| // Copyright 2019 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "src/ui/lib/input_reader/hardcoded.h" |
| |
| #include <fuchsia/hardware/input/c/fidl.h> |
| #include <fuchsia/ui/input/cpp/fidl.h> |
| #include <lib/fostr/fidl/fuchsia/ui/input/formatting.h> |
| #include <sys/types.h> |
| #include <sys/uio.h> |
| #include <zircon/errors.h> |
| #include <zircon/types.h> |
| |
| #include <hid-parser/parser.h> |
| #include <hid-parser/usages.h> |
| #include <hid/acer12.h> |
| #include <hid/ambient-light.h> |
| #include <hid/boot.h> |
| #include <hid/egalax.h> |
| #include <hid/eyoyo.h> |
| #include <hid/ft3x27.h> |
| #include <hid/hid.h> |
| #include <hid/paradise.h> |
| #include <hid/samsung.h> |
| #include <hid/usages.h> |
| #include <trace/event.h> |
| |
| #include "src/lib/fxl/arraysize.h" |
| #include "src/lib/fxl/logging.h" |
| #include "src/lib/fxl/time/time_point.h" |
| |
| namespace { |
| |
| int64_t InputEventTimestampNow() { return fxl::TimePoint::Now().ToEpochDelta().ToNanoseconds(); } |
| |
| fuchsia::ui::input::InputReport CloneReport(const fuchsia::ui::input::InputReport& report) { |
| fuchsia::ui::input::InputReport result; |
| fidl::Clone(report, &result); |
| return result; |
| } |
| |
| // Casting from unsigned to signed can change the bit pattern so |
| // we need to resort to this method. |
| int8_t signed_bit_cast(uint8_t src) { |
| int8_t dest; |
| memcpy(&dest, &src, sizeof(uint8_t)); |
| return dest; |
| } |
| |
| // Extracts up to 8 bits unsigned number from a byte array |v|. |
| // Both |begin| and |count| are in bits units. This function does not |
| // check for the array being long enough. |
| static uint8_t extract_uint8(const uint8_t* v, uint32_t begin, uint32_t count) { |
| uint8_t val = v[begin / 8u] >> (begin % 8u); |
| return (count < 8) ? (val & ~(1u << count)) : val; |
| } |
| |
| // Extracts a 16 bits unsigned number from a byte array |v|. |
| // |begin| is in bits units. This function does not check for the array |
| // being long enough. |
| static uint16_t extract_uint16(const uint8_t* v, uint32_t begin) { |
| return static_cast<uint16_t>(extract_uint8(v, begin, 8)) | |
| static_cast<uint16_t>(extract_uint8(v, begin + 8, 8)) << 8; |
| } |
| |
| // Extracts up to 8 bits sign extended to int32_t from a byte array |v|. |
| // Both |begin| and |count| are in bits units. This function does not |
| // check for the array being long enough. |
| static int32_t extract_int8_ext(const uint8_t* v, uint32_t begin, uint32_t count) { |
| uint8_t val = extract_uint8(v, begin, count); |
| return signed_bit_cast(val); |
| } |
| |
| // TODO(SCN-473): Extract sensor IDs from HID. |
| const size_t kParadiseAccLid = 0; |
| const size_t kParadiseAccBase = 1; |
| const size_t kAmbientLight = 2; |
| |
| } // namespace |
| |
| namespace ui_input { |
| |
| bool Hardcoded::ParseGamepadDescriptor(const hid::ReportField* fields, size_t count) { |
| // Need to recover the five fields as seen in HidGamepadSimple and put |
| // them into the decoder_ in the same order. |
| if (count < 5u) |
| return false; |
| |
| decoder_.resize(6u); |
| uint8_t offset = 0; |
| |
| if (fields[0].report_id != 0) { |
| // If exists, the first entry (8-bits) is always the report id and |
