media: Support creation and SetCdm() for mojo based CDM.

media/mojo/services/mojo_media_application.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
+#include "media/mojo/services/mojo_cdm_factory_service.h"
+#include "media/mojo/services/mojo_cdm_service_context.h"
 #include "media/mojo/services/mojo_renderer_service.h"
 #include "mojo/application/application_runner_chromium.h"
 #include "third_party/mojo/src/mojo/public/c/system/main.h"
 #include "third_party/mojo/src/mojo/public/cpp/application/application_connection.h"
 #include "third_party/mojo/src/mojo/public/cpp/application/application_delegate.h"
 #include "third_party/mojo/src/mojo/public/cpp/application/application_impl.h"
 #include "third_party/mojo/src/mojo/public/cpp/application/interface_factory_impl.h"
 
 namespace media {
 
+static void EnableLoggingFromArgs(const std::vector<std::string>& args) {
+  base::CommandLine::StringVector command_line_args;
+#if defined(OS_WIN)
+  for (const auto& arg : args)
+    command_line_args.push_back(base::UTF8ToUTF16(arg));
+#elif defined(OS_POSIX)
+  command_line_args = args;
+#endif
+
+  base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
+  command_line->InitFromArgv(command_line_args);

[ddorwin, 2015/05/15 19:10:07]

What is all this command line stuff used for? The following code doesn't appear
to be based on |args|.

+
+  logging::LoggingSettings settings;
+  settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
+  logging::InitLogging(settings);
+  // Display process ID, thread ID and timestamp in logs.
+  logging::SetLogItems(true, true, true, false);
+}
+
+// mojo:media app that provides multiple media services.
 class MojoMediaApplication
     : public mojo::ApplicationDelegate,
+      public mojo::InterfaceFactory<mojo::ContentDecryptionModuleFactory>,
       public mojo::InterfaceFactory<mojo::MediaRenderer> {
  public:
   // mojo::ApplicationDelegate implementation.
-  void Initialize(mojo::ApplicationImpl* app) override {
-    base::CommandLine::StringVector command_line_args;
-#if defined(OS_WIN)
-    for (const auto& arg : app->args())
-      command_line_args.push_back(base::UTF8ToUTF16(arg));
-#elif defined(OS_POSIX)
-    command_line_args = app->args();
-#endif
-
-    base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
-    command_line->InitFromArgv(command_line_args);
-
-    logging::LoggingSettings settings;
-    settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
-    logging::InitLogging(settings);
-    // Display process ID, thread ID and timestamp in logs.
-    logging::SetLogItems(true, true, true, false);
+  void Initialize(mojo::ApplicationImpl* app) final {
+    EnableLoggingFromArgs(app->args());
   }
 
   bool ConfigureIncomingConnection(
-      mojo::ApplicationConnection* connection) override {
-    connection->AddService(this);
+      mojo::ApplicationConnection* connection) final {
+    connection->AddService<mojo::ContentDecryptionModuleFactory>(this);
+    connection->AddService<mojo::MediaRenderer>(this);
     return true;
   }
 
+  // mojo::InterfaceFactory<mojo::ContentDecryptionModuleFactory>
+  // implementation.
+  void Create(mojo::ApplicationConnection* connection,
+              mojo::InterfaceRequest<mojo::ContentDecryptionModuleFactory>
+                  request) final {
+    mojo::BindToRequest(new MojoCdmFactoryService(&cdm_service_context_),
+                        &request);
+  }
+
   // mojo::InterfaceFactory<mojo::MediaRenderer> implementation.
   void Create(mojo::ApplicationConnection* connection,
-              mojo::InterfaceRequest<mojo::MediaRenderer> request) override {
-    mojo::BindToRequest(new MojoRendererService(), &request);
+              mojo::InterfaceRequest<mojo::MediaRenderer> request) final {
+    mojo::BindToRequest(new MojoRendererService(&cdm_service_context_),
+                        &request);
   }
+
+ private:
+  MojoCdmServiceContext cdm_service_context_;
 };
 
 }  // namespace media
 
 MojoResult MojoMain(MojoHandle mojo_handle) {
   mojo::ApplicationRunnerChromium runner(new media::MojoMediaApplication());
   return runner.Run(mojo_handle);
 }