#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include?“camera.h“


struct?v4l2_buffer?buf;
VideoBuffer?*buffers;

Mybuffer?mybuffer;

//初始化mybuffer;

void?init_mybuffer（）
{
	pthread_rwlock_init（&（mybuffer.rwlock）NULL）;
	mybuffer.date?=?（unsigned?char?*）calloc（1（buffers[0].length）*sizeof（unsigned?char））;
	mybuffer.len?=?buffers[0].length;
}

//釋放mybuffer
void?free_mybuffer（）
{
	pthread_rwlock_destroy（&（mybuffer.rwlock））;
	free（mybuffer.date）;
}

//打開設(shè)備
int?myopen（const?char?*pathint?type）
{
	int?fd;
	if（（fd?=?open（pathtype））<0）
	{
		fprintf（stderr“open?err:%s\n“strerror（errno））;
		exit（1）;
	}
	return?fd;
}

//查看設(shè)備的功能
void?out_capability（int?fd）
{
	struct?v4l2_capability?capa;
	capa_info?info;
	memset（&info0sizeof（capa_info））;
	memset（&capa0sizeof（struct?v4l2_capability））;
	if（ioctl（fdVIDIOC_QUERYCAP&capa）<0）
	{
		fprintf（stderr“out?capability:%s\n“strerror（errno））;
		exit（1）;
	}
	strcpy（info.drivercapa.driver）;
	strcpy（info.cardcapa.card）;
	strcpy（info.bus_infocapa.bus_info）;
	info.version?=?（unsigned?int）capa.version;

	printf（“dirver:?%s\n“info.driver）;
	printf（“card:?%s\n“info.card）;
	printf（“bus_info:?%s\n“info.bus_info）;
	printf（“version:?%d\n“info.version）;
}

//設(shè)置幀的格式
void?set_format（int?fd）
{
	struct	v4l2_format?fmt;
	memset（&fmt0sizeof（struct?v4l2_format））;
	fmt.type?=?V4L2_BUF_TYPE_VIDEO_CAPTURE;
	fmt.fmt.pix.field?=?V4L2_FIELD_ANY;
	fmt.fmt.pix.width?=?WIDTH;
	fmt.fmt.pix.height?=?HEIGHT;
	fmt.fmt.pix.pixelformat?=?MJPEG;
	if（ioctl（fdVIDIOC_S_FMT&fmt）<0）
	{
		fprintf（stderr“set?format?error:%s\n“strerror（errno））;
		exit（1）;
	}
}

//設(shè)置流類型相關(guān)參數(shù)
void?set_parm（int?fd）
{
	struct?v4l2_streamparm?parm;
	memset（&parm0sizeof（struct?v4l2_streamparm））;
	parm.type?=?V4L2_BUF_TYPE_VIDEO_CAPTURE;
	parm.parm.capture.timeperframe.numerator?=?1;
	parm.parm.capture.timeperframe.denominator?=?FPS;
	if（ioctl（fdVIDIOC_S_PARM&parm）<0）
	{
		fprintf（stderr“set?streamparm?error:%s\n“strerror（errno））;
		exit（1）;
	}
}

//獲取并向驅(qū)動(dòng)申請(qǐng)幀緩沖
void?query_Buffer（int?fd）
{
	struct?v4l2_requestbuffers?req;
	memset（&req0sizeof（struct?v4l2_requestbuffers））;
	//分配內(nèi)存
	req.count?=?NB_BUFFER;
	req.type?=?V4L2_BUF_TYPE_VIDEO_CAPTURE;
	req.memory?=?V4L2_MEMORY_MMAP;
	if（ioctl（fdVIDIOC_REQBUFS&req）<0）
	{
		fprintf（stderr“reqbufs?error:%s\n“strerror（errno））;
		exit（1）;
	}
	
	buffers?=?（VideoBuffer?*）calloc（req.count
			sizeof（VideoBuffer））;?
	int?numBufs;
	
	for（numBufs?=?0;numBufs	{
		memset（&buf0sizeof（struct?v4l2_buffer））;
		buf.type?=?V4L2_BUF_TYPE_VIDEO_CAPTURE;
		buf.index?=?numBufs;
		buf.memory?=?V4L2_MEMORY_MMAP;
		//讀取緩存
	????if（ioctl（fdVIDIOC_QUERYBUF&buf）<0）
		{
			fprintf（stderr“querybuf:%s\n“strerror（errno））;
			exit（1）;
		}
		buffers[numBufs].length?=?buf.length;
	//	printf（“buffers[0].length:%d\n“buffers[numBufs].length）;
		//轉(zhuǎn)換成相對(duì)地

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件??????20099??2007-03-13?15:07??net_camera\bin\camera

?????文件??????12039??2007-03-13?14:09??net_camera\bin\test

?????文件????????870??2007-03-13?15:07??net_camera\include\camera.h

?????文件???????5701??2007-01-21?01:40??net_camera\include\huffman.h

?????文件????????318??2007-01-21?01:40??net_camera\include\print.h

?????文件???????5632??2007-03-13?15:07??net_camera\src\camera.c

?????文件???????1237??2007-01-21?01:40??net_camera\src\print.c

?????文件???????2593??2007-03-13?09:09??net_camera\src\server.c

?????文件????????458??2007-03-13?09:32??net_camera\src\test.c

?????文件???????4837??2007-03-13?14:37??net_camera\src\th_server.c

?????文件???????5589??2007-03-13?13:03??net_camera\test.jpeg

?????目錄??????????0??2011-03-22?16:16??net_camera\bin

?????目錄??????????0??2011-03-22?16:16??net_camera\include

?????目錄??????????0??2011-03-22?16:16??net_camera\src

?????目錄??????????0??2011-03-22?16:16??net_camera

-----------?---------??----------?-----??----

????????????????59373????????????????????15