#pragma once

#include "miniz_common.h"

#ifndef MINIZ_NO_DEFLATE_APIS

#ifdef __cplusplus

extern "C"

{

#endif /* __cplusplus */

#ifndef TDEFL_LESS_MEMORY

#define TDEFL_LESS_MEMORY 0

#endif /* TDEFL_LESS_MEMORY */

/* tdefl_init() compression flags logically OR'd together (low 12 bits contain the max. number of probes per dictionary search): */

/* TDEFL_DEFAULT_MAX_PROBES: The compressor defaults to 128 dictionary probes per dictionary search. 0=Huffman only, 1=Huffman+LZ (fastest/crap compression), 4095=Huffman+LZ (slowest/best compression). */

enum

{

TDEFL_HUFFMAN_ONLY = 0,

TDEFL_DEFAULT_MAX_PROBES = 128,

TDEFL_MAX_PROBES_MASK = 0xFFF

};

/* TDEFL_WRITE_ZLIB_HEADER: If set, the compressor outputs a zlib header before the deflate data, and the Adler-32 of the source data at the end. Otherwise, you'll get raw deflate data. */

/* TDEFL_COMPUTE_ADLER32: Always compute the adler-32 of the input data (even when not writing zlib headers). */

/* TDEFL_GREEDY_PARSING_FLAG: Set to use faster greedy parsing, instead of more efficient lazy parsing. */

/* TDEFL_NONDETERMINISTIC_PARSING_FLAG: Enable to decrease the compressor's initialization time to the minimum, but the output may vary from run to run given the same input (depending on the contents of memory). */

/* TDEFL_RLE_MATCHES: Only look for RLE matches (matches with a distance of 1) */

/* TDEFL_FILTER_MATCHES: Discards matches <= 5 chars if enabled. */

/* TDEFL_FORCE_ALL_STATIC_BLOCKS: Disable usage of optimized Huffman tables. */

/* TDEFL_FORCE_ALL_RAW_BLOCKS: Only use raw (uncompressed) deflate blocks. */

/* The low 12 bits are reserved to control the max # of hash probes per dictionary lookup (see TDEFL_MAX_PROBES_MASK). */

enum

{

TDEFL_WRITE_ZLIB_HEADER = 0x01000,

TDEFL_COMPUTE_ADLER32 = 0x02000,

TDEFL_GREEDY_PARSING_FLAG = 0x04000,

TDEFL_NONDETERMINISTIC_PARSING_FLAG = 0x08000,

TDEFL_RLE_MATCHES = 0x10000,

TDEFL_FILTER_MATCHES = 0x20000,

TDEFL_FORCE_ALL_STATIC_BLOCKS = 0x40000,

TDEFL_FORCE_ALL_RAW_BLOCKS = 0x80000

};

/* High level compression functions: */

/* tdefl_compress_mem_to_heap() compresses a block in memory to a heap block allocated via malloc(). */

/* On entry: */

/* pSrc_buf, src_buf_len: Pointer and size of source block to compress. */

/* flags: The max match finder probes (default is 128) logically OR'd against the above flags. Higher probes are slower but improve compression. */

/* On return: */

/* Function returns a pointer to the compressed data, or NULL on failure. */

/* *pOut_len will be set to the compressed data's size, which could be larger than src_buf_len on uncompressible data. */

/* The caller must free() the returned block when it's no longer needed. */

MINIZ_EXPORT void *tdefl_compress_mem_to_heap(const void *pSrc_buf, size_t src_buf_len, size_t *pOut_len, int flags);

/* tdefl_compress_mem_to_mem() compresses a block in memory to another block in memory. */

/* Returns 0 on failure. */

MINIZ_EXPORT size_t tdefl_compress_mem_to_mem(void *pOut_buf, size_t out_buf_len, const void *pSrc_buf, size_t src_buf_len, int flags);

/* Compresses an image to a compressed PNG file in memory. */

/* On entry: */

/* pImage, w, h, and num_chans describe the image to compress. num_chans may be 1, 2, 3, or 4. */

/* The image pitch in bytes per scanline will be w*num_chans. The leftmost pixel on the top scanline is stored first in memory. */

/* level may range from [0,10], use MZ_NO_COMPRESSION, MZ_BEST_SPEED, MZ_BEST_COMPRESSION, etc. or a decent default is MZ_DEFAULT_LEVEL */

/* If flip is true, the image will be flipped on the Y axis (useful for OpenGL apps). */

