content/media/omx/mediaresourcemanager/MediaResourceManagerService.h@8bccb770b82d (annotated)
content/media/omx/mediaresourcemanager/MediaResourceManagerService.h
Wed, 31 Dec 2014 13:27:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 13:27:57 +0100
- branch
- TOR_BUG_3246
- changeset 6
- 8bccb770b82d
- permissions
- -rw-r--r--
Ignore runtime configuration files generated during quality assurance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* vim:set ts=2 sw=2 sts=2 et cindent: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this file, |
| michael@0 | 5 | * You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | #ifndef ANDROID_MEDIARESOURCEMANAGERSERVICE_H |
| michael@0 | 8 | #define ANDROID_MEDIARESOURCEMANAGERSERVICE_H |
| michael@0 | 9 | |
| michael@0 | 10 | #include <media/stagefright/foundation/ABase.h> |
| michael@0 | 11 | #include <media/stagefright/foundation/AHandlerReflector.h> |
| michael@0 | 12 | #include <media/stagefright/foundation/ALooper.h> |
| michael@0 | 13 | #include <utils/List.h> |
| michael@0 | 14 | #include <utils/RefBase.h> |
| michael@0 | 15 | |
| michael@0 | 16 | #include "IMediaResourceManagerClient.h" |
| michael@0 | 17 | #include "IMediaResourceManagerService.h" |
| michael@0 | 18 | |
| michael@0 | 19 | namespace android { |
| michael@0 | 20 | |
| michael@0 | 21 | /** |
| michael@0 | 22 | * Manage permissions of using media resources(hw decoder, hw encoder, camera) |
| michael@0 | 23 | * XXX Current implementaion support only one hw video decoder. |
| michael@0 | 24 | * Need to extend to support multiple instance and other resources. |
| michael@0 | 25 | */ |
| michael@0 | 26 | class MediaResourceManagerService: public BnMediaResourceManagerService, |
| michael@0 | 27 | public IBinder::DeathRecipient |
| michael@0 | 28 | { |
| michael@0 | 29 | public: |
| michael@0 | 30 | // The maximum number of hardware decoders available. |
| michael@0 | 31 | enum { VIDEO_DECODER_COUNT = 1 }; |
| michael@0 | 32 | |
| michael@0 | 33 | enum { |
| michael@0 | 34 | kNotifyRequest = 'noti' |
| michael@0 | 35 | }; |
| michael@0 | 36 | |
| michael@0 | 37 | // Instantiate MediaResourceManagerService and register to service manager. |
| michael@0 | 38 | // If service manager is not present, wait until service manager becomes present. |
| michael@0 | 39 | static void instantiate(); |
| michael@0 | 40 | |
| michael@0 | 41 | // DeathRecipient |
| michael@0 | 42 | virtual void binderDied(const wp<IBinder>& who); |
| michael@0 | 43 | |
| michael@0 | 44 | // derived from IMediaResourceManagerService |
| michael@0 | 45 | virtual void requestMediaResource(const sp<IMediaResourceManagerClient>& client, int resourceType); |
| michael@0 | 46 | virtual status_t cancelClient(const sp<IMediaResourceManagerClient>& client); |
| michael@0 | 47 | |
| michael@0 | 48 | // Receive a message from AHandlerReflector. |
| michael@0 | 49 | // Called on ALooper thread. |
| michael@0 | 50 | void onMessageReceived(const sp<AMessage> &msg); |
| michael@0 | 51 | |
| michael@0 | 52 | protected: |
| michael@0 | 53 | MediaResourceManagerService(); |
| michael@0 | 54 | virtual ~MediaResourceManagerService(); |
| michael@0 | 55 | |
| michael@0 | 56 | protected: |
| michael@0 | 57 | // Represent a media resouce. |
| michael@0 | 58 | // Hold a IMediaResourceManagerClient that got a media resource as IBinder. |
| michael@0 | 59 | struct ResourceSlot { |
| michael@0 | 60 | ResourceSlot () |
| michael@0 | 61 | { |
| michael@0 | 62 | } |
| michael@0 | 63 | sp<IBinder> mClient; |
| michael@0 | 64 | }; |
| michael@0 | 65 | |
| michael@0 | 66 | void cancelClientLocked(const sp<IBinder>& binder); |
| michael@0 | 67 | |
| michael@0 | 68 | // mVideoDecoderSlots is the array of slots that represent a media resource. |
| michael@0 | 69 | ResourceSlot mVideoDecoderSlots[VIDEO_DECODER_COUNT]; |
| michael@0 | 70 | // The maximum number of hardware decoders available on the device. |
| michael@0 | 71 | int mVideoDecoderCount; |
| michael@0 | 72 | |
| michael@0 | 73 | // The lock protects mVideoDecoderSlots and mVideoCodecRequestQueue called |
| michael@0 | 74 | // from multiple threads. |
| michael@0 | 75 | Mutex mLock; |
| michael@0 | 76 | typedef List<sp<IBinder> > Fifo; |
| michael@0 | 77 | // Queue of media resource requests. |
| michael@0 | 78 | // Hold IMediaResourceManagerClient that requesting a media resource as IBinder. |
| michael@0 | 79 | Fifo mVideoCodecRequestQueue; |
| michael@0 | 80 | |
| michael@0 | 81 | // ALooper is a message loop used in stagefright. |
| michael@0 | 82 | // It creates a thread for messages and handles messages in the thread. |
| michael@0 | 83 | // ALooper is a clone of Looper in android Java. |
| michael@0 | 84 | // http://developer.android.com/reference/android/os/Looper.html |
| michael@0 | 85 | sp<ALooper> mLooper; |
| michael@0 | 86 | // deliver a message to a wrapped object(OmxDecoder). |
| michael@0 | 87 | // AHandlerReflector is similar to Handler in android Java. |
| michael@0 | 88 | // http://developer.android.com/reference/android/os/Handler.html |
| michael@0 | 89 | sp<AHandlerReflector<MediaResourceManagerService> > mReflector; |
| michael@0 | 90 | |
| michael@0 | 91 | }; |
| michael@0 | 92 | |
| michael@0 | 93 | }; // namespace android |
| michael@0 | 94 | |
| michael@0 | 95 | #endif // ANDROID_MEDIARESOURCEMANAGERSERVICE_H |
