src/ui/lib/input_report_reader/input_interpreter.cc - fuchsia - Git at Google

 // Copyright 2020 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_report_reader/input_interpreter.h"

 #include <fuchsia/ui/input/cpp/fidl.h>
 #include <lib/fidl/cpp/clone.h>
 #include <lib/syslog/cpp/macros.h>
 #include <lib/trace/event.h>
 #include <sys/types.h>
 #include <sys/uio.h>
 #include <zircon/errors.h>
 #include <zircon/types.h>

 namespace ui_input {

 namespace {

 fuchsia::ui::input::Axis ConvertAxis(fuchsia::input::report::Axis axis) {
   fuchsia::ui::input::Axis a = {};
   a.range.min = static_cast<int32_t>(axis.range.min);
   a.range.max = static_cast<int32_t>(axis.range.max);
   return a;
 }

 // Sets the fuchsia::ui::input Mouse button bit vector.
 // prev_buttons represents the current button bit vector.
 // button_id is the new button to set.
 // The function returns the new button bit vector.
 uint32_t SetMouseButton(uint32_t prev_buttons, uint8_t button_id) {
   if (button_id == 0 || button_id > 32) {
     return prev_buttons;
   }
   return prev_buttons | (1 << (button_id - 1));
 }

 }  // namespace

 InputInterpreter::InputInterpreter(InputReaderBase* base,
                                    fuchsia::ui::input::InputDeviceRegistry* registry,
                                    std::string name)
     : base_(base), registry_(registry), name_(name) {}

 InputInterpreter::~InputInterpreter() {}

 void InputInterpreter::DispatchReport(const fuchsia::ui::input::InputDevicePtr& device,
                                       fuchsia::ui::input::InputReport report) {
   report.trace_id = TRACE_NONCE();
   TRACE_FLOW_BEGIN("input", "hid_read_to_listener", report.trace_id);
   device->DispatchReport(std::move(report));
 }

 std::unique_ptr<InputInterpreter> InputInterpreter::Create(
     InputReaderBase* base, zx::channel channel, fuchsia::ui::input::InputDeviceRegistry* registry,
     std::string name) {
   // Using `new` to access a non-public constructor.
   auto interpreter = std::unique_ptr<InputInterpreter>(new InputInterpreter(base, registry, name));
   zx_status_t status = interpreter->device_.Bind(std::move(channel));
   if (status != ZX_OK) {
     FX_LOGS(ERROR) << "InputInterpreter::Create: Bind error: " << status;
     return nullptr;
   }
   interpreter->Initialize();
   return interpreter;
 }

 void InputInterpreter::Initialize() {
   device_.set_error_handler([this](zx_status_t status) {
     if (status != ZX_ERR_PEER_CLOSED) {
       FX_LOGS(ERROR) << "InputInterpreter: Device error: " << status;
     }
     base_->RemoveDevice(this);
   });

   RegisterDevices();
 }

 void InputInterpreter::RegisterConsumerControl(
     const fuchsia::input::report::DeviceDescriptor& descriptor) {
   fuchsia::ui::input::DeviceDescriptor ui_descriptor;

   if (descriptor.has_device_info()) {
     auto info = std::make_unique<fuchsia::ui::input::DeviceInfo>();
     info->vendor_id = descriptor.device_info().vendor_id;
     info->product_id = descriptor.device_info().product_id;
     info->version = descriptor.device_info().version;
     ui_descriptor.device_info = std::move(info);
   }

