X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/257bcf288a835c63da690e0d150bb4d4849f9863..f5ba273ecd799f652736ce2bc830283787302a56:/src/common/imagtiff.cpp diff --git a/src/common/imagtiff.cpp b/src/common/imagtiff.cpp index 474e12e3e0..2bbfa1071a 100644 --- a/src/common/imagtiff.cpp +++ b/src/common/imagtiff.cpp @@ -1,16 +1,15 @@ ///////////////////////////////////////////////////////////////////////////// -// 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" @@ -23,7 +22,7 @@ #if wxUSE_LIBTIFF -#include "wx/image.h" +#include "wx/imagtiff.h" #include "wx/bitmap.h" #include "wx/debug.h" #include "wx/log.h" @@ -32,7 +31,6 @@ extern "C" { #include "tiff.h" #include "tiffio.h" - #include "tiffiop.h" } #include "wx/filefn.h" #include "wx/wfstream.h" @@ -43,17 +41,14 @@ extern "C" // wxTIFFHandler //----------------------------------------------------------------------------- -#if !USE_SHARED_LIBRARIES IMPLEMENT_DYNAMIC_CLASS(wxTIFFHandler,wxImageHandler) -#endif static tsize_t _tiffReadProc(thandle_t handle, tdata_t buf, tsize_t size) { wxInputStream *stream = (wxInputStream*) handle; stream->Read( (void*) buf, (size_t) size ); - if (!*stream) return 0; - return size; + return stream->LastRead(); } static tsize_t @@ -61,8 +56,7 @@ _tiffWriteProc(thandle_t handle, tdata_t buf, tsize_t size) { wxOutputStream *stream = (wxOutputStream*) handle; stream->Write( (void*) buf, (size_t) size ); - if (!*stream) return 0; - return size; + return stream->LastWrite(); } static toff_t @@ -77,7 +71,7 @@ _tiffSeekProc(thandle_t handle, toff_t off, int whence) case SEEK_END: mode = wxFromEnd; break; default: mode = wxFromCurrent; break; } - + return (toff_t)stream->SeekI( (off_t)off, mode ); } @@ -91,18 +85,21 @@ static toff_t _tiffSizeProc(thandle_t handle) { wxInputStream *stream = (wxInputStream*) handle; - long fsize; - return ((fsize = stream->SeekI(0, wxFromEnd)) < 0 ? 0 : fsize); + 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)) { } @@ -115,128 +112,150 @@ TIFFwxOpen(wxInputStream &stream, const char* name, const char* mode) _tiffSeekProc, _tiffCloseProc, _tiffSizeProc, _tiffMapProc, _tiffUnmapProc); - if (tif) - tif->tif_fd = (int) &stream; - return tif; } -bool wxTIFFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose ) +bool wxTIFFHandler::LoadFile( wxImage *image, wxInputStream& stream, bool verbose, int index ) { image->Destroy(); - - TIFF *tif = TIFFwxOpen( stream, "horse.tif", "r" ); - + + TIFF *tif = TIFFwxOpen( stream, "image", "r" ); + if (!tif) { if (verbose) - wxLogError( _("Error loading TIFF image.") ); - - return FALSE; + wxLogError( _("TIFF: Error loading image.") ); + + return FALSE; + } + + if (!TIFFSetDirectory( tif, (tdir_t)index )) + { + if (verbose) + wxLogError( _("Invalid TIFF image index.") ); + + TIFFClose( tif ); + + 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( _("Not enough memory for loading TIFF image.") ); - - return FALSE; + wxLogError( _("TIFF: Couldn't allocate memory.") ); + + return FALSE; } - image->Create( w, h ); - if (!image->Ok()) + image->Create( (int)w, (int)h ); + if (!image->Ok()) { if (verbose) - wxLogError( _("Not enough memory for loading TIFF image.") ); - - _TIFFfree( raster ); - + wxLogError( _("TIFF: Couldn't allocate memory.") ); + + _TIFFfree( raster ); + return FALSE; } - + if (!TIFFReadRGBAImage( tif, w, h, raster, 0 )) { if (verbose) - wxLogError( _("Error reading TIFF image.") ); - - _TIFFfree( raster ); - image->Destroy(); - - return FALSE; + wxLogError( _("TIFF: Error reading image.") ); + + _TIFFfree( raster ); + image->Destroy(); + + 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; + + int dircount = 0; // according to the libtiff docs, dircount should be set to 1 here??? + do { + dircount++; + } while (TIFFReadDirectory(tif)); + TIFFClose( tif ); -bool wxTIFFHandler::SaveFile( wxImage *image, wxOutputStream& stream, bool verbose ) + return dircount; +} + +bool wxTIFFHandler::SaveFile( wxImage *WXUNUSED(image), wxOutputStream& WXUNUSED(stream), bool WXUNUSED(verbose) ) { return FALSE; } bool wxTIFFHandler::DoCanRead( wxInputStream& stream ) { - return TRUE; + unsigned char hdr[2]; -/* - unsigned char hdr[4]; + stream.Read(&hdr, 2); + stream.SeekI(-2, wxFromCurrent); - stream.Read(&hdr, 4); - stream.SeekI(-4, wxFromCurrent); - return (hdr[0] == 'T' && hdr[1] == 'I' && hdr[2] == 'F' && hdr[3] == 'F'); -*/ + return ((hdr[0] == 0x49 && hdr[1] == 0x49) || + (hdr[0] == 0x4D && hdr[1] == 0x4D)); }