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/media/android/browser_media_player_manager.h"
  12 #include "content/browser/renderer_host/compositor_impl_android.h"
  13 #include "content/browser/renderer_host/render_view_host_impl.h"
  14 #include "content/public/browser/browser_thread.h"
  15 #include "content/public/browser/render_process_host.h"
  16 #include "content/public/common/content_switches.h"
  17 #include "jni/ChildProcessLauncher_jni.h"
  18 #include "media/base/android/media_player_android.h"
  19 #include "ui/gl/android/scoped_java_surface.h"
  20
  21 using base::android::AttachCurrentThread;
  22 using base::android::ToJavaArrayOfStrings;
  23 using base::android::ScopedJavaGlobalRef;
  24 using base::android::ScopedJavaLocalRef;
  25 using content::StartChildProcessCallback;
  26
  27 namespace content {
  28
  29 namespace {
  30
  31 // Pass a java surface object to the MediaPlayerAndroid object
  32 // identified by render process handle, render view ID and player ID.
  33 static void SetSurfacePeer(
  34     const base::android::JavaRef<jobject>& surface,
  35     base::ProcessHandle render_process_handle,
  36     int render_view_id,
  37     int player_id) {
  38   int renderer_id = 0;
  39   RenderProcessHost::iterator it = RenderProcessHost::AllHostsIterator();
  40   while (!it.IsAtEnd()) {
  41     if (it.GetCurrentValue()->GetHandle() == render_process_handle) {
  42       renderer_id = it.GetCurrentValue()->GetID();
  43       break;
  44     }
  45     it.Advance();
  46   }
  47
  48   if (renderer_id) {
  49     RenderViewHostImpl* host = RenderViewHostImpl::FromID(
  50         renderer_id, render_view_id);
  51     if (host) {
  52       media::MediaPlayerAndroid* player =
  53           host->media_player_manager()->GetPlayer(player_id);
  54       if (player &&
  55           player != host->media_player_manager()->GetFullscreenPlayer()) {
  56         gfx::ScopedJavaSurface scoped_surface(surface);
  57         player->SetVideoSurface(scoped_surface.Pass());
  58       }
  59     }
  60   }
  61 }
  62
  63 }  // anonymous namespace
  64
  65 // Called from ChildProcessLauncher.java when the ChildProcess was
  66 // started.
  67 // |client_context| is the pointer to StartChildProcessCallback which was
  68 // passed in from StartChildProcess.
  69 // |handle| is the processID of the child process as originated in Java, 0 if
  70 // the ChildProcess could not be created.
  71 static void OnChildProcessStarted(JNIEnv*,
  72                                   jclass,
  73                                   jlong client_context,
  74                                   jint handle) {
  75   StartChildProcessCallback* callback =
  76       reinterpret_cast<StartChildProcessCallback*>(client_context);
  77   if (handle)
  78     callback->Run(static_cast<base::ProcessHandle>(handle));
  79   delete callback;
  80 }
  81
  82 void StartChildProcess(
  83     const CommandLine::StringVector& argv,
  84     int child_process_id,
  85     const std::vector<content::FileDescriptorInfo>& files_to_register,
  86     const StartChildProcessCallback& callback) {
  87   JNIEnv* env = AttachCurrentThread();
  88   DCHECK(env);
  89
  90   // Create the Command line String[]
  91   ScopedJavaLocalRef<jobjectArray> j_argv = ToJavaArrayOfStrings(env, argv);
  92
  93   size_t file_count = files_to_register.size();
  94   DCHECK(file_count > 0);
  95
  96   ScopedJavaLocalRef<jintArray> j_file_ids(env, env->NewIntArray(file_count));
  97   base::android::CheckException(env);
  98   jint* file_ids = env->GetIntArrayElements(j_file_ids.obj(), NULL);
  99   base::android::CheckException(env);
 100   ScopedJavaLocalRef<jintArray> j_file_fds(env, env->NewIntArray(file_count));
 101   base::android::CheckException(env);
 102   jint* file_fds = env->GetIntArrayElements(j_file_fds.obj(), NULL);