   auto media_buttons = std::make_unique<fuchsia::ui::input::MediaButtonsDescriptor>();
   if (descriptor.consumer_control().input().has_buttons()) {
     for (auto button : descriptor.consumer_control().input().buttons()) {
       switch (button) {
         case fuchsia::input::report::ConsumerControlButton::VOLUME_UP:
           media_buttons->buttons |= fuchsia::ui::input::kVolumeUp;
           break;
         case fuchsia::input::report::ConsumerControlButton::VOLUME_DOWN:
           media_buttons->buttons |= fuchsia::ui::input::kVolumeDown;
           break;
         case fuchsia::input::report::ConsumerControlButton::MIC_MUTE:
           media_buttons->buttons |= fuchsia::ui::input::kMicMute;
           break;
         case fuchsia::input::report::ConsumerControlButton::PAUSE:
           media_buttons->buttons |= fuchsia::ui::input::kPause;
           break;
         case fuchsia::input::report::ConsumerControlButton::REBOOT:
           media_buttons->buttons |= fuchsia::ui::input::kReset;
           break;
         case fuchsia::input::report::ConsumerControlButton::CAMERA_DISABLE:
           media_buttons->buttons |= fuchsia::ui::input::kCameraDisable;
           break;
         default:
           break;
       }
     }
   }
   ui_descriptor.media_buttons = std::move(media_buttons);
   registry_->RegisterDevice(std::move(ui_descriptor), consumer_control_ptr_.NewRequest());
 }

 void InputInterpreter::RegisterMouse(const fuchsia::input::report::DeviceDescriptor& descriptor) {
   fuchsia::ui::input::DeviceDescriptor ui_descriptor;

   if (descriptor.has_device_info()) {
     auto info = std::make_unique<fuchsia::ui::input::DeviceInfo>();
     info->vendor_id = descriptor.device_info().vendor_id;
     info->product_id = descriptor.device_info().product_id;
     info->version = descriptor.device_info().version;
     ui_descriptor.device_info = std::move(info);
   }

   auto mouse = std::make_unique<fuchsia::ui::input::MouseDescriptor>();
   if (descriptor.mouse().input().has_movement_x()) {
     mouse->rel_x = ConvertAxis(descriptor.mouse().input().movement_x());
   }
   if (descriptor.mouse().input().has_movement_y()) {
     mouse->rel_y = ConvertAxis(descriptor.mouse().input().movement_y());
   }
   if (descriptor.mouse().input().has_buttons()) {
     for (uint8_t button : descriptor.mouse().input().buttons()) {
       mouse->buttons = SetMouseButton(mouse->buttons, button);
     }
   }
   ui_descriptor.mouse = std::move(mouse);
   registry_->RegisterDevice(std::move(ui_descriptor), mouse_ptr_.NewRequest());
 }

 void InputInterpreter::RegisterTouchscreen(
     const fuchsia::input::report::DeviceDescriptor& descriptor) {
   fuchsia::ui::input::DeviceDescriptor ui_descriptor;

   if (descriptor.has_device_info()) {
     auto info = std::make_unique<fuchsia::ui::input::DeviceInfo>();
     info->vendor_id = descriptor.device_info().vendor_id;
     info->product_id = descriptor.device_info().product_id;
     info->version = descriptor.device_info().version;
     ui_descriptor.device_info = std::move(info);
   }

   auto touch = std::make_unique<fuchsia::ui::input::TouchscreenDescriptor>();
   if (descriptor.touch().input().has_contacts()) {
     if (descriptor.touch().input().contacts()[0].has_position_x()) {
       touch->x.range.min =
           static_cast<int32_t>(descriptor.touch().input().contacts()[0].position_x().range.min);
       touch->x.range.max =
           static_cast<int32_t>(descriptor.touch().input().contacts()[0].position_x().range.max);
     }
     if (descriptor.touch().input().contacts()[0].has_position_y()) {
       touch->y.range.min =
           static_cast<int32_t>(descriptor.touch().input().contacts()[0].position_y().range.min);
       touch->y.range.max =
           static_cast<int32_t>(descriptor.touch().input().contacts()[0].position_y().range.max);
     }
   }
   if (descriptor.touch().input().has_max_contacts()) {
     touch->max_finger_id = descriptor.touch().input().max_contacts();
   }
   ui_descriptor.touchscreen = std::move(touch);
   registry_->RegisterDevice(std::move(ui_descriptor), touch_ptr_.NewRequest());
 }

