/* miniz.c v1.15 - public domain deflate/inflate, zlib-subset, ZIP reading/writing/appending, PNG writing
   See "unlicense" statement at the end of this file.
   Rich Geldreich <richgel99@gmail.com>, last updated Oct. 13, 2013
   Implements RFC 1950: http://www.ietf.org/rfc/rfc1950.txt and RFC 1951: http://www.ietf.org/rfc/rfc1951.txt
*/

#ifndef MINIZ_HEADER_INCLUDED
#define MINIZ_HEADER_INCLUDED

#include <stdlib.h>

// Define MINIZ_NO_ZLIB_APIS to remove all ZLIB-style compression/decompression API's.
//#define MINIZ_NO_ZLIB_APIS

// Define MINIZ_NO_MALLOC to disable all calls to malloc, free, and realloc.
// Note if MINIZ_NO_MALLOC is defined then the user must always provide custom user alloc/free/realloc
// callbacks to the zlib
//#define MINIZ_NO_MALLOC

#if defined(_M_IX86) || defined(_M_X64) || defined(__i386__) || defined(__i386) || defined(__i486__) || defined(__i486) || defined(i386) || defined(__ia64__) || defined(__x86_64__)
// MINIZ_X86_OR_X64_CPU is only used to help set the below macros.
#define MINIZ_X86_OR_X64_CPU 1
#endif

#if (__BYTE_ORDER__==__ORDER_LITTLE_ENDIAN__) || MINIZ_X86_OR_X64_CPU
// Set MINIZ_LITTLE_ENDIAN to 1 if the processor is little endian.
#define MINIZ_LITTLE_ENDIAN 1
#endif

#if MINIZ_X86_OR_X64_CPU
// Set MINIZ_USE_UNALIGNED_LOADS_AND_STORES to 1 on CPU's that permit efficient integer loads and stores from unaligned addresses.
#define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 1
#endif

#if defined(_M_X64) || defined(_WIN64) || defined(__MINGW64__) || defined(_LP64) || defined(__LP64__) || defined(__ia64__) || defined(__x86_64__)
// Set MINIZ_HAS_64BIT_REGISTERS to 1 if operations on 64-bit integers are reasonably fast (and don't involve compiler generated calls to helper functions).
#define MINIZ_HAS_64BIT_REGISTERS 1
#endif

#ifdef __cplusplus
extern "C" {
#endif

// ------------------- zlib-style API Definitions.

// For more compatibility with zlib, miniz.c uses unsigned long for some parameters/struct members. Beware: mz_ulong can be either 32 or 64-bits!
typedef unsigned long mz_ulong;

#define MZ_ADLER32_INIT (1)
// mz_adler32() returns the initial adler-32 value to use when called with ptr==NULL.
static mz_ulong mz_adler32(mz_ulong adler, const unsigned char *ptr, size_t buf_len);

// Compression strategies.
enum { MZ_DEFAULT_STRATEGY = 0, MZ_FILTERED = 1, MZ_HUFFMAN_ONLY = 2, MZ_RLE = 3, MZ_FIXED = 4 };

// Method
#define MZ_DEFLATED 8

#ifndef MINIZ_NO_ZLIB_APIS

// Heap allocation callbacks.
// Note that mz_alloc_func parameter types purpsosely differ from zlib's: items/size is size_t, not unsigned long.
typedef void *(*mz_alloc_func)(void *opaque, size_t items, size_t size);
typedef void (*mz_free_func)(void *opaque, void *address);
typedef void *(*mz_realloc_func)(void *opaque, void *address, size_t items, size_t size);

#define MZ_VERSION          "9.1.15"
#define MZ_VERNUM           0x91F0
#define MZ_VER_MAJOR        9
#define MZ_VER_MINOR        1
#define MZ_VER_REVISION     15
#define MZ_VER_SUBREVISION  0

// Flush values. For typical usage you only need MZ_NO_FLUSH and MZ_FINISH. The other values are for advanced use (refer to the zlib docs).
enum { MZ_NO_FLUSH = 0, MZ_PARTIAL_FLUSH = 1, MZ_SYNC_FLUSH = 2, MZ_FULL_FLUSH = 3, MZ_FINISH = 4, MZ_BLOCK = 5 };

// Return status codes. MZ_PARAM_ERROR is non-standard.
enum { MZ_OK = 0, MZ_STREAM_END = 1, MZ_NEED_DICT = 2, MZ_ERRNO = -1, MZ_STREAM_ERROR = -2, MZ_DATA_ERROR = -3, MZ_MEM_ERROR = -4, MZ_BUF_ERROR = -5, MZ_VERSION_ERROR = -6, MZ_PARAM_ERROR = -10000 };

// Compression levels: 0-9 are the standard zlib-style levels, 10 is best possible compression (not zlib compatible, and may be very slow), MZ_DEFAULT_COMPRESSION=MZ_DEFAULT_LEVEL.
enum { MZ_NO_COMPRESSION = 0, MZ_BEST_SPEED = 1, MZ_BEST_COMPRESSION = 9, MZ_UBER_COMPRESSION = 10, MZ_DEFAULT_LEVEL = 6, MZ_DEFAULT_COMPRESSION = -1 };

// Window bits
#define MZ_DEFAULT_WINDOW_BITS 15

struct mz_internal_state;

// Compression/decompression stream struct.
typedef struct mz_stream_s
{
  const unsigned char *next_in;     // pointer to next byte to read
  unsigned int avail_in;            // number of bytes available at next_in
  mz_ulong total_in;                // total number of bytes consumed so far

  unsigned char *next_out;          // pointer to next byte to write
  unsigned int avail_out;           // number of bytes that can be written to next_out
  mz_ulong total_out;               // total number of bytes produced so far

  char *msg;                        // error msg (unused)
  struct mz_internal_state *state;  // internal state, allocated by zalloc/zfree

  mz_alloc_func zalloc;             // optional heap allocation function (defaults to malloc)
  mz_free_func zfree;               // optional heap free function (defaults to free)
  void *opaque;                     // heap alloc function user pointer

  int data_type;                    // data_type (unused)
  mz_ulong adler;                   // adler32 of the source or uncompressed data
  mz_ulong reserved;                // not used
} mz_stream;

typedef mz_stream *mz_streamp;

// mz_deflateInit() initializes a compressor with default options:
// Parameters:
//  pStream must point to an initialized mz_stream struct.
//  level must be between [MZ_NO_COMPRESSION, MZ_BEST_COMPRESSION].
//  level 1 enables a specially optimized compression function that's been optimized purely for performance, not ratio.
//  (This special func. is currently only enabled when MINIZ_USE_UNALIGNED_LOADS_AND_STORES and MINIZ_LITTLE_ENDIAN are defined.)
// Return values:
//  MZ_OK on success.
//  MZ_STREAM_ERROR if the stream is bogus.
//  MZ_PARAM_ERROR if the input parameters are bogus.
//  MZ_MEM_ERROR on out of memory.
static int mz_deflateInit(mz_streamp pStream, int level);

// mz_deflateInit2() is like mz_deflate(), except with more control:
// Additional parameters:
//   method must be MZ_DEFLATED
//   window_bits must be MZ_DEFAULT_WINDOW_BITS (to wrap the deflate stream with zlib header/adler-32 footer) or -MZ_DEFAULT_WINDOW_BITS (raw deflate/no header or footer)
//   mem_level must be between [1, 9] (it's checked but ignored by miniz.c)
static int mz_deflateInit2(mz_streamp pStream, int level, int method, int window_bits, int mem_level, int strategy);

// Quickly resets a compressor without having to reallocate anything. Same as calling mz_deflateEnd() followed by mz_deflateInit()/mz_deflateInit2().
static int mz_deflateReset(mz_streamp pStream);

// mz_deflate() compresses the input to output, consuming as much of the input and producing as much output as possible.
// Parameters:
//   pStream is the stream to read from and write to. You must initialize/update the next_in, avail_in, next_out, and avail_out members.
//   flush may be MZ_NO_FLUSH, MZ_PARTIAL_FLUSH/MZ_SYNC_FLUSH, MZ_FULL_FLUSH, or MZ_FINISH.
// Return values:
//   MZ_OK on success (when flushing, or if more input is needed but not available, and/or there's more output to be written but the output buffer is full).
//   MZ_STREAM_END if all input has been consumed and all output bytes have been written. Don't call mz_deflate() on the stream anymore.
//   MZ_STREAM_ERROR if the stream is bogus.
//   MZ_PARAM_ERROR if one of the parameters is invalid.
//   MZ_BUF_ERROR if no forward progress is possible because the input and/or output buffers are empty. (Fill up the input buffer or free up some output space and try again.)
static int mz_deflate(mz_streamp pStream, int flush);

// mz_deflateEnd() deinitializes a compressor:
// Return values:
//  MZ_OK on success.
//  MZ_STREAM_ERROR if the stream is bogus.
static int mz_deflateEnd(mz_streamp pStream);

// Initializes a decompressor.
static int mz_inflateInit(mz_streamp pStream);

// mz_inflateInit2() is like mz_inflateInit() with an additional option that controls the window size and whether or not the stream has been wrapped with a zlib header/footer:
// window_bits must be MZ_DEFAULT_WINDOW_BITS (to parse zlib header/footer) or -MZ_DEFAULT_WINDOW_BITS (raw deflate).
static int mz_inflateInit2(mz_streamp pStream, int window_bits);

// Decompresses the input stream to the output, consuming only as much of the input as needed, and writing as much to the output as possible.
// Parameters:
//   pStream is the stream to read from and write to. You must initialize/update the next_in, avail_in, next_out, and avail_out members.
//   flush may be MZ_NO_FLUSH, MZ_SYNC_FLUSH, or MZ_FINISH.
//   On the first call, if flush is MZ_FINISH it's assumed the input and output buffers are both sized large enough to decompress the entire stream in a single call (this is slightly faster).
//   MZ_FINISH implies that there are no more source bytes available beside what's already in the input buffer, and that the output buffer is large enough to hold the rest of the decompressed data.
// Return values:
//   MZ_OK on success. Either more input is needed but not available, and/or there's more output to be written but the output buffer is full.
//   MZ_STREAM_END if all needed input has been consumed and all output bytes have been written. For zlib streams, the adler-32 of the decompressed data has also been verified.
//   MZ_STREAM_ERROR if the stream is bogus.
//   MZ_DATA_ERROR if the deflate stream is invalid.
//   MZ_PARAM_ERROR if one of the parameters is invalid.
//   MZ_BUF_ERROR if no forward progress is possible because the input buffer is empty but the inflater needs more input to continue, or if the output buffer is not large enough. Call mz_inflate() again
//   with more input data, or with more room in the output buffer (except when using single call decompression, described above).
static int mz_inflate(mz_streamp pStream, int flush);

// Deinitializes a decompressor.
static int mz_inflateEnd(mz_streamp pStream);

#endif // MINIZ_NO_ZLIB_APIS

// ------------------- Types and macros

typedef unsigned char mz_uint8;
typedef signed short mz_int16;
typedef unsigned short mz_uint16;
typedef unsigned int mz_uint32;
typedef unsigned int mz_uint;
typedef long long mz_int64;
typedef unsigned long long mz_uint64;
typedef int mz_bool;

#define MZ_FALSE (0)
#define MZ_TRUE (1)

// An attempt to work around MSVC's spammy "warning C4127: conditional expression is constant" message.
#ifdef _MSC_VER
   #define MZ_MACRO_END while (0, 0)
#else
   #define MZ_MACRO_END while (0)
#endif


// ------------------- Low-level Decompression API Definitions

// Decompression flags used by tinfl_decompress().
// TINFL_FLAG_PARSE_ZLIB_HEADER: If set, the input has a valid zlib header and ends with an adler32 checksum (it's a valid zlib stream). Otherwise, the input is a raw deflate stream.
// TINFL_FLAG_HAS_MORE_INPUT: If set, there are more input bytes available beyond the end of the supplied input buffer. If clear, the input buffer contains all remaining input.
// TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF: If set, the output buffer is large enough to hold the entire decompressed stream. If clear, the output buffer is at least the size of the dictionary (typically 32KB).
// TINFL_FLAG_COMPUTE_ADLER32: Force adler-32 checksum computation of the decompressed bytes.
enum
{
  TINFL_FLAG_PARSE_ZLIB_HEADER = 1,
  TINFL_FLAG_HAS_MORE_INPUT = 2,
  TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF = 4,
  TINFL_FLAG_COMPUTE_ADLER32 = 8
};

struct tinfl_decompressor_tag; typedef struct tinfl_decompressor_tag tinfl_decompressor;

// Max size of LZ dictionary.
#define TINFL_LZ_DICT_SIZE 32768

// Return status.
typedef enum
{
  TINFL_STATUS_BAD_PARAM = -3,
  TINFL_STATUS_ADLER32_MISMATCH = -2,
  TINFL_STATUS_FAILED = -1,
  TINFL_STATUS_DONE = 0,
  TINFL_STATUS_NEEDS_MORE_INPUT = 1,
  TINFL_STATUS_HAS_MORE_OUTPUT = 2
} tinfl_status;

// Initializes the decompressor to its initial state.
#define tinfl_init(r) do { (r)->m_state = 0; } MZ_MACRO_END
#define tinfl_get_adler32(r) (r)->m_check_adler32

// Main low-level decompressor coroutine function. This is the only function actually needed for decompression. All the other functions are just high-level helpers for improved usability.
// This is a universal API, i.e. it can be used as a building block to build any desired higher level decompression API. In the limit case, it can be called once per every byte input or output.
static tinfl_status tinfl_decompress(tinfl_decompressor *r, const mz_uint8 *pIn_buf_next, size_t *pIn_buf_size, mz_uint8 *pOut_buf_start, mz_uint8 *pOut_buf_next, size_t *pOut_buf_size, const mz_uint32 decomp_flags);

// Internal/private bits follow.
enum
{
  TINFL_MAX_HUFF_TABLES = 3, TINFL_MAX_HUFF_SYMBOLS_0 = 288, TINFL_MAX_HUFF_SYMBOLS_1 = 32, TINFL_MAX_HUFF_SYMBOLS_2 = 19,
  TINFL_FAST_LOOKUP_BITS = 10, TINFL_FAST_LOOKUP_SIZE = 1 << TINFL_FAST_LOOKUP_BITS
};

typedef struct
{
  mz_uint8 m_code_size[TINFL_MAX_HUFF_SYMBOLS_0];
  mz_int16 m_look_up[TINFL_FAST_LOOKUP_SIZE], m_tree[TINFL_MAX_HUFF_SYMBOLS_0 * 2];
} tinfl_huff_table;

#if MINIZ_HAS_64BIT_REGISTERS
  #define TINFL_USE_64BIT_BITBUF 1
#endif

#if TINFL_USE_64BIT_BITBUF
  typedef mz_uint64 tinfl_bit_buf_t;
  #define TINFL_BITBUF_SIZE (64)
#else
  typedef mz_uint32 tinfl_bit_buf_t;
  #define TINFL_BITBUF_SIZE (32)
#endif

struct tinfl_decompressor_tag
{
  mz_uint32 m_state, m_num_bits, m_zhdr0, m_zhdr1, m_z_adler32, m_final, m_type, m_check_adler32, m_dist, m_counter, m_num_extra, m_table_sizes[TINFL_MAX_HUFF_TABLES];
  tinfl_bit_buf_t m_bit_buf;
  size_t m_dist_from_out_buf_start;
  tinfl_huff_table m_tables[TINFL_MAX_HUFF_TABLES];
  mz_uint8 m_raw_header[4], m_len_codes[TINFL_MAX_HUFF_SYMBOLS_0 + TINFL_MAX_HUFF_SYMBOLS_1 + 137];
};

// ------------------- 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
};

// 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);

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.)
static 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.
static 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);

static mz_uint32 tdefl_get_adler32(tdefl_compressor *d);

// Can't use tdefl_create_comp_flags_from_zip_params if MINIZ_NO_ZLIB_APIS isn't defined, because it uses some of its macros.
#ifndef MINIZ_NO_ZLIB_APIS
// 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
static mz_uint tdefl_create_comp_flags_from_zip_params(int level, int window_bits, int strategy);
#endif // #ifndef MINIZ_NO_ZLIB_APIS

#ifdef __cplusplus
}
#endif

#endif // MINIZ_HEADER_INCLUDED

// ------------------- End of Header: Implementation follows. (If you only want the header, define MINIZ_HEADER_FILE_ONLY.)

#ifndef MINIZ_HEADER_FILE_ONLY

typedef unsigned char mz_validate_uint16[sizeof(mz_uint16)==2 ? 1 : -1];
typedef unsigned char mz_validate_uint32[sizeof(mz_uint32)==4 ? 1 : -1];
typedef unsigned char mz_validate_uint64[sizeof(mz_uint64)==8 ? 1 : -1];

#include <string.h>
#include <assert.h>

#define MZ_ASSERT(x) assert(x)

#ifdef MINIZ_NO_MALLOC
  #define MZ_MALLOC(x) NULL
  #define MZ_FREE(x) (void)x, ((void)0)
  #define MZ_REALLOC(p, x) NULL
#else
  #define MZ_MALLOC(x) malloc(x)
  #define MZ_FREE(x) free(x)
  #define MZ_REALLOC(p, x) realloc(p, x)
#endif

#define MZ_MAX(a,b) (((a)>(b))?(a):(b))
#define MZ_MIN(a,b) (((a)<(b))?(a):(b))
#define MZ_CLEAR_OBJ(obj) memset(&(obj), 0, sizeof(obj))

#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN
  #define MZ_READ_LE16(p) *((const mz_uint16 *)(p))
  #define MZ_READ_LE32(p) *((const mz_uint32 *)(p))
#else
  #define MZ_READ_LE16(p) ((mz_uint32)(((const mz_uint8 *)(p))[0]) | ((mz_uint32)(((const mz_uint8 *)(p))[1]) << 8U))
  #define MZ_READ_LE32(p) ((mz_uint32)(((const mz_uint8 *)(p))[0]) | ((mz_uint32)(((const mz_uint8 *)(p))[1]) << 8U) | ((mz_uint32)(((const mz_uint8 *)(p))[2]) << 16U) | ((mz_uint32)(((const mz_uint8 *)(p))[3]) << 24U))
#endif

#ifdef _MSC_VER
  #define MZ_FORCEINLINE __forceinline
#elif defined(__GNUC__)
  #define MZ_FORCEINLINE inline __attribute__((__always_inline__))
#else
  #define MZ_FORCEINLINE inline
#endif

