| /* |
| ** |
| ** 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 { |
| |
| using media::VolumeShaper; |
| |
| enum { |
| GET_CBLK = IBinder::FIRST_CALL_TRANSACTION, |
| START, |
| STOP, |
| FLUSH, |
| RESERVED, // was MUTE |
| PAUSE, |
| ATTACH_AUX_EFFECT, |
| SET_PARAMETERS, |
| SELECT_PRESENTATION, |
| GET_TIMESTAMP, |
| SIGNAL, |
| APPLY_VOLUME_SHAPER, |
| GET_VOLUME_SHAPER_STATE, |
| }; |
| |
| class BpAudioTrack : public BpInterface<IAudioTrack> |
| { |
| public: |
| explicit 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()); |
| if (cblk != 0 && cblk->pointer() == NULL) { |
| cblk.clear(); |
| } |
| } |
| return cblk; |
| } |
| |
| virtual status_t start() |
| { |
| Parcel data, reply; |
| data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| 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 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; |
| } |
| |
| virtual status_t setParameters(const String8& keyValuePairs) { |
| Parcel data, reply; |
| data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| data.writeString8(keyValuePairs); |
| status_t status = remote()->transact(SET_PARAMETERS, data, &reply); |
| if (status == NO_ERROR) { |
| status = reply.readInt32(); |
| } |
| return status; |
| } |
| |
| /* Selects the presentation (if available) */ |
| virtual status_t selectPresentation(int presentationId, int programId) { |
| Parcel data, reply; |
| data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| data.writeInt32(presentationId); |
| data.writeInt32(programId); |
| status_t status = remote()->transact(SELECT_PRESENTATION, data, &reply); |
| if (status == NO_ERROR) { |
| status = reply.readInt32(); |
| } |
| return status; |
| } |
| |
| virtual status_t getTimestamp(AudioTimestamp& timestamp) { |
| Parcel data, reply; |
| data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| status_t status = remote()->transact(GET_TIMESTAMP, data, &reply); |
| if (status == NO_ERROR) { |
| status = reply.readInt32(); |
| if (status == NO_ERROR) { |
| timestamp.mPosition = reply.readInt32(); |
| timestamp.mTime.tv_sec = reply.readInt32(); |
| timestamp.mTime.tv_nsec = reply.readInt32(); |
| } |
| } |
| return status; |
| } |
| |
| virtual void signal() { |
| Parcel data, reply; |
| data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| remote()->transact(SIGNAL, data, &reply); |
| } |
| |
| virtual VolumeShaper::Status applyVolumeShaper( |
| const sp<VolumeShaper::Configuration>& configuration, |
| const sp<VolumeShaper::Operation>& operation) { |
| Parcel data, reply; |
| data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| |
| status_t status = configuration.get() == nullptr |
| ? data.writeInt32(0) |
| : data.writeInt32(1) |
| ?: configuration->writeToParcel(&data); |
| if (status != NO_ERROR) { |
| return VolumeShaper::Status(status); |
| } |
| |
| status = operation.get() == nullptr |
| ? status = data.writeInt32(0) |
| : data.writeInt32(1) |
| ?: operation->writeToParcel(&data); |
| if (status != NO_ERROR) { |
| return VolumeShaper::Status(status); |
| } |
| |
| int32_t remoteVolumeShaperStatus; |
| status = remote()->transact(APPLY_VOLUME_SHAPER, data, &reply) |
| ?: reply.readInt32(&remoteVolumeShaperStatus); |
| |
| return VolumeShaper::Status(status ?: remoteVolumeShaperStatus); |
| } |
| |
| virtual sp<VolumeShaper::State> getVolumeShaperState(int id) { |
| Parcel data, reply; |
| data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| |
| data.writeInt32(id); |
| status_t status = remote()->transact(GET_VOLUME_SHAPER_STATE, data, &reply); |
| if (status != NO_ERROR) { |
| return nullptr; |
| } |
| sp<VolumeShaper::State> state = new VolumeShaper::State; |
| status = state->readFromParcel(&reply); |
| if (status != NO_ERROR) { |
| return nullptr; |
| } |
| return state; |
| } |
| }; |
| |
| 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(IInterface::asBinder(getCblk())); |
| return NO_ERROR; |
| } break; |
| case START: { |
| CHECK_INTERFACE(IAudioTrack, data, reply); |
| reply->writeInt32(start()); |
| 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 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; |
| case SET_PARAMETERS: { |
| CHECK_INTERFACE(IAudioTrack, data, reply); |
| String8 keyValuePairs(data.readString8()); |
| reply->writeInt32(setParameters(keyValuePairs)); |
| return NO_ERROR; |
| } break; |
| case SELECT_PRESENTATION: { |
| CHECK_INTERFACE(IAudioTrack, data, reply); |
| reply->writeInt32(selectPresentation(data.readInt32(), data.readInt32())); |
| return NO_ERROR; |
| } break; |
| case GET_TIMESTAMP: { |
| CHECK_INTERFACE(IAudioTrack, data, reply); |
| AudioTimestamp timestamp; |
| status_t status = getTimestamp(timestamp); |
| reply->writeInt32(status); |
| if (status == NO_ERROR) { |
| reply->writeInt32(timestamp.mPosition); |
| reply->writeInt32(timestamp.mTime.tv_sec); |
| reply->writeInt32(timestamp.mTime.tv_nsec); |
| } |
| return NO_ERROR; |
| } break; |
| case SIGNAL: { |
| CHECK_INTERFACE(IAudioTrack, data, reply); |
| signal(); |
| return NO_ERROR; |
| } break; |
| case APPLY_VOLUME_SHAPER: { |
| CHECK_INTERFACE(IAudioTrack, data, reply); |
| sp<VolumeShaper::Configuration> configuration; |
| sp<VolumeShaper::Operation> operation; |
| |
| int32_t present; |
| status_t status = data.readInt32(&present); |
| if (status == NO_ERROR && present != 0) { |
| configuration = new VolumeShaper::Configuration(); |
| status = configuration->readFromParcel(&data); |
| } |
| status = status ?: data.readInt32(&present); |
| if (status == NO_ERROR && present != 0) { |
| operation = new VolumeShaper::Operation(); |
| status = operation->readFromParcel(&data); |
| } |
| if (status == NO_ERROR) { |
| status = (status_t)applyVolumeShaper(configuration, operation); |
| } |
| reply->writeInt32(status); |
| return NO_ERROR; |
| } break; |
| case GET_VOLUME_SHAPER_STATE: { |
| CHECK_INTERFACE(IAudioTrack, data, reply); |
| int id; |
| status_t status = data.readInt32(&id); |
| if (status == NO_ERROR) { |
| sp<VolumeShaper::State> state = getVolumeShaperState(id); |
| if (state.get() != nullptr) { |
| status = state->writeToParcel(reply); |
| } |
| } |
| return NO_ERROR; |
| } break; |
| default: |
| return BBinder::onTransact(code, data, reply, flags); |
| } |
| } |
| |
| } // namespace android |