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authorwolfbeast <mcwerewolf@gmail.com>2018-05-12 11:09:44 +0200
committerwolfbeast <mcwerewolf@gmail.com>2018-05-12 11:09:44 +0200
commitcfe5ef4ac7cd59f094b538252161ad74223c47da (patch)
treee5c0ee7e70db84bd2bfc6062784006769e9df730 /widget/gonk/libui/InputTransport.cpp
parent28cf922aa9af4d4b8e0a3ce91dc1270a55986909 (diff)
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Remove Gonk build directories
Diffstat (limited to 'widget/gonk/libui/InputTransport.cpp')
-rw-r--r--widget/gonk/libui/InputTransport.cpp957
1 files changed, 0 insertions, 957 deletions
diff --git a/widget/gonk/libui/InputTransport.cpp b/widget/gonk/libui/InputTransport.cpp
deleted file mode 100644
index 3f0fcb047..000000000
--- a/widget/gonk/libui/InputTransport.cpp
+++ /dev/null
@@ -1,957 +0,0 @@
-//
-// Copyright 2010 The Android Open Source Project
-//
-// Provides a shared memory transport for input events.
-//
-#define LOG_TAG "InputTransport"
-
-//#define LOG_NDEBUG 0
-
-// Log debug messages about channel messages (send message, receive message)
-#define DEBUG_CHANNEL_MESSAGES 0
-
-// Log debug messages whenever InputChannel objects are created/destroyed
-#define DEBUG_CHANNEL_LIFECYCLE 0
-
-// Log debug messages about transport actions
-#define DEBUG_TRANSPORT_ACTIONS 0
-
-// Log debug messages about touch event resampling
-#define DEBUG_RESAMPLING 0
-
-
-#include "cutils_log.h"
-#include <cutils/properties.h>
-#include <errno.h>
-#include <fcntl.h>
-#include "InputTransport.h"
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <math.h>
-
-
-namespace android {
-
-// Socket buffer size. The default is typically about 128KB, which is much larger than
-// we really need. So we make it smaller. It just needs to be big enough to hold
-// a few dozen large multi-finger motion events in the case where an application gets
-// behind processing touches.
-static const size_t SOCKET_BUFFER_SIZE = 32 * 1024;
-
-// Nanoseconds per milliseconds.
-static const nsecs_t NANOS_PER_MS = 1000000;
-
-// Latency added during resampling. A few milliseconds doesn't hurt much but
-// reduces the impact of mispredicted touch positions.
-static const nsecs_t RESAMPLE_LATENCY = 5 * NANOS_PER_MS;
-
-// Minimum time difference between consecutive samples before attempting to resample.
-static const nsecs_t RESAMPLE_MIN_DELTA = 2 * NANOS_PER_MS;
-
-// Maximum time to predict forward from the last known state, to avoid predicting too
-// far into the future. This time is further bounded by 50% of the last time delta.
-static const nsecs_t RESAMPLE_MAX_PREDICTION = 8 * NANOS_PER_MS;
-
-template<typename T>
-inline static T min(const T& a, const T& b) {
- return a < b ? a : b;
-}
-
-inline static float lerp(float a, float b, float alpha) {
- return a + alpha * (b - a);
-}
-
-// --- InputMessage ---
-
-bool InputMessage::isValid(size_t actualSize) const {
- if (size() == actualSize) {
- switch (header.type) {
- case TYPE_KEY:
- return true;
- case TYPE_MOTION:
- return body.motion.pointerCount > 0
- && body.motion.pointerCount <= MAX_POINTERS;
- case TYPE_FINISHED:
- return true;
- }
- }
- return false;
-}
-
-size_t InputMessage::size() const {
- switch (header.type) {
- case TYPE_KEY:
- return sizeof(Header) + body.key.size();
- case TYPE_MOTION:
- return sizeof(Header) + body.motion.size();
- case TYPE_FINISHED:
- return sizeof(Header) + body.finished.size();
- }
- return sizeof(Header);
-}
-
-
-// --- InputChannel ---
-
-InputChannel::InputChannel(const String8& name, int fd) :
- mName(name), mFd(fd) {
-#if DEBUG_CHANNEL_LIFECYCLE
- ALOGD("Input channel constructed: name='%s', fd=%d",
