| // |
| // Copyright 2010 The Android Open Source Project |
| // |
| // Provides a shared memory transport for input events. |
| // |
| #define LOG_TAG "InputTransport" |
| #define ATRACE_TAG ATRACE_TAG_INPUT |
| |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <inttypes.h> |
| #include <math.h> |
| #include <sys/socket.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| |
| #include <android-base/logging.h> |
| #include <android-base/properties.h> |
| #include <android-base/stringprintf.h> |
| #include <binder/Parcel.h> |
| #include <cutils/properties.h> |
| #include <ftl/enum.h> |
| #include <log/log.h> |
| #include <utils/Trace.h> |
| |
| #include <com_android_input_flags.h> |
| #include <input/InputTransport.h> |
| #include <input/TraceTools.h> |
| |
| namespace input_flags = com::android::input::flags; |
| |
| namespace { |
| |
| /** |
| * Log debug messages about channel messages (send message, receive message). |
| * Enable this via "adb shell setprop log.tag.InputTransportMessages DEBUG" |
| * (requires restart) |
| */ |
| const bool DEBUG_CHANNEL_MESSAGES = |
| __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "Messages", ANDROID_LOG_INFO); |
| |
| /** |
| * Log debug messages whenever InputChannel objects are created/destroyed. |
| * Enable this via "adb shell setprop log.tag.InputTransportLifecycle DEBUG" |
| * (requires restart) |
| */ |
| const bool DEBUG_CHANNEL_LIFECYCLE = |
| __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "Lifecycle", ANDROID_LOG_INFO); |
| |
| /** |
| * Log debug messages relating to the consumer end of the transport channel. |
| * Enable this via "adb shell setprop log.tag.InputTransportConsumer DEBUG" (requires restart) |
| */ |
| |
| const bool DEBUG_TRANSPORT_CONSUMER = |
| __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "Consumer", ANDROID_LOG_INFO); |
| |
| const bool IS_DEBUGGABLE_BUILD = |
| #if defined(__ANDROID__) |
| android::base::GetBoolProperty("ro.debuggable", false); |
| #else |
| true; |
| #endif |
| |
| /** |
| * Log debug messages relating to the producer end of the transport channel. |
| * Enable this via "adb shell setprop log.tag.InputTransportPublisher DEBUG". |
| * This requires a restart on non-debuggable (e.g. user) builds, but should take effect immediately |
| * on debuggable builds (e.g. userdebug). |
| */ |
| bool debugTransportPublisher() { |
| if (!IS_DEBUGGABLE_BUILD) { |
| static const bool DEBUG_TRANSPORT_PUBLISHER = |
| __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "Publisher", ANDROID_LOG_INFO); |
| return DEBUG_TRANSPORT_PUBLISHER; |
| } |
| return __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "Publisher", ANDROID_LOG_INFO); |
| } |
| |
| /** |
| * Log debug messages about touch event resampling. |
| * |
| * Enable this via "adb shell setprop log.tag.InputTransportResampling DEBUG". |
| * This requires a restart on non-debuggable (e.g. user) builds, but should take effect immediately |
| * on debuggable builds (e.g. userdebug). |
| */ |
| bool debugResampling() { |
| if (!IS_DEBUGGABLE_BUILD) { |
| static const bool DEBUG_TRANSPORT_RESAMPLING = |
| __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "Resampling", |
| ANDROID_LOG_INFO); |
| return DEBUG_TRANSPORT_RESAMPLING; |
| } |
| return __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "Resampling", ANDROID_LOG_INFO); |
| } |
| |
| } // namespace |
| |
| using android::base::Result; |
| using android::base::StringPrintf; |
| |
| 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. |
| const std::chrono::duration RESAMPLE_LATENCY = 5ms; |
| |
| // Minimum time difference between consecutive samples before attempting to resample. |
| static const nsecs_t RESAMPLE_MIN_DELTA = 2 * NANOS_PER_MS; |
| |
| // Maximum time difference between consecutive samples before attempting to resample |
| // by extrapolation. |
| static const nsecs_t RESAMPLE_MAX_DELTA = 20 * 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; |
| |
| /** |
| * System property for enabling / disabling touch resampling. |
| * Resampling extrapolates / interpolates the reported touch event coordinates to better |
| * align them to the VSYNC signal, thus resulting in smoother scrolling performance. |
| * Resampling is not needed (and should be disabled) on hardware that already |
| * has touch events triggered by VSYNC. |
| * Set to "1" to enable resampling (default). |
| * Set to "0" to disable resampling. |
| * Resampling is enabled by default. |
| */ |
| static const char* PROPERTY_RESAMPLING_ENABLED = "ro.input.resampling"; |
| |
| /** |
| * Crash if the events that are getting sent to the InputPublisher are inconsistent. |
| * Enable this via "adb shell setprop log.tag.InputTransportVerifyEvents DEBUG" |
| */ |
| static bool verifyEvents() { |
| return input_flags::enable_outbound_event_verification() || |
| __android_log_is_loggable(ANDROID_LOG_DEBUG, LOG_TAG "VerifyEvents", ANDROID_LOG_INFO); |
| } |
| |
| 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); |
| } |
| |
| inline static bool isPointerEvent(int32_t source) { |
| return (source & AINPUT_SOURCE_CLASS_POINTER) == AINPUT_SOURCE_CLASS_POINTER; |
| } |
| |
| inline static const char* toString(bool value) { |
| return value ? "true" : "false"; |
| } |
| |
| static bool shouldResampleTool(ToolType toolType) { |
| return toolType == ToolType::FINGER || toolType == ToolType::UNKNOWN; |
| } |
| |
| // --- InputMessage --- |
| |
| bool InputMessage::isValid(size_t actualSize) const { |
| if (size() != actualSize) { |
| ALOGE("Received message of incorrect size %zu (expected %zu)", actualSize, size()); |
| return false; |
| } |
| |
| switch (header.type) { |
| case Type::KEY: |
| return true; |
| case Type::MOTION: { |
| const bool valid = |
| body.motion.pointerCount > 0 && body.motion.pointerCount <= MAX_POINTERS; |
| if (!valid) { |
| ALOGE("Received invalid MOTION: pointerCount = %" PRIu32, body.motion.pointerCount); |
| } |
| return valid; |
| } |
| case Type::FINISHED: |
| case Type::FOCUS: |
| case Type::CAPTURE: |
| case Type::DRAG: |
| case Type::TOUCH_MODE: |
| return true; |
| case Type::TIMELINE: { |
| const nsecs_t gpuCompletedTime = |
| body.timeline.graphicsTimeline[GraphicsTimeline::GPU_COMPLETED_TIME]; |
| const nsecs_t presentTime = |
| body.timeline.graphicsTimeline[GraphicsTimeline::PRESENT_TIME]; |
| const bool valid = presentTime > gpuCompletedTime; |
| if (!valid) { |
| ALOGE("Received invalid TIMELINE: gpuCompletedTime = %" PRId64 |
| " presentTime = %" PRId64, |
| gpuCompletedTime, presentTime); |
| } |
| return valid; |
| } |
| } |
| ALOGE("Invalid message type: %s", ftl::enum_string(header.type).c_str()); |
| 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(); |
| case Type::FOCUS: |
| return sizeof(Header) + body.focus.size(); |
| case Type::CAPTURE: |
| return sizeof(Header) + body.capture.size(); |
| case Type::DRAG: |
| return sizeof(Header) + body.drag.size(); |
| case Type::TIMELINE: |
| return sizeof(Header) + body.timeline.size(); |
| case Type::TOUCH_MODE: |
| return sizeof(Header) + body.touchMode.size(); |
| } |
| return sizeof(Header); |
| } |
| |
| /** |
| * There could be non-zero bytes in-between InputMessage fields. Force-initialize the entire |
| * memory to zero, then only copy the valid bytes on a per-field basis. |
| */ |
| void InputMessage::getSanitizedCopy(InputMessage* msg) const { |
| memset(msg, 0, sizeof(*msg)); |
| |
| // Write the header |
| msg->header.type = header.type; |
| msg->header.seq = header.seq; |
| |
| // Write the body |
| switch(header.type) { |
| case InputMessage::Type::KEY: { |
| // int32_t eventId |
| msg->body.key.eventId = body.key.eventId; |
| // nsecs_t eventTime |
| msg->body.key.eventTime = body.key.eventTime; |
| // int32_t deviceId |
| msg->body.key.deviceId = body.key.deviceId; |
| // int32_t source |
| msg->body.key.source = body.key.source; |
| // int32_t displayId |
| msg->body.key.displayId = body.key.displayId; |
| // std::array<uint8_t, 32> hmac |
| msg->body.key.hmac = body.key.hmac; |
| // int32_t action |
| msg->body.key.action = body.key.action; |
| // int32_t flags |
| msg->body.key.flags = body.key.flags; |
| // int32_t keyCode |
| msg->body.key.keyCode = body.key.keyCode; |
| // int32_t scanCode |
| msg->body.key.scanCode = body.key.scanCode; |
| // int32_t metaState |
| msg->body.key.metaState = body.key.metaState; |
| // int32_t repeatCount |
| msg->body.key.repeatCount = body.key.repeatCount; |
| // nsecs_t downTime |
| msg->body.key.downTime = body.key.downTime; |
| break; |
| } |
| case InputMessage::Type::MOTION: { |
| // int32_t eventId |
| msg->body.motion.eventId = body.motion.eventId; |
| // uint32_t pointerCount |
| msg->body.motion.pointerCount = body.motion.pointerCount; |
| // nsecs_t eventTime |
| msg->body.motion.eventTime = body.motion.eventTime; |
| // int32_t deviceId |
| msg->body.motion.deviceId = body.motion.deviceId; |
| // int32_t source |
| msg->body.motion.source = body.motion.source; |
| // int32_t displayId |
| msg->body.motion.displayId = body.motion.displayId; |
| // std::array<uint8_t, 32> hmac |
| msg->body.motion.hmac = body.motion.hmac; |
| // int32_t action |
| msg->body.motion.action = body.motion.action; |
| // int32_t actionButton |
| msg->body.motion.actionButton = body.motion.actionButton; |
| // int32_t flags |
| msg->body.motion.flags = body.motion.flags; |
| // int32_t metaState |
| msg->body.motion.metaState = body.motion.metaState; |
| // int32_t buttonState |
| msg->body.motion.buttonState = body.motion.buttonState; |
| // MotionClassification classification |
| msg->body.motion.classification = body.motion.classification; |
| // int32_t edgeFlags |
| msg->body.motion.edgeFlags = body.motion.edgeFlags; |
| // nsecs_t downTime |
| msg->body.motion.downTime = body.motion.downTime; |
| |
| msg->body.motion.dsdx = body.motion.dsdx; |
| msg->body.motion.dtdx = body.motion.dtdx; |
| msg->body.motion.dtdy = body.motion.dtdy; |
| msg->body.motion.dsdy = body.motion.dsdy; |
| msg->body.motion.tx = body.motion.tx; |
| msg->body.motion.ty = body.motion.ty; |
| |
| // float xPrecision |
| msg->body.motion.xPrecision = body.motion.xPrecision; |
| // float yPrecision |
| msg->body.motion.yPrecision = body.motion.yPrecision; |
| // float xCursorPosition |
| msg->body.motion.xCursorPosition = body.motion.xCursorPosition; |
| // float yCursorPosition |
| msg->body.motion.yCursorPosition = body.motion.yCursorPosition; |
| |
| msg->body.motion.dsdxRaw = body.motion.dsdxRaw; |
| msg->body.motion.dtdxRaw = body.motion.dtdxRaw; |
| msg->body.motion.dtdyRaw = body.motion.dtdyRaw; |
| msg->body.motion.dsdyRaw = body.motion.dsdyRaw; |
| msg->body.motion.txRaw = body.motion.txRaw; |
| msg->body.motion.tyRaw = body.motion.tyRaw; |
| |
| //struct Pointer pointers[MAX_POINTERS] |
| for (size_t i = 0; i < body.motion.pointerCount; i++) { |
| // PointerProperties properties |
| msg->body.motion.pointers[i].properties.id = body.motion.pointers[i].properties.id; |
| msg->body.motion.pointers[i].properties.toolType = |
| body.motion.pointers[i].properties.toolType, |
| // PointerCoords coords |
| msg->body.motion.pointers[i].coords.bits = body.motion.pointers[i].coords.bits; |
| const uint32_t count = BitSet64::count(body.motion.pointers[i].coords.bits); |
| memcpy(&msg->body.motion.pointers[i].coords.values[0], |
| &body.motion.pointers[i].coords.values[0], |
| count * (sizeof(body.motion.pointers[i].coords.values[0]))); |
| msg->body.motion.pointers[i].coords.isResampled = |
| body.motion.pointers[i].coords.isResampled; |
| } |
| break; |
| } |
| case InputMessage::Type::FINISHED: { |
| msg->body.finished.handled = body.finished.handled; |
| msg->body.finished.consumeTime = body.finished.consumeTime; |
| break; |
| } |
| case InputMessage::Type::FOCUS: { |
| msg->body.focus.eventId = body.focus.eventId; |
| msg->body.focus.hasFocus = body.focus.hasFocus; |
| break; |
| } |
| case InputMessage::Type::CAPTURE: { |
| msg->body.capture.eventId = body.capture.eventId; |
| msg->body.capture.pointerCaptureEnabled = body.capture.pointerCaptureEnabled; |
| break; |
| } |
| case InputMessage::Type::DRAG: { |
| msg->body.drag.eventId = body.drag.eventId; |
| msg->body.drag.x = body.drag.x; |
| msg->body.drag.y = body.drag.y; |
| msg->body.drag.isExiting = body.drag.isExiting; |
| break; |
| } |
| case InputMessage::Type::TIMELINE: { |
| msg->body.timeline.eventId = body.timeline.eventId; |
| msg->body.timeline.graphicsTimeline = body.timeline.graphicsTimeline; |
| break; |
| } |
| case InputMessage::Type::TOUCH_MODE: { |
| msg->body.touchMode.eventId = body.touchMode.eventId; |
| msg->body.touchMode.isInTouchMode = body.touchMode.isInTouchMode; |
| } |
| } |
| } |
| |
| // --- InputChannel --- |
| |
| std::unique_ptr<InputChannel> InputChannel::create(const std::string& name, |
| android::base::unique_fd fd, sp<IBinder> token) { |
| const int result = fcntl(fd, F_SETFL, O_NONBLOCK); |
| if (result != 0) { |
| LOG_ALWAYS_FATAL("channel '%s' ~ Could not make socket non-blocking: %s", name.c_str(), |
