// Copyright 2020 The Dawn Authors
//
// 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 "dawn_wire/ChunkedCommandSerializer.h"

namespace dawn_wire {

    ChunkedCommandSerializer::ChunkedCommandSerializer(CommandSerializer* serializer)
        : mSerializer(serializer), mMaxAllocationSize(serializer->GetMaximumAllocationSize()) {
    }

    void ChunkedCommandSerializer::SerializeChunkedCommand(const char* allocatedBuffer,
                                                           size_t remainingSize) {
        while (remainingSize > 0) {
            size_t chunkSize = std::min(remainingSize, mMaxAllocationSize);
            void* dst = mSerializer->GetCmdSpace(chunkSize);
            if (dst == nullptr) {
                return;
            }
            memcpy(dst, allocatedBuffer, chunkSize);

            allocatedBuffer += chunkSize;
            remainingSize -= chunkSize;
        }
    }

}  // namespace dawn_wire