 void InputInterpreter::RegisterDevices() {
   fuchsia::input::report::DeviceDescriptor descriptor;
   device_->GetDescriptor([this](fuchsia::input::report::DeviceDescriptor descriptor) {
     if (descriptor.has_touch() && descriptor.touch().has_input()) {
       if (descriptor.touch().input().has_touch_type() &&
           (descriptor.touch().input().touch_type() ==
            fuchsia::input::report::TouchType::TOUCHSCREEN)) {
         RegisterTouchscreen(descriptor);
       }
     }

     if (descriptor.has_mouse() && descriptor.mouse().has_input()) {
       RegisterMouse(descriptor);
     }

     if (descriptor.has_consumer_control() && descriptor.consumer_control().has_input()) {
       RegisterConsumerControl(descriptor);
     }

     // Now that devices are registered we can start reading requests.
     device_->GetInputReportsReader(reader_.NewRequest());
     reader_.set_error_handler([this](zx_status_t status) {
       if (status != ZX_ERR_PEER_CLOSED) {
         FX_LOGS(ERROR) << "InputInterpreter: Reader error: " << status;
       }
       base_->RemoveDevice(this);
     });

     // Kick off the first Read, which will queue up the rest of the reads.
     reader_->ReadInputReports([this](auto result) { ReadReports(std::move(result)); });
   });
 }

 void InputInterpreter::DispatchTouchReport(const fuchsia::input::report::InputReport& report) {
   fuchsia::ui::input::InputReport input_report;
   if (report.has_event_time()) {
     input_report.event_time = report.event_time();
   }
   auto input_touchscreen = std::make_unique<fuchsia::ui::input::TouchscreenReport>();
   if (report.touch().has_contacts()) {
     for (const fuchsia::input::report::ContactInputReport& contact : report.touch().contacts()) {
       fuchsia::ui::input::Touch input_touch;
       if (contact.has_contact_id()) {
         input_touch.finger_id = contact.contact_id();
       }
       if (contact.has_position_x()) {
         input_touch.x = static_cast<int32_t>(contact.position_x());
       }
       if (contact.has_position_y()) {
         input_touch.y = static_cast<int32_t>(contact.position_y());
       }
       input_touchscreen->touches.push_back(std::move(input_touch));
     }
   }
   input_report.touchscreen = std::move(input_touchscreen);
   DispatchReport(touch_ptr_, std::move(input_report));
 }

 void InputInterpreter::DispatchMouseReport(const fuchsia::input::report::InputReport& report) {
   fuchsia::ui::input::InputReport input_report;
   if (report.has_event_time()) {
     input_report.event_time = report.event_time();
   }
   auto input_mouse = std::make_unique<fuchsia::ui::input::MouseReport>();
   if (report.mouse().has_movement_x()) {
     input_mouse->rel_x = static_cast<uint32_t>(report.mouse().movement_x());
   }
   if (report.mouse().has_movement_y()) {
     input_mouse->rel_y = static_cast<uint32_t>(report.mouse().movement_y());
   }
   if (report.mouse().has_pressed_buttons()) {
     for (uint8_t button : report.mouse().pressed_buttons()) {
       input_mouse->pressed_buttons = SetMouseButton(input_mouse->pressed_buttons, button);
     }
   }
   input_report.mouse = std::move(input_mouse);
   DispatchReport(mouse_ptr_, std::move(input_report));
 }

