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hardware_samsung/exynos/multimedia/openmax/osal/SEC_OSAL_Queue.c

175 lines
4.4 KiB

/*
*
* Copyright 2010 Samsung Electronics S.LSI Co. LTD
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* @file SEC_OSAL_Queue.c
* @brief
* @author SeungBeom Kim (sbcrux.kim@samsung.com)
* @version 1.1.0
* @history
* 2010.7.15 : Create
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "SEC_OSAL_Memory.h"
#include "SEC_OSAL_Mutex.h"
#include "SEC_OSAL_Queue.h"
OMX_ERRORTYPE SEC_OSAL_QueueCreate(SEC_QUEUE *queueHandle)
{
int i = 0;
SEC_QElem *newqelem = NULL;
SEC_QElem *currentqelem = NULL;
SEC_QUEUE *queue = (SEC_QUEUE *)queueHandle;
OMX_ERRORTYPE ret = OMX_ErrorNone;
if (!queue)
return OMX_ErrorBadParameter;
ret = SEC_OSAL_MutexCreate(&queue->qMutex);
if (ret != OMX_ErrorNone)
return ret;
queue->first = (SEC_QElem *)SEC_OSAL_Malloc(sizeof(SEC_QElem));
if (queue->first == NULL)
return OMX_ErrorInsufficientResources;
SEC_OSAL_Memset(queue->first, 0, sizeof(SEC_QElem));
currentqelem = queue->last = queue->first;
queue->numElem = 0;
for (i = 0; i < (MAX_QUEUE_ELEMENTS - 2); i++) {
newqelem = (SEC_QElem *)SEC_OSAL_Malloc(sizeof(SEC_QElem));
if (newqelem == NULL) {
while (queue->first != NULL) {
currentqelem = queue->first->qNext;
SEC_OSAL_Free((OMX_PTR)queue->first);
queue->first = currentqelem;
}
return OMX_ErrorInsufficientResources;
} else {
SEC_OSAL_Memset(newqelem, 0, sizeof(SEC_QElem));
currentqelem->qNext = newqelem;
currentqelem = newqelem;
}
}
currentqelem->qNext = queue->first;
return OMX_ErrorNone;
}
OMX_ERRORTYPE SEC_OSAL_QueueTerminate(SEC_QUEUE *queueHandle)
{
int i = 0;
SEC_QElem *currentqelem = NULL;
SEC_QUEUE *queue = (SEC_QUEUE *)queueHandle;
OMX_ERRORTYPE ret = OMX_ErrorNone;
if (!queue)
return OMX_ErrorBadParameter;
for ( i = 0; i < (MAX_QUEUE_ELEMENTS - 2); i++) {
currentqelem = queue->first->qNext;
SEC_OSAL_Free(queue->first);
queue->first = currentqelem;
}
if(queue->first) {
SEC_OSAL_Free(queue->first);
queue->first = NULL;
}
ret = SEC_OSAL_MutexTerminate(queue->qMutex);
return ret;
}
int SEC_OSAL_Queue(SEC_QUEUE *queueHandle, void *data)
{
SEC_QUEUE *queue = (SEC_QUEUE *)queueHandle;
if (queue == NULL)
return -1;
SEC_OSAL_MutexLock(queue->qMutex);
if ((queue->last->data != NULL) || (queue->numElem >= MAX_QUEUE_ELEMENTS)) {
SEC_OSAL_MutexUnlock(queue->qMutex);
return -1;
}
queue->last->data = data;
queue->last = queue->last->qNext;
queue->numElem++;
SEC_OSAL_MutexUnlock(queue->qMutex);
return 0;
}
void *SEC_OSAL_Dequeue(SEC_QUEUE *queueHandle)
{
void *data = NULL;
SEC_QUEUE *queue = (SEC_QUEUE *)queueHandle;
if (queue == NULL)
return NULL;
SEC_OSAL_MutexLock(queue->qMutex);
if ((queue->first->data == NULL) || (queue->numElem <= 0)) {
SEC_OSAL_MutexUnlock(queue->qMutex);
return NULL;
}
data = queue->first->data;
queue->first->data = NULL;
queue->first = queue->first->qNext;
queue->numElem--;
SEC_OSAL_MutexUnlock(queue->qMutex);
return data;
}
int SEC_OSAL_GetElemNum(SEC_QUEUE *queueHandle)
{
int ElemNum = 0;
SEC_QUEUE *queue = (SEC_QUEUE *)queueHandle;
if (queue == NULL)
return -1;
SEC_OSAL_MutexLock(queue->qMutex);
ElemNum = queue->numElem;
SEC_OSAL_MutexUnlock(queue->qMutex);
return ElemNum;
}
int SEC_OSAL_SetElemNum(SEC_QUEUE *queueHandle, int ElemNum)
{
SEC_QUEUE *queue = (SEC_QUEUE *)queueHandle;
if (queue == NULL)
return -1;
SEC_OSAL_MutexLock(queue->qMutex);
queue->numElem = ElemNum;
SEC_OSAL_MutexUnlock(queue->qMutex);
return ElemNum;
}