#ifdef __cplusplus
  extern "C" {
#endif

// ------------------- zlib-style API's

static mz_ulong mz_adler32(mz_ulong adler, const unsigned char *ptr, size_t buf_len)
{
  mz_uint32 i, s1 = (mz_uint32)(adler & 0xffff), s2 = (mz_uint32)(adler >> 16); size_t block_len = buf_len % 5552;
  if (!ptr) return MZ_ADLER32_INIT;
  while (buf_len) {
    for (i = 0; i + 7 < block_len; i += 8, ptr += 8) {
      s1 += ptr[0], s2 += s1; s1 += ptr[1], s2 += s1; s1 += ptr[2], s2 += s1; s1 += ptr[3], s2 += s1;
      s1 += ptr[4], s2 += s1; s1 += ptr[5], s2 += s1; s1 += ptr[6], s2 += s1; s1 += ptr[7], s2 += s1;
    }
    for ( ; i < block_len; ++i) s1 += *ptr++, s2 += s1;
    s1 %= 65521U, s2 %= 65521U; buf_len -= block_len; block_len = 5552;
  }
  return (s2 << 16) + s1;
}

#ifndef MINIZ_NO_ZLIB_APIS

static void *def_alloc_func(void *opaque, size_t items, size_t size) { (void)opaque, (void)items, (void)size; return MZ_MALLOC(items * size); }
static void def_free_func(void *opaque, void *address) { (void)opaque, (void)address; MZ_FREE(address); }

static int mz_deflateInit(mz_streamp pStream, int level)
{
  return mz_deflateInit2(pStream, level, MZ_DEFLATED, MZ_DEFAULT_WINDOW_BITS, 9, MZ_DEFAULT_STRATEGY);
}

static int mz_deflateInit2(mz_streamp pStream, int level, int method, int window_bits, int mem_level, int strategy)
{
  tdefl_compressor *pComp;
  mz_uint comp_flags = TDEFL_COMPUTE_ADLER32 | tdefl_create_comp_flags_from_zip_params(level, window_bits, strategy);

  if (!pStream) return MZ_STREAM_ERROR;
  if ((method != MZ_DEFLATED) || ((mem_level < 1) || (mem_level > 9)) || ((window_bits != MZ_DEFAULT_WINDOW_BITS) && (-window_bits != MZ_DEFAULT_WINDOW_BITS))) return MZ_PARAM_ERROR;

  pStream->data_type = 0;
  pStream->adler = MZ_ADLER32_INIT;
  pStream->msg = NULL;
  pStream->reserved = 0;
  pStream->total_in = 0;
  pStream->total_out = 0;
  if (!pStream->zalloc) pStream->zalloc = def_alloc_func;
  if (!pStream->zfree) pStream->zfree = def_free_func;

  pComp = (tdefl_compressor *)pStream->zalloc(pStream->opaque, 1, sizeof(tdefl_compressor));
  if (!pComp)
    return MZ_MEM_ERROR;

  pStream->state = (struct mz_internal_state *)pComp;

  if (tdefl_init(pComp, NULL, NULL, comp_flags) != TDEFL_STATUS_OKAY)
  {
    mz_deflateEnd(pStream);
    return MZ_PARAM_ERROR;
  }

  return MZ_OK;
}

static int mz_deflateReset(mz_streamp pStream)
{
  if ((!pStream) || (!pStream->state) || (!pStream->zalloc) || (!pStream->zfree)) return MZ_STREAM_ERROR;
  pStream->total_in = pStream->total_out = 0;
  tdefl_init((tdefl_compressor*)pStream->state, NULL, NULL, ((tdefl_compressor*)pStream->state)->m_flags);
  return MZ_OK;
}

static int mz_deflate(mz_streamp pStream, int flush)
{
  size_t in_bytes, out_bytes;
  mz_ulong orig_total_in, orig_total_out;
  int mz_status = MZ_OK;

  if ((!pStream) || (!pStream->state) || (flush < 0) || (flush > MZ_FINISH) || (!pStream->next_out)) return MZ_STREAM_ERROR;
  if (!pStream->avail_out) return MZ_BUF_ERROR;

  if (flush == MZ_PARTIAL_FLUSH) flush = MZ_SYNC_FLUSH;

  if (((tdefl_compressor*)pStream->state)->m_prev_return_status == TDEFL_STATUS_DONE)
    return (flush == MZ_FINISH) ? MZ_STREAM_END : MZ_BUF_ERROR;

  orig_total_in = pStream->total_in; orig_total_out = pStream->total_out;
  for ( ; ; )
  {
    tdefl_status defl_status;
    in_bytes = pStream->avail_in; out_bytes = pStream->avail_out;

    defl_status = tdefl_compress((tdefl_compressor*)pStream->state, pStream->next_in, &in_bytes, pStream->next_out, &out_bytes, (tdefl_flush)flush);
    pStream->next_in += (mz_uint)in_bytes; pStream->avail_in -= (mz_uint)in_bytes;
    pStream->total_in += (mz_uint)in_bytes; pStream->adler = tdefl_get_adler32((tdefl_compressor*)pStream->state);

    pStream->next_out += (mz_uint)out_bytes; pStream->avail_out -= (mz_uint)out_bytes;
    pStream->total_out += (mz_uint)out_bytes;

    if (defl_status < 0)
    {
      mz_status = MZ_STREAM_ERROR;
      break;
    }
    else if (defl_status == TDEFL_STATUS_DONE)
    {
      mz_status = MZ_STREAM_END;
      break;
    }
    else if (!pStream->avail_out)
      break;
    else if ((!pStream->avail_in) && (flush != MZ_FINISH))
    {
      if ((flush) || (pStream->total_in != orig_total_in) || (pStream->total_out != orig_total_out))
        break;
      return MZ_BUF_ERROR; // Can't make forward progress without some input.
    }
  }
  return mz_status;
}

static int mz_deflateEnd(mz_streamp pStream)
{
  if (!pStream) return MZ_STREAM_ERROR;
  if (pStream->state)
  {
    pStream->zfree(pStream->opaque, pStream->state);
    pStream->state = NULL;
  }
  return MZ_OK;
}

typedef struct
{
  tinfl_decompressor m_decomp;
  mz_uint m_dict_ofs, m_dict_avail, m_first_call, m_has_flushed; int m_window_bits;
  mz_uint8 m_dict[TINFL_LZ_DICT_SIZE];
  tinfl_status m_last_status;
} inflate_state;

static int mz_inflateInit2(mz_streamp pStream, int window_bits)
{
  inflate_state *pDecomp;
  if (!pStream) return MZ_STREAM_ERROR;
  if ((window_bits != MZ_DEFAULT_WINDOW_BITS) && (-window_bits != MZ_DEFAULT_WINDOW_BITS)) return MZ_PARAM_ERROR;

  pStream->data_type = 0;
  pStream->adler = 0;
  pStream->msg = NULL;
  pStream->total_in = 0;
  pStream->total_out = 0;
  pStream->reserved = 0;
  if (!pStream->zalloc) pStream->zalloc = def_alloc_func;
  if (!pStream->zfree) pStream->zfree = def_free_func;

  pDecomp = (inflate_state*)pStream->zalloc(pStream->opaque, 1, sizeof(inflate_state));
  if (!pDecomp) return MZ_MEM_ERROR;

  pStream->state = (struct mz_internal_state *)pDecomp;

  tinfl_init(&pDecomp->m_decomp);
  pDecomp->m_dict_ofs = 0;
  pDecomp->m_dict_avail = 0;
  pDecomp->m_last_status = TINFL_STATUS_NEEDS_MORE_INPUT;
  pDecomp->m_first_call = 1;
  pDecomp->m_has_flushed = 0;
  pDecomp->m_window_bits = window_bits;

  return MZ_OK;
}

static int mz_inflateInit(mz_streamp pStream)
{
   return mz_inflateInit2(pStream, MZ_DEFAULT_WINDOW_BITS);
}

static int mz_inflate(mz_streamp pStream, int flush)
{
  inflate_state* pState;
  mz_uint n, first_call, decomp_flags = TINFL_FLAG_COMPUTE_ADLER32;
  size_t in_bytes, out_bytes, orig_avail_in;
  tinfl_status status;

  if ((!pStream) || (!pStream->state)) return MZ_STREAM_ERROR;
  if (flush == MZ_PARTIAL_FLUSH) flush = MZ_SYNC_FLUSH;
  if ((flush) && (flush != MZ_SYNC_FLUSH) && (flush != MZ_FINISH)) return MZ_STREAM_ERROR;

  pState = (inflate_state*)pStream->state;
  if (pState->m_window_bits > 0) decomp_flags |= TINFL_FLAG_PARSE_ZLIB_HEADER;
  orig_avail_in = pStream->avail_in;

  first_call = pState->m_first_call; pState->m_first_call = 0;
  if (pState->m_last_status < 0) return MZ_DATA_ERROR;

  if (pState->m_has_flushed && (flush != MZ_FINISH)) return MZ_STREAM_ERROR;
  pState->m_has_flushed |= (flush == MZ_FINISH);

