class DeckLinkOutput;
class QSurface;
class QSurfaceFormat;
+class TimecodeRenderer;
+class v210Converter;
namespace movit {
class Effect;
class EffectChain;
-class FlatInput;
class ResourcePool;
+class YCbCrInput;
} // namespace movit
// For any card that's not the master (where we pick out the frames as they
//
// N is reduced as follows: If the queue has had at least one spare frame for
// at least 50 (master) frames (ie., it's been too conservative for a second),
-// we reduce N by 1 and reset the timers. TODO: Only do this if N ever actually
-// touched the limit.
+// we reduce N by 1 and reset the timers.
//
// Whenever the queue is starved (we needed a frame but there was none),
// and we've been at N since the last starvation, N was obviously too low,
QueueLengthPolicy() {}
void reset(unsigned card_index) {
this->card_index = card_index;
- safe_queue_length = 0;
+ safe_queue_length = 1;
frames_with_at_least_one = 0;
been_at_safe_point_since_last_starvation = false;
}
- void update_policy(int queue_length); // Give in -1 for starvation.
+ void update_policy(unsigned queue_length); // Call before picking out a frame, so 0 means starvation.
unsigned get_safe_queue_length() const { return safe_queue_length; }
private:
unsigned card_index; // For debugging only.
- unsigned safe_queue_length = 0; // Called N in the comments.
+ unsigned safe_queue_length = 1; // Called N in the comments. Can never go below 1.
unsigned frames_with_at_least_one = 0;
bool been_at_safe_point_since_last_starvation = false;
};
desired_output_card_index = card_index;
}
+ std::map<uint32_t, bmusb::VideoMode> get_available_output_video_modes() const;
+
+ uint32_t get_output_video_mode() const {
+ return desired_output_video_mode;
+ }
+
+ void set_output_video_mode(uint32_t mode) {
+ 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:
- void configure_card(unsigned card_index, bmusb::CaptureInterface *capture, bool is_fake_capture, DeckLinkOutput *output);
+ struct CaptureCard;
+
+ enum class CardType {
+ LIVE_CARD,
+ FAKE_CAPTURE,
+ FFMPEG_INPUT
+ };
+ void configure_card(unsigned card_index, bmusb::CaptureInterface *capture, CardType card_type, DeckLinkOutput *output);
void set_output_card_internal(int card_index); // Should only be called from the mixer thread.
void bm_frame(unsigned card_index, uint16_t timecode,
bmusb::FrameAllocator::Frame video_frame, size_t video_offset, bmusb::VideoFormat video_format,
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);
double pts() { return double(pts_int) / TIMEBASE; }
+ // Call this _before_ trying to pull out a frame from a capture card;
+ // it will update the policy and drop the right amount of frames for you.
+ void trim_queue(CaptureCard *card, unsigned card_index);
HTTPD httpd;
- unsigned num_cards;
+ unsigned num_cards, num_video_inputs;
QSurface *mixer_surface, *h264_encoder_surface, *decklink_output_surface;
std::unique_ptr<movit::ResourcePool> resource_pool;
std::atomic<unsigned> audio_source_channel{0};
std::atomic<int> master_clock_channel{0}; // Gets overridden by <output_card_index> if set.
int output_card_index = -1; // -1 for none.
+ uint32_t output_video_mode = -1;
- // The mechanics of changing the output card are so intricately connected
+ // The mechanics of changing the output card and modes are so intricately connected
// with the work the mixer thread is doing. Thus, we don't change it directly,
// we just set this variable instead, which signals to the mixer thread that
// it should do the change before the next frame. This simplifies locking
// considerations immensely.
std::atomic<int> desired_output_card_index{-1};
+ std::atomic<uint32_t> desired_output_video_mode{0};
std::unique_ptr<movit::EffectChain> display_chain;
std::unique_ptr<ChromaSubsampler> chroma_subsampler;
+ std::unique_ptr<v210Converter> v210_converter;
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;
+ movit::YCbCrInput *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.
unsigned fractional_samples = 0;
- std::mutex card_mutex;
+ mutable std::mutex card_mutex;
bool has_bmusb_thread = false;
struct CaptureCard {
std::unique_ptr<bmusb::CaptureInterface> capture;
unsigned dropped_frames = 0; // Number of dropped frames before this one.
std::chrono::steady_clock::time_point received_timestamp = std::chrono::steady_clock::time_point::min();
};
- std::queue<NewFrame> new_frames;
+ std::deque<NewFrame> new_frames;
bool should_quit = false;
std::condition_variable new_frames_changed; // Set whenever new_frames (or should_quit) is changed.
projects / nageru / blobdiff