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| struct | SendStats |
| | How long frame sends block the httpd task (every /stream send runs on it, and so does /commands). More...
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bool | start (httpd_handle_t server, FrameStore &store) |
| | Register the /stream WebSocket endpoint and start the stream task (core 1, priority 4).
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void | stop () |
| | Stop the stream task and release all resources. Call BEFORE httpd_stop. Safe to call repeatedly.
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uint32_t | frames_sent () const |
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SendStats | take_send_stats () |
| | The send counters; resets max_us. For the stats line (one reader).
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| size_t | viewer_count () const |
| | Connected /stream viewers (0 to frames::kMaxViewers).
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static void | on_session_closed (httpd_handle_t server, int sockfd) |
| | httpd close_fn: forget the viewer and close the socket (required when close_fn is set).
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static constexpr uint32_t | kSlowSendUs = 200000 |
| | 200 ms: a visible hitch at 16 fps
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◆ viewer_count()
| size_t StreamBroadcaster::viewer_count |
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const |
Connected /stream viewers (0 to frames::kMaxViewers).
Safe from any task, including the httpd task (the /commands reply): it takes the broadcaster mutex, which every holder keeps for a few microseconds only and never while calling back into this method, so the caller cannot deadlock and waits at most that long (the FreeRTOS mutex has priority inheritance). Returns 0 before start() and once stop() has returned. Like the httpd callbacks it must not run concurrently with stop() (which frees the mutex); stop() has no caller today, and httpd must be stopped first.
The documentation for this class was generated from the following files:
1.12.0