#include "sst_internal.h"

#ifdef CONFIG_SST_BOUNDS
#define OFFSET (4 * BOUNDEDBUFFER_SIZE)
#else
#define OFFSET 0
#endif

void init_bbuffer(struct boundedbuffer *buffer) {
	buffer->next_in = 0;
	buffer->next_out = 0;
	buffer->size = BOUNDEDBUFFER_SIZE;
}

int is_full(struct boundedbuffer *buffer) {
   	return (buffer->next_in + 1) % buffer->size == buffer->next_out;
}

int is_empty(struct boundedbuffer *buffer) {
	return buffer->next_out == buffer->next_in;
}

int produce(struct boundedbuffer *buffer, BOUNDEDBUFFER_STORAGE_TYPE data) {
	if (is_full(buffer)) {
		return -1;
	}

	buffer->data[buffer->next_in + OFFSET] = data;
	buffer->next_in = (buffer->next_in + 1) % buffer->size;

	return 0;
}

int consume(struct boundedbuffer *buffer, BOUNDEDBUFFER_STORAGE_TYPE *ret) {
	if (is_empty(buffer)) {
		return -1;
	}
	*ret = buffer->data[buffer->next_out + OFFSET];
	buffer->next_out = (buffer->next_out + 1) % buffer->size;

	return 0;
}