- mName.string(), fd);
-#endif
-
- int result = fcntl(mFd, F_SETFL, O_NONBLOCK);
- LOG_ALWAYS_FATAL_IF(result != 0, "channel '%s' ~ Could not make socket "
- "non-blocking. errno=%d", mName.string(), errno);
-}
-
-InputChannel::~InputChannel() {
-#if DEBUG_CHANNEL_LIFECYCLE
- ALOGD("Input channel destroyed: name='%s', fd=%d",
- mName.string(), mFd);
-#endif
-
- ::close(mFd);
-}
-
-status_t InputChannel::openInputChannelPair(const String8& name,
- sp<InputChannel>& outServerChannel, sp<InputChannel>& outClientChannel) {
- int sockets[2];
- if (socketpair(AF_UNIX, SOCK_SEQPACKET, 0, sockets)) {
- status_t result = -errno;
- ALOGE("channel '%s' ~ Could not create socket pair. errno=%d",
- name.string(), errno);
- outServerChannel.clear();
- outClientChannel.clear();
- return result;
- }
-
- int bufferSize = SOCKET_BUFFER_SIZE;
- setsockopt(sockets[0], SOL_SOCKET, SO_SNDBUF, &bufferSize, sizeof(bufferSize));
- setsockopt(sockets[0], SOL_SOCKET, SO_RCVBUF, &bufferSize, sizeof(bufferSize));
- setsockopt(sockets[1], SOL_SOCKET, SO_SNDBUF, &bufferSize, sizeof(bufferSize));
- setsockopt(sockets[1], SOL_SOCKET, SO_RCVBUF, &bufferSize, sizeof(bufferSize));
-
- String8 serverChannelName = name;
- serverChannelName.append(" (server)");
- outServerChannel = new InputChannel(serverChannelName, sockets[0]);
-
- String8 clientChannelName = name;
- clientChannelName.append(" (client)");
- outClientChannel = new InputChannel(clientChannelName, sockets[1]);
- return OK;
-}
-
-status_t InputChannel::sendMessage(const InputMessage* msg) {
- size_t msgLength = msg->size();
- ssize_t nWrite;
- do {
- nWrite = ::send(mFd, msg, msgLength, MSG_DONTWAIT | MSG_NOSIGNAL);
- } while (nWrite == -1 && errno == EINTR);
-
- if (nWrite < 0) {
- int error = errno;
-#if DEBUG_CHANNEL_MESSAGES
- ALOGD("channel '%s' ~ error sending message of type %d, errno=%d", mName.string(),
- msg->header.type, error);
-#endif
- if (error == EAGAIN || error == EWOULDBLOCK) {
- return WOULD_BLOCK;
- }
- if (error == EPIPE || error == ENOTCONN) {
- return DEAD_OBJECT;
- }
- return -error;
- }
-
- if (size_t(nWrite) != msgLength) {
-#if DEBUG_CHANNEL_MESSAGES
- ALOGD("channel '%s' ~ error sending message type %d, send was incomplete",
- mName.string(), msg->header.type);
-#endif
- return DEAD_OBJECT;
- }
-
-#if DEBUG_CHANNEL_MESSAGES
- ALOGD("channel '%s' ~ sent message of type %d", mName.string(), msg->header.type);
-#endif
- return OK;
-}
-
-status_t InputChannel::receiveMessage(InputMessage* msg) {
- ssize_t nRead;
- do {
- nRead = ::recv(mFd, msg, sizeof(InputMessage), MSG_DONTWAIT);
- } while (nRead == -1 && errno == EINTR);
-
- if (nRead < 0) {
- int error = errno;
-#if DEBUG_CHANNEL_MESSAGES
- ALOGD("channel '%s' ~ receive message failed, errno=%d", mName.string(), errno);
-#endif
- if (error == EAGAIN || error == EWOULDBLOCK) {
- return WOULD_BLOCK;
- }
- if (error == EPIPE || error == ENOTCONN) {
- return DEAD_OBJECT;
- }
- return -error;
- }
-
- if (nRead == 0) { // check for EOF
-#if DEBUG_CHANNEL_MESSAGES
- ALOGD("channel '%s' ~ receive message failed because peer was closed", mName.string());
-#endif
- return DEAD_OBJECT;
- }
-
- if (!msg->isValid(nRead)) {
-#if DEBUG_CHANNEL_MESSAGES
- ALOGD("channel '%s' ~ received invalid message", mName.string());
-#endif
- return BAD_VALUE;
- }
-
-#if DEBUG_CHANNEL_MESSAGES
- ALOGD("channel '%s' ~ received message of type %d", mName.string(), msg->header.type);
-#endif
- return OK;
-}
-
-sp<InputChannel> InputChannel::dup() const {
- int fd = ::dup(getFd());
- return fd >= 0 ? new InputChannel(getName(), fd) : NULL;
-}
-
-
-// --- InputPublisher ---
-
-InputPublisher::InputPublisher(const sp<InputChannel>& channel) :
