103         virtual status_t    getPosition(uint32_t *position) const = 0;
104         virtual status_t    getTimestamp(AudioTimestamp &ts) const = 0;
106         virtual status_t    getFramesWritten(uint32_t *frameswritten) const = 0;
115         virtual status_t    open(
126         virtual status_t    start() = 0;
145         virtual status_t    setPlaybackRate(const AudioPlaybackRate& rate) = 0;
146         virtual status_t    getPlaybackRate(AudioPlaybackRate* rate /* nonnull */) = 0;
149         virtual status_t    setParameters(const String8& /* keyValuePairs */) { return NO_ERROR; }  in setParameters()
158         virtual status_t    setOutputDevice(audio_port_handle_t deviceId) = 0;
159         virtual status_t    getRoutedDeviceId(audio_port_handle_t* deviceId) = 0;
160         virtual status_t    enableAudioDeviceCallback(bool enabled) = 0;
165     virtual status_t    initCheck() = 0;
168     virtual status_t    setUID(uid_t /* uid */) {  in setUID()
172     virtual status_t    setDataSource(
177     virtual status_t    setDataSource(int fd, int64_t offset, int64_t length) = 0;
179     virtual status_t    setDataSource(const sp<IStreamSource>& /* source */) {  in setDataSource()
183     virtual status_t    setDataSource(const sp<DataSource>& /* source */) {  in setDataSource()
187     virtual status_t    setDataSource(const String8& /* rtpParams */) {  in setDataSource()
192     virtual status_t    setVideoSurfaceTexture(
195     virtual status_t    getBufferingSettings(  in getBufferingSettings()
200     virtual status_t    setBufferingSettings(const BufferingSettings& /* buffering */) {  in setBufferingSettings()
204     virtual status_t    prepare() = 0;
205     virtual status_t    prepareAsync() = 0;
206     virtual status_t    start() = 0;
207     virtual status_t    stop() = 0;
208     virtual status_t    pause() = 0;
210     virtual status_t    setPlaybackSettings(const AudioPlaybackRate& rate) {  in setPlaybackSettings()
217     virtual status_t    getPlaybackSettings(AudioPlaybackRate* rate /* nonnull */) {  in getPlaybackSettings()
221     virtual status_t    setSyncSettings(const AVSyncSettings& sync, float /* videoFps */) {  in setSyncSettings()
229     virtual status_t    getSyncSettings(  in getSyncSettings()
235     virtual status_t    seekTo(
237     virtual status_t    getCurrentPosition(int *msec) = 0;
238     virtual status_t    getDuration(int *msec) = 0;
239     virtual status_t    reset() = 0;
240     virtual status_t    notifyAt(int64_t /* mediaTimeUs */) {  in notifyAt()
243     virtual status_t    setLooping(int loop) = 0;
245     virtual status_t    setParameter(int key, const Parcel &request) = 0;
246     virtual status_t    getParameter(int key, Parcel *reply) = 0;
249     virtual status_t setRetransmitEndpoint(const struct sockaddr_in* /* endpoint */) {  in setRetransmitEndpoint()
252     virtual status_t getRetransmitEndpoint(struct sockaddr_in* /* endpoint */) {  in getRetransmitEndpoint()
255     virtual status_t setNextPlayer(const sp<MediaPlayerBase>& /* next */) {  in setNextPlayer()
266     virtual status_t    invoke(const Parcel& request, Parcel *reply) = 0;
275     virtual status_t    getMetadata(const media::Metadata::Filter& /* ids */,  in getMetadata()
299     virtual status_t dump(int /* fd */, const Vector<String16>& /* args */) const {  in dump()
304 …virtual status_t prepareDrm(const uint8_t /* uuid */[16], const Vector<uint8_t>& /* drmSessionId *…  in prepareDrm()
307     virtual status_t releaseDrm() {  in releaseDrm()
335     virtual status_t    setVolume(float leftVolume, float rightVolume) = 0;
336     virtual status_t    setAudioStreamType(audio_stream_type_t streamType) = 0;