#include <stdio.h>
#include <pthread.h>
#include <semaphore.h>
#include <unistd.h>

#include "../libpng/img.h"
#include "config.h"

typedef struct queue {
	struct queue_node_t *head;
	struct queue_node_t *tail;
} queue_t;

typedef struct mandel_t {
	int x;
	int y;
} mandel_t;

struct queue_node_t {
	mandel_t *node;
	struct queue_node_t *next;
};

typedef struct mandel_prop_t {
	int width;
	int height;
	int bail_out;
	int max_iter;
} mandel_prop_t;

typedef struct mandel_buf_t {
	queue_t *q;
	int *result_field;
	mandel_prop_t prop;
	pthread_mutex_t *lock;
	int produce_end;
} mandel_buf_t;

queue_t *initialize_queue();
void enqueue(queue_t * q, mandel_t * w, pthread_mutex_t * lock);
mandel_t *dequeue(queue_t * q, pthread_mutex_t * lock);
void destroy_queue(queue_t * q);
int is_empty(queue_t * q);