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	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 )
    {
        uint64  *offsets=NULL, *sizes=NULL;

        if( TIFFIsTiled(tif) )
        {
            if( TIFFGetField( tif, TIFFTAG_TILEOFFSETS, &offsets ) 
                && TIFFGetField( tif, TIFFTAG_TILEBYTECOUNTS, &sizes ) 
                && _TIFFRewriteField( tif, TIFFTAG_TILEOFFSETS, TIFF_LONG8, 
                                      tif->tif_dir.td_nstrips, offsets )
                && _TIFFRewriteField( tif, TIFFTAG_TILEBYTECOUNTS, TIFF_LONG8, 
                                      tif->tif_dir.td_nstrips, sizes ) )
            {
                tif->tif_flags &= ~TIFF_DIRTYSTRIP;
                tif->tif_flags &= ~TIFF_BEENWRITING;
                return 1;
            }
        }
        else
        {
            if( TIFFGetField( tif, TIFFTAG_STRIPOFFSETS, &offsets ) 
                && TIFFGetField( tif, TIFFTAG_STRIPBYTECOUNTS, &sizes ) 
                && _TIFFRewriteField( tif, TIFFTAG_STRIPOFFSETS, TIFF_LONG8, 
                                      tif->tif_dir.td_nstrips, offsets )
                && _TIFFRewriteField( tif, TIFFTAG_STRIPBYTECOUNTS, TIFF_LONG8, 
                                      tif->tif_dir.td_nstrips, sizes ) )
            {
                tif->tif_flags &= ~TIFF_DIRTYSTRIP;
                tif->tif_flags &= ~TIFF_BEENWRITING;
                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 98 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().