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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/webusb/usb_endpoint.h"
#include "services/device/public/mojom/usb_device.mojom-blink.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_usb_direction.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_usb_endpoint_type.h"
#include "third_party/blink/renderer/core/dom/dom_exception.h"
#include "third_party/blink/renderer/modules/webusb/usb_alternate_interface.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
using device::mojom::blink::UsbTransferType;
using device::mojom::blink::UsbTransferDirection;
namespace blink {
namespace {
V8USBDirection::Enum ConvertDirectionToEnum(
const UsbTransferDirection& direction) {
switch (direction) {
case UsbTransferDirection::INBOUND:
return V8USBDirection::Enum::kIn;
case UsbTransferDirection::OUTBOUND:
return V8USBDirection::Enum::kOut;
}
NOTREACHED();
}
V8USBEndpointType::Enum ConvertTypeToEnum(const UsbTransferType& type) {
switch (type) {
case UsbTransferType::BULK:
return V8USBEndpointType::Enum::kBulk;
case UsbTransferType::INTERRUPT:
return V8USBEndpointType::Enum::kInterrupt;
case UsbTransferType::ISOCHRONOUS:
return V8USBEndpointType::Enum::kIsochronous;
case UsbTransferType::CONTROL:
// Should not happen.
break;
}
NOTREACHED();
}
} // namespace
USBEndpoint* USBEndpoint::Create(const USBAlternateInterface* alternate,
wtf_size_t endpoint_index) {
return MakeGarbageCollected<USBEndpoint>(alternate, endpoint_index);
}
USBEndpoint* USBEndpoint::Create(const USBAlternateInterface* alternate,
uint8_t endpoint_number,
const V8USBDirection& direction,
ExceptionState& exception_state) {
UsbTransferDirection mojo_direction = direction == V8USBDirection::Enum::kIn
? UsbTransferDirection::INBOUND
: UsbTransferDirection::OUTBOUND;
const auto& endpoints = alternate->Info().endpoints;
for (wtf_size_t i = 0; i < endpoints.size(); ++i) {
const auto& endpoint = endpoints[i];
if (endpoint->endpoint_number == endpoint_number &&
endpoint->direction == mojo_direction)
return USBEndpoint::Create(alternate, i);
}
exception_state.ThrowRangeError(
"No such endpoint exists in the given alternate interface.");
return nullptr;
}
USBEndpoint::USBEndpoint(const USBAlternateInterface* alternate,
wtf_size_t endpoint_index)
: alternate_(alternate), endpoint_index_(endpoint_index) {
DCHECK(alternate_);
DCHECK_LT(endpoint_index_, alternate_->Info().endpoints.size());
}
const device::mojom::blink::UsbEndpointInfo& USBEndpoint::Info() const {
const device::mojom::blink::UsbAlternateInterfaceInfo& alternate_info =
alternate_->Info();
DCHECK_LT(endpoint_index_, alternate_info.endpoints.size());
return *alternate_info.endpoints[endpoint_index_];
}
V8USBDirection USBEndpoint::direction() const {
return V8USBDirection(ConvertDirectionToEnum(Info().direction));
}
V8USBEndpointType USBEndpoint::type() const {
return V8USBEndpointType(ConvertTypeToEnum(Info().type));
}
void USBEndpoint::Trace(Visitor* visitor) const {
visitor->Trace(alternate_);
ScriptWrappable::Trace(visitor);
}
} // namespace blink
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