| /* |
| Copyright (c) 2012, 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. |
| */ |
| |
| #include <pthread.h> |
| #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, void* data) |
| { |
| mm_jpeg_q_node_t* node = |
| (mm_jpeg_q_node_t *)malloc(sizeof(mm_jpeg_q_node_t)); |
| if (NULL == node) { |
| CDBG_ERROR("%s: No memory for mm_jpeg_q_node_t", __func__); |
| 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; |
| |
| } |
| |
| void* mm_jpeg_queue_deq(mm_jpeg_queue_t* queue) |
| { |
| mm_jpeg_q_node_t* node = NULL; |
| void* data = NULL; |
| struct cam_list *head = NULL; |
| struct cam_list *pos = NULL; |
| |
| 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; |
| void* data = 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) { |
| free(node->data); |
| } |
| free(node); |
| pos = pos->next; |
| } |
| queue->size = 0; |
| pthread_mutex_unlock(&queue->lock); |
| return 0; |
| } |