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/IHDCP.h>
25#include <media/IMediaPlayerService.h>
26#include <media/IMediaRecorder.h>
27#include <media/IOMX.h>
28#include <media/IRemoteDisplay.h>
29#include <media/IRemoteDisplayClient.h>
30#include <media/IStreamSource.h>
31
32#include <utils/Errors.h>  // for status_t
33#include <utils/String8.h>
34
35namespace android {
36
37enum {
38    CREATE = IBinder::FIRST_CALL_TRANSACTION,
39    DECODE_URL,
40    DECODE_FD,
41    CREATE_MEDIA_RECORDER,
42    CREATE_METADATA_RETRIEVER,
43    GET_OMX,
44    MAKE_CRYPTO,
45    MAKE_HDCP,
46    ADD_BATTERY_DATA,
47    PULL_BATTERY_DATA,
48    LISTEN_FOR_REMOTE_DISPLAY,
49};
50
51class BpMediaPlayerService: public BpInterface<IMediaPlayerService>
52{
53public:
54    BpMediaPlayerService(const sp<IBinder>& impl)
55        : BpInterface<IMediaPlayerService>(impl)
56    {
57    }
58
59    virtual sp<IMediaMetadataRetriever> createMetadataRetriever(pid_t pid)
60    {
61        Parcel data, reply;
62        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
63        data.writeInt32(pid);
64        remote()->transact(CREATE_METADATA_RETRIEVER, data, &reply);
65        return interface_cast<IMediaMetadataRetriever>(reply.readStrongBinder());
66    }
67
68    virtual sp<IMediaPlayer> create(
69            pid_t pid, const sp<IMediaPlayerClient>& client, int audioSessionId) {
70        Parcel data, reply;
71        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
72        data.writeInt32(pid);
73        data.writeStrongBinder(client->asBinder());
74        data.writeInt32(audioSessionId);
75
76        remote()->transact(CREATE, data, &reply);
77        return interface_cast<IMediaPlayer>(reply.readStrongBinder());
78    }
79
80    virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid)
81    {
82        Parcel data, reply;
83        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
84        data.writeInt32(pid);
85        remote()->transact(CREATE_MEDIA_RECORDER, data, &reply);
86        return interface_cast<IMediaRecorder>(reply.readStrongBinder());
87    }
88
89    virtual sp<IMemory> decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat)
90    {
91        Parcel data, reply;
92        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
93        data.writeCString(url);
94        remote()->transact(DECODE_URL, data, &reply);
95        *pSampleRate = uint32_t(reply.readInt32());
96        *pNumChannels = reply.readInt32();
97        *pFormat = (audio_format_t) reply.readInt32();
98        return interface_cast<IMemory>(reply.readStrongBinder());
99    }
100
101    virtual sp<IMemory> decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat)
102    {
103        Parcel data, reply;
104        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
105        data.writeFileDescriptor(fd);
106        data.writeInt64(offset);
107        data.writeInt64(length);
108        remote()->transact(DECODE_FD, data, &reply);
109        *pSampleRate = uint32_t(reply.readInt32());
110        *pNumChannels = reply.readInt32();
111        *pFormat = (audio_format_t) reply.readInt32();
112        return interface_cast<IMemory>(reply.readStrongBinder());
113    }
114
115    virtual sp<IOMX> getOMX() {
116        Parcel data, reply;
117        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
118        remote()->transact(GET_OMX, data, &reply);
119        return interface_cast<IOMX>(reply.readStrongBinder());
120    }
121
122    virtual sp<ICrypto> makeCrypto() {
123        Parcel data, reply;
124        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
125        remote()->transact(MAKE_CRYPTO, data, &reply);
126        return interface_cast<ICrypto>(reply.readStrongBinder());
127    }
128
129    virtual sp<IHDCP> makeHDCP() {
130        Parcel data, reply;
131        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
132        remote()->transact(MAKE_HDCP, data, &reply);
133        return interface_cast<IHDCP>(reply.readStrongBinder());
134    }
135
136    virtual void addBatteryData(uint32_t params) {
137        Parcel data, reply;
138        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
139        data.writeInt32(params);
140        remote()->transact(ADD_BATTERY_DATA, data, &reply);
141    }
142
143    virtual status_t pullBatteryData(Parcel* reply) {
144        Parcel data;
145        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
146        return remote()->transact(PULL_BATTERY_DATA, data, reply);
147    }
148
149    virtual sp<IRemoteDisplay> listenForRemoteDisplay(const sp<IRemoteDisplayClient>& client,
150            const String8& iface)
151    {
152        Parcel data, reply;
153        data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
