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libs-dev: fixed incorrect GIF processing

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git-svn-id: svn://kolibrios.org@722 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Mihail Semenyako (mike.dld) 2008-02-08 20:13:33 +00:00
parent 15f607fd64
commit 1548de7c2a
1 changed files with 8 additions and 5 deletions
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13
programs/develop/libraries/libs-dev/libimg/gif/gif.asm
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@ -149,6 +149,8 @@ endl
or eax, eax or eax, eax
jz .error jz .error
xor ecx, ecx
mov eax, [edx + Image.Extended]
test [ebx + gif.ImageDescriptor.Packed], gif.ID.Packed.LocalColorTableFlag test [ebx + gif.ImageDescriptor.Packed], gif.ID.Packed.LocalColorTableFlag
jz @f jz @f
mov cl, [ebx + gif.ImageDescriptor.Packed] mov cl, [ebx + gif.ImageDescriptor.Packed]
@ -163,11 +165,12 @@ endl
or eax, eax or eax, eax
jz .error jz .error
mov [edx + Image.Extended], eax mov [edx + Image.Extended], eax
lea esi, [ebx + sizeof.gif.ImageDescriptor] @@: mov esi, ebx
lea edi, [eax + sizeof.gif.Image] lea edi, [eax + sizeof.gif.GraphicsControlExtension]
add ecx, sizeof.gif.ImageDescriptor
rep movsb rep movsb
@@: mov eax, [global_color_table] mov eax, [global_color_table]
test [ebx + gif.ImageDescriptor.Packed], gif.ID.Packed.LocalColorTableFlag test [ebx + gif.ImageDescriptor.Packed], gif.ID.Packed.LocalColorTableFlag
jz @f jz @f
lea eax, [ebx + sizeof.gif.ImageDescriptor] lea eax, [ebx + sizeof.gif.ImageDescriptor]
@ -293,10 +296,10 @@ proc img.decode.gif._.process_extensions ;//////////////////////////////////////
jmp .next_ext_block jmp .next_ext_block
.next_ext_block: .next_ext_block:
mov al, [ebx + gif.Block.Introducer] mov al, [esi + gif.Block.Introducer]
cmp al, gif.Block.Introducer.EndOfData cmp al, gif.Block.Introducer.EndOfData
jne .exit jne .exit
inc ebx inc esi
jmp .next_block jmp .next_block
.exit: .exit: