ui/gl/android/surface_texture.cc

   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.
  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
  29 scoped_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
  35 scoped_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
  43 SurfaceTexture::SurfaceTexture(
  44     const base::android::ScopedJavaLocalRef<jobject>& j_surface_texture) {
  45   j_surface_texture_.Reset(j_surface_texture);
  46 }
  47
  48 SurfaceTexture::~SurfaceTexture() {
  49   JNIEnv* env = base::android::AttachCurrentThread();
  50   Java_SurfaceTexturePlatformWrapper_destroy(env, j_surface_texture_.obj());
  51 }
  52
  53 void 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
  62 void SurfaceTexture::UpdateTexImage() {
  63   JNIEnv* env = base::android::AttachCurrentThread();
  64   Java_SurfaceTexturePlatformWrapper_updateTexImage(env,
  65                                                     j_surface_texture_.obj());
  66 }
  67
  68 void SurfaceTexture::ReleaseTexImage() {
  69   DCHECK(IsSingleBufferModeSupported());
  70   JNIEnv* env = base::android::AttachCurrentThread();
  71   Java_SurfaceTexturePlatformWrapper_releaseTexImage(env,
  72                                                      j_surface_texture_.obj());
  73 }
  74
  75 void 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
  91 void 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
 104 void 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
 115 void SurfaceTexture::DetachFromGLContext() {
 116   if (GlContextMethodsAvailable()) {
 117     JNIEnv* env = base::android::AttachCurrentThread();
 118     Java_SurfaceTexturePlatformWrapper_detachFromGLContext(
 119         env, j_surface_texture_.obj());
 120   }
 121 }
 122
 123 ANativeWindow* 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
 136 bool SurfaceTexture::IsSingleBufferModeSupported() {
 137   return base::android::BuildInfo::GetInstance()->sdk_int() >= 19;
 138 }
 139
 140 bool SurfaceTexture::RegisterSurfaceTexture(JNIEnv* env) {
 141   return RegisterNativesImpl(env);
 142 }
 143
 144 }  // namespace gfx