1 /*
2 * Copyright 2017 Rockchip Electronics Co. LTD
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "mpp_err.h"
18 #include "mpp_queue.h"
19
MppQueue(node_destructor func)20 MppQueue::MppQueue(node_destructor func)
21 : mpp_list(func), mFlushFlag(0)
22 {
23 sem_init(&mQueuePending, 0, 0);
24 }
25
~MppQueue()26 MppQueue::~MppQueue()
27 {
28 sem_destroy (&mQueuePending);
29 }
30
push(void * data,RK_S32 size)31 RK_S32 MppQueue::push(void *data, RK_S32 size)
32 {
33 RK_S32 ret = 0;
34
35 ret = mpp_list::add_at_tail(data, size);
36 mFlushFlag = 0;
37 sem_post(&mQueuePending);
38
39 return ret;
40 }
41
pull(void * data,RK_S32 size)42 RK_S32 MppQueue::pull(void *data, RK_S32 size)
43 {
44 if (!mFlushFlag)
45 sem_wait(&mQueuePending);
46 {
47 AutoMutex autoLock(mpp_list::mutex());
48 if (!mpp_list::list_size())
49 return MPP_NOK;
50
51 return mpp_list::del_at_head(data, size);
52 }
53 return MPP_ERR_INIT;
54 }
55
flush()56 RK_S32 MppQueue::flush()
57 {
58 if (mFlushFlag)
59 return 0;
60
61 mFlushFlag = 1;
62 sem_post(&mQueuePending);
63 return mpp_list::flush();
64 }
65