test.c

yuv422->yuv420 非常好用

#include <stdio.h>
#include "stdlib.h"
//#include <string.h>
#include "convert.h"

//#define BUFF_SIZE 5120 //80x64
#define BUFF_SIZE 10752 //112x96

int main()
{
	FILE* in_fp;
	FILE* out_fp;
	unsigned char* in_buf;
	unsigned char* out_buf;
	Picture* src = NULL;
	Picture* des = NULL;

	in_buf = (unsigned char*)malloc(BUFF_SIZE*2);
//	out_buf = (unsigned char*)malloc(BUFF_SIZE*2);
	out_buf = (unsigned char*)malloc(BUFF_SIZE*3/2);

	src = (Picture*)malloc(sizeof(Picture));
	des = (Picture*)malloc(sizeof(Picture));

	in_fp = fopen("lab_112x96_422.yuv","rb");
	out_fp = fopen("lab_112x96_420.yuv","wb");
	if(in_fp==NULL || out_fp==NULL)
		return -1;

	init_src(src);
	init_des(des);

	while(!feof(in_fp))
	{
		fread(in_buf,1,BUFF_SIZE*2,in_fp);
		input_to_plane(in_buf, src);
		yuv422_to_yuv420(des, src, HEIGHT, WIDTH);
        plane_to_output(out_buf, des);
//		plane_to_output_o(out_buf, src);


		fwrite(out_buf,1,BUFF_SIZE*3/2,out_fp);
//		fwrite(out_buf,1,BUFF_SIZE*2,out_fp);
		
	}
	free(in_buf);
	free(out_buf);
    free(src);
	free(des);
	fclose(in_fp);
	fclose(out_fp);
	return 0;
}