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.
20bool 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
27namespace gfx {
28
29scoped_refptr<SurfaceTexture> SurfaceTexture::Create(int texture_id) {
30  JNIEnv* env = base::android::AttachCurrentThread();
31  return new SurfaceTexture(
32      Java_SurfaceTexturePlatformWrapper_create(env, texture_id));
33}
34
35scoped_refptr<SurfaceTexture> SurfaceTexture::CreateSingleBuffered(
36    int texture_id) {
37  DCHECK(IsSingleBufferModeSupported());
38  JNIEnv* env = base::android::AttachCurrentThread();
39  return new SurfaceTexture(
40      Java_SurfaceTexturePlatformWrapper_createSingleBuffered(env, texture_id));
41}
42
43SurfaceTexture::SurfaceTexture(
44    const base::android::ScopedJavaLocalRef<jobject>& j_surface_texture) {
45  j_surface_texture_.Reset(j_surface_texture);
46}
47
48SurfaceTexture::~SurfaceTexture() {
49  JNIEnv* env = base::android::AttachCurrentThread();
50  Java_SurfaceTexturePlatformWrapper_destroy(env, j_surface_texture_.obj());
51}
52
53void SurfaceTexture::SetFrameAvailableCallback(
54    const base::Closure& callback) {
55  JNIEnv* env = base::android::AttachCurrentThread();
56  Java_SurfaceTexturePlatformWrapper_setFrameAvailableCallback(
57      env,
58      j_surface_texture_.obj(),
59      reinterpret_cast<intptr_t>(new SurfaceTextureListener(callback)));
60}
61
62void SurfaceTexture::UpdateTexImage() {
63  JNIEnv* env = base::android::AttachCurrentThread();
64  Java_SurfaceTexturePlatformWrapper_updateTexImage(env,
65                                                    j_surface_texture_.obj());
66}
67
68void SurfaceTexture::ReleaseTexImage() {
69  DCHECK(IsSingleBufferModeSupported());
70  JNIEnv* env = base::android::AttachCurrentThread();
71  Java_SurfaceTexturePlatformWrapper_releaseTexImage(env,
72                                                     j_surface_texture_.obj());
73}
74
75void SurfaceTexture::GetTransformMatrix(float mtx[16]) {
76  JNIEnv* env = base::android::AttachCurrentThread();
77
78  base::android::ScopedJavaLocalRef<jfloatArray> jmatrix(
79      env, env->NewFloatArray(16));
80  Java_SurfaceTexturePlatformWrapper_getTransformMatrix(
81      env, j_surface_texture_.obj(), jmatrix.obj());
82
83  jboolean is_copy;
84  jfloat* elements = env->GetFloatArrayElements(jmatrix.obj(), &is_copy);
85  for (int i = 0; i < 16; ++i) {
86    mtx[i] = static_cast<float>(elements[i]);
87  }
88  env->ReleaseFloatArrayElements(jmatrix.obj(), elements, JNI_ABORT);
89}
90
91void SurfaceTexture::SetDefaultBufferSize(int width, int height) {
92  JNIEnv* env = base::android::AttachCurrentThread();
93
94  if (width > 0 && height > 0) {
95    Java_SurfaceTexturePlatformWrapper_setDefaultBufferSize(
96        env, j_surface_texture_.obj(), static_cast<jint>(width),
97        static_cast<jint>(height));
98  } else {
99    LOG(WARNING) << "Not setting surface texture buffer size - "
100                    "width or height is 0";
101  }
102}
103
104void SurfaceTexture::AttachToGLContext() {
105  if (GlContextMethodsAvailable()) {
106    int texture_id;
107    glGetIntegerv(GL_TEXTURE_BINDING_EXTERNAL_OES, &texture_id);
108    DCHECK(texture_id);
109    JNIEnv* env = base::android::AttachCurrentThread();
110    Java_SurfaceTexturePlatformWrapper_attachToGLContext(
111        env, j_surface_texture_.obj(), texture_id);
112  }
113}
114
115void SurfaceTexture::DetachFromGLContext() {
116  if (GlContextMethodsAvailable()) {
117    JNIEnv* env = base::android::AttachCurrentThread();
118    Java_SurfaceTexturePlatformWrapper_detachFromGLContext(
119        env, j_surface_texture_.obj());
120  }
121}
122
123ANativeWindow* SurfaceTexture::CreateSurface() {
124  JNIEnv* env = base::android::AttachCurrentThread();
125  ScopedJavaSurface surface(this);
126  // Note: This ensures that any local references used by
127  // ANativeWindow_fromSurface are released immediately. This is needed as a
128  // workaround for https://code.google.com/p/android/issues/detail?id=68174
129  base::android::ScopedJavaLocalFrame scoped_local_reference_frame(env);
130  ANativeWindow* native_window = ANativeWindow_fromSurface(
131      env, surface.j_surface().obj());
132  return native_window;
133}
134
135// static
136bool SurfaceTexture::IsSingleBufferModeSupported() {
137  return base::android::BuildInfo::GetInstance()->sdk_int() >= 19;
138}
139
140bool SurfaceTexture::RegisterSurfaceTexture(JNIEnv* env) {
141  return RegisterNativesImpl(env);
142}
143
144}  // namespace gfx
145