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 Chromium stops supporting ICS.
  19 bool GlContextMethodsAvailable() {
  20   bool available = base::android::BuildInfo::GetInstance()->sdk_int() >= 16;
  21   if (!available)
  22     LOG(WARNING) << "Running on unsupported device: rendering may not work";
  23   return available;
  24 }
  25
  26 namespace gfx {
  27
  28 scoped_refptr<SurfaceTexture> SurfaceTexture::Create(int texture_id) {
  29   JNIEnv* env = base::android::AttachCurrentThread();
  30   return new SurfaceTexture(
  31       Java_SurfaceTexturePlatformWrapper_create(env, texture_id));
  32 }
  33
  34 scoped_refptr<SurfaceTexture> SurfaceTexture::CreateSingleBuffered(
  35     int texture_id) {
  36   DCHECK(IsSingleBufferModeSupported());
  37   JNIEnv* env = base::android::AttachCurrentThread();
  38   return new SurfaceTexture(
  39       Java_SurfaceTexturePlatformWrapper_createSingleBuffered(env, texture_id));
  40 }
  41
  42 SurfaceTexture::SurfaceTexture(
  43     const base::android::ScopedJavaLocalRef<jobject>& j_surface_texture) {
  44   j_surface_texture_.Reset(j_surface_texture);
  45 }
  46
  47 SurfaceTexture::~SurfaceTexture() {
  48   JNIEnv* env = base::android::AttachCurrentThread();
  49   Java_SurfaceTexturePlatformWrapper_destroy(env, j_surface_texture_.obj());
  50 }
  51
  52 void SurfaceTexture::SetFrameAvailableCallback(
  53     const base::Closure& callback) {
  54   JNIEnv* env = base::android::AttachCurrentThread();
  55   Java_SurfaceTexturePlatformWrapper_setFrameAvailableCallback(
  56       env,
  57       j_surface_texture_.obj(),
  58       reinterpret_cast<intptr_t>(new SurfaceTextureListener(callback)));
  59 }
  60
  61 void SurfaceTexture::UpdateTexImage() {
  62   JNIEnv* env = base::android::AttachCurrentThread();
  63   Java_SurfaceTexturePlatformWrapper_updateTexImage(env,
  64                                                     j_surface_texture_.obj());
  65 }
  66
  67 void SurfaceTexture::ReleaseTexImage() {
  68   DCHECK(IsSingleBufferModeSupported());
  69   JNIEnv* env = base::android::AttachCurrentThread();
  70   Java_SurfaceTexturePlatformWrapper_releaseTexImage(env,
  71                                                      j_surface_texture_.obj());
  72 }
  73
  74 void SurfaceTexture::GetTransformMatrix(float mtx[16]) {
  75   JNIEnv* env = base::android::AttachCurrentThread();
  76
  77   base::android::ScopedJavaLocalRef<jfloatArray> jmatrix(
  78       env, env->NewFloatArray(16));
  79   Java_SurfaceTexturePlatformWrapper_getTransformMatrix(
  80       env, j_surface_texture_.obj(), jmatrix.obj());
  81
  82   jboolean is_copy;
  83   jfloat* elements = env->GetFloatArrayElements(jmatrix.obj(), &is_copy);
  84   for (int i = 0; i < 16; ++i) {
  85     mtx[i] = static_cast<float>(elements[i]);
  86   }
  87   env->ReleaseFloatArrayElements(jmatrix.obj(), elements, JNI_ABORT);
  88 }
  89
  90 void SurfaceTexture::SetDefaultBufferSize(int width, int height) {
  91   JNIEnv* env = base::android::AttachCurrentThread();
  92
  93   if (width > 0 && height > 0) {
  94     Java_SurfaceTexturePlatformWrapper_setDefaultBufferSize(
  95         env, j_surface_texture_.obj(), static_cast<jint>(width),
  96         static_cast<jint>(height));
  97   } else {
  98     LOG(WARNING) << "Not setting surface texture buffer size - "
  99                     "width or height is 0";
 100   }
 101 }
 102
 103 void SurfaceTexture::AttachToGLContext() {
 104   if (GlContextMethodsAvailable()) {
 105     int texture_id;
 106     glGetIntegerv(GL_TEXTURE_BINDING_EXTERNAL_OES, &texture_id);
 107     DCHECK(texture_id);
 108     JNIEnv* env = base::android::AttachCurrentThread();
 109     Java_SurfaceTexturePlatformWrapper_attachToGLContext(
 110         env, j_surface_texture_.obj(), texture_id);
 111   }
 112 }
 113
 114 void SurfaceTexture::DetachFromGLContext() {
 115   if (GlContextMethodsAvailable()) {
 116     JNIEnv* env = base::android::AttachCurrentThread();
 117     Java_SurfaceTexturePlatformWrapper_detachFromGLContext(
 118         env, j_surface_texture_.obj());
 119   }
 120 }
 121
 122 ANativeWindow* SurfaceTexture::CreateSurface() {
 123   JNIEnv* env = base::android::AttachCurrentThread();
 124   ScopedJavaSurface surface(this);
 125   // Note: This ensures that any local references used by
 126   // ANativeWindow_fromSurface are released immediately. This is needed as a
 127   // workaround for https://code.google.com/p/android/issues/detail?id=68174
 128   base::android::ScopedJavaLocalFrame scoped_local_reference_frame(env);
 129   ANativeWindow* native_window = ANativeWindow_fromSurface(
 130       env, surface.j_surface().obj());
 131   return native_window;
 132 }
 133
 134 // static
 135 bool SurfaceTexture::IsSingleBufferModeSupported() {
 136   return base::android::BuildInfo::GetInstance()->sdk_int() >= 19;
 137 }
 138
 139 bool SurfaceTexture::RegisterSurfaceTexture(JNIEnv* env) {
 140   return RegisterNativesImpl(env);
 141 }
 142
 143 }  // namespace gfx