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Fix to work with images embedded in streams (doesn't reset pos to 0)

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4772 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Guillermo Rodriguez Garcia
1999-11-30 14:38:42 +00:00
parent 065de61268
commit 9d0e21da25
1 changed files with 3 additions and 7 deletions
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10
src/common/gifdecod.cpp
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@@ -2,8 +2,8 @@
// Name: gifdecod.cpp
// Purpose: wxGIFDecoder, GIF reader for wxImage and wxAnimation
// Author: Guillermo Rodriguez Garcia <guille@iies.es>
// Version: 3.03
// RCS-ID:
// Version: 3.04
// RCS-ID: $Id$
// Copyright: (c) Guillermo Rodriguez Garcia
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
@@ -444,12 +444,9 @@ int wxGIFDecoder::dgif(IMAGEN *img, int interl, int bits)
bool wxGIFDecoder::CanRead()
{
unsigned char buf[3];
off_t pos;
pos = m_f->TellI();
m_f->SeekI(0, wxFromStart);
m_f->Read(buf, 3);
m_f->SeekI(pos, wxFromStart);
stream.SeekI(-3, wxFromCurrent);
return (memcmp(buf, "GIF", 3) == 0);
}
@@ -479,7 +476,6 @@ int wxGIFDecoder::ReadGIF()
return E_FORMATO;
/* check for and animated GIF support (ver. >= 89a) */
m_f->SeekI(0, wxFromStart);
m_f->Read(buf, 6);
if (memcmp(buf + 3, "89a", 3) < 0)