5 #include "frame_on_disk.h"
6 #include "queue_spot_holder.h"
9 #include <libavformat/avformat.h>
10 #include <libavformat/avio.h>
13 #include <condition_variable>
23 double compute_time_left(const std::vector<Clip> &clips, const std::map<size_t, double> &progress);
25 class Player : public QueueInterface {
29 HTTPD_STREAM_OUTPUT, // Output to global_httpd.
30 FILE_STREAM_OUTPUT // Output to file_avctx.
32 Player(JPEGFrameView *destination, StreamOutput stream_output, AVFormatContext *file_avctx = nullptr);
37 unsigned row; // Used for progress callback only.
39 void play(const Clip &clip)
41 play({ ClipWithRow{ clip, 0 } });
43 void play(const std::vector<ClipWithRow> &clips);
44 void override_angle(unsigned stream_idx); // Assumes one-clip playlist only.
46 // Not thread-safe to set concurrently with playing.
47 // Will be called back from the player thread.
48 using done_callback_func = std::function<void()>;
49 void set_done_callback(done_callback_func cb) { done_callback = cb; }
51 // Not thread-safe to set concurrently with playing.
52 // Will be called back from the player thread.
53 // The keys in the given map are row members in the vector given to play().
54 using progress_callback_func = std::function<void(const std::map<size_t, double> &progress)>;
55 void set_progress_callback(progress_callback_func cb) { progress_callback = cb; }
58 void take_queue_spot() override;
59 void release_queue_spot() override;
62 void thread_func(AVFormatContext *file_avctx);
63 void play_playlist_once();
64 void display_single_frame(int primary_stream_idx, const FrameOnDisk &primary_frame, int secondary_stream_idx, const FrameOnDisk &secondary_frame, double fade_alpha, std::chrono::steady_clock::time_point frame_start, bool snapped);
65 void open_output_stream();
66 static int write_packet2_thunk(void *opaque, uint8_t *buf, int buf_size, AVIODataMarkerType type, int64_t time);
67 int write_packet2(uint8_t *buf, int buf_size, AVIODataMarkerType type, int64_t time);
69 // Find the frame immediately before and after this point.
70 // Returns false if pts is after the last frame.
71 bool find_surrounding_frames(int64_t pts, int stream_idx, FrameOnDisk *frame_lower, FrameOnDisk *frame_upper);
73 std::thread player_thread;
74 std::atomic<bool> should_quit{ false };
76 JPEGFrameView *destination;
77 done_callback_func done_callback;
78 progress_callback_func progress_callback;
80 std::mutex queue_state_mu;
81 std::condition_variable new_clip_changed;
82 std::vector<ClipWithRow> queued_clip_list; // Under queue_state_mu.
83 bool new_clip_ready = false; // Under queue_state_mu.
84 bool playing = false; // Under queue_state_mu.
85 int override_stream_idx = -1; // Under queue_state_mu.
86 int64_t last_pts_played = -1; // Under queue_state_mu. Used by previews only.
88 std::unique_ptr<VideoStream> video_stream; // Can be nullptr.
90 std::atomic<int64_t> metric_dropped_interpolated_frame{ 0 };
91 std::atomic<int64_t> metric_dropped_unconditional_frame{ 0 };
92 std::atomic<int64_t> metric_faded_frame{ 0 };
93 std::atomic<int64_t> metric_faded_snapped_frame{ 0 };
94 std::atomic<int64_t> metric_original_frame{ 0 };
95 std::atomic<int64_t> metric_original_snapped_frame{ 0 };
96 std::atomic<int64_t> metric_refresh_frame{ 0 };
97 std::atomic<int64_t> metric_interpolated_frame{ 0 };
98 std::atomic<int64_t> metric_interpolated_faded_frame{ 0 };
100 // under queue_state_mu. Part of this instead of VideoStream so that we own
101 // its lock and can sleep on it.
102 size_t num_queued_frames = 0;
103 static constexpr size_t max_queued_frames = 10;
105 // State private to the player thread.
107 const StreamOutput stream_output;
110 #endif // !defined(_PLAYER_H)