Add a switch for writing a timecode to the stream; useful for latency debugging.

[nageru] / mixer.h

diff --git a/mixer.h b/mixer.h
index 191ea3dfe7b0835fecf011dcfac96c9e3cb2165d..2543c24962ccbc960ec1c35c5ee7b512183fe85e 100644 (file)
--- a/mixer.h
+++ b/mixer.h
@@ -39,6 +39,7 @@
 class ALSAOutput;
 class ChromaSubsampler;
 class DeckLinkOutput;
+class TimecodeRenderer;
 class QSurface;
 class QSurfaceFormat;
 
@@ -321,6 +322,14 @@ public:
                desired_output_video_mode = mode;
        }
 
+       void set_display_timecode_in_stream(bool enable) {
+               display_timecode_in_stream = enable;
+       }
+
+       void set_display_timecode_on_stdout(bool enable) {
+               display_timecode_on_stdout = enable;
+       }
+
 private:
        struct CaptureCard;
 
@@ -335,6 +344,7 @@ private:
        void thread_func();
        void handle_hotplugged_cards();
        void schedule_audio_resampling_tasks(unsigned dropped_frames, int num_samples_per_frame, int length_per_frame, bool is_preroll, std::chrono::steady_clock::time_point frame_timestamp);
+       std::string get_timecode_text() const;
        void render_one_frame(int64_t duration);
        void audio_thread_func();
        void release_display_frame(DisplayFrame *frame);
@@ -366,10 +376,15 @@ private:
        std::unique_ptr<ChromaSubsampler> chroma_subsampler;
        std::unique_ptr<VideoEncoder> video_encoder;
 
+       std::unique_ptr<TimecodeRenderer> timecode_renderer;
+       std::atomic<bool> display_timecode_in_stream{false};
+       std::atomic<bool> display_timecode_on_stdout{false};
+
        // Effects part of <display_chain>. Owned by <display_chain>.
        movit::FlatInput *display_input;
 
        int64_t pts_int = 0;  // In TIMEBASE units.
+       unsigned frame_num = 0;
 
        // Accumulated errors in number of 1/TIMEBASE audio samples. If OUTPUT_FREQUENCY divided by
        // frame rate is integer, will always stay zero.