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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef A_RTSP_CONTROLLER_H_
     18 
     19 #define A_RTSP_CONTROLLER_H_
     20 
     21 #include <media/stagefright/foundation/ABase.h>
     22 #include <media/stagefright/foundation/AHandlerReflector.h>
     23 #include <media/stagefright/MediaExtractor.h>
     24 
     25 namespace android {
     26 
     27 struct ALooper;
     28 struct MyHandler;
     29 
     30 struct ARTSPController : public MediaExtractor {
     31     ARTSPController(const sp<ALooper> &looper);
     32 
     33     void setUID(uid_t uid);
     34 
     35     status_t connect(const char *url);
     36     void disconnect();
     37 
     38     void seekAsync(int64_t timeUs, void (*seekDoneCb)(void *), void *cookie);
     39 
     40     virtual size_t countTracks();
     41     virtual sp<MediaSource> getTrack(size_t index);
     42 
     43     virtual sp<MetaData> getTrackMetaData(
     44             size_t index, uint32_t flags);
     45 
     46     int64_t getNormalPlayTimeUs();
     47     int64_t getQueueDurationUs(bool *eos);
     48 
     49     void onMessageReceived(const sp<AMessage> &msg);
     50 
     51     virtual uint32_t flags() const {
     52         // Seeking 10secs forward or backward is a very expensive operation
     53         // for rtsp, so let's not enable that.
     54         // The user can always use the seek bar.
     55 
     56         return CAN_PAUSE | CAN_SEEK;
     57     }
     58 
     59 protected:
     60     virtual ~ARTSPController();
     61 
     62 private:
     63     enum {
     64         kWhatConnectDone    = 'cdon',
     65         kWhatDisconnectDone = 'ddon',
     66         kWhatSeekDone       = 'sdon',
     67     };
     68 
     69     enum State {
     70         DISCONNECTED,
     71         CONNECTED,
     72         CONNECTING,
     73     };
     74 
     75     Mutex mLock;
     76     Condition mCondition;
     77 
     78     State mState;
     79     status_t mConnectionResult;
     80 
     81     sp<ALooper> mLooper;
     82     sp<MyHandler> mHandler;
     83     sp<AHandlerReflector<ARTSPController> > mReflector;
     84 
     85     bool mUIDValid;
     86     uid_t mUID;
     87 
     88     void (*mSeekDoneCb)(void *);
     89     void *mSeekDoneCookie;
     90     int64_t mLastSeekCompletedTimeUs;
     91 
     92     DISALLOW_EVIL_CONSTRUCTORS(ARTSPController);
     93 };
     94 
     95 }  // namespace android
     96 
     97 #endif  // A_RTSP_CONTROLLER_H_
     98