dernière intervention 18 septembre 2022 - 10 janv. 2016 à 18:00
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8 réponses
Cirec
Messages postés
3833
Date d'inscription
vendredi 23 juillet 2004
Statut
Modérateur
Dernière intervention
18 septembre 2022
50
10 janv. 2016 à 11:47
10 janv. 2016 à 11:47
Salut,
essayes comme ceci :
j'ai pas testé mais ça devrait résoudre ton problème ;)
essayes comme ceci :
var
EncdStream: TMemoryStream;
Jpeg: TJPEGImage;
format : integer;
begin
EncdStream := TMemoryStream.Create;
try
// Modification:
Jpeg := TJPEGImage.Create;
try
Memo1.Lines.SaveToStream(EncdStream,TEncoding.Default) ;
Jpeg.LoadFromStream(EncdStream);
Image1.Picture.Assign(Jpeg);
finally
Jpeg.Free;
end;
finally
EncdStream.Free;
end;
end;
j'ai pas testé mais ça devrait résoudre ton problème ;)
papyvore
Messages postés
223
Date d'inscription
samedi 15 novembre 2003
Statut
Membre
Dernière intervention
16 décembre 2021
15
10 janv. 2016 à 13:58
10 janv. 2016 à 13:58
salut
avec ce code j'ai une erreur #42,
j'ai rajouté
EncdStream.Seek(0,soFromBeginning);
et
memo2.Lines.LoadFromStream(EncdStream); (pour vérif)
la copie dans memo2 est correcte
et j'ai une erreur #53 qui doit être une erreur mémoire ???
ici Jpeg.LoadFromStream(EncdStream);
merci
avec ce code j'ai une erreur #42,
j'ai rajouté
EncdStream.Seek(0,soFromBeginning);
et
memo2.Lines.LoadFromStream(EncdStream); (pour vérif)
la copie dans memo2 est correcte
et j'ai une erreur #53 qui doit être une erreur mémoire ???
ici Jpeg.LoadFromStream(EncdStream);
merci
Cirec
Messages postés
3833
Date d'inscription
vendredi 23 juillet 2004
Statut
Modérateur
Dernière intervention
18 septembre 2022
50
10 janv. 2016 à 15:40
10 janv. 2016 à 15:40
re,
peux tu poster l'image sous forme de texte pour pouvoir tester ?
peux tu poster l'image sous forme de texte pour pouvoir tester ?
papyvore
Messages postés
223
Date d'inscription
samedi 15 novembre 2003
Statut
Membre
Dernière intervention
16 décembre 2021
15
Modifié le 29 nov. 2017 à 16:03
Modifié le 29 nov. 2017 à 16:03
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4CF14E8F93934099FFD9 <signature>papyvore</signature>
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Cirec
Messages postés
3833
Date d'inscription
vendredi 23 juillet 2004
Statut
Modérateur
Dernière intervention
18 septembre 2022
50
10 janv. 2016 à 15:59
10 janv. 2016 à 15:59
ok, Merci ;)
question:
les retours chariots et les lignes vides sont elles vraiment présentes dans dans fichier original ?
ou c'est juste la copie ici qui a "foirée" ?
question:
les retours chariots et les lignes vides sont elles vraiment présentes dans dans fichier original ?
ou c'est juste la copie ici qui a "foirée" ?
Cirec
Messages postés
3833
Date d'inscription
vendredi 23 juillet 2004
Statut
Modérateur
Dernière intervention
18 septembre 2022
50
10 janv. 2016 à 16:24
10 janv. 2016 à 16:24
Voici la solution testé OK sous D7:
implementation
{$R *.dfm}
function ExcludeChars(const S : string; const CS : TSysCharSet): string;
var
P, PR : {$IFDEF UNICODE}PWord;{$ELSE}PByte;{$ENDIF}
Size, I : Integer;
begin
P := {$IFDEF UNICODE}PWord{$ELSE}PByte{$ENDIF}(S);
Size := Length(S);
SetLength(Result, Size);
PR := {$IFDEF UNICODE}PWord{$ELSE}PByte{$ENDIF}(Result);
I := 0;
while P^ <> $0 do begin
if not (Chr(P^) in CS) then begin
Pr^ := P^;
Inc(Pr);
end
else Inc(I);
Inc(P);
end;
if I > 0 then SetLength(Result, Size - I)
end;
procedure StrToImage(aStrImage: AnsiString; aImage: TImage);
// cette fonction ne sert qu'à afficher une image Jpeg contenue dans une string
var MS: TMemoryStream;
JPG: TJPEGImage;
begin
if aStrImage = '' then
Exit;
MS := TMemoryStream.Create;
with MS do
try
SetSize(Length(astrImage));
MoveMemory(Memory, PByte(aStrImage), Length(astrImage));
Seek(0, soFromBeginning);
SaveToFile('test.jpg');
if (aImage.Picture.Graphic is TJPEGImage) then
TJPEGImage(aImage.Picture.Graphic).LoadFromStream(MS)
else
begin
JPG := TJPEGImage.Create;
try
JPG.LoadFromStream(MS);
aImage.Picture.Assign(JPG);
finally
JPG.Free;
end;
end;
finally
Free;
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
var
aStr: string;
begin
Memo1.Text := ExcludeChars(Memo1.Text, [#13, #10]);
SetLength(aStr, Length(Memo1.Text));
HexToBin(PChar(Memo1.Text), PChar(aStr), Length(aStr));
StrToImage(aStr, Image1);
end;
end.
papyvore
Messages postés
223
Date d'inscription
samedi 15 novembre 2003
Statut
Membre
Dernière intervention
16 décembre 2021
15
10 janv. 2016 à 17:40
10 janv. 2016 à 17:40
Super
merci OK en D7 je vais regarder si je peu transposer XE8.
pour les retours chariots et les lignes blanches c'est une erreur que j'ai fait en créant le fichier txt.
merci encore
merci OK en D7 je vais regarder si je peu transposer XE8.
pour les retours chariots et les lignes blanches c'est une erreur que j'ai fait en créant le fichier txt.
merci encore
Cirec
Messages postés
3833
Date d'inscription
vendredi 23 juillet 2004
Statut
Modérateur
Dernière intervention
18 septembre 2022
50
10 janv. 2016 à 18:00
10 janv. 2016 à 18:00
re,
dans ce cas tu peux te passer de la ligne suivante:
au pire il faut changer les string en AnsiString
et les PChar en PAnsiChar
Voilà ... si ça te convient n'oublie pas de cliquer sur "Marquer comme résolu"
Merci
pour les retours chariots et les lignes blanches c'est une erreur que j'ai fait en créant le fichier txt.
dans ce cas tu peux te passer de la ligne suivante:
Memo1.Text := ExcludeChars(Memo1.Text, [#13, #10]);et du même coup de la fonction ExcludeChars
merci OK en D7 je vais regarder si je peu transposer XE8ça devrait passer tel quel !!
au pire il faut changer les string en AnsiString
et les PChar en PAnsiChar
procedure TForm1.Button1Click(Sender: TObject); var aStr: AnsiString; begin SetLength(aStr, Length(Memo1.Text)); HexToBin(PAnsiChar(Memo1.Text), PAnsiChar(aStr), Length(aStr)); StrToImage(aStr, Image1); end;
Voilà ... si ça te convient n'oublie pas de cliquer sur "Marquer comme résolu"
Merci