| /* //device/extlibs/pv/android/IAudioTrack.cpp |
| ** |
| ** Copyright 2007, The Android Open Source Project |
| ** |
| ** Licensed under the Apache License, Version 2.0 (the "License"); |
| ** you may not use this file except in compliance with the License. |
| ** You may obtain a copy of the License at |
| ** |
| ** http://www.apache.org/licenses/LICENSE-2.0 |
| ** |
| ** Unless required by applicable law or agreed to in writing, software |
| ** distributed under the License is distributed on an "AS IS" BASIS, |
| ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| ** See the License for the specific language governing permissions and |
| ** limitations under the License. |
| */ |
| |
| #define LOG_TAG "IAudioTrack" |
| //#define LOG_NDEBUG 0 |
| #include <utils/Log.h> |
| |
| #include <stdint.h> |
| #include <sys/types.h> |
| |
| #include <binder/Parcel.h> |
| |
| #include <media/IAudioTrack.h> |
| |
| namespace android { |
| |
| enum { |
| GET_CBLK = IBinder::FIRST_CALL_TRANSACTION, |
| START, |
| STOP, |
| FLUSH, |
| MUTE, |
| PAUSE, |
| ATTACH_AUX_EFFECT |
| }; |
| |
| class BpAudioTrack : public BpInterface<IAudioTrack> |
| { |
| public: |
| BpAudioTrack(const sp<IBinder>& impl) |
| : BpInterface<IAudioTrack>(impl) |
| { |
| } |
| |
| virtual sp<IMemory> getCblk() const |
| { |
| Parcel data, reply; |
| sp<IMemory> cblk; |
| data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| status_t status = remote()->transact(GET_CBLK, data, &reply); |
| if (status == NO_ERROR) { |
| cblk = interface_cast<IMemory>(reply.readStrongBinder()); |
| } |
| return cblk; |
| } |
| |
| virtual status_t start(pid_t tid) |
| { |
| Parcel data, reply; |
| data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| data.writeInt32(tid); |
| status_t status = remote()->transact(START, data, &reply); |
| if (status == NO_ERROR) { |
| status = reply.readInt32(); |
| } else { |
| ALOGW("start() error: %s", strerror(-status)); |
| } |
| return status; |
| } |
| |
| virtual void stop() |
| { |
| Parcel data, reply; |
| data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| remote()->transact(STOP, data, &reply); |
| } |
| |
| virtual void flush() |
| { |
| Parcel data, reply; |
| data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| remote()->transact(FLUSH, data, &reply); |
| } |
| |
| virtual void mute(bool e) |
| { |
| Parcel data, reply; |
| data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| data.writeInt32(e); |
| remote()->transact(MUTE, data, &reply); |
| } |
| |
| virtual void pause() |
| { |
| Parcel data, reply; |
| data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| remote()->transact(PAUSE, data, &reply); |
| } |
| |
| virtual status_t attachAuxEffect(int effectId) |
| { |
| Parcel data, reply; |
| data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| data.writeInt32(effectId); |
| status_t status = remote()->transact(ATTACH_AUX_EFFECT, data, &reply); |
| if (status == NO_ERROR) { |
| status = reply.readInt32(); |
| } else { |
| ALOGW("attachAuxEffect() error: %s", strerror(-status)); |
| } |
| return status; |
| } |
| }; |
| |
| IMPLEMENT_META_INTERFACE(AudioTrack, "android.media.IAudioTrack"); |
| |
| // ---------------------------------------------------------------------- |
| |
| status_t BnAudioTrack::onTransact( |
| uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) |
| { |
| switch(code) { |
| case GET_CBLK: { |
| CHECK_INTERFACE(IAudioTrack, data, reply); |
| reply->writeStrongBinder(getCblk()->asBinder()); |
| return NO_ERROR; |
| } break; |
| case START: { |
| CHECK_INTERFACE(IAudioTrack, data, reply); |
| reply->writeInt32(start(data.readInt32())); |
| return NO_ERROR; |
| } break; |
| case STOP: { |
| CHECK_INTERFACE(IAudioTrack, data, reply); |
| stop(); |
| return NO_ERROR; |
| } break; |
| case FLUSH: { |
| CHECK_INTERFACE(IAudioTrack, data, reply); |
| flush(); |
| return NO_ERROR; |
| } break; |
| case MUTE: { |
| CHECK_INTERFACE(IAudioTrack, data, reply); |
| mute( data.readInt32() ); |
| return NO_ERROR; |
| } break; |
| case PAUSE: { |
| CHECK_INTERFACE(IAudioTrack, data, reply); |
| pause(); |
| return NO_ERROR; |
| } |
| case ATTACH_AUX_EFFECT: { |
| CHECK_INTERFACE(IAudioTrack, data, reply); |
| reply->writeInt32(attachAuxEffect(data.readInt32())); |
| return NO_ERROR; |
| } break; |
| default: |
| return BBinder::onTransact(code, data, reply, flags); |
| } |
| } |
| |
| }; // namespace android |
| |