Added some mux metrics.

[nageru] / mux.h

diff --git a/mux.h b/mux.h
index ddf97fe92a591d86ec6dbebd9614cf32fa9a0846..c6c442100c58b18c481754747693b54c8571bcbc 100644 (file)
--- a/mux.h
+++ b/mux.h
@@ -9,11 +9,30 @@ extern "C" {
 }
 
 #include <sys/types.h>
+#include <atomic>
 #include <functional>
 #include <mutex>
 #include <string>
+#include <utility>
 #include <vector>
 
+struct MuxMetrics {
+       // “written” will usually be equal video + audio + mux overhead,
+       // except that there could be buffered packets that count in audio or video
+       // but not yet in written.
+       std::atomic<int64_t> metric_video_bytes{0}, metric_audio_bytes{0}, metric_written_bytes{0};
+
+       // Registers in global_metrics.
+       void init(const std::vector<std::pair<std::string, std::string>> &labels);
+
+       void reset()
+       {
+               metric_video_bytes = 0;
+               metric_audio_bytes = 0;
+               metric_written_bytes = 0;
+       }
+};
+
 class Mux {
 public:
        enum Codec {
@@ -24,7 +43,9 @@ public:
        // Takes ownership of avctx. <write_callback> will be called every time
        // a write has been made to the video stream (id 0), with the pts of
        // the just-written frame. (write_callback can be nullptr.)
-       Mux(AVFormatContext *avctx, int width, int height, Codec video_codec, const std::string &video_extradata, const AVCodecParameters *audio_codecpar, int time_base, std::function<void(int64_t)> write_callback);
+       // Does not take ownership of <metrics>; elements in there, if any,
+       // will be added to.
+       Mux(AVFormatContext *avctx, int width, int height, Codec video_codec, const std::string &video_extradata, const AVCodecParameters *audio_codecpar, int time_base, std::function<void(int64_t)> write_callback, const std::vector<MuxMetrics *> &metrics);
        ~Mux();
        void add_packet(const AVPacket &pkt, int64_t pts, int64_t dts);
 
@@ -50,6 +71,7 @@ private:
        AVStream *avstream_video, *avstream_audio;
 
        std::function<void(int64_t)> write_callback;
+       std::vector<MuxMetrics *> metrics;
 };
 
 #endif  // !defined(_MUX_H)