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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 ANDROID_ISTREAMSOURCE_H_
     18 
     19 #define ANDROID_ISTREAMSOURCE_H_
     20 
     21 #include <binder/IInterface.h>
     22 
     23 namespace android {
     24 
     25 struct AMessage;
     26 class IMemory;
     27 struct IStreamListener;
     28 
     29 struct IStreamSource : public IInterface {
     30     DECLARE_META_INTERFACE(StreamSource);
     31 
     32     virtual void setListener(const sp<IStreamListener> &listener) = 0;
     33     virtual void setBuffers(const Vector<sp<IMemory> > &buffers) = 0;
     34 
     35     virtual void onBufferAvailable(size_t index) = 0;
     36 
     37     enum {
     38         // Video PES packets contain exactly one (aligned) access unit.
     39         kFlagAlignedVideoData = 1,
     40 
     41         // Timestamps are in ALooper::GetNowUs() units.
     42         kFlagIsRealTimeData   = 2,
     43     };
     44     virtual uint32_t flags() const { return 0; }
     45 };
     46 
     47 struct IStreamListener : public IInterface {
     48     DECLARE_META_INTERFACE(StreamListener);
     49 
     50     enum Command {
     51         EOS,
     52         DISCONTINUITY,
     53     };
     54 
     55     virtual void queueBuffer(size_t index, size_t size) = 0;
     56 
     57     virtual void issueCommand(
     58             Command cmd, bool synchronous, const sp<AMessage> &msg = NULL) = 0;
     59 };
     60 
     61 ////////////////////////////////////////////////////////////////////////////////
     62 
     63 struct BnStreamSource : public BnInterface<IStreamSource> {
     64     virtual status_t onTransact(
     65             uint32_t code, const Parcel &data, Parcel *reply,
     66             uint32_t flags = 0);
     67 };
     68 
     69 struct BnStreamListener : public BnInterface<IStreamListener> {
     70     virtual status_t onTransact(
     71             uint32_t code, const Parcel &data, Parcel *reply,
     72             uint32_t flags = 0);
     73 };
     74 
     75 }  // namespace android
     76 
     77 #endif  // ANDROID_ISTREAMSOURCE_H_
     78