git.sesse.net Git - nageru/blob - video_stream.h

   1 #ifndef _VIDEO_STREAM_H
   2 #define _VIDEO_STREAM_H 1
   3
   4 #include <stdint.h>
   5 #include <epoxy/gl.h>
   6
   7 extern "C" {
   8 #include <libavformat/avio.h>
   9 }
  10
  11 #include <condition_variable>
  12 #include <deque>
  13 #include <mutex>
  14 #include <string>
  15 #include <thread>
  16
  17 class Mux;
  18
  19 class VideoStream {
  20 public:
  21         void start();
  22         void stop();
  23
  24         void schedule_original_frame(int64_t output_pts, unsigned stream_idx, int64_t input_pts);
  25         void schedule_interpolated_frame(int64_t output_pts, unsigned stream_idx, int64_t input_first_pts, int64_t input_second_pts, float alpha);
  26
  27 private:
  28         void encode_thread_func();
  29         std::thread encode_thread;
  30
  31         static int write_packet2_thunk(void *opaque, uint8_t *buf, int buf_size, AVIODataMarkerType type, int64_t time);
  32         int write_packet2(uint8_t *buf, int buf_size, AVIODataMarkerType type, int64_t time);
  33
  34         struct QueuedFrame {
  35                 int64_t output_pts;
  36                 enum Type { ORIGINAL, INTERPOLATED } type;
  37                 unsigned stream_idx;
  38                 int64_t input_first_pts;  // The only pts for original frames.
  39
  40                 // For interpolated frames only.
  41                 int64_t input_second_pts;
  42                 float alpha;
  43                 GLuint flow_tex;
  44                 GLuint fence;  // Set when the flow is done computing.
  45         };
  46         std::deque<QueuedFrame> frame_queue;  // Under <queue_lock>.
  47         std::mutex queue_lock;
  48         std::condition_variable queue_nonempty;
  49
  50         std::unique_ptr<Mux> stream_mux;  // To HTTP.
  51         std::string stream_mux_header;
  52         bool seen_sync_markers = false;
  53 };
  54
  55 #endif  // !defined(_VIDEO_STREAM_H)