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/* Copyright (c) 2012-2014, 2016, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
// System dependencies
#include <pthread.h>
// JPEG dependencies
#include "mm_jpeg_dbg.h"
#include "mm_jpeg.h"
int32_t mm_jpeg_queue_init(mm_jpeg_queue_t* queue)
{
pthread_mutex_init(&queue->lock, NULL);
cam_list_init(&queue->head.list);
queue->size = 0;
return 0;
}
int32_t mm_jpeg_queue_enq(mm_jpeg_queue_t* queue, mm_jpeg_q_data_t data)
{
mm_jpeg_q_node_t* node =
(mm_jpeg_q_node_t *)malloc(sizeof(mm_jpeg_q_node_t));
if (NULL == node) {
LOGE("No memory for mm_jpeg_q_node_t");
return -1;
}
memset(node, 0, sizeof(mm_jpeg_q_node_t));
node->data = data;
pthread_mutex_lock(&queue->lock);
cam_list_add_tail_node(&node->list, &queue->head.list);
queue->size++;
pthread_mutex_unlock(&queue->lock);
return 0;
}
int32_t mm_jpeg_queue_enq_head(mm_jpeg_queue_t* queue, mm_jpeg_q_data_t data)
{
struct cam_list *head = NULL;
struct cam_list *pos = NULL;
mm_jpeg_q_node_t* node =
(mm_jpeg_q_node_t *)malloc(sizeof(mm_jpeg_q_node_t));
if (NULL == node) {
LOGE("No memory for mm_jpeg_q_node_t");
return -1;
}
memset(node, 0, sizeof(mm_jpeg_q_node_t));
node->data = data;
head = &queue->head.list;
pos = head->next;
pthread_mutex_lock(&queue->lock);
cam_list_insert_before_node(&node->list, pos);
queue->size++;
pthread_mutex_unlock(&queue->lock);
return 0;
}
mm_jpeg_q_data_t mm_jpeg_queue_deq(mm_jpeg_queue_t* queue)
{
mm_jpeg_q_data_t data;
mm_jpeg_q_node_t* node = NULL;
struct cam_list *head = NULL;
struct cam_list *pos = NULL;
memset(&data, 0, sizeof(data));
pthread_mutex_lock(&queue->lock);
head = &queue->head.list;
pos = head->next;
if (pos != head) {
node = member_of(pos, mm_jpeg_q_node_t, list);
cam_list_del_node(&node->list);
queue->size--;
}
pthread_mutex_unlock(&queue->lock);
if (NULL != node) {
data = node->data;
free(node);
}
return data;
}
uint32_t mm_jpeg_queue_get_size(mm_jpeg_queue_t* queue)
{
uint32_t size = 0;
pthread_mutex_lock(&queue->lock);
size = queue->size;
pthread_mutex_unlock(&queue->lock);
return size;
}
int32_t mm_jpeg_queue_deinit(mm_jpeg_queue_t* queue)
{
mm_jpeg_queue_flush(queue);
pthread_mutex_destroy(&queue->lock);
return 0;
}
int32_t mm_jpeg_queue_flush(mm_jpeg_queue_t* queue)
{
mm_jpeg_q_node_t* node = NULL;
struct cam_list *head = NULL;
struct cam_list *pos = NULL;
pthread_mutex_lock(&queue->lock);
head = &queue->head.list;
pos = head->next;
while(pos != head) {
node = member_of(pos, mm_jpeg_q_node_t, list);
cam_list_del_node(&node->list);
queue->size--;
/* for now we only assume there is no ptr inside data
* so we free data directly */
if (NULL != node->data.p) {
free(node->data.p);
}
free(node);
pos = pos->next;
}
queue->size = 0;
pthread_mutex_unlock(&queue->lock);
return 0;
}
mm_jpeg_q_data_t mm_jpeg_queue_peek(mm_jpeg_queue_t* queue)
{
mm_jpeg_q_data_t data;
mm_jpeg_q_node_t* node = NULL;
struct cam_list *head = NULL;
struct cam_list *pos = NULL;
memset(&data, 0, sizeof(data));
pthread_mutex_lock(&queue->lock);
head = &queue->head.list;
pos = head->next;
if (pos != head) {
node = member_of(pos, mm_jpeg_q_node_t, list);
}
pthread_mutex_unlock(&queue->lock);
if (NULL != node) {
data = node->data;
}
return data;
}
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