| strerror(errno)); |
| return nullptr; |
| } |
| // using 'new' to access a non-public constructor |
| return std::unique_ptr<InputChannel>(new InputChannel(name, std::move(fd), token)); |
| } |
| |
| InputChannel::InputChannel(const std::string name, android::base::unique_fd fd, sp<IBinder> token) |
| : mName(std::move(name)), mFd(std::move(fd)), mToken(std::move(token)) { |
| ALOGD_IF(DEBUG_CHANNEL_LIFECYCLE, "Input channel constructed: name='%s', fd=%d", |
| getName().c_str(), getFd().get()); |
| } |
| |
| InputChannel::~InputChannel() { |
| ALOGD_IF(DEBUG_CHANNEL_LIFECYCLE, "Input channel destroyed: name='%s', fd=%d", |
| getName().c_str(), getFd().get()); |
| } |
| |
| status_t InputChannel::openInputChannelPair(const std::string& name, |
| std::unique_ptr<InputChannel>& outServerChannel, |
| std::unique_ptr<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=%s(%d)", name.c_str(), |
| strerror(errno), errno); |
| outServerChannel.reset(); |
| outClientChannel.reset(); |
| 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)); |
| |
| sp<IBinder> token = sp<BBinder>::make(); |
| |
| std::string serverChannelName = name + " (server)"; |
| android::base::unique_fd serverFd(sockets[0]); |
| outServerChannel = InputChannel::create(serverChannelName, std::move(serverFd), token); |
| |
| std::string clientChannelName = name + " (client)"; |
| android::base::unique_fd clientFd(sockets[1]); |
| outClientChannel = InputChannel::create(clientChannelName, std::move(clientFd), token); |
| return OK; |
| } |
| |
| status_t InputChannel::sendMessage(const InputMessage* msg) { |
| ATRACE_NAME_IF(ATRACE_ENABLED(), |
| StringPrintf("sendMessage(inputChannel=%s, seq=0x%" PRIx32 ", type=0x%" PRIx32 |
| ")", |
| mName.c_str(), msg->header.seq, msg->header.type)); |
| const size_t msgLength = msg->size(); |
| InputMessage cleanMsg; |
| msg->getSanitizedCopy(&cleanMsg); |
| ssize_t nWrite; |
| do { |
| nWrite = ::send(getFd().get(), &cleanMsg, msgLength, MSG_DONTWAIT | MSG_NOSIGNAL); |
| } while (nWrite == -1 && errno == EINTR); |
| |
| if (nWrite < 0) { |
| int error = errno; |
| ALOGD_IF(DEBUG_CHANNEL_MESSAGES, "channel '%s' ~ error sending message of type %s, %s", |
| mName.c_str(), ftl::enum_string(msg->header.type).c_str(), strerror(error)); |
| if (error == EAGAIN || error == EWOULDBLOCK) { |
| return WOULD_BLOCK; |
| } |
| if (error == EPIPE || error == ENOTCONN || error == ECONNREFUSED || error == ECONNRESET) { |
| return DEAD_OBJECT; |
| } |
| return -error; |
| } |
| |
| if (size_t(nWrite) != msgLength) { |
| ALOGD_IF(DEBUG_CHANNEL_MESSAGES, |
| "channel '%s' ~ error sending message type %s, send was incomplete", mName.c_str(), |
| ftl::enum_string(msg->header.type).c_str()); |
| return DEAD_OBJECT; |
| } |
| |
| ALOGD_IF(DEBUG_CHANNEL_MESSAGES, "channel '%s' ~ sent message of type %s", mName.c_str(), |
| ftl::enum_string(msg->header.type).c_str()); |
| |
| return OK; |
| } |
| |
| status_t InputChannel::receiveMessage(InputMessage* msg) { |
| ssize_t nRead; |
| do { |
| nRead = ::recv(getFd().get(), msg, sizeof(InputMessage), MSG_DONTWAIT); |
| } while (nRead == -1 && errno == EINTR); |
| |
| if (nRead < 0) { |
| int error = errno; |
| ALOGD_IF(DEBUG_CHANNEL_MESSAGES, "channel '%s' ~ receive message failed, errno=%d", |
| mName.c_str(), errno); |
| if (error == EAGAIN || error == EWOULDBLOCK) { |
| return WOULD_BLOCK; |
| } |
| if (error == EPIPE || error == ENOTCONN || error == ECONNREFUSED) { |
| return DEAD_OBJECT; |
| } |
| return -error; |
| } |
| |
| if (nRead == 0) { // check for EOF |
| ALOGD_IF(DEBUG_CHANNEL_MESSAGES, |
| "channel '%s' ~ receive message failed because peer was closed", mName.c_str()); |
| return DEAD_OBJECT; |
| } |
| |
| if (!msg->isValid(nRead)) { |
| ALOGE("channel '%s' ~ received invalid message of size %zd", mName.c_str(), nRead); |
| return BAD_VALUE; |
| } |
| |
| ALOGD_IF(DEBUG_CHANNEL_MESSAGES, "channel '%s' ~ received message of type %s", mName.c_str(), |
| ftl::enum_string(msg->header.type).c_str()); |
| if (ATRACE_ENABLED()) { |
| // Add an additional trace point to include data about the received message. |
| std::string message = StringPrintf("receiveMessage(inputChannel=%s, seq=0x%" PRIx32 |
| ", type=0x%" PRIx32 ")", |
| mName.c_str(), msg->header.seq, msg->header.type); |
| ATRACE_NAME(message.c_str()); |
| } |
| return OK; |
| } |
| |
| std::unique_ptr<InputChannel> InputChannel::dup() const { |
| base::unique_fd newFd(dupFd()); |
| return InputChannel::create(getName(), std::move(newFd), getConnectionToken()); |
| } |
| |
| void InputChannel::copyTo(InputChannel& outChannel) const { |
| outChannel.mName = getName(); |
| outChannel.mFd = dupFd(); |
| outChannel.mToken = getConnectionToken(); |
| } |
| |
| status_t InputChannel::writeToParcel(android::Parcel* parcel) const { |
| if (parcel == nullptr) { |
| ALOGE("%s: Null parcel", __func__); |
| return BAD_VALUE; |
| } |
| return parcel->writeStrongBinder(mToken) |
| ?: parcel->writeUtf8AsUtf16(mName) ?: parcel->writeUniqueFileDescriptor(mFd); |
| } |
| |
| status_t InputChannel::readFromParcel(const android::Parcel* parcel) { |
| if (parcel == nullptr) { |
| ALOGE("%s: Null parcel", __func__); |
| return BAD_VALUE; |
| } |
| mToken = parcel->readStrongBinder(); |
| return parcel->readUtf8FromUtf16(&mName) ?: parcel->readUniqueFileDescriptor(&mFd); |
| } |
| |
| sp<IBinder> InputChannel::getConnectionToken() const { |
| return mToken; |
| } |
| |
| base::unique_fd InputChannel::dupFd() const { |
| base::unique_fd newFd(::dup(getFd().get())); |
| if (!newFd.ok()) { |
| ALOGE("Could not duplicate fd %i for channel %s: %s", getFd().get(), getName().c_str(), |
| strerror(errno)); |
| const bool hitFdLimit = errno == EMFILE || errno == ENFILE; |
| // If this process is out of file descriptors, then throwing that might end up exploding |
| // on the other side of a binder call, which isn't really helpful. |
| // Better to just crash here and hope that the FD leak is slow. |
| // Other failures could be client errors, so we still propagate those back to the caller. |
| LOG_ALWAYS_FATAL_IF(hitFdLimit, "Too many open files, could not duplicate input channel %s", |
| getName().c_str()); |
| return {}; |
| } |
| return newFd; |
| } |
| |
| // --- InputPublisher --- |
| |
| InputPublisher::InputPublisher(const std::shared_ptr<InputChannel>& channel) |
| : mChannel(channel), mInputVerifier(channel->getName()) {} |
| |
| InputPublisher::~InputPublisher() { |
| } |
| |
| status_t InputPublisher::publishKeyEvent(uint32_t seq, int32_t eventId, int32_t deviceId, |
| int32_t source, int32_t displayId, |
| std::array<uint8_t, 32> hmac, int32_t action, |
| int32_t flags, int32_t keyCode, int32_t scanCode, |
| int32_t metaState, int32_t repeatCount, nsecs_t downTime, |
| nsecs_t eventTime) { |
| ATRACE_NAME_IF(ATRACE_ENABLED(), |
| StringPrintf("publishKeyEvent(inputChannel=%s, action=%s, keyCode=%s)", |
| mChannel->getName().c_str(), KeyEvent::actionToString(action), |
| KeyEvent::getLabel(keyCode))); |
| ALOGD_IF(debugTransportPublisher(), |
| "channel '%s' publisher ~ %s: seq=%u, id=%d, deviceId=%d, source=%s, " |
| "action=%s, flags=0x%x, keyCode=%s, scanCode=%d, metaState=0x%x, repeatCount=%d," |
| "downTime=%" PRId64 ", eventTime=%" PRId64, |
| mChannel->getName().c_str(), __func__, seq, eventId, deviceId, |
| inputEventSourceToString(source).c_str(), KeyEvent::actionToString(action), flags, |
| KeyEvent::getLabel(keyCode), scanCode, metaState, repeatCount, downTime, eventTime); |
| |
| 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.header.seq = seq; |
| msg.body.key.eventId = eventId; |
| msg.body.key.deviceId = deviceId; |
| msg.body.key.source = source; |
| msg.body.key.displayId = displayId; |
| msg.body.key.hmac = std::move(hmac); |
| 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 eventId, int32_t deviceId, int32_t source, int32_t displayId, |
| std::array<uint8_t, 32> hmac, int32_t action, int32_t actionButton, int32_t flags, |
| int32_t edgeFlags, int32_t metaState, int32_t buttonState, |
| MotionClassification classification, const ui::Transform& transform, float xPrecision, |
| float yPrecision, float xCursorPosition, float yCursorPosition, |
| const ui::Transform& rawTransform, nsecs_t downTime, nsecs_t eventTime, |
| uint32_t pointerCount, const PointerProperties* pointerProperties, |
| const PointerCoords* pointerCoords) { |
| ATRACE_NAME_IF(ATRACE_ENABLED(), |
| StringPrintf("publishMotionEvent(inputChannel=%s, action=%s)", |
| mChannel->getName().c_str(), |
| MotionEvent::actionToString(action).c_str())); |
| if (verifyEvents()) { |
| Result<void> result = |
| mInputVerifier.processMovement(deviceId, source, action, pointerCount, |
| pointerProperties, pointerCoords, flags); |
| if (!result.ok()) { |
| LOG(FATAL) << "Bad stream: " << result.error(); |
| } |
| } |
| if (debugTransportPublisher()) { |
| std::string transformString; |
| transform.dump(transformString, "transform", " "); |
| ALOGD("channel '%s' publisher ~ %s: seq=%u, id=%d, deviceId=%d, source=%s, " |
| "displayId=%" PRId32 ", " |
| "action=%s, actionButton=0x%08x, flags=0x%x, edgeFlags=0x%x, " |
| "metaState=0x%x, buttonState=0x%x, classification=%s," |
| "xPrecision=%f, yPrecision=%f, downTime=%" PRId64 ", eventTime=%" PRId64 ", " |
| "pointerCount=%" PRIu32 " \n%s", |
| mChannel->getName().c_str(), __func__, seq, eventId, deviceId, |
| inputEventSourceToString(source).c_str(), displayId, |
| MotionEvent::actionToString(action).c_str(), actionButton, flags, edgeFlags, |
| metaState, buttonState, motionClassificationToString(classification), xPrecision, |
| yPrecision, downTime, eventTime, pointerCount, transformString.c_str()); |
| } |
| |
| 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: %" PRIu32 ".", |
| mChannel->getName().c_str(), pointerCount); |
| return BAD_VALUE; |
| } |
| |
| InputMessage msg; |
| msg.header.type = InputMessage::Type::MOTION; |
| msg.header.seq = seq; |
| msg.body.motion.eventId = eventId; |
| msg.body.motion.deviceId = deviceId; |
| msg.body.motion.source = source; |
| msg.body.motion.displayId = displayId; |
| msg.body.motion.hmac = std::move(hmac); |
| msg.body.motion.action = action; |
| msg.body.motion.actionButton = actionButton; |
| msg.body.motion.flags = flags; |
| msg.body.motion.edgeFlags = edgeFlags; |
| msg.body.motion.metaState = metaState; |
| msg.body.motion.buttonState = buttonState; |
| msg.body.motion.classification = classification; |
| msg.body.motion.dsdx = transform.dsdx(); |
| msg.body.motion.dtdx = transform.dtdx(); |
| msg.body.motion.dtdy = transform.dtdy(); |
| msg.body.motion.dsdy = transform.dsdy(); |
| msg.body.motion.tx = transform.tx(); |
| msg.body.motion.ty = transform.ty(); |
| msg.body.motion.xPrecision = xPrecision; |
| msg.body.motion.yPrecision = yPrecision; |
| msg.body.motion.xCursorPosition = xCursorPosition; |
| msg.body.motion.yCursorPosition = yCursorPosition; |
| msg.body.motion.dsdxRaw = rawTransform.dsdx(); |
| msg.body.motion.dtdxRaw = rawTransform.dtdx(); |
| msg.body.motion.dtdyRaw = rawTransform.dtdy(); |
| msg.body.motion.dsdyRaw = rawTransform.dsdy(); |
| msg.body.motion.txRaw = rawTransform.tx(); |
| msg.body.motion.tyRaw = rawTransform.ty(); |
| msg.body.motion.downTime = downTime; |
| msg.body.motion.eventTime = eventTime; |
| msg.body.motion.pointerCount = pointerCount; |
| for (uint32_t i = 0; i < pointerCount; i++) { |
| msg.body.motion.pointers[i].properties = pointerProperties[i]; |
| msg.body.motion.pointers[i].coords = pointerCoords[i]; |
| } |
| |
| return mChannel->sendMessage(&msg); |
| } |
| |
| status_t InputPublisher::publishFocusEvent(uint32_t seq, int32_t eventId, bool hasFocus) { |
| ATRACE_NAME_IF(ATRACE_ENABLED(), |
| StringPrintf("publishFocusEvent(inputChannel=%s, hasFocus=%s)", |
| mChannel->getName().c_str(), toString(hasFocus))); |
| ALOGD_IF(debugTransportPublisher(), "channel '%s' publisher ~ %s: seq=%u, id=%d, hasFocus=%s", |
| mChannel->getName().c_str(), __func__, seq, eventId, toString(hasFocus)); |
| |
| InputMessage msg; |
| msg.header.type = InputMessage::Type::FOCUS; |
| msg.header.seq = seq; |
| msg.body.focus.eventId = eventId; |
| msg.body.focus.hasFocus = hasFocus; |
| return mChannel->sendMessage(&msg); |
| } |
| |
| status_t InputPublisher::publishCaptureEvent(uint32_t seq, int32_t eventId, |
| bool pointerCaptureEnabled) { |
| ATRACE_NAME_IF(ATRACE_ENABLED(), |
| StringPrintf("publishCaptureEvent(inputChannel=%s, pointerCaptureEnabled=%s)", |
| mChannel->getName().c_str(), toString(pointerCaptureEnabled))); |
| ALOGD_IF(debugTransportPublisher(), |
| "channel '%s' publisher ~ %s: seq=%u, id=%d, pointerCaptureEnabled=%s", |
| mChannel->getName().c_str(), __func__, seq, eventId, toString(pointerCaptureEnabled)); |
| |
| InputMessage msg; |
| msg.header.type = InputMessage::Type::CAPTURE; |
| msg.header.seq = seq; |
| msg.body.capture.eventId = eventId; |
| msg.body.capture.pointerCaptureEnabled = pointerCaptureEnabled; |
| return mChannel->sendMessage(&msg); |
| } |
| |
