Adds initial key systems support for Chromecast.

chromecast/shell/renderer/key_systems_cast.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 "chromecast/shell/renderer/key_systems_cast.h"
+
+#include <string>
+
+#include "base/command_line.h"
+#include "base/logging.h"
+#include "chromecast/media/base/key_systems_common.h"
+#include "components/cdm/renderer/widevine_key_systems.h"
+#include "content/public/common/eme_codec.h"
+
+#include "widevine_cdm_version.h" // In SHARED_INTERMEDIATE_DIR.
+
+using content::KeySystemInfo;
+
+namespace {
+
+void AddKeySystemWithCodecs(
+    const std::string& key_system_name,
+    std::vector<KeySystemInfo>* concrete_key_systems) {
+  KeySystemInfo info(key_system_name);
+  info.supported_codecs = content::EME_CODEC_MP4_ALL;
+  concrete_key_systems->push_back(info);
+}
+
+}  // namespace
+
+namespace chromecast {
+namespace shell {
+
+void AddChromecastKeySystems(std::vector<KeySystemInfo>* key_systems_info) {
+  // Chromecast supports using "org.w3.clearkey" with webkitGenerateKeyRequest,
+  // which key_systems.cc rewrites to "unsupported-org.w3.clearkey".
+  // TODO(gunsch): remove this after moving to EMEv2.

[ddorwin, 2014/09/15 22:50:53]

ditto on v2

[gunsch, 2014/09/16 16:58:00]

Done.

+  // See: crbug/393397

[ddorwin, 2014/09/15 22:50:53]

I don't think this bug addresses the clear key naming issue.

[gunsch, 2014/09/16 16:58:00]

Done.

+  AddKeySystemWithCodecs(kUnsupportedClearKeySystem, key_systems_info);
+
+#if defined(WIDEVINE_CDM_AVAILABLE)
+  AddWidevineWithCodecs(cdm::WIDEVINE,
+                        content::EME_CODEC_MP4_ALL,
+                        key_systems_info);
+#endif
+
+#if defined(PLAYREADY_CDM_AVAILABLE)
+  for (size_t i = 0; kPlayreadyKeySystems[i] != NULL; i++) {
+    AddKeySystemWithCodecs(kPlayreadyKeySystems[i], key_systems_info);
+  }
+#endif
+}
+
+}  // namespace shell
+}  // namespace chromecast