| // all items start after the first byte. |
| decoder_[0] = DataLocator{0u, 8u, fields[0].report_id}; |
| offset = 8u; |
| } |
| |
| // Needs to be kept in sync with HidGamepadSimple {}. |
| const uint16_t table[] = { |
| static_cast<uint16_t>(hid::usage::GenericDesktop::kX), // left X. |
| static_cast<uint16_t>(hid::usage::GenericDesktop::kY), // left Y. |
| static_cast<uint16_t>(hid::usage::GenericDesktop::kZ), // right X. |
| static_cast<uint16_t>(hid::usage::GenericDesktop::kRz), // right Y. |
| static_cast<uint16_t>(hid::usage::GenericDesktop::kHatSwitch) // buttons |
| }; |
| |
| uint32_t bit_count = 0; |
| |
| // Traverse each input report field and see if there is a match in the table. |
| // If so place the location in |decoder_| array. |
| for (size_t ix = 0; ix != count; ix++) { |
| if (fields[ix].type != hid::kInput) |
| continue; |
| |
| for (size_t iy = 0; iy != arraysize(table); iy++) { |
| if (fields[ix].attr.usage.usage == table[iy]) { |
| // Found a required usage. |
| decoder_[iy + 1] = DataLocator{bit_count + offset, fields[ix].attr.bit_sz, 0}; |
| break; |
| } |
| } |
| |
| bit_count += fields[ix].attr.bit_sz; |
| } |
| |
| // Here |decoder_| should look like this: |
| // [rept_id][left X][left Y]....[hat_sw] |
| // With each box, the location in a report for each item, for example: |
| // [0, 0, 0][24, 0, 0][8, 0, 0][0, 0, 0]...[64, 4, 0] |
| return true; |
| } |
| |
| bool Hardcoded::ParseAmbientLightDescriptor(const hid::ReportField* fields, size_t count) { |
| if (count == 0u) |
| return false; |
| |
| decoder_.resize(2u); |
| uint8_t offset = 0; |
| |
| if (fields[0].report_id != 0) { |
| // If exists, the first entry (8-bits) is always the report id and |
| // all items start after the first byte. |
| decoder_[0] = DataLocator{0u, 8u, fields[0].report_id}; |
| offset = 8u; |
| } |
| |
| uint32_t bit_count = 0; |
| |
| // Traverse each input report field and see if there is a match in the table. |
| // If so place the location in |decoder_| array. |
| for (size_t ix = 0; ix != count; ix++) { |
| if (fields[ix].type != hid::kInput) |
| continue; |
| |
| if (fields[ix].attr.usage.usage == hid::usage::Sensor::kLightIlluminance) { |
| decoder_[1] = DataLocator{bit_count + offset, fields[ix].attr.bit_sz, 0}; |
| // Found a required usage. |
| // Here |decoder_| should look like this: |
| // [rept_id][abs_light] |
| return true; |
| } |
| |
| bit_count += fields[ix].attr.bit_sz; |
| } |
| return false; |
| } |
| |
| void Hardcoded::ParseMouseReport(const uint8_t* r, size_t len, |
| fuchsia::ui::input::InputReport* mouse_report) { |
| auto report = reinterpret_cast<const hid_boot_mouse_report_t*>(r); |
| mouse_report->event_time = InputEventTimestampNow(); |
| mouse_report->trace_id = TRACE_NONCE(); |
| |
| mouse_report->mouse->rel_x = report->rel_x; |
| mouse_report->mouse->rel_y = report->rel_y; |
| mouse_report->mouse->pressed_buttons = report->buttons; |
| FXL_VLOG(2) << name() << " parsed: " << *mouse_report; |
| } |
| |
| bool Hardcoded::ParseReport(const uint8_t* report, size_t len, HidGamepadSimple* gamepad) { |
| auto cur = &decoder_[0]; |
| if ((cur->match != 0) && (cur->count == 8u)) { |
| // The first byte is the report id. |
| if (report[0] != cur->match) { |
