X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/257bcf288a835c63da690e0d150bb4d4849f9863..e6adf05834e880312efa3d59914ecc1d4f5f78a6:/src/common/imagtiff.cpp?ds=sidebyside diff --git a/src/common/imagtiff.cpp b/src/common/imagtiff.cpp index 474e12e3e0..c030a83c84 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" @@ -21,9 +20,9 @@ #include "wx/defs.h" -#if wxUSE_LIBTIFF +#if wxUSE_IMAGE && 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" @@ -43,30 +41,34 @@ extern "C" // wxTIFFHandler //----------------------------------------------------------------------------- -#if !USE_SHARED_LIBRARIES IMPLEMENT_DYNAMIC_CLASS(wxTIFFHandler,wxImageHandler) -#endif -static tsize_t +static tsize_t LINKAGEMODE +_tiffNullProc(thandle_t WXUNUSED(handle), + tdata_t WXUNUSED(buf), + tsize_t WXUNUSED(size)) +{ + return (tsize_t) -1; +} + +static tsize_t LINKAGEMODE _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 +static tsize_t LINKAGEMODE _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 -_tiffSeekProc(thandle_t handle, toff_t off, int whence) +static toff_t LINKAGEMODE +_tiffSeekIProc(thandle_t handle, toff_t off, int whence) { wxInputStream *stream = (wxInputStream*) handle; wxSeekMode mode; @@ -77,32 +79,51 @@ _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 ); } -static int +static toff_t LINKAGEMODE +_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 LINKAGEMODE _tiffCloseProc(thandle_t WXUNUSED(handle)) { return 0; // ? } -static toff_t +static toff_t LINKAGEMODE _tiffSizeProc(thandle_t handle) { - wxInputStream *stream = (wxInputStream*) handle; - long fsize; - return ((fsize = stream->SeekI(0, wxFromEnd)) < 0 ? 0 : fsize); + wxStreamBase *stream = (wxStreamBase*) handle; + return (toff_t) stream->GetSize(); } -static int -_tiffMapProc(thandle_t WXUNUSED(handle), tdata_t* pbase, toff_t* psize) +static int LINKAGEMODE +_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) +static void LINKAGEMODE +_tiffUnmapProc(thandle_t WXUNUSED(handle), + tdata_t WXUNUSED(base), + toff_t WXUNUSED(size)) { } @@ -111,132 +132,237 @@ TIFFwxOpen(wxInputStream &stream, const char* name, const char* mode) { 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 ) +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.") ); + + TIFFClose( tif ); + + 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 ); + TIFFClose( tif ); + 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(); + 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; + 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 *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 ) { - 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)); } @@ -244,7 +370,3 @@ bool wxTIFFHandler::DoCanRead( wxInputStream& stream ) // wxUSE_LIBTIFF - - - -