1、功能说明
YUV文件拼接，可以设置两个YUV文件的帧数，将两个YUV文件的三个分量顺序拼接，只支持YUV420P采样格式。
2、增加功能
Modified: 2018-09-20 Soaringlee
- 输入YUV文件长度检查，需要拼接的文件长度不能超过YUV本身长度；
- 可以设置两幅YUV分别重复的次数。
3、功能实现(C语言)
#include "stdio.h"
#include "stdlib.h"
#include "string.h"
int main(int argc, char** argv)
{
unsigned char* y;
FILE* fp_yuv1, *fp_yuv2, *fp_yuv3;
int width, height, len1, len2, picturesize;
int i, yuv_len1, yuv_len2, dup1, dup2, total_frm_num1, total_frm_num2, dup1_b, dup2_b;
if (argc < 10)
{
printf("Usage: connectYUV.exe src2file src2file dstfile width height len1 len2 dup1 dup2\n\n");
printf("Notice: the width and height of those two yuv must be same!!!\n");
printf("Notice: dup1 is the number of replication for srcfile1, and dup2 is the number of replicaiton for srcfile2.\n");
return -1;
}
for(i=0; i<argc;i++)
{
printf("%s ", argv[i]);
}
printf("\n");
fp_yuv1 = fopen(argv[1], "rb");
if (NULL == fp_yuv1)
{
printf("ERROR: open %s fail!\n", argv[1]);
return -1;
}
fp_yuv2 = fopen(argv[2], "rb");
if (NULL == fp_yuv2)
{
printf("ERROR: open %s fail!\n", argv[2]);
return -1;
}
fp_yuv3 = fopen(argv[3], "wb");
if (NULL == fp_yuv3)
{
printf("ERROR: open %s fail!\n", argv[3]);
return -1;
}
width = atoi(argv[4]);
height = atoi(argv[5]);
len1 = atoi(argv[6]);
len2 = atoi(argv[7]);
dup1 = atoi(argv[8]);
dup2 = atoi(argv[9]);
picturesize = width *height * 3 / 2; //++YUV420
// yuv输入长度检查
fseek(fp_yuv1, 0, SEEK_END);
yuv_len1 = ftell(fp_yuv1);
total_frm_num1 = yuv_len1 / picturesize;
printf("total_frame_num1: %d\n", total_frm_num1);
fseek(fp_yuv1, 0, SEEK_SET);
fseek(fp_yuv2, 0, SEEK_END);
yuv_len2 = ftell(fp_yuv2);
total_frm_num2 = yuv_len2 / picturesize;
printf("total_frame_num2: %d\n", total_frm_num2);
fseek(fp_yuv2, 0, SEEK_SET);
if( len1 > total_frm_num1 || len2 > total_frm_num2)
{
printf("ERROR: len1 > frame_num1 or len2 > frame_num2!\n");
return -1;
}
y = (unsigned char*)malloc(picturesize*sizeof(unsigned char*));
if (NULL == y)
{
printf("ERROR: malloc y fail!\n");
}
do{
for (i = 0; i < len1; i++)
{
if (fread(y, 1, picturesize, fp_yuv1) == picturesize)
{
fwrite(y, 1, picturesize, fp_yuv3);
}
}
fseek(fp_yuv1, 0, SEEK_SET);// 特别注意，每次读取之后需要重置读指针位置。
dup1--;
} while(dup1);
do{
for (i = 0; i < len2; i++)
{
if (fread(y, 1, picturesize, fp_yuv2) == picturesize)
{
fwrite(y, 1, picturesize, fp_yuv3);
}
}
fseek(fp_yuv2, 0, SEEK_SET); // 特别注意，每次读取之后需要重置读指针位置。
dup2--;
} while(dup2);
printf("connect yuv %s and %s ==> %s successfully, total frames: %d\n", argv[1], argv[2], argv[3], len1*dup1_b+len2*dup2_b);
free(y);
y = NULL;
fclose(fp_yuv1);
fclose(fp_yuv2);
fclose(fp_yuv3);
return 0;
}
THE END!
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