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61 lines
1.3 KiB
C
61 lines
1.3 KiB
C
#ifndef SC_DELAY_BUFFER_H
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#define SC_DELAY_BUFFER_H
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#include "common.h"
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#include <stdbool.h>
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#include "clock.h"
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#include "trait/frame_source.h"
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#include "trait/frame_sink.h"
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#include "util/thread.h"
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#include "util/tick.h"
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#include "util/vecdeque.h"
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// forward declarations
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typedef struct AVFrame AVFrame;
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struct sc_delayed_frame {
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AVFrame *frame;
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#ifndef NDEBUG
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sc_tick push_date;
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#endif
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};
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struct sc_delayed_frame_queue SC_VECDEQUE(struct sc_delayed_frame);
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struct sc_delay_buffer {
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struct sc_frame_source frame_source; // frame source trait
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struct sc_frame_sink frame_sink; // frame sink trait
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sc_tick delay;
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bool first_frame_asap;
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sc_thread thread;
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sc_mutex mutex;
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sc_cond queue_cond;
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sc_cond wait_cond;
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struct sc_clock clock;
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struct sc_delayed_frame_queue queue;
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bool stopped;
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};
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struct sc_delay_buffer_callbacks {
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bool (*on_new_frame)(struct sc_delay_buffer *db, const AVFrame *frame,
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void *userdata);
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};
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/**
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* Initialize a delay buffer.
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*
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* \param delay a (strictly) positive delay
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* \param first_frame_asap if true, do not delay the first frame (useful for
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a video stream).
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*/
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void
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sc_delay_buffer_init(struct sc_delay_buffer *db, sc_tick delay,
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bool first_frame_asap);
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#endif
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