src/include/dawn_wire/Wire.h

// Copyright 2017 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.

#ifndef DAWNWIRE_WIRE_H_
#define DAWNWIRE_WIRE_H_

#include <cstdint>
#include <limits>

#include "dawn/webgpu.h"
#include "dawn_wire/dawn_wire_export.h"

namespace dawn_wire {

    class DAWN_WIRE_EXPORT CommandSerializer {
      public:
        CommandSerializer();
        virtual ~CommandSerializer();
        CommandSerializer(const CommandSerializer& rhs) = delete;
        CommandSerializer& operator=(const CommandSerializer& rhs) = delete;

        // Get space for serializing commands.
        // GetCmdSpace will never be called with a value larger than
        // what GetMaximumAllocationSize returns. Return nullptr to indicate
        // a fatal error.
        virtual void* GetCmdSpace(size_t size) = 0;
        virtual bool Flush() = 0;
        virtual size_t GetMaximumAllocationSize() const = 0;
        virtual void OnSerializeError();
    };

    class DAWN_WIRE_EXPORT CommandHandler {
      public:
        CommandHandler();
        virtual ~CommandHandler();
        CommandHandler(const CommandHandler& rhs) = delete;
        CommandHandler& operator=(const CommandHandler& rhs) = delete;

        virtual const volatile char* HandleCommands(const volatile char* commands, size_t size) = 0;
    };

    DAWN_WIRE_EXPORT size_t
    SerializedWGPUDevicePropertiesSize(const WGPUDeviceProperties* deviceProperties);

    DAWN_WIRE_EXPORT void SerializeWGPUDeviceProperties(
        const WGPUDeviceProperties* deviceProperties,
        char* serializeBuffer);

    DAWN_WIRE_EXPORT bool DeserializeWGPUDeviceProperties(WGPUDeviceProperties* deviceProperties,
                                                          const volatile char* deserializeBuffer,
                                                          size_t deserializeBufferSize);

}  // namespace dawn_wire

#endif  // DAWNWIRE_WIRE_H_