Media Remoting: Add remoting control logic for encrypted contents.

media/remoting/remoting_controller.cc

Index: media/remoting/remoting_controller.cc
diff --git a/media/remoting/remoting_controller.cc b/media/remoting/remoting_controller.cc
deleted file mode 100644
index dd38d70ff78f4760dd6b49a91de4aa2ca8c67d67..0000000000000000000000000000000000000000
--- a/media/remoting/remoting_controller.cc
+++ /dev/null
@@ -1,210 +0,0 @@
-// Copyright 2016 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 "media/remoting/remoting_controller.h"
-
-#include "base/bind.h"
-#include "base/logging.h"
-#include "base/single_thread_task_runner.h"
-
-namespace media {
-
-RemotingController::RemotingController(
-    mojom::RemotingSourceRequest source_request,
-    mojom::RemoterPtr remoter)
-    : binding_(this, std::move(source_request)),
-      remoter_(std::move(remoter)),
-      task_runner_(base::ThreadTaskRunnerHandle::Get()),
-      weak_factory_(this) {}
-
-RemotingController::~RemotingController() {}
-
-void RemotingController::OnSinkAvailable() {
-  DCHECK(task_runner_->BelongsToCurrentThread());
-
-  is_sink_available_ = true;
-  UpdateAndMaybeSwitch();
-}
-
-void RemotingController::OnSinkGone() {
-  DCHECK(task_runner_->BelongsToCurrentThread());
-
-  is_sink_available_ = false;
-  UpdateAndMaybeSwitch();
-}
-
-void RemotingController::OnStarted() {
-  DCHECK(task_runner_->BelongsToCurrentThread());
-
-  VLOG(1) << "Remoting started successively.";
-  if (is_remoting_)
-    switch_renderer_cb_.Run();
-  else
-    remoter_->Stop(mojom::RemotingStopReason::LOCAL_PLAYBACK);
-}
-
-void RemotingController::OnStartFailed(mojom::RemotingStartFailReason reason) {
-  DCHECK(task_runner_->BelongsToCurrentThread());
-
-  VLOG(1) << "Failed to start remoting:" << reason;
-  is_remoting_ = false;
-}
-
-void RemotingController::OnMessageFromSink(
-    const std::vector<uint8_t>& message) {
-  DCHECK(task_runner_->BelongsToCurrentThread());
-
-  // TODO(xjz): Merge with Eric's CL to handle the RPC messages here.
-  NOTIMPLEMENTED();
-}
-
-void RemotingController::OnStopped(mojom::RemotingStopReason reason) {
-  DCHECK(task_runner_->BelongsToCurrentThread());
-
-  VLOG(1) << "Remoting stopped: " << reason;
-  is_remoting_ = false;
-}
-
-void RemotingController::OnEnteredFullscreen() {
-  DCHECK(task_runner_->BelongsToCurrentThread());
-
-  is_fullscreen_ = true;
-  UpdateAndMaybeSwitch();
-}
-
-void RemotingController::OnExitedFullscreen() {
-  DCHECK(task_runner_->BelongsToCurrentThread());
-
-  is_fullscreen_ = false;
-  UpdateAndMaybeSwitch();
-}
-
-void RemotingController::OnSetCdm(CdmContext* cdm_context) {
-  DCHECK(task_runner_->BelongsToCurrentThread());
-
-  // TODO(xjz): Not implemented. Will add in up-coming change.
-  NOTIMPLEMENTED();
-}
-
-void RemotingController::SetSwitchRendererCallback(
-    const SwitchRendererCallback& cb) {
-  DCHECK(task_runner_->BelongsToCurrentThread());
-  DCHECK(!cb.is_null());
-
-  switch_renderer_cb_ = cb;
-}
-
-void RemotingController::OnMetadataChanged(const PipelineMetadata& metadata) {
-  DCHECK(task_runner_->BelongsToCurrentThread());
-
-  has_video_ = metadata.has_video;
-  has_audio_ = metadata.has_audio;
-  if (!has_video_ && !has_audio_)
-    return;
-
-  // On Android, when using the MediaPlayerRenderer, |has_video_| and
-  // |has_audio_| will be true, but the respective configs will be empty.
