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* Applied patch as per bug #14083, added on_unknown_marker handler

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git-svn-id: trunk@17748 -
This commit is contained in:
michael 2011-06-13 19:25:38 +00:00
parent 769f0d8008
commit 341d4a9c1f
1 changed files with 20 additions and 11 deletions
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31
packages/pasjpeg/src/jdmarker.pas
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@ -132,7 +132,9 @@ procedure jpeg_save_markers (cinfo : j_decompress_ptr;
procedure jpeg_set_marker_processor (cinfo : j_decompress_ptr;
marker_code : int;
routine : jpeg_marker_parser_method);
Var
on_unknown_marker : function (cinfo : j_decompress_ptr) : int; far;
implementation
uses
@ -2321,18 +2323,25 @@ begin
M_DNL: { Ignore DNL ... perhaps the wrong thing }
if not skip_variable(cinfo) then
begin
read_markers := JPEG_SUSPENDED;
exit;
end;
begin
read_markers := JPEG_SUSPENDED;
exit;
end;
else { must be DHP, EXP, JPGn, or RESn }
{ For now, we treat the reserved markers as fatal errors since they are
likely to be used to signal incompatible JPEG Part 3 extensions.
Once the JPEG 3 version-number marker is well defined, this code
ought to change! }
ERREXIT1(j_common_ptr(cinfo) , JERR_UNKNOWN_MARKER,
cinfo^.unread_marker);
if (@on_unknown_marker<>nil) then
begin
read_markers:=on_unknown_marker(cinfo);
exit;
end
else if not skip_variable(cinfo) then
begin
read_markers := JPEG_SUSPENDED;
exit;
end;
{ // This is the previous code.
ERREXIT1(j_common_ptr(cinfo) , JERR_UNKNOWN_MARKER,cinfo^.unread_marker);
}
end; { end of case }
{ Successfully processed marker, so reset state variable }
cinfo^.unread_marker := 0;