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Isolate frames returned from a DSP instance or codec translator.

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The reasoning for these changes are the same as what I wrote in the commit
message for rev 222878.


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@224931 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Russell Bryant
2009-10-21 02:59:54 +00:00
parent 0db2d51ac1
commit 9d65850202
7 changed files with 12 additions and 123 deletions
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13
include/asterisk/dsp.h
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@@ -108,17 +108,4 @@ int ast_dsp_get_tstate(struct ast_dsp *dsp);
/*! \brief Get tcount (Threshold counter) */
int ast_dsp_get_tcount(struct ast_dsp *dsp);
/*!
* \brief Hint that a frame from a dsp was freed
*
* This is called from ast_frame_free if AST_FRFLAG_FROM_DSP is set. This occurs
* because it is possible for the dsp to be freed while someone still holds a reference
* to the frame that is in that dsp. This has been known to happen when the dsp on a Zap
* channel detects a busy signal. The channel is hung up, and the application that read the
* frame to begin with still has a reference to the frame.
*
* \return nothing
*/
void ast_dsp_frame_freed(struct ast_frame *fr);
#endif /* _ASTERISK_DSP_H */

8
include/asterisk/frame.h
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@@ -127,14 +127,6 @@ enum ast_frame_type {
enum {
/*! This frame contains valid timing information */
AST_FRFLAG_HAS_TIMING_INFO = (1 << 0),
/*! This frame came from a translator and is still the original frame.
* The translator can not be free'd if the frame inside of it still has
* this flag set. */
AST_FRFLAG_FROM_TRANSLATOR = (1 << 1),
/*! This frame came from a dsp and is still the original frame.
* The dsp cannot be free'd if the frame inside of it still has
* this flag set. */
AST_FRFLAG_FROM_DSP = (1 << 2),
};
/*! \brief Data structure associated with a single frame of data

18
include/asterisk/translate.h
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@@ -137,10 +137,6 @@ struct ast_trans_pvt {
int samples; /*!< samples available in outbuf */
/*!
* \brief actual space used in outbuf
*
* Also, for the sake of ABI compatability, a magic value of -1 in this
* field means that the pvt has been requested to be destroyed, but is
* pending destruction until ast_translate_frame_freed() gets called.
*/
int datalen;
void *pvt; /*!< more private data, if any */
@@ -252,20 +248,6 @@ unsigned int ast_translate_path_steps(unsigned int dest, unsigned int src);
*/
unsigned int ast_translate_available_formats(unsigned int dest, unsigned int src);
/*!
* \brief Hint that a frame from a translator has been freed
*
* This is sort of a hack. This function gets called when ast_frame_free() gets
* called on a frame that has the AST_FRFLAG_FROM_TRANSLATOR flag set. This is
* because it is possible for a translation path to be destroyed while a frame
* from a translator is still in use. Specifically, this happens if a masquerade
* happens after a call to ast_read() but before the frame is done being processed,
* since the frame processing is generally done without the channel lock held.
*
* \return nothing
*/
void ast_translate_frame_freed(struct ast_frame *fr);
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif