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 31 namespace android { 32 33 enum { 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 ADD_BATTERY_DATA, 42 PULL_BATTERY_DATA 43 }; 44 45 class BpMediaPlayerService: public BpInterface<IMediaPlayerService> 46 { 47 public: 48 BpMediaPlayerService(const sp<IBinder>& impl) 49 : BpInterface<IMediaPlayerService>(impl) 50 { 51 } 52 53 virtual sp<IMediaMetadataRetriever> createMetadataRetriever(pid_t pid) 54 { 55 Parcel data, reply; 56 data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor()); 57 data.writeInt32(pid); 58 remote()->transact(CREATE_METADATA_RETRIEVER, data, &reply); 59 return interface_cast<IMediaMetadataRetriever>(reply.readStrongBinder()); 60 } 61 62 virtual sp<IMediaPlayer> create( 63 pid_t pid, const sp<IMediaPlayerClient>& client, int audioSessionId) { 64 Parcel data, reply; 65 data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor()); 66 data.writeInt32(pid); 67 data.writeStrongBinder(client->asBinder()); 68 data.writeInt32(audioSessionId); 69 70 remote()->transact(CREATE, data, &reply); 71 return interface_cast<IMediaPlayer>(reply.readStrongBinder()); 72 } 73 74 virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid) 75 { 76 Parcel data, reply; 77 data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor()); 78 data.writeInt32(pid); 79 remote()->transact(CREATE_MEDIA_RECORDER, data, &reply); 80 return interface_cast<IMediaRecorder>(reply.readStrongBinder()); 81 } 82 83 virtual sp<IMemory> decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat) 84 { 85 Parcel data, reply; 86 data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor()); 87 data.writeCString(url); 88 remote()->transact(DECODE_URL, data, &reply); 89 *pSampleRate = uint32_t(reply.readInt32()); 90 *pNumChannels = reply.readInt32(); 91 *pFormat = (audio_format_t) reply.readInt32(); 92 return interface_cast<IMemory>(reply.readStrongBinder()); 93 } 94 95 virtual sp<IMemory> decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat) 96 { 97 Parcel data, reply; 98 data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor()); 99 data.writeFileDescriptor(fd); 100 data.writeInt64(offset); 101 data.writeInt64(length); 102 remote()->transact(DECODE_FD, data, &reply); 103 *pSampleRate = uint32_t(reply.readInt32()); 104 *pNumChannels = reply.readInt32(); 105 *pFormat = (audio_format_t) reply.readInt32(); 106 return interface_cast<IMemory>(reply.readStrongBinder()); 107 } 108 109 virtual sp<IOMX> getOMX() { 110 Parcel data, reply; 111 data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor()); 112 remote()->transact(GET_OMX, data, &reply); 113 return interface_cast<IOMX>(reply.readStrongBinder()); 114 } 115 116 virtual sp<ICrypto> makeCrypto() { 117 Parcel data, reply; 118 data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor()); 119 remote()->transact(MAKE_CRYPTO, data, &reply); 120 return interface_cast<ICrypto>(reply.readStrongBinder()); 121 } 122 123 virtual void addBatteryData(uint32_t params) { 124 Parcel data, reply; 125 data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor()); 126 data.writeInt32(params); 127 remote()->transact(ADD_BATTERY_DATA, data, &reply); 128 } 129 130 virtual status_t pullBatteryData(Parcel* reply) { 131 Parcel data; 132 data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor()); 133 return remote()->transact(PULL_BATTERY_DATA, data, reply); 134 } 135 }; 136 137 IMPLEMENT_META_INTERFACE(MediaPlayerService, "android.media.IMediaPlayerService"); 138 139 // ---------------------------------------------------------------------- 140 141 status_t BnMediaPlayerService::onTransact( 142 uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) 143 { 144 switch (code) { 145 case CREATE: { 146 CHECK_INTERFACE(IMediaPlayerService, data, reply); 147 pid_t pid = data.readInt32(); 148 sp<IMediaPlayerClient> client = 149 interface_cast<IMediaPlayerClient>(data.readStrongBinder()); 150 int audioSessionId = data.readInt32(); 151 sp<IMediaPlayer> player = create(pid, client, audioSessionId); 152 reply->writeStrongBinder(player->asBinder()); 153 return NO_ERROR; 154 } break; 155 case DECODE_URL: { 156 CHECK_INTERFACE(IMediaPlayerService, data, reply); 157 const char* url = data.readCString(); 158 uint32_t sampleRate; 159 int numChannels; 160 audio_format_t format; 161 sp<IMemory> player = decode(url, &sampleRate, &numChannels, &format); 162 reply->writeInt32(sampleRate); 163 reply->writeInt32(numChannels); 164 reply->writeInt32((int32_t) format); 165 reply->writeStrongBinder(player->asBinder()); 166 return NO_ERROR; 167 } break; 168 case DECODE_FD: { 169 CHECK_INTERFACE(IMediaPlayerService, data, reply); 170 int fd = dup(data.readFileDescriptor()); 171 int64_t offset = data.readInt64(); 172 int64_t length = data.readInt64(); 173 uint32_t sampleRate; 174 int numChannels; 175 audio_format_t format; 176 sp<IMemory> player = decode(fd, offset, length, &sampleRate, &numChannels, &format); 177 reply->writeInt32(sampleRate); 178 reply->writeInt32(numChannels); 179 reply->writeInt32((int32_t) format); 180 reply->writeStrongBinder(player->asBinder()); 181 return NO_ERROR; 182 } break; 183 case CREATE_MEDIA_RECORDER: { 184 CHECK_INTERFACE(IMediaPlayerService, data, reply); 185 pid_t pid = data.readInt32(); 186 sp<IMediaRecorder> recorder = createMediaRecorder(pid); 187 reply->writeStrongBinder(recorder->asBinder()); 188 return NO_ERROR; 189 } break; 190 case CREATE_METADATA_RETRIEVER: { 191 CHECK_INTERFACE(IMediaPlayerService, data, reply); 192 pid_t pid = data.readInt32(); 193 sp<IMediaMetadataRetriever> retriever = createMetadataRetriever(pid); 194 reply->writeStrongBinder(retriever->asBinder()); 195 return NO_ERROR; 196 } break; 197 case GET_OMX: { 198 CHECK_INTERFACE(IMediaPlayerService, data, reply); 199 sp<IOMX> omx = getOMX(); 200 reply->writeStrongBinder(omx->asBinder()); 201 return NO_ERROR; 202 } break; 203 case MAKE_CRYPTO: { 204 CHECK_INTERFACE(IMediaPlayerService, data, reply); 205 sp<ICrypto> crypto = makeCrypto(); 206 reply->writeStrongBinder(crypto->asBinder()); 207 return NO_ERROR; 208 } break; 209 case ADD_BATTERY_DATA: { 210 CHECK_INTERFACE(IMediaPlayerService, data, reply); 211 uint32_t params = data.readInt32(); 212 addBatteryData(params); 213 return NO_ERROR; 214 } break; 215 case PULL_BATTERY_DATA: { 216 CHECK_INTERFACE(IMediaPlayerService, data, reply); 217 pullBatteryData(reply); 218 return NO_ERROR; 219 } break; 220 default: 221 return BBinder::onTransact(code, data, reply, flags); 222 } 223 } 224 225 // ---------------------------------------------------------------------------- 226 227 }; // namespace android 228