/* On return: */

/* Function returns a pointer to the compressed data, or NULL on failure. */

/* *pLen_out will be set to the size of the PNG image file. */

/* The caller must mz_free() the returned heap block (which will typically be larger than *pLen_out) when it's no longer needed. */

MINIZ_EXPORT void *tdefl_write_image_to_png_file_in_memory_ex(const void *pImage, int w, int h, int num_chans, size_t *pLen_out, mz_uint level, mz_bool flip);

MINIZ_EXPORT void *tdefl_write_image_to_png_file_in_memory(const void *pImage, int w, int h, int num_chans, size_t *pLen_out);

/* Like tdefl_write_image_to_png_file_in_memory_ex(), but can write an indexed (palette) PNG. */

/* If plte_size > 0, num_chans must be 1 and pImage holds palette indices. pPlte points to plte_size bytes of RGB triplets */

/* (plte_size must be a multiple of 3, at most 768). Optionally pTrns points to trns_size alpha values (one per palette entry, */

/* trns_size <= plte_size/3) written as a tRNS chunk. Pass NULL/0 for both to get the same output as _ex(). */

MINIZ_EXPORT void *tdefl_write_image_to_png_file_in_memory_ex2(const void *pImage, int w, int h, int num_chans, size_t *pLen_out, mz_uint level, mz_bool flip,

const mz_uint8 *pPlte, int plte_size, const mz_uint8 *pTrns, int trns_size);

/* Output stream interface. The compressor uses this interface to write compressed data. It'll typically be called TDEFL_OUT_BUF_SIZE at a time. */

typedef mz_bool (*tdefl_put_buf_func_ptr)(const void *pBuf, int len, void *pUser);

/* tdefl_compress_mem_to_output() compresses a block to an output stream. The above helpers use this function internally. */

MINIZ_EXPORT mz_bool tdefl_compress_mem_to_output(const void *pBuf, size_t buf_len, tdefl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags);

enum

{

TDEFL_MAX_HUFF_TABLES = 3,

TDEFL_MAX_HUFF_SYMBOLS_0 = 288,

TDEFL_MAX_HUFF_SYMBOLS_1 = 32,

TDEFL_MAX_HUFF_SYMBOLS_2 = 19,

TDEFL_LZ_DICT_SIZE = 32768,

TDEFL_LZ_DICT_SIZE_MASK = TDEFL_LZ_DICT_SIZE - 1,

TDEFL_MIN_MATCH_LEN = 3,

TDEFL_MAX_MATCH_LEN = 258

};

#if TDEFL_LESS_MEMORY

enum

{

TDEFL_LZ_CODE_BUF_SIZE = 24 * 1024,

TDEFL_OUT_BUF_SIZE = (TDEFL_LZ_CODE_BUF_SIZE * 13) / 10,

TDEFL_MAX_HUFF_SYMBOLS = 288,

TDEFL_LZ_HASH_BITS = 12,

TDEFL_LEVEL1_HASH_SIZE_MASK = 4095,

TDEFL_LZ_HASH_SHIFT = (TDEFL_LZ_HASH_BITS + 2) / 3,

TDEFL_LZ_HASH_SIZE = 1 << TDEFL_LZ_HASH_BITS

};

{

TDEFL_LZ_CODE_BUF_SIZE = 64 * 1024,

TDEFL_OUT_BUF_SIZE = (mz_uint)((TDEFL_LZ_CODE_BUF_SIZE * 13) / 10),

TDEFL_MAX_HUFF_SYMBOLS = 288,

TDEFL_LZ_HASH_BITS = 15,

TDEFL_LEVEL1_HASH_SIZE_MASK = 4095,

TDEFL_LZ_HASH_SHIFT = (TDEFL_LZ_HASH_BITS + 2) / 3,

TDEFL_LZ_HASH_SIZE = 1 << TDEFL_LZ_HASH_BITS

};

#endif /* TDEFL_LESS_MEMORY */

/* The low-level tdefl functions below may be used directly if the above helper functions aren't flexible enough. The low-level functions don't make any heap allocations, unlike the above helper functions. */

typedef enum

{

TDEFL_STATUS_BAD_PARAM = -2,

TDEFL_STATUS_PUT_BUF_FAILED = -1,

TDEFL_STATUS_OKAY = 0,

TDEFL_STATUS_DONE = 1

} tdefl_status;

/* Must map to MZ_NO_FLUSH, MZ_SYNC_FLUSH, etc. enums */

typedef enum

{

TDEFL_NO_FLUSH = 0,

TDEFL_SYNC_FLUSH = 2,

TDEFL_FULL_FLUSH = 3,

TDEFL_FINISH = 4

} tdefl_flush;