  if ((flush == MZ_FINISH) && (first_call))
  {
    // MZ_FINISH on the first call implies that the input and output buffers are large enough to hold the entire compressed/decompressed file.
    decomp_flags |= TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF;
    in_bytes = pStream->avail_in; out_bytes = pStream->avail_out;
    status = tinfl_decompress(&pState->m_decomp, pStream->next_in, &in_bytes, pStream->next_out, pStream->next_out, &out_bytes, decomp_flags);
    pState->m_last_status = status;
    pStream->next_in += (mz_uint)in_bytes; pStream->avail_in -= (mz_uint)in_bytes; pStream->total_in += (mz_uint)in_bytes;
    pStream->adler = tinfl_get_adler32(&pState->m_decomp);
    pStream->next_out += (mz_uint)out_bytes; pStream->avail_out -= (mz_uint)out_bytes; pStream->total_out += (mz_uint)out_bytes;

    if (status < 0)
      return MZ_DATA_ERROR;
    else if (status != TINFL_STATUS_DONE)
    {
      pState->m_last_status = TINFL_STATUS_FAILED;
      return MZ_BUF_ERROR;
    }
    return MZ_STREAM_END;
  }
  // flush != MZ_FINISH then we must assume there's more input.
  if (flush != MZ_FINISH) decomp_flags |= TINFL_FLAG_HAS_MORE_INPUT;

  if (pState->m_dict_avail)
  {
    n = MZ_MIN(pState->m_dict_avail, pStream->avail_out);
    memcpy(pStream->next_out, pState->m_dict + pState->m_dict_ofs, n);
    pStream->next_out += n; pStream->avail_out -= n; pStream->total_out += n;
    pState->m_dict_avail -= n; pState->m_dict_ofs = (pState->m_dict_ofs + n) & (TINFL_LZ_DICT_SIZE - 1);
    return ((pState->m_last_status == TINFL_STATUS_DONE) && (!pState->m_dict_avail)) ? MZ_STREAM_END : MZ_OK;
  }

  for ( ; ; )
  {
    in_bytes = pStream->avail_in;
    out_bytes = TINFL_LZ_DICT_SIZE - pState->m_dict_ofs;

    status = tinfl_decompress(&pState->m_decomp, pStream->next_in, &in_bytes, pState->m_dict, pState->m_dict + pState->m_dict_ofs, &out_bytes, decomp_flags);
    pState->m_last_status = status;

    pStream->next_in += (mz_uint)in_bytes; pStream->avail_in -= (mz_uint)in_bytes;
    pStream->total_in += (mz_uint)in_bytes; pStream->adler = tinfl_get_adler32(&pState->m_decomp);

    pState->m_dict_avail = (mz_uint)out_bytes;

    n = MZ_MIN(pState->m_dict_avail, pStream->avail_out);
    memcpy(pStream->next_out, pState->m_dict + pState->m_dict_ofs, n);
    pStream->next_out += n; pStream->avail_out -= n; pStream->total_out += n;
    pState->m_dict_avail -= n; pState->m_dict_ofs = (pState->m_dict_ofs + n) & (TINFL_LZ_DICT_SIZE - 1);

    if (status < 0)
       return MZ_DATA_ERROR; // Stream is corrupted (there could be some uncompressed data left in the output dictionary - oh well).
    else if ((status == TINFL_STATUS_NEEDS_MORE_INPUT) && (!orig_avail_in))
      return MZ_BUF_ERROR; // Signal caller that we can't make forward progress without supplying more input or by setting flush to MZ_FINISH.
    else if (flush == MZ_FINISH)
    {
       // The output buffer MUST be large to hold the remaining uncompressed data when flush==MZ_FINISH.
       if (status == TINFL_STATUS_DONE)
          return pState->m_dict_avail ? MZ_BUF_ERROR : MZ_STREAM_END;
       // status here must be TINFL_STATUS_HAS_MORE_OUTPUT, which means there's at least 1 more byte on the way. If there's no more room left in the output buffer then something is wrong.
       else if (!pStream->avail_out)
          return MZ_BUF_ERROR;
    }
    else if ((status == TINFL_STATUS_DONE) || (!pStream->avail_in) || (!pStream->avail_out) || (pState->m_dict_avail))
      break;
  }

  return ((status == TINFL_STATUS_DONE) && (!pState->m_dict_avail)) ? MZ_STREAM_END : MZ_OK;
}

static int mz_inflateEnd(mz_streamp pStream)
{
  if (!pStream)
    return MZ_STREAM_ERROR;
  if (pStream->state)
  {
    pStream->zfree(pStream->opaque, pStream->state);
    pStream->state = NULL;
  }
  return MZ_OK;
}

#endif //MINIZ_NO_ZLIB_APIS

// ------------------- Low-level Decompression (completely independent from all compression API's)

#define TINFL_MEMCPY(d, s, l) memcpy(d, s, l)
#define TINFL_MEMSET(p, c, l) memset(p, c, l)

#define TINFL_CR_BEGIN switch(r->m_state) { case 0:
#define TINFL_CR_RETURN(state_index, result) do { status = result; r->m_state = state_index; goto common_exit; case state_index:; } MZ_MACRO_END
#define TINFL_CR_RETURN_FOREVER(state_index, result) do { for ( ; ; ) { TINFL_CR_RETURN(state_index, result); } } MZ_MACRO_END
#define TINFL_CR_FINISH }

// TODO: If the caller has indicated that there's no more input, and we attempt to read beyond the input buf, then something is wrong with the input because the inflator never
// reads ahead more than it needs to. Currently TINFL_GET_BYTE() pads the end of the stream with 0's in this scenario.
#define TINFL_GET_BYTE(state_index, c) do { \
  if (pIn_buf_cur >= pIn_buf_end) { \
    for ( ; ; ) { \
      if (decomp_flags & TINFL_FLAG_HAS_MORE_INPUT) { \
        TINFL_CR_RETURN(state_index, TINFL_STATUS_NEEDS_MORE_INPUT); \
        if (pIn_buf_cur < pIn_buf_end) { \
          c = *pIn_buf_cur++; \
          break; \
        } \
      } else { \
        c = 0; \
        break; \
      } \
    } \
  } else c = *pIn_buf_cur++; } MZ_MACRO_END

#define TINFL_NEED_BITS(state_index, n) do { mz_uint c; TINFL_GET_BYTE(state_index, c); bit_buf |= (((tinfl_bit_buf_t)c) << num_bits); num_bits += 8; } while (num_bits < (mz_uint)(n))
#define TINFL_SKIP_BITS(state_index, n) do { if (num_bits < (mz_uint)(n)) { TINFL_NEED_BITS(state_index, n); } bit_buf >>= (n); num_bits -= (n); } MZ_MACRO_END
#define TINFL_GET_BITS(state_index, b, n) do { if (num_bits < (mz_uint)(n)) { TINFL_NEED_BITS(state_index, n); } b = bit_buf & ((1 << (n)) - 1); bit_buf >>= (n); num_bits -= (n); } MZ_MACRO_END

// TINFL_HUFF_BITBUF_FILL() is only used rarely, when the number of bytes remaining in the input buffer falls below 2.
// It reads just enough bytes from the input stream that are needed to decode the next Huffman code (and absolutely no more). It works by trying to fully decode a
// Huffman code by using whatever bits are currently present in the bit buffer. If this fails, it reads another byte, and tries again until it succeeds or until the
// bit buffer contains >=15 bits (deflate's max. Huffman code size).
#define TINFL_HUFF_BITBUF_FILL(state_index, pHuff) \
  do { \
    temp = (pHuff)->m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]; \
    if (temp >= 0) { \
      code_len = temp >> 9; \
      if ((code_len) && (num_bits >= code_len)) \
      break; \
    } else if (num_bits > TINFL_FAST_LOOKUP_BITS) { \
       code_len = TINFL_FAST_LOOKUP_BITS; \
       do { \
          temp = (pHuff)->m_tree[~temp + ((bit_buf >> code_len++) & 1)]; \
       } while ((temp < 0) && (num_bits >= (code_len + 1))); if (temp >= 0) break; \
    } TINFL_GET_BYTE(state_index, c); bit_buf |= (((tinfl_bit_buf_t)c) << num_bits); num_bits += 8; \
  } while (num_bits < 15);

