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 std::map<int, base::MemoryMappedFile::Region>& regions,
 107     const StartChildProcessCallback& callback) {
 108   JNIEnv* env = AttachCurrentThread();
 109   DCHECK(env);
 110
 111   // Create the Command line String[]
 112   ScopedJavaLocalRef<jobjectArray> j_argv = ToJavaArrayOfStrings(env, argv);
 113
 114   size_t file_count = files_to_register->GetMappingSize();
 115   DCHECK(file_count > 0);
 116
 117   ScopedJavaLocalRef<jclass> j_file_info_class = base::android::GetClass(
 118       env, "org/chromium/content/browser/FileDescriptorInfo");
 119   ScopedJavaLocalRef<jobjectArray> j_file_infos(
 120       env, env->NewObjectArray(file_count, j_file_info_class.obj(), NULL));
 121   base::android::CheckException(env);
 122
 123   for (size_t i = 0; i < file_count; ++i) {
 124     int fd = files_to_register->GetFDAt(i);
 125     PCHECK(0 <= fd);
 126     int id = files_to_register->GetIDAt(i);
 127     bool auto_close = files_to_register->OwnsFD(fd);
 128     int64 offset = 0L;
 129     int64 size = 0L;
 130     auto found_region_iter = regions.find(id);
 131     if (found_region_iter != regions.end()) {
 132       offset = found_region_iter->second.offset;
 133       size = found_region_iter->second.size;
 134     }
 135     ScopedJavaLocalRef<jobject> j_file_info =
 136         Java_ChildProcessLauncher_makeFdInfo(env, id, fd, auto_close, offset,
 137                                              size);
 138     PCHECK(j_file_info.obj());
 139     env->SetObjectArrayElement(j_file_infos.obj(), i, j_file_info.obj());
 140     if (auto_close) {
 141       ignore_result(files_to_register->ReleaseFD(fd).release());
 142     }
 143   }
 144
 145   Java_ChildProcessLauncher_start(
 146       env, base::android::GetApplicationContext(), j_argv.obj(),
 147       child_process_id, j_file_infos.obj(),
 148       reinterpret_cast<intptr_t>(new StartChildProcessCallback(callback)));
 149 }
 150
 151 void StopChildProcess(base::ProcessHandle handle) {
 152   JNIEnv* env = AttachCurrentThread();
 153   DCHECK(env);
 154   Java_ChildProcessLauncher_stop(env, static_cast<jint>(handle));
 155 }
 156
 157 bool IsChildProcessOomProtected(base::ProcessHandle handle) {
 158   JNIEnv* env = AttachCurrentThread();
 159   DCHECK(env);
 160   return Java_ChildProcessLauncher_isOomProtected(env,
 161       static_cast<jint>(handle));
 162 }
 163
 164 void SetChildProcessInForeground(base::ProcessHandle handle,
 165     bool in_foreground) {
 166   JNIEnv* env = AttachCurrentThread();
 167   DCHECK(env);
 168   return Java_ChildProcessLauncher_setInForeground(env,
 169       static_cast<jint>(handle), static_cast<jboolean>(in_foreground));
 170 }
 171
 172 void EstablishSurfacePeer(
 173     JNIEnv* env, jclass clazz,
 174     jint pid, jobject surface, jint primary_id, jint secondary_id) {
 175   ScopedJavaGlobalRef<jobject> jsurface;
 176   jsurface.Reset(env, surface);
 177   if (jsurface.is_null())
 178     return;
 179
 180   DCHECK(!BrowserThread::CurrentlyOn(BrowserThread::UI));
 181   BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, base::Bind(
 182       &SetSurfacePeer, jsurface, pid, primary_id, secondary_id));
 183 }
 184
 185 void RegisterViewSurface(int surface_id, jobject j_surface) {
 186   JNIEnv* env = AttachCurrentThread();
 187   DCHECK(env);
 188   Java_ChildProcessLauncher_registerViewSurface(env, surface_id, j_surface);
 189 }
 190
 191 void UnregisterViewSurface(int surface_id) {
 192   JNIEnv* env = AttachCurrentThread();
 193   DCHECK(env);
 194   Java_ChildProcessLauncher_unregisterViewSurface(env, surface_id);
 195 }
 196
 197 void CreateSurfaceTextureSurface(int surface_texture_id,
 198                                  int client_id,
 199                                  gfx::SurfaceTexture* surface_texture) {
 200   JNIEnv* env = AttachCurrentThread();
 201   DCHECK(env);
 202   Java_ChildProcessLauncher_createSurfaceTextureSurface(
 203       env,
 204       surface_texture_id,
 205       client_id,
 206       surface_texture->j_surface_texture().obj());
 207 }
 208
 209 void DestroySurfaceTextureSurface(int surface_texture_id, int client_id) {
 210   JNIEnv* env = AttachCurrentThread();
 211   DCHECK(env);
 212   Java_ChildProcessLauncher_destroySurfaceTextureSurface(
 213       env, surface_texture_id, client_id);
 214 }
 215
 216 gfx::ScopedJavaSurface GetSurfaceTextureSurface(int surface_texture_id,
 217                                                 int client_id) {
 218   JNIEnv* env = AttachCurrentThread();
 219   DCHECK(env);
 220   return gfx::ScopedJavaSurface::AcquireExternalSurface(
 221       Java_ChildProcessLauncher_getSurfaceTextureSurface(
 222           env, surface_texture_id, client_id).obj());
 223 }
 224
 225 jboolean IsSingleProcess(JNIEnv* env, jclass clazz) {
 226   return base::CommandLine::ForCurrentProcess()->HasSwitch(
 227       switches::kSingleProcess);
 228 }
 229
 230 bool RegisterChildProcessLauncher(JNIEnv* env) {
 231   return RegisterNativesImpl(env);
 232 }
 233
 234 }  // namespace content