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 #include "base/android/jni_android.h"
  10 #include "base/logging.h"
  11 #include "jni/SurfaceTexturePlatformWrapper_jni.h"
  12 #include "ui/gl/android/scoped_java_surface.h"
  13 #include "ui/gl/android/surface_texture_listener.h"
  14 #include "ui/gl/gl_bindings.h"
  15
  16 namespace gfx {
  17
  18 scoped_refptr<SurfaceTexture> SurfaceTexture::Create(int texture_id) {
  19   JNIEnv* env = base::android::AttachCurrentThread();
  20   return new SurfaceTexture(
  21       Java_SurfaceTexturePlatformWrapper_create(env, texture_id));
  22 }
  23
  24 SurfaceTexture::SurfaceTexture(
  25     const base::android::ScopedJavaLocalRef<jobject>& j_surface_texture) {
  26   j_surface_texture_.Reset(j_surface_texture);
  27 }
  28
  29 SurfaceTexture::~SurfaceTexture() {
  30   JNIEnv* env = base::android::AttachCurrentThread();
  31   Java_SurfaceTexturePlatformWrapper_destroy(env, j_surface_texture_.obj());
  32 }
  33
  34 void SurfaceTexture::SetFrameAvailableCallback(
  35     const base::Closure& callback) {
  36   JNIEnv* env = base::android::AttachCurrentThread();
  37   Java_SurfaceTexturePlatformWrapper_setFrameAvailableCallback(
  38       env,
  39       j_surface_texture_.obj(),
  40       reinterpret_cast<intptr_t>(new SurfaceTextureListener(callback)));
  41 }
  42
  43 void SurfaceTexture::UpdateTexImage() {
  44   JNIEnv* env = base::android::AttachCurrentThread();
  45   Java_SurfaceTexturePlatformWrapper_updateTexImage(env,
  46                                                     j_surface_texture_.obj());
  47 }
  48
  49 void SurfaceTexture::GetTransformMatrix(float mtx[16]) {
  50   JNIEnv* env = base::android::AttachCurrentThread();
  51
  52   base::android::ScopedJavaLocalRef<jfloatArray> jmatrix(
  53       env, env->NewFloatArray(16));
  54   Java_SurfaceTexturePlatformWrapper_getTransformMatrix(
  55       env, j_surface_texture_.obj(), jmatrix.obj());
  56
  57   jboolean is_copy;
  58   jfloat* elements = env->GetFloatArrayElements(jmatrix.obj(), &is_copy);
  59   for (int i = 0; i < 16; ++i) {
  60     mtx[i] = static_cast<float>(elements[i]);
  61   }
  62   env->ReleaseFloatArrayElements(jmatrix.obj(), elements, JNI_ABORT);
  63 }
  64
  65 void SurfaceTexture::AttachToGLContext() {
  66   int texture_id;
  67   glGetIntegerv(GL_TEXTURE_BINDING_EXTERNAL_OES, &texture_id);
  68   DCHECK(texture_id);
  69   JNIEnv* env = base::android::AttachCurrentThread();
  70   Java_SurfaceTexturePlatformWrapper_attachToGLContext(
  71       env, j_surface_texture_.obj(), texture_id);
  72 }
  73
  74 void SurfaceTexture::DetachFromGLContext() {
  75   JNIEnv* env = base::android::AttachCurrentThread();
  76   Java_SurfaceTexturePlatformWrapper_detachFromGLContext(
  77       env, j_surface_texture_.obj());
  78 }
  79
  80 ANativeWindow* SurfaceTexture::CreateSurface() {
  81   JNIEnv* env = base::android::AttachCurrentThread();
  82   ScopedJavaSurface surface(this);
  83   // Note: This ensures that any local references used by
  84   // ANativeWindow_fromSurface are released immediately. This is needed as a
  85   // workaround for https://code.google.com/p/android/issues/detail?id=68174
  86   base::android::ScopedJavaLocalFrame scoped_local_reference_frame(env);
  87   ANativeWindow* native_window = ANativeWindow_fromSurface(
  88       env, surface.j_surface().obj());
  89   return native_window;
  90 }
  91
  92 bool SurfaceTexture::RegisterSurfaceTexture(JNIEnv* env) {
  93   return RegisterNativesImpl(env);
  94 }
  95
  96 }  // namespace gfx