// TINFL_HUFF_DECODE() decodes the next Huffman coded symbol. It's more complex than you would initially expect because the zlib API expects the decompressor to never read
// beyond the final byte of the deflate stream. (In other words, when this macro wants to read another byte from the input, it REALLY needs another byte in order to fully
// decode the next Huffman code.) Handling this properly is particularly important on raw deflate (non-zlib) streams, which aren't followed by a byte aligned adler-32.
// The slow path is only executed at the very end of the input buffer.
#define TINFL_HUFF_DECODE(state_index, sym, pHuff) do { \
  int temp; mz_uint code_len, c; \
  if (num_bits < 15) { \
    if ((pIn_buf_end - pIn_buf_cur) < 2) { \
       TINFL_HUFF_BITBUF_FILL(state_index, pHuff); \
    } else { \
       bit_buf |= (((tinfl_bit_buf_t)pIn_buf_cur[0]) << num_bits) | (((tinfl_bit_buf_t)pIn_buf_cur[1]) << (num_bits + 8)); pIn_buf_cur += 2; num_bits += 16; \
    } \
  } \
  if ((temp = (pHuff)->m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]) >= 0) \
    code_len = temp >> 9, temp &= 511; \
  else { \
    code_len = TINFL_FAST_LOOKUP_BITS; do { temp = (pHuff)->m_tree[~temp + ((bit_buf >> code_len++) & 1)]; } while (temp < 0); \
  } sym = temp; bit_buf >>= code_len; num_bits -= code_len; } MZ_MACRO_END

static tinfl_status tinfl_decompress(tinfl_decompressor *r, const mz_uint8 *pIn_buf_next, size_t *pIn_buf_size, mz_uint8 *pOut_buf_start, mz_uint8 *pOut_buf_next, size_t *pOut_buf_size, const mz_uint32 decomp_flags)
{
  static const int s_length_base[31] = { 3,4,5,6,7,8,9,10,11,13, 15,17,19,23,27,31,35,43,51,59, 67,83,99,115,131,163,195,227,258,0,0 };
  static const int s_length_extra[31]= { 0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0 };
  static const int s_dist_base[32] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193, 257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0};
  static const int s_dist_extra[32] = { 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13};
  static const mz_uint8 s_length_dezigzag[19] = { 16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15 };
  static const int s_min_table_sizes[3] = { 257, 1, 4 };

  tinfl_status status = TINFL_STATUS_FAILED; mz_uint32 num_bits, dist, counter, num_extra; tinfl_bit_buf_t bit_buf;
  const mz_uint8 *pIn_buf_cur = pIn_buf_next, *const pIn_buf_end = pIn_buf_next + *pIn_buf_size;
  mz_uint8 *pOut_buf_cur = pOut_buf_next, *const pOut_buf_end = pOut_buf_next + *pOut_buf_size;
  size_t out_buf_size_mask = (decomp_flags & TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF) ? (size_t)-1 : ((pOut_buf_next - pOut_buf_start) + *pOut_buf_size) - 1, dist_from_out_buf_start;

  // Ensure the output buffer's size is a power of 2, unless the output buffer is large enough to hold the entire output file (in which case it doesn't matter).
  if (((out_buf_size_mask + 1) & out_buf_size_mask) || (pOut_buf_next < pOut_buf_start)) { *pIn_buf_size = *pOut_buf_size = 0; return TINFL_STATUS_BAD_PARAM; }

  num_bits = r->m_num_bits; bit_buf = r->m_bit_buf; dist = r->m_dist; counter = r->m_counter; num_extra = r->m_num_extra; dist_from_out_buf_start = r->m_dist_from_out_buf_start;
  TINFL_CR_BEGIN

  bit_buf = num_bits = dist = counter = num_extra = r->m_zhdr0 = r->m_zhdr1 = 0; r->m_z_adler32 = r->m_check_adler32 = 1;
  if (decomp_flags & TINFL_FLAG_PARSE_ZLIB_HEADER)
  {
    TINFL_GET_BYTE(1, r->m_zhdr0); TINFL_GET_BYTE(2, r->m_zhdr1);
    counter = (((r->m_zhdr0 * 256 + r->m_zhdr1) % 31 != 0) || (r->m_zhdr1 & 32) || ((r->m_zhdr0 & 15) != 8));
    if (!(decomp_flags & TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF)) counter |= (((1U << (8U + (r->m_zhdr0 >> 4))) > 32768U) || ((out_buf_size_mask + 1) < (size_t)(1U << (8U + (r->m_zhdr0 >> 4)))));
    if (counter) { TINFL_CR_RETURN_FOREVER(36, TINFL_STATUS_FAILED); }
  }

  do
  {
    TINFL_GET_BITS(3, r->m_final, 3); r->m_type = r->m_final >> 1;
    if (r->m_type == 0)
    {
      TINFL_SKIP_BITS(5, num_bits & 7);
      for (counter = 0; counter < 4; ++counter) { if (num_bits) TINFL_GET_BITS(6, r->m_raw_header[counter], 8); else TINFL_GET_BYTE(7, r->m_raw_header[counter]); }
      if ((counter = (r->m_raw_header[0] | (r->m_raw_header[1] << 8))) != (mz_uint)(0xFFFF ^ (r->m_raw_header[2] | (r->m_raw_header[3] << 8)))) { TINFL_CR_RETURN_FOREVER(39, TINFL_STATUS_FAILED); }
      while ((counter) && (num_bits))
      {
        TINFL_GET_BITS(51, dist, 8);
        while (pOut_buf_cur >= pOut_buf_end) { TINFL_CR_RETURN(52, TINFL_STATUS_HAS_MORE_OUTPUT); }
        *pOut_buf_cur++ = (mz_uint8)dist;
        counter--;
      }
      while (counter)
      {
        size_t n; while (pOut_buf_cur >= pOut_buf_end) { TINFL_CR_RETURN(9, TINFL_STATUS_HAS_MORE_OUTPUT); }
        while (pIn_buf_cur >= pIn_buf_end)
        {
          if (decomp_flags & TINFL_FLAG_HAS_MORE_INPUT)
          {
            TINFL_CR_RETURN(38, TINFL_STATUS_NEEDS_MORE_INPUT);
          }
          else
          {
            TINFL_CR_RETURN_FOREVER(40, TINFL_STATUS_FAILED);
          }
        }
        n = MZ_MIN(MZ_MIN((size_t)(pOut_buf_end - pOut_buf_cur), (size_t)(pIn_buf_end - pIn_buf_cur)), counter);
        TINFL_MEMCPY(pOut_buf_cur, pIn_buf_cur, n); pIn_buf_cur += n; pOut_buf_cur += n; counter -= (mz_uint)n;
      }
    }
    else if (r->m_type == 3)
    {
      TINFL_CR_RETURN_FOREVER(10, TINFL_STATUS_FAILED);
    }
    else
    {
      if (r->m_type == 1)
      {
        mz_uint8 *p = r->m_tables[0].m_code_size; mz_uint i;
        r->m_table_sizes[0] = 288; r->m_table_sizes[1] = 32; TINFL_MEMSET(r->m_tables[1].m_code_size, 5, 32);
        for ( i = 0; i <= 143; ++i) *p++ = 8;
        for ( ; i <= 255; ++i) *p++ = 9;
        for ( ; i <= 279; ++i) *p++ = 7;
        for ( ; i <= 287; ++i) *p++ = 8;
      }
      else
      {
        for (counter = 0; counter < 3; counter++) { TINFL_GET_BITS(11, r->m_table_sizes[counter], "\05\05\04"[counter]); r->m_table_sizes[counter] += s_min_table_sizes[counter]; }
        MZ_CLEAR_OBJ(r->m_tables[2].m_code_size); for (counter = 0; counter < r->m_table_sizes[2]; counter++) { mz_uint s; TINFL_GET_BITS(14, s, 3); r->m_tables[2].m_code_size[s_length_dezigzag[counter]] = (mz_uint8)s; }
        r->m_table_sizes[2] = 19;
      }
      for ( ; (int)r->m_type >= 0; r->m_type--)
      {
        int tree_next, tree_cur; tinfl_huff_table *pTable;
        mz_uint i, j, used_syms, total, sym_index, next_code[17], total_syms[16]; pTable = &r->m_tables[r->m_type]; MZ_CLEAR_OBJ(total_syms); MZ_CLEAR_OBJ(pTable->m_look_up); MZ_CLEAR_OBJ(pTable->m_tree);
        for (i = 0; i < r->m_table_sizes[r->m_type]; ++i) total_syms[pTable->m_code_size[i]]++;
        used_syms = 0, total = 0; next_code[0] = next_code[1] = 0;
        for (i = 1; i <= 15; ++i) { used_syms += total_syms[i]; next_code[i + 1] = (total = ((total + total_syms[i]) << 1)); }
        if ((65536 != total) && (used_syms > 1))
        {
          TINFL_CR_RETURN_FOREVER(35, TINFL_STATUS_FAILED);
        }
        for (tree_next = -1, sym_index = 0; sym_index < r->m_table_sizes[r->m_type]; ++sym_index)
        {
          mz_uint rev_code = 0, l, cur_code, code_size = pTable->m_code_size[sym_index]; if (!code_size) continue;
          cur_code = next_code[code_size]++; for (l = code_size; l > 0; l--, cur_code >>= 1) rev_code = (rev_code << 1) | (cur_code & 1);
          if (code_size <= TINFL_FAST_LOOKUP_BITS) { mz_int16 k = (mz_int16)((code_size << 9) | sym_index); while (rev_code < TINFL_FAST_LOOKUP_SIZE) { pTable->m_look_up[rev_code] = k; rev_code += (1 << code_size); } continue; }
          if (0 == (tree_cur = pTable->m_look_up[rev_code & (TINFL_FAST_LOOKUP_SIZE - 1)])) { pTable->m_look_up[rev_code & (TINFL_FAST_LOOKUP_SIZE - 1)] = (mz_int16)tree_next; tree_cur = tree_next; tree_next -= 2; }
          rev_code >>= (TINFL_FAST_LOOKUP_BITS - 1);
          for (j = code_size; j > (TINFL_FAST_LOOKUP_BITS + 1); j--)
          {
            tree_cur -= ((rev_code >>= 1) & 1);
            if (!pTable->m_tree[-tree_cur - 1]) { pTable->m_tree[-tree_cur - 1] = (mz_int16)tree_next; tree_cur = tree_next; tree_next -= 2; } else tree_cur = pTable->m_tree[-tree_cur - 1];
          }
          tree_cur -= ((rev_code >>= 1) & 1); pTable->m_tree[-tree_cur - 1] = (mz_int16)sym_index;
        }
        if (r->m_type == 2)
        {
          for (counter = 0; counter < (r->m_table_sizes[0] + r->m_table_sizes[1]); )
          {
            mz_uint s; TINFL_HUFF_DECODE(16, dist, &r->m_tables[2]); if (dist < 16) { r->m_len_codes[counter++] = (mz_uint8)dist; continue; }
            if ((dist == 16) && (!counter))
            {
              TINFL_CR_RETURN_FOREVER(17, TINFL_STATUS_FAILED);
            }
            num_extra = "\02\03\07"[dist - 16]; TINFL_GET_BITS(18, s, num_extra); s += "\03\03\013"[dist - 16];
            TINFL_MEMSET(r->m_len_codes + counter, (dist == 16) ? r->m_len_codes[counter - 1] : 0, s); counter += s;
          }
          if ((r->m_table_sizes[0] + r->m_table_sizes[1]) != counter)
          {
            TINFL_CR_RETURN_FOREVER(21, TINFL_STATUS_FAILED);
          }
          TINFL_MEMCPY(r->m_tables[0].m_code_size, r->m_len_codes, r->m_table_sizes[0]); TINFL_MEMCPY(r->m_tables[1].m_code_size, r->m_len_codes + r->m_table_sizes[0], r->m_table_sizes[1]);
        }
      }
      for ( ; ; )
      {
        mz_uint8 *pSrc;
        for ( ; ; )
        {
          if (((pIn_buf_end - pIn_buf_cur) < 4) || ((pOut_buf_end - pOut_buf_cur) < 2))
          {
            TINFL_HUFF_DECODE(23, counter, &r->m_tables[0]);
            if (counter >= 256)
              break;
            while (pOut_buf_cur >= pOut_buf_end) { TINFL_CR_RETURN(24, TINFL_STATUS_HAS_MORE_OUTPUT); }
            *pOut_buf_cur++ = (mz_uint8)counter;
          }
          else
          {
            int sym2; mz_uint code_len;
#if TINFL_USE_64BIT_BITBUF
            if (num_bits < 30) { bit_buf |= (((tinfl_bit_buf_t)MZ_READ_LE32(pIn_buf_cur)) << num_bits); pIn_buf_cur += 4; num_bits += 32; }
#else
            if (num_bits < 15) { bit_buf |= (((tinfl_bit_buf_t)MZ_READ_LE16(pIn_buf_cur)) << num_bits); pIn_buf_cur += 2; num_bits += 16; }
#endif
            if ((sym2 = r->m_tables[0].m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]) >= 0)
              code_len = sym2 >> 9;
            else
            {
              code_len = TINFL_FAST_LOOKUP_BITS; do { sym2 = r->m_tables[0].m_tree[~sym2 + ((bit_buf >> code_len++) & 1)]; } while (sym2 < 0);
            }
            counter = sym2; bit_buf >>= code_len; num_bits -= code_len;
            if (counter & 256)
              break;

