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7b0e3b92fd
This patch is the first cut at adding stream support to the bridging framework. Changes were made to the framework that allows mapping of stream topologies to a bridge's supported media types. The first channel to enter a bridge initially defines the media types for a bridge (i.e. a one to one mapping is created between the bridge and the first channel). Subsequently added channels merge their media types into the bridge's adding to it when necessary. This allows channels with different sized topologies to map correctly to each other according to media type. The bridge drops any frame that does not have a matching index into a given write stream. For now though, bridge_simple will align its two channels according to size or first to join. Once both channels join the bridge the one with the most streams will indicate to the other channel to update its streams to be the same as that of the other. If both channels have the same number of streams then the first channel to join is chosen as the stream base. A topology change source was also added to a channel when a stream toplogy change request is made. This allows subsystems to know whether or not they initiated a change request. Thus avoiding potential recursive situations. ASTERISK-26966 #close Change-Id: I1eb5987921dd80c3cdcf52accc136393ca2d4163
36 lines
1.7 KiB
C
36 lines
1.7 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2012, Digium, Inc.
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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* \brief Internal channel functions for channel.c to use
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*/
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#define ast_channel_internal_alloc(destructor, assignedid, requestor) __ast_channel_internal_alloc(destructor, assignedid, requestor, __FILE__, __LINE__, __PRETTY_FUNCTION__)
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struct ast_channel *__ast_channel_internal_alloc(void (*destructor)(void *obj), const struct ast_assigned_ids *assignedids, const struct ast_channel *requestor, const char *file, int line, const char *function);
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void ast_channel_internal_finalize(struct ast_channel *chan);
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int ast_channel_internal_is_finalized(struct ast_channel *chan);
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void ast_channel_internal_cleanup(struct ast_channel *chan);
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int ast_channel_internal_setup_topics(struct ast_channel *chan);
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void ast_channel_internal_errno_set(enum ast_channel_error error);
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enum ast_channel_error ast_channel_internal_errno(void);
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void ast_channel_internal_set_stream_topology(struct ast_channel *chan,
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struct ast_stream_topology *topology);
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void ast_channel_internal_set_stream_topology_change_source(
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struct ast_channel *chan, void *change_source);
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void ast_channel_internal_swap_stream_topology(struct ast_channel *chan1,
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struct ast_channel *chan2);
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