20cb94eeb5
MediaPlayer.java has 3 new methods: * newRequest creates a Parcel that can be used to send data to the native player using invoke. * invoke issues synchronous calls to the native player using opaque parcels for the request and reply. IMediaPlayer.h has 1 new abstract method: * invoke The Midi and Vorbis players have a stub for these. So far only PV makes use of that new feature. To avoid any copy overhead, the JNI interface uses Parcel as a java object (no serialization/copy happens at the JNI layer). The remote interface token is inserted when the Parcel is constructed in java. That way the parcel is already routable when it reaches IMediaPlayer.cpp (proxy). No extra copy is needed there.
73 lines
2.5 KiB
C++
73 lines
2.5 KiB
C++
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_IMEDIAPLAYER_H
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#define ANDROID_IMEDIAPLAYER_H
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#include <utils/RefBase.h>
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#include <binder/IInterface.h>
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#include <binder/Parcel.h>
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namespace android {
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class Parcel;
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class ISurface;
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class IMediaPlayer: public IInterface
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{
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public:
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DECLARE_META_INTERFACE(MediaPlayer);
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virtual void disconnect() = 0;
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virtual status_t setVideoSurface(const sp<ISurface>& surface) = 0;
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virtual status_t prepareAsync() = 0;
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virtual status_t start() = 0;
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virtual status_t stop() = 0;
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virtual status_t pause() = 0;
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virtual status_t isPlaying(bool* state) = 0;
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virtual status_t seekTo(int msec) = 0;
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virtual status_t getCurrentPosition(int* msec) = 0;
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virtual status_t getDuration(int* msec) = 0;
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virtual status_t reset() = 0;
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virtual status_t setAudioStreamType(int type) = 0;
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virtual status_t setLooping(int loop) = 0;
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virtual status_t setVolume(float leftVolume, float rightVolume) = 0;
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// Invoke a generic method on the player by using opaque parcels
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// for the request and reply.
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// @param request Parcel that must start with the media player
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// interface token.
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// @param[out] reply Parcel to hold the reply data. Cannot be null.
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// @return OK if the invocation was made. PERMISSION_DENIED otherwise.
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virtual status_t invoke(const Parcel& request, Parcel *reply) = 0;
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};
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// ----------------------------------------------------------------------------
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class BnMediaPlayer: public BnInterface<IMediaPlayer>
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{
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public:
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virtual status_t onTransact( uint32_t code,
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const Parcel& data,
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Parcel* reply,
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uint32_t flags = 0);
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};
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}; // namespace android
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#endif // ANDROID_IMEDIAPLAYER_H
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