Adds MediaClientAndroid to support embedder/MediaDrmBridge interaction.

chromecast/browser/media/cast_media_client_android.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 "chromecast/browser/media/cast_media_client_android.h"
+
+#include <utility>
+
+#include "base/stl_util.h"
+#include "chromecast/media/base/key_systems_common.h"
+#include "chromecast/media/cdm/playready_drm_delegate_android.h"
+#include "components/cdm/browser/widevine_drm_delegate_android.h"
+
+namespace chromecast {
+namespace media {
+
+CastMediaClientAndroid::CastMediaClientAndroid() {
+#if defined(PLAYREADY_CDM_AVAILABLE)
+  ::media::MediaDrmBridgeDelegate* playready_delegate =
+      new PlayreadyDrmDelegateAndroid;
+  mappings_.push_back(std::make_pair(kChromecastPlayreadyKeySystem,
+                                     playready_delegate->GetUUID()));
+  delegates_[playready_delegate->GetUUID()] = playready_delegate;
+#endif
+
+#if defined(WIDEVINE_CDM_AVAILABLE)
+  // Note: MediaDrmBridge adds the Widevine UUID mapping automatically.
+  delegates_[widevine_delegate->GetUUID()] =
+      new cdm::WidevineDrmDelegateAndroid;

[xhwang, 2015/04/24 04:52:23]

ditto about new Foo().

[gunsch, 2015/04/27 23:44:11]

Done.

+#endif
+
+  auto platform_mappings = GetPlatformKeySystemUUIDMappings();
+  mappings_.insert(mappings_.end(),
+                   platform_mappings.begin(),
+                   platform_mappings.end());
+}
+
+CastMediaClientAndroid::~CastMediaClientAndroid() {
+  STLDeleteContainerPairSecondPointers(delegates_.begin(), delegates_.end());

[xhwang, 2015/04/24 04:52:23]

If you use ScopedPtrHashMap, then you don't need to worry about deleting here,
and hash map would be more efficient than regular std::map when using vector as
keys (I guess).

[gunsch, 2015/04/27 23:44:12]

Unfortunately there's no hash function for std::vector, so I can't use a
base::hash_map (and thus ScopedPtrHashMap). Definitely would have preferred to.

[xhwang, 2015/04/28 05:25:11]

Acknowledged.

+}
+
+std::vector<std::pair<std::string, std::vector<uint8_t>>>
+CastMediaClientAndroid::GetKeySystemUUIDMappings() const {
+  return mappings_;
+}
+
+::media::MediaDrmBridgeDelegate*
+CastMediaClientAndroid::GetMediaDrmBridgeDelegate(
+    const std::vector<uint8_t>& scheme_uuid) const {
+  DelegateMap::const_iterator it = delegates_.find(scheme_uuid);
+  if (it == delegates_.end())
+    return nullptr;
+  return it->second;
+}
+
+}  // namespace media
+}  // namespace chromecast