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167 lines
5.0 KiB
167 lines
5.0 KiB
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "MediaAnalytics"
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#include <stdint.h>
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#include <inttypes.h>
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#include <sys/types.h>
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#include <binder/Parcel.h>
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#include <binder/IMemory.h>
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#include <binder/IPCThreadState.h>
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#include <utils/Errors.h> // for status_t
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#include <utils/List.h>
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#include <utils/Log.h>
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#include <utils/String8.h>
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#include <media/MediaAnalyticsItem.h>
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#include <media/IMediaAnalyticsService.h>
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#define DEBUGGING 0
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#define DEBUGGING_FLOW 0
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#define DEBUGGING_RETURNS 0
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namespace android {
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enum {
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GENERATE_UNIQUE_SESSIONID = IBinder::FIRST_CALL_TRANSACTION,
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SUBMIT_ITEM,
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};
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class BpMediaAnalyticsService: public BpInterface<IMediaAnalyticsService>
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{
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public:
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explicit BpMediaAnalyticsService(const sp<IBinder>& impl)
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: BpInterface<IMediaAnalyticsService>(impl)
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{
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}
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virtual MediaAnalyticsItem::SessionID_t generateUniqueSessionID() {
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Parcel data, reply;
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status_t err;
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MediaAnalyticsItem::SessionID_t sessionid =
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MediaAnalyticsItem::SessionIDInvalid;
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data.writeInterfaceToken(IMediaAnalyticsService::getInterfaceDescriptor());
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err = remote()->transact(GENERATE_UNIQUE_SESSIONID, data, &reply);
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if (err != NO_ERROR) {
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ALOGW("bad response from service for generateSessionId, err=%d", err);
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return MediaAnalyticsItem::SessionIDInvalid;
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}
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sessionid = reply.readInt64();
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if (DEBUGGING_RETURNS) {
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ALOGD("the caller gets a sessionid of %" PRId64 " back", sessionid);
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}
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return sessionid;
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}
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virtual MediaAnalyticsItem::SessionID_t submit(MediaAnalyticsItem *item, bool forcenew)
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{
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// have this record submit itself
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// this will be a binder call with appropriate timing
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// return value is the uuid that the system generated for it.
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// the return value 0 and -1 are reserved.
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// -1 to indicate that there was a problem recording...
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Parcel data, reply;
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status_t err;
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if (item == NULL) {
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return MediaAnalyticsItem::SessionIDInvalid;
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}
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data.writeInterfaceToken(IMediaAnalyticsService::getInterfaceDescriptor());
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if(DEBUGGING_FLOW) {
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ALOGD("client offers record: %s", item->toString().c_str());
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}
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data.writeBool(forcenew);
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item->writeToParcel(&data);
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err = remote()->transact(SUBMIT_ITEM, data, &reply);
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if (err != NO_ERROR) {
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ALOGW("bad response from service for submit, err=%d", err);
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return MediaAnalyticsItem::SessionIDInvalid;
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}
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// get an answer out of 'reply'
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int64_t sessionid = reply.readInt64();
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if (DEBUGGING_RETURNS) {
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ALOGD("the caller gets sessionid=%" PRId64 "", sessionid);
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}
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return sessionid;
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}
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};
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IMPLEMENT_META_INTERFACE(MediaAnalyticsService, "android.media.IMediaAnalyticsService");
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// ----------------------------------------------------------------------
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status_t BnMediaAnalyticsService::onTransact(
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uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
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{
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// get calling pid/tid
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IPCThreadState *ipc = IPCThreadState::self();
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int clientPid = ipc->getCallingPid();
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// permission checking
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if(DEBUGGING_FLOW) {
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ALOGD("running in service, code %d, pid %d; called from pid %d",
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code, getpid(), clientPid);
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}
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switch (code) {
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case GENERATE_UNIQUE_SESSIONID: {
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CHECK_INTERFACE(IMediaAnalyticsService, data, reply);
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MediaAnalyticsItem::SessionID_t sessionid = generateUniqueSessionID();
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reply->writeInt64(sessionid);
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return NO_ERROR;
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} break;
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case SUBMIT_ITEM: {
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CHECK_INTERFACE(IMediaAnalyticsService, data, reply);
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bool forcenew;
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MediaAnalyticsItem *item = MediaAnalyticsItem::create();
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data.readBool(&forcenew);
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item->readFromParcel(data);
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item->setPid(clientPid);
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// submit() takes over ownership of 'item'
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MediaAnalyticsItem::SessionID_t sessionid = submit(item, forcenew);
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reply->writeInt64(sessionid);
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return NO_ERROR;
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} break;
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default:
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return BBinder::onTransact(code, data, reply, flags);
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}
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}
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// ----------------------------------------------------------------------------
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} // namespace android
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