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/*
* Copyright (C) 2025 Linux Studio Plugins Project <https://lsp-plug.in/>
* (C) 2025 Vladimir Sadovnikov <sadko4u@gmail.com>
*
* This file is part of lsp-runtime-lib
* Created on: 26 июл. 2025 г.
*
* lsp-runtime-lib 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-runtime-lib 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-runtime-lib. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef LSP_PLUG_IN_FMT_OBJ_DECOMPRESSOR_H_
#define LSP_PLUG_IN_FMT_OBJ_DECOMPRESSOR_H_
#include <lsp-plug.in/runtime/version.h>
#include <lsp-plug.in/fmt/obj/const.h>
#include <lsp-plug.in/fmt/obj/PullParser.h>
#include <lsp-plug.in/fmt/obj/IObjHandler.h>
#include <lsp-plug.in/io/InBitStream.h>
namespace lsp
{
namespace obj
{
class Decompressor
{
protected:
io::InBitStream sStream;
union
{
float *vFloatBuf;
uint32_t *vIntBuf;
};
uint32_t nFloatHead;
uint32_t nFloatSize;
uint32_t nFloatCap;
uint32_t nFloatBits;
compressed_event_type_t nLastEvent;
protected:
status_t parse_data(IObjHandler *handler);
status_t parse_header();
void clear_state();
status_t read_event(compressed_event_type_t *event);
status_t parse_vertex(IObjHandler *handler, size_t coords);
status_t parse_pvertex(IObjHandler *handler, size_t coords);
status_t parse_normal(IObjHandler *handler, size_t coords);
status_t parse_texcoord(IObjHandler *handler, size_t coords);
status_t parse_face(IObjHandler *handler, bool texcoords, bool normals, bool fill);
status_t parse_line(IObjHandler *handler, bool texcoords);
status_t parse_points(IObjHandler *handler);
status_t parse_object(IObjHandler *handler);
status_t read_float(float *dst);
status_t read_varint(size_t *dst);
status_t read_varint_icount(size_t *dst);
status_t read_indices(index_t *dst, size_t count, bool read);
status_t read_utf8(LSPString *dst);
public:
explicit Decompressor();
Decompressor(const Decompressor &) = delete;
Decompressor(Decompressor &&) = delete;
virtual ~Decompressor();
Decompressor & operator = (const Decompressor &) = delete;
Decompressor & operator = (Decompressor &&) = delete;
public:
/**
* Parse compressed OBJ file
* @param handler Wavefront Object file handler
* @param path UTF-8 path to the file
* @param charset character set encoding of the file
* @return status of operation
*/
status_t parse_file(IObjHandler *handler, const char *path);
/**
* Parse compressed OBJ file
* @param handler Wavefront Object file handler
* @param path path to the file
* @param charset character set encoding of the file
* @return status of operation
*/
status_t parse_file(IObjHandler *handler, const LSPString *path);
/**
* Parse compressed OBJ file
* @param handler Wavefront Object file handler
* @param path path to the file
* @param charset character set encoding of the file
* @return status of operation
*/
status_t parse_file(IObjHandler *handler, const io::Path *path);
/**
* Parse compressed OBJ data from input stream
* @param handler Wavefront Object file handler
* @param is input stream
* @param flags wrap flags
* @param charset character set
* @return status of operation
*/
status_t parse_data(IObjHandler *handler, io::IInStream *is, size_t flags = WRAP_NONE);
/**
* Parse compressed OBJ data from memory
* @param handler Wavefront Object file handler
* @param data byte buffer
* @param size size of byte buffer
* @return status of operation
*/
status_t parse_data(IObjHandler *handler, const void *data, size_t size);
};
} /* namespace obj */
} /* namespace lsp */
#endif /* LSP_PLUG_IN_FMT_OBJ_DECOMPRESSOR_H_ */
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