| status_t InputPublisher::publishDragEvent(uint32_t seq, int32_t eventId, float x, float y, |
| bool isExiting) { |
| ATRACE_NAME_IF(ATRACE_ENABLED(), |
| StringPrintf("publishDragEvent(inputChannel=%s, x=%f, y=%f, isExiting=%s)", |
| mChannel->getName().c_str(), x, y, toString(isExiting))); |
| ALOGD_IF(debugTransportPublisher(), |
| "channel '%s' publisher ~ %s: seq=%u, id=%d, x=%f, y=%f, isExiting=%s", |
| mChannel->getName().c_str(), __func__, seq, eventId, x, y, toString(isExiting)); |
| |
| InputMessage msg; |
| msg.header.type = InputMessage::Type::DRAG; |
| msg.header.seq = seq; |
| msg.body.drag.eventId = eventId; |
| msg.body.drag.isExiting = isExiting; |
| msg.body.drag.x = x; |
| msg.body.drag.y = y; |
| return mChannel->sendMessage(&msg); |
| } |
| |
| status_t InputPublisher::publishTouchModeEvent(uint32_t seq, int32_t eventId, bool isInTouchMode) { |
| ATRACE_NAME_IF(ATRACE_ENABLED(), |
| StringPrintf("publishTouchModeEvent(inputChannel=%s, isInTouchMode=%s)", |
| mChannel->getName().c_str(), toString(isInTouchMode))); |
| ALOGD_IF(debugTransportPublisher(), |
| "channel '%s' publisher ~ %s: seq=%u, id=%d, isInTouchMode=%s", |
| mChannel->getName().c_str(), __func__, seq, eventId, toString(isInTouchMode)); |
| |
| InputMessage msg; |
| msg.header.type = InputMessage::Type::TOUCH_MODE; |
| msg.header.seq = seq; |
| msg.body.touchMode.eventId = eventId; |
| msg.body.touchMode.isInTouchMode = isInTouchMode; |
| return mChannel->sendMessage(&msg); |
| } |
| |
| android::base::Result<InputPublisher::ConsumerResponse> InputPublisher::receiveConsumerResponse() { |
| InputMessage msg; |
| status_t result = mChannel->receiveMessage(&msg); |
| if (result) { |
| if (debugTransportPublisher() && result != WOULD_BLOCK) { |
| LOG(INFO) << "channel '" << mChannel->getName() << "' publisher ~ " << __func__ << ": " |
| << strerror(result); |
| } |
| return android::base::Error(result); |
| } |
| if (msg.header.type == InputMessage::Type::FINISHED) { |
| ALOGD_IF(debugTransportPublisher(), |
| "channel '%s' publisher ~ %s: finished: seq=%u, handled=%s", |
| mChannel->getName().c_str(), __func__, msg.header.seq, |
| toString(msg.body.finished.handled)); |
| return Finished{ |
| .seq = msg.header.seq, |
| .handled = msg.body.finished.handled, |
| .consumeTime = msg.body.finished.consumeTime, |
| }; |
| } |
| |
| if (msg.header.type == InputMessage::Type::TIMELINE) { |
| ALOGD_IF(debugTransportPublisher(), "channel '%s' publisher ~ %s: timeline: id=%d", |
| mChannel->getName().c_str(), __func__, msg.body.timeline.eventId); |
| return Timeline{ |
| .inputEventId = msg.body.timeline.eventId, |
| .graphicsTimeline = msg.body.timeline.graphicsTimeline, |
| }; |
| } |
| |
| ALOGE("channel '%s' publisher ~ Received unexpected %s message from consumer", |
| mChannel->getName().c_str(), ftl::enum_string(msg.header.type).c_str()); |
| return android::base::Error(UNKNOWN_ERROR); |
| } |
| |
| // --- InputConsumer --- |
| |
| InputConsumer::InputConsumer(const std::shared_ptr<InputChannel>& channel) |
| : InputConsumer(channel, isTouchResamplingEnabled()) {} |
| |
| InputConsumer::InputConsumer(const std::shared_ptr<InputChannel>& channel, |
| bool enableTouchResampling) |
| : mResampleTouch(enableTouchResampling), mChannel(channel), mMsgDeferred(false) {} |
| |
| InputConsumer::~InputConsumer() { |
| } |
| |
| bool InputConsumer::isTouchResamplingEnabled() { |
| return property_get_bool(PROPERTY_RESAMPLING_ENABLED, true); |
| } |
| |
| status_t InputConsumer::consume(InputEventFactoryInterface* factory, bool consumeBatches, |
| nsecs_t frameTime, uint32_t* outSeq, InputEvent** outEvent) { |
| ALOGD_IF(DEBUG_TRANSPORT_CONSUMER, |
| "channel '%s' consumer ~ consume: consumeBatches=%s, frameTime=%" PRId64, |
| mChannel->getName().c_str(), toString(consumeBatches), frameTime); |
| |
| *outSeq = 0; |
| *outEvent = nullptr; |
| |
| // 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 == OK) { |
| const auto [_, inserted] = |
| mConsumeTimes.emplace(mMsg.header.seq, systemTime(SYSTEM_TIME_MONOTONIC)); |
| LOG_ALWAYS_FATAL_IF(!inserted, "Already have a consume time for seq=%" PRIu32, |
| mMsg.header.seq); |
| } |
| 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) { |
| ALOGD_IF(DEBUG_TRANSPORT_CONSUMER, |
| "channel '%s' consumer ~ consumed batch event, seq=%u", |
| mChannel->getName().c_str(), *outSeq); |
| 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.header.seq; |
| *outEvent = keyEvent; |
| ALOGD_IF(DEBUG_TRANSPORT_CONSUMER, |
| "channel '%s' consumer ~ consumed key event, seq=%u", |
| mChannel->getName().c_str(), *outSeq); |
| break; |
| } |
| |
| case InputMessage::Type::MOTION: { |
| ssize_t batchIndex = findBatch(mMsg.body.motion.deviceId, mMsg.body.motion.source); |
| if (batchIndex >= 0) { |
| Batch& batch = mBatches[batchIndex]; |
| if (canAddSample(batch, &mMsg)) { |
| batch.samples.push_back(mMsg); |
| ALOGD_IF(DEBUG_TRANSPORT_CONSUMER, |
| "channel '%s' consumer ~ appended to batch event", |
| mChannel->getName().c_str()); |
| break; |
| } else if (isPointerEvent(mMsg.body.motion.source) && |
| mMsg.body.motion.action == AMOTION_EVENT_ACTION_CANCEL) { |
| // No need to process events that we are going to cancel anyways |
| const size_t count = batch.samples.size(); |
| for (size_t i = 0; i < count; i++) { |
| const InputMessage& msg = batch.samples[i]; |
| sendFinishedSignal(msg.header.seq, false); |
| } |
| batch.samples.erase(batch.samples.begin(), batch.samples.begin() + count); |
| mBatches.erase(mBatches.begin() + batchIndex); |
| } 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.erase(mBatches.begin() + batchIndex); |
| if (result) { |
| return result; |
| } |
| ALOGD_IF(DEBUG_TRANSPORT_CONSUMER, |
| "channel '%s' consumer ~ consumed batch event and " |
| "deferred current event, seq=%u", |
| mChannel->getName().c_str(), *outSeq); |
| 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) { |
| Batch batch; |
| batch.samples.push_back(mMsg); |
| mBatches.push_back(batch); |
| ALOGD_IF(DEBUG_TRANSPORT_CONSUMER, |
| "channel '%s' consumer ~ started batch event", |
| mChannel->getName().c_str()); |
| break; |
| } |
| |
| MotionEvent* motionEvent = factory->createMotionEvent(); |
| if (!motionEvent) return NO_MEMORY; |
| |
| updateTouchState(mMsg); |
| initializeMotionEvent(motionEvent, &mMsg); |
| *outSeq = mMsg.header.seq; |
| *outEvent = motionEvent; |
| |
| ALOGD_IF(DEBUG_TRANSPORT_CONSUMER, |
| "channel '%s' consumer ~ consumed motion event, seq=%u", |
| mChannel->getName().c_str(), *outSeq); |
| break; |
