Only bother doing MJPEG encoding if there are any connected clients that want the...

[nageru] / shared / httpd.h

diff --git a/shared/httpd.h b/shared/httpd.h
index 5b2b266c36e70788b2daabe018251d50392fcd7a..2a628594c91beb2d556c8df3459ac526287f7d50 100644 (file)
--- a/shared/httpd.h
+++ b/shared/httpd.h
@@ -31,10 +31,15 @@ public:
        HTTPD();
        ~HTTPD();
 
+       enum StreamType {
+               MAIN_STREAM,
+               MULTICAM_STREAM,
+               NUM_STREAM_TYPES
+       };
+
        // Should be called before start().
-       void set_header(const std::string &data)
-       {
-               header = data;
+       void set_header(StreamType stream_type, const std::string &data) {
+               header[stream_type] = data;
        }
 
        // Should be called before start() (due to threading issues).
@@ -49,11 +54,14 @@ public:
 
        void start(int port);
        void stop();
-       void add_data(const char *buf, size_t size, bool keyframe, int64_t time, AVRational timebase);
+       void add_data(StreamType stream_type, const char *buf, size_t size, bool keyframe, int64_t time, AVRational timebase);
        int64_t get_num_connected_clients() const
        {
                return metric_num_connected_clients.load();
        }
+       int64_t get_num_connected_multicam_clients() const {
+               return metric_num_connected_multicam_clients.load();
+       }
 
 private:
        static int answer_to_connection_thunk(void *cls, MHD_Connection *connection,
@@ -74,8 +82,8 @@ private:
                        FRAMING_RAW,
                        FRAMING_METACUBE
                };
-               Stream(HTTPD *parent, Framing framing)
-                       : parent(parent), framing(framing) {}
+               Stream(HTTPD *parent, Framing framing, StreamType stream_type)
+                       : parent(parent), framing(framing), stream_type(stream_type) {}
 
                static ssize_t reader_callback_thunk(void *cls, uint64_t pos, char *buf, size_t max);
                ssize_t reader_callback(uint64_t pos, char *buf, size_t max);
@@ -88,6 +96,7 @@ private:
                void add_data(const char *buf, size_t size, DataType data_type, int64_t time, AVRational timebase);
                void stop();
                HTTPD *get_parent() const { return parent; }
+               StreamType get_stream_type() const { return stream_type; }
 
        private:
                HTTPD *parent;
@@ -99,6 +108,7 @@ private:
                std::deque<std::string> buffered_data;  // Protected by <buffer_mutex>.
                size_t used_of_buffered_data = 0;  // How many bytes of the first element of <buffered_data> that is already used. Protected by <mutex>.
                size_t seen_keyframe = false;
+               StreamType stream_type;
        };
 
        MHD_Daemon *mhd = nullptr;
@@ -109,10 +119,11 @@ private:
                CORSPolicy cors_policy;
        };
        std::unordered_map<std::string, Endpoint> endpoints;
-       std::string header;
+       std::string header[NUM_STREAM_TYPES];
 
        // Metrics.
-       std::atomic<int64_t> metric_num_connected_clients{ 0 };
+       std::atomic<int64_t> metric_num_connected_clients{0};
+       std::atomic<int64_t> metric_num_connected_multicam_clients{0};
 };
 
 #endif  // !defined(_HTTPD_H)