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      1 /*
      2  * Copyright (C) 2009 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_FRAMEWORKS_BASE_MEDIA_LIBMEDIAPLAYERSERVICE_TESTPLAYERSTUB_H__
     18 #define ANDROID_FRAMEWORKS_BASE_MEDIA_LIBMEDIAPLAYERSERVICE_TESTPLAYERSTUB_H__
     19 
     20 #include <media/MediaPlayerInterface.h>
     21 #include <utils/Errors.h>
     22 
     23 namespace android {
     24 class MediaPlayerBase;  // in media/MediaPlayerInterface.h
     25 
     26 // Wrapper around a test media player that gets dynamically loaded.
     27 //
     28 // The URL passed to setDataSource has this format:
     29 //
     30 //   test:<name of the .so>?url=<url for the real setDataSource impl.>
     31 //
     32 // e.g:
     33 //   test:invoke_test_media_player.so?url=http://youtube.com/
     34 //   test:invoke_test_media_player.so?url=speedtest
     35 //
     36 // TestPlayerStub::setDataSource loads the library in the test url. 2
     37 // entry points with C linkage are expected. One to create the test
     38 // player and one to destroy it.
     39 //
     40 // extern "C" android::MediaPlayerBase* newPlayer();
     41 // extern "C" android::status_t deletePlayer(android::MediaPlayerBase *p);
     42 //
     43 // Once the test player has been loaded, its setDataSource
     44 // implementation is called with the value of the 'url' parameter.
     45 //
     46 // typical usage in a java test:
     47 // ============================
     48 //
     49 //  MediaPlayer p = new MediaPlayer();
     50 //  p.setDataSource("test:invoke_mock_media_player.so?url=http://youtube.com");
     51 //  p.prepare();
     52 //  ...
     53 //  p.release();
     54 
     55 class TestPlayerStub : public MediaPlayerInterface {
     56   public:
     57     typedef MediaPlayerBase* (*NEW_PLAYER)();
     58     typedef status_t (*DELETE_PLAYER)(MediaPlayerBase *);
     59 
     60     TestPlayerStub();
     61     virtual ~TestPlayerStub();
     62 
     63     // Called right after the constructor. Check if the current build
     64     // allows test players.
     65     virtual status_t initCheck();
     66 
     67     // @param url Should be a test url. See class comment.
     68     virtual status_t setDataSource(
     69             const sp<IMediaHTTPService> &httpService,
     70             const char* url,
     71             const KeyedVector<String8, String8> *headers);
     72 
     73     // Test player for a file descriptor source is not supported.
     74     virtual status_t setDataSource(int, int64_t, int64_t)  {
     75         return INVALID_OPERATION;
     76     }
     77 
     78 
     79     // All the methods below wrap the mPlayer instance.
     80     virtual status_t setVideoSurfaceTexture(
     81             const android::sp<android::IGraphicBufferProducer>& st)  {
     82         return mPlayer->setVideoSurfaceTexture(st);
     83     }
     84     virtual status_t prepare() {return mPlayer->prepare();}
     85     virtual status_t prepareAsync()  {return mPlayer->prepareAsync();}
     86     virtual status_t start()  {return mPlayer->start();}
     87     virtual status_t stop()  {return mPlayer->stop();}
     88     virtual status_t pause()  {return mPlayer->pause();}
     89     virtual bool isPlaying() {return mPlayer->isPlaying();}
     90     virtual status_t seekTo(int msec) {return mPlayer->seekTo(msec);}
     91     virtual status_t getCurrentPosition(int *p)  {
     92         return mPlayer->getCurrentPosition(p);
     93     }
     94     virtual status_t getDuration(int *d)  {return mPlayer->getDuration(d);}
     95     virtual status_t reset() {return mPlayer->reset();}
     96     virtual status_t setLooping(int b)  {return mPlayer->setLooping(b);}
     97     virtual player_type playerType() {return mPlayer->playerType();}
     98     virtual status_t invoke(const android::Parcel& in, android::Parcel *out) {
     99         return mPlayer->invoke(in, out);
    100     }
    101     virtual status_t setParameter(int key, const Parcel &request) {
    102         return mPlayer->setParameter(key, request);
    103     }
    104     virtual status_t getParameter(int key, Parcel *reply) {
    105         return mPlayer->getParameter(key, reply);
    106     }
    107 
    108 
    109     // @return true if the current build is 'eng' or 'test' and the
    110     //              url's scheme is 'test:'
    111     static bool canBeUsed(const char *url);
    112 
    113   private:
    114     // Release the player, dlclose the library.
    115     status_t resetInternal();
    116     status_t parseUrl();
    117 
    118     char *mUrl;                // test:foo.so?url=http://bar
    119     char *mFilename;           // foo.so
    120     char *mContentUrl;         // http://bar
    121     void *mHandle;             // returned by dlopen
    122     NEW_PLAYER    mNewPlayer;
    123     DELETE_PLAYER mDeletePlayer;
    124     MediaPlayerBase *mPlayer;  // wrapped player
    125 };
    126 
    127 }  // namespace android
    128 
    129 #endif
    130