The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* //device/extlibs/pv/android/IAudioTrack.cpp |
| 2 | ** |
| 3 | ** Copyright 2007, 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 <utils/Parcel.h> |
| 22 | |
| 23 | #include <media/IAudioTrack.h> |
| 24 | |
| 25 | namespace android { |
| 26 | |
| 27 | enum { |
| 28 | GET_CBLK = IBinder::FIRST_CALL_TRANSACTION, |
| 29 | START, |
| 30 | STOP, |
| 31 | FLUSH, |
| 32 | MUTE, |
| 33 | PAUSE |
| 34 | }; |
| 35 | |
| 36 | class BpAudioTrack : public BpInterface<IAudioTrack> |
| 37 | { |
| 38 | public: |
| 39 | BpAudioTrack(const sp<IBinder>& impl) |
| 40 | : BpInterface<IAudioTrack>(impl) |
| 41 | { |
| 42 | } |
| 43 | |
| 44 | virtual status_t start() |
| 45 | { |
| 46 | Parcel data, reply; |
| 47 | data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| 48 | remote()->transact(START, data, &reply); |
| 49 | return reply.readInt32(); |
| 50 | } |
| 51 | |
| 52 | virtual void stop() |
| 53 | { |
| 54 | Parcel data, reply; |
| 55 | data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| 56 | remote()->transact(STOP, data, &reply); |
| 57 | } |
| 58 | |
| 59 | virtual void flush() |
| 60 | { |
| 61 | Parcel data, reply; |
| 62 | data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| 63 | remote()->transact(FLUSH, data, &reply); |
| 64 | } |
| 65 | |
| 66 | virtual void mute(bool e) |
| 67 | { |
| 68 | Parcel data, reply; |
| 69 | data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| 70 | data.writeInt32(e); |
| 71 | remote()->transact(MUTE, data, &reply); |
| 72 | } |
| 73 | |
| 74 | virtual void pause() |
| 75 | { |
| 76 | Parcel data, reply; |
| 77 | data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| 78 | remote()->transact(PAUSE, data, &reply); |
| 79 | } |
| 80 | |
| 81 | virtual sp<IMemory> getCblk() const |
| 82 | { |
| 83 | Parcel data, reply; |
| 84 | data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| 85 | remote()->transact(GET_CBLK, data, &reply); |
| 86 | return interface_cast<IMemory>(reply.readStrongBinder()); |
| 87 | } |
| 88 | }; |
| 89 | |
| 90 | IMPLEMENT_META_INTERFACE(AudioTrack, "android.media.IAudioTrack"); |
| 91 | |
| 92 | // ---------------------------------------------------------------------- |
| 93 | |
| 94 | #define CHECK_INTERFACE(interface, data, reply) \ |
| 95 | do { if (!data.enforceInterface(interface::getInterfaceDescriptor())) { \ |
| 96 | LOGW("Call incorrectly routed to " #interface); \ |
| 97 | return PERMISSION_DENIED; \ |
| 98 | } } while (0) |
| 99 | |
| 100 | status_t BnAudioTrack::onTransact( |
| 101 | uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) |
| 102 | { |
| 103 | switch(code) { |
| 104 | case GET_CBLK: { |
| 105 | CHECK_INTERFACE(IAudioTrack, data, reply); |
| 106 | reply->writeStrongBinder(getCblk()->asBinder()); |
| 107 | return NO_ERROR; |
| 108 | } break; |
| 109 | case START: { |
| 110 | CHECK_INTERFACE(IAudioTrack, data, reply); |
| 111 | reply->writeInt32(start()); |
| 112 | return NO_ERROR; |
| 113 | } break; |
| 114 | case STOP: { |
| 115 | CHECK_INTERFACE(IAudioTrack, data, reply); |
| 116 | stop(); |
| 117 | return NO_ERROR; |
| 118 | } break; |
| 119 | case FLUSH: { |
| 120 | CHECK_INTERFACE(IAudioTrack, data, reply); |
| 121 | flush(); |
| 122 | return NO_ERROR; |
| 123 | } break; |
| 124 | case MUTE: { |
| 125 | CHECK_INTERFACE(IAudioTrack, data, reply); |
| 126 | mute( data.readInt32() ); |
| 127 | return NO_ERROR; |
| 128 | } break; |
| 129 | case PAUSE: { |
| 130 | CHECK_INTERFACE(IAudioTrack, data, reply); |
| 131 | pause(); |
| 132 | return NO_ERROR; |
| 133 | } |
| 134 | default: |
| 135 | return BBinder::onTransact(code, data, reply, flags); |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | }; // namespace android |
| 140 | |