faip520 / androidframebufferscreenshot Goto Github PK

JNIEXPORT jstring JNICALL
Java_com_wfg_jni_XJni_getStr(JNIEnv *env, jobject thiz, jstring s) {
// TODO: implement getStr()
int fd, ret;
struct fb_fix_screeninfo finfo;
fd = open("/dev/graphics/fb0",O_RDONLY);
if (fd == -1){
return (*env)->NewStringUTF(env,"this is a c++ method");
}
ret = ioctl(fd,FBIOGET_FSCREENINFO,&finfo);
if (ret == -1){
LOGD("can not get screen info!");
close(fd);
return (*env)->NewStringUTF(env,"this is a c++ method");
}
LOGD("====type : %d",finfo.type);

报错打不开fb0 ， 大神给看看

Thanks a loot for giving so useful source to us.
I have a question about building this source.
In the jni folder, there is no Android.mk for NDK building.
I am first NDK, so I can't make file Android.mk.
I tried this, but it says that TurboJpeg.h couldn't find.
I want to modify test method of termExec.c because I want to get current framebuffer index displaying screen.
I apologize that I bother you and I'm happy to know this useful project.

I use ndk-build, but getted "fatal error: turbojpeg.h: No such file or directory"...

Thankyou!