- add sources.
[platform/framework/web/crosswalk.git] / src / ui / gl / android / scoped_java_surface.cc
1 // Copyright (c) 2013 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 "ui/gl/android/scoped_java_surface.h"
6
7 #include "base/logging.h"
8 #include "jni/Surface_jni.h"
9 #include "ui/gl/android/surface_texture.h"
10
11 namespace {
12
13 bool g_jni_initialized = false;
14
15 void RegisterNativesIfNeeded(JNIEnv* env) {
16   if (!g_jni_initialized) {
17     JNI_Surface::RegisterNativesImpl(env);
18     g_jni_initialized = true;
19   }
20 }
21
22 }  // anonymous namespace
23
24 namespace gfx {
25
26 ScopedJavaSurface::ScopedJavaSurface() {
27 }
28
29 ScopedJavaSurface::ScopedJavaSurface(
30     const base::android::JavaRef<jobject>& surface)
31     : auto_release_(true),
32       is_protected_(false) {
33   JNIEnv* env = base::android::AttachCurrentThread();
34   RegisterNativesIfNeeded(env);
35   DCHECK(env->IsInstanceOf(surface.obj(), g_Surface_clazz));
36   j_surface_.Reset(surface);
37 }
38
39 ScopedJavaSurface::ScopedJavaSurface(
40     const SurfaceTexture* surface_texture)
41     : auto_release_(true),
42       is_protected_(false) {
43   JNIEnv* env = base::android::AttachCurrentThread();
44   RegisterNativesIfNeeded(env);
45   ScopedJavaLocalRef<jobject> tmp(JNI_Surface::Java_Surface_Constructor(
46       env, surface_texture->j_surface_texture().obj()));
47   DCHECK(!tmp.is_null());
48   j_surface_.Reset(tmp);
49 }
50
51 ScopedJavaSurface::ScopedJavaSurface(RValue rvalue) {
52   MoveFrom(*rvalue.object);
53 }
54
55 ScopedJavaSurface& ScopedJavaSurface::operator=(RValue rhs) {
56   MoveFrom(*rhs.object);
57   return *this;
58 }
59
60 ScopedJavaSurface::~ScopedJavaSurface() {
61   if (auto_release_ && !j_surface_.is_null()) {
62     JNIEnv* env = base::android::AttachCurrentThread();
63     JNI_Surface::Java_Surface_release(env, j_surface_.obj());
64   }
65 }
66
67 void ScopedJavaSurface::MoveFrom(ScopedJavaSurface& other) {
68   JNIEnv* env = base::android::AttachCurrentThread();
69   j_surface_.Reset(env, other.j_surface_.Release());
70   auto_release_ = other.auto_release_;
71   is_protected_ = other.is_protected_;
72 }
73
74 bool ScopedJavaSurface::IsEmpty() const {
75   return j_surface_.is_null();
76 }
77
78 // static
79 ScopedJavaSurface ScopedJavaSurface::AcquireExternalSurface(jobject surface) {
80   JNIEnv* env = base::android::AttachCurrentThread();
81   ScopedJavaLocalRef<jobject> surface_ref;
82   surface_ref.Reset(env, surface);
83   gfx::ScopedJavaSurface scoped_surface(surface_ref);
84   scoped_surface.auto_release_ = false;
85   scoped_surface.is_protected_ = true;
86   return scoped_surface;
87 }
88
89 }  // namespace gfx