#if !TINFL_USE_64BIT_BITBUF
            if (num_bits < 15) { bit_buf |= (((tinfl_bit_buf_t)MZ_READ_LE16(pIn_buf_cur)) << num_bits); pIn_buf_cur += 2; num_bits += 16; }
#endif
            if ((sym2 = r->m_tables[0].m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]) >= 0)
              code_len = sym2 >> 9;
            else
            {
              code_len = TINFL_FAST_LOOKUP_BITS; do { sym2 = r->m_tables[0].m_tree[~sym2 + ((bit_buf >> code_len++) & 1)]; } while (sym2 < 0);
            }
            bit_buf >>= code_len; num_bits -= code_len;

            pOut_buf_cur[0] = (mz_uint8)counter;
            if (sym2 & 256)
            {
              pOut_buf_cur++;
              counter = sym2;
              break;
            }
            pOut_buf_cur[1] = (mz_uint8)sym2;
            pOut_buf_cur += 2;
          }
        }
        if ((counter &= 511) == 256) break;

        num_extra = s_length_extra[counter - 257]; counter = s_length_base[counter - 257];
        if (num_extra) { mz_uint extra_bits; TINFL_GET_BITS(25, extra_bits, num_extra); counter += extra_bits; }

        TINFL_HUFF_DECODE(26, dist, &r->m_tables[1]);
        num_extra = s_dist_extra[dist]; dist = s_dist_base[dist];
        if (num_extra) { mz_uint extra_bits; TINFL_GET_BITS(27, extra_bits, num_extra); dist += extra_bits; }

        dist_from_out_buf_start = pOut_buf_cur - pOut_buf_start;
        if ((dist > dist_from_out_buf_start) && (decomp_flags & TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF))
        {
          TINFL_CR_RETURN_FOREVER(37, TINFL_STATUS_FAILED);
        }

        pSrc = pOut_buf_start + ((dist_from_out_buf_start - dist) & out_buf_size_mask);

        if ((MZ_MAX(pOut_buf_cur, pSrc) + counter) > pOut_buf_end)
        {
          while (counter--)
          {
            while (pOut_buf_cur >= pOut_buf_end) { TINFL_CR_RETURN(53, TINFL_STATUS_HAS_MORE_OUTPUT); }
            *pOut_buf_cur++ = pOut_buf_start[(dist_from_out_buf_start++ - dist) & out_buf_size_mask];
          }
          continue;
        }
#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES
        else if ((counter >= 9) && (counter <= dist))
        {
          const mz_uint8 *pSrc_end = pSrc + (counter & ~7);
          do
          {
            ((mz_uint32 *)pOut_buf_cur)[0] = ((const mz_uint32 *)pSrc)[0];
            ((mz_uint32 *)pOut_buf_cur)[1] = ((const mz_uint32 *)pSrc)[1];
            pOut_buf_cur += 8;
          } while ((pSrc += 8) < pSrc_end);
          if ((counter &= 7) < 3)
          {
            if (counter)
            {
              pOut_buf_cur[0] = pSrc[0];
              if (counter > 1)
                pOut_buf_cur[1] = pSrc[1];
              pOut_buf_cur += counter;
            }
            continue;
          }
        }
#endif
        do
        {
          pOut_buf_cur[0] = pSrc[0];
          pOut_buf_cur[1] = pSrc[1];
          pOut_buf_cur[2] = pSrc[2];
          pOut_buf_cur += 3; pSrc += 3;
        } while ((int)(counter -= 3) > 2);
        if ((int)counter > 0)
        {
          pOut_buf_cur[0] = pSrc[0];
          if ((int)counter > 1)
            pOut_buf_cur[1] = pSrc[1];
          pOut_buf_cur += counter;
        }
      }
    }
  } while (!(r->m_final & 1));
  if (decomp_flags & TINFL_FLAG_PARSE_ZLIB_HEADER)
  {
    TINFL_SKIP_BITS(32, num_bits & 7); for (counter = 0; counter < 4; ++counter) { mz_uint s; if (num_bits) TINFL_GET_BITS(41, s, 8); else TINFL_GET_BYTE(42, s); r->m_z_adler32 = (r->m_z_adler32 << 8) | s; }
  }
  TINFL_CR_RETURN_FOREVER(34, TINFL_STATUS_DONE);
  TINFL_CR_FINISH

common_exit:
  r->m_num_bits = num_bits; r->m_bit_buf = bit_buf; r->m_dist = dist; r->m_counter = counter; r->m_num_extra = num_extra; r->m_dist_from_out_buf_start = dist_from_out_buf_start;
  *pIn_buf_size = pIn_buf_cur - pIn_buf_next; *pOut_buf_size = pOut_buf_cur - pOut_buf_next;
  if ((decomp_flags & (TINFL_FLAG_PARSE_ZLIB_HEADER | TINFL_FLAG_COMPUTE_ADLER32)) && (status >= 0))
  {
    const mz_uint8 *ptr = pOut_buf_next; size_t buf_len = *pOut_buf_size;
    mz_uint32 i, s1 = r->m_check_adler32 & 0xffff, s2 = r->m_check_adler32 >> 16; size_t block_len = buf_len % 5552;
    while (buf_len)
    {
      for (i = 0; i + 7 < block_len; i += 8, ptr += 8)
      {
        s1 += ptr[0], s2 += s1; s1 += ptr[1], s2 += s1; s1 += ptr[2], s2 += s1; s1 += ptr[3], s2 += s1;
        s1 += ptr[4], s2 += s1; s1 += ptr[5], s2 += s1; s1 += ptr[6], s2 += s1; s1 += ptr[7], s2 += s1;
      }
      for ( ; i < block_len; ++i) s1 += *ptr++, s2 += s1;
      s1 %= 65521U, s2 %= 65521U; buf_len -= block_len; block_len = 5552;
    }
    r->m_check_adler32 = (s2 << 16) + s1; if ((status == TINFL_STATUS_DONE) && (decomp_flags & TINFL_FLAG_PARSE_ZLIB_HEADER) && (r->m_check_adler32 != r->m_z_adler32)) status = TINFL_STATUS_ADLER32_MISMATCH;
  }
  return status;
}

// ------------------- Low-level Compression (independent from all decompression API's)