| } |
| |
| case InputMessage::Type::FINISHED: |
| case InputMessage::Type::TIMELINE: { |
| LOG_ALWAYS_FATAL("Consumed a %s message, which should never be seen by " |
| "InputConsumer!", |
| ftl::enum_string(mMsg.header.type).c_str()); |
| break; |
| } |
| |
| case InputMessage::Type::FOCUS: { |
| FocusEvent* focusEvent = factory->createFocusEvent(); |
| if (!focusEvent) return NO_MEMORY; |
| |
| initializeFocusEvent(focusEvent, &mMsg); |
| *outSeq = mMsg.header.seq; |
| *outEvent = focusEvent; |
| break; |
| } |
| |
| case InputMessage::Type::CAPTURE: { |
| CaptureEvent* captureEvent = factory->createCaptureEvent(); |
| if (!captureEvent) return NO_MEMORY; |
| |
| initializeCaptureEvent(captureEvent, &mMsg); |
| *outSeq = mMsg.header.seq; |
| *outEvent = captureEvent; |
| break; |
| } |
| |
| case InputMessage::Type::DRAG: { |
| DragEvent* dragEvent = factory->createDragEvent(); |
| if (!dragEvent) return NO_MEMORY; |
| |
| initializeDragEvent(dragEvent, &mMsg); |
| *outSeq = mMsg.header.seq; |
| *outEvent = dragEvent; |
| break; |
| } |
| |
| case InputMessage::Type::TOUCH_MODE: { |
| TouchModeEvent* touchModeEvent = factory->createTouchModeEvent(); |
| if (!touchModeEvent) return NO_MEMORY; |
| |
| initializeTouchModeEvent(touchModeEvent, &mMsg); |
| *outSeq = mMsg.header.seq; |
| *outEvent = touchModeEvent; |
| break; |
| } |
| } |
| } |
| 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; ) { |
| i--; |
| Batch& batch = mBatches[i]; |
| if (frameTime < 0) { |
| result = consumeSamples(factory, batch, batch.samples.size(), outSeq, outEvent); |
| mBatches.erase(mBatches.begin() + i); |
| return result; |
| } |
| |
| nsecs_t sampleTime = frameTime; |
| if (mResampleTouch) { |
| sampleTime -= std::chrono::nanoseconds(RESAMPLE_LATENCY).count(); |
| } |
| ssize_t split = findSampleNoLaterThan(batch, sampleTime); |
| if (split < 0) { |
| continue; |
| } |
| |
| result = consumeSamples(factory, batch, split + 1, outSeq, outEvent); |
| const InputMessage* next; |
| if (batch.samples.empty()) { |
| mBatches.erase(mBatches.begin() + i); |
| next = nullptr; |
| } else { |
| next = &batch.samples[0]; |
| } |
| if (!result && mResampleTouch) { |
| 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[i]; |
| updateTouchState(msg); |
| if (i) { |
| SeqChain seqChain; |
| seqChain.seq = msg.header.seq; |
| seqChain.chain = chain; |
| mSeqChains.push_back(seqChain); |
| addSample(motionEvent, &msg); |
| } else { |
| initializeMotionEvent(motionEvent, &msg); |
| } |
| chain = msg.header.seq; |
| } |
| batch.samples.erase(batch.samples.begin(), batch.samples.begin() + count); |
| |
| *outSeq = chain; |
| *outEvent = motionEvent; |
| return OK; |
| } |
| |
| void InputConsumer::updateTouchState(InputMessage& msg) { |
| if (!mResampleTouch || !isPointerEvent(msg.body.motion.source)) { |
| return; |
| } |
| |
| int32_t deviceId = msg.body.motion.deviceId; |
| int32_t source = msg.body.motion.source; |
| |
| // 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_back({}); |
| index = mTouchStates.size() - 1; |
| } |
| TouchState& touchState = mTouchStates[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[index]; |
| touchState.addHistory(msg); |
| rewriteMessage(touchState, msg); |
| } |
| break; |
| } |
| |
| case AMOTION_EVENT_ACTION_POINTER_DOWN: { |
| ssize_t index = findTouchState(deviceId, source); |
| if (index >= 0) { |
| TouchState& touchState = mTouchStates[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[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) { |
| TouchState& touchState = mTouchStates[index]; |
| rewriteMessage(touchState, msg); |
| } |
| break; |
| } |
| |
| case AMOTION_EVENT_ACTION_UP: |
| case AMOTION_EVENT_ACTION_CANCEL: { |
| ssize_t index = findTouchState(deviceId, source); |
| if (index >= 0) { |
| TouchState& touchState = mTouchStates[index]; |
| rewriteMessage(touchState, msg); |
| mTouchStates.erase(mTouchStates.begin() + index); |
| } |
| break; |
| } |
| } |
| } |
| |
| /** |
| * Replace the coordinates in msg with the coordinates in lastResample, if necessary. |
| * |
| * If lastResample is no longer valid for a specific pointer (i.e. the lastResample time |
| * is in the past relative to msg and the past two events do not contain identical coordinates), |
| * then invalidate the lastResample data for that pointer. |
| * If the two past events have identical coordinates, then lastResample data for that pointer will |
| * remain valid, and will be used to replace these coordinates. Thus, if a certain coordinate x0 is |
| * resampled to the new value x1, then x1 will always be used to replace x0 until some new value |
| * not equal to x0 is received. |
| */ |
| void InputConsumer::rewriteMessage(TouchState& state, InputMessage& msg) { |
| nsecs_t eventTime = msg.body.motion.eventTime; |
| for (uint32_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)) { |
| if (eventTime < state.lastResample.eventTime || |
| state.recentCoordinatesAreIdentical(id)) { |
| PointerCoords& msgCoords = msg.body.motion.pointers[i].coords; |
| const PointerCoords& resampleCoords = state.lastResample.getPointerById(id); |
| ALOGD_IF(debugResampling(), "[%d] - rewrite (%0.3f, %0.3f), old (%0.3f, %0.3f)", id, |
| resampleCoords.getX(), resampleCoords.getY(), msgCoords.getX(), |
| msgCoords.getY()); |
| msgCoords.setAxisValue(AMOTION_EVENT_AXIS_X, resampleCoords.getX()); |
| msgCoords.setAxisValue(AMOTION_EVENT_AXIS_Y, resampleCoords.getY()); |
| msgCoords.isResampled = true; |
| } else { |
| state.lastResample.idBits.clearBit(id); |
| } |
| } |
| } |
| } |
| |
| void InputConsumer::resampleTouchState(nsecs_t sampleTime, MotionEvent* event, |
| const InputMessage* next) { |
| if (!mResampleTouch |
| || !(isPointerEvent(event->getSource())) |
| || event->getAction() != AMOTION_EVENT_ACTION_MOVE) { |
| return; |
| } |
| |
| ssize_t index = findTouchState(event->getDeviceId(), event->getSource()); |
| if (index < 0) { |
| ALOGD_IF(debugResampling(), "Not resampled, no touch state for device."); |
| return; |
| } |
| |
| TouchState& touchState = mTouchStates[index]; |
| if (touchState.historySize < 1) { |
| ALOGD_IF(debugResampling(), "Not resampled, no history for device."); |
| 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)) { |
| ALOGD_IF(debugResampling(), "Not resampled, missing id %d", id); |
| 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) { |
| ALOGD_IF(debugResampling(), "Not resampled, delta time is too small: %" PRId64 " ns.", |
| delta); |
