C++ TIFFAppendToStrip函数代码示例

/*
 * Encode the supplied data and write it to the
 * specified tile.  There must be space for the
 * data.  The function clamps individual writes
 * to a tile to the tile size, but does not (and
 * can not) check that multiple writes to the same
 * tile do not write more than tile size data.
 *
 * NB: Image length must be setup before writing; this
 *     interface does not support automatically growing
 *     the image on each write (as TIFFWriteScanline does).
 */
tsize_t
TIFFWriteEncodedTile(TIFF* tif, ttile_t tile, tdata_t data, tsize_t cc)
{
	static const char module[] = "TIFFWriteEncodedTile";
	TIFFDirectory *td;

	if (!TIFFWriteCheck(tif, 1, module))
		return ((tsize_t) -1);
	td = &tif->tif_dir;
	if (tile >= td->td_nstrips) {
		TIFFError(module, "%s: Tile %lu out of range, max %lu",
		    tif->tif_name, (u_long) tile, (u_long) td->td_nstrips);
		return ((tsize_t) -1);
	}
	/*
	 * Handle delayed allocation of data buffer.  This
	 * permits it to be sized more intelligently (using
	 * directory information).
	 */
	if ((tif->tif_flags & TIFF_BUFFERSETUP) == 0) {
		if (!TIFFBufferSetup(tif, module))
			return ((tsize_t) -1);
		tif->tif_flags |= TIFF_BUFFERSETUP;
	}
	tif->tif_curtile = tile;
	/* 
	 * Compute tiles per row & per column to compute
	 * current row and column
	 */
	tif->tif_row = (tile % howmany(td->td_imagelength, td->td_tilelength))
		* td->td_tilelength;
	tif->tif_col = (tile % howmany(td->td_imagewidth, td->td_tilewidth))
		* td->td_tilewidth;

	tif->tif_flags &= ~TIFF_POSTENCODE;
	if (tif->tif_preencode && !(*tif->tif_preencode)(tif))
		return ((tsize_t) -1);
	/*
	 * Clamp write amount to the tile size.  This is mostly
	 * done so that callers can pass in some large number
	 * (e.g. -1) and have the tile size used instead.
	 */
	if ((uint32) cc > tif->tif_tilesize)
		cc = tif->tif_tilesize;
	if (!(*tif->tif_encodetile)(tif, (tidata_t) data, cc,
	    (tsample_t)(tile/td->td_stripsperimage)))
		return ((tsize_t) 0);
	if (tif->tif_postencode && !(*tif->tif_postencode)(tif))
		return ((tsize_t) -1);
	if (td->td_fillorder != tif->tif_fillorder &&
	    (tif->tif_flags & TIFF_NOBITREV) == 0)
		TIFFReverseBits((u_char *)tif->tif_rawdata, tif->tif_rawcc);
	if (tif->tif_rawcc > 0 && !TIFFAppendToStrip(tif, tile,
	    tif->tif_rawdata, tif->tif_rawcc))
		return ((tsize_t) -1);
	tif->tif_rawcc = 0;
	tif->tif_rawcp = tif->tif_rawdata;
	return (cc);
}

/*
 * Write the supplied data to the specified strip.
 * There must be space for the data; we don't check
 * if strips overlap!
 *
 * NB: Image length must be setup before writing; this
 *     interface does not support automatically growing
 *     the image on each write (as TIFFWriteScanline does).
 */
tmsize_t
TIFFWriteRawTile(TIFF* tif, uint32 tile, void* data, tmsize_t cc)
{
	static const char module[] = "TIFFWriteRawTile";

	if (!WRITECHECKTILES(tif, module))
		return ((tmsize_t)(-1));
	if (tile >= tif->tif_dir.td_nstrips) {
		TIFFErrorExt(tif->tif_clientdata, module, "Tile %lu out of range, max %lu",
		    (unsigned long) tile,
		    (unsigned long) tif->tif_dir.td_nstrips);
		return ((tmsize_t)(-1));
	}
	return (TIFFAppendToStrip(tif, tile, (uint8*) data, cc) ?
	    cc : (tmsize_t)(-1));
}

/*
 * Write the supplied data to the specified strip.
 * There must be space for the data; we don't check
 * if strips overlap!
 *
 * NB: Image length must be setup before writing; this
 *     interface does not support automatically growing
 *     the image on each write (as TIFFWriteScanline does).
 */
tsize_t
TIFFWriteRawTile(TIFF* tif, ttile_t tile, tdata_t data, tsize_t cc)
{
	static const char module[] = "TIFFWriteRawTile";

	if (!WRITECHECKTILES(tif, module))
		return ((tsize_t) -1);
	if (tile >= tif->tif_dir.td_nstrips) {
		TIFFErrorExt(tif->tif_clientdata, module, "%s: Tile %lu out of range, max %lu",
		    tif->tif_name, (unsigned long) tile,
		    (unsigned long) tif->tif_dir.td_nstrips);
		return ((tsize_t) -1);
	}
	return (TIFFAppendToStrip(tif, tile, (tidata_t) data, cc) ?
	    cc : (tsize_t) -1);
}

/*
 * Write the supplied data to the specified strip.
 * There must be space for the data; we don't check
 * if strips overlap!
 *
 * NB: Image length must be setup before writing; this
 *     interface does not support automatically growing
 *     the image on each write (as TIFFWriteScanline does).
 */
tsize_t
TIFFWriteRawTile(TIFF* tif, ttile_t tile, tdata_t data, tsize_t cc)
{
	static const char module[] = "TIFFWriteRawTile";

	if (!TIFFWriteCheck(tif, 1, module))
		return ((tsize_t) -1);
	if (tile >= tif->tif_dir.td_nstrips) {
		TIFFError(module, "%s: Tile %lu out of range, max %lu",
		    tif->tif_name, (u_long) tile,
		    (u_long) tif->tif_dir.td_nstrips);
		return ((tsize_t) -1);
	}
	return (TIFFAppendToStrip(tif, tile, (tidata_t) data, cc) ?
	    cc : (tsize_t) -1);
}

/*
 * Internal version of TIFFFlushData that can be
 * called by ``encodestrip routines'' w/o concern
 * for infinite recursion.
 */
int
TIFFFlushData1(TIFF* tif)
{
	if (tif->tif_rawcc > 0) {
		if (!isFillOrder(tif, tif->tif_dir.td_fillorder) &&
		    (tif->tif_flags & TIFF_NOBITREV) == 0)
			TIFFReverseBits((unsigned char *)tif->tif_rawdata,
			    tif->tif_rawcc);
		if (!TIFFAppendToStrip(tif,
		    isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip,
		    tif->tif_rawdata, tif->tif_rawcc))
			return (0);
		tif->tif_rawcc = 0;
		tif->tif_rawcp = tif->tif_rawdata;
	}
	return (1);
}

/*
 * Write the supplied data to the specified strip.
 *
 * NB: Image length must be setup before writing.
 */
tsize_t
TIFFWriteRawStrip(TIFF *tif, tstrip_t strip, tdata_t data, tsize_t cc)
{
    static const char module[] = "TIFFWriteRawStrip";
    TIFFDirectory     *td      = &tif->tif_dir;

    if (!WRITECHECKSTRIPS(tif, module))
        return ((tsize_t) -1);

    /*
     * Check strip array to make sure there's space.
     * We don't support dynamically growing files that
     * have data organized in separate bitplanes because
     * it's too painful.  In that case we require that
     * the imagelength be set properly before the first
     * write (so that the strips array will be fully
     * allocated above).
     */
    if (strip >= td->td_nstrips)
    {
        if (td->td_planarconfig == PLANARCONFIG_SEPARATE)
        {
            TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
                         "Can not grow image by strips when using separate planes");
            return ((tsize_t) -1);
        }

        /*
         * Watch out for a growing image.  The value of
         * strips/image will initially be 1 (since it
         * can't be deduced until the imagelength is known).
         */
        if (strip >= td->td_stripsperimage)
            td->td_stripsperimage =
                TIFFhowmany(td->td_imagelength, td->td_rowsperstrip);

        if (!TIFFGrowStrips(tif, 1, module))
            return ((tsize_t) -1);
    }

    tif->tif_curstrip = strip;
    tif->tif_row      = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
    return (TIFFAppendToStrip(tif, strip, (tidata_t) data, cc) ?
            cc : (tsize_t) -1);
}

