Motown: Add ActiveMultistreamSource model in preparation for the ffmpeg demux with async I/O

examples/media_test/media_test_app.cc

 // Copyright 2015 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 <deque>
 #include <iomanip>
 #include <iostream>
 
 #include "base/bind.h"
 #include "examples/media_test/keystroke.h"
@@ skipping 44 matching lines @@
 
     if (paint_) {
       std::cout << "    duration   <none>" << std::endl;
       std::cout << "    title      <none>" << std::endl;
       std::cout << "    artist     <none>" << std::endl;
       std::cout << "    album      <none>" << std::endl;
       std::cout << "    publisher  <none>" << std::endl;
       std::cout << "    genre      <none>" << std::endl;
       std::cout << "    composer   <none>" << std::endl << std::endl;
       std::cout << std::endl << std::endl << kUp << std::flush;
-    } else {
-      std::cout << std::endl;
     }
 
     CreateNewMediaTest();
     Poll();
   }
 
   bool ConfigureIncomingConnection(
       mojo::ApplicationConnection* connection) override {
     return true;
   }
@@ skipping 52 matching lines @@
       // Move the cursor up the terminal so we paint over the old metadata
       // (7 lines) a blank line and the state line (total of 9 lines).
       std::cout << kHome << kUp << kUp << kUp << kUp << kUp << kUp << kUp << kUp
                 << kUp;
     }
 
     if (!paint_ && metadata_shown_) {
       // Do nothing.
     } else if (metadata) {
       metadata_shown_ = true;
-      std::cout << "    duration   " << std::setprecision(1)
+      std::cout << "    duration   " << std::fixed << std::setprecision(1)
                 << double(metadata->duration) / ns_per_second << " seconds"
                 << clear_line() << std::endl;
       std::cout << "    title      "
                 << (metadata->title ? metadata->title : "<none>")
                 << clear_line() << std::endl;
       std::cout << "    artist     "
                 << (metadata->artist ? metadata->artist : "<none>")
                 << clear_line() << std::endl;
       std::cout << "    album      "
                 << (metadata->album ? metadata->album : "<none>")
                 << clear_line() << std::endl;
       std::cout << "    publisher  "
                 << (metadata->publisher ? metadata->publisher : "<none>")
                 << clear_line() << std::endl;
       std::cout << "    genre      "
                 << (metadata->genre ? metadata->genre : "<none>")
                 << clear_line() << std::endl;
       std::cout << "    composer   "
                 << (metadata->composer ? metadata->composer : "<none>")
                 << clear_line() << std::endl
                 << std::endl;
-    } else {
+    } else if (paint_) {
       std::cout << "    duration   <none>" << kClearLine << std::endl;
       std::cout << "    title      <none>" << kClearLine << std::endl;
       std::cout << "    artist     <none>" << kClearLine << std::endl;
       std::cout << "    album      <none>" << kClearLine << std::endl;
       std::cout << "    publisher  <none>" << kClearLine << std::endl;
       std::cout << "    genre      <none>" << kClearLine << std::endl;
       std::cout << "    composer   <none>" << kClearLine << std::endl;
       std::cout << std::endl;
     }
     std::cout << "    " << state_string() << clear_line() << std::endl;
@@ skipping 149 matching lines @@
 
 }  // namespace examples
 }  // namespace media
 }  // namespace mojo
 
 MojoResult MojoMain(MojoHandle application_request) {
   mojo::ApplicationRunnerChromium runner(
       new mojo::media::examples::MediaTestApp);
   return runner.Run(application_request);
 }