| // This is a normal condition. The device can generate reports |
| // for controls we don't yet handle. |
| *gamepad = {}; |
| return true; |
| } |
| ++cur; |
| } |
| |
| gamepad->left_x = extract_int8_ext(report, cur->begin, cur->count) / 2; |
| ++cur; |
| gamepad->left_y = extract_int8_ext(report, cur->begin, cur->count) / 2; |
| ++cur; |
| gamepad->right_x = extract_int8_ext(report, cur->begin, cur->count) / 2; |
| ++cur; |
| gamepad->right_y = extract_int8_ext(report, cur->begin, cur->count) / 2; |
| ++cur; |
| gamepad->hat_switch = extract_int8_ext(report, cur->begin, cur->count); |
| return true; |
| } |
| |
| bool Hardcoded::ParseGamepadMouseReport(const uint8_t* report, size_t len, |
| fuchsia::ui::input::InputReport* mouse_report) { |
| HidGamepadSimple gamepad = {}; |
| if (!ParseReport(report, len, &gamepad)) |
| return false; |
| mouse_report->event_time = InputEventTimestampNow(); |
| mouse_report->trace_id = TRACE_NONCE(); |
| |
| mouse_report->mouse->rel_x = gamepad.left_x; |
| mouse_report->mouse->rel_y = gamepad.left_y; |
| mouse_report->mouse->pressed_buttons = gamepad.hat_switch; |
| return true; |
| } |
| bool Hardcoded::ParseParadiseSensorReport(const uint8_t* r, size_t len, uint8_t* sensor_idx, |
| fuchsia::ui::input::InputReport* sensor_report) { |
| if (len != sizeof(paradise_sensor_vector_data_t) && |
| len != sizeof(paradise_sensor_scalar_data_t)) { |
| FXL_LOG(INFO) << "paradise sensor data: wrong size " << len << ", expected " |
| << sizeof(paradise_sensor_vector_data_t) << " or " |
| << sizeof(paradise_sensor_scalar_data_t); |
| return false; |
| } |
| |
| sensor_report->event_time = InputEventTimestampNow(); |
| sensor_report->trace_id = TRACE_NONCE(); |
| *sensor_idx = r[0]; // We know sensor structs start with sensor ID. |
| switch (*sensor_idx) { |
| case kParadiseAccLid: |
| case kParadiseAccBase: { |
| const auto& report = *(reinterpret_cast<const paradise_sensor_vector_data_t*>(r)); |
| std::array<int16_t, 3> data; |
| data[0] = report.vector[0]; |
| data[1] = report.vector[1]; |
| data[2] = report.vector[2]; |
| sensor_report->sensor->set_vector(std::move(data)); |
| } break; |
| case 2: |
| case 3: |
| case 4: |
| // TODO(SCN-626): Expose other sensors. |
| return false; |
| default: |
| FXL_LOG(ERROR) << "paradise sensor unrecognized: " << *sensor_idx; |
| return false; |
| } |
| |
| FXL_VLOG(3) << name() << " parsed (sensor=" << static_cast<uint16_t>(*sensor_idx) |
| << "): " << *sensor_report; |
| return true; |
| } |
| |
| bool Hardcoded::ParseReport(const uint8_t* report, size_t len, HidAmbientLightSimple* data) { |
| auto cur = &decoder_[0]; |
| if ((cur->match != 0) && (cur->count == 8u)) { |
| // The first byte is the report id. |
| if (report[0] != cur->match) { |
| // This is a normal condition. The device can generate reports |
| // for controls we don't yet handle. |
| *data = {}; |
| return true; |
| } |
| ++cur; |
| } |
| if (cur->count != 16u) { |
| FXL_LOG(ERROR) << "Unexpected count in report from ambient light:" << cur->count; |
| return false; |
| } |
| data->illuminance = extract_uint16(report, cur->begin); |
| return true; |
| } |
| |
| bool Hardcoded::ParseAmbientLightSensorReport(const uint8_t* report, size_t len, |
| uint8_t* sensor_idx, |
