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add an API call to allow channel drivers to determine which media formats are compatible (passthrough or transcode) with the format an existing channel is already using

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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@46082 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Kevin P. Fleming
2006-10-24 03:45:42 +00:00
parent eee62843d5
commit d2b10d5f4f
2 changed files with 58 additions and 2 deletions
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include/asterisk/translate.h
+16 -2
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@@ -205,12 +205,26 @@ struct ast_frame *ast_translate(struct ast_trans_pvt *tr, struct ast_frame *f, i
/*!
* \brief Returns the number of steps required to convert from 'src' to 'dest'.
* \param dest Destination format
* \param src Source format
* \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);
/*!
* \brief Mask off unavailable formats from a format bitmask
* \param dest possible destination formats
* \param src source formats
* \return the destination formats that are available in the source or translatable
*
* The result will include all formats from 'dest' that are either present
* in 'src' or translatable from a format present in 'src'.
*
* Note that only a single audio format and a single video format can be
* present in 'src', or the function will produce unexpected results.
*/
unsigned int ast_translate_available_formats(unsigned int dest, unsigned int src);
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif