Cleanups in the video encoding decoding code. Reenable VP8.

remoting/host/simple_host_process.cc

 // Copyright (c) 2010 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.
 //
 // This is an application of a minimal host process in a Chromoting
 // system. It serves the purpose of gluing different pieces together
 // to make a functional host process for testing.
 //
 // It peforms the following functionality:
 // 1. Connect to the GTalk network and register the machine as a host.
 // 2. Accepts connection through libjingle.
 // 3. Receive mouse / keyboard events through libjingle.
 // 4. Sends screen capture through libjingle.
 
 #include <iostream>
 #include <string>
 #include <stdlib.h>
 
 #include "build/build_config.h"
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/file_path.h"
 #include "base/logging.h"
 #include "base/mac/scoped_nsautorelease_pool.h"
 #include "base/nss_util.h"
+#include "base/path_service.h"
 #include "base/thread.h"
+#include "media/base/media.h"
 #include "remoting/base/encoder_verbatim.h"
+#include "remoting/base/encoder_vp8.h"
 #include "remoting/base/encoder_zlib.h"
+#include "remoting/base/tracer.h"
 #include "remoting/host/capturer_fake.h"
 #include "remoting/host/chromoting_host.h"
 #include "remoting/host/chromoting_host_context.h"
 #include "remoting/host/json_host_config.h"
-#include "remoting/base/tracer.h"
+#include "remoting/proto/video.pb.h"
 
 #if defined(OS_WIN)
 #include "remoting/host/capturer_gdi.h"
 #include "remoting/host/event_executor_win.h"
 #elif defined(OS_LINUX)
 #include "remoting/host/capturer_linux.h"
 #include "remoting/host/event_executor_linux.h"
 #elif defined(OS_MACOSX)
 #include "remoting/host/capturer_mac.h"
 #include "remoting/host/event_executor_mac.h"
 #endif
 
 #if defined(OS_WIN)
 const std::wstring kDefaultConfigPath = L".ChromotingConfig.json";
 const wchar_t kHomeDrive[] = L"HOMEDRIVE";
 const wchar_t kHomePath[] = L"HOMEPATH";
 const wchar_t* GetEnvironmentVar(const wchar_t* x) { return _wgetenv(x); }
 #else
 const std::string kDefaultConfigPath = ".ChromotingConfig.json";
 static char* GetEnvironmentVar(const char* x) { return getenv(x); }
 #endif
 
 void ShutdownTask(MessageLoop* message_loop) {
   message_loop->PostTask(FROM_HERE, new MessageLoop::QuitTask());
 }
 
 const std::string kFakeSwitchName = "fake";
 const std::string kConfigSwitchName = "config";
 const std::string kVerbatimSwitchName = "verbatim";
+const std::string kVp8SwitchName = "vp8";
 
 int main(int argc, char** argv) {
   // Needed for the Mac, so we don't leak objects when threads are created.
   base::mac::ScopedNSAutoreleasePool pool;
 
   CommandLine::Init(argc, argv);
   const CommandLine* cmd_line = CommandLine::ForCurrentProcess();
 
   base::AtExitManager exit_manager;
 
@@ skipping 10 matching lines @@
   event_handler.reset(new remoting::EventExecutorLinux(capturer.get()));
 #elif defined(OS_MACOSX)
   capturer.reset(new remoting::CapturerMac());
   event_handler.reset(new remoting::EventExecutorMac(capturer.get()));
 #endif
   encoder.reset(new remoting::EncoderZlib());
 
   // Check the argument to see if we should use a fake capturer and encoder.
   bool fake = cmd_line->HasSwitch(kFakeSwitchName);
   bool verbatim = cmd_line->HasSwitch(kVerbatimSwitchName);
+  bool vp8 = cmd_line->HasSwitch(kVp8SwitchName);
 
 #if defined(OS_WIN)
-  std::wstring path = GetEnvironmentVar(kHomeDrive);
-  path += GetEnvironmentVar(kHomePath);
+  std::wstring home_path = GetEnvironmentVar(kHomeDrive);
+  home_path += GetEnvironmentVar(kHomePath);
 #else
-  std::string path = GetEnvironmentVar(base::env_vars::kHome);
+  std::string home_path = GetEnvironmentVar(base::env_vars::kHome);
 #endif
-  FilePath config_path(path);
+  FilePath config_path(home_path);
   config_path = config_path.Append(kDefaultConfigPath);
   if (cmd_line->HasSwitch(kConfigSwitchName)) {
     config_path = cmd_line->GetSwitchValuePath(kConfigSwitchName);
   }
 
   if (fake) {
     // Inject a fake capturer.
     LOG(INFO) << "Using a fake capturer.";
     capturer.reset(new remoting::CapturerFake());
   }
 
   if (verbatim) {
     LOG(INFO) << "Using the verbatim encoder.";
     encoder.reset(new remoting::EncoderVerbatim());
   }
 
+  // TODO(sergeyu): Enable VP8 on ARM builds.
+#if !defined(ARCH_CPU_ARM_FAMILY)
+  if (vp8) {
+    LOG(INFO) << "Using the verbatim encoder.";
+    encoder.reset(new remoting::EncoderVp8());
+  }
+#endif
+
   base::Thread file_io_thread("FileIO");
   file_io_thread.Start();
 
   scoped_refptr<remoting::JsonHostConfig> config(
       new remoting::JsonHostConfig(
           config_path, file_io_thread.message_loop_proxy()));
 
   if (!config->Read()) {
     LOG(ERROR) << "Failed to read configuration file " << config_path.value();
     return 1;
   }
 
   // Allocate a chromoting context and starts it.
   remoting::ChromotingHostContext context;
   context.Start();
 
+  FilePath module_path;
+  PathService::Get(base::DIR_MODULE, &module_path);
+  CHECK(media::InitializeMediaLibrary(module_path))
+      << "Cannot load media library";
+
   // Construct a chromoting host.
   scoped_refptr<remoting::ChromotingHost> host(
       new remoting::ChromotingHost(&context,
                                    config,
                                    capturer.release(),
                                    encoder.release(),
                                    event_handler.release()));
 
   // Let the chromoting host run until the shutdown task is executed.
   MessageLoop message_loop(MessageLoop::TYPE_UI);
   host->Start(NewRunnableFunction(&ShutdownTask, &message_loop));
   message_loop.Run();
 
   // And then stop the chromoting context.
   context.Stop();
   file_io_thread.Stop();
   return 0;
 }