| fuchsia::ui::input::InputReport* sensor_report) { |
| HidAmbientLightSimple data; |
| if (!ParseReport(report, len, &data)) { |
| FXL_LOG(ERROR) << " failed reading from ambient light sensor"; |
| return false; |
| } |
| sensor_report->sensor->set_scalar(data.illuminance); |
| sensor_report->event_time = InputEventTimestampNow(); |
| sensor_report->trace_id = TRACE_NONCE(); |
| *sensor_idx = kAmbientLight; |
| |
| FXL_VLOG(2) << name() << " parsed (sensor=" << static_cast<uint16_t>(*sensor_idx) |
| << "): " << *sensor_report; |
| return true; |
| } |
| |
| Protocol Hardcoded::MatchProtocol(const std::vector<uint8_t> desc, HidDecoder* hid_decoder) { |
| if (is_paradise_sensor_report_desc(desc.data(), desc.size())) { |
| return Protocol::ParadiseSensor; |
| } |
| return Protocol::Other; |
| } |
| |
| void Hardcoded::Initialize(Protocol protocol) { |
| protocol_ = protocol; |
| |
| if (protocol == Protocol::BootMouse || protocol == Protocol::Gamepad) { |
| FXL_VLOG(2) << "Device " << name() << " has mouse"; |
| has_mouse_ = true; |
| mouse_device_type_ = |
| (protocol == Protocol::BootMouse) ? MouseDeviceType::BOOT : MouseDeviceType::GAMEPAD; |
| |
| mouse_descriptor_ = fuchsia::ui::input::MouseDescriptor::New(); |
| mouse_descriptor_->rel_x.range.min = INT32_MIN; |
| mouse_descriptor_->rel_x.range.max = INT32_MAX; |
| mouse_descriptor_->rel_x.resolution = 1; |
| |
| mouse_descriptor_->rel_y.range.min = INT32_MIN; |
| mouse_descriptor_->rel_y.range.max = INT32_MAX; |
| mouse_descriptor_->rel_y.resolution = 1; |
| |
| mouse_descriptor_->buttons |= fuchsia::ui::input::kMouseButtonPrimary; |
| mouse_descriptor_->buttons |= fuchsia::ui::input::kMouseButtonSecondary; |
| mouse_descriptor_->buttons |= fuchsia::ui::input::kMouseButtonTertiary; |
| |
| mouse_report_ = fuchsia::ui::input::InputReport::New(); |
| mouse_report_->mouse = fuchsia::ui::input::MouseReport::New(); |
| } else if (protocol == Protocol::ParadiseSensor) { |
| FXL_VLOG(2) << "Device " << name() << " has motion sensors"; |
| sensor_device_type_ = SensorDeviceType::PARADISE; |
| has_sensors_ = true; |
| |
| fuchsia::ui::input::SensorDescriptorPtr acc_base = fuchsia::ui::input::SensorDescriptor::New(); |
| acc_base->type = fuchsia::ui::input::SensorType::ACCELEROMETER; |
| acc_base->loc = fuchsia::ui::input::SensorLocation::BASE; |
| sensor_descriptors_[kParadiseAccBase] = std::move(acc_base); |
| |
| fuchsia::ui::input::SensorDescriptorPtr acc_lid = fuchsia::ui::input::SensorDescriptor::New(); |
| acc_lid->type = fuchsia::ui::input::SensorType::ACCELEROMETER; |
| acc_lid->loc = fuchsia::ui::input::SensorLocation::LID; |
| sensor_descriptors_[kParadiseAccLid] = std::move(acc_lid); |
| |
| sensor_report_ = fuchsia::ui::input::InputReport::New(); |
| sensor_report_->sensor = fuchsia::ui::input::SensorReport::New(); |
| } else if (protocol == Protocol::LightSensor) { |
| FXL_VLOG(2) << "Device " << name() << " has an ambient light sensor"; |
| sensor_device_type_ = SensorDeviceType::AMBIENT_LIGHT; |
| has_sensors_ = true; |
| |
| fuchsia::ui::input::SensorDescriptorPtr desc = fuchsia::ui::input::SensorDescriptor::New(); |
| desc->type = fuchsia::ui::input::SensorType::LIGHTMETER; |
| desc->loc = fuchsia::ui::input::SensorLocation::UNKNOWN; |