// Purposely making these tables static for faster init and thread safety.
static const mz_uint16 s_tdefl_len_sym[256] = {
  257,258,259,260,261,262,263,264,265,265,266,266,267,267,268,268,269,269,269,269,270,270,270,270,271,271,271,271,272,272,272,272,
  273,273,273,273,273,273,273,273,274,274,274,274,274,274,274,274,275,275,275,275,275,275,275,275,276,276,276,276,276,276,276,276,
  277,277,277,277,277,277,277,277,277,277,277,277,277,277,277,277,278,278,278,278,278,278,278,278,278,278,278,278,278,278,278,278,
  279,279,279,279,279,279,279,279,279,279,279,279,279,279,279,279,280,280,280,280,280,280,280,280,280,280,280,280,280,280,280,280,
  281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,
  282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,
  283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,
  284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,285 };

static const mz_uint8 s_tdefl_len_extra[256] = {
  0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,
  4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,
  5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
  5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,0 };

static const mz_uint8 s_tdefl_small_dist_sym[512] = {
  0,1,2,3,4,4,5,5,6,6,6,6,7,7,7,7,8,8,8,8,8,8,8,8,9,9,9,9,9,9,9,9,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,11,11,11,11,11,11,
  11,11,11,11,11,11,11,11,11,11,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,13,
  13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,14,14,14,14,14,14,14,14,14,14,14,14,
  14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
  14,14,14,14,14,14,14,14,14,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,
  15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,16,16,16,16,16,16,16,16,16,16,16,16,16,
  16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,
  16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,
  16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,17,17,17,17,17,17,17,17,17,17,17,17,17,17,
  17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,
  17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,
  17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17 };

static const mz_uint8 s_tdefl_small_dist_extra[512] = {
  0,0,0,0,1,1,1,1,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,
  5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
  6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
  6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
  7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
  7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
  7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
  7,7,7,7,7,7,7,7 };

static const mz_uint8 s_tdefl_large_dist_sym[128] = {
  0,0,18,19,20,20,21,21,22,22,22,22,23,23,23,23,24,24,24,24,24,24,24,24,25,25,25,25,25,25,25,25,26,26,26,26,26,26,26,26,26,26,26,26,
  26,26,26,26,27,27,27,27,27,27,27,27,27,27,27,27,27,27,27,27,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,
  28,28,28,28,28,28,28,28,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29 };

static const mz_uint8 s_tdefl_large_dist_extra[128] = {
  0,0,8,8,9,9,9,9,10,10,10,10,10,10,10,10,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,
  12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,
  13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13 };

// Radix sorts tdefl_sym_freq[] array by 16-bit key m_key. Returns ptr to sorted values.
typedef struct { mz_uint16 m_key, m_sym_index; } tdefl_sym_freq;
static tdefl_sym_freq* tdefl_radix_sort_syms(mz_uint num_syms, tdefl_sym_freq* pSyms0, tdefl_sym_freq* pSyms1)
{
  mz_uint32 total_passes = 2, pass_shift, pass, i, hist[256 * 2]; tdefl_sym_freq* pCur_syms = pSyms0, *pNew_syms = pSyms1; MZ_CLEAR_OBJ(hist);
  for (i = 0; i < num_syms; i++) { mz_uint freq = pSyms0[i].m_key; hist[freq & 0xFF]++; hist[256 + ((freq >> 8) & 0xFF)]++; }
  while ((total_passes > 1) && (num_syms == hist[(total_passes - 1) * 256])) total_passes--;
  for (pass_shift = 0, pass = 0; pass < total_passes; pass++, pass_shift += 8)
  {
    const mz_uint32* pHist = &hist[pass << 8];
    mz_uint offsets[256], cur_ofs = 0;
    for (i = 0; i < 256; i++) { offsets[i] = cur_ofs; cur_ofs += pHist[i]; }
    for (i = 0; i < num_syms; i++) pNew_syms[offsets[(pCur_syms[i].m_key >> pass_shift) & 0xFF]++] = pCur_syms[i];
    { tdefl_sym_freq* t = pCur_syms; pCur_syms = pNew_syms; pNew_syms = t; }
  }
  return pCur_syms;
}

// tdefl_calculate_minimum_redundancy() originally written by: Alistair Moffat, alistair@cs.mu.oz.au, Jyrki Katajainen, jyrki@diku.dk, November 1996.
static void tdefl_calculate_minimum_redundancy(tdefl_sym_freq *A, int n)
{
  int root, leaf, next, avbl, used, dpth;
  if (n==0) return; else if (n==1) { A[0].m_key = 1; return; }
  A[0].m_key += A[1].m_key; root = 0; leaf = 2;
  for (next=1; next < n-1; next++)
  {
    if (leaf>=n || A[root].m_key<A[leaf].m_key) { A[next].m_key = A[root].m_key; A[root++].m_key = (mz_uint16)next; } else A[next].m_key = A[leaf++].m_key;
    if (leaf>=n || (root<next && A[root].m_key<A[leaf].m_key)) { A[next].m_key = (mz_uint16)(A[next].m_key + A[root].m_key); A[root++].m_key = (mz_uint16)next; } else A[next].m_key = (mz_uint16)(A[next].m_key + A[leaf++].m_key);
  }
  A[n-2].m_key = 0; for (next=n-3; next>=0; next--) A[next].m_key = A[A[next].m_key].m_key+1;
  avbl = 1; used = dpth = 0; root = n-2; next = n-1;
  while (avbl>0)
  {
    while (root>=0 && (int)A[root].m_key==dpth) { used++; root--; }
    while (avbl>used) { A[next--].m_key = (mz_uint16)(dpth); avbl--; }
    avbl = 2*used; dpth++; used = 0;
  }
}

// Limits canonical Huffman code table's max code size.
enum { TDEFL_MAX_SUPPORTED_HUFF_CODESIZE = 32 };
static void tdefl_huffman_enforce_max_code_size(int *pNum_codes, int code_list_len, int max_code_size)
{
  int i; mz_uint32 total = 0; if (code_list_len <= 1) return;
  for (i = max_code_size + 1; i <= TDEFL_MAX_SUPPORTED_HUFF_CODESIZE; i++) pNum_codes[max_code_size] += pNum_codes[i];
  for (i = max_code_size; i > 0; i--) total += (((mz_uint32)pNum_codes[i]) << (max_code_size - i));
  while (total != (1UL << max_code_size))
  {
    pNum_codes[max_code_size]--;
    for (i = max_code_size - 1; i > 0; i--) if (pNum_codes[i]) { pNum_codes[i]--; pNum_codes[i + 1] += 2; break; }
    total--;
  }
}

static void tdefl_optimize_huffman_table(tdefl_compressor *d, int table_num, int table_len, int code_size_limit, int static_table)
{
  int i, j, l, num_codes[1 + TDEFL_MAX_SUPPORTED_HUFF_CODESIZE]; mz_uint next_code[TDEFL_MAX_SUPPORTED_HUFF_CODESIZE + 1]; MZ_CLEAR_OBJ(num_codes);
  if (static_table)
  {
    for (i = 0; i < table_len; i++) num_codes[d->m_huff_code_sizes[table_num][i]]++;
  }
  else
  {
    tdefl_sym_freq syms0[TDEFL_MAX_HUFF_SYMBOLS], syms1[TDEFL_MAX_HUFF_SYMBOLS], *pSyms;
    int num_used_syms = 0;
    const mz_uint16 *pSym_count = &d->m_huff_count[table_num][0];
    for (i = 0; i < table_len; i++) if (pSym_count[i]) { syms0[num_used_syms].m_key = (mz_uint16)pSym_count[i]; syms0[num_used_syms++].m_sym_index = (mz_uint16)i; }

    pSyms = tdefl_radix_sort_syms(num_used_syms, syms0, syms1); tdefl_calculate_minimum_redundancy(pSyms, num_used_syms);

    for (i = 0; i < num_used_syms; i++) num_codes[pSyms[i].m_key]++;

    tdefl_huffman_enforce_max_code_size(num_codes, num_used_syms, code_size_limit);

    MZ_CLEAR_OBJ(d->m_huff_code_sizes[table_num]); MZ_CLEAR_OBJ(d->m_huff_codes[table_num]);
    for (i = 1, j = num_used_syms; i <= code_size_limit; i++)
      for (l = num_codes[i]; l > 0; l--) d->m_huff_code_sizes[table_num][pSyms[--j].m_sym_index] = (mz_uint8)(i);
  }

  next_code[1] = 0; for (j = 0, i = 2; i <= code_size_limit; i++) next_code[i] = j = ((j + num_codes[i - 1]) << 1);

  for (i = 0; i < table_len; i++)
  {
    mz_uint rev_code = 0, code, code_size; if ((code_size = d->m_huff_code_sizes[table_num][i]) == 0) continue;
    code = next_code[code_size]++; for (l = code_size; l > 0; l--, code >>= 1) rev_code = (rev_code << 1) | (code & 1);
    d->m_huff_codes[table_num][i] = (mz_uint16)rev_code;
  }
}

#define TDEFL_PUT_BITS(b, l) do { \
  mz_uint bits = b; mz_uint len = l; MZ_ASSERT(bits <= ((1U << len) - 1U)); \
  d->m_bit_buffer |= (bits << d->m_bits_in); d->m_bits_in += len; \
  while (d->m_bits_in >= 8) { \
    if (d->m_pOutput_buf < d->m_pOutput_buf_end) { \
      *d->m_pOutput_buf++ = (mz_uint8)(d->m_bit_buffer); } \
    d->m_bit_buffer >>= 8; \
    d->m_bits_in -= 8; \
  } \
} MZ_MACRO_END

