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/*
* Copyright (C) 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "BLASTBufferQueue"
#include <nativehelper/JNIHelp.h>
#include <android_runtime/AndroidRuntime.h>
#include <android_runtime/android_view_Surface.h>
#include <utils/Log.h>
#include <utils/RefBase.h>
#include <gui/BLASTBufferQueue.h>
#include <gui/Surface.h>
#include <gui/SurfaceComposerClient.h>
#include "core_jni_helpers.h"
namespace android {
struct {
jmethodID onTransactionComplete;
} gTransactionCompleteCallback;
class TransactionCompleteCallbackWrapper : public LightRefBase<TransactionCompleteCallbackWrapper> {
public:
explicit TransactionCompleteCallbackWrapper(JNIEnv* env, jobject jobject) {
env->GetJavaVM(&mVm);
mTransactionCompleteObject = env->NewGlobalRef(jobject);
LOG_ALWAYS_FATAL_IF(!mTransactionCompleteObject, "Failed to make global ref");
}
~TransactionCompleteCallbackWrapper() {
if (mTransactionCompleteObject) {
getenv()->DeleteGlobalRef(mTransactionCompleteObject);
mTransactionCompleteObject = nullptr;
}
}
void onTransactionComplete(int64_t frameNr) {
if (mTransactionCompleteObject) {
getenv()->CallVoidMethod(mTransactionCompleteObject,
gTransactionCompleteCallback.onTransactionComplete, frameNr);
}
}
private:
JavaVM* mVm;
jobject mTransactionCompleteObject;
JNIEnv* getenv() {
JNIEnv* env;
mVm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6);
return env;
}
};
static jlong nativeCreate(JNIEnv* env, jclass clazz, jstring jName) {
ScopedUtfChars name(env, jName);
sp<BLASTBufferQueue> queue = new BLASTBufferQueue(name.c_str());
queue->incStrong((void*)nativeCreate);
return reinterpret_cast<jlong>(queue.get());
}
static jlong nativeCreateAndUpdate(JNIEnv* env, jclass clazz, jstring jName, jlong surfaceControl,
jlong width, jlong height, jint format) {
ScopedUtfChars name(env, jName);
sp<BLASTBufferQueue> queue =
new BLASTBufferQueue(name.c_str(), reinterpret_cast<SurfaceControl*>(surfaceControl),
width, height, format);
queue->incStrong((void*)nativeCreate);
return reinterpret_cast<jlong>(queue.get());
}
static void nativeDestroy(JNIEnv* env, jclass clazz, jlong ptr) {
sp<BLASTBufferQueue> queue = reinterpret_cast<BLASTBufferQueue*>(ptr);
queue->decStrong((void*)nativeCreate);
}
static jobject nativeGetSurface(JNIEnv* env, jclass clazz, jlong ptr,
jboolean includeSurfaceControlHandle) {
sp<BLASTBufferQueue> queue = reinterpret_cast<BLASTBufferQueue*>(ptr);
return android_view_Surface_createFromSurface(env,
queue->getSurface(includeSurfaceControlHandle));
}
static void nativeSetUndequeuedBufferCount(JNIEnv* env, jclass clazz, jlong ptr, jint count) {
sp<BLASTBufferQueue> queue = reinterpret_cast<BLASTBufferQueue*>(ptr);
if (queue == nullptr) return;
queue->setUndequeuedBufferCount(count);
}
static jint nativeGetUndequeuedBufferCount(JNIEnv* env, jclass clazz, jlong ptr) {
sp<BLASTBufferQueue> queue = reinterpret_cast<BLASTBufferQueue*>(ptr);
if (queue == nullptr) return -1;
return queue->getUndequeuedBufferCount();
}
static void nativeSetNextTransaction(JNIEnv* env, jclass clazz, jlong ptr, jlong transactionPtr) {
sp<BLASTBufferQueue> queue = reinterpret_cast<BLASTBufferQueue*>(ptr);
