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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "chrome/browser/media/encrypted_media_message_filter_android.h" |
| 6 |
| 7 #include <string> |
| 8 |
| 9 #include "chrome/common/encrypted_media_messages_android.h" |
| 10 #include "ipc/ipc_message_macros.h" |
| 11 #include "media/base/android/media_codec_bridge.h" |
| 12 #include "media/base/android/media_drm_bridge.h" |
| 13 |
| 14 using content::BrowserThread; |
| 15 using media::MediaCodecBridge; |
| 16 using media::MediaDrmBridge; |
| 17 |
| 18 namespace chrome { |
| 19 |
| 20 // Check whether the available codecs are supported. |
| 21 static android::SupportedCodecs GetSupportedCodecs( |
| 22 android::SupportedCodecs requested_codecs, |
| 23 bool video_must_be_compositable) { |
| 24 android::SupportedCodecs supported_codecs = android::NO_SUPPORTED_CODECS; |
| 25 // TODO(qinmin): Remove this DCHECK and query VP8/Vorbis capabilities |
| 26 // once webm support is added to Android. |
| 27 DCHECK(!(requested_codecs & android::WEBM_VP8_AND_VORBIS)); |
| 28 |
| 29 #if defined(USE_PROPRIETARY_CODECS) |
| 30 if ((requested_codecs & android::MP4_AAC) && |
| 31 MediaCodecBridge::CanDecode("mp4a", false)) { |
| 32 supported_codecs = static_cast<android::SupportedCodecs>( |
| 33 supported_codecs | android::MP4_AAC); |
| 34 } |
| 35 |
| 36 // TODO(qinmin): Remove the composition logic when secure contents can be |
| 37 // composited. |
| 38 if ((requested_codecs & android::MP4_AVC1) && |
| 39 MediaCodecBridge::CanDecode("avc1", !video_must_be_compositable)) { |
| 40 supported_codecs = static_cast<android::SupportedCodecs>( |
| 41 supported_codecs | android::MP4_AVC1); |
| 42 } |
| 43 #endif // defined(USE_PROPRIETARY_CODECS) |
| 44 |
| 45 return supported_codecs; |
| 46 } |
| 47 |
| 48 EncryptedMediaMessageFilterAndroid::EncryptedMediaMessageFilterAndroid() {} |
| 49 |
| 50 EncryptedMediaMessageFilterAndroid::~EncryptedMediaMessageFilterAndroid() {} |
| 51 |
| 52 bool EncryptedMediaMessageFilterAndroid::OnMessageReceived( |
| 53 const IPC::Message& message, bool* message_was_ok) { |
| 54 bool handled = true; |
| 55 IPC_BEGIN_MESSAGE_MAP_EX( |
| 56 EncryptedMediaMessageFilterAndroid, message, *message_was_ok) |
| 57 IPC_MESSAGE_HANDLER(ChromeViewHostMsg_GetSupportedKeySystems, |
| 58 OnGetSupportedKeySystems) |
| 59 IPC_MESSAGE_UNHANDLED(handled = false) |
| 60 IPC_END_MESSAGE_MAP_EX() |
| 61 return handled; |
| 62 } |
| 63 |
| 64 void EncryptedMediaMessageFilterAndroid::OverrideThreadForMessage( |
| 65 const IPC::Message& message, BrowserThread::ID* thread) { |
| 66 // Move the IPC handling to FILE thread as it is not very cheap. |
| 67 if (message.type() == ChromeViewHostMsg_GetSupportedKeySystems::ID) |
| 68 *thread = BrowserThread::FILE; |
| 69 } |
| 70 |
| 71 void EncryptedMediaMessageFilterAndroid::OnGetSupportedKeySystems( |
| 72 const android::SupportedKeySystemRequest& request, |
| 73 android::SupportedKeySystemResponse* response) { |
| 74 if (!MediaDrmBridge::IsAvailable() || !MediaCodecBridge::IsAvailable()) |
| 75 return; |
| 76 |
| 77 // TODO(qinmin): Convert codecs to container types and check whether they |
| 78 // are supported with the key system. |
| 79 if (!MediaDrmBridge::IsCryptoSchemeSupported(request.uuid, "")) |
| 80 return; |
| 81 |
| 82 DCHECK_EQ(request.codecs >> 3, 0) << "unrecognized codec"; |
| 83 response->uuid = request.uuid; |
| 84 // TODO(qinmin): check composition is supported or not. |
| 85 response->compositing_codecs = |
| 86 GetSupportedCodecs(request.codecs, true); |
| 87 response->non_compositing_codecs = |
| 88 GetSupportedCodecs(request.codecs, false); |
| 89 } |
| 90 |
| 91 } // namespace chrome |
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