房产网站怎么做才能吸引人,dz论坛网站需要,别墅装修一般多少钱一套,对网站建设的要求首先在java层定义一个buffer,并且开辟相应的内存空间
private ByteBuffer byteBuffer;
byteBuffer ByteBuffer.allocateDirect(bytesPerFrame * framesPerBuffer );
然后调用本地的方法来设置内存地址到native层#xff0c;该方法在jni初始化时就已经被动态的注册了方法,注…首先在java层定义一个buffer,并且开辟相应的内存空间
private ByteBuffer byteBuffer;
byteBuffer ByteBuffer.allocateDirect(bytesPerFrame * framesPerBuffer );
然后调用本地的方法来设置内存地址到native层该方法在jni初始化时就已经被动态的注册了方法,注册的时候直接调用了底层的c代码并且通过java底层操作获取了buffer的内存地址保存到了native c中
nativeCacheDirectBufferAddress(byteBuffer, nativeAudioRecord);
{ALOGD(ctor%s, GetThreadInfo().c_str());// RTC_DCHECK(audio_parameters_.is_valid());// RTC_CHECK(j_environment_);JNINativeMethod native_methods[] {{nativeCacheDirectBufferAddress, (Ljava/nio/ByteBuffer;J)V,reinterpret_castvoid*(webrtc::AudioRecordJni::CacheDirectBufferAddress)},{nativeDataIsRecorded, (IJ)V,reinterpret_castvoid*(webrtc::AudioRecordJni::DataIsRecorded)}};j_native_registration_ j_environment_-RegisterNatives(com/ifreetalk/ftalk/module/audio/engine/AudioRecord,native_methods, arraysize(native_methods));j_audio_record_.reset(new JavaAudioRecord(j_native_registration_.get(),j_native_registration_-NewObject(init, (Landroid/content/Context;J)V,JVM::GetInstance()-context(), PointerTojlong(this))));// Detach from this thread since we want to use the checker to verify calls// from the Java based audio thread.thread_checker_java_.DetachFromThread();
}
void JNICALL AudioRecordJni::CacheDirectBufferAddress(JNIEnv* env, jobject obj, jobject byte_buffer, jlong nativeAudioRecord) {webrtc::AudioRecordJni* this_object reinterpret_castwebrtc::AudioRecordJni* (nativeAudioRecord);this_object-OnCacheDirectBufferAddress(env, byte_buffer);
}void AudioRecordJni::OnCacheDirectBufferAddress(JNIEnv* env, jobject byte_buffer) {//ALOGD(OnCacheDirectBufferAddress);//RTC_DCHECK(thread_checker_.CalledOnValidThread());//RTC_DCHECK(!direct_buffer_address_);direct_buffer_address_ //内存地址映射env-GetDirectBufferAddress(byte_buffer);jlong capacity env-GetDirectBufferCapacity(byte_buffer);//计算内存大小
// ALOGD(direct buffer capacity: %lld, capacity);direct_buffer_capacity_in_bytes_ static_castsize_t(capacity);//960
}void JNICALL AudioRecordJni::DataIsRecorded(JNIEnv* env, jobject obj, jint length, jlong nativeAudioRecord) {webrtc::AudioRecordJni* this_object reinterpret_castwebrtc::AudioRecordJni* (nativeAudioRecord);this_object-OnDataIsRecorded(length);
}
