android-ndk

问题 How can we record SIP to SIP call in android? how to get downlink and uplink access in android using native code? 回答1: Take a look on CSipSimple. It is an open source project that has the features you are looking for. Generally it uses a pjsip SIP stack that runs on native code. You can ask question in their mailing list. It is very active. 回答2: Assuming you wrote your own Android NDK SIP stack, recording SIP calls on Android is pretty simple. Just combine inbound and outbound audio (MUX),

问题 I'm trying to figure out how to return an int to Java from a C++ function. On the Java side, I have the following in a button. I put it in a button to ensure that the app was completely loaded before attempting to execute returnInt(). int testInt; testInt = returnInt(); Log.i(TAG, "testInt"); Log.i(TAG, String.valueOf(testInt)); And private native int returnInt(); On the C++ side, returning an int in an extern block succeeds: extern "C" JNIEXPORT jint Java_com_superpowered_crossexample

问题 I'm using the Visual C++ Cross Platform Tools for Android as described here: https://msdn.microsoft.com/en-us/library/dn707591.aspx Everything works fine so far (I can build and run on my phone the templates under File -> New Project -> Cross Platform -> Android). However, I can't find out how to link my app to a prebuilt shared library in the form of an *.so file . So far, I tried the following steps: Step 1 To test the ability of Visual Studio to link to a prebuilt shared library, I created

问题 I have a buffer of RGB (or RGBA) texture image, and I want to display it on my Android device with the following code. I use OpenGL from NDK. glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, 256, 256, 0, GL_RGBA, GL_UNSIGNED_BYTE, this->pBuffer); I have also set the PixelFormat from the Java side with: this.getHolder().setFormat(PixelFormat.RGBA_8888); this.setEGLConfigChooser(8, 8, 8, 8, 0, 0); setRenderer(new MyRenderer()); The image is displayed but there are four columns (identical and contains

问题 I am trying to build a project with NDK and cannot get rid of this error. I searched all over the google but a similiar error is only there for Xamarin. I am using Android Studio. The error is all about: FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':chessClass:externalNativeBuildDebug'. > Build command failed. Error while executing process C:\Users\Murat\AppData\Local\Android\sdk\ndk-bundle\ndk-build.cmd with arguments {NDK_PROJECT_PATH=null APP_BUILD

问题 I am using Android Studio 3.0 for my NDK based app. For the C++ code, I use CMake as the external builder. This works well, I can create debug and release binaries. However, I would like to turn on compiler optimizations (say -O3) for a part of the C++ code (the physics engine), not just for the release build, but also for the debug build. So create the bulk of the debug build as is, without optimizing, yet, I want one of the static library targets to be built with the compiler optimization

问题 I am using Android Studio 3.0 for my NDK based app. For the C++ code, I use CMake as the external builder. This works well, I can create debug and release binaries. However, I would like to turn on compiler optimizations (say -O3) for a part of the C++ code (the physics engine), not just for the release build, but also for the debug build. So create the bulk of the debug build as is, without optimizing, yet, I want one of the static library targets to be built with the compiler optimization

问题 I am facing the issue while I am adding the .so file in my project, from the other ans, I have tried with different solutions but not any solution help me out. case: 1 I had tried to put my .so in src/main/jniLibs and in the gradle file I had added below lines, but getting the same error. android { sourceSets.main.jni.srcDirs = [] } case:2 I had added cpp folder with native-lib.cpp and in gradle added below code: defaultConfig { ndk { abiFilters "armeabi", "armeabi-v7a", "x86", "mips" } }

问题 I am struck with an error, using the jni ... I have a simple native method in android activity class and created header for that and implemented the c file for that...unable to find the mistake pls help Here are the files that I have Activity static{ System.loadLibrary("fluidsynth"); } private native String textOverjni(); Header file /* DO NOT EDIT THIS FILE - it is machine generated */ #include <jni.h> /* Header for class com_example_fluidsynthtest_MyFluidSynthO */ #ifndef _Included_com

问题 I need to use a custom prebuilt shared library (built on standalone ndk as libdynamic.so) in my android project. I created a folder "jniLibs" in path src/main and then 4 folders inside that namely "armeabi" "armeabi-v7a" "x86" "x86_64". I have put the prebuilt library inside all these 4 folders. Now from my native code I want to call a function of this library. In the following way (included header in cmakelists.txt): extern "C" JNIEXPORT jstring JNICALL Java_demo_co_ru_jnilibtest