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      1 /*
      2  * Copyright (C) 2009 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #define LOG_TAG "IAudioFlingerClient"
     18 #include <utils/Log.h>
     19 
     20 #include <stdint.h>
     21 #include <sys/types.h>
     22 
     23 #include <binder/Parcel.h>
     24 
     25 #include <media/IAudioFlingerClient.h>
     26 #include <media/AudioSystem.h>
     27 
     28 namespace android {
     29 
     30 enum {
     31     IO_CONFIG_CHANGED = IBinder::FIRST_CALL_TRANSACTION
     32 };
     33 
     34 class BpAudioFlingerClient : public BpInterface<IAudioFlingerClient>
     35 {
     36 public:
     37     explicit BpAudioFlingerClient(const sp<IBinder>& impl)
     38         : BpInterface<IAudioFlingerClient>(impl)
     39     {
     40     }
     41 
     42     void ioConfigChanged(audio_io_config_event event, const sp<AudioIoDescriptor>& ioDesc)
     43     {
     44         Parcel data, reply;
     45         data.writeInterfaceToken(IAudioFlingerClient::getInterfaceDescriptor());
     46         data.writeInt32(event);
     47         data.writeInt32((int32_t)ioDesc->mIoHandle);
     48         data.write(&ioDesc->mPatch, sizeof(struct audio_patch));
     49         data.writeInt32(ioDesc->mSamplingRate);
     50         data.writeInt32(ioDesc->mFormat);
     51         data.writeInt32(ioDesc->mChannelMask);
     52         data.writeInt64(ioDesc->mFrameCount);
     53         data.writeInt64(ioDesc->mFrameCountHAL);
     54         data.writeInt32(ioDesc->mLatency);
     55         remote()->transact(IO_CONFIG_CHANGED, data, &reply, IBinder::FLAG_ONEWAY);
     56     }
     57 };
     58 
     59 IMPLEMENT_META_INTERFACE(AudioFlingerClient, "android.media.IAudioFlingerClient");
     60 
     61 // ----------------------------------------------------------------------
     62 
     63 status_t BnAudioFlingerClient::onTransact(
     64     uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
     65 {
     66     switch (code) {
     67     case IO_CONFIG_CHANGED: {
     68             CHECK_INTERFACE(IAudioFlingerClient, data, reply);
     69             audio_io_config_event event = (audio_io_config_event)data.readInt32();
     70             sp<AudioIoDescriptor> ioDesc = new AudioIoDescriptor();
     71             ioDesc->mIoHandle = (audio_io_handle_t) data.readInt32();
     72             data.read(&ioDesc->mPatch, sizeof(struct audio_patch));
     73             ioDesc->mSamplingRate = data.readInt32();
     74             ioDesc->mFormat = (audio_format_t) data.readInt32();
     75             ioDesc->mChannelMask = (audio_channel_mask_t) data.readInt32();
     76             ioDesc->mFrameCount = data.readInt64();
     77             ioDesc->mFrameCountHAL = data.readInt64();
     78             ioDesc->mLatency = data.readInt32();
     79             ioConfigChanged(event, ioDesc);
     80             return NO_ERROR;
     81         } break;
     82         default:
     83             return BBinder::onTransact(code, data, reply, flags);
     84     }
     85 }
     86 
     87 // ----------------------------------------------------------------------------
     88 
     89 } // namespace android
     90