| 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) { |
| ALOGD_IF(debugResampling(), "Not resampled, delta time is too small: %" PRId64 " ns.", |
| delta); |
| return; |
| } else if (delta > RESAMPLE_MAX_DELTA) { |
| ALOGD_IF(debugResampling(), "Not resampled, delta time is too large: %" PRId64 " ns.", |
| delta); |
| return; |
| } |
| nsecs_t maxPredict = current->eventTime + min(delta / 2, RESAMPLE_MAX_PREDICTION); |
| if (sampleTime > maxPredict) { |
| ALOGD_IF(debugResampling(), |
| "Sample time is too far in the future, adjusting prediction " |
| "from %" PRId64 " to %" PRId64 " ns.", |
| sampleTime - current->eventTime, maxPredict - current->eventTime); |
| sampleTime = maxPredict; |
| } |
| alpha = float(current->eventTime - sampleTime) / delta; |
| } else { |
| ALOGD_IF(debugResampling(), "Not resampled, insufficient data."); |
| return; |
| } |
| |
| if (current->eventTime == sampleTime) { |
| // Prevents having 2 events with identical times and coordinates. |
| return; |
| } |
| |
| // Resample touch coordinates. |
| History oldLastResample; |
| oldLastResample.initializeFrom(touchState.lastResample); |
| 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); |
| if (oldLastResample.hasPointerId(id) && touchState.recentCoordinatesAreIdentical(id)) { |
| // We maintain the previously resampled value for this pointer (stored in |
| // oldLastResample) when the coordinates for this pointer haven't changed since then. |
| // This way we don't introduce artificial jitter when pointers haven't actually moved. |
| // The isResampled flag isn't cleared as the values don't reflect what the device is |
| // actually reporting. |
| |
| // We know here that the coordinates for the pointer haven't changed because we |
| // would've cleared the resampled bit in rewriteMessage if they had. We can't modify |
| // lastResample in place becasue the mapping from pointer ID to index may have changed. |
| touchState.lastResample.pointers[i] = oldLastResample.getPointerById(id); |
| continue; |
| } |
| |
| PointerCoords& resampledCoords = touchState.lastResample.pointers[i]; |
| const PointerCoords& currentCoords = current->getPointerById(id); |
| resampledCoords = currentCoords; |
| resampledCoords.isResampled = true; |
| if (other->idBits.hasBit(id) && shouldResampleTool(event->getToolType(i))) { |
| const PointerCoords& otherCoords = other->getPointerById(id); |
| resampledCoords.setAxisValue(AMOTION_EVENT_AXIS_X, |
| lerp(currentCoords.getX(), otherCoords.getX(), alpha)); |
| resampledCoords.setAxisValue(AMOTION_EVENT_AXIS_Y, |
| lerp(currentCoords.getY(), otherCoords.getY(), alpha)); |
| ALOGD_IF(debugResampling(), |
| "[%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); |
| } else { |
| ALOGD_IF(debugResampling(), "[%d] - out (%0.3f, %0.3f), cur (%0.3f, %0.3f)", id, |
| resampledCoords.getX(), resampledCoords.getY(), currentCoords.getX(), |
| currentCoords.getY()); |
| } |
| } |
| |
| event->addSample(sampleTime, touchState.lastResample.pointers); |
| } |
| |
| status_t InputConsumer::sendFinishedSignal(uint32_t seq, bool handled) { |
| ALOGD_IF(DEBUG_TRANSPORT_CONSUMER, |
| "channel '%s' consumer ~ sendFinishedSignal: seq=%u, handled=%s", |
| mChannel->getName().c_str(), seq, toString(handled)); |
| |
| 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; ) { |
| i--; |
| const SeqChain& seqChain = mSeqChains[i]; |
| if (seqChain.seq == currentSeq) { |
| currentSeq = seqChain.chain; |
| chainSeqs[chainIndex++] = currentSeq; |
| mSeqChains.erase(mSeqChains.begin() + i); |
| } |
| } |
| status_t status = OK; |
| while (!status && chainIndex > 0) { |
| chainIndex--; |
| status = sendUnchainedFinishedSignal(chainSeqs[chainIndex], handled); |
| } |
| if (status) { |
| // An error occurred so at least one signal was not sent, reconstruct the chain. |
| for (;;) { |
| SeqChain seqChain; |
| seqChain.seq = chainIndex != 0 ? chainSeqs[chainIndex - 1] : seq; |
| seqChain.chain = chainSeqs[chainIndex]; |
| mSeqChains.push_back(seqChain); |
| if (!chainIndex) break; |
| chainIndex--; |
| } |
| return status; |
| } |
| } |
| |
| // Send finished signal for the last message in the batch. |
| return sendUnchainedFinishedSignal(seq, handled); |
| } |
| |
| status_t InputConsumer::sendTimeline(int32_t inputEventId, |
| std::array<nsecs_t, GraphicsTimeline::SIZE> graphicsTimeline) { |
| ALOGD_IF(DEBUG_TRANSPORT_CONSUMER, |
| "channel '%s' consumer ~ sendTimeline: inputEventId=%" PRId32 |
| ", gpuCompletedTime=%" PRId64 ", presentTime=%" PRId64, |
| mChannel->getName().c_str(), inputEventId, |
| graphicsTimeline[GraphicsTimeline::GPU_COMPLETED_TIME], |
| graphicsTimeline[GraphicsTimeline::PRESENT_TIME]); |
| |
| InputMessage msg; |
| msg.header.type = InputMessage::Type::TIMELINE; |
| msg.header.seq = 0; |
| msg.body.timeline.eventId = inputEventId; |
| msg.body.timeline.graphicsTimeline = std::move(graphicsTimeline); |
| return mChannel->sendMessage(&msg); |
| } |
| |
| nsecs_t InputConsumer::getConsumeTime(uint32_t seq) const { |
| auto it = mConsumeTimes.find(seq); |
| // Consume time will be missing if either 'finishInputEvent' is called twice, or if it was |
| // called for the wrong (synthetic?) input event. Either way, it is a bug that should be fixed. |
| LOG_ALWAYS_FATAL_IF(it == mConsumeTimes.end(), "Could not find consume time for seq=%" PRIu32, |
| seq); |
| return it->second; |
| } |
| |
| void InputConsumer::popConsumeTime(uint32_t seq) { |
| mConsumeTimes.erase(seq); |
| } |
| |
| status_t InputConsumer::sendUnchainedFinishedSignal(uint32_t seq, bool handled) { |
| InputMessage msg; |
| msg.header.type = InputMessage::Type::FINISHED; |
| msg.header.seq = seq; |
| msg.body.finished.handled = handled; |
| msg.body.finished.consumeTime = getConsumeTime(seq); |
| status_t result = mChannel->sendMessage(&msg); |
| if (result == OK) { |
| // Remove the consume time if the socket write succeeded. We will not need to ack this |
| // message anymore. If the socket write did not succeed, we will try again and will still |
| // need consume time. |
| popConsumeTime(seq); |
| } |
| return result; |
| } |
| |
| bool InputConsumer::hasPendingBatch() const { |
| return !mBatches.empty(); |
| } |
| |
| int32_t InputConsumer::getPendingBatchSource() const { |
| if (mBatches.empty()) { |
| return AINPUT_SOURCE_CLASS_NONE; |
| } |
| |
| const Batch& batch = mBatches[0]; |
| const InputMessage& head = batch.samples[0]; |
| return head.body.motion.source; |
| } |
| |
| ssize_t InputConsumer::findBatch(int32_t deviceId, int32_t source) const { |
