move openbsc/* to repos root

This is the first step in creating this repository from the legacy openbsc.git.

Like all other Osmocom repositories, keep the autoconf and automake files in
the repository root. openbsc.git has been the sole exception, which ends now.

Change-Id: I9c6f2a448d9cb1cc088cf1cf6918b69d7e69b4e7

1 files changed, 126 insertions, 0 deletions

diff --git a/include/openbsc/v42bis_private.h b/include/openbsc/v42bis_private.h
new file mode 100644
index 000000000..daa5ea315
--- /dev/null
+++ b/include/openbsc/v42bis_private.h
@@ -0,0 +1,126 @@
+/*
+ * SpanDSP - a series of DSP components for telephony
+ *
+ * private/v42bis.h
+ *
+ * Written by Steve Underwood <steveu@coppice.org>
+ *
+ * Copyright (C) 2005 Steve Underwood
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#if !defined(_SPANDSP_PRIVATE_V42BIS_H_)
+#define _SPANDSP_PRIVATE_V42BIS_H_
+
+/*!
+    V.42bis dictionary node.
+    Note that 0 is not a valid node to point to (0 is always a control code), so 0 is used
+    as a "no such value" marker in this structure.
+*/
+typedef struct
+{
+    /*! \brief The value of the octet represented by the current dictionary node */
+    uint8_t node_octet;
+    /*! \brief The parent of this node */
+    uint16_t parent;
+    /*! \brief The first child of this node */
+    uint16_t child;
+    /*! \brief The next node at the same depth */
+    uint16_t next;
+} v42bis_dict_node_t;
+
+/*!
+    V.42bis compression or decompression. This defines the working state for a single instance
+    of V.42bis compression or decompression.
+*/
+typedef struct
+{
+    /*! \brief Compression enabled. */
+    int v42bis_parm_p0;
+    /*! \brief Compression mode. */
+    int compression_mode;
+    /*! \brief Callback function to handle output data. */
+    put_msg_func_t handler;
+    /*! \brief An opaque pointer passed in calls to the data handler. */
+    void *user_data;
+    /*! \brief The maximum amount to be passed to the data handler. */
+    int max_output_len;
+
+    /*! \brief TRUE if we are in transparent (i.e. uncompressable) mode */
+    int transparent;
+    /*! \brief Next empty dictionary entry */
+    uint16_t v42bis_parm_c1;
+    /*! \brief Current codeword size */
+    uint16_t v42bis_parm_c2;
+    /*! \brief Threshold for codeword size change */
+    uint16_t v42bis_parm_c3;
+    /*! \brief The current update point in the dictionary */
+    uint16_t update_at;
+    /*! \brief The last entry matched in the dictionary */
+    uint16_t last_matched;
+    /*! \brief The last entry added to the dictionary */
+    uint16_t last_added;
+    /*! \brief Total number of codewords in the dictionary */
+    int v42bis_parm_n2;
+    /*! \brief Maximum permitted string length */
+    int v42bis_parm_n7;
+    /*! \brief The dictionary */
+    v42bis_dict_node_t dict[V42BIS_MAX_CODEWORDS];
+
+    /*! \brief The octet string in progress */
+    uint8_t string[V42BIS_MAX_STRING_SIZE];
+    /*! \brief The current length of the octet string in progress */
+    int string_length;
+    /*! \brief The amount of the octet string in progress which has already
+        been flushed out of the buffer */
+    int flushed_length;
+
+    /*! \brief Compression performance metric */
+    uint16_t compression_performance;
+
+    /*! \brief Outgoing bit buffer (compression), or incoming bit buffer (decompression) */ 
+    uint32_t bit_buffer;
+    /*! \brief Outgoing bit count (compression), or incoming bit count (decompression) */ 
+    int bit_count;
+
+    /*! \brief The output composition buffer */
+    uint8_t output_buf[V42BIS_MAX_OUTPUT_LENGTH];
+    /*! \brief The length of the contents of the output composition buffer */    
+    int output_octet_count;
+
+    /*! \brief The current value of the escape code */
+    uint8_t escape_code;
+    /*! \brief TRUE if we just hit an escape code, and are waiting for the following octet */
+    int escaped;
+} v42bis_comp_state_t;
+
+/*!
+    V.42bis compression/decompression descriptor. This defines the working state for a
+    single instance of V.42bis compress/decompression.
+*/
+struct v42bis_state_s
+{
+    /*! \brief Compression state. */
+    v42bis_comp_state_t compress;
+    /*! \brief Decompression state. */
+    v42bis_comp_state_t decompress;
+
+    /*! \brief Error and flow logging control */
+};
+
+#endif
+/*- End of file ------------------------------------------------------------*/