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add an API so that the number of steps required for a translation path can be acquired

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don't transcode via SLINEAR when the option is enabled but there is a direct path from the source to the destination


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@20962 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Kevin P. Fleming
2006-04-17 16:42:03 +00:00
parent 080298dad4
commit 987f24840c
3 changed files with 30 additions and 9 deletions
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include/asterisk/translate.h
+13 -5
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@@ -1,7 +1,7 @@
/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 1999 - 2005, Digium, Inc.
* Copyright (C) 1999 - 2006, Digium, Inc.
*
* Mark Spencer <markster@digium.com>
*
@@ -145,7 +145,7 @@ struct ast_trans_pvt;
* \brief Register a translator
* \param t populated ast_translator structure
* This registers a codec translator with asterisk
* Returns 0 on success, -1 on failure
* \return 0 on success, -1 on failure
*/
int ast_register_translator(struct ast_translator *t, void *module);
@@ -153,7 +153,7 @@ int ast_register_translator(struct ast_translator *t, void *module);
* \brief Unregister a translator
* \param t translator to unregister
* Unregisters the given tranlator
* Returns 0 on success, -1 on failure
* \return 0 on success, -1 on failure
*/
int ast_unregister_translator(struct ast_translator *t);
@@ -171,7 +171,7 @@ int ast_translator_best_choice(int *dsts, int *srcs);
* \param dest destination format
* \param source source format
* Build a path (possibly NULL) from source to dest
* Returns ast_trans_pvt on success, NULL on failure
* \return ast_trans_pvt on success, NULL on failure
* */
struct ast_trans_pvt *ast_translator_build_path(int dest, int source);
@@ -189,10 +189,18 @@ void ast_translator_free_path(struct ast_trans_pvt *tr);
* \param consume Whether or not to free the original frame
* Apply an input frame into the translator and receive zero or one output frames. Consume
* determines whether the original frame should be freed
* Returns an ast_frame of the new translation format on success, NULL on failure
* \return an ast_frame of the new translation format on success, NULL on failure
*/
struct ast_frame *ast_translate(struct ast_trans_pvt *tr, struct ast_frame *f, int consume);
/*!
* \brief Returns the number of steps required to convert from 'src' to 'dest'.
* \param dest Destination format
* \param src Source format
* \return the number of translation steps required, or -1 if no path is available
*/
unsigned int ast_translate_path_steps(unsigned int dest, unsigned int src);
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif