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+#ifndef KIT_MINIZ_MINIZ_TDEF_H
+#define KIT_MINIZ_MINIZ_TDEF_H
+
+#include "miniz_common.h"
+
+#ifndef MINIZ_NO_DEFLATE_APIS
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+/* ------------------- Low-level Compression API Definitions */
+
+/* Set TDEFL_LESS_MEMORY to 1 to use less memory (compression will be
+ * slightly slower, and raw/dynamic blocks will be output more
+ * frequently). */
+# define TDEFL_LESS_MEMORY 0
+
+/* 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. */
+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. */
+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. */
+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);
+void *tdefl_write_image_to_png_file_in_memory(const void *pImage,
+ int w, int h,
+ int num_chans,
+ size_t *pLen_out);
+
+/* 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. */
+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
+};
+
+/* TDEFL_OUT_BUF_SIZE MUST be large enough to hold a single entire
+ * compressed output block (using static/fixed Huffman codes). */
+# 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
+};
+# else
+enum {
+ TDEFL_LZ_CODE_BUF_SIZE = 64 * 1024,
+ TDEFL_OUT_BUF_SIZE = (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
+
+/* 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.) */
+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. */
+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. */
+tdefl_status tdefl_compress_buffer(tdefl_compressor *d,
+ const void *pIn_buf,
+ size_t in_buf_size,
+ tdefl_flush flush);
+
+tdefl_status tdefl_get_prev_return_status(tdefl_compressor *d);
+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 */
+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. */
+tdefl_compressor *tdefl_compressor_alloc(void);
+void tdefl_compressor_free(tdefl_compressor *pComp);
+# endif
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif /*#ifndef MINIZ_NO_DEFLATE_APIS*/
+
+#endif