tif_flush.c File Reference

#include <precomp.h>

Include dependency graph for tif_flush.c:

Go to the source code of this file.

Functions
int	TIFFFlush (TIFF *tif)
int	TIFFForceStrileArrayWriting (TIFF *tif)
int	TIFFFlushData (TIFF *tif)

Function Documentation

TIFFFlush()

int TIFFFlush

(

TIFF *

tif

)

Definition at line 32 of file tif_flush.c.

{
    if( tif->tif_mode == O_RDONLY )
        return 1;

    if (!TIFFFlushData(tif))
        return (0);
                
    /* In update (r+) mode we try to detect the case where 
       only the strip/tile map has been altered, and we try to 
       rewrite only that portion of the directory without 
       making any other changes */
                
    if( (tif->tif_flags & TIFF_DIRTYSTRIP)
        && !(tif->tif_flags & TIFF_DIRTYDIRECT) 
        && tif->tif_mode == O_RDWR )
    {
        if( TIFFForceStrileArrayWriting(tif) )
            return 1;
    }

    if ((tif->tif_flags & (TIFF_DIRTYDIRECT|TIFF_DIRTYSTRIP)) 
        && !TIFFRewriteDirectory(tif))
        return (0);

    return (1);
}

Referenced by TIFFCleanup().

TIFFFlushData()

int TIFFFlushData

(

TIFF *

tif

)

Definition at line 156 of file tif_flush.c.

{
    if ((tif->tif_flags & TIFF_BEENWRITING) == 0)
        return (1);
    if (tif->tif_flags & TIFF_POSTENCODE) {
        tif->tif_flags &= ~TIFF_POSTENCODE;
        if (!(*tif->tif_postencode)(tif))
            return (0);
    }
    return (TIFFFlushData1(tif));
}

Referenced by TIFFFlush(), and TIFFWriteScanline().

TIFFForceStrileArrayWriting()

int TIFFForceStrileArrayWriting

(

TIFF *

tif

)

Definition at line 79 of file tif_flush.c.

{
    static const char module[] = "TIFFForceStrileArrayWriting";
    const int isTiled = TIFFIsTiled(tif);

    if (tif->tif_mode == O_RDONLY)
    {
        TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
                     "File opened in read-only mode");
        return 0;
    }
    if( tif->tif_diroff == 0 )
    {
        TIFFErrorExt(tif->tif_clientdata, module,
                     "Directory has not yet been written");
        return 0;
    }
    if( (tif->tif_flags & TIFF_DIRTYDIRECT) != 0 )
    {
        TIFFErrorExt(tif->tif_clientdata, module,
                     "Directory has changes other than the strile arrays. "
                     "TIFFRewriteDirectory() should be called instead");
        return 0;
    }

    if( !(tif->tif_flags & TIFF_DIRTYSTRIP) )
    {
        if( !(tif->tif_dir.td_stripoffset_entry.tdir_tag != 0 &&
             tif->tif_dir.td_stripoffset_entry.tdir_count == 0 &&
             tif->tif_dir.td_stripoffset_entry.tdir_type == 0 &&
             tif->tif_dir.td_stripoffset_entry.tdir_offset.toff_long8 == 0 &&
             tif->tif_dir.td_stripbytecount_entry.tdir_tag != 0 &&
             tif->tif_dir.td_stripbytecount_entry.tdir_count == 0 &&
             tif->tif_dir.td_stripbytecount_entry.tdir_type == 0 &&
             tif->tif_dir.td_stripbytecount_entry.tdir_offset.toff_long8 == 0) )
        {
            TIFFErrorExt(tif->tif_clientdata, module,
                        "Function not called together with "
                        "TIFFDeferStrileArrayWriting()");
            return 0;
        }

        if (tif->tif_dir.td_stripoffset_p == NULL && !TIFFSetupStrips(tif))
            return 0;
    }

    if( _TIFFRewriteField( tif,
                           isTiled ? TIFFTAG_TILEOFFSETS :
                                     TIFFTAG_STRIPOFFSETS,
                           TIFF_LONG8,
                           tif->tif_dir.td_nstrips,
                           tif->tif_dir.td_stripoffset_p )
        && _TIFFRewriteField( tif,
                              isTiled ? TIFFTAG_TILEBYTECOUNTS :
                                        TIFFTAG_STRIPBYTECOUNTS,
                              TIFF_LONG8,
                              tif->tif_dir.td_nstrips,
                              tif->tif_dir.td_stripbytecount_p ) )
    {
        tif->tif_flags &= ~TIFF_DIRTYSTRIP;
        tif->tif_flags &= ~TIFF_BEENWRITING;
        return 1;
    }

    return 0;
}

Referenced by TIFFFlush(), and TIFFWriteCheck().