/*
 * Copyright (C) 2020 Linux Studio Plugins Project <https://lsp-plug.in/>
 *           (C) 2020 Vladimir Sadovnikov <sadko4u@gmail.com>
 *
 * This file is part of lsp-test-fw
 * Created on: 23 авг. 2018 г.
 *
 * lsp-test-fw is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * any later version.
 *
 * lsp-test-fw is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with lsp-test-fw. If not, see <https://www.gnu.org/licenses/>.
 */

#ifndef LSP_PLUG_IN_TEST_FW_BYTEBUFFER_H_
#define LSP_PLUG_IN_TEST_FW_BYTEBUFFER_H_

#include <lsp-plug.in/test-fw/version.h>
#include <lsp-plug.in/test-fw/types.h>

#include <stdint.h>
#include <stdio.h>

namespace lsp
{
    namespace test
    {
        /**
         * Represents a byte buffer with specific memory alignment
         * and constant boundary markers that helps to detect buffer
         * overruns/underruns
         */
        class LSP_TEST_FW_PUBLIC ByteBuffer
        {
            private:
                uint8_t    *pBuffer;
                uint8_t    *pData;
                size_t      nLength;
                size_t      nAlign;
                bool        bAligned;

            private:
                void allocate(size_t bytes, size_t align, bool aligned);

            public:
                explicit ByteBuffer(size_t bytes, size_t align = LSP_TEST_FW_DEFAULT_ALIGN, bool aligned = true);
                explicit ByteBuffer(const ByteBuffer &src);
                explicit ByteBuffer(const void *data, size_t bytes, size_t align = LSP_TEST_FW_DEFAULT_ALIGN, bool aligned = true);
                ~ByteBuffer();

            public:
                void randomize();
                void fill_zero();

                bool validate() const;
                bool equals(const ByteBuffer &src) const;
                bool equals(const void *src, size_t count) const;
                bool equals(const void *src, size_t offset, size_t count) const;

                void dump(FILE *out, const char *text) const;
                void dump(FILE *out, const char *text, size_t from, size_t count) const;
                inline void dump(const char *text) const { dump(stdout, text); }
                inline void dump(const char *text, size_t from, size_t count) const { dump(stdout, text, from, count); }

                inline bool aligned() const     { return bAligned; }
                inline bool valid() const       { return validate(); };
                inline bool corrupted() const   { return !validate(); };

                inline size_t size() const { return nLength; }

            public:
                inline uint8_t &operator [] (size_t index) {
                    return pBuffer[index];
                }

                inline uint8_t operator [] (size_t index) const {
                    return pBuffer[index];
                }

                template <typename T>
                    inline T *data(size_t off = 0)
                    {
                        return reinterpret_cast<T *>(&pBuffer[off]);
                    }

                inline uint8_t *data(size_t off = 0)
                {
                    return &pBuffer[off];
                }

                inline operator uint8_t *()
                {
                    return pBuffer;
                }

                inline operator void *()
                {
                    return pBuffer;
                }

                inline operator const uint8_t *() const
                {
                    return pBuffer;
                }

        };
    }
}

#endif /* LSP_PLUG_IN_TEST_FW_BYTEBUFFER_H_ */
