IMediaPlayerService.cpp revision d7bee3a9d2ad76d073d91f0ee36d5ac5f9df480c 
1/*
2**
3** Copyright 2008, The Android Open Source Project
4**
5** Licensed under the Apache License, Version 2.0 (the "License");
6** you may not use this file except in compliance with the License.
7** You may obtain a copy of the License at
8**
9**     http://www.apache.org/licenses/LICENSE-2.0
10**
11** Unless required by applicable law or agreed to in writing, software
12** distributed under the License is distributed on an "AS IS" BASIS,
13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14** See the License for the specific language governing permissions and
15** limitations under the License.
16*/
17
18#include <stdint.h>
19#include <sys/types.h>
20
21#include <binder/Parcel.h>
22#include <binder/IMemory.h>
23#include <media/ICrypto.h>
24#include <media/IMediaPlayerService.h>
25#include <media/IMediaRecorder.h>
26#include <media/IOMX.h>
27#include <media/IStreamSource.h>
28
29#include <utils/Errors.h>  // for status_t
30
31namespace android {
32
33enum {
34    CREATE = IBinder::FIRST_CALL_TRANSACTION,
35    DECODE_URL,
36    DECODE_FD,
37    CREATE_MEDIA_RECORDER,
38    CREATE_METADATA_RETRIEVER,
39    GET_OMX,
40    MAKE_CRYPTO,
41    ENABLE_REMOTE_DISPLAY,
42    ADD_BATTERY_DATA,
43    PULL_BATTERY_DATA
44};
45
46class BpMediaPlayerService: public BpInterface<IMediaPlayerService>
47{
48public:
49    BpMediaPlayerService(const sp<IBinder>& impl)
50        : BpInterface<IMediaPlayerService>(impl)
51    {
52    }
53
54    virtual sp<IMediaMetadataRetriever> createMetadataRetriever(pid_t pid)
55    {
56        Parcel data, reply;
57        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
58        data.writeInt32(pid);
59        remote()->transact(CREATE_METADATA_RETRIEVER, data, &reply);
60        return interface_cast<IMediaMetadataRetriever>(reply.readStrongBinder());
61    }
62
63    virtual sp<IMediaPlayer> create(
64            pid_t pid, const sp<IMediaPlayerClient>& client, int audioSessionId) {
65        Parcel data, reply;
66        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
67        data.writeInt32(pid);
68        data.writeStrongBinder(client->asBinder());
69        data.writeInt32(audioSessionId);
70
71        remote()->transact(CREATE, data, &reply);
72        return interface_cast<IMediaPlayer>(reply.readStrongBinder());
73    }
74
75    virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid)
76    {
77        Parcel data, reply;
78        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
79        data.writeInt32(pid);
80        remote()->transact(CREATE_MEDIA_RECORDER, data, &reply);
81        return interface_cast<IMediaRecorder>(reply.readStrongBinder());
82    }
83
84    virtual sp<IMemory> decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat)
85    {
86        Parcel data, reply;
87        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
88        data.writeCString(url);
89        remote()->transact(DECODE_URL, data, &reply);
90        *pSampleRate = uint32_t(reply.readInt32());
91        *pNumChannels = reply.readInt32();
92        *pFormat = (audio_format_t) reply.readInt32();
93        return interface_cast<IMemory>(reply.readStrongBinder());
94    }
95
96    virtual sp<IMemory> decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat)
97    {
98        Parcel data, reply;
99        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
100        data.writeFileDescriptor(fd);
101        data.writeInt64(offset);
102        data.writeInt64(length);
103        remote()->transact(DECODE_FD, data, &reply);
104        *pSampleRate = uint32_t(reply.readInt32());
105        *pNumChannels = reply.readInt32();
106        *pFormat = (audio_format_t) reply.readInt32();
107        return interface_cast<IMemory>(reply.readStrongBinder());
108    }
109
110    virtual sp<IOMX> getOMX() {
111        Parcel data, reply;
112        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
113        remote()->transact(GET_OMX, data, &reply);
114        return interface_cast<IOMX>(reply.readStrongBinder());
115    }
116
117    virtual sp<ICrypto> makeCrypto() {
118        Parcel data, reply;
119        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
120        remote()->transact(MAKE_CRYPTO, data, &reply);
121        return interface_cast<ICrypto>(reply.readStrongBinder());
122    }
123
124    virtual status_t enableRemoteDisplay(bool enable) {
125        Parcel data, reply;
126        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
127        data.writeInt32(enable);
128        remote()->transact(ENABLE_REMOTE_DISPLAY, data, &reply);
129        return reply.readInt32();
130    }
131
