Register WideVine keysystem for WebView.

android_webview/renderer/aw_key_systems.cc

+// Copyright 2013 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 "android_webview/renderer/aw_key_systems.h"
+
+#include <string>
+
+#include "base/command_line.h"
+#include "base/logging.h"
+#include "base/strings/string_split.h"
+#include "media/base/media_switches.h"
+
+#include "widevine_cdm_version.h"  // In SHARED_INTERMEDIATE_DIR.
+
+using content::KeySystemInfo;
+
+const char kAudioWebM[] = "audio/webm";
+const char kVideoWebM[] = "video/webm";
+const char kVorbis[] = "vorbis";
+const char kVorbisVP8[] = "vorbis,vp8,vp8.0";
+
+const char kAudioMp4[] = "audio/mp4";
+const char kVideoMp4[] = "video/mp4";
+const char kMp4a[] = "mp4a";
+const char kMp4aAvc1Avc3[] = "mp4a,avc1,avc3";
+
+static const uint8 kWidevineUuid[16] = {

[joth, 2013/11/22 06:59:49]

there's 3 copies of this uuid already in the code, one with a TODO to move it
somewhere common. Seems time we did that :)

[ycheo (away), 2013/11/22 11:49:35]

I'll handle this in another CL.
Filed the bug: http://crbug.com/322464

+    0xED, 0xEF, 0x8B, 0xA9, 0x79, 0xD6, 0x4A, 0xCE,
+    0xA3, 0xC8, 0x27, 0xDC, 0xD5, 0x1D, 0x21, 0xED };
+
+// Return |name|'s parent key system.
+static std::string GetDirectParentName(std::string name) {

[joth, 2013/11/22 06:59:49]

pass as const&

(although I think you could get away with const char* here)

[ycheo (away), 2013/11/22 11:49:35]

Done.

+  int last_period = name.find_last_of('.');
+  DCHECK_GT(last_period, 0);
+  return name.substr(0, last_period);
+}
+
+static void AddWidevineWithCodecs(
+    const std::string& key_system_name,
+    std::vector<KeySystemInfo>* concrete_key_systems) {
+  KeySystemInfo info(key_system_name);
+
+  info.supported_types.push_back(std::make_pair(kAudioWebM, kVorbis));
+  info.supported_types.push_back(std::make_pair(kVideoWebM, kVorbisVP8));
+
+  info.supported_types.push_back(std::make_pair(kAudioMp4, kMp4a));
+  info.supported_types.push_back(std::make_pair(kVideoMp4, kMp4aAvc1Avc3));
+
+  info.uuid.assign(kWidevineUuid, kWidevineUuid + arraysize(kWidevineUuid));
+
+  concrete_key_systems->push_back(info);
+}
+
+void AwAddKeySystems(
+    std::vector<KeySystemInfo>* key_systems_info) {
+  // For standard Widevine, add parent name.
+  std::string standard_widevine = GetDirectParentName(kWidevineKeySystem);
+  AddWidevineWithCodecs(standard_widevine, key_systems_info);
+
+  if (CommandLine::ForCurrentProcess()
+      ->HasSwitch(switches::kMediaDrmEnableNonCompositing)) {
+    std::string widevine_hr_non_compositing = kWidevineKeySystem;
+    widevine_hr_non_compositing.append(".hrnoncompositing");
+    AddWidevineWithCodecs(widevine_hr_non_compositing, key_systems_info);
+  }
+}