Commit of build_consolidation branch

Squashed into one commit (see branch for details of the evolution of the
branch).

This brings gpcl6 and gxps into the Ghostscript build system, and a shared
set of graphics library object files for all the interpreters.

Also, brings the same configuration options to the pcl and xps products as we
have for Ghostscript.

1 files changed, 81 insertions, 0 deletions

diff --git a/base/gsbittab.h b/base/gsbittab.h
new file mode 100644
index 000000000..3a24a76a5
--- /dev/null
+++ b/base/gsbittab.h
@@ -0,0 +1,81 @@
+/* Copyright (C) 2001-2012 Artifex Software, Inc.
+   All Rights Reserved.
+
+   This software is provided AS-IS with no warranty, either express or
+   implied.
+
+   This software is distributed under license and may not be copied,
+   modified or distributed except as expressly authorized under the terms
+   of the license contained in the file LICENSE in this distribution.
+
+   Refer to licensing information at http://www.artifex.com or contact
+   Artifex Software, Inc.,  7 Mt. Lassen Drive - Suite A-134, San Rafael,
+   CA  94903, U.S.A., +1(415)492-9861, for further information.
+*/
+
+
+/* Interface to tables for bit operations */
+
+#ifndef gsbittab_INCLUDED
+#  define gsbittab_INCLUDED
+
+/*
+ * Generate tables for transforming 2, 4, 6, or 8 bits.
+ */
+#define btab2_(v0,v2,v1)\
+  v0,v1+v0,v2+v0,v2+v1+v0
+#define bit_table_2(v0,v2,v1) btab2_(v0,v2,v1)
+#define btab4_(v0,v8,v4,v2,v1)\
+  btab2_(v0,v2,v1), btab2_(v4+v0,v2,v1),\
+  btab2_(v8+v0,v2,v1), btab2_(v8+v4+v0,v2,v1)
+#define bit_table_4(v0,v8,v4,v2,v1) btab4_(v0,v8,v4,v2,v1)
+#define btab6_(v0,v20,v10,v8,v4,v2,v1)\
+  btab4_(v0,v8,v4,v2,v1), btab4_(v10+v0,v8,v4,v2,v1),\
+  btab4_(v20+v0,v8,v4,v2,v1), btab4_(v20+v10+v0,v8,v4,v2,v1)
+#define bit_table_6(v0,v20,v10,v8,v4,v2,v1) btab6_(v0,v20,v10,v8,v4,v2,v1)
+#define bit_table_8(v0,v80,v40,v20,v10,v8,v4,v2,v1)\
+  btab6_(v0,v20,v10,v8,v4,v2,v1), btab6_(v40+v0,v20,v10,v8,v4,v2,v1),\
+  btab6_(v80+v0,v20,v10,v8,v4,v2,v1), btab6_(v80+v40+v0,v20,v10,v8,v4,v2,v1)
+
+/*
+ * byte_reverse_bits[B] = the byte B with the order of bits reversed.
+ */
+extern const byte byte_reverse_bits[256];
+
+/*
+ * byte_right_mask[N] = a byte with N trailing 1s, 0 <= N <= 8.
+ */
+extern const byte byte_right_mask[9];
+
+/*
+ * byte_count_bits[B] = the number of 1-bits in a byte with value B.
+ */
+extern const byte byte_count_bits[256];
+
+/*
+ * byte_bit_run_length_N[B], for 0 <= N <= 7, gives the length of the
+ * run of 1-bits starting at bit N in a byte with value B,
+ * numbering the bits in the byte as 01234567.  If the run includes
+ * the low-order bit (i.e., might be continued into a following byte),
+ * the run length is increased by 8.
+ */
+extern const byte
+    byte_bit_run_length_0[256], byte_bit_run_length_1[256],
+    byte_bit_run_length_2[256], byte_bit_run_length_3[256],
+    byte_bit_run_length_4[256], byte_bit_run_length_5[256],
+    byte_bit_run_length_6[256], byte_bit_run_length_7[256];
+
+/*
+ * byte_bit_run_length[N] points to byte_bit_run_length_N.
+ * byte_bit_run_length_neg[N] = byte_bit_run_length[-N & 7].
+ */
+extern const byte *const byte_bit_run_length[8];
+extern const byte *const byte_bit_run_length_neg[8];
+
+/*
+ * byte_acegbdfh_to_abcdefgh[acegbdfh] = abcdefgh, where the letters
+ * denote the individual bits of the byte.
+ */
+extern const byte byte_acegbdfh_to_abcdefgh[256];
+
+#endif /* gsbittab_INCLUDED */