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a284628487 / JniSample

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Camera #6

Open a284628487 opened 6 years ago

a284628487 commented 6 years ago

/Users/ccfyyn/Downloads/android-6.0.1_r72/developers/samples/android/media/Camera2Video /Users/ccfyyn/Downloads/android-6.0.1_r72/development/samples/B* /Users/ccfyyn/Downloads/android-6.0.1_r72/external/aac/documentation /Users/ccfyyn/Downloads/android-6.0.1_r72/hardware/libhardware/modules/camera /Users/ccfyyn/Downloads/android-6.0.1_r72/packages/apps/Camera

NDK: /Users/ccfyyn/Library/Android/sdk/ndk-bundle /Users/ccfyyn/Library/Android/sdk/ndk-bundle/platforms/android-24/arch-arm64/usr/include

javah com.jni.JniTeach 命令生成头文件, 该头文件引用了 jni.h, 以及定义好了对应的 Native 方法。 javap -s com.jni.JniTeach 命令生成Java文件中的方法签名。

jstring (NewString)(JNIEnv, const jchar, jsize);
jsize (GetStringLength)(JNIEnv, jstring);
const jchar (GetStringChars)(JNIEnv, jstring, jboolean);
void (ReleaseStringChars)(JNIEnv, jstring, const jchar);
jstring (NewStringUTF)(JNIEnv, const char);
jsize (GetStringUTFLength)(JNIEnv*, jstring);

a284628487 commented 6 years ago

https://www.jianshu.com/p/a2faaa0206de http://hukai.me/android-deeper-graphics-architecture/ https://github.com/ChouRay/PlayVideo-OpenGL https://github.com/loyinglin/LearnOpenGLES