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move slinfactory structure definition back to header... it's just easier to use this way

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add infrastructure for whispering onto a channel


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@38422 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Kevin P. Fleming
2006-07-28 18:59:59 +00:00
parent 48c09ef517
commit 3314ea0d59
6 changed files with 134 additions and 25 deletions
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45
include/asterisk/channel.h
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@@ -268,6 +268,7 @@ struct ast_channel_tech {
};
struct ast_channel_spy_list;
struct ast_channel_whisper_buffer;
#define DEBUGCHAN_FLAG 0x80000000
#define FRAMECOUNT_INC(x) ( ((x) & DEBUGCHAN_FLAG) | ((x++) & ~DEBUGCHAN_FLAG) )
@@ -382,6 +383,7 @@ struct ast_channel {
int rawwriteformat; /*!< Raw write format */
struct ast_channel_spy_list *spies; /*!< Chan Spy stuff */
struct ast_channel_whisper_buffer *whisper; /*!< Whisper Paging buffer */
AST_LIST_ENTRY(ast_channel) chan_list; /*!< For easy linking */
struct ast_jb jb; /*!< The jitterbuffer state */
@@ -397,21 +399,20 @@ struct ast_channel {
/*! \brief Channels have this property if they can create jitter; i.e. most VoIP channels */
#define AST_CHAN_TP_CREATESJITTER (1 << 1)
/* This flag has been deprecated by the transfercapbilty data member in struct ast_channel */
/* #define AST_FLAG_DIGITAL (1 << 0) */ /* if the call is a digital ISDN call */
#define AST_FLAG_DEFER_DTMF (1 << 1) /*!< if dtmf should be deferred */
#define AST_FLAG_WRITE_INT (1 << 2) /*!< if write should be interrupt generator */
#define AST_FLAG_BLOCKING (1 << 3) /*!< if we are blocking */
#define AST_FLAG_ZOMBIE (1 << 4) /*!< if we are a zombie */
#define AST_FLAG_EXCEPTION (1 << 5) /*!< if there is a pending exception */
#define AST_FLAG_MOH (1 << 6) /*!< XXX anthm promises me this will disappear XXX listening to moh */
#define AST_FLAG_SPYING (1 << 7) /*!< XXX might also go away XXX is spying on someone */
#define AST_FLAG_SPYING (1 << 7) /*!< is spying on someone */
#define AST_FLAG_NBRIDGE (1 << 8) /*!< is it in a native bridge */
#define AST_FLAG_IN_AUTOLOOP (1 << 9) /*!< the channel is in an auto-incrementing dialplan processor,
so when ->priority is set, it will get incremented before
finding the next priority to run
*/
#define AST_FLAG_OUTGOING (1 << 10) /*! Is this call outgoing */
finding the next priority to run */
#define AST_FLAG_OUTGOING (1 << 10) /*!< Is this call outgoing */
#define AST_FLAG_WHISPER (1 << 11) /*!< Is this channel being whispered on */
/* @} */
#define AST_FEATURE_PLAY_WARNING (1 << 0)
@@ -1277,6 +1278,38 @@ const char *channelreloadreason2txt(enum channelreloadreason reason);
/*! \brief return an ast_variable list of channeltypes */
struct ast_variable *ast_channeltype_list(void);
/*!
\brief Begin 'whispering' onto a channel
\param chan The channel to whisper onto
\return 0 for success, non-zero for failure
This function will add a whisper buffer onto a channel and set a flag
causing writes to the channel to reduce the volume level of the written
audio samples, and then to mix in audio from the whisper buffer if it
is available.
Note: This function performs no locking; you must hold the channel's lock before
calling this function.
*/
int ast_channel_whisper_start(struct ast_channel *chan);
/*!
\brief Feed an audio frame into the whisper buffer on a channel
\param chan The channel to whisper onto
\return 0 for success, non-zero for failure
*/
int ast_channel_whisper_feed(struct ast_channel *chan, struct ast_frame *f);
/*!
\brief Stop 'whispering' onto a channel
\param chan The channel to whisper onto
\return 0 for success, non-zero for failure
Note: This function performs no locking; you must hold the channel's lock before
calling this function.
*/
void ast_channel_whisper_stop(struct ast_channel *chan);
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif