/////////////////////////////////////////////////////////////////////////////
-// Name: imagjpeg.cpp
-// Purpose: wxImage JPEG handler
-// Author: Vaclav Slavik
+// Name: imagtiff.cpp
+// Purpose: wxImage TIFF handler
+// Author: Robert Roebling
// RCS-ID: $Id$
-// Copyright: (c) Vaclav Slavik
+// Copyright: (c) Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-/*
- We don't put pragma implement in this file because it is already present in
- src/common/image.cpp
-*/
+#ifdef __GNUG__
+#pragma implementation "imagtiff.h"
+#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#if wxUSE_LIBTIFF
-#include "wx/image.h"
+#include "wx/imagtiff.h"
#include "wx/bitmap.h"
#include "wx/debug.h"
#include "wx/log.h"
{
#include "tiff.h"
#include "tiffio.h"
- #include "tiffiop.h"
}
#include "wx/filefn.h"
#include "wx/wfstream.h"
IMPLEMENT_DYNAMIC_CLASS(wxTIFFHandler,wxImageHandler)
+static tsize_t
+_tiffNullProc(thandle_t WXUNUSED(handle),
+ tdata_t WXUNUSED(buf),
+ tsize_t WXUNUSED(size))
+{
+ return (tsize_t) -1;
+}
+
static tsize_t
_tiffReadProc(thandle_t handle, tdata_t buf, tsize_t size)
{
}
static toff_t
-_tiffSeekProc(thandle_t handle, toff_t off, int whence)
+_tiffSeekIProc(thandle_t handle, toff_t off, int whence)
{
wxInputStream *stream = (wxInputStream*) handle;
wxSeekMode mode;
case SEEK_END: mode = wxFromEnd; break;
default: mode = wxFromCurrent; break;
}
-
+
return (toff_t)stream->SeekI( (off_t)off, mode );
}
+static toff_t
+_tiffSeekOProc(thandle_t handle, toff_t off, int whence)
+{
+ wxOutputStream *stream = (wxOutputStream*) handle;
+ wxSeekMode mode;
+ switch (whence)
+ {
+ case SEEK_SET: mode = wxFromStart; break;
+ case SEEK_CUR: mode = wxFromCurrent; break;
+ case SEEK_END: mode = wxFromEnd; break;
+ default: mode = wxFromCurrent; break;
+ }
+
+ return (toff_t)stream->SeekO( (off_t)off, mode );
+}
+
static int
_tiffCloseProc(thandle_t WXUNUSED(handle))
{
static toff_t
_tiffSizeProc(thandle_t handle)
{
- wxInputStream *stream = (wxInputStream*) handle;
+ wxStreamBase *stream = (wxStreamBase*) handle;
return (toff_t) stream->GetSize();
}
static int
-_tiffMapProc(thandle_t WXUNUSED(handle), tdata_t* pbase, toff_t* psize)
+_tiffMapProc(thandle_t WXUNUSED(handle),
+ tdata_t* WXUNUSED(pbase),
+ toff_t* WXUNUSED(psize))
{
return 0;
}
static void
-_tiffUnmapProc(thandle_t WXUNUSED(handle), tdata_t base, toff_t size)
+_tiffUnmapProc(thandle_t WXUNUSED(handle),
+ tdata_t WXUNUSED(base),
+ toff_t WXUNUSED(size))
{
}
{
TIFF* tif = TIFFClientOpen(name, mode,
(thandle_t) &stream,
- _tiffReadProc, _tiffWriteProc,
- _tiffSeekProc, _tiffCloseProc, _tiffSizeProc,
+ _tiffReadProc, _tiffNullProc,
+ _tiffSeekIProc, _tiffCloseProc, _tiffSizeProc,
_tiffMapProc, _tiffUnmapProc);
- if (tif)
- tif->tif_fd = (int) &stream;
-
return tif;
}
+TIFF*
+TIFFwxOpen(wxOutputStream &stream, const char* name, const char* mode)
+{
+ TIFF* tif = TIFFClientOpen(name, mode,
+ (thandle_t) &stream,
+ _tiffNullProc, _tiffWriteProc,
+ _tiffSeekOProc, _tiffCloseProc, _tiffSizeProc,
+ _tiffMapProc, _tiffUnmapProc);
+
+ return tif;
+}
bool wxTIFFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose, int index )
{
image->Destroy();
-
+
TIFF *tif = TIFFwxOpen( stream, "image", "r" );
-
+
if (!tif)
{
if (verbose)
wxLogError( _("TIFF: Error loading image.") );
-
- return FALSE;
+
+ return FALSE;
}
-
+
if (!TIFFSetDirectory( tif, (tdir_t)index ))
{
if (verbose)
wxLogError( _("Invalid TIFF image index.") );
-
+
TIFFClose( tif );
-
- return FALSE;
+
+ return FALSE;
}
uint32 w, h;
- size_t npixels;
+ uint32 npixels;
uint32 *raster;
-
+
TIFFGetField( tif, TIFFTAG_IMAGEWIDTH, &w );
TIFFGetField( tif, TIFFTAG_IMAGELENGTH, &h );
-
+
npixels = w * h;
-
+
raster = (uint32*) _TIFFmalloc( npixels * sizeof(uint32) );
-
+
if (!raster)
{
if (verbose)
wxLogError( _("TIFF: Couldn't allocate memory.") );
-
- return FALSE;
+
+ TIFFClose( tif );
+
+ return FALSE;
}
- image->Create( w, h );
- if (!image->Ok())
+ image->Create( (int)w, (int)h );
+ if (!image->Ok())
{
if (verbose)
wxLogError( _("TIFF: Couldn't allocate memory.") );
-
- _TIFFfree( raster );
-
+
+ _TIFFfree( raster );
+ TIFFClose( tif );
+
return FALSE;
}
-
+
if (!TIFFReadRGBAImage( tif, w, h, raster, 0 ))
{
if (verbose)
wxLogError( _("TIFF: Error reading image.") );
-
- _TIFFfree( raster );
- image->Destroy();
-
- return FALSE;
+
+ _TIFFfree( raster );
+ image->Destroy();
+ TIFFClose( tif );
+
+ return FALSE;
}
-
+
bool hasmask = FALSE;
-
+
unsigned char *ptr = image->GetData();
+ ptr += w*3*(h-1);
uint32 pos = 0;
-
+
for (uint32 i = 0; i < h; i++)
{
- for (uint32 j = 0; w < h; j++)
- {
- unsigned char alpha = (unsigned char)(raster[pos] >> 24);
- if (alpha < 127)
- {
- hasmask = TRUE;
- ptr[0] = image->GetMaskRed();
- ptr++;
- ptr[0] = image->GetMaskGreen();
- ptr++;
- ptr[0] = image->GetMaskBlue();
- ptr++;
- }
- else
- {
- ptr[0] = (unsigned char)(raster[pos] >> 16);
- ptr++;
- ptr[0] = (unsigned char)(raster[pos] >> 8);
- ptr++;
- ptr[0] = (unsigned char)(raster[pos]);
- ptr++;
- }
- pos++;
- }
+ for (uint32 j = 0; j < w; j++)
+ {
+ unsigned char alpha = (unsigned char)TIFFGetA(raster[pos]);
+ if (alpha < 127)
+ {
+ hasmask = TRUE;
+ ptr[0] = image->GetMaskRed();
+ ptr++;
+ ptr[0] = image->GetMaskGreen();
+ ptr++;
+ ptr[0] = image->GetMaskBlue();
+ ptr++;
+ }
+ else
+ {
+ ptr[0] = (unsigned char)TIFFGetR(raster[pos]);
+ ptr++;
+ ptr[0] = (unsigned char)TIFFGetG(raster[pos]);
+ ptr++;
+ ptr[0] = (unsigned char)TIFFGetB(raster[pos]);
+ ptr++;
+ }
+ pos++;
+ }
+ ptr -= 2*w*3; // subtract line we just added plus one line
}
-
+
_TIFFfree( raster );
-
+
TIFFClose( tif );
-
+
image->SetMask( hasmask );
-
+
return TRUE;
}
int wxTIFFHandler::GetImageCount( wxInputStream& stream )
{
TIFF *tif = TIFFwxOpen( stream, "image", "r" );
-
+
if (!tif)
- return 0;
+ return 0;
int dircount = 0; // according to the libtiff docs, dircount should be set to 1 here???
do {
dircount++;
} while (TIFFReadDirectory(tif));
-
+
TIFFClose( tif );
-
+
return dircount;
}
-bool wxTIFFHandler::SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream), bool WXUNUSED(verbose) )
+bool wxTIFFHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbose )
{
- return FALSE;
+ TIFF *tif = TIFFwxOpen( stream, "image", "w" );
+
+ if (!tif)
+ {
+ if (verbose)
+ wxLogError( _("TIFF: Error saving image.") );
+
+ return FALSE;
+ }
+
+ TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, (uint32)image->GetWidth());
+ TIFFSetField(tif, TIFFTAG_IMAGELENGTH, (uint32)image->GetHeight());
+ TIFFSetField(tif, TIFFTAG_ORIENTATION, ORIENTATION_TOPLEFT);
+ TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, 3);
+ TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, 8);
+ TIFFSetField(tif, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
+ TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_RGB);
+ TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_LZW);
+
+ tsize_t linebytes = (tsize_t)image->GetWidth() * 3;
+ unsigned char *buf;
+
+ if (TIFFScanlineSize(tif) > linebytes)
+ {
+ buf = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(tif));
+ if (!buf)
+ {
+ if (verbose)
+ wxLogError( _("TIFF: Couldn't allocate memory.") );
+
+ TIFFClose( tif );
+
+ return FALSE;
+ }
+ }
+ else
+ {
+ buf = NULL;
+ }
+
+ TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP,
+ TIFFDefaultStripSize(tif, (uint32) -1));
+
+ unsigned char *ptr = image->GetData();
+ for (int row = 0; row < image->GetHeight(); row++)
+ {
+ if (buf)
+ memcpy(buf, ptr, image->GetWidth());
+
+ if (TIFFWriteScanline(tif, buf ? buf : ptr, (uint32)row, 0) < 0)
+ {
+ if (verbose)
+ wxLogError( _("TIFF: Error writing image.") );
+
+ TIFFClose( tif );
+ if (buf)
+ _TIFFfree(buf);
+
+ return FALSE;
+ }
+ ptr += image->GetWidth()*3;
+ }
+
+ (void) TIFFClose(tif);
+
+ if (buf)
+ _TIFFfree(buf);
+
+ return TRUE;
}
bool wxTIFFHandler::DoCanRead( wxInputStream& stream )
stream.Read(&hdr, 2);
stream.SeekI(-2, wxFromCurrent);
-
+
return ((hdr[0] == 0x49 && hdr[1] == 0x49) ||
(hdr[0] == 0x4D && hdr[1] == 0x4D));
}
// wxUSE_LIBTIFF
-
-
-
-
projects / wxWidgets.git / blobdiff