32 lines
941 B
C
32 lines
941 B
C
#pragma once
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#include "buffer.h"
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#include <pthread.h>
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typedef struct buffer_lock_s {
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const char *name;
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pthread_mutex_t lock;
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pthread_cond_t cond_wait;
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buffer_t *buf;
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uint64_t buf_time_us;
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int counter;
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int refs;
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uint64_t timeout_us;
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} buffer_lock_t;
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#define DEFAULT_BUFFER_LOCK_TIMEOUT 16 // ~60fps
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#define DEFINE_BUFFER_LOCK(_name, _timeout_ms) static buffer_lock_t _name = { \
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.name = #_name, \
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.lock = PTHREAD_MUTEX_INITIALIZER, \
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.cond_wait = PTHREAD_COND_INITIALIZER, \
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.timeout_us = (_timeout_ms > DEFAULT_BUFFER_LOCK_TIMEOUT ? _timeout_ms : DEFAULT_BUFFER_LOCK_TIMEOUT) * 1000LL, \
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};
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void buffer_lock_capture(buffer_lock_t *buf_lock, buffer_t *buf);
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buffer_t *buffer_lock_get(buffer_lock_t *buf_lock, int timeout_s, int *counter);
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bool buffer_lock_needs_buffer(buffer_lock_t *buf_lock);
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void buffer_lock_use(buffer_lock_t *buf_lock, int ref);
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bool buffer_lock_is_used(buffer_lock_t *buf_lock);
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