99 lines
3.0 KiB
C++
99 lines
3.0 KiB
C++
/*
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "chre/util/pigweed/chre_channel_output.h"
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#include "chre/util/memory.h"
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#include "chre/util/nanoapp/callbacks.h"
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namespace chre {
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namespace {
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void nappMessageFreeCb(uint16_t /* eventType */, void *eventData) {
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chreHeapFree(eventData);
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}
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} // namespace
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ChreChannelOutputBase::ChreChannelOutputBase() : ChannelOutput("CHRE") {}
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void ChreChannelOutputBase::setEndpointId(uint16_t endpointId) {
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mEndpointId = endpointId;
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}
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size_t ChreChannelOutputBase::MaximumTransmissionUnit() {
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return CHRE_MESSAGE_TO_HOST_MAX_SIZE;
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}
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void ChreNanoappChannelOutput::setNanoappEndpoint(uint32_t nanoappInstanceId) {
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CHRE_ASSERT(nanoappInstanceId <= UINT16_MAX);
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if (nanoappInstanceId <= UINT16_MAX) {
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mEndpointId = static_cast<uint16_t>(nanoappInstanceId);
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} else {
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mEndpointId = CHRE_HOST_ENDPOINT_UNSPECIFIED;
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}
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}
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pw::Status ChreNanoappChannelOutput::Send(std::span<const std::byte> buffer) {
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CHRE_ASSERT(mEndpointId != CHRE_HOST_ENDPOINT_UNSPECIFIED);
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pw::Status returnCode = PW_STATUS_OK;
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if (buffer.size() > 0) {
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auto *data = static_cast<ChrePigweedNanoappMessage *>(
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chreHeapAlloc(buffer.size() + sizeof(ChrePigweedNanoappMessage)));
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if (data == nullptr) {
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returnCode = PW_STATUS_RESOURCE_EXHAUSTED;
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} else {
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data->msgSize = buffer.size();
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memcpy(data->msg, buffer.data(), buffer.size());
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if (!chreSendEvent(PW_RPC_CHRE_NAPP_EVENT_TYPE, data, nappMessageFreeCb,
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mEndpointId)) {
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returnCode = PW_STATUS_INVALID_ARGUMENT;
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}
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}
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}
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return returnCode;
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}
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void ChreHostChannelOutput::setHostEndpoint(uint16_t hostEndpoint) {
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setEndpointId(hostEndpoint);
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}
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pw::Status ChreHostChannelOutput::Send(std::span<const std::byte> buffer) {
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CHRE_ASSERT(mEndpointId != CHRE_HOST_ENDPOINT_UNSPECIFIED);
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pw::Status returnCode = PW_STATUS_OK;
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if (buffer.size() > 0) {
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uint8_t *data = memoryAlloc<uint8_t>(buffer.size());
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if (data == nullptr) {
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returnCode = PW_STATUS_RESOURCE_EXHAUSTED;
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} else {
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memcpy(data, buffer.data(), buffer.size());
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// TODO(b/210138227): Make this pass permissions too.
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if (!chreSendMessageWithPermissions(
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data, buffer.size(), PW_RPC_CHRE_HOST_MESSAGE_TYPE, mEndpointId,
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CHRE_MESSAGE_PERMISSION_NONE, heapFreeMessageCallback)) {
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returnCode = PW_STATUS_INVALID_ARGUMENT;
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}
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}
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}
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return returnCode;
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}
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} // namespace chre
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