content/browser/android/child_process_launcher_android.cc

   1 // Copyright (c) 2012 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 "content/browser/android/child_process_launcher_android.h"
   6
   7 #include "base/android/jni_android.h"
   8 #include "base/android/jni_array.h"
   9 #include "base/logging.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "content/browser/frame_host/render_frame_host_impl.h"
  12 #include "content/browser/media/android/browser_media_player_manager.h"
  13 #include "content/browser/media/media_web_contents_observer.h"
  14 #include "content/browser/renderer_host/compositor_impl_android.h"
  15 #include "content/browser/web_contents/web_contents_impl.h"
  16 #include "content/public/browser/browser_thread.h"
  17 #include "content/public/browser/render_process_host.h"
  18 #include "content/public/common/content_switches.h"
  19 #include "jni/ChildProcessLauncher_jni.h"
  20 #include "media/base/android/media_player_android.h"
  21 #include "ui/gl/android/surface_texture.h"
  22
  23 using base::android::AttachCurrentThread;
  24 using base::android::ToJavaArrayOfStrings;
  25 using base::android::ScopedJavaGlobalRef;
  26 using base::android::ScopedJavaLocalRef;
  27 using content::StartChildProcessCallback;
  28
  29 namespace content {
  30
  31 namespace {
  32
  33 // Pass a java surface object to the MediaPlayerAndroid object
  34 // identified by render process handle, render frame ID and player ID.
  35 static void SetSurfacePeer(
  36     const base::android::JavaRef<jobject>& surface,
  37     base::ProcessHandle render_process_handle,
  38     int render_frame_id,
  39     int player_id) {
  40   int render_process_id = 0;
  41   RenderProcessHost::iterator it = RenderProcessHost::AllHostsIterator();
  42   while (!it.IsAtEnd()) {
  43     if (it.GetCurrentValue()->GetHandle() == render_process_handle) {
  44       render_process_id = it.GetCurrentValue()->GetID();
  45       break;
  46     }
  47     it.Advance();
  48   }
  49   if (!render_process_id) {
  50     DVLOG(1) << "Cannot find render process for render_process_handle "
  51              << render_process_handle;
  52     return;
  53   }
  54
  55   RenderFrameHostImpl* frame =
  56       RenderFrameHostImpl::FromID(render_process_id, render_frame_id);
  57   if (!frame) {
  58     DVLOG(1) << "Cannot find frame for render_frame_id " << render_frame_id;
  59     return;
  60   }
  61
  62   WebContentsImpl* web_contents =
  63       static_cast<WebContentsImpl*>(WebContents::FromRenderFrameHost(frame));
  64   BrowserMediaPlayerManager* player_manager =
  65       web_contents->media_web_contents_observer()->GetMediaPlayerManager(frame);
  66   if (!player_manager) {
  67     DVLOG(1) << "Cannot find the media player manager for frame " << frame;
  68     return;
  69   }
  70
  71   media::MediaPlayerAndroid* player = player_manager->GetPlayer(player_id);
  72   if (!player) {
  73     DVLOG(1) << "Cannot find media player for player_id " << player_id;
  74     return;
  75   }
  76
  77   if (player != player_manager->GetFullscreenPlayer()) {
  78     gfx::ScopedJavaSurface scoped_surface(surface);
  79     player->SetVideoSurface(scoped_surface.Pass());
  80   }
  81 }
  82
  83 }  // anonymous namespace
  84
  85 // Called from ChildProcessLauncher.java when the ChildProcess was
  86 // started.
  87 // |client_context| is the pointer to StartChildProcessCallback which was
  88 // passed in from StartChildProcess.
  89 // |handle| is the processID of the child process as originated in Java, 0 if
  90 // the ChildProcess could not be created.
  91 static void OnChildProcessStarted(JNIEnv*,
  92                                   jclass,
  93                                   jlong client_context,
  94                                   jint handle) {
  95   StartChildProcessCallback* callback =
  96       reinterpret_cast<StartChildProcessCallback*>(client_context);
  97   if (handle)
  98     callback->Run(static_cast<base::ProcessHandle>(handle));
  99   delete callback;
 100 }
 101
 102 void StartChildProcess(
 103     const base::CommandLine::StringVector& argv,
 104     int child_process_id,
 105     scoped_ptr<content::FileDescriptorInfo> files_to_register,
 106     const StartChildProcessCallback& callback) {
 107   JNIEnv* env = AttachCurrentThread();
 108   DCHECK(env);
 109
 110   // Create the Command line String[]
 111   ScopedJavaLocalRef<jobjectArray> j_argv = ToJavaArrayOfStrings(env, argv);
 112
 113   size_t file_count = files_to_register->GetMappingSize();
 114   DCHECK(file_count > 0);
 115
 116   ScopedJavaLocalRef<jintArray> j_file_ids(env, env->NewIntArray(file_count));
 117   base::android::CheckException(env);
 118   jint* file_ids = env->GetIntArrayElements(j_file_ids.obj(), NULL);
 119   base::android::CheckException(env);
 120   ScopedJavaLocalRef<jintArray> j_file_fds(env, env->NewIntArray(file_count));
 121   base::android::CheckException(env);
 122   jint* file_fds = env->GetIntArrayElements(j_file_fds.obj(), NULL);
 123   base::android::CheckException(env);
 124   ScopedJavaLocalRef<jbooleanArray> j_file_auto_close(
 125       env, env->NewBooleanArray(file_count));
 126   base::android::CheckException(env);
 127   jboolean* file_auto_close =
 128       env->GetBooleanArrayElements(j_file_auto_close.obj(), NULL);
 129   base::android::CheckException(env);
 130   for (size_t i = 0; i < file_count; ++i) {
 131     // Owners of passed descriptors can outlive this function and we don't know
 132     // when it is safe to close() them. So we pass dup()-ed FD and
 133     // let ChildProcessLauncher in java take care of their lifetimes.
