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