- mChannel(channel) {
-}
-
-InputPublisher::~InputPublisher() {
-}
-
-status_t InputPublisher::publishKeyEvent(
- uint32_t seq,
- int32_t deviceId,
- int32_t source,
- int32_t action,
- int32_t flags,
- int32_t keyCode,
- int32_t scanCode,
- int32_t metaState,
- int32_t repeatCount,
- nsecs_t downTime,
- nsecs_t eventTime) {
-#if DEBUG_TRANSPORT_ACTIONS
- ALOGD("channel '%s' publisher ~ publishKeyEvent: seq=%u, deviceId=%d, source=0x%x, "
- "action=0x%x, flags=0x%x, keyCode=%d, scanCode=%d, metaState=0x%x, repeatCount=%d,"
- "downTime=%lld, eventTime=%lld",
- mChannel->getName().string(), seq,
- deviceId, source, action, flags, keyCode, scanCode, metaState, repeatCount,
- downTime, eventTime);
-#endif
-
- if (!seq) {
- ALOGE("Attempted to publish a key event with sequence number 0.");
- return BAD_VALUE;
- }
-
- InputMessage msg;
- msg.header.type = InputMessage::TYPE_KEY;
- msg.body.key.seq = seq;
- msg.body.key.deviceId = deviceId;
- msg.body.key.source = source;
- msg.body.key.action = action;
- msg.body.key.flags = flags;
- msg.body.key.keyCode = keyCode;
- msg.body.key.scanCode = scanCode;
- msg.body.key.metaState = metaState;
- msg.body.key.repeatCount = repeatCount;
- msg.body.key.downTime = downTime;
- msg.body.key.eventTime = eventTime;
- return mChannel->sendMessage(&msg);
-}
-
-status_t InputPublisher::publishMotionEvent(
- uint32_t seq,
- int32_t deviceId,
- int32_t source,
- int32_t action,
- int32_t flags,
- int32_t edgeFlags,
- int32_t metaState,
- int32_t buttonState,
- float xOffset,
- float yOffset,
- float xPrecision,
- float yPrecision,
- nsecs_t downTime,
- nsecs_t eventTime,
- size_t pointerCount,
- const PointerProperties* pointerProperties,
- const PointerCoords* pointerCoords) {
-#if DEBUG_TRANSPORT_ACTIONS
- ALOGD("channel '%s' publisher ~ publishMotionEvent: seq=%u, deviceId=%d, source=0x%x, "
- "action=0x%x, flags=0x%x, edgeFlags=0x%x, metaState=0x%x, buttonState=0x%x, "
- "xOffset=%f, yOffset=%f, "
- "xPrecision=%f, yPrecision=%f, downTime=%lld, eventTime=%lld, "
- "pointerCount=%d",
- mChannel->getName().string(), seq,
- deviceId, source, action, flags, edgeFlags, metaState, buttonState,
- xOffset, yOffset, xPrecision, yPrecision, downTime, eventTime, pointerCount);
-#endif
-
- if (!seq) {
- ALOGE("Attempted to publish a motion event with sequence number 0.");
- return BAD_VALUE;
- }
-
- if (pointerCount > MAX_POINTERS || pointerCount < 1) {
- ALOGE("channel '%s' publisher ~ Invalid number of pointers provided: %d.",
- mChannel->getName().string(), pointerCount);
- return BAD_VALUE;
- }
-
- InputMessage msg;
- msg.header.type = InputMessage::TYPE_MOTION;
- msg.body.motion.seq = seq;
- msg.body.motion.deviceId = deviceId;
- msg.body.motion.source = source;
- msg.body.motion.action = action;
- msg.body.motion.flags = flags;
- msg.body.motion.edgeFlags = edgeFlags;
- msg.body.motion.metaState = metaState;
- msg.body.motion.buttonState = buttonState;
- msg.body.motion.xOffset = xOffset;
- msg.body.motion.yOffset = yOffset;
- msg.body.motion.xPrecision = xPrecision;
- msg.body.motion.yPrecision = yPrecision;
- msg.body.motion.downTime = downTime;
- msg.body.motion.eventTime = eventTime;
- msg.body.motion.pointerCount = pointerCount;
- for (size_t i = 0; i < pointerCount; i++) {
- msg.body.motion.pointers[i].properties.copyFrom(pointerProperties[i]);
- msg.body.motion.pointers[i].coords.copyFrom(pointerCoords[i]);
- }
- return mChannel->sendMessage(&msg);
-}
-
-status_t InputPublisher::receiveFinishedSignal(uint32_t* outSeq, bool* outHandled) {
-#if DEBUG_TRANSPORT_ACTIONS
- ALOGD("channel '%s' publisher ~ receiveFinishedSignal",
- mChannel->getName().string());
-#endif
-
- InputMessage msg;
- status_t result = mChannel->receiveMessage(&msg);
- if (result) {
- *outSeq = 0;
- *outHandled = false;
- return result;
- }
- if (msg.header.type != InputMessage::TYPE_FINISHED) {
- ALOGE("channel '%s' publisher ~ Received unexpected message of type %d from consumer",
- mChannel->getName().string(), msg.header.type);
- return UNKNOWN_ERROR;
- }
- *outSeq = msg.body.finished.seq;
- *outHandled = msg.body.finished.handled;
- return OK;
-}
-
-// --- InputConsumer ---
-
-InputConsumer::InputConsumer(const sp<InputChannel>& channel) :
- mResampleTouch(isTouchResamplingEnabled()),
- mChannel(channel), mMsgDeferred(false) {
-}
-
-InputConsumer::~InputConsumer() {
-}
-
-bool InputConsumer::isTouchResamplingEnabled() {
- char value[PROPERTY_VALUE_MAX];
- int length = property_get("debug.inputconsumer.resample", value, NULL);
- if (length > 0) {
- if (!strcmp("0", value)) {
- return false;
- }
- if (strcmp("1", value)) {
- ALOGD("Unrecognized property value for 'debug.inputconsumer.resample'. "
- "Use '1' or '0'.");
- }
- }
- return true;
-}
-
-status_t InputConsumer::consume(InputEventFactoryInterface* factory,
- bool consumeBatches, nsecs_t frameTime, uint32_t* outSeq, InputEvent** outEvent) {
-#if DEBUG_TRANSPORT_ACTIONS
- ALOGD("channel '%s' consumer ~ consume: consumeBatches=%s, frameTime=%lld",
- mChannel->getName().string(), consumeBatches ? "true" : "false", frameTime);
-#endif
-
- *outSeq = 0;
- *outEvent = NULL;
-
- // Fetch the next input message.
- // Loop until an event can be returned or no additional events are received.
- while (!*outEvent) {
- if (mMsgDeferred) {
- // mMsg contains a valid input message from the previous call to consume
- // that has not yet been processed.
- mMsgDeferred = false;
- } else {
- // Receive a fresh message.
- status_t result = mChannel->receiveMessage(&mMsg);
- if (result) {
- // Consume the next batched event unless batches are being held for later.
- if (consumeBatches || result != WOULD_BLOCK) {
- result = consumeBatch(factory, frameTime, outSeq, outEvent);
- if (*outEvent) {
-#if DEBUG_TRANSPORT_ACTIONS
- ALOGD("channel '%s' consumer ~ consumed batch event, seq=%u",
- mChannel->getName().string(), *outSeq);
-#endif
- break;
- }
- }
- return result;
- }
- }
-
- switch (mMsg.header.type) {
- case InputMessage::TYPE_KEY: {
- KeyEvent* keyEvent = factory->createKeyEvent();
- if (!keyEvent) return NO_MEMORY;
-
- initializeKeyEvent(keyEvent, &mMsg);
- *outSeq = mMsg.body.key.seq;
- *outEvent = keyEvent;
-#if DEBUG_TRANSPORT_ACTIONS
- ALOGD("channel '%s' consumer ~ consumed key event, seq=%u",
- mChannel->getName().string(), *outSeq);
-#endif
- break;
- }
-
- case AINPUT_EVENT_TYPE_MOTION: {
- ssize_t batchIndex = findBatch(mMsg.body.motion.deviceId, mMsg.body.motion.source);
- if (batchIndex >= 0) {
- Batch& batch = mBatches.editItemAt(batchIndex);
- if (canAddSample(batch, &mMsg)) {
- batch.samples.push(mMsg);
-#if DEBUG_TRANSPORT_ACTIONS
- ALOGD("channel '%s' consumer ~ appended to batch event",
- mChannel->getName().string());
-#endif
- break;
- } else {
- // We cannot append to the batch in progress, so we need to consume
- // the previous batch right now and defer the new message until later.
- mMsgDeferred = true;
- status_t result = consumeSamples(factory,
- batch, batch.samples.size(), outSeq, outEvent);
- mBatches.removeAt(batchIndex);
- if (result) {
- return result;
- }
-#if DEBUG_TRANSPORT_ACTIONS
- ALOGD("channel '%s' consumer ~ consumed batch event and "
- "deferred current event, seq=%u",
- mChannel->getName().string(), *outSeq);
-#endif
- break;
- }
- }
-
- // Start a new batch if needed.
- if (mMsg.body.motion.action == AMOTION_EVENT_ACTION_MOVE
- || mMsg.body.motion.action == AMOTION_EVENT_ACTION_HOVER_MOVE) {
- mBatches.push();
- Batch& batch = mBatches.editTop();
- batch.samples.push(mMsg);
-#if DEBUG_TRANSPORT_ACTIONS
- ALOGD("channel '%s' consumer ~ started batch event",
- mChannel->getName().string());
-#endif
- break;
- }
-
- MotionEvent* motionEvent = factory->createMotionEvent();
- if (! motionEvent) return NO_MEMORY;
-
- updateTouchState(&mMsg);
- initializeMotionEvent(motionEvent, &mMsg);
- *outSeq = mMsg.body.motion.seq;
- *outEvent = motionEvent;
-#if DEBUG_TRANSPORT_ACTIONS
- ALOGD("channel '%s' consumer ~ consumed motion event, seq=%u",
- mChannel->getName().string(), *outSeq);
-#endif
- break;
- }
-
- default:
- ALOGE("channel '%s' consumer ~ Received unexpected message of type %d",
- mChannel->getName().string(), mMsg.header.type);
- return UNKNOWN_ERROR;
- }
- }
- return OK;
-}
-
-status_t InputConsumer::consumeBatch(InputEventFactoryInterface* factory,
- nsecs_t frameTime, uint32_t* outSeq, InputEvent** outEvent) {
- status_t result;
- for (size_t i = mBatches.size(); i-- > 0; ) {
- Batch& batch = mBatches.editItemAt(i);
- if (frameTime < 0) {
- result = consumeSamples(factory, batch, batch.samples.size(),
- outSeq, outEvent);
- mBatches.removeAt(i);
- return result;
- }
-
- nsecs_t sampleTime = frameTime - RESAMPLE_LATENCY;
- ssize_t split = findSampleNoLaterThan(batch, sampleTime);
- if (split < 0) {
- continue;
- }
-
- result = consumeSamples(factory, batch, split + 1, outSeq, outEvent);
- const InputMessage* next;
- if (batch.samples.isEmpty()) {
- mBatches.removeAt(i);
- next = NULL;
- } else {
- next = &batch.samples.itemAt(0);
- }
- if (!result) {
- resampleTouchState(sampleTime, static_cast<MotionEvent*>(*outEvent), next);
- }
- return result;
- }
-
- return WOULD_BLOCK;
-}
-
-status_t InputConsumer::consumeSamples(InputEventFactoryInterface* factory,
- Batch& batch, size_t count, uint32_t* outSeq, InputEvent** outEvent) {
- MotionEvent* motionEvent = factory->createMotionEvent();
- if (! motionEvent) return NO_MEMORY;
-
- uint32_t chain = 0;
- for (size_t i = 0; i < count; i++) {
- InputMessage& msg = batch.samples.editItemAt(i);
- updateTouchState(&msg);
- if (i) {
- SeqChain seqChain;
- seqChain.seq = msg.body.motion.seq;
- seqChain.chain = chain;
- mSeqChains.push(seqChain);
- addSample(motionEvent, &msg);
- } else {
- initializeMotionEvent(motionEvent, &msg);
- }
- chain = msg.body.motion.seq;
- }
- batch.samples.removeItemsAt(0, count);
-
- *outSeq = chain;
- *outEvent = motionEvent;
- return OK;
-}
-
-void InputConsumer::updateTouchState(InputMessage* msg) {
- if (!mResampleTouch ||
- !(msg->body.motion.source & AINPUT_SOURCE_CLASS_POINTER)) {
- return;
- }
-
- int32_t deviceId = msg->body.motion.deviceId;
- int32_t source = msg->body.motion.source;
- nsecs_t eventTime = msg->body.motion.eventTime;
-
- // Update the touch state history to incorporate the new input message.
- // If the message is in the past relative to the most recently produced resampled
- // touch, then use the resampled time and coordinates instead.