 134     // TODO(morrita): Drop FileDescriptorInfo.mAutoClose on Java side.
 135     file_auto_close[i] = true;  // This indicates ownership transfer.
 136     file_ids[i] = files_to_register->GetIDAt(i);
 137     file_fds[i] = dup(files_to_register->GetFDAt(i));
 138     PCHECK(0 <= file_fds[i]);
 139   }
 140   env->ReleaseIntArrayElements(j_file_ids.obj(), file_ids, 0);
 141   env->ReleaseIntArrayElements(j_file_fds.obj(), file_fds, 0);
 142   env->ReleaseBooleanArrayElements(j_file_auto_close.obj(), file_auto_close, 0);
 143
 144   Java_ChildProcessLauncher_start(env,
 145       base::android::GetApplicationContext(),
 146       j_argv.obj(),
 147       child_process_id,
 148       j_file_ids.obj(),
 149       j_file_fds.obj(),
 150       j_file_auto_close.obj(),
 151       reinterpret_cast<intptr_t>(new StartChildProcessCallback(callback)));
 152 }
 153
 154 void StopChildProcess(base::ProcessHandle handle) {
 155   JNIEnv* env = AttachCurrentThread();
 156   DCHECK(env);
 157   Java_ChildProcessLauncher_stop(env, static_cast<jint>(handle));
 158 }
 159
 160 bool IsChildProcessOomProtected(base::ProcessHandle handle) {
 161   JNIEnv* env = AttachCurrentThread();
 162   DCHECK(env);
 163   return Java_ChildProcessLauncher_isOomProtected(env,
 164       static_cast<jint>(handle));
 165 }
 166
 167 void SetChildProcessInForeground(base::ProcessHandle handle,
 168     bool in_foreground) {
 169   JNIEnv* env = AttachCurrentThread();
 170   DCHECK(env);
 171   return Java_ChildProcessLauncher_setInForeground(env,
 172       static_cast<jint>(handle), static_cast<jboolean>(in_foreground));
 173 }
 174
 175 void EstablishSurfacePeer(
 176     JNIEnv* env, jclass clazz,
 177     jint pid, jobject surface, jint primary_id, jint secondary_id) {
 178   ScopedJavaGlobalRef<jobject> jsurface;
 179   jsurface.Reset(env, surface);
 180   if (jsurface.is_null())
 181     return;
 182
 183   DCHECK(!BrowserThread::CurrentlyOn(BrowserThread::UI));
 184   BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, base::Bind(
 185       &SetSurfacePeer, jsurface, pid, primary_id, secondary_id));
 186 }
 187
 188 void RegisterViewSurface(int surface_id, jobject j_surface) {
 189   JNIEnv* env = AttachCurrentThread();
 190   DCHECK(env);
 191   Java_ChildProcessLauncher_registerViewSurface(env, surface_id, j_surface);
 192 }
 193
 194 void UnregisterViewSurface(int surface_id) {
 195   JNIEnv* env = AttachCurrentThread();
 196   DCHECK(env);
 197   Java_ChildProcessLauncher_unregisterViewSurface(env, surface_id);
 198 }
 199
 200 void CreateSurfaceTextureSurface(int surface_texture_id,
 201                                  int client_id,
 202                                  gfx::SurfaceTexture* surface_texture) {
 203   JNIEnv* env = AttachCurrentThread();
 204   DCHECK(env);
 205   Java_ChildProcessLauncher_createSurfaceTextureSurface(
 206       env,
 207       surface_texture_id,
 208       client_id,
 209       surface_texture->j_surface_texture().obj());
 210 }
 211
 212 void DestroySurfaceTextureSurface(int surface_texture_id, int client_id) {
 213   JNIEnv* env = AttachCurrentThread();
 214   DCHECK(env);
 215   Java_ChildProcessLauncher_destroySurfaceTextureSurface(
 216       env, surface_texture_id, client_id);
 217 }
 218
 219 gfx::ScopedJavaSurface GetSurfaceTextureSurface(int surface_texture_id,
 220                                                 int client_id) {
 221   JNIEnv* env = AttachCurrentThread();
 222   DCHECK(env);
 223   return gfx::ScopedJavaSurface::AcquireExternalSurface(
 224       Java_ChildProcessLauncher_getSurfaceTextureSurface(
 225           env, surface_texture_id, client_id).obj());
 226 }
 227
 228 jboolean IsSingleProcess(JNIEnv* env, jclass clazz) {
 229   return base::CommandLine::ForCurrentProcess()->HasSwitch(
 230       switches::kSingleProcess);
 231 }
 232
 233 bool RegisterChildProcessLauncher(JNIEnv* env) {
 234   return RegisterNativesImpl(env);
 235 }
 236
 237 }  // namespace content