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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: 23 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_COMPRESSOR_H_
#define LSP_PLUG_IN_FMT_OBJ_COMPRESSOR_H_
#include <lsp-plug.in/runtime/version.h>
#include <lsp-plug.in/io/File.h>
#include <lsp-plug.in/io/IOutStream.h>
#include <lsp-plug.in/io/OutBitStream.h>
#include <lsp-plug.in/fmt/obj/const.h>
#include <lsp-plug.in/fmt/obj/IObjHandler.h>
namespace lsp
{
namespace obj
{
/**
* OBJ format compressor
*/
class Compressor: public IObjHandler
{
protected:
io::OutBitStream *pOut;
union
{
float *vFloatBuf;
uint32_t *vIntBuf;
};
uint32_t nFloatHead;
uint32_t nFloatSize;
uint32_t nFloatCap;
uint32_t nFloatBits;
uint32_t nLastEvent;
size_t nWFlags;
protected:
status_t do_wrap(io::OutBitStream * & obs, size_t flags = WRAP_CLOSE | WRAP_DELETE);
status_t write_varint(size_t value);
status_t write_varint_icount(size_t value);
status_t write_float(float value);
inline status_t write_indices(const index_t *value, size_t count);
inline status_t write_event(uint32_t event);
inline status_t write_utf8(const char *text);
static bool has_nonempty_index(const index_t *v, size_t count);
static bool has_equal_indices(const index_t *v, size_t count);
public:
Compressor();
Compressor(const Compressor &) = delete;
Compressor(Compressor &&) = delete;
virtual ~Compressor() override;
Compressor & operator = (const Compressor &) = delete;
Compressor & operator = (Compressor &&) = delete;
public:
status_t open(const char *path, size_t mode);
status_t open(const LSPString *path, size_t mode);
status_t open(const io::Path *path, size_t mode);
status_t wrap(FILE *fd, bool close);
status_t wrap_native(fhandle_t fd, bool close);
status_t wrap(io::File *fd, size_t flags = 0);
status_t wrap(io::IOutStream *os, size_t flags = 0);
status_t wrap(io::OutBitStream *obs, size_t flags = 0);
status_t close();
public:
/**
* Set buffer size
* @param float_bits
* @return status of operation
*/
status_t set_buffer_size(size_t float_bits);
public:
virtual status_t begin_object(const char *name) override;
virtual status_t begin_object(const LSPString *name) override;
virtual status_t end_object() override;
virtual status_t end_of_data() override;
virtual ssize_t add_vertex(float x, float y, float z, float w) override;
virtual ssize_t add_param_vertex(float x, float y, float z, float w) override;
virtual ssize_t add_normal(float nx, float ny, float nz, float nw) override;
virtual ssize_t add_texture_vertex(float u, float v, float w) override;
virtual ssize_t add_face(const index_t *vv, const index_t *vn, const index_t *vt, size_t n) override;
virtual ssize_t add_points(const index_t *vv, size_t n) override;
virtual ssize_t add_line(const index_t *vv, const index_t *vt, size_t n) override;
};
} /* namespace obj */
} /* namespace lsp */
#endif /* LSP_PL;UG_IN_FMT_OBJ_COMPRESSOR_H_ */
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