154        data.writeStrongBinder(client->asBinder());
155        data.writeString8(iface);
156        remote()->transact(LISTEN_FOR_REMOTE_DISPLAY, data, &reply);
157        return interface_cast<IRemoteDisplay>(reply.readStrongBinder());
158    }
159};
160
161IMPLEMENT_META_INTERFACE(MediaPlayerService, "android.media.IMediaPlayerService");
162
163// ----------------------------------------------------------------------
164
165status_t BnMediaPlayerService::onTransact(
166    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
167{
168    switch (code) {
169        case CREATE: {
170            CHECK_INTERFACE(IMediaPlayerService, data, reply);
171            pid_t pid = data.readInt32();
172            sp<IMediaPlayerClient> client =
173                interface_cast<IMediaPlayerClient>(data.readStrongBinder());
174            int audioSessionId = data.readInt32();
175            sp<IMediaPlayer> player = create(pid, client, audioSessionId);
176            reply->writeStrongBinder(player->asBinder());
177            return NO_ERROR;
178        } break;
179        case DECODE_URL: {
180            CHECK_INTERFACE(IMediaPlayerService, data, reply);
181            const char* url = data.readCString();
182            uint32_t sampleRate;
183            int numChannels;
184            audio_format_t format;
185            sp<IMemory> player = decode(url, &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 DECODE_FD: {
193            CHECK_INTERFACE(IMediaPlayerService, data, reply);
194            int fd = dup(data.readFileDescriptor());
195            int64_t offset = data.readInt64();
196            int64_t length = data.readInt64();
197            uint32_t sampleRate;
198            int numChannels;
199            audio_format_t format;
200            sp<IMemory> player = decode(fd, offset, length, &sampleRate, &numChannels, &format);
201            reply->writeInt32(sampleRate);
202            reply->writeInt32(numChannels);
203            reply->writeInt32((int32_t) format);
204            reply->writeStrongBinder(player->asBinder());
205            return NO_ERROR;
206        } break;
207        case CREATE_MEDIA_RECORDER: {
208            CHECK_INTERFACE(IMediaPlayerService, data, reply);
209            pid_t pid = data.readInt32();
210            sp<IMediaRecorder> recorder = createMediaRecorder(pid);
211            reply->writeStrongBinder(recorder->asBinder());
212            return NO_ERROR;
213        } break;
214        case CREATE_METADATA_RETRIEVER: {
215            CHECK_INTERFACE(IMediaPlayerService, data, reply);
216            pid_t pid = data.readInt32();
217            sp<IMediaMetadataRetriever> retriever = createMetadataRetriever(pid);
218            reply->writeStrongBinder(retriever->asBinder());
219            return NO_ERROR;
220        } break;
221        case GET_OMX: {
222            CHECK_INTERFACE(IMediaPlayerService, data, reply);
223            sp<IOMX> omx = getOMX();
224            reply->writeStrongBinder(omx->asBinder());
225            return NO_ERROR;
226        } break;
227        case MAKE_CRYPTO: {
228            CHECK_INTERFACE(IMediaPlayerService, data, reply);
229            sp<ICrypto> crypto = makeCrypto();
230            reply->writeStrongBinder(crypto->asBinder());
231            return NO_ERROR;
232        } break;
233        case MAKE_HDCP: {
234            CHECK_INTERFACE(IMediaPlayerService, data, reply);
235            sp<IHDCP> hdcp = makeHDCP();
236            reply->writeStrongBinder(hdcp->asBinder());
237            return NO_ERROR;
238        } break;
239        case ADD_BATTERY_DATA: {
240            CHECK_INTERFACE(IMediaPlayerService, data, reply);
241            uint32_t params = data.readInt32();
242            addBatteryData(params);
243            return NO_ERROR;
244        } break;
245        case PULL_BATTERY_DATA: {
246            CHECK_INTERFACE(IMediaPlayerService, data, reply);
247            pullBatteryData(reply);
248            return NO_ERROR;
249        } break;
250        case LISTEN_FOR_REMOTE_DISPLAY: {
251            CHECK_INTERFACE(IMediaPlayerService, data, reply);
252            sp<IRemoteDisplayClient> client(
253                    interface_cast<IRemoteDisplayClient>(data.readStrongBinder()));
254            String8 iface(data.readString8());
255            sp<IRemoteDisplay> display(listenForRemoteDisplay(client, iface));
256            reply->writeStrongBinder(display->asBinder());
257            return NO_ERROR;
258        } break;
259        default:
260            return BBinder::onTransact(code, data, reply, flags);
261    }
262}
263
264// ----------------------------------------------------------------------------
265
266}; // namespace android
267