Revert "Add API for channel frame deferral."
This reverts commit f073f648b8
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Multiple testsuite failures were detected after the fact.
Change-Id: I968c380418bf65c7166f6ecff30fe8e247ea6682
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f073f648b8
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fa749866c1
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@ -967,11 +967,6 @@ enum {
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* The channel is executing a subroutine or macro
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*/
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AST_FLAG_SUBROUTINE_EXEC = (1 << 27),
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/*!
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* The channel is currently in an operation where
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* frames should be deferred.
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*/
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AST_FLAG_DEFER_FRAMES = (1 << 28),
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};
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/*! \brief ast_bridge_config flags */
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@ -4676,37 +4671,4 @@ enum ast_channel_error {
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*/
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enum ast_channel_error ast_channel_errno(void);
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/*!
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* \brief Retrieve the deferred read queue.
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*/
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struct ast_readq_list *ast_channel_deferred_readq(struct ast_channel *chan);
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/*!
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* \brief Start deferring deferrable frames on this channel
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*
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* Sometimes, a channel gets entered into a mode where a "main" application
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* is tasked with servicing frames on the channel, but that application does
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* not need to act on those frames. However, it would be imprudent to simply
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* drop important frames. This function can be called so that important frames
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* will be deferred, rather than placed in the channel frame queue as normal.
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*
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* \pre chan MUST be locked before calling
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*
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* \param chan The channel on which frames should be deferred
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*/
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void ast_channel_start_defer_frames(struct ast_channel *chan);
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/*!
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* \brief Stop deferring deferrable frames on this channel
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*
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* When it is time to stop deferring frames on the channel, all deferred frames
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* will be queued onto the channel's read queue so that the next servicer of
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* the channel can handle those frames as necessary.
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*
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* \pre chan MUST be locked before calling
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*
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* \param chan The channel on which to stop deferring frames.
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*/
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void ast_channel_stop_defer_frames(struct ast_channel *chan);
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#endif /* _ASTERISK_CHANNEL_H */
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@ -1062,25 +1062,6 @@ struct ast_channel *__ast_dummy_channel_alloc(const char *file, int line, const
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return tmp;
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}
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void ast_channel_start_defer_frames(struct ast_channel *chan)
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{
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ast_set_flag(ast_channel_flags(chan), AST_FLAG_DEFER_FRAMES);
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}
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void ast_channel_stop_defer_frames(struct ast_channel *chan)
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{
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ast_clear_flag(ast_channel_flags(chan), AST_FLAG_DEFER_FRAMES);
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/* Move the deferred frames onto the channel read queue, ahead of other queued frames */
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ast_queue_frame_head(chan, AST_LIST_FIRST(ast_channel_deferred_readq(chan)));
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/* ast_frfree will mosey down the list and free them all */
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if (!AST_LIST_EMPTY(ast_channel_deferred_readq(chan))) {
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ast_frfree(AST_LIST_FIRST(ast_channel_deferred_readq(chan)));
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}
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/* Reset the list to be empty */
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AST_LIST_HEAD_INIT_NOLOCK(ast_channel_deferred_readq(chan));
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}
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static int __ast_queue_frame(struct ast_channel *chan, struct ast_frame *fin, int head, struct ast_frame *after)
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{
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struct ast_frame *f;
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@ -3902,32 +3883,6 @@ static struct ast_frame *__ast_read(struct ast_channel *chan, int dropaudio)
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if (!AST_LIST_EMPTY(ast_channel_readq(chan))) {
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int skip_dtmf = should_skip_dtmf(chan);
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if (ast_test_flag(ast_channel_flags(chan), AST_FLAG_DEFER_FRAMES)) {
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AST_LIST_TRAVERSE_SAFE_BEGIN(ast_channel_readq(chan), f, frame_list) {
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if (ast_is_deferrable_frame(f)) {
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if (f->frametype == AST_FRAME_CONTROL && f->subclass.integer == AST_CONTROL_HANGUP) {
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struct ast_frame *dup;
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/* Hangup is a special case. We want to defer the frame, but we also do not
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* want to remove it from the frame queue. So rather than just moving the frame
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* over, we duplicate it and move the copy to the deferred readq.
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*
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* The reason for this? This way, whoever calls ast_read() will get a NULL return
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* immediately and can tell the channel has hung up and do what it needs to. Also,
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* when frame deferral finishes, then whoever calls ast_read() next will also get
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* the hangup.
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*/
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dup = ast_frdup(f);
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AST_LIST_INSERT_TAIL(ast_channel_deferred_readq(chan), dup, frame_list);
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} else {
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AST_LIST_INSERT_TAIL(ast_channel_deferred_readq(chan), f, frame_list);
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AST_LIST_REMOVE_CURRENT(frame_list);
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}
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}
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}
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AST_LIST_TRAVERSE_SAFE_END;
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}
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AST_LIST_TRAVERSE_SAFE_BEGIN(ast_channel_readq(chan), f, frame_list) {
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/* We have to be picky about which frame we pull off of the readq because
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* there are cases where we want to leave DTMF frames on the queue until
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@ -221,7 +221,6 @@ struct ast_channel {
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struct stasis_cp_single *topics; /*!< Topic for all channel's events */
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struct stasis_forward *endpoint_forward; /*!< Subscription for event forwarding to endpoint's topic */
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struct stasis_forward *endpoint_cache_forward; /*!< Subscription for cache updates to endpoint's topic */
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struct ast_readq_list deferred_readq;
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};
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/*! \brief The monotonically increasing integer counter for channel uniqueids */
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@ -1682,8 +1681,3 @@ enum ast_channel_error ast_channel_internal_errno(void)
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return *error_code;
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}
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struct ast_readq_list *ast_channel_deferred_readq(struct ast_channel *chan)
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{
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return &chan->deferred_readq;
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}
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