 void InputInterpreter::DispatchConsumerControlReport(
     const fuchsia::input::report::InputReport& report) {
   fuchsia::ui::input::InputReport input_report;
   if (report.has_event_time()) {
     input_report.event_time = report.event_time();
   }
   auto media_buttons = std::make_unique<fuchsia::ui::input::MediaButtonsReport>();
   if (report.consumer_control().has_pressed_buttons()) {
     for (const fuchsia::input::report::ConsumerControlButton& button :
          report.consumer_control().pressed_buttons()) {
       switch (button) {
         case fuchsia::input::report::ConsumerControlButton::VOLUME_UP:
           media_buttons->volume_up = true;
           break;
         case fuchsia::input::report::ConsumerControlButton::VOLUME_DOWN:
           media_buttons->volume_down = true;
           break;
         case fuchsia::input::report::ConsumerControlButton::MIC_MUTE:
           media_buttons->mic_mute = true;
           break;
         case fuchsia::input::report::ConsumerControlButton::PAUSE:
           media_buttons->pause = true;
           break;
         case fuchsia::input::report::ConsumerControlButton::REBOOT:
           media_buttons->reset = true;
           break;
         case fuchsia::input::report::ConsumerControlButton::CAMERA_DISABLE:
           media_buttons->camera_disable = true;
           break;
         default:
           break;
       }
     }
   }
   input_report.media_buttons = std::move(media_buttons);
   DispatchReport(consumer_control_ptr_, std::move(input_report));
 }

 void InputInterpreter::ReadReports(
     fuchsia::input::report::InputReportsReader_ReadInputReports_Result result) {
   TRACE_DURATION("input", "input_report_reader Read");

   if (result.is_err()) {
     FX_LOGS(INFO) << "InputInterpreter: ReadInputReports received status code: " << result.err();
     base_->RemoveDevice(this);
     return;
   }

   if (base_->ActiveInput()) {
     for (const auto& report : result.response().reports) {
       if (report.has_trace_id()) {
         TRACE_FLOW_END("input", "input_report", report.trace_id());
       }
       if (report.has_touch()) {
         DispatchTouchReport(report);
       }
       if (report.has_consumer_control()) {
         DispatchConsumerControlReport(report);
       }
       if (report.has_mouse()) {
         DispatchMouseReport(report);
       }
     }
   }

   // Queue ourselves up again for another read.
   reader_->ReadInputReports([this](auto result) { ReadReports(std::move(result)); });
 }

 }  // namespace ui_input
	// Copyright 2020 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_report_reader/input_interpreter.h"

	#include <fuchsia/ui/input/cpp/fidl.h>
	#include <lib/fidl/cpp/clone.h>
	#include <lib/syslog/cpp/macros.h>
	#include <lib/trace/event.h>
	#include <sys/types.h>
	#include <sys/uio.h>
	#include <zircon/errors.h>
	#include <zircon/types.h>

	namespace ui_input {

	namespace {

	fuchsia::ui::input::Axis ConvertAxis(fuchsia::input::report::Axis axis) {
	fuchsia::ui::input::Axis a = {};
	a.range.min = static_cast<int32_t>(axis.range.min);
	a.range.max = static_cast<int32_t>(axis.range.max);
	return a;
	}

	// Sets the fuchsia::ui::input Mouse button bit vector.
	// prev_buttons represents the current button bit vector.
	// button_id is the new button to set.
	// The function returns the new button bit vector.
	uint32_t SetMouseButton(uint32_t prev_buttons, uint8_t button_id) {
	if (button_id == 0 \|\| button_id > 32) {
	return prev_buttons;
	}
	return prev_buttons \| (1 << (button_id - 1));
	}

	} // namespace

	InputInterpreter::InputInterpreter(InputReaderBase* base,
	fuchsia::ui::input::InputDeviceRegistry* registry,
	std::string name)
	: base_(base), registry_(registry), name_(name) {}