132    virtual void addBatteryData(uint32_t params) {
133        Parcel data, reply;
134        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
135        data.writeInt32(params);
136        remote()->transact(ADD_BATTERY_DATA, data, &reply);
137    }
138
139    virtual status_t pullBatteryData(Parcel* reply) {
140        Parcel data;
141        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
142        return remote()->transact(PULL_BATTERY_DATA, data, reply);
143    }
144};
145
146IMPLEMENT_META_INTERFACE(MediaPlayerService, "android.media.IMediaPlayerService");
147
148// ----------------------------------------------------------------------
149
150status_t BnMediaPlayerService::onTransact(
151    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
152{
153    switch (code) {
154        case CREATE: {
155            CHECK_INTERFACE(IMediaPlayerService, data, reply);
156            pid_t pid = data.readInt32();
157            sp<IMediaPlayerClient> client =
158                interface_cast<IMediaPlayerClient>(data.readStrongBinder());
159            int audioSessionId = data.readInt32();
160            sp<IMediaPlayer> player = create(pid, client, audioSessionId);
161            reply->writeStrongBinder(player->asBinder());
162            return NO_ERROR;
163        } break;
164        case DECODE_URL: {
165            CHECK_INTERFACE(IMediaPlayerService, data, reply);
166            const char* url = data.readCString();
167            uint32_t sampleRate;
168            int numChannels;
169            audio_format_t format;
170            sp<IMemory> player = decode(url, &sampleRate, &numChannels, &format);
171            reply->writeInt32(sampleRate);
172            reply->writeInt32(numChannels);
173            reply->writeInt32((int32_t) format);
174            reply->writeStrongBinder(player->asBinder());
175            return NO_ERROR;
176        } break;
177        case DECODE_FD: {
178            CHECK_INTERFACE(IMediaPlayerService, data, reply);
179            int fd = dup(data.readFileDescriptor());
180            int64_t offset = data.readInt64();
181            int64_t length = data.readInt64();
182            uint32_t sampleRate;
183            int numChannels;
184            audio_format_t format;
185            sp<IMemory> player = decode(fd, offset, length, &sampleRate, &numChannels, &format);
186            reply->writeInt32(sampleRate);
187            reply->writeInt32(numChannels);
188            reply->writeInt32((int32_t) format);
189            reply->writeStrongBinder(player->asBinder());
190            return NO_ERROR;
191        } break;
192        case CREATE_MEDIA_RECORDER: {
193            CHECK_INTERFACE(IMediaPlayerService, data, reply);
194            pid_t pid = data.readInt32();
195            sp<IMediaRecorder> recorder = createMediaRecorder(pid);
196            reply->writeStrongBinder(recorder->asBinder());
197            return NO_ERROR;
198        } break;
199        case CREATE_METADATA_RETRIEVER: {
200            CHECK_INTERFACE(IMediaPlayerService, data, reply);
201            pid_t pid = data.readInt32();
202            sp<IMediaMetadataRetriever> retriever = createMetadataRetriever(pid);
203            reply->writeStrongBinder(retriever->asBinder());
204            return NO_ERROR;
205        } break;
206        case GET_OMX: {
207            CHECK_INTERFACE(IMediaPlayerService, data, reply);
208            sp<IOMX> omx = getOMX();
209            reply->writeStrongBinder(omx->asBinder());
210            return NO_ERROR;
211        } break;
212        case MAKE_CRYPTO: {
213            CHECK_INTERFACE(IMediaPlayerService, data, reply);
214            sp<ICrypto> crypto = makeCrypto();
215            reply->writeStrongBinder(crypto->asBinder());
216            return NO_ERROR;
217        } break;
218        case ENABLE_REMOTE_DISPLAY: {
219            CHECK_INTERFACE(IMediaPlayerService, data, reply);
220            bool enable = data.readInt32();
221            reply->writeInt32(enableRemoteDisplay(enable));
222            return NO_ERROR;
223        } break;
224        case ADD_BATTERY_DATA: {
225            CHECK_INTERFACE(IMediaPlayerService, data, reply);
226            uint32_t params = data.readInt32();
227            addBatteryData(params);
228            return NO_ERROR;
229        } break;
230        case PULL_BATTERY_DATA: {
231            CHECK_INTERFACE(IMediaPlayerService, data, reply);
232            pullBatteryData(reply);
233            return NO_ERROR;
234        } break;
235        default:
236            return BBinder::onTransact(code, data, reply, flags);
237    }
238}
239
240// ----------------------------------------------------------------------------
241
242}; // namespace android
243