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