	InputInterpreter::~InputInterpreter() {}

	void InputInterpreter::DispatchReport(const fuchsia::ui::input::InputDevicePtr& device,
	fuchsia::ui::input::InputReport report) {
	report.trace_id = TRACE_NONCE();
	TRACE_FLOW_BEGIN("input", "hid_read_to_listener", report.trace_id);
	device->DispatchReport(std::move(report));
	}

	std::unique_ptr<InputInterpreter> InputInterpreter::Create(
	InputReaderBase* base, zx::channel channel, fuchsia::ui::input::InputDeviceRegistry* registry,
	std::string name) {
	// Using `new` to access a non-public constructor.
	auto interpreter = std::unique_ptr<InputInterpreter>(new InputInterpreter(base, registry, name));
	zx_status_t status = interpreter->device_.Bind(std::move(channel));
	if (status != ZX_OK) {
	FX_LOGS(ERROR) << "InputInterpreter::Create: Bind error: " << status;
	return nullptr;
	}
	interpreter->Initialize();
	return interpreter;
	}

	void InputInterpreter::Initialize() {
	device_.set_error_handler([this](zx_status_t status) {
	if (status != ZX_ERR_PEER_CLOSED) {
	FX_LOGS(ERROR) << "InputInterpreter: Device error: " << status;
	}
	base_->RemoveDevice(this);
	});

	RegisterDevices();
	}

	void InputInterpreter::RegisterConsumerControl(
	const fuchsia::input::report::DeviceDescriptor& descriptor) {
	fuchsia::ui::input::DeviceDescriptor ui_descriptor;

	if (descriptor.has_device_info()) {
	auto info = std::make_unique<fuchsia::ui::input::DeviceInfo>();
	info->vendor_id = descriptor.device_info().vendor_id;
	info->product_id = descriptor.device_info().product_id;
	info->version = descriptor.device_info().version;
	ui_descriptor.device_info = std::move(info);
	}

	auto media_buttons = std::make_unique<fuchsia::ui::input::MediaButtonsDescriptor>();
	if (descriptor.consumer_control().input().has_buttons()) {
	for (auto button : descriptor.consumer_control().input().buttons()) {
	switch (button) {
	case fuchsia::input::report::ConsumerControlButton::VOLUME_UP:
	media_buttons->buttons \|= fuchsia::ui::input::kVolumeUp;
	break;
	case fuchsia::input::report::ConsumerControlButton::VOLUME_DOWN:
	media_buttons->buttons \|= fuchsia::ui::input::kVolumeDown;
	break;
	case fuchsia::input::report::ConsumerControlButton::MIC_MUTE:
	media_buttons->buttons \|= fuchsia::ui::input::kMicMute;
	break;
	case fuchsia::input::report::ConsumerControlButton::PAUSE:
	media_buttons->buttons \|= fuchsia::ui::input::kPause;
	break;
	case fuchsia::input::report::ConsumerControlButton::REBOOT:
	media_buttons->buttons \|= fuchsia::ui::input::kReset;
	break;
	case fuchsia::input::report::ConsumerControlButton::CAMERA_DISABLE:
	media_buttons->buttons \|= fuchsia::ui::input::kCameraDisable;
	break;
	default:
	break;
	}
	}
	}
	ui_descriptor.media_buttons = std::move(media_buttons);
	registry_->RegisterDevice(std::move(ui_descriptor), consumer_control_ptr_.NewRequest());
	}

	void InputInterpreter::RegisterMouse(const fuchsia::input::report::DeviceDescriptor& descriptor) {
	fuchsia::ui::input::DeviceDescriptor ui_descriptor;

	if (descriptor.has_device_info()) {
	auto info = std::make_unique<fuchsia::ui::input::DeviceInfo>();
	info->vendor_id = descriptor.device_info().vendor_id;
	info->product_id = descriptor.device_info().product_id;
	info->version = descriptor.device_info().version;
	ui_descriptor.device_info = std::move(info);
	}

	auto mouse = std::make_unique<fuchsia::ui::input::MouseDescriptor>();
	if (descriptor.mouse().input().has_movement_x()) {
	mouse->rel_x = ConvertAxis(descriptor.mouse().input().movement_x());
	}
	if (descriptor.mouse().input().has_movement_y()) {
	mouse->rel_y = ConvertAxis(descriptor.mouse().input().movement_y());
	}
	if (descriptor.mouse().input().has_buttons()) {
	for (uint8_t button : descriptor.mouse().input().buttons()) {
	mouse->buttons = SetMouseButton(mouse->buttons, button);
	}
	}
	ui_descriptor.mouse = std::move(mouse);
	registry_->RegisterDevice(std::move(ui_descriptor), mouse_ptr_.NewRequest());
	}

