Cam_FrameCatch.c
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>
#include "JZsdkLib.h"
#include "BaseConfig.h"
#include "../V4L2_camera/V4L2_Record.h"
#include "../V4L2_camera/V4L2_CameraParameterSetting.h"
#include "../../MultProc/MultProc.h"
#include "../../MediaParm.h"
#include "../../VideoMgmt/VideoMgmt.h"
#include "../Camera.h"
static int CameraFd = 0;
//多线程抓取数据线程
static void *JZsdk_Catch_MultiThread(void *args)
{
while (1)
{
unsigned int buf_size = 0;
unsigned char *buf = NULL;
//从相机中读取一张照片
V4L2_CameraFrameRecord_OnlyGetFrame(&buf, &buf_size);
//printf("read: len:%d data[3]:%x data[4]:%x\n", buf_size, buf[3], buf[4]);
if (buf == NULL)
{
JZSDK_LOG_ERROR("相机数据读取失败");
continue;
}
//放入缓冲池 //将数据放入缓冲池，从而被其他线程使用
VideoMgmt_write_data(&VideoMgmt_FirstVideo_index, buf, buf_size);
//归还图片
V4L2_CameraFrameRecord_OnlyReturnFrame();
}
}
//单线程抓取数据线程
static void *JZsdk_Catch_SingleThread(void *args)
{
while (1)
{
unsigned int buf_size = 0;
unsigned char *buf = NULL;
//从相机中读取一张照片
V4L2_CameraFrameRecord_OnlyGetFrame(&buf, &buf_size);
//printf("read: len:%d data[3]:%x data[4]:%x\n", buf_size, buf[3], buf[4]);
if (buf == NULL)
{
JZSDK_LOG_ERROR("相机数据读取失败");
continue;
}
//进行数据处理
VideoMgmt_Single_FrameIn(buf, buf_size);
//归还图片
V4L2_CameraFrameRecord_OnlyReturnFrame();
}
}
/******************************
*
* 相机抓取初始化
* ThreadMode: 0为单线程 1为多线程
*
* ******************************/
T_JZsdkReturnCode JZsdk_FrameCatch_Init(int ThreadMode)
{
T_JZsdkReturnCode ret;
//初始化数据接收线程
pthread_t ReadDataTask;
pthread_attr_t task_attribute; //线程属性
pthread_attr_init(&task_attribute); //初始化线程属性
pthread_attr_setdetachstate(&task_attribute, PTHREAD_CREATE_DETACHED); //设置线程分离属性
if (ThreadMode == 0)
{
int opus_Protection = pthread_create(&ReadDataTask,&task_attribute,JZsdk_Catch_SingleThread,NULL); //线程
if(opus_Protection != 0)
{
JZSDK_LOG_ERROR("创建相机抓取并处理初始化线程失败！");
return JZ_ERROR_SYSTEM_MODULE_CODE_FAILURE;
}
}
else if (ThreadMode == 1)
{
int opus_Protection = pthread_create(&ReadDataTask,&task_attribute,JZsdk_Catch_MultiThread,NULL); //线程
if(opus_Protection != 0)
{
JZSDK_LOG_ERROR("创建相机抓取并处理初始化线程失败！");
return JZ_ERROR_SYSTEM_MODULE_CODE_FAILURE;
}
}
return JZ_ERROR_SYSTEM_MODULE_CODE_SUCCESS;
}