5 #include "queue_spot_holder.h"
8 #include <libavformat/avio.h>
11 #include <condition_variable>
20 class Player : public QueueInterface {
22 Player(JPEGFrameView *destination, bool also_output_to_stream);
24 void play_clip(const Clip &clip, unsigned stream_idx);
25 void override_angle(unsigned stream_idx); // For the current clip only.
27 // Not thread-safe to set concurrently with playing.
28 // Will be called back from the player thread.
29 using done_callback_func = std::function<void()>;
30 void set_done_callback(done_callback_func cb) { done_callback = cb; }
32 // Not thread-safe to set concurrently with playing.
33 // Will be called back from the player thread.
34 using next_clip_callback_func = std::function<Clip()>;
35 void set_next_clip_callback(next_clip_callback_func cb) { next_clip_callback = cb; }
37 // Not thread-safe to set concurrently with playing.
38 // Will be called back from the player thread.
39 using progress_callback_func = std::function<void(double played_this_clip, double total_length)>;
40 void set_progress_callback(progress_callback_func cb) { progress_callback = cb; }
43 void take_queue_spot() override;
44 void release_queue_spot() override;
47 void thread_func(bool also_output_to_stream);
48 void open_output_stream();
49 static int write_packet2_thunk(void *opaque, uint8_t *buf, int buf_size, AVIODataMarkerType type, int64_t time);
50 int write_packet2(uint8_t *buf, int buf_size, AVIODataMarkerType type, int64_t time);
52 // Find the frame immediately before and after this point.
53 // Returns false if pts is after the last frame.
54 bool find_surrounding_frames(int64_t pts, int stream_idx, int64_t *pts_lower, int64_t *pts_upper);
56 JPEGFrameView *destination;
57 done_callback_func done_callback;
58 next_clip_callback_func next_clip_callback;
59 progress_callback_func progress_callback;
62 Clip current_clip; // Under mu. Can have pts_in = -1 for no clip.
63 unsigned current_stream_idx; // Under mu.
65 std::mutex queue_state_mu;
66 std::condition_variable new_clip_changed;
67 bool new_clip_ready = false; // Under queue_state_mu.
68 bool playing = false; // Under queue_state_mu.
69 int override_stream_idx = -1; // Under queue_state_mu.
71 std::unique_ptr<VideoStream> video_stream; // Can be nullptr.
73 // under queue_state_mu. Part of this instead of VideoStream so that we own
74 // its lock and can sleep on it.
75 size_t num_queued_frames = 0;
76 static constexpr size_t max_queued_frames = 10;
79 #endif // !defined(_PLAYER_H)