H.264远程视频监控实验报告.docx

郑州轻工业学院实验报告H.264远程视频监控实验 专业班级：嵌入式软件专业11-02班姓名：学号：541113430联系方式：H.264远程视频监控实验报告一项目准备：1. 硬件准备：mini2440开发板一套；USB摄像头一套。2. 软件准备：移植Linux2.6.29内核，使其可运行于mini2440开发板；开发USB host controller驱动。二项目需求：1. 产品构架图：2. 产品功能演示：三系统设计：1. 项目设计根据项目需求分析，该项目主要涉及3部分的软件开发工作：1. USB摄像头驱动移植；2. H.264编码库移植；3. 视频采集传输应用程序开发。2. 视频采集应用程序流程图四项目开发：1. USB摄像头驱动程序移植内核里自带摄像头驱动，手动即可：1. 创建项目目录#mkdir/home/project/h246#cd/home/project/h2462. 通过SMB服务将SDK-H264/server目录拷贝到项目目录下3. 解压内核到当前目录#cd/home/project/h264/server/kernel#tar zxvf Linux.2.6.29.tar.gz4. 清理中间文件、配置文件#cd Linux-2.6.29#make distclean5. 选择参考配置文件#cp config-h264.config6. 配置内核.1内核的配置#make menuconfig ARCH=armCROSS_COMPILE=arm-Linux-.2要使内核支持USB摄像头驱动，内核必须选上如下的配置选项：Device drivers-multimedia devices-选择 【*】video capture adaptersDevice drivers-multimedia devices-Video capture adapters-V4L USB device-选择 USB Ov511 Camera Support.3退出、保存7. 编译内核#make ulmage ARCH=armCROSS_COMPILE=arm-linux-8. 将ulmage拷贝到tftp服务项目/tftpbot#cp arch/arm/boot/ulmage/tftpboot/ulmage-h2642. H.264编码库移植步骤：#cd /home/project/h264/server/h264#cd avc-src-0.14/avc/build/linux#make#rm rf avc-src-0.14/avc/build/obj/T264.O3. 传输程序开发传输应用程序位于SDK-H264/server/app中。步骤如下：#cd/home/project/h264/server/h264#cd app#vim sever_arm.c#make五项目测试：.1拷贝server_arm和fastspeed.txt到根文件系统.2在pc机和mini2440开发板之间连接好电源、串口、网线.3采用NFS方式起根文件系统.4连接USB摄像头.5运行视频采集应用程序六项目代码：/* 服务端程序 server.c */ /WB#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include convert.h#include ./avc-src-0.14/avc/common/T264.h#define SERVER_PORT 8888 T264_t* m_t264;T264_param_t m_param;char* m_pSrc;char* m_pDst;int* m_lDstSize;char* m_pPoolData;#define USB_VIDEO /dev/video0int cam_fd;struct video_mmap cam_mm;/*视频内存映射*/*包含摄像头的基本信息，例如设备名称、支持的最大最小分辨率、信号源信息等*/struct video_capability cam_cap;/*亮度、对比度等和voide_mmap中的分辨率*/struct video_picture cam_pic;struct video_mbuf cam_mbuf;/*摄像头存储缓冲区的帧信息*/struct video_window win;/* 设备采集窗口参数*/char *cam_data = NULL;int nframe;void read_video(char *pixels,int w, int h) int ret; int frame=0; cam_mm.width = w; cam_mm.height = h; /* 对于单帧采集只需设置 frame=0*/ cam_mm.frame = 0; cam_mm.format=VIDEO_PALETTE_YUV420P; /change by 091215/* 若调用成功，则激活设备真正开始一帧图像的截取，是非阻塞的*/ ret = ioctl(cam_fd,VIDIOCMCAPTURE,&cam_mm); if( ret0 ) printf(ERROR: VIDIOCMCAPTUREn); /* 函数判断该帧图像是否截取完毕，成功返回表示截取完毕*/ ret = ioctl(cam_fd,VIDIOCSYNC,&frame); if( ret0 ) printf(ERROR: VIDIOCSYNCn); void config_vid_pic() char cfpath100; FILE *cf; int ret; if (ioctl(cam_fd, VIDIOCGPICT, &cam_pic) 0) printf(ERROR:VIDIOCGPICTn); /*图像采集格式,网眼V2000只支持VIDEO_PALETTE_YUV420P*/ cam_pic.palette = VIDEO_PALETTE_YUV420P; /change by 091215#if 0 cam_pic.brightness = 30464; cam_pic.hue = 36000; cam_pic.colour = 0; cam_pic.contrast = 43312; cam_pic.whiteness = 10312; cam_pic.depth = 24;#endif cam_pic.brightness =30464; cam_pic.hue =111; cam_pic.colour =555; cam_pic.contrast =43312; cam_pic.whiteness =111; /*VIDEO_PALETTE_YUV420,bpp=12bit*/ cam_pic.depth = 12; /bpp = bytes per pixel,change by 091215 /*设置摄像头缓冲中voideo_picture信息*/ ret = ioctl( cam_fd, VIDIOCSPICT,&cam_pic ); if( ret0 ) close(cam_fd); printf(ERROR: VIDIOCSPICT,Cant set video_picture formatn); return;void init_video(int w,int h) /* bpp = bytes per pixel*/ int ret; /*设备的打开*/ cam_fd = open( USB_VIDEO, O_RDWR ); if( cam_fd0 ) printf(Cant open video devicen);/* 使用IOCTL命令VIDIOCGCAP，获取摄像头的基本信息，如最大，最小分辨率*/ ret = ioctl( cam_fd,VIDIOCGCAP,&cam_cap ); /* 摄像头的基本信息*/ if( ret0 ) printf(Cant get device information: VIDIOCGCAPn); printf(Device name:%snWidth:%d %dnHeight:%d %dn,cam_, cam_cap.maxwidth, cam_cap.minwidth, cam_cap.maxheight, cam_cap.minheight); if( ioctl(cam_fd,VIDIOCGWIN,&win)0 ) printf(ERROR:VIDIOCGWINn); win.x = 0; /windows中的原点坐标 win.y = 0; /windows中的原点坐标 win.width=w; /capture area 宽度 win.height=h; /capture area 高度 /*使用IOCTL命令VIDIOCSWIN，设置摄像头的基本信息*/ if (ioctl(cam_fd, VIDIOCSWIN, &win) 0) printf(ERROR:VIDIOCSWINn); /*设置摄像头voideo_picture信息*/ config_vid_pic(); /*使用IOCTL命令VIDIOCGCAP，获取获得摄像头存储缓冲区的帧信息*/ ret = ioctl(cam_fd,VIDIOCGMBUF,&cam_mbuf); if( retwidth);fgets(line, 254, fd); sscanf(line,%d, ¶m-height);fgets(line, 254, fd); sscanf(line,%d, ¶m-search_x);fgets(line, 254, fd); sscanf(line,%d, ¶m-search_y);fgets(line, 254, fd); sscanf(line,%d, &total_no);fgets(line, 254, fd); sscanf(line,%d, ¶m-iframe);fgets(line, 254, fd); sscanf(line,%d, ¶m-idrframe);fgets(line, 254, fd); sscanf(line,%d, ¶m-b_num);fgets(line, 254, fd); sscanf(line,%d, ¶m-ref_num);fgets(line, 254, fd); sscanf(line,%d, ¶m-enable_rc);fgets(line, 254, fd); sscanf(line,%d, ¶m-bitrate);fgets(line, 254, fd); sscanf(line,%f, ¶m-framerate);fgets(line, 254, fd); sscanf(line,%d, ¶m-qp);fgets(line, 254, fd); sscanf(line,%d, ¶m-min_qp);fgets(line, 254, fd); sscanf(line,%d, ¶m-max_qp);fgets(line, 254, fd); sscanf(line,%d, ¶m-enable_stat);fgets(line, 254, fd); sscanf(line,%d, ¶m-disable_filter);fgets(line, 254, fd); sscanf(line,%d, ¶m-aspect_ratio);fgets(line, 254, fd); sscanf(line,%d, ¶m-video_format);fgets(line, 254, fd); sscanf(line,%d, ¶m-luma_coeff_cost);fgets(line, 254, fd); sscanf(line,%d, &b);param-flags |= (USE_INTRA16x16) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-flags |= (USE_INTRA4x4) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-flags |= (USE_INTRAININTER) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-flags |= (USE_HALFPEL) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-flags |= (USE_QUARTPEL) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-flags |= (USE_SUBBLOCK) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-flags |= (USE_FULLSEARCH) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-flags |= (USE_DIAMONDSEACH) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-flags |= (USE_FORCEBLOCKSIZE) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-flags |= (USE_FASTINTERPOLATE) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-flags |= (USE_SAD) * b;fgets(line, 254, fd); sscanf(line,%d, &b);param-flags |= (USE_EXTRASUBPELSEARCH) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-flags |= (USE_SCENEDETECT) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-block_size |= (SEARCH_16x16P) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-block_size |= (SEARCH_16x8P) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-block_size |= (SEARCH_8x16P) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-block_size |= (SEARCH_8x8P) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-block_size |= (SEARCH_8x4P) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-block_size |= (SEARCH_4x8P) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-block_size |= (SEARCH_4x4P) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-block_size |= (SEARCH_16x16B) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-block_size |= (SEARCH_16x8B) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-block_size |= (SEARCH_8x16B) * (!b);fgets(line, 254, fd); sscanf(line,%d, &b);param-block_size |= (SEARCH_8x8B) * (!b);fgets(line, 254, fd); sscanf(line,%d, ¶m-cpu);fgets(line, 254, fd); sscanf(line, %d, ¶m-cabac);/ fgets(line, 254, fd); sscanf(line,%s, src_path);/ fgets(line, 254, fd); sscanf(line,%s, out_path);/ fgets(line, 254, fd); sscanf(line,%s, rec_path);/ param-rec_name = rec_path;fclose(fd);void init_encoder()/编码准备const char* paramfile = fastspeed.txt;/*获取fastspeed.txt文件信息*/init_param(&m_param, paramfile);m_param.direct_flag = 1;/*t264编码的打开*/m_t264 = T264_open(&m_param);m_lDstSize = m_param.height * m_param.width + (m_param.height * m_param.width 1); /*分配t264解码后数据存放的内存*/m_pDst = (uint8_t*)T264_malloc(m_lDstSize, CACHE_SIZE);/*分配内存用于存放一帧数据长度的数据*/m_pPoolData = malloc(m_param.width*m_param.height*3/2); void udps_respon(int sockfd,int w,int h) struct sockaddr_in addrsrc;struct sockaddr_in addrdst; int addrlen,n; int32_t iActualLen;int row_stride = w*3*h/2;bzero(&addrdst,sizeof(struct sockaddr_in); addrdst.sin_family=AF_INET; /*客户端PC机IP地址*/addrdst.sin_addr.s_addr=inet_addr(6);addrdst.sin_port=htons(SERVER_PORT);while(1) /*数据的采集*/read_video(NULL,w,h);/*对采集到的数据通过H264编码*/iActualLen = T264_encode(m_t264, cam_data, m_pDst, row_stride);printf(encoded:%d, %d bytes.n,row_stride,iActualLen); /*frame_num：存放帧号*/memcpy(m_pPoolData,&m_t264-frame_num,1);/*m_pDst解码后的数据*/memcpy(m_pPoolData+1, m_pDst, iActualLen);iActualLen+;/*使用UDP协议发送编码后的数据到客服端*/sendto(so