| /* |
| ** |
| ** 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, |
| RESERVED, // was MUTE |
| PAUSE, |
| ATTACH_AUX_EFFECT, |
| ALLOCATE_TIMED_BUFFER, |
| QUEUE_TIMED_BUFFER, |
| SET_MEDIA_TIME_TRANSFORM, |
| SET_PARAMETERS, |
| GET_TIMESTAMP, |
| SIGNAL, |
| }; |
| |
| 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()); |
| 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 allocateTimedBuffer(size_t size, sp<IMemory>* buffer) { |
| Parcel data, reply; |
| data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| data.writeInt64(size); |
| status_t status = remote()->transact(ALLOCATE_TIMED_BUFFER, |
| data, &reply); |
| if (status == NO_ERROR) { |
| status = reply.readInt32(); |
| if (status == NO_ERROR) { |
| *buffer = interface_cast<IMemory>(reply.readStrongBinder()); |
| if (*buffer != 0 && (*buffer)->pointer() == NULL) { |
| (*buffer).clear(); |
| } |
| } |
| } |
| return status; |
| } |
| |
| virtual status_t queueTimedBuffer(const sp<IMemory>& buffer, |
| int64_t pts) { |
| Parcel data, reply; |
| data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| data.writeStrongBinder(IInterface::asBinder(buffer)); |
| data.writeInt64(pts); |
| status_t status = remote()->transact(QUEUE_TIMED_BUFFER, |
| data, &reply); |
| if (status == NO_ERROR) { |
| status = reply.readInt32(); |
| } |
| return status; |
| } |
| |
| virtual status_t setMediaTimeTransform(const LinearTransform& xform, |
| int target) { |
| Parcel data, reply; |
| data.writeInterfaceToken(IAudioTrack::getInterfaceDescriptor()); |
| data.writeInt64(xform.a_zero); |
| data.writeInt64(xform.b_zero); |
| data.writeInt32(xform.a_to_b_numer); |
| data.writeInt32(xform.a_to_b_denom); |
| data.writeInt32(target); |
| status_t status = remote()->transact(SET_MEDIA_TIME_TRANSFORM, |
| data, &reply); |
| if (status == NO_ERROR) { |
| status = reply.readInt32(); |
| } |
| 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; |
| } |
| |
| 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); |
| } |
| }; |
| |
| 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 ALLOCATE_TIMED_BUFFER: { |
| CHECK_INTERFACE(IAudioTrack, data, reply); |
| sp<IMemory> buffer; |
| status_t status = allocateTimedBuffer(data.readInt64(), &buffer); |
| reply->writeInt32(status); |
| if (status == NO_ERROR) { |
| reply->writeStrongBinder(IInterface::asBinder(buffer)); |
| } |
| return NO_ERROR; |
| } break; |
| case QUEUE_TIMED_BUFFER: { |
| CHECK_INTERFACE(IAudioTrack, data, reply); |
| sp<IMemory> buffer = interface_cast<IMemory>( |
| data.readStrongBinder()); |
| uint64_t pts = data.readInt64(); |
| reply->writeInt32(queueTimedBuffer(buffer, pts)); |
| return NO_ERROR; |
| } break; |
| case SET_MEDIA_TIME_TRANSFORM: { |
| CHECK_INTERFACE(IAudioTrack, data, reply); |
| LinearTransform xform; |
| xform.a_zero = data.readInt64(); |
| xform.b_zero = data.readInt64(); |
| xform.a_to_b_numer = data.readInt32(); |
| xform.a_to_b_denom = data.readInt32(); |
| int target = data.readInt32(); |
| reply->writeInt32(setMediaTimeTransform(xform, target)); |
| 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 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; |
| default: |
| return BBinder::onTransact(code, data, reply, flags); |
| } |
| } |
| |
| } // namespace android |