//
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// Created by 倪路朋 on 4/13/25.
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//
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#include "live_view_call.h"
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#include "server_global.h"
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LiveViewCall::LiveViewCall(JNIEnv *env_, jobject instance_) {
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this->env = env_;
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this->env->GetJavaVM(&javaVM);
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this->instance = env->NewGlobalRef(instance_);
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jclass localClazz = env->FindClass("com/runt/live/cpp/LiveMiniView");
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if (localClazz == nullptr || env->ExceptionCheck()) {
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env->ExceptionDescribe();
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env->ExceptionClear();
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return;
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}
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// 拿一个 global ref：关键！！
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//jobject，jclass等对象在方法执行完后就会被回收
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miniClazz = (jclass)env->NewGlobalRef(localClazz);
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jmd_draw_text = env->GetStaticMethodID(miniClazz,"drawText","([BIII)[B");
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};
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LiveViewCall::~LiveViewCall() {
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javaVM = 0 ;
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env->DeleteGlobalRef(instance);
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env->DeleteGlobalRef(miniClazz);
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instance = 0 ;
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}
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uint8_t *LiveViewCall::drawText(int stream_code, uint8_t *yuvData[3],int width,int height) {
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//******转为rgba
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int size = width * height * 4;
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uint8_t *rgba_data = yuvToRGBA(yuvData,width,height);
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//转为java字节数组
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jint res = javaVM->AttachCurrentThread(&env, nullptr);
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jbyteArray java_array = env->NewByteArray(size);
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env->SetByteArrayRegion(java_array, 0, size, (jbyte *)rgba_data);
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delete[] rgba_data;
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jbyteArray rgbaArray = (jbyteArray)env->CallStaticObjectMethod(miniClazz, jmd_draw_text,java_array,stream_code,width,height);
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env->DeleteLocalRef(java_array);
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// 2. 分配 native buffer
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uint8_t* rgba_copy = new uint8_t[size];
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// 3. 拷贝数据
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env->GetByteArrayRegion(rgbaArray, 0, size, reinterpret_cast<jbyte*>(rgba_copy));
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env->DeleteLocalRef(rgbaArray);
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javaVM->DetachCurrentThread();
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return rgba_copy;
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}
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