Method and system for acquiring Android terminal camera data

Abstract

The invention discloses a method and a system for obtaining Android terminal camera data, and the method comprises the following steps: S1, carrying out the declaration of a native function which is afunctional function for calling the camera data; s2, loading a dynamic library for realizing the native function; s3, obtaining the operation authority of the camera; s4, calling the native functionat the required position; and S5, generating a local cpp file, and realizing a native function of obtaining the camera data by the bottom layer and carrying out corresponding service logic processing.According to the method, the real-time processing of the image data of the Android mobile phone camera is more efficient, and cross-platform can be realized.

Description

technical field [0001] The invention relates to the technical field of camera image data acquisition, in particular to a method and system for acquiring camera data of an Android terminal based on the bottom layer of an Android system. Background technique [0002] The Android operating system is a Linux-based operating system, mainly used in portable devices. The development of upper-layer applications in the Android system is generally completed based on Java. Java is platform-independent, so it is not easy to implement some low-level tasks in Java. For example, when it comes to local services, link libraries or hardware drivers, etc., it is usually necessary to run C to implement, and C programs run on native (native method) layer. The Java layer and the native layer can call each other through a JNI (Java Native Interface; Java, native interface) mechanism. In the Android system, more functions are provided in the form of Java layer APIs, and the native layer often ne...

AI Technical Summary

Problems solved by technology

[0006] The problem with the existing method is that the camera image data acquired by the Java layer needs to be transferred to the natice layer through the Jni call to process the call of the C / C++ code, so there are problems in both real-time and interactivity. There is a certain delay, and the response speed of the program processing results is slow, which will affect the experience in such as face unlocking, somatosensory games, etc.

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