- switch (msg->body.motion.action & AMOTION_EVENT_ACTION_MASK) {
- case AMOTION_EVENT_ACTION_DOWN: {
- ssize_t index = findTouchState(deviceId, source);
- if (index < 0) {
- mTouchStates.push();
- index = mTouchStates.size() - 1;
- }
- TouchState& touchState = mTouchStates.editItemAt(index);
- touchState.initialize(deviceId, source);
- touchState.addHistory(msg);
- break;
- }
-
- case AMOTION_EVENT_ACTION_MOVE: {
- ssize_t index = findTouchState(deviceId, source);
- if (index >= 0) {
- TouchState& touchState = mTouchStates.editItemAt(index);
- touchState.addHistory(msg);
- if (eventTime < touchState.lastResample.eventTime) {
- rewriteMessage(touchState, msg);
- } else {
- touchState.lastResample.idBits.clear();
- }
- }
- break;
- }
-
- case AMOTION_EVENT_ACTION_POINTER_DOWN: {
- ssize_t index = findTouchState(deviceId, source);
- if (index >= 0) {
- TouchState& touchState = mTouchStates.editItemAt(index);
- touchState.lastResample.idBits.clearBit(msg->body.motion.getActionId());
- rewriteMessage(touchState, msg);
- }
- break;
- }
-
- case AMOTION_EVENT_ACTION_POINTER_UP: {
- ssize_t index = findTouchState(deviceId, source);
- if (index >= 0) {
- TouchState& touchState = mTouchStates.editItemAt(index);
- rewriteMessage(touchState, msg);
- touchState.lastResample.idBits.clearBit(msg->body.motion.getActionId());
- }
- break;
- }
-
- case AMOTION_EVENT_ACTION_SCROLL: {
- ssize_t index = findTouchState(deviceId, source);
- if (index >= 0) {
- const TouchState& touchState = mTouchStates.itemAt(index);
- rewriteMessage(touchState, msg);
- }
- break;
- }
-
- case AMOTION_EVENT_ACTION_UP:
- case AMOTION_EVENT_ACTION_CANCEL: {
- ssize_t index = findTouchState(deviceId, source);
- if (index >= 0) {
- const TouchState& touchState = mTouchStates.itemAt(index);
- rewriteMessage(touchState, msg);
- mTouchStates.removeAt(index);
- }
- break;
- }
- }
-}
-
-void InputConsumer::rewriteMessage(const TouchState& state, InputMessage* msg) {
- for (size_t i = 0; i < msg->body.motion.pointerCount; i++) {
- uint32_t id = msg->body.motion.pointers[i].properties.id;
- if (state.lastResample.idBits.hasBit(id)) {
- PointerCoords& msgCoords = msg->body.motion.pointers[i].coords;
- const PointerCoords& resampleCoords = state.lastResample.getPointerById(id);
-#if DEBUG_RESAMPLING
- ALOGD("[%d] - rewrite (%0.3f, %0.3f), old (%0.3f, %0.3f)", id,
- resampleCoords.getAxisValue(AMOTION_EVENT_AXIS_X),
- resampleCoords.getAxisValue(AMOTION_EVENT_AXIS_Y),
- msgCoords.getAxisValue(AMOTION_EVENT_AXIS_X),
- msgCoords.getAxisValue(AMOTION_EVENT_AXIS_Y));
-#endif
- msgCoords.setAxisValue(AMOTION_EVENT_AXIS_X, resampleCoords.getX());
- msgCoords.setAxisValue(AMOTION_EVENT_AXIS_Y, resampleCoords.getY());
- }
- }
-}
-
-void InputConsumer::resampleTouchState(nsecs_t sampleTime, MotionEvent* event,
- const InputMessage* next) {
- if (!mResampleTouch
- || !(event->getSource() & AINPUT_SOURCE_CLASS_POINTER)
- || event->getAction() != AMOTION_EVENT_ACTION_MOVE) {
- return;
- }
-
- ssize_t index = findTouchState(event->getDeviceId(), event->getSource());
- if (index < 0) {
-#if DEBUG_RESAMPLING
- ALOGD("Not resampled, no touch state for device.");
-#endif
- return;
- }
-
- TouchState& touchState = mTouchStates.editItemAt(index);
- if (touchState.historySize < 1) {
-#if DEBUG_RESAMPLING
- ALOGD("Not resampled, no history for device.");
-#endif
- return;
- }
-
- // Ensure that the current sample has all of the pointers that need to be reported.
- const History* current = touchState.getHistory(0);
- size_t pointerCount = event->getPointerCount();
- for (size_t i = 0; i < pointerCount; i++) {
- uint32_t id = event->getPointerId(i);
- if (!current->idBits.hasBit(id)) {
-#if DEBUG_RESAMPLING
- ALOGD("Not resampled, missing id %d", id);
-#endif
- return;
- }
- }
-
- // Find the data to use for resampling.
- const History* other;
- History future;
- float alpha;
- if (next) {
- // Interpolate between current sample and future sample.
- // So current->eventTime <= sampleTime <= future.eventTime.
- future.initializeFrom(next);
- other = &future;
- nsecs_t delta = future.eventTime - current->eventTime;
- if (delta < RESAMPLE_MIN_DELTA) {
-#if DEBUG_RESAMPLING
- ALOGD("Not resampled, delta time is %lld ns.", delta);
-#endif
- return;
- }
- alpha = float(sampleTime - current->eventTime) / delta;
- } else if (touchState.historySize >= 2) {
- // Extrapolate future sample using current sample and past sample.