	void InputInterpreter::RegisterTouchscreen(
	const fuchsia::input::report::DeviceDescriptor& descriptor) {
	fuchsia::ui::input::DeviceDescriptor ui_descriptor;

	if (descriptor.has_device_info()) {
	auto info = std::make_unique<fuchsia::ui::input::DeviceInfo>();
	info->vendor_id = descriptor.device_info().vendor_id;
	info->product_id = descriptor.device_info().product_id;
	info->version = descriptor.device_info().version;
	ui_descriptor.device_info = std::move(info);
	}

	auto touch = std::make_unique<fuchsia::ui::input::TouchscreenDescriptor>();
	if (descriptor.touch().input().has_contacts()) {
	if (descriptor.touch().input().contacts()[0].has_position_x()) {
	touch->x.range.min =
	static_cast<int32_t>(descriptor.touch().input().contacts()[0].position_x().range.min);
	touch->x.range.max =
	static_cast<int32_t>(descriptor.touch().input().contacts()[0].position_x().range.max);
	}
	if (descriptor.touch().input().contacts()[0].has_position_y()) {
	touch->y.range.min =
	static_cast<int32_t>(descriptor.touch().input().contacts()[0].position_y().range.min);
	touch->y.range.max =
	static_cast<int32_t>(descriptor.touch().input().contacts()[0].position_y().range.max);
	}
	}
	if (descriptor.touch().input().has_max_contacts()) {
	touch->max_finger_id = descriptor.touch().input().max_contacts();
	}
	ui_descriptor.touchscreen = std::move(touch);
	registry_->RegisterDevice(std::move(ui_descriptor), touch_ptr_.NewRequest());
	}

	void InputInterpreter::RegisterDevices() {
	fuchsia::input::report::DeviceDescriptor descriptor;
	device_->GetDescriptor([this](fuchsia::input::report::DeviceDescriptor descriptor) {
	if (descriptor.has_touch() && descriptor.touch().has_input()) {
	if (descriptor.touch().input().has_touch_type() &&
	(descriptor.touch().input().touch_type() ==
	fuchsia::input::report::TouchType::TOUCHSCREEN)) {
	RegisterTouchscreen(descriptor);
	}
	}

	if (descriptor.has_mouse() && descriptor.mouse().has_input()) {
	RegisterMouse(descriptor);
	}

	if (descriptor.has_consumer_control() && descriptor.consumer_control().has_input()) {
	RegisterConsumerControl(descriptor);
	}

	// Now that devices are registered we can start reading requests.
	device_->GetInputReportsReader(reader_.NewRequest());
	reader_.set_error_handler([this](zx_status_t status) {
	if (status != ZX_ERR_PEER_CLOSED) {
	FX_LOGS(ERROR) << "InputInterpreter: Reader error: " << status;
	}
	base_->RemoveDevice(this);
	});

	// Kick off the first Read, which will queue up the rest of the reads.
	reader_->ReadInputReports([this](auto result) { ReadReports(std::move(result)); });
	});
	}

	void InputInterpreter::DispatchTouchReport(const fuchsia::input::report::InputReport& report) {
	fuchsia::ui::input::InputReport input_report;
	if (report.has_event_time()) {
	input_report.event_time = report.event_time();
	}
	auto input_touchscreen = std::make_unique<fuchsia::ui::input::TouchscreenReport>();
	if (report.touch().has_contacts()) {
	for (const fuchsia::input::report::ContactInputReport& contact : report.touch().contacts()) {
	fuchsia::ui::input::Touch input_touch;
	if (contact.has_contact_id()) {
	input_touch.finger_id = contact.contact_id();
	}
	if (contact.has_position_x()) {
	input_touch.x = static_cast<int32_t>(contact.position_x());
	}
	if (contact.has_position_y()) {
	input_touch.y = static_cast<int32_t>(contact.position_y());
	}
	input_touchscreen->touches.push_back(std::move(input_touch));
	}
	}
	input_report.touchscreen = std::move(input_touchscreen);
	DispatchReport(touch_ptr_, std::move(input_report));
	}