 103   base::android::CheckException(env);
 104   ScopedJavaLocalRef<jbooleanArray> j_file_auto_close(
 105       env, env->NewBooleanArray(file_count));
 106   base::android::CheckException(env);
 107   jboolean* file_auto_close =
 108       env->GetBooleanArrayElements(j_file_auto_close.obj(), NULL);
 109   base::android::CheckException(env);
 110   for (size_t i = 0; i < file_count; ++i) {
 111     const content::FileDescriptorInfo& fd_info = files_to_register[i];
 112     file_ids[i] = fd_info.id;
 113     file_fds[i] = fd_info.fd.fd;
 114     file_auto_close[i] = fd_info.fd.auto_close;
 115   }
 116   env->ReleaseIntArrayElements(j_file_ids.obj(), file_ids, 0);
 117   env->ReleaseIntArrayElements(j_file_fds.obj(), file_fds, 0);
 118   env->ReleaseBooleanArrayElements(j_file_auto_close.obj(), file_auto_close, 0);
 119
 120   Java_ChildProcessLauncher_start(env,
 121       base::android::GetApplicationContext(),
 122       j_argv.obj(),
 123       child_process_id,
 124       j_file_ids.obj(),
 125       j_file_fds.obj(),
 126       j_file_auto_close.obj(),
 127       reinterpret_cast<intptr_t>(new StartChildProcessCallback(callback)));
 128 }
 129
 130 void StopChildProcess(base::ProcessHandle handle) {
 131   JNIEnv* env = AttachCurrentThread();
 132   DCHECK(env);
 133   Java_ChildProcessLauncher_stop(env, static_cast<jint>(handle));
 134 }
 135
 136 bool IsChildProcessOomProtected(base::ProcessHandle handle) {
 137   JNIEnv* env = AttachCurrentThread();
 138   DCHECK(env);
 139   return Java_ChildProcessLauncher_isOomProtected(env,
 140       static_cast<jint>(handle));
 141 }
 142
 143 void SetChildProcessInForeground(base::ProcessHandle handle,
 144     bool in_foreground) {
 145   JNIEnv* env = AttachCurrentThread();
 146   DCHECK(env);
 147   return Java_ChildProcessLauncher_setInForeground(env,
 148       static_cast<jint>(handle), static_cast<jboolean>(in_foreground));
 149 }
 150
 151 void EstablishSurfacePeer(
 152     JNIEnv* env, jclass clazz,
 153     jint pid, jobject surface, jint primary_id, jint secondary_id) {
 154   ScopedJavaGlobalRef<jobject> jsurface;
 155   jsurface.Reset(env, surface);
 156   if (jsurface.is_null())
 157     return;
 158
 159   DCHECK(!BrowserThread::CurrentlyOn(BrowserThread::UI));
 160   BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, base::Bind(
 161       &SetSurfacePeer, jsurface, pid, primary_id, secondary_id));
 162 }
 163
 164 void RegisterViewSurface(int surface_id, jobject j_surface) {
 165   JNIEnv* env = AttachCurrentThread();
 166   DCHECK(env);
 167   Java_ChildProcessLauncher_registerViewSurface(env, surface_id, j_surface);
 168 }
 169
 170 void UnregisterViewSurface(int surface_id) {
 171   JNIEnv* env = AttachCurrentThread();
 172   DCHECK(env);
 173   Java_ChildProcessLauncher_unregisterViewSurface(env, surface_id);
 174 }
 175
 176 void RegisterChildProcessSurfaceTexture(int surface_texture_id,
 177                                         int child_process_id,
 178                                         jobject j_surface_texture) {
 179   JNIEnv* env = AttachCurrentThread();
 180   DCHECK(env);
 181   Java_ChildProcessLauncher_registerSurfaceTexture(
 182       env, surface_texture_id, child_process_id, j_surface_texture);
 183 }
 184
 185 void UnregisterChildProcessSurfaceTexture(int surface_texture_id,
 186                                           int child_process_id) {
 187   JNIEnv* env = AttachCurrentThread();
 188   DCHECK(env);
 189   Java_ChildProcessLauncher_unregisterSurfaceTexture(
 190       env, surface_texture_id, child_process_id);
 191 }
 192
 193 jboolean IsSingleProcess(JNIEnv* env, jclass clazz) {
 194   return CommandLine::ForCurrentProcess()->HasSwitch(switches::kSingleProcess);
 195 }
 196
 197 bool RegisterChildProcessLauncher(JNIEnv* env) {
 198   return RegisterNativesImpl(env);
 199 }
 200
 201 }  // namespace content