libs/tiff/tif_fax3.c

71 	const tif_char* bitmap;		/* bit reversal table */
73 	int	bit;			/* current i/o bit in byte */
86 	int	bit;			/* current i/o bit in byte */
111     uint32 BitAcc;			/* bit accumulator */		\
119     const tif_char* bitmap = sp->bitmap;/* input data bit reverser */	\
130     BitsAvail = sp->bit;						\
139     sp->bit = BitsAvail;						\
156 	sp->bit = 0;			/* force initial read */
160 	 * Decoder assumes lsb-to-msb bit order.  Note that we select
279 		is1D = GetBits(1);	/* 1D/2D-encoding tag bit */
314  * For machines with 64-bit longs this is <16 bytes; otherwise
539 	(sp)->data = 0, (sp)->bit = 8;				\
546 	data = 0, bit = 8;					\
551 	while (length > bit) {					\
552 		data |= bits >> (length - bit);			\
553 		length -= bit;					\
556 	data |= (bits & _msbmask[length]) << (bit - length);	\
557 	bit -= length;						\
558 	if (bit == 0)						\
563  * Write a variable-length bit-value to
571 	tif_int bit = sp->bit;
577 	sp->bit = bit;
589     printf("%08X/%-2d: %s%5d\t", data, bit, DEBUG_COLOR(what), len);	\
606 	tif_int bit = sp->bit;
636 	sp->bit = bit;
642  * here.  We also handle writing the tag bit for the next
649 	tif_int bit = sp->bit;
655 		 * Force bit alignment so EOL will terminate on
656 		 * a byte boundary.  That is, force the bit alignment
660 		if (align != sp->bit) {
661 			if (align > sp->bit)
662 				align = sp->bit + (8 - align);
664 				align = sp->bit - align;
676 	sp->bit = bit;
691 	sp->bit = 8;
772  * table.  The ``base'' of the bit string is supplied
773  * along with the start+end bit indices.
790 		if (span > bits)	/* constrain span to bit range */
851 		if (span > bits)	/* constrain span to bit range */
898  * Return the offset of the next bit in the range
900  * color.  The end, be, is returned if no such bit
906  * Like finddiff, but also check the starting bit
938 		if (sp->bit != 8)			/* byte-align */
1058 	if (sp->bit != 8)
1327 		tif->tif_flags |= TIFF_NOBITREV;/* decoder does bit reversal */
1458 	if (sp->bit != 8)