108fe5818e
A skipped frame is detected when the producer offers a frame while the current pending frame has not been consumed. However, the producer (in practice the decoder) is not interested in the fact that a frame has been skipped, only the consumer (the renderer) is. Therefore, expose the skipped count in consumer_take_frame() instead of a flag in the producer_offer_frame(). This allows to manage the skipped and rendered frames count at the same place, and remove fps_counter from decoder.
60 lines
1.2 KiB
C
60 lines
1.2 KiB
C
#ifndef FPSCOUNTER_H
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#define FPSCOUNTER_H
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#include "common.h"
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#include <stdatomic.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include "util/thread.h"
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struct fps_counter {
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sc_thread thread;
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sc_mutex mutex;
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sc_cond state_cond;
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bool thread_started;
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// atomic so that we can check without locking the mutex
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// if the FPS counter is disabled, we don't want to lock unnecessarily
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atomic_bool started;
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// the following fields are protected by the mutex
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bool interrupted;
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unsigned nr_rendered;
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unsigned nr_skipped;
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uint32_t next_timestamp;
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};
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bool
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fps_counter_init(struct fps_counter *counter);
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void
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fps_counter_destroy(struct fps_counter *counter);
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bool
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fps_counter_start(struct fps_counter *counter);
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void
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fps_counter_stop(struct fps_counter *counter);
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bool
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fps_counter_is_started(struct fps_counter *counter);
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// request to stop the thread (on quit)
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// must be called before fps_counter_join()
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void
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fps_counter_interrupt(struct fps_counter *counter);
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void
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fps_counter_join(struct fps_counter *counter);
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void
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fps_counter_add_rendered_frame(struct fps_counter *counter);
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void
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fps_counter_add_skipped_frames(struct fps_counter *counter, unsigned n);
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#endif
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