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-rw-r--r--media/libstagefright/wifi-display/TimeSyncer.cpp337
1 files changed, 0 insertions, 337 deletions
diff --git a/media/libstagefright/wifi-display/TimeSyncer.cpp b/media/libstagefright/wifi-display/TimeSyncer.cpp
deleted file mode 100644
index 0f4d93a..0000000
--- a/media/libstagefright/wifi-display/TimeSyncer.cpp
+++ /dev/null
@@ -1,337 +0,0 @@
-/*
- * Copyright 2013, 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_NEBUG 0
-#define LOG_TAG "TimeSyncer"
-#include <utils/Log.h>
-
-#include "TimeSyncer.h"
-
-#include <media/stagefright/foundation/ABuffer.h>
-#include <media/stagefright/foundation/ADebug.h>
-#include <media/stagefright/foundation/AHandler.h>
-#include <media/stagefright/foundation/ALooper.h>
-#include <media/stagefright/foundation/AMessage.h>
-#include <media/stagefright/foundation/ANetworkSession.h>
-#include <media/stagefright/Utils.h>
-
-namespace android {
-
-TimeSyncer::TimeSyncer(
- const sp<ANetworkSession> &netSession, const sp<AMessage> &notify)
- : mNetSession(netSession),
- mNotify(notify),
- mIsServer(false),
- mConnected(false),
- mUDPSession(0),
- mSeqNo(0),
- mTotalTimeUs(0.0),
- mPendingT1(0ll),
- mTimeoutGeneration(0) {
-}
-
-TimeSyncer::~TimeSyncer() {
-}
-
-void TimeSyncer::startServer(unsigned localPort) {
- sp<AMessage> msg = new AMessage(kWhatStartServer, id());
- msg->setInt32("localPort", localPort);
- msg->post();
-}
-
-void TimeSyncer::startClient(const char *remoteHost, unsigned remotePort) {
- sp<AMessage> msg = new AMessage(kWhatStartClient, id());
- msg->setString("remoteHost", remoteHost);
- msg->setInt32("remotePort", remotePort);
- msg->post();
-}
-
-void TimeSyncer::onMessageReceived(const sp<AMessage> &msg) {
- switch (msg->what()) {
- case kWhatStartClient:
- {
- AString remoteHost;
- CHECK(msg->findString("remoteHost", &remoteHost));
-
- int32_t remotePort;
- CHECK(msg->findInt32("remotePort", &remotePort));
-
- sp<AMessage> notify = new AMessage(kWhatUDPNotify, id());
-
- CHECK_EQ((status_t)OK,
- mNetSession->createUDPSession(
- 0 /* localPort */,
- remoteHost.c_str(),
- remotePort,
- notify,
- &mUDPSession));
-
- postSendPacket();
- break;
- }
-
- case kWhatStartServer:
- {
- mIsServer = true;
-
- int32_t localPort;
- CHECK(msg->findInt32("localPort", &localPort));
-
- sp<AMessage> notify = new AMessage(kWhatUDPNotify, id());
-
- CHECK_EQ((status_t)OK,
- mNetSession->createUDPSession(
- localPort, notify, &mUDPSession));
-
- break;
- }
-
- case kWhatSendPacket:
- {
- if (mHistory.size() == 0) {
- ALOGI("starting batch");
- }
-
- TimeInfo ti;
- memset(&ti, 0, sizeof(ti));
-
- ti.mT1 = ALooper::GetNowUs();
-
- CHECK_EQ((status_t)OK,
- mNetSession->sendRequest(
- mUDPSession, &ti, sizeof(ti)));
-
- mPendingT1 = ti.mT1;
- postTimeout();
- break;
- }
-
- case kWhatTimedOut:
- {
- int32_t generation;
- CHECK(msg->findInt32("generation", &generation));
-
- if (generation != mTimeoutGeneration) {
- break;
- }
-
- ALOGI("timed out, sending another request");
- postSendPacket();
- break;
- }
-
- case kWhatUDPNotify:
- {
- int32_t reason;
- CHECK(msg->findInt32("reason", &reason));
-
- switch (reason) {
- case ANetworkSession::kWhatError:
- {
- int32_t sessionID;
- CHECK(msg->findInt32("sessionID", &sessionID));
-
- int32_t err;
- CHECK(msg->findInt32("err", &err));
-
- AString detail;
- CHECK(msg->findString("detail", &detail));
-
- ALOGE("An error occurred in session %d (%d, '%s/%s').",
- sessionID,
- err,
- detail.c_str(),
- strerror(-err));
-
- mNetSession->destroySession(sessionID);
-
- cancelTimeout();
-
- notifyError(err);
- break;
- }
-
- case ANetworkSession::kWhatDatagram:
- {
- int32_t sessionID;
- CHECK(msg->findInt32("sessionID", &sessionID));
-
- sp<ABuffer> packet;
- CHECK(msg->findBuffer("data", &packet));
-
- int64_t arrivalTimeUs;
- CHECK(packet->meta()->findInt64(
- "arrivalTimeUs", &arrivalTimeUs));
-
- CHECK_EQ(packet->size(), sizeof(TimeInfo));
-
- TimeInfo *ti = (TimeInfo *)packet->data();
-
- if (mIsServer) {
- if (!mConnected) {
- AString fromAddr;
- CHECK(msg->findString("fromAddr", &fromAddr));
-
- int32_t fromPort;
- CHECK(msg->findInt32("fromPort", &fromPort));
-
- CHECK_EQ((status_t)OK,
- mNetSession->connectUDPSession(
- mUDPSession, fromAddr.c_str(), fromPort));
-
- mConnected = true;
- }
-
- ti->mT2 = arrivalTimeUs;
- ti->mT3 = ALooper::GetNowUs();
-
- CHECK_EQ((status_t)OK,
- mNetSession->sendRequest(
- mUDPSession, ti, sizeof(*ti)));
- } else {
- if (ti->mT1 != mPendingT1) {
- break;
- }
-
- cancelTimeout();
- mPendingT1 = 0;
-
- ti->mT4 = arrivalTimeUs;
-
- // One way delay for a packet to travel from client
- // to server or back (assumed to be the same either way).