/* tdefl's compression state structure. */

typedef struct

{

tdefl_put_buf_func_ptr m_pPut_buf_func;

void *m_pPut_buf_user;

mz_uint m_flags, m_max_probes[2];

int m_greedy_parsing;

mz_uint m_adler32, m_lookahead_pos, m_lookahead_size, m_dict_size;

mz_uint8 *m_pLZ_code_buf, *m_pLZ_flags, *m_pOutput_buf, *m_pOutput_buf_end;

mz_uint m_num_flags_left, m_total_lz_bytes, m_lz_code_buf_dict_pos, m_bits_in, m_bit_buffer;

mz_uint m_saved_match_dist, m_saved_match_len, m_saved_lit, m_output_flush_ofs, m_output_flush_remaining, m_finished, m_block_index, m_wants_to_finish;

tdefl_status m_prev_return_status;

const void *m_pIn_buf;

void *m_pOut_buf;

size_t *m_pIn_buf_size, *m_pOut_buf_size;

tdefl_flush m_flush;

const mz_uint8 *m_pSrc;

size_t m_src_buf_left, m_out_buf_ofs;

mz_uint8 m_dict[TDEFL_LZ_DICT_SIZE + TDEFL_MAX_MATCH_LEN - 1];

mz_uint16 m_huff_count[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS];

mz_uint16 m_huff_codes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS];

mz_uint8 m_huff_code_sizes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS];

mz_uint8 m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE];

mz_uint16 m_next[TDEFL_LZ_DICT_SIZE];

mz_uint16 m_hash[TDEFL_LZ_HASH_SIZE];

mz_uint8 m_output_buf[TDEFL_OUT_BUF_SIZE];

} tdefl_compressor;

/* Initializes the compressor. */

/* There is no corresponding deinit() function because the tdefl API's do not dynamically allocate memory. */

/* pBut_buf_func: If NULL, output data will be supplied to the specified callback. In this case, the user should call the tdefl_compress_buffer() API for compression. */

/* If pBut_buf_func is NULL the user should always call the tdefl_compress() API. */

/* flags: See the above enums (TDEFL_HUFFMAN_ONLY, TDEFL_WRITE_ZLIB_HEADER, etc.) */

MINIZ_EXPORT tdefl_status tdefl_init(tdefl_compressor *d, tdefl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags);

/* Compresses a block of data, consuming as much of the specified input buffer as possible, and writing as much compressed data to the specified output buffer as possible. */

MINIZ_EXPORT tdefl_status tdefl_compress(tdefl_compressor *d, const void *pIn_buf, size_t *pIn_buf_size, void *pOut_buf, size_t *pOut_buf_size, tdefl_flush flush);

/* tdefl_compress_buffer() is only usable when the tdefl_init() is called with a non-NULL tdefl_put_buf_func_ptr. */

/* tdefl_compress_buffer() always consumes the entire input buffer. */

MINIZ_EXPORT tdefl_status tdefl_compress_buffer(tdefl_compressor *d, const void *pIn_buf, size_t in_buf_size, tdefl_flush flush);

MINIZ_EXPORT tdefl_status tdefl_get_prev_return_status(tdefl_compressor *d);

MINIZ_EXPORT mz_uint32 tdefl_get_adler32(tdefl_compressor *d);

/* Create tdefl_compress() flags given zlib-style compression parameters. */

/* level may range from [0,10] (where 10 is absolute max compression, but may be much slower on some files) */

/* window_bits may be -15 (raw deflate) or 15 (zlib) */

/* strategy may be either MZ_DEFAULT_STRATEGY, MZ_FILTERED, MZ_HUFFMAN_ONLY, MZ_RLE, or MZ_FIXED */

MINIZ_EXPORT mz_uint tdefl_create_comp_flags_from_zip_params(int level, int window_bits, int strategy);

#ifndef MINIZ_NO_MALLOC

/* Allocate the tdefl_compressor structure in C so that */

/* non-C language bindings to tdefl_ API don't need to worry about */

/* structure size and allocation mechanism. */

MINIZ_EXPORT tdefl_compressor *tdefl_compressor_alloc(void);

MINIZ_EXPORT void tdefl_compressor_free(tdefl_compressor *pComp);

#endif /* MINIZ_NO_MALLOC */

#ifdef __cplusplus

}

#endif /* __cplusplus */

#endif /* MINIZ_NO_DEFLATE_APIS */