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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "remoting/client/jni/jni_display_handler.h" | |
| 6 | |
| 7 #include "base/android/jni_android.h" | |
| 8 #include "base/bind.h" | |
| 9 #include "base/location.h" | |
| 10 #include "base/memory/ptr_util.h" | |
| 11 #include "base/stl_util.h" | |
| 12 #include "jni/Display_jni.h" | |
| 13 #include "remoting/client/cursor_shape_stub_proxy.h" | |
| 14 #include "remoting/client/jni/chromoting_jni_runtime.h" | |
| 15 #include "remoting/client/jni/jni_client.h" | |
| 16 #include "remoting/client/jni/jni_video_renderer.h" | |
| 17 | |
| 18 using base::android::JavaParamRef; | |
| 19 | |
| 20 namespace { | |
| 21 | |
| 22 const int kBytesPerPixel = 4; | |
| 23 | |
| 24 } | |
| 25 | |
| 26 namespace remoting { | |
| 27 | |
| 28 // JniDisplayHandler definitions. | |
| 29 JniDisplayHandler::JniDisplayHandler(ChromotingJniRuntime* runtime) | |
| 30 : runtime_(runtime), | |
| 31 weak_factory_(this) { | |
| 32 weak_ptr_ = weak_factory_.GetWeakPtr(); | |
| 33 JNIEnv* env = base::android::AttachCurrentThread(); | |
| 34 java_display_.Reset(Java_Display_createJavaDisplayObject( | |
| 35 env, reinterpret_cast<intptr_t>(this))); | |
| 36 } | |
| 37 | |
| 38 JniDisplayHandler::~JniDisplayHandler() { | |
| 39 DCHECK(runtime_->display_task_runner()->BelongsToCurrentThread()); | |
| 40 Java_Display_invalidate(base::android::AttachCurrentThread(), java_display_); | |
| 41 } | |
| 42 | |
| 43 void JniDisplayHandler::InitializeClient( | |
| 44 const base::android::JavaRef<jobject>& java_client) { | |
| 45 return Java_Display_initializeClient(base::android::AttachCurrentThread(), | |
| 46 java_display_, java_client); | |
| 47 } | |
| 48 | |
| 49 std::unique_ptr<protocol::CursorShapeStub> | |
| 50 JniDisplayHandler::CreateCursorShapeStub() { | |
| 51 return base::WrapUnique(new CursorShapeStubProxy( | |
| 52 weak_ptr_, runtime_->display_task_runner())); | |
| 53 } | |
| 54 | |
| 55 std::unique_ptr<protocol::VideoRenderer> | |
| 56 JniDisplayHandler::CreateVideoRenderer() { | |
| 57 return base::WrapUnique( | |
| 58 new JniVideoRenderer(runtime_, weak_ptr_)); | |
| 59 } | |
| 60 | |
| 61 // static | |
| 62 base::android::ScopedJavaLocalRef<jobject> JniDisplayHandler::NewBitmap( | |
| 63 int width, | |
| 64 int height) { | |
| 65 JNIEnv* env = base::android::AttachCurrentThread(); | |
| 66 return Java_Display_newBitmap(env, width, height); | |
| 67 } | |
| 68 | |
| 69 void JniDisplayHandler::UpdateFrameBitmap( | |
| 70 base::android::ScopedJavaGlobalRef<jobject> bitmap) { | |
| 71 DCHECK(runtime_->display_task_runner()->BelongsToCurrentThread()); | |
| 72 | |
| 73 JNIEnv* env = base::android::AttachCurrentThread(); | |
| 74 Java_Display_setVideoFrame(env, java_display_, bitmap); | |
| 75 } | |
| 76 | |
| 77 void JniDisplayHandler::RedrawCanvas() { | |
| 78 DCHECK(runtime_->display_task_runner()->BelongsToCurrentThread()); | |
| 79 | |
| 80 JNIEnv* env = base::android::AttachCurrentThread(); | |
| 81 Java_Display_redrawGraphicsInternal(env, java_display_); | |
| 82 } | |
| 83 | |
| 84 // static | |
| 85 bool JniDisplayHandler::RegisterJni(JNIEnv* env) { | |
| 86 return RegisterNativesImpl(env); | |
| 87 } | |
| 88 | |
| 89 void JniDisplayHandler::ScheduleRedraw( | |
| 90 JNIEnv* env, | |
| 91 const base::android::JavaParamRef<jobject>& caller) { | |
| 92 runtime_->display_task_runner()->PostTask( | |
| 93 FROM_HERE, base::Bind(&JniDisplayHandler::RedrawCanvas, weak_ptr_)); | |
| 94 } | |
| 95 | |
| 96 void JniDisplayHandler::SetCursorShape( | |
| 97 const protocol::CursorShapeInfo& cursor_shape) { | |
| 98 DCHECK(runtime_->display_task_runner()->BelongsToCurrentThread()); | |
| 99 | |
| 100 // const_cast<> is safe as long as the Java updateCursorShape() method copies | |
| 101 // the data out of the buffer without mutating it, and doesn't keep any | |
| 102 // reference to the buffer afterwards. Unfortunately, there seems to be no way | |
| 103 // to create a read-only ByteBuffer from a pointer-to-const. | |
| 104 char* data = | |
| 105 base::string_as_array(const_cast<std::string*>(&cursor_shape.data())); | |
| 106 int cursor_total_bytes = | |
| 107 cursor_shape.width() * cursor_shape.height() * kBytesPerPixel; | |
| 108 | |
| 109 JNIEnv* env = base::android::AttachCurrentThread(); | |
| 110 base::android::ScopedJavaLocalRef<jobject> buffer( | |
| 111 env, env->NewDirectByteBuffer(data, cursor_total_bytes)); | |
| 112 Java_Display_updateCursorShape( | |
| 113 env, java_display_, cursor_shape.width(), cursor_shape.height(), | |
| 114 cursor_shape.hotspot_x(), cursor_shape.hotspot_y(), buffer); | |
| 115 } | |
| 116 | |
| 117 } // namespace remoting | |
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