Index: chrome/browser/media/encrypted_media_message_filter_android.cc |
diff --git a/chrome/browser/media/encrypted_media_message_filter_android.cc b/chrome/browser/media/encrypted_media_message_filter_android.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..71ad564351ec37c9396799106e574e718feeb407 |
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+++ b/chrome/browser/media/encrypted_media_message_filter_android.cc |
@@ -0,0 +1,91 @@ |
+// 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 "chrome/browser/media/encrypted_media_message_filter_android.h" |
+ |
+#include <string> |
+ |
+#include "chrome/common/encrypted_media_messages_android.h" |
+#include "ipc/ipc_message_macros.h" |
+#include "media/base/android/media_codec_bridge.h" |
+#include "media/base/android/media_drm_bridge.h" |
+ |
+using content::BrowserThread; |
+using media::MediaCodecBridge; |
+using media::MediaDrmBridge; |
+ |
+namespace chrome { |
+ |
+// Check whether the available codecs are supported. |
+static android::SupportedCodecs GetSupportedCodecs( |
+ android::SupportedCodecs requested_codecs, |
+ bool video_must_be_compositable) { |
+ android::SupportedCodecs supported_codecs = android::NO_SUPPORTED_CODECS; |
+ // TODO(qinmin): Remove this DCHECK and query VP8/Vorbis capabilities |
+ // once webm support is added to Android. |
+ DCHECK(!(requested_codecs & android::WEBM_VP8_AND_VORBIS)); |
+ |
+#if defined(USE_PROPRIETARY_CODECS) |
+ if ((requested_codecs & android::MP4_AAC) && |
+ MediaCodecBridge::CanDecode("mp4a", false)) { |
+ supported_codecs = static_cast<android::SupportedCodecs>( |
+ supported_codecs | android::MP4_AAC); |
+ } |
+ |
+ // TODO(qinmin): Remove the composition logic when secure contents can be |
+ // composited. |
+ if ((requested_codecs & android::MP4_AVC1) && |
+ MediaCodecBridge::CanDecode("avc1", !video_must_be_compositable)) { |
+ supported_codecs = static_cast<android::SupportedCodecs>( |
+ supported_codecs | android::MP4_AVC1); |
+ } |
+#endif // defined(USE_PROPRIETARY_CODECS) |
+ |
+ return supported_codecs; |
+} |
+ |
+EncryptedMediaMessageFilterAndroid::EncryptedMediaMessageFilterAndroid() {} |
+ |
+EncryptedMediaMessageFilterAndroid::~EncryptedMediaMessageFilterAndroid() {} |
+ |
+bool EncryptedMediaMessageFilterAndroid::OnMessageReceived( |
+ const IPC::Message& message, bool* message_was_ok) { |
+ bool handled = true; |
+ IPC_BEGIN_MESSAGE_MAP_EX( |
+ EncryptedMediaMessageFilterAndroid, message, *message_was_ok) |
+ IPC_MESSAGE_HANDLER(ChromeViewHostMsg_GetSupportedKeySystems, |
+ OnGetSupportedKeySystems) |
+ IPC_MESSAGE_UNHANDLED(handled = false) |
+ IPC_END_MESSAGE_MAP_EX() |
+ return handled; |
+} |
+ |
+void EncryptedMediaMessageFilterAndroid::OverrideThreadForMessage( |
+ const IPC::Message& message, BrowserThread::ID* thread) { |
+ // Move the IPC handling to FILE thread as it is not very cheap. |
+ if (message.type() == ChromeViewHostMsg_GetSupportedKeySystems::ID) |
+ *thread = BrowserThread::FILE; |
+} |
+ |
+void EncryptedMediaMessageFilterAndroid::OnGetSupportedKeySystems( |
+ const android::SupportedKeySystemRequest& request, |
+ android::SupportedKeySystemResponse* response) { |
+ if (!MediaDrmBridge::IsAvailable() || !MediaCodecBridge::IsAvailable()) |
+ return; |
+ |
+ // TODO(qinmin): Convert codecs to container types and check whether they |
+ // are supported with the key system. |
+ if (!MediaDrmBridge::IsCryptoSchemeSupported(request.uuid, "")) |
+ return; |
+ |
+ DCHECK_EQ(request.codecs >> 3, 0) << "unrecognized codec"; |
+ response->uuid = request.uuid; |
+ // TODO(qinmin): check composition is supported or not. |
+ response->compositing_codecs = |
+ GetSupportedCodecs(request.codecs, true); |
+ response->non_compositing_codecs = |
+ GetSupportedCodecs(request.codecs, false); |
+} |
+ |
+} // namespace chrome |