Move IAX firmware related functionality into separate files.

This patch is mostly a reorganization of existing code with a few exceptions:

* Added doxygen comments to all of the extracted functions.

* Split reload_firmware(int unload) into iax_firmware_reload() and
  iax_firmware_unload() for readability.

* Create iax_firmware_traverse() to support the 'iax2 show firmware' CLI
  command.

* Renamed iax_check_version() to iax_firmware_get_version() and change its
  arguments and return value so that it returns a success/failure value and sets
  the selected version into an out parameter to avoid confusion with failure and
  version 0.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@380695 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/iax2/include/firmware.h

@@ -0,0 +1,105 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2013, Digium, Inc.
+ *
+ * Mark Spencer <markster@digium.com>
+ *
+ * See http://www.asterisk.org for more information about
+ * the Asterisk project. Please do not directly contact
+ * any of the maintainers of this project for assistance;
+ * the project provides a web site, mailing lists and IRC
+ * channels for your use.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*! \file
+ *
+ * \brief IAX Firmware Support header file
+ */
+
+#ifndef _IAX2_FIRMWARE_H
+#define _IAX2_FIRMWARE_H
+
+#include "parser.h"
+
+/*!
+ * \internal
+ * \brief Reload the list of available firmware.
+ *
+ * Searches the IAX firmware directory, adding new firmware that is available
+ * and removing firmware that is no longer available.
+ *
+ * \return Nothing
+ */
+void iax_firmware_reload(void);
+
+/*!
+ * \internal
+ * \brief Unload all of the currently loaded firmware.
+ *
+ * return Nothing
+ */
+void iax_firmware_unload(void);
+
+/*!
+ * \internal
+ * \brief Determine the version number of the specified firmware.
+ *
+ * \param      device_name The device name of the firmware for which we want the
+ *                         version.
+ * \param[out] version     Pointer to a variable where the version number is
+ *                         stored upon return.
+ *
+ * \retval 1 on success
+ * \retval 0 on failure
+ */
+int iax_firmware_get_version(const char *device_name,
+	uint16_t *version);
+
+/*!
+ * \internal
+ * \brief Add firwmare related IEs to an IAX2 IE buffer.
+ *
+ * \param ie_data     The IE buffer being appended to.
+ * \param device_name The name of the requested firmware.
+ * \param block_desc  The requested firmware block identification.
+ *
+ * Search the list of loaded firmware for \c device_name and, if found, add the
+ * appropriate FWBLOCKDESC and FWBLOCKDATA IEs to the specified \c ie_data
+ * list.
+ *
+ * \retval 0 on success
+ * \retval non-zero on failure
+ */
+int iax_firmware_append(struct iax_ie_data *ie_data,
+	const char *device_name, unsigned int block_desc);
+
+/*!
+ * \internal
+ * \brief Iterate over the list of currently loaded IAX firmware.
+ *
+ * \param prefix    The prefix of the device to filter for, or \c NULL to visit
+ *                  all firmware records.
+ * \param callback  A pointer to a function to call for each firmware record
+ *                  that is visited.
+ * \param user_data A pointer to user supplied data that will be passed to the
+ *                  \c callback function each time it is invoked.
+ *
+ * This function visits each of the elements in the IAX firmware list, calling
+ * the specfied \c callback for each element. Iteration continues until the end
+ * of the list is reached, or the \c callback returns non-zero.
+ *
+ * The \c callback function receives a pointer to the firmware header and the
+ * value of the \c user_data argument that was passed in, which may be \c NULL.
+ *
+ * \return Nothing
+ */
+void iax_firmware_traverse(const char *prefix,
+	int (*callback)(struct ast_iax2_firmware_header *header, void *user_data),
+	void *user_data);
+
+#endif

channels/iax2/include/parser.h

@@ -18,6 +18,7 @@
 #ifndef _IAX2_PARSER_H
 #define _IAX2_PARSER_H
 
+#include "asterisk/frame.h"
 #include "asterisk/linkedlists.h"
 #include "asterisk/crypto.h"
 #include "iax2.h"