| for (size_t i = 0; i < mBatches.size(); i++) { |
| const Batch& batch = mBatches[i]; |
| const InputMessage& head = batch.samples[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[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.eventId, msg->body.key.deviceId, msg->body.key.source, |
| msg->body.key.displayId, msg->body.key.hmac, 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::initializeFocusEvent(FocusEvent* event, const InputMessage* msg) { |
| event->initialize(msg->body.focus.eventId, msg->body.focus.hasFocus); |
| } |
| |
| void InputConsumer::initializeCaptureEvent(CaptureEvent* event, const InputMessage* msg) { |
| event->initialize(msg->body.capture.eventId, msg->body.capture.pointerCaptureEnabled); |
| } |
| |
| void InputConsumer::initializeDragEvent(DragEvent* event, const InputMessage* msg) { |
| event->initialize(msg->body.drag.eventId, msg->body.drag.x, msg->body.drag.y, |
| msg->body.drag.isExiting); |
| } |
| |
| void InputConsumer::initializeMotionEvent(MotionEvent* event, const InputMessage* msg) { |
| uint32_t pointerCount = msg->body.motion.pointerCount; |
| PointerProperties pointerProperties[pointerCount]; |
| PointerCoords pointerCoords[pointerCount]; |
| for (uint32_t i = 0; i < pointerCount; i++) { |
| pointerProperties[i] = msg->body.motion.pointers[i].properties; |
| pointerCoords[i] = msg->body.motion.pointers[i].coords; |
| } |
| |
| ui::Transform transform; |
| transform.set({msg->body.motion.dsdx, msg->body.motion.dtdx, msg->body.motion.tx, |
| msg->body.motion.dtdy, msg->body.motion.dsdy, msg->body.motion.ty, 0, 0, 1}); |
| ui::Transform displayTransform; |
| displayTransform.set({msg->body.motion.dsdxRaw, msg->body.motion.dtdxRaw, |
| msg->body.motion.txRaw, msg->body.motion.dtdyRaw, |
| msg->body.motion.dsdyRaw, msg->body.motion.tyRaw, 0, 0, 1}); |
| event->initialize(msg->body.motion.eventId, msg->body.motion.deviceId, msg->body.motion.source, |
| msg->body.motion.displayId, msg->body.motion.hmac, msg->body.motion.action, |
| msg->body.motion.actionButton, msg->body.motion.flags, |
| msg->body.motion.edgeFlags, msg->body.motion.metaState, |
| msg->body.motion.buttonState, msg->body.motion.classification, transform, |
| msg->body.motion.xPrecision, msg->body.motion.yPrecision, |
| msg->body.motion.xCursorPosition, msg->body.motion.yCursorPosition, |
| displayTransform, msg->body.motion.downTime, msg->body.motion.eventTime, |
| pointerCount, pointerProperties, pointerCoords); |
| } |
| |
| void InputConsumer::initializeTouchModeEvent(TouchModeEvent* event, const InputMessage* msg) { |
| event->initialize(msg->body.touchMode.eventId, msg->body.touchMode.isInTouchMode); |
| } |
| |
| void InputConsumer::addSample(MotionEvent* event, const InputMessage* msg) { |
| uint32_t pointerCount = msg->body.motion.pointerCount; |
| PointerCoords pointerCoords[pointerCount]; |
| for (uint32_t i = 0; i < pointerCount; i++) { |
| pointerCoords[i] = 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[0]; |
| uint32_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[index].body.motion.eventTime <= time) { |
| index += 1; |
| } |
| return ssize_t(index) - 1; |
| } |
| |
| std::string InputConsumer::dump() const { |
| std::string out; |
| out = out + "mResampleTouch = " + toString(mResampleTouch) + "\n"; |
| out = out + "mChannel = " + mChannel->getName() + "\n"; |
| out = out + "mMsgDeferred: " + toString(mMsgDeferred) + "\n"; |
| if (mMsgDeferred) { |
| out = out + "mMsg : " + ftl::enum_string(mMsg.header.type) + "\n"; |
| } |
| out += "Batches:\n"; |
| for (const Batch& batch : mBatches) { |
| out += " Batch:\n"; |
| for (const InputMessage& msg : batch.samples) { |
| out += android::base::StringPrintf(" Message %" PRIu32 ": %s ", msg.header.seq, |
| ftl::enum_string(msg.header.type).c_str()); |
| switch (msg.header.type) { |
| case InputMessage::Type::KEY: { |
| out += android::base::StringPrintf("action=%s keycode=%" PRId32, |
| KeyEvent::actionToString( |
| msg.body.key.action), |
| msg.body.key.keyCode); |
| break; |
| } |
| case InputMessage::Type::MOTION: { |
| out = out + "action=" + MotionEvent::actionToString(msg.body.motion.action); |
| for (uint32_t i = 0; i < msg.body.motion.pointerCount; i++) { |
| const float x = msg.body.motion.pointers[i].coords.getX(); |
| const float y = msg.body.motion.pointers[i].coords.getY(); |
| out += android::base::StringPrintf("\n Pointer %" PRIu32 |
| " : x=%.1f y=%.1f", |
| i, x, y); |
| } |
| break; |
| } |
| case InputMessage::Type::FINISHED: { |
| out += android::base::StringPrintf("handled=%s, consumeTime=%" PRId64, |
| toString(msg.body.finished.handled), |
| msg.body.finished.consumeTime); |
| break; |
| } |
| case InputMessage::Type::FOCUS: { |
| out += android::base::StringPrintf("hasFocus=%s", |
| toString(msg.body.focus.hasFocus)); |
| break; |
| } |
| case InputMessage::Type::CAPTURE: { |
| out += android::base::StringPrintf("hasCapture=%s", |
| toString(msg.body.capture |
| .pointerCaptureEnabled)); |
| break; |
| } |
| case InputMessage::Type::DRAG: { |
| out += android::base::StringPrintf("x=%.1f y=%.1f, isExiting=%s", |
| msg.body.drag.x, msg.body.drag.y, |
| toString(msg.body.drag.isExiting)); |
| break; |
| } |
| case InputMessage::Type::TIMELINE: { |
| const nsecs_t gpuCompletedTime = |
| msg.body.timeline |
| .graphicsTimeline[GraphicsTimeline::GPU_COMPLETED_TIME]; |
| const nsecs_t presentTime = |
| msg.body.timeline.graphicsTimeline[GraphicsTimeline::PRESENT_TIME]; |
| out += android::base::StringPrintf("inputEventId=%" PRId32 |
| ", gpuCompletedTime=%" PRId64 |
| ", presentTime=%" PRId64, |
| msg.body.timeline.eventId, gpuCompletedTime, |
| presentTime); |
| break; |
| } |
| case InputMessage::Type::TOUCH_MODE: { |
| out += android::base::StringPrintf("isInTouchMode=%s", |
| toString(msg.body.touchMode.isInTouchMode)); |
| break; |
| } |
| } |
| out += "\n"; |
| } |
| } |
| if (mBatches.empty()) { |
| out += " <empty>\n"; |
| } |
| out += "mSeqChains:\n"; |
| for (const SeqChain& chain : mSeqChains) { |
| out += android::base::StringPrintf(" chain: seq = %" PRIu32 " chain=%" PRIu32, chain.seq, |
| chain.chain); |
| } |
| if (mSeqChains.empty()) { |
| out += " <empty>\n"; |
| } |
| out += "mConsumeTimes:\n"; |
| for (const auto& [seq, consumeTime] : mConsumeTimes) { |
| out += android::base::StringPrintf(" seq = %" PRIu32 " consumeTime = %" PRId64, seq, |
| consumeTime); |
| } |
| if (mConsumeTimes.empty()) { |
| out += " <empty>\n"; |
| } |
| return out; |
| } |
| |
| } // namespace android |
