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// Copyright 2019 The Cobalt Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "cobalt/h5vcc/h5vcc_platform_service.h"
#include "cobalt/base/polymorphic_downcast.h"
#include "cobalt/dom/dom_settings.h"
#include "starboard/common/string.h"
#include "starboard/configuration.h"
namespace cobalt {
namespace h5vcc {
// static
scoped_refptr<H5vccPlatformService> H5vccPlatformService::Open(
script::EnvironmentSettings* settings, const std::string service_name,
const ReceiveCallbackArg& receive_callback) {
#if SB_API_VERSION < 11
SB_DLOG(WARNING)
<< "PlatformService not implemented in this version of Starboard.";
return NULL;
#else // SB_API_VERSION < 11
DCHECK(settings);
dom::DOMSettings* dom_settings =
base::polymorphic_downcast<dom::DOMSettings*>(settings);
auto* global_environment = dom_settings->global_environment();
DCHECK(global_environment);
const ExtPlatformServiceApi* platform_service_api =
static_cast<const ExtPlatformServiceApi*>(
SbSystemGetExtension(kCobaltExtensionPlatformServiceName));
if (!platform_service_api) {
SB_DLOG(WARNING) << "PlatformService is not implemented on this platform.";
return NULL;
}
scoped_refptr<H5vccPlatformService> service = new H5vccPlatformService(
global_environment, platform_service_api, receive_callback);
char* service_name_c_str = new char[kMaxNameLength];
SbStringCopy(service_name_c_str, service_name.c_str(), kMaxNameLength);
ExtPlatformService platform_service = platform_service_api->Open(
service, service_name_c_str, &H5vccPlatformService::Receive);
if (!platform_service) {
return NULL;
}
service->ext_service_ = platform_service;
return service;
#endif // SB_API_VERSION < 11
}
H5vccPlatformService::H5vccPlatformService(
script::GlobalEnvironment* environment,
const ExtPlatformServiceApi* platform_service_api,
const ReceiveCallbackArg& receive_callback)
: environment_(environment),
platform_service_api_(platform_service_api),
receive_callback_(this, receive_callback),
main_message_loop_(base::MessageLoop::current()->task_runner()),
ALLOW_THIS_IN_INITIALIZER_LIST(weak_ptr_factory_(this)),
ALLOW_THIS_IN_INITIALIZER_LIST(
weak_this_(weak_ptr_factory_.GetWeakPtr())) {
DCHECK(platform_service_api_);
DCHECK(main_message_loop_);
}
H5vccPlatformService::~H5vccPlatformService() {
if (IsOpen()) {
LOG(WARNING) << "Closing service due to destruction";
Close();
}
}
// static
bool H5vccPlatformService::Has(const std::string& service_name) {
#if SB_API_VERSION < 11
DLOG(WARNING)
<< "PlatformService not implemented in this version of Starboard.";
return false;
#else // SB_API_VERSION < 11
const ExtPlatformServiceApi* platform_service_api =
static_cast<const ExtPlatformServiceApi*>(
SbSystemGetExtension(kCobaltExtensionPlatformServiceName));
if (!platform_service_api) {
DLOG(WARNING) << "PlatformService is not implemented on this platform.";
return false;
}
return platform_service_api->Has(service_name.c_str());
#endif // SB_API_VERSION < 11
}
script::Handle<script::ArrayBuffer> H5vccPlatformService::Send(
const script::Handle<script::ArrayBuffer>& data,
script::ExceptionState* exception_state) {
if (!IsOpen()) {
dom::DOMException::Raise(dom::DOMException::kInvalidStateErr,
"Closed service should not Send.",
exception_state);
return script::ArrayBuffer::New(environment_, 0);
}
uint64_t output_length = 0;
bool invalid_state = 0;
void* output_data = platform_service_api_->Send(
ext_service_, data->Data(), data->ByteLength(), &output_length,
&invalid_state);
if (invalid_state) {
dom::DOMException::Raise(dom::DOMException::kInvalidStateErr,
"Service unable to accept data currently.",
exception_state);
SbMemoryDeallocate(output_data);
return script::ArrayBuffer::New(environment_, 0);
}
auto output_buffer =
script::ArrayBuffer::New(environment_, output_data, output_length);
// Deallocate |output_data| which has been copied into the ArrayBuffer.
SbMemoryDeallocate(output_data);
return output_buffer;
}
// static
void H5vccPlatformService::Receive(void* context, void* data, uint64_t length) {
DCHECK(context) << "Platform should not call Receive with NULL context";
static_cast<H5vccPlatformService*>(context)->ReceiveInternal(data, length);
}
void H5vccPlatformService::ReceiveInternal(void* data, uint64_t length) {
// ReceiveInternal may be called by another thread.
if (!main_message_loop_->BelongsToCurrentThread()) {
main_message_loop_->PostTask(
FROM_HERE, base::Bind(&H5vccPlatformService::ReceiveInternal,
weak_this_, data, length));
return;
}
DCHECK(main_message_loop_->BelongsToCurrentThread());
if (!IsOpen()) {
LOG(ERROR) << "Closed service cannot Receive.";
return;
}
script::Handle<script::ArrayBuffer> data_array_buffer;
if (length) {
data_array_buffer = script::ArrayBuffer::New(environment_, data, length);
} else {
data_array_buffer = script::ArrayBuffer::New(environment_, 0);
}
const scoped_refptr<H5vccPlatformService>& service(this);
receive_callback_.value().Run(service, data_array_buffer);
}
void H5vccPlatformService::Close() {
DCHECK(main_message_loop_->BelongsToCurrentThread());
if (!IsOpen()) {
LOG(ERROR) << "Cannot close service that is not open.";
return;
}
platform_service_api_->Close(ext_service_);
ext_service_ = kCobaltExtensionPlatformServiceInvalid;
}
bool H5vccPlatformService::IsOpen() {
return CobaltExtensionPlatformServiceIsValid(ext_service_);
}
} // namespace h5vcc
} // namespace cobalt