拼接两个yuv合帧

http://blog.csdn.net/huahuahailang/article/details/9040847

/************************************************* 
* 主要功能：两路 YUV4:2:0拼接一路左右半宽格式YUV视频 
参考资料：http://www.pudn.com/downloads271/sourcecode/multimedia/vfw/detail1237363.html 
U_size=V_size=Y_size/2 
*************************************************/  
#include<stdio.h>  
#include<stdlib.h>  
#include<string.h>  
#define PREWEIGHT 1920  
#define PREHEIGHT 1080  
#define RESWEIGHT 3840  
#define RESHEIGHT 1080  
#define PREYSIZE ((PREWEIGHT)*(PREHEIGHT))  
#define PREUSIZE ((PREWEIGHT/2)*(PREHEIGHT/2))  
#define PREVSIZE ((PREWEIGHT/2)*(PREHEIGHT/2))  
#define RESYSIZE ((RESWEIGHT)*(RESHEIGHT))  
#define RESUSIZE ((RESWEIGHT/2)*(RESHEIGHT/2))  
#define RESVSIZE ((RESWEIGHT/2)*(RESHEIGHT/2))  
#define PRESIZE ((PREYSIZE)+(PREUSIZE)+(PREVSIZE))  
#define RESSIZE ((RESYSIZE)+(RESUSIZE)+(RESVSIZE))  
  
int GetFrameNum(const char *File)  
{  
    FILE *fp;  
    int size=0;  
    if (!(fp=fopen(File,"rb")))  
    {  
        printf("Open %s error !",File);  
        exit(1);  
    }   
    else  
    {  
        fseek(fp,0,SEEK_END);/*将文件指针移到YUV文件的末尾*/    
        size=ftell(fp);/*计算文件的总大小*/  
    }  
    return (size/PRESIZE);  
}  
void ReadYUV(char *ResBuf,char *PreBuf,int resstart,int prestart,int resoffset,int preoffset,int size,int height)  
{  
    int k;  
    for (k=0;k<height;k++)  
    {  
        memmove(ResBuf+resstart+k*(resoffset),PreBuf+prestart+k*(preoffset),size);//注意这里用memmov不用strncpy  
    }  
}  
int main(int argc,char *argv[])  
{  
    const char *FileName[]={"e:BMX_L_1920x1080_240frms.yuv","e:BMX_R_1920x1080_240frms.yuv"};/*两路YUV文件名*/  
    FILE *FileResult;/*输出文件名*/  
    FILE** fp_combine=(FILE**)malloc(sizeof(FILE *)*3);/*申请文件指针*/  
    int *FileFrameNum=(int *)malloc(sizeof(int)*3);/*每个YUV的帧数*/  
    char *PreBuf=(char *)malloc(sizeof(char)*(PRESIZE+1));/*处理前每一帧图像的大小*/  
    char *ResBuf=(char*)malloc(sizeof(char)*(RESSIZE+1));/*处理后每一帧图像的大小*/  
    int Y_start_section=0;/*预处理图片Y分量存入目标区域的起始区域*/  
    int U_start_section = 0;/*预处理图片U分量存入目标区域的起始区域*/  
    int V_start_section = 0;/*预处理图片V分量存入目标区域的起始区域*/  
    int File_offset = 0;/*预处理文件偏移值*/      
    int i_combine=0,j_combine=0,k_combine=0;/*控制循环*/  
    /*判断申请内存是否成功*/  
    if (!((fp_combine)&&(FileFrameNum)&&(PreBuf)&&(ResBuf)))  
    {  
        printf("Allocate memeroy Faile !");  
        exit(1);  
    }   
    /*初始化申请空间*/  
    memset(fp_combine,0,sizeof(FILE *)*2);  
    memset(FileFrameNum,0,sizeof(int)*2);  
    memset(PreBuf,0,sizeof(char)*PRESIZE);  
    memset(ResBuf,0,sizeof(char)*RESSIZE);  
    if (!(FileResult=fopen("hua_result.YUV","wb")))/*创建输出文件*/  
    {  
        printf("Creat File faile !");  
        exit(1);  
    }   
    for (i_combine=0;i_combine<2;i_combine++)  
    {  
        if(!(fp_combine[i_combine]=fopen(FileName[i_combine],"rb")))/*打开输入文件*/  
        {  
            printf("Open File %s Faile !",FileName[i_combine]);  
            exit(1);  
        }  
        else  
        {  
            FileFrameNum[i_combine]=GetFrameNum(FileName[i_combine]);/*存储每一个视频的帧数*/  
        }  
    }  
    i_combine=0;  
    k_combine=FileFrameNum[i_combine];  
    while (i_combine<k_combine)  
    {  
        File_offset = i_combine*PRESIZE;  
        j_combine=0;  
        while (j_combine<2)  
        {  
            fseek(fp_combine[j_combine],File_offset,SEEK_SET);/*移动文件指针至需要处理的数据的位置*/  
            fread(PreBuf,1,PRESIZE,fp_combine[j_combine]);/*读取一幅图像*/  
            if (j_combine==0)  
            {  
                /*把读取预处理图片Y/U/V分量的起始位置放置目标对应位置*/  
                Y_start_section=0;  
                U_start_section=RESYSIZE;  
                V_start_section=RESYSIZE+RESUSIZE;  
            }   
            else  
            {  
                /*把读取预处理图片Y/U/V分量的起始位置放置目标对应位置*/  
                Y_start_section=PREWEIGHT;  
                U_start_section=RESYSIZE+PREWEIGHT/2;  
                V_start_section=RESYSIZE+RESUSIZE+PREWEIGHT/2;  
            }  
            /*分别读Y、U、V*/  
            ReadYUV(ResBuf,PreBuf,Y_start_section,0,                 RESWEIGHT,PREWEIGHT,PREWEIGHT,PREHEIGHT);  
            ReadYUV(ResBuf,PreBuf,U_start_section,PREYSIZE,          RESWEIGHT/2,PREWEIGHT/2,PREWEIGHT/2,PREHEIGHT/2);  
            ReadYUV(ResBuf,PreBuf,V_start_section,PREYSIZE+PREUSIZE, RESWEIGHT/2,PREWEIGHT/2,PREWEIGHT/2,PREHEIGHT/2);  
            j_combine++;  
        }  
        fwrite(ResBuf,1,RESSIZE,FileResult);  
        fflush(FileResult);  
        i_combine++;  
    }  
    fclose(fp_combine[0]);  
    fclose(fp_combine[1]);  
    fclose(FileResult);  
    return 0;  
}