Android 摄像头 yuv420sp 格式转 yuv420

android 摄像头采集到的图像格式是yuv420sp,原来以为这个格式与yuv420（即I420）是同一个格式，经过测试后发现他们是属于2种不同的图像格式。

 

01	private static void YUV420SP2YUV420(byte[] yuv420sp, byte[] yuv420, int width, int height)

02

{

03	if (yuv420sp == null ||yuv420 == null)

04

return;

05	int framesize = width*height;

06	int i = 0, j = 0;

07

//copy y

08	for (i = 0; i < framesize; i++)

09

{

10	yuv420[i] = yuv420sp[i];

11

}

12

i = 0;

13	for (j = 0; j < framesize/2; j+=2)

14

{

15	yuv420[i + framesize*5/4] = yuv420sp[j+framesize];

16

i++;

17

}

18

i = 0;

19	for(j = 1; j < framesize/2;j+=2)

20

{

21	yuv420[i+framesize] = yuv420sp[j+framesize];

22

i++;

23

}

24

}