- int64_t delay =
- (ti->mT2 - ti->mT1 + ti->mT4 - ti->mT3) / 2;
-
- // Offset between the client clock (T1, T4) and the
- // server clock (T2, T3) timestamps.
- int64_t offset =
- (ti->mT2 - ti->mT1 - ti->mT4 + ti->mT3) / 2;
-
- mHistory.push_back(*ti);
-
- ALOGV("delay = %lld us,\toffset %lld us",
- delay,
- offset);
-
- if (mHistory.size() < kNumPacketsPerBatch) {
- postSendPacket(1000000ll / 30);
- } else {
- notifyOffset();
-
- ALOGI("batch done");
-
- mHistory.clear();
- postSendPacket(kBatchDelayUs);
- }
- }
- break;
- }
-
- default:
- TRESPASS();
- }
-
- break;
- }
-
- default:
- TRESPASS();
- }
-}
-
-void TimeSyncer::postSendPacket(int64_t delayUs) {
- (new AMessage(kWhatSendPacket, id()))->post(delayUs);
-}
-
-void TimeSyncer::postTimeout() {
- sp<AMessage> msg = new AMessage(kWhatTimedOut, id());
- msg->setInt32("generation", mTimeoutGeneration);
- msg->post(kTimeoutDelayUs);
-}
-
-void TimeSyncer::cancelTimeout() {
- ++mTimeoutGeneration;
-}
-
-void TimeSyncer::notifyError(status_t err) {
- if (mNotify == NULL) {
- looper()->stop();
- return;
- }
-
- sp<AMessage> notify = mNotify->dup();
- notify->setInt32("what", kWhatError);
- notify->setInt32("err", err);
- notify->post();
-}
-
-// static
-int TimeSyncer::CompareRountripTime(const TimeInfo *ti1, const TimeInfo *ti2) {
- int64_t rt1 = ti1->mT4 - ti1->mT1;
- int64_t rt2 = ti2->mT4 - ti2->mT1;
-
- if (rt1 < rt2) {
- return -1;
- } else if (rt1 > rt2) {
- return 1;
- }
-
- return 0;
-}
-
-void TimeSyncer::notifyOffset() {
- mHistory.sort(CompareRountripTime);
-
- int64_t sum = 0ll;
- size_t count = 0;
-
- // Only consider the third of the information associated with the best
- // (smallest) roundtrip times.
- for (size_t i = 0; i < mHistory.size() / 3; ++i) {
- const TimeInfo *ti = &mHistory[i];
-
-#if 0
- // One way delay for a packet to travel from client
- // to server or back (assumed to be the same either way).
- int64_t delay =
- (ti->mT2 - ti->mT1 + ti->mT4 - ti->mT3) / 2;
-#endif
-
- // Offset between the client clock (T1, T4) and the
- // server clock (T2, T3) timestamps.
- int64_t offset =
- (ti->mT2 - ti->mT1 - ti->mT4 + ti->mT3) / 2;
-
- ALOGV("(%d) RT: %lld us, offset: %lld us",
- i, ti->mT4 - ti->mT1, offset);
-
- sum += offset;
- ++count;
- }
-
- if (mNotify == NULL) {
- ALOGI("avg. offset is %lld", sum / count);
- return;
- }
-
- sp<AMessage> notify = mNotify->dup();
- notify->setInt32("what", kWhatTimeOffset);
- notify->setInt64("offset", sum / count);
- notify->post();
-}
-
-} // namespace android
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