1 // Copyright 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/surface_texture.h"
6
7 #include <android/native_window_jni.h>
8
9 // TODO(boliu): Remove this include when we move off ICS.
10 #include "base/android/build_info.h"
11 #include "base/android/jni_android.h"
12 #include "base/logging.h"
13 #include "jni/SurfaceTexturePlatformWrapper_jni.h"
14 #include "ui/gl/android/scoped_java_surface.h"
15 #include "ui/gl/android/surface_texture_listener.h"
16 #include "ui/gl/gl_bindings.h"
17
18 // TODO(boliu): Remove this method when when we move off ICS. See
19 // http://crbug.com/161864.
GlContextMethodsAvailable()20 bool GlContextMethodsAvailable() {
21 bool available = base::android::BuildInfo::GetInstance()->sdk_int() >= 16;
22 if (!available)
23 LOG(WARNING) << "Running on unsupported device: rendering may not work";
24 return available;
25 }
26
27 namespace gfx {
28
SurfaceTexture(int texture_id)29 SurfaceTexture::SurfaceTexture(int texture_id) {
30 JNIEnv* env = base::android::AttachCurrentThread();
31 j_surface_texture_.Reset(
32 Java_SurfaceTexturePlatformWrapper_create(env, texture_id));
33 }
34
~SurfaceTexture()35 SurfaceTexture::~SurfaceTexture() {
36 JNIEnv* env = base::android::AttachCurrentThread();
37 Java_SurfaceTexturePlatformWrapper_destroy(env, j_surface_texture_.obj());
38 }
39
SetFrameAvailableCallback(const base::Closure & callback)40 void SurfaceTexture::SetFrameAvailableCallback(
41 const base::Closure& callback) {
42 JNIEnv* env = base::android::AttachCurrentThread();
43 Java_SurfaceTexturePlatformWrapper_setFrameAvailableCallback(
44 env,
45 j_surface_texture_.obj(),
46 reinterpret_cast<intptr_t>(new SurfaceTextureListener(callback)));
47 }
48
UpdateTexImage()49 void SurfaceTexture::UpdateTexImage() {
50 JNIEnv* env = base::android::AttachCurrentThread();
51 Java_SurfaceTexturePlatformWrapper_updateTexImage(env,
52 j_surface_texture_.obj());
53 }
54
GetTransformMatrix(float mtx[16])55 void SurfaceTexture::GetTransformMatrix(float mtx[16]) {
56 JNIEnv* env = base::android::AttachCurrentThread();
57
58 base::android::ScopedJavaLocalRef<jfloatArray> jmatrix(
59 env, env->NewFloatArray(16));
60 Java_SurfaceTexturePlatformWrapper_getTransformMatrix(
61 env, j_surface_texture_.obj(), jmatrix.obj());
62
63 jboolean is_copy;
64 jfloat* elements = env->GetFloatArrayElements(jmatrix.obj(), &is_copy);
65 for (int i = 0; i < 16; ++i) {
66 mtx[i] = static_cast<float>(elements[i]);
67 }
68 env->ReleaseFloatArrayElements(jmatrix.obj(), elements, JNI_ABORT);
69 }
70
SetDefaultBufferSize(int width,int height)71 void SurfaceTexture::SetDefaultBufferSize(int width, int height) {
72 JNIEnv* env = base::android::AttachCurrentThread();
73
74 if (width > 0 && height > 0) {
75 Java_SurfaceTexturePlatformWrapper_setDefaultBufferSize(
76 env, j_surface_texture_.obj(), static_cast<jint>(width),
77 static_cast<jint>(height));
78 } else {
79 LOG(WARNING) << "Not setting surface texture buffer size - "
80 "width or height is 0";
81 }
82 }
83
AttachToGLContext()84 void SurfaceTexture::AttachToGLContext() {
85 if (GlContextMethodsAvailable()) {
86 int texture_id;
87 glGetIntegerv(GL_TEXTURE_BINDING_EXTERNAL_OES, &texture_id);
88 DCHECK(texture_id);
89 JNIEnv* env = base::android::AttachCurrentThread();
90 Java_SurfaceTexturePlatformWrapper_attachToGLContext(
91 env, j_surface_texture_.obj(), texture_id);
92 }
93 }
94
DetachFromGLContext()95 void SurfaceTexture::DetachFromGLContext() {
96 if (GlContextMethodsAvailable()) {
97 JNIEnv* env = base::android::AttachCurrentThread();
98 Java_SurfaceTexturePlatformWrapper_detachFromGLContext(
99 env, j_surface_texture_.obj());
100 }
101 }
102
CreateSurface()103 ANativeWindow* SurfaceTexture::CreateSurface() {
104 JNIEnv* env = base::android::AttachCurrentThread();
105 ScopedJavaSurface surface(this);
106 ANativeWindow* native_window = ANativeWindow_fromSurface(
107 env, surface.j_surface().obj());
108 return native_window;
109 }
110
111 // static
RegisterSurfaceTexture(JNIEnv * env)112 bool SurfaceTexture::RegisterSurfaceTexture(JNIEnv* env) {
113 return RegisterNativesImpl(env);
114 }
115
116 } // namespace gfx
117