src/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 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
  35 SurfaceTexture::~SurfaceTexture() {
  36   JNIEnv* env = base::android::AttachCurrentThread();
  37   Java_SurfaceTexturePlatformWrapper_destroy(env, j_surface_texture_.obj());
  38 }
  39
  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<int>(new SurfaceTextureListener(callback)));
  47 }
  48
  49 void SurfaceTexture::UpdateTexImage() {
  50   JNIEnv* env = base::android::AttachCurrentThread();
  51   Java_SurfaceTexturePlatformWrapper_updateTexImage(env,
  52                                                     j_surface_texture_.obj());
  53 }
  54
  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
  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
  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
  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
 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
 112 bool SurfaceTexture::RegisterSurfaceTexture(JNIEnv* env) {
 113   return RegisterNativesImpl(env);
 114 }
 115
 116 }  // namespace gfx