- // So other->eventTime <= current->eventTime <= sampleTime.
- other = touchState.getHistory(1);
- nsecs_t delta = current->eventTime - other->eventTime;
- if (delta < RESAMPLE_MIN_DELTA) {
-#if DEBUG_RESAMPLING
- ALOGD("Not resampled, delta time is %lld ns.", delta);
-#endif
- return;
- }
- nsecs_t maxPredict = current->eventTime + min(delta / 2, RESAMPLE_MAX_PREDICTION);
- if (sampleTime > maxPredict) {
-#if DEBUG_RESAMPLING
- ALOGD("Sample time is too far in the future, adjusting prediction "
- "from %lld to %lld ns.",
- sampleTime - current->eventTime, maxPredict - current->eventTime);
-#endif
- sampleTime = maxPredict;
- }
- alpha = float(current->eventTime - sampleTime) / delta;
- } else {
-#if DEBUG_RESAMPLING
- ALOGD("Not resampled, insufficient data.");
-#endif
- return;
- }
-
- // Resample touch coordinates.
- touchState.lastResample.eventTime = sampleTime;
- touchState.lastResample.idBits.clear();
- for (size_t i = 0; i < pointerCount; i++) {
- uint32_t id = event->getPointerId(i);
- touchState.lastResample.idToIndex[id] = i;
- touchState.lastResample.idBits.markBit(id);
- PointerCoords& resampledCoords = touchState.lastResample.pointers[i];
- const PointerCoords& currentCoords = current->getPointerById(id);
- if (other->idBits.hasBit(id)
- && shouldResampleTool(event->getToolType(i))) {
- const PointerCoords& otherCoords = other->getPointerById(id);
- resampledCoords.copyFrom(currentCoords);
- resampledCoords.setAxisValue(AMOTION_EVENT_AXIS_X,
- lerp(currentCoords.getX(), otherCoords.getX(), alpha));
- resampledCoords.setAxisValue(AMOTION_EVENT_AXIS_Y,
- lerp(currentCoords.getY(), otherCoords.getY(), alpha));
-#if DEBUG_RESAMPLING
- ALOGD("[%d] - out (%0.3f, %0.3f), cur (%0.3f, %0.3f), "
- "other (%0.3f, %0.3f), alpha %0.3f",
- id, resampledCoords.getX(), resampledCoords.getY(),
- currentCoords.getX(), currentCoords.getY(),
- otherCoords.getX(), otherCoords.getY(),
- alpha);
-#endif
- } else {
- resampledCoords.copyFrom(currentCoords);
-#if DEBUG_RESAMPLING
- ALOGD("[%d] - out (%0.3f, %0.3f), cur (%0.3f, %0.3f)",
- id, resampledCoords.getX(), resampledCoords.getY(),
- currentCoords.getX(), currentCoords.getY());
-#endif
- }
- }
-
- event->addSample(sampleTime, touchState.lastResample.pointers);
-}
-
-bool InputConsumer::shouldResampleTool(int32_t toolType) {
- return toolType == AMOTION_EVENT_TOOL_TYPE_FINGER
- || toolType == AMOTION_EVENT_TOOL_TYPE_UNKNOWN;
-}
-
-status_t InputConsumer::sendFinishedSignal(uint32_t seq, bool handled) {
-#if DEBUG_TRANSPORT_ACTIONS
- ALOGD("channel '%s' consumer ~ sendFinishedSignal: seq=%u, handled=%s",
- mChannel->getName().string(), seq, handled ? "true" : "false");
-#endif
-
- if (!seq) {
- ALOGE("Attempted to send a finished signal with sequence number 0.");
- return BAD_VALUE;
- }
-
- // Send finished signals for the batch sequence chain first.
- size_t seqChainCount = mSeqChains.size();
- if (seqChainCount) {
- uint32_t currentSeq = seq;
- uint32_t chainSeqs[seqChainCount];
- size_t chainIndex = 0;
- for (size_t i = seqChainCount; i-- > 0; ) {
- const SeqChain& seqChain = mSeqChains.itemAt(i);
- if (seqChain.seq == currentSeq) {
- currentSeq = seqChain.chain;
- chainSeqs[chainIndex++] = currentSeq;
- mSeqChains.removeAt(i);
- }
- }
- status_t status = OK;
- while (!status && chainIndex-- > 0) {
- status = sendUnchainedFinishedSignal(chainSeqs[chainIndex], handled);
- }
- if (status) {
- // An error occurred so at least one signal was not sent, reconstruct the chain.