auto transaction = reinterpret_cast<SurfaceComposerClient::Transaction*>(transactionPtr);
queue->setNextTransaction(transaction);
}
static void nativeUpdate(JNIEnv* env, jclass clazz, jlong ptr, jlong surfaceControl, jlong width,
jlong height, jint format, jlong transactionPtr) {
sp<BLASTBufferQueue> queue = reinterpret_cast<BLASTBufferQueue*>(ptr);
auto transaction = reinterpret_cast<SurfaceComposerClient::Transaction*>(transactionPtr);
queue->update(reinterpret_cast<SurfaceControl*>(surfaceControl), width, height, format,
transaction);
}
static void nativeMergeWithNextTransaction(JNIEnv*, jclass clazz, jlong ptr, jlong transactionPtr,
jlong framenumber) {
sp<BLASTBufferQueue> queue = reinterpret_cast<BLASTBufferQueue*>(ptr);
auto transaction = reinterpret_cast<SurfaceComposerClient::Transaction*>(transactionPtr);
queue->mergeWithNextTransaction(transaction, framenumber);
}
static void nativeSetTransactionCompleteCallback(JNIEnv* env, jclass clazz, jlong ptr,
jlong frameNumber,
jobject transactionCompleteCallback) {
sp<BLASTBufferQueue> queue = reinterpret_cast<BLASTBufferQueue*>(ptr);
if (transactionCompleteCallback == nullptr) {
queue->setTransactionCompleteCallback(frameNumber, nullptr);
} else {
sp<TransactionCompleteCallbackWrapper> wrapper =
new TransactionCompleteCallbackWrapper{env, transactionCompleteCallback};
queue->setTransactionCompleteCallback(frameNumber, [wrapper](int64_t frameNr) {
wrapper->onTransactionComplete(frameNr);
});
}
}
static jlong nativeGetLastAcquiredFrameNum(JNIEnv* env, jclass clazz, jlong ptr) {
sp<BLASTBufferQueue> queue = reinterpret_cast<BLASTBufferQueue*>(ptr);
return queue->getLastAcquiredFrameNum();
}
static const JNINativeMethod gMethods[] = {
/* name, signature, funcPtr */
// clang-format off
{"nativeCreate", "(Ljava/lang/String;)J", (void*)nativeCreate},
{"nativeCreateAndUpdate", "(Ljava/lang/String;JJJI)J", (void*)nativeCreateAndUpdate},
{"nativeGetSurface", "(JZ)Landroid/view/Surface;", (void*)nativeGetSurface},
{"nativeSetUndequeuedBufferCount", "(JI)V", (void*)nativeSetUndequeuedBufferCount},
{"nativeGetUndequeuedBufferCount", "(J)I", (void*)nativeGetUndequeuedBufferCount},
{"nativeDestroy", "(J)V", (void*)nativeDestroy},
{"nativeSetNextTransaction", "(JJ)V", (void*)nativeSetNextTransaction},
{"nativeUpdate", "(JJJJIJ)V", (void*)nativeUpdate},
{"nativeMergeWithNextTransaction", "(JJJ)V", (void*)nativeMergeWithNextTransaction},
{"nativeSetTransactionCompleteCallback",
"(JJLandroid/graphics/BLASTBufferQueue$TransactionCompleteCallback;)V",
(void*)nativeSetTransactionCompleteCallback},
{"nativeGetLastAcquiredFrameNum", "(J)J", (void*)nativeGetLastAcquiredFrameNum},
// clang-format on
};
int register_android_graphics_BLASTBufferQueue(JNIEnv* env) {
int res = jniRegisterNativeMethods(env, "android/graphics/BLASTBufferQueue",
gMethods, NELEM(gMethods));
LOG_ALWAYS_FATAL_IF(res < 0, "Unable to register native methods.");
jclass transactionCompleteClass =
FindClassOrDie(env, "android/graphics/BLASTBufferQueue$TransactionCompleteCallback");
gTransactionCompleteCallback.onTransactionComplete =
GetMethodIDOrDie(env, transactionCompleteClass, "onTransactionComplete", "(J)V");
return 0;
}
} // namespace android
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