tif_flush.c File Reference

#include "tiffiop.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 30 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 146 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 76 of file tif_flush.c.

{
    static const char module[] = "TIFFForceStrileArrayWriting";
    const int isTiled = TIFFIsTiled(tif);
 
    if (tif->tif_mode == O_RDONLY)
    {
        TIFFErrorExtR(tif, tif->tif_name, "File opened in read-only mode");
        return 0;
    }
    if (tif->tif_diroff == 0)
    {
        TIFFErrorExtR(tif, module, "Directory has not yet been written");
        return 0;
    }
    if ((tif->tif_flags & TIFF_DIRTYDIRECT) != 0)
    {
        TIFFErrorExtR(tif, 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))
        {
            TIFFErrorExtR(tif, 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().