-  // We cannot make any assumptions on the validity of configs.
-  if (has_video_) {
-    video_decoder_config_ = metadata.video_decoder_config;
-    is_encrypted_ |= video_decoder_config_.is_encrypted();
-  }
-  if (has_audio_) {
-    audio_decoder_config_ = metadata.audio_decoder_config;
-    is_encrypted_ |= audio_decoder_config_.is_encrypted();
-  }
-  UpdateAndMaybeSwitch();
-}
-
-bool RemotingController::IsVideoCodecSupported() {
-  DCHECK(task_runner_->BelongsToCurrentThread());
-  DCHECK(has_video_);
-
-  switch (video_decoder_config_.codec()) {
-    case VideoCodec::kCodecH264:
-    case VideoCodec::kCodecVP8:
-      return true;
-    default:
-      VLOG(2) << "Remoting does not support video codec: "
-              << video_decoder_config_.codec();
-      return false;
-  }
-}
-
-bool RemotingController::IsAudioCodecSupported() {
-  DCHECK(task_runner_->BelongsToCurrentThread());
-  DCHECK(has_audio_);
-
-  switch (audio_decoder_config_.codec()) {
-    case AudioCodec::kCodecAAC:
-    case AudioCodec::kCodecMP3:
-    case AudioCodec::kCodecPCM:
-    case AudioCodec::kCodecVorbis:
-    case AudioCodec::kCodecFLAC:
-    case AudioCodec::kCodecAMR_NB:
-    case AudioCodec::kCodecAMR_WB:
-    case AudioCodec::kCodecPCM_MULAW:
-    case AudioCodec::kCodecGSM_MS:
-    case AudioCodec::kCodecPCM_S16BE:
-    case AudioCodec::kCodecPCM_S24BE:
-    case AudioCodec::kCodecOpus:
-    case AudioCodec::kCodecEAC3:
-    case AudioCodec::kCodecPCM_ALAW:
-    case AudioCodec::kCodecALAC:
-    case AudioCodec::kCodecAC3:
-      return true;
-    default:
-      VLOG(2) << "Remoting does not support audio codec: "
-              << audio_decoder_config_.codec();
-      return false;
-  }
-}
-
-bool RemotingController::ShouldBeRemoting() {
-  DCHECK(task_runner_->BelongsToCurrentThread());
-
-  // TODO(xjz): The control logic for EME will be added in a later CL.
-  if (is_encrypted_)
-    return false;
-
-  if (!is_sink_available_)
-    return false;
-  if (!is_fullscreen_)
-    return false;
-  if (has_video_ && !IsVideoCodecSupported())
-    return false;
-  if (has_audio_ && !IsAudioCodecSupported())
-    return false;
-  return true;
-}
-
-void RemotingController::UpdateAndMaybeSwitch() {
-  DCHECK(task_runner_->BelongsToCurrentThread());
-
-  // TODO(xjz): The switching logic for encrypted content will be added in a
-  // later CL.
-
-  // Demuxer is not initialized yet.
-  if (!has_audio_ && !has_video_)
-    return;
-
-  DCHECK(!switch_renderer_cb_.is_null());
-
-  bool should_be_remoting = ShouldBeRemoting();
-  if (is_remoting_ == should_be_remoting)
-    return;
-
-  // Switch between local and remoting.
-  is_remoting_ = should_be_remoting;
-  if (is_remoting_) {
-    // |swithc_renderer_cb_.Run()| will be called after remoting is started
-    // successfully.
-    remoter_->Start();
-  } else {
-    switch_renderer_cb_.Run();
-    remoter_->Stop(mojom::RemotingStopReason::LOCAL_PLAYBACK);
-  }
-}
-
-}  // namespace media