/usr/include/wx-3.0/wx/imaggif.h is in wx3.0-headers 3.0.4+dfsg-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Name: wx/imaggif.h
// Purpose: wxImage GIF handler
// Author: Vaclav Slavik, Guillermo Rodriguez Garcia, Gershon Elber, Troels K
// Copyright: (c) 1999-2011 Vaclav Slavik, Guillermo Rodriguez Garcia, Gershon Elber, Troels K
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_IMAGGIF_H_
#define _WX_IMAGGIF_H_
#include "wx/image.h"
//-----------------------------------------------------------------------------
// wxGIFHandler
//-----------------------------------------------------------------------------
#if wxUSE_GIF
#define wxIMAGE_OPTION_GIF_COMMENT wxT("GifComment")
struct wxRGB;
struct GifHashTableType;
class WXDLLIMPEXP_FWD_CORE wxImageArray; // anidecod.h
class WXDLLIMPEXP_CORE wxGIFHandler : public wxImageHandler
{
public:
inline wxGIFHandler()
{
m_name = wxT("GIF file");
m_extension = wxT("gif");
m_type = wxBITMAP_TYPE_GIF;
m_mime = wxT("image/gif");
m_hashTable = NULL;
}
#if wxUSE_STREAMS
virtual bool LoadFile(wxImage *image, wxInputStream& stream,
bool verbose = true, int index = -1);
virtual bool SaveFile(wxImage *image, wxOutputStream& stream,
bool verbose=true);
// Save animated gif
bool SaveAnimation(const wxImageArray& images, wxOutputStream *stream,
bool verbose = true, int delayMilliSecs = 1000);
protected:
virtual int DoGetImageCount(wxInputStream& stream);
virtual bool DoCanRead(wxInputStream& stream);
bool DoSaveFile(const wxImage&, wxOutputStream *, bool verbose,
bool first, int delayMilliSecs, bool loop,
const wxRGB *pal, int palCount,
int mask_index);
#endif // wxUSE_STREAMS
protected:
// Declarations for saving
unsigned long m_crntShiftDWord; /* For bytes decomposition into codes. */
int m_pixelCount;
struct GifHashTableType *m_hashTable;
wxInt16
m_EOFCode, /* The EOF LZ code. */
m_clearCode, /* The CLEAR LZ code. */
m_runningCode, /* The next code algorithm can generate. */
m_runningBits, /* The number of bits required to represent RunningCode. */
m_maxCode1, /* 1 bigger than max. possible code, in RunningBits bits. */
m_crntCode, /* Current algorithm code. */
m_crntShiftState; /* Number of bits in CrntShiftDWord. */
wxUint8 m_LZBuf[256]; /* Compressed input is buffered here. */
bool InitHashTable();
void ClearHashTable();
void InsertHashTable(unsigned long key, int code);
int ExistsHashTable(unsigned long key);
#if wxUSE_STREAMS
bool CompressOutput(wxOutputStream *, int code);
bool SetupCompress(wxOutputStream *, int bpp);
bool CompressLine(wxOutputStream *, const wxUint8 *line, int lineLen);
#endif
private:
DECLARE_DYNAMIC_CLASS(wxGIFHandler)
};
#endif // wxUSE_GIF
#endif // _WX_IMAGGIF_H_
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