/*
 * Encode the supplied data and write it to the
 * specified strip.  There must be space for the
 * data; we don't check if strips overlap!
 *
 * NB: Image length must be setup before writing; this
 *     interface does not support automatically growing
 *     the image on each write (as TIFFWriteScanline does).
 */
tsize_t
TIFFWriteEncodedStrip(TIFF* tif, tstrip_t strip, tdata_t data, tsize_t cc)
{
	static const char module[] = "TIFFWriteEncodedStrip";
	TIFFDirectory *td = &tif->tif_dir;

	if (!TIFFWriteCheck(tif, 0, module))
		return ((tsize_t) -1);
	if (strip >= td->td_nstrips) {
		TIFFError(module, "%s: Strip %lu out of range, max %lu",
		    tif->tif_name, (u_long) strip, (u_long) td->td_nstrips);
		return ((tsize_t) -1);
	}
	/*
	 * Handle delayed allocation of data buffer.  This
	 * permits it to be sized according to the directory
	 * info.
	 */
	if ((tif->tif_flags & TIFF_BUFFERSETUP) == 0) {
		if (!TIFFBufferSetup(tif, module))
			return ((tsize_t) -1);
		tif->tif_flags |= TIFF_BUFFERSETUP;
	}
	tif->tif_curstrip = strip;
	tif->tif_flags &= ~TIFF_POSTENCODE;
	if (tif->tif_preencode && !(*tif->tif_preencode)(tif))
		return ((tsize_t) -1);
	if (!(*tif->tif_encodestrip)(tif,
	    (tidata_t) data, cc, (tsample_t)(strip / td->td_stripsperimage)))
		return ((tsize_t) 0);
	if (tif->tif_postencode && !(*tif->tif_postencode)(tif))
		return (-1);
	if (td->td_fillorder != tif->tif_fillorder &&
	    (tif->tif_flags & TIFF_NOBITREV) == 0)
		TIFFReverseBits(tif->tif_rawdata, tif->tif_rawcc);
	if (tif->tif_rawcc > 0 &&
	    !TIFFAppendToStrip(tif, strip, tif->tif_rawdata, tif->tif_rawcc))
		return (-1);
	tif->tif_rawcc = 0;
	tif->tif_rawcp = tif->tif_rawdata;
	return (cc);
}

/*
 * Internal version of TIFFFlushData that can be
 * called by ``encodestrip routines'' w/o concern
 * for infinite recursion.
 */
int
TIFFFlushData1(TIFF* tif)
{
	if (tif->tif_rawcc > 0 && tif->tif_flags & TIFF_BUF4WRITE ) {
		if (!isFillOrder(tif, tif->tif_dir.td_fillorder) &&
		    (tif->tif_flags & TIFF_NOBITREV) == 0)
			TIFFReverseBits((uint8*)tif->tif_rawdata,
			    tif->tif_rawcc);
		if (!TIFFAppendToStrip(tif,
		    isTiled(tif) ? tif->tif_curtile : tif->tif_curstrip,
		    tif->tif_rawdata, tif->tif_rawcc))
        {
            /* We update those variables even in case of error since there's */
            /* code that doesn't really check the return code of this */
            /* function */
            tif->tif_rawcc = 0;
            tif->tif_rawcp = tif->tif_rawdata;
			return (0);
        }
		tif->tif_rawcc = 0;
		tif->tif_rawcp = tif->tif_rawdata;
	}
	return (1);
}

//.........这里部分代码省略.........
	/*
	 * Handle delayed allocation of data buffer.  This
	 * permits it to be sized more intelligently (using
	 * directory information).
	 */
	if (!BUFFERCHECK(tif))
		return ((tmsize_t)(-1));

        tif->tif_flags |= TIFF_BUF4WRITE;
	tif->tif_curtile = tile;

	if( td->td_stripbytecount[tile] > 0 )
        {
            /* Make sure that at the first attempt of rewriting the tile, we will have */
            /* more bytes available in the output buffer than the previous byte count, */
            /* so that TIFFAppendToStrip() will detect the overflow when it is called the first */
            /* time if the new compressed tile is bigger than the older one. (GDAL #4771) */
            if( tif->tif_rawdatasize <= (tmsize_t) td->td_stripbytecount[tile] )
            {
                if( !(TIFFWriteBufferSetup(tif, NULL,
                    (tmsize_t)TIFFroundup_64((uint64)(td->td_stripbytecount[tile] + 1), 1024))) )
                    return ((tmsize_t)(-1));
            }

	    /* Force TIFFAppendToStrip() to consider placing data at end
               of file. */
            tif->tif_curoff = 0;
        }

	tif->tif_rawcc = 0;
	tif->tif_rawcp = tif->tif_rawdata;

	/* 
	 * Compute tiles per row & per column to compute
	 * current row and column
	 */
        howmany32=TIFFhowmany_32(td->td_imagelength, td->td_tilelength);
        if (howmany32 == 0) {
                 TIFFErrorExt(tif->tif_clientdata,module,"Zero tiles");
                return ((tmsize_t)(-1));
        }
	tif->tif_row = (tile % howmany32) * td->td_tilelength;
        howmany32=TIFFhowmany_32(td->td_imagewidth, td->td_tilewidth);
        if (howmany32 == 0) {
                 TIFFErrorExt(tif->tif_clientdata,module,"Zero tiles");
                return ((tmsize_t)(-1));
        }
	tif->tif_col = (tile % howmany32) * td->td_tilewidth;

	if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
		if (!(*tif->tif_setupencode)(tif))
			return ((tmsize_t)(-1));
		tif->tif_flags |= TIFF_CODERSETUP;
	}
	tif->tif_flags &= ~TIFF_POSTENCODE;

	/*
	 * Clamp write amount to the tile size.  This is mostly
	 * done so that callers can pass in some large number
	 * (e.g. -1) and have the tile size used instead.
	 */
	if ( cc < 1 || cc > tif->tif_tilesize)
		cc = tif->tif_tilesize;

    /* shortcut to avoid an extra memcpy() */
    if( td->td_compression == COMPRESSION_NONE )
    {
        /* swab if needed - note that source buffer will be altered */
        tif->tif_postdecode( tif, (uint8*) data, cc );

        if (!isFillOrder(tif, td->td_fillorder) &&
            (tif->tif_flags & TIFF_NOBITREV) == 0)
            TIFFReverseBits((uint8*) data, cc);

        if (cc > 0 &&
            !TIFFAppendToStrip(tif, tile, (uint8*) data, cc))
            return ((tmsize_t) -1);
        return (cc);
    }

    sample = (uint16)(tile/td->td_stripsperimage);
    if (!(*tif->tif_preencode)(tif, sample))
        return ((tmsize_t)(-1));
        /* swab if needed - note that source buffer will be altered */
	tif->tif_postdecode( tif, (uint8*) data, cc );

	if (!(*tif->tif_encodetile)(tif, (uint8*) data, cc, sample))
		return ((tmsize_t) -1);
	if (!(*tif->tif_postencode)(tif))
		return ((tmsize_t)(-1));
	if (!isFillOrder(tif, td->td_fillorder) &&
	    (tif->tif_flags & TIFF_NOBITREV) == 0)
		TIFFReverseBits((uint8*)tif->tif_rawdata, tif->tif_rawcc);
	if (tif->tif_rawcc > 0 && !TIFFAppendToStrip(tif, tile,
	    tif->tif_rawdata, tif->tif_rawcc))
		return ((tmsize_t)(-1));
	tif->tif_rawcc = 0;
	tif->tif_rawcp = tif->tif_rawdata;
	return (cc);
}

/*
 * Encode the supplied data and write it to the
 * specified strip.
 *
 * NB: Image length must be setup before writing.
 */
tmsize_t
TIFFWriteEncodedStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc)
{
	static const char module[] = "TIFFWriteEncodedStrip";
	TIFFDirectory *td = &tif->tif_dir;
	uint16 sample;

	if (!WRITECHECKSTRIPS(tif, module))
		return ((tmsize_t) -1);
	/*
	 * Check strip array to make sure there's space.
	 * We don't support dynamically growing files that
	 * have data organized in separate bitplanes because
	 * it's too painful.  In that case we require that
	 * the imagelength be set properly before the first
	 * write (so that the strips array will be fully
	 * allocated above).
	 */
	if (strip >= td->td_nstrips) {
		if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
			TIFFErrorExt(tif->tif_clientdata, module,
			    "Can not grow image by strips when using separate planes");
			return ((tmsize_t) -1);
		}
		if (!TIFFGrowStrips(tif, 1, module))
			return ((tmsize_t) -1);
		td->td_stripsperimage =
		    TIFFhowmany_32(td->td_imagelength, td->td_rowsperstrip);  
	}
	/*
	 * Handle delayed allocation of data buffer.  This
	 * permits it to be sized according to the directory
	 * info.
	 */
	if (!BUFFERCHECK(tif))
		return ((tmsize_t) -1);

        tif->tif_flags |= TIFF_BUF4WRITE;
	tif->tif_curstrip = strip;

        if (td->td_stripsperimage == 0) {
                TIFFErrorExt(tif->tif_clientdata, module, "Zero strips per image");
                return ((tmsize_t) -1);
        }

	tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
	if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
		if (!(*tif->tif_setupencode)(tif))
			return ((tmsize_t) -1);
		tif->tif_flags |= TIFF_CODERSETUP;
	}

	if( td->td_stripbytecount[strip] > 0 )
        {
            /* Make sure that at the first attempt of rewriting the tile, we will have */
            /* more bytes available in the output buffer than the previous byte count, */
            /* so that TIFFAppendToStrip() will detect the overflow when it is called the first */
            /* time if the new compressed tile is bigger than the older one. (GDAL #4771) */
            if( tif->tif_rawdatasize <= (tmsize_t)td->td_stripbytecount[strip] )
            {
                if( !(TIFFWriteBufferSetup(tif, NULL,
                    (tmsize_t)TIFFroundup_64((uint64)(td->td_stripbytecount[strip] + 1), 1024))) )
                    return ((tmsize_t)(-1));
            }

	    /* Force TIFFAppendToStrip() to consider placing data at end
               of file. */
            tif->tif_curoff = 0;
        }

    tif->tif_rawcc = 0;
    tif->tif_rawcp = tif->tif_rawdata;

	tif->tif_flags &= ~TIFF_POSTENCODE;

    /* shortcut to avoid an extra memcpy() */
    if( td->td_compression == COMPRESSION_NONE )
    {
        /* swab if needed - note that source buffer will be altered */
        tif->tif_postdecode( tif, (uint8*) data, cc );

        if (!isFillOrder(tif, td->td_fillorder) &&
            (tif->tif_flags & TIFF_NOBITREV) == 0)
            TIFFReverseBits((uint8*) data, cc);

        if (cc > 0 &&
            !TIFFAppendToStrip(tif, strip, (uint8*) data, cc))
            return ((tmsize_t) -1);
        return (cc);
    }

	sample = (uint16)(strip / td->td_stripsperimage);
	if (!(*tif->tif_preencode)(tif, sample))
		return ((tmsize_t) -1);
//.........这里部分代码省略.........

/*
 * Encode the supplied data and write it to the
 * specified tile.  There must be space for the
 * data.  The function clamps individual writes
 * to a tile to the tile size, but does not (and
 * can not) check that multiple writes to the same
 * tile do not write more than tile size data.
 *
 * NB: Image length must be setup before writing; this
 *     interface does not support automatically growing
 *     the image on each write (as TIFFWriteScanline does).
 */
tsize_t
TIFFWriteEncodedTile(TIFF* tif, ttile_t tile, tdata_t data, tsize_t cc)
{
	static const char module[] = "TIFFWriteEncodedTile";
	TIFFDirectory *td;
	tsample_t sample;

	if (!WRITECHECKTILES(tif, module))
		return ((tsize_t) -1);
	td = &tif->tif_dir;
	if (tile >= td->td_nstrips) {
		TIFFErrorExt(tif->tif_clientdata, module, "%s: Tile %lu out of range, max %lu",
		    tif->tif_name, (unsigned long) tile, (unsigned long) td->td_nstrips);
		return ((tsize_t) -1);
	}
	/*
	 * Handle delayed allocation of data buffer.  This
	 * permits it to be sized more intelligently (using
	 * directory information).
	 */
	if (!BUFFERCHECK(tif))
		return ((tsize_t) -1);
	tif->tif_curtile = tile;

	tif->tif_rawcc = 0;
	tif->tif_rawcp = tif->tif_rawdata;

        if( td->td_stripbytecount[tile] > 0 )
        {
	    /* Force TIFFAppendToStrip() to consider placing data at end
               of file. */
            tif->tif_curoff = 0;
        }
        
	/* 
	 * Compute tiles per row & per column to compute
	 * current row and column
	 */
	tif->tif_row = (tile % TIFFhowmany(td->td_imagelength, td->td_tilelength))
		* td->td_tilelength;
	tif->tif_col = (tile % TIFFhowmany(td->td_imagewidth, td->td_tilewidth))
		* td->td_tilewidth;

	if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
		if (!(*tif->tif_setupencode)(tif))
			return ((tsize_t) -1);
		tif->tif_flags |= TIFF_CODERSETUP;
	}
	tif->tif_flags &= ~TIFF_POSTENCODE;
	sample = (tsample_t)(tile/td->td_stripsperimage);
	if (!(*tif->tif_preencode)(tif, sample))
		return ((tsize_t) -1);
	/*
	 * Clamp write amount to the tile size.  This is mostly
	 * done so that callers can pass in some large number
	 * (e.g. -1) and have the tile size used instead.
	 */
	if ( cc < 1 || cc > tif->tif_tilesize)
		cc = tif->tif_tilesize;

        /* swab if needed - note that source buffer will be altered */
        tif->tif_postdecode( tif, (tidata_t) data, cc );

	if (!(*tif->tif_encodetile)(tif, (tidata_t) data, cc, sample))
		return ((tsize_t) 0);
	if (!(*tif->tif_postencode)(tif))
		return ((tsize_t) -1);
	if (!isFillOrder(tif, td->td_fillorder) &&
	    (tif->tif_flags & TIFF_NOBITREV) == 0)
		TIFFReverseBits((unsigned char *)tif->tif_rawdata, tif->tif_rawcc);
	if (tif->tif_rawcc > 0 && !TIFFAppendToStrip(tif, tile,
	    tif->tif_rawdata, tif->tif_rawcc))
		return ((tsize_t) -1);
	tif->tif_rawcc = 0;
	tif->tif_rawcp = tif->tif_rawdata;
	return (cc);
}

/*
 * Encode the supplied data and write it to the
 * specified strip.
 *
 * NB: Image length must be setup before writing.
 */
tsize_t
TIFFWriteEncodedStrip(TIFF* tif, tstrip_t strip, tdata_t data, tsize_t cc)
{
	static const char module[] = "TIFFWriteEncodedStrip";
	TIFFDirectory *td = &tif->tif_dir;
	tsample_t sample;

	if (!WRITECHECKSTRIPS(tif, module))
		return ((tsize_t) -1);
	/*
	 * Check strip array to make sure there's space.
	 * We don't support dynamically growing files that
	 * have data organized in separate bitplanes because
	 * it's too painful.  In that case we require that
	 * the imagelength be set properly before the first
	 * write (so that the strips array will be fully
	 * allocated above).
	 */
	if (strip >= td->td_nstrips) {
		if (td->td_planarconfig == PLANARCONFIG_SEPARATE) {
			TIFFErrorExt(tif->tif_clientdata, tif->tif_name,
		"Can not grow image by strips when using separate planes");
			return ((tsize_t) -1);
		}
		if (!TIFFGrowStrips(tif, 1, module))
			return ((tsize_t) -1);
		td->td_stripsperimage =
		    TIFFhowmany(td->td_imagelength, td->td_rowsperstrip);
	}
	/*
	 * Handle delayed allocation of data buffer.  This
	 * permits it to be sized according to the directory
	 * info.
	 */
	if (!BUFFERCHECK(tif))
		return ((tsize_t) -1);
	tif->tif_curstrip = strip;
	tif->tif_row = (strip % td->td_stripsperimage) * td->td_rowsperstrip;
	if ((tif->tif_flags & TIFF_CODERSETUP) == 0) {
		if (!(*tif->tif_setupencode)(tif))
			return ((tsize_t) -1);
		tif->tif_flags |= TIFF_CODERSETUP;
	}
        
	tif->tif_rawcc = 0;
	tif->tif_rawcp = tif->tif_rawdata;

        if( td->td_stripbytecount[strip] > 0 )
        {
	    /* Force TIFFAppendToStrip() to consider placing data at end
               of file. */
            tif->tif_curoff = 0;
        }
        
	tif->tif_flags &= ~TIFF_POSTENCODE;
	sample = (tsample_t)(strip / td->td_stripsperimage);
	if (!(*tif->tif_preencode)(tif, sample))
		return ((tsize_t) -1);

        /* swab if needed - note that source buffer will be altered */
        tif->tif_postdecode( tif, (tidata_t) data, cc );

	if (!(*tif->tif_encodestrip)(tif, (tidata_t) data, cc, sample))
		return ((tsize_t) 0);
	if (!(*tif->tif_postencode)(tif))
		return ((tsize_t) -1);
	if (!isFillOrder(tif, td->td_fillorder) &&
	    (tif->tif_flags & TIFF_NOBITREV) == 0)
		TIFFReverseBits(tif->tif_rawdata, tif->tif_rawcc);
	if (tif->tif_rawcc > 0 &&
	    !TIFFAppendToStrip(tif, strip, tif->tif_rawdata, tif->tif_rawcc))
		return ((tsize_t) -1);
	tif->tif_rawcc = 0;
	tif->tif_rawcp = tif->tif_rawdata;
	return (cc);
}