	void InputInterpreter::DispatchMouseReport(const fuchsia::input::report::InputReport& report) {
	fuchsia::ui::input::InputReport input_report;
	if (report.has_event_time()) {
	input_report.event_time = report.event_time();
	}
	auto input_mouse = std::make_unique<fuchsia::ui::input::MouseReport>();
	if (report.mouse().has_movement_x()) {
	input_mouse->rel_x = static_cast<uint32_t>(report.mouse().movement_x());
	}
	if (report.mouse().has_movement_y()) {
	input_mouse->rel_y = static_cast<uint32_t>(report.mouse().movement_y());
	}
	if (report.mouse().has_pressed_buttons()) {
	for (uint8_t button : report.mouse().pressed_buttons()) {
	input_mouse->pressed_buttons = SetMouseButton(input_mouse->pressed_buttons, button);
	}
	}
	input_report.mouse = std::move(input_mouse);
	DispatchReport(mouse_ptr_, std::move(input_report));
	}

	void InputInterpreter::DispatchConsumerControlReport(
	const fuchsia::input::report::InputReport& report) {
	fuchsia::ui::input::InputReport input_report;
	if (report.has_event_time()) {
	input_report.event_time = report.event_time();
	}
	auto media_buttons = std::make_unique<fuchsia::ui::input::MediaButtonsReport>();
	if (report.consumer_control().has_pressed_buttons()) {
	for (const fuchsia::input::report::ConsumerControlButton& button :
	report.consumer_control().pressed_buttons()) {
	switch (button) {
	case fuchsia::input::report::ConsumerControlButton::VOLUME_UP:
	media_buttons->volume_up = true;
	break;
	case fuchsia::input::report::ConsumerControlButton::VOLUME_DOWN:
	media_buttons->volume_down = true;
	break;
	case fuchsia::input::report::ConsumerControlButton::MIC_MUTE:
	media_buttons->mic_mute = true;
	break;
	case fuchsia::input::report::ConsumerControlButton::PAUSE:
	media_buttons->pause = true;
	break;
	case fuchsia::input::report::ConsumerControlButton::REBOOT:
	media_buttons->reset = true;
	break;
	case fuchsia::input::report::ConsumerControlButton::CAMERA_DISABLE:
	media_buttons->camera_disable = true;
	break;
	default:
	break;
	}
	}
	}
	input_report.media_buttons = std::move(media_buttons);
	DispatchReport(consumer_control_ptr_, std::move(input_report));
	}

	void InputInterpreter::ReadReports(
	fuchsia::input::report::InputReportsReader_ReadInputReports_Result result) {
	TRACE_DURATION("input", "input_report_reader Read");

	if (result.is_err()) {
	FX_LOGS(INFO) << "InputInterpreter: ReadInputReports received status code: " << result.err();
	base_->RemoveDevice(this);
	return;
	}

	if (base_->ActiveInput()) {
	for (const auto& report : result.response().reports) {
	if (report.has_trace_id()) {
	TRACE_FLOW_END("input", "input_report", report.trace_id());
	}
	if (report.has_touch()) {
	DispatchTouchReport(report);
	}
	if (report.has_consumer_control()) {
	DispatchConsumerControlReport(report);
	}
	if (report.has_mouse()) {
	DispatchMouseReport(report);
	}
	}
	}

	// Queue ourselves up again for another read.
	reader_->ReadInputReports([this](auto result) { ReadReports(std::move(result)); });
	}

	} // namespace ui_input