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Diffstat (limited to 'libs/androidfw/DisplayEventDispatcher.cpp')
-rw-r--r-- | libs/androidfw/DisplayEventDispatcher.cpp | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/libs/androidfw/DisplayEventDispatcher.cpp b/libs/androidfw/DisplayEventDispatcher.cpp deleted file mode 100644 index d8a3f42690f4..000000000000 --- a/libs/androidfw/DisplayEventDispatcher.cpp +++ /dev/null @@ -1,153 +0,0 @@ -/* - * Copyright (C) 2015 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 "DisplayEventDispatcher" - -#include <cinttypes> -#include <cstdint> - -#include <androidfw/DisplayEventDispatcher.h> -#include <gui/DisplayEventReceiver.h> -#include <utils/Log.h> -#include <utils/Looper.h> - -#include <utils/Timers.h> - -namespace android { - -// Number of events to read at a time from the DisplayEventDispatcher pipe. -// The value should be large enough that we can quickly drain the pipe -// using just a few large reads. -static const size_t EVENT_BUFFER_SIZE = 100; - -DisplayEventDispatcher::DisplayEventDispatcher(const sp<Looper>& looper, - ISurfaceComposer::VsyncSource vsyncSource, - ISurfaceComposer::ConfigChanged configChanged) : - mLooper(looper), mReceiver(vsyncSource, configChanged), mWaitingForVsync(false) { - ALOGV("dispatcher %p ~ Initializing display event dispatcher.", this); -} - -status_t DisplayEventDispatcher::initialize() { - status_t result = mReceiver.initCheck(); - if (result) { - ALOGW("Failed to initialize display event receiver, status=%d", result); - return result; - } - - int rc = mLooper->addFd(mReceiver.getFd(), 0, Looper::EVENT_INPUT, - this, NULL); - if (rc < 0) { - return UNKNOWN_ERROR; - } - return OK; -} - -void DisplayEventDispatcher::dispose() { - ALOGV("dispatcher %p ~ Disposing display event dispatcher.", this); - - if (!mReceiver.initCheck()) { - mLooper->removeFd(mReceiver.getFd()); - } -} - -status_t DisplayEventDispatcher::scheduleVsync() { - if (!mWaitingForVsync) { - ALOGV("dispatcher %p ~ Scheduling vsync.", this); - - // Drain all pending events. - nsecs_t vsyncTimestamp; - PhysicalDisplayId vsyncDisplayId; - uint32_t vsyncCount; - if (processPendingEvents(&vsyncTimestamp, &vsyncDisplayId, &vsyncCount)) { - ALOGE("dispatcher %p ~ last event processed while scheduling was for %" PRId64 "", - this, ns2ms(static_cast<nsecs_t>(vsyncTimestamp))); - } - - status_t status = mReceiver.requestNextVsync(); - if (status) { - ALOGW("Failed to request next vsync, status=%d", status); - return status; - } - - mWaitingForVsync = true; - } - return OK; -} - -int DisplayEventDispatcher::handleEvent(int, int events, void*) { - if (events & (Looper::EVENT_ERROR | Looper::EVENT_HANGUP)) { - ALOGE("Display event receiver pipe was closed or an error occurred. " - "events=0x%x", events); - return 0; // remove the callback - } - - if (!(events & Looper::EVENT_INPUT)) { - ALOGW("Received spurious callback for unhandled poll event. " - "events=0x%x", events); - return 1; // keep the callback - } - - // Drain all pending events, keep the last vsync. - nsecs_t vsyncTimestamp; - PhysicalDisplayId vsyncDisplayId; - uint32_t vsyncCount; - if (processPendingEvents(&vsyncTimestamp, &vsyncDisplayId, &vsyncCount)) { - ALOGV("dispatcher %p ~ Vsync pulse: timestamp=%" PRId64 ", displayId=%" - ANDROID_PHYSICAL_DISPLAY_ID_FORMAT ", count=%d", - this, ns2ms(vsyncTimestamp), vsyncDisplayId, vsyncCount); - mWaitingForVsync = false; - dispatchVsync(vsyncTimestamp, vsyncDisplayId, vsyncCount); - } - - return 1; // keep the callback -} - -bool DisplayEventDispatcher::processPendingEvents( - nsecs_t* outTimestamp, PhysicalDisplayId* outDisplayId, uint32_t* outCount) { - bool gotVsync = false; - DisplayEventReceiver::Event buf[EVENT_BUFFER_SIZE]; - ssize_t n; - while ((n = mReceiver.getEvents(buf, EVENT_BUFFER_SIZE)) > 0) { - ALOGV("dispatcher %p ~ Read %d events.", this, int(n)); - for (ssize_t i = 0; i < n; i++) { - const DisplayEventReceiver::Event& ev = buf[i]; - switch (ev.header.type) { - case DisplayEventReceiver::DISPLAY_EVENT_VSYNC: - // Later vsync events will just overwrite the info from earlier - // ones. That's fine, we only care about the most recent. - gotVsync = true; - *outTimestamp = ev.header.timestamp; - *outDisplayId = ev.header.displayId; - *outCount = ev.vsync.count; - break; - case DisplayEventReceiver::DISPLAY_EVENT_HOTPLUG: - dispatchHotplug(ev.header.timestamp, ev.header.displayId, ev.hotplug.connected); - break; - case DisplayEventReceiver::DISPLAY_EVENT_CONFIG_CHANGED: - dispatchConfigChanged(ev.header.timestamp, ev.header.displayId, ev.config.configId); - break; - default: - ALOGW("dispatcher %p ~ ignoring unknown event type %#x", this, ev.header.type); - break; - } - } - } - if (n < 0) { - ALOGW("Failed to get events from display event dispatcher, status=%d", status_t(n)); - } - return gotVsync; -} -} |