| sensor_descriptors_[kAmbientLight] = std::move(desc); |
| |
| sensor_report_ = fuchsia::ui::input::InputReport::New(); |
| sensor_report_->sensor = fuchsia::ui::input::SensorReport::New(); |
| } |
| } |
| |
| void Hardcoded::NotifyRegistry(fuchsia::ui::input::InputDeviceRegistry* registry) { |
| if (has_sensors_) { |
| FXL_DCHECK(kMaxSensorCount == sensor_descriptors_.size()); |
| FXL_DCHECK(kMaxSensorCount == sensor_devices_.size()); |
| for (size_t i = 0; i < kMaxSensorCount; ++i) { |
| if (sensor_descriptors_[i]) { |
| fuchsia::ui::input::DeviceDescriptor descriptor; |
| zx_status_t status = fidl::Clone(sensor_descriptors_[i], &descriptor.sensor); |
| FXL_DCHECK(status == ZX_OK) << "Sensor descriptor: clone failed (status=" << status << ")"; |
| registry->RegisterDevice(std::move(descriptor), sensor_devices_[i].NewRequest()); |
| } |
| } |
| // Sensor devices can't be anything else, so don't bother with other types. |
| return; |
| } |
| |
| // Register the hardcoded device's descriptors. |
| { |
| fuchsia::ui::input::DeviceDescriptor descriptor; |
| if (has_mouse_) { |
| fidl::Clone(mouse_descriptor_, &descriptor.mouse); |
| } |
| if (has_stylus_) { |
| fidl::Clone(stylus_descriptor_, &descriptor.stylus); |
| } |
| if (has_touchscreen_) { |
| fidl::Clone(touchscreen_descriptor_, &descriptor.touchscreen); |
| } |
| registry->RegisterDevice(std::move(descriptor), input_device_.NewRequest()); |
| } |
| } |
| |
| void Hardcoded::Read(const uint8_t* report, int report_len, bool discard) { |
| switch (mouse_device_type_) { |
| case MouseDeviceType::BOOT: |
| ParseMouseReport(report, report_len, mouse_report_.get()); |
| if (!discard) { |
| TRACE_FLOW_BEGIN("input", "hid_read_to_listener", mouse_report_->trace_id); |
| input_device_->DispatchReport(CloneReport(*mouse_report_)); |
| } |
| break; |
| case MouseDeviceType::GAMEPAD: |
| // TODO(cpu): remove this once we have a good way to test gamepad. |
| if (ParseGamepadMouseReport(report, report_len, mouse_report_.get())) { |
| if (!discard) { |
| TRACE_FLOW_BEGIN("input", "hid_read_to_listener", mouse_report_->trace_id); |
| input_device_->DispatchReport(CloneReport(*mouse_report_)); |
| } |
| } |
| break; |
| case MouseDeviceType::NONE: |
| break; |
| default: |
| break; |
| } |
| |
| switch (sensor_device_type_) { |
| case SensorDeviceType::PARADISE: |
| if (ParseParadiseSensorReport(report, report_len, &sensor_idx_, sensor_report_.get())) { |
| if (!discard) { |
| FXL_DCHECK(sensor_idx_ < kMaxSensorCount); |
| FXL_DCHECK(sensor_devices_[sensor_idx_]); |
| TRACE_FLOW_BEGIN("input", "hid_read_to_listener", sensor_report_->trace_id); |
| sensor_devices_[sensor_idx_]->DispatchReport(CloneReport(*sensor_report_)); |
| } |
| } |
| break; |
| case SensorDeviceType::AMBIENT_LIGHT: |
| if (ParseAmbientLightSensorReport(report, report_len, &sensor_idx_, sensor_report_.get())) { |
| if (!discard) { |
| FXL_DCHECK(sensor_idx_ < kMaxSensorCount); |
| FXL_DCHECK(sensor_devices_[sensor_idx_]); |
| TRACE_FLOW_BEGIN("input", "hid_read_to_listener", sensor_report_->trace_id); |
| sensor_devices_[sensor_idx_]->DispatchReport(CloneReport(*sensor_report_)); |
| } |
| } |
| break; |
| default: |
| break; |
| } |
| } |
| |
| } // namespace ui_input |