- do {
- SeqChain seqChain;
- seqChain.seq = chainIndex != 0 ? chainSeqs[chainIndex - 1] : seq;
- seqChain.chain = chainSeqs[chainIndex];
- mSeqChains.push(seqChain);
- } while (chainIndex-- > 0);
- return status;
- }
- }
-
- // Send finished signal for the last message in the batch.
- return sendUnchainedFinishedSignal(seq, handled);
-}
-
-status_t InputConsumer::sendUnchainedFinishedSignal(uint32_t seq, bool handled) {
- InputMessage msg;
- msg.header.type = InputMessage::TYPE_FINISHED;
- msg.body.finished.seq = seq;
- msg.body.finished.handled = handled;
- return mChannel->sendMessage(&msg);
-}
-
-bool InputConsumer::hasDeferredEvent() const {
- return mMsgDeferred;
-}
-
-bool InputConsumer::hasPendingBatch() const {
- return !mBatches.isEmpty();
-}
-
-ssize_t InputConsumer::findBatch(int32_t deviceId, int32_t source) const {
- for (size_t i = 0; i < mBatches.size(); i++) {
- const Batch& batch = mBatches.itemAt(i);
- const InputMessage& head = batch.samples.itemAt(0);
- if (head.body.motion.deviceId == deviceId && head.body.motion.source == source) {
- return i;
- }
- }
- return -1;
-}
-
-ssize_t InputConsumer::findTouchState(int32_t deviceId, int32_t source) const {
- for (size_t i = 0; i < mTouchStates.size(); i++) {
- const TouchState& touchState = mTouchStates.itemAt(i);
- if (touchState.deviceId == deviceId && touchState.source == source) {
- return i;
- }
- }
- return -1;
-}
-
-void InputConsumer::initializeKeyEvent(KeyEvent* event, const InputMessage* msg) {
- event->initialize(
- msg->body.key.deviceId,
- msg->body.key.source,
- msg->body.key.action,
- msg->body.key.flags,
- msg->body.key.keyCode,
- msg->body.key.scanCode,
- msg->body.key.metaState,
- msg->body.key.repeatCount,
- msg->body.key.downTime,
- msg->body.key.eventTime);
-}
-
-void InputConsumer::initializeMotionEvent(MotionEvent* event, const InputMessage* msg) {
- size_t pointerCount = msg->body.motion.pointerCount;
- PointerProperties pointerProperties[pointerCount];
- PointerCoords pointerCoords[pointerCount];
- for (size_t i = 0; i < pointerCount; i++) {
- pointerProperties[i].copyFrom(msg->body.motion.pointers[i].properties);
- pointerCoords[i].copyFrom(msg->body.motion.pointers[i].coords);
- }
-
- event->initialize(
- msg->body.motion.deviceId,
- msg->body.motion.source,
- msg->body.motion.action,
- msg->body.motion.flags,
- msg->body.motion.edgeFlags,
- msg->body.motion.metaState,
- msg->body.motion.buttonState,
- msg->body.motion.xOffset,
- msg->body.motion.yOffset,
- msg->body.motion.xPrecision,
- msg->body.motion.yPrecision,
- msg->body.motion.downTime,
- msg->body.motion.eventTime,
- pointerCount,
- pointerProperties,
- pointerCoords);
-}
-
-void InputConsumer::addSample(MotionEvent* event, const InputMessage* msg) {
- size_t pointerCount = msg->body.motion.pointerCount;
- PointerCoords pointerCoords[pointerCount];
- for (size_t i = 0; i < pointerCount; i++) {
- pointerCoords[i].copyFrom(msg->body.motion.pointers[i].coords);
- }
-
- event->setMetaState(event->getMetaState() | msg->body.motion.metaState);
- event->addSample(msg->body.motion.eventTime, pointerCoords);
-}
-
-bool InputConsumer::canAddSample(const Batch& batch, const InputMessage *msg) {
- const InputMessage& head = batch.samples.itemAt(0);
- size_t pointerCount = msg->body.motion.pointerCount;
- if (head.body.motion.pointerCount != pointerCount
- || head.body.motion.action != msg->body.motion.action) {
- return false;
- }
- for (size_t i = 0; i < pointerCount; i++) {
- if (head.body.motion.pointers[i].properties
- != msg->body.motion.pointers[i].properties) {
- return false;
- }
- }
- return true;
-}
-
-ssize_t InputConsumer::findSampleNoLaterThan(const Batch& batch, nsecs_t time) {
- size_t numSamples = batch.samples.size();
- size_t index = 0;
- while (index < numSamples
- && batch.samples.itemAt(index).body.motion.eventTime <= time) {
- index += 1;
- }
- return ssize_t(index) - 1;
-}
-
-} // namespace android