#define TDEFL_RLE_PREV_CODE_SIZE() { if (rle_repeat_count) { \
  if (rle_repeat_count < 3) { \
    d->m_huff_count[2][prev_code_size] = (mz_uint16)(d->m_huff_count[2][prev_code_size] + rle_repeat_count); \
    while (rle_repeat_count--) packed_code_sizes[num_packed_code_sizes++] = prev_code_size; \
  } else { \
    d->m_huff_count[2][16] = (mz_uint16)(d->m_huff_count[2][16] + 1); packed_code_sizes[num_packed_code_sizes++] = 16; packed_code_sizes[num_packed_code_sizes++] = (mz_uint8)(rle_repeat_count - 3); \
} rle_repeat_count = 0; } }

#define TDEFL_RLE_ZERO_CODE_SIZE() { if (rle_z_count) { \
  if (rle_z_count < 3) { \
    d->m_huff_count[2][0] = (mz_uint16)(d->m_huff_count[2][0] + rle_z_count); while (rle_z_count--) packed_code_sizes[num_packed_code_sizes++] = 0; \
  } else if (rle_z_count <= 10) { \
    d->m_huff_count[2][17] = (mz_uint16)(d->m_huff_count[2][17] + 1); packed_code_sizes[num_packed_code_sizes++] = 17; packed_code_sizes[num_packed_code_sizes++] = (mz_uint8)(rle_z_count - 3); \
  } else { \
    d->m_huff_count[2][18] = (mz_uint16)(d->m_huff_count[2][18] + 1); packed_code_sizes[num_packed_code_sizes++] = 18; packed_code_sizes[num_packed_code_sizes++] = (mz_uint8)(rle_z_count - 11); \
} rle_z_count = 0; } }

static mz_uint8 s_tdefl_packed_code_size_syms_swizzle[] = { 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 };

static void tdefl_start_dynamic_block(tdefl_compressor *d)
{
  int num_lit_codes, num_dist_codes, num_bit_lengths; mz_uint i, total_code_sizes_to_pack, num_packed_code_sizes, rle_z_count, rle_repeat_count, packed_code_sizes_index;
  mz_uint8 code_sizes_to_pack[TDEFL_MAX_HUFF_SYMBOLS_0 + TDEFL_MAX_HUFF_SYMBOLS_1], packed_code_sizes[TDEFL_MAX_HUFF_SYMBOLS_0 + TDEFL_MAX_HUFF_SYMBOLS_1], prev_code_size = 0xFF;

  d->m_huff_count[0][256] = 1;

  tdefl_optimize_huffman_table(d, 0, TDEFL_MAX_HUFF_SYMBOLS_0, 15, MZ_FALSE);
  tdefl_optimize_huffman_table(d, 1, TDEFL_MAX_HUFF_SYMBOLS_1, 15, MZ_FALSE);

  for (num_lit_codes = 286; num_lit_codes > 257; num_lit_codes--) if (d->m_huff_code_sizes[0][num_lit_codes - 1]) break;
  for (num_dist_codes = 30; num_dist_codes > 1; num_dist_codes--) if (d->m_huff_code_sizes[1][num_dist_codes - 1]) break;

  memcpy(code_sizes_to_pack, &d->m_huff_code_sizes[0][0], num_lit_codes);
  memcpy(code_sizes_to_pack + num_lit_codes, &d->m_huff_code_sizes[1][0], num_dist_codes);
  total_code_sizes_to_pack = num_lit_codes + num_dist_codes; num_packed_code_sizes = 0; rle_z_count = 0; rle_repeat_count = 0;

  memset(&d->m_huff_count[2][0], 0, sizeof(d->m_huff_count[2][0]) * TDEFL_MAX_HUFF_SYMBOLS_2);
  for (i = 0; i < total_code_sizes_to_pack; i++)
  {
    mz_uint8 code_size = code_sizes_to_pack[i];
    if (!code_size)
    {
      TDEFL_RLE_PREV_CODE_SIZE();
      if (++rle_z_count == 138) { TDEFL_RLE_ZERO_CODE_SIZE(); }
    }
    else
    {
      TDEFL_RLE_ZERO_CODE_SIZE();
      if (code_size != prev_code_size)
      {
        TDEFL_RLE_PREV_CODE_SIZE();
        d->m_huff_count[2][code_size] = (mz_uint16)(d->m_huff_count[2][code_size] + 1); packed_code_sizes[num_packed_code_sizes++] = code_size;
      }
      else if (++rle_repeat_count == 6)
      {
        TDEFL_RLE_PREV_CODE_SIZE();
      }
    }
    prev_code_size = code_size;
  }
  if (rle_repeat_count) { TDEFL_RLE_PREV_CODE_SIZE(); } else { TDEFL_RLE_ZERO_CODE_SIZE(); }

  tdefl_optimize_huffman_table(d, 2, TDEFL_MAX_HUFF_SYMBOLS_2, 7, MZ_FALSE);

  TDEFL_PUT_BITS(2, 2);

  TDEFL_PUT_BITS(num_lit_codes - 257, 5);
  TDEFL_PUT_BITS(num_dist_codes - 1, 5);

  for (num_bit_lengths = 18; num_bit_lengths >= 0; num_bit_lengths--) if (d->m_huff_code_sizes[2][s_tdefl_packed_code_size_syms_swizzle[num_bit_lengths]]) break;
  num_bit_lengths = MZ_MAX(4, (num_bit_lengths + 1)); TDEFL_PUT_BITS(num_bit_lengths - 4, 4);
  for (i = 0; (int)i < num_bit_lengths; i++) TDEFL_PUT_BITS(d->m_huff_code_sizes[2][s_tdefl_packed_code_size_syms_swizzle[i]], 3);

  for (packed_code_sizes_index = 0; packed_code_sizes_index < num_packed_code_sizes; )
  {
    mz_uint code = packed_code_sizes[packed_code_sizes_index++]; MZ_ASSERT(code < TDEFL_MAX_HUFF_SYMBOLS_2);
    TDEFL_PUT_BITS(d->m_huff_codes[2][code], d->m_huff_code_sizes[2][code]);
    if (code >= 16) TDEFL_PUT_BITS(packed_code_sizes[packed_code_sizes_index++], "\02\03\07"[code - 16]);
  }
}

static void tdefl_start_static_block(tdefl_compressor *d)
{
  mz_uint i;
  mz_uint8 *p = &d->m_huff_code_sizes[0][0];

  for (i = 0; i <= 143; ++i) *p++ = 8;
  for ( ; i <= 255; ++i) *p++ = 9;
  for ( ; i <= 279; ++i) *p++ = 7;
  for ( ; i <= 287; ++i) *p++ = 8;

  memset(d->m_huff_code_sizes[1], 5, 32);

  tdefl_optimize_huffman_table(d, 0, 288, 15, MZ_TRUE);
  tdefl_optimize_huffman_table(d, 1, 32, 15, MZ_TRUE);

  TDEFL_PUT_BITS(1, 2);
}

static const mz_uint mz_bitmasks[17] = { 0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F, 0x00FF, 0x01FF, 0x03FF, 0x07FF, 0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF };

#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN && MINIZ_HAS_64BIT_REGISTERS
static mz_bool tdefl_compress_lz_codes(tdefl_compressor *d)
{
  mz_uint flags;
  mz_uint8 *pLZ_codes;
  mz_uint8 *pOutput_buf = d->m_pOutput_buf;
  mz_uint8 *pLZ_code_buf_end = d->m_pLZ_code_buf;
  mz_uint64 bit_buffer = d->m_bit_buffer;
  mz_uint bits_in = d->m_bits_in;

#define TDEFL_PUT_BITS_FAST(b, l) { bit_buffer |= (((mz_uint64)(b)) << bits_in); bits_in += (l); }

  flags = 1;
  for (pLZ_codes = d->m_lz_code_buf; pLZ_codes < pLZ_code_buf_end; flags >>= 1)
  {
    if (flags == 1)
      flags = *pLZ_codes++ | 0x100;

    if (flags & 1)
    {
      mz_uint s0, s1, n0, n1, sym, num_extra_bits;
      mz_uint match_len = pLZ_codes[0], match_dist = *(const mz_uint16 *)(pLZ_codes + 1); pLZ_codes += 3;

      MZ_ASSERT(d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]);
      TDEFL_PUT_BITS_FAST(d->m_huff_codes[0][s_tdefl_len_sym[match_len]], d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]);
      TDEFL_PUT_BITS_FAST(match_len & mz_bitmasks[s_tdefl_len_extra[match_len]], s_tdefl_len_extra[match_len]);

      // This sequence coaxes MSVC into using cmov's vs. jmp's.
      s0 = s_tdefl_small_dist_sym[match_dist & 511];
      n0 = s_tdefl_small_dist_extra[match_dist & 511];
      s1 = s_tdefl_large_dist_sym[match_dist >> 8];
      n1 = s_tdefl_large_dist_extra[match_dist >> 8];
      sym = (match_dist < 512) ? s0 : s1;
      num_extra_bits = (match_dist < 512) ? n0 : n1;

      MZ_ASSERT(d->m_huff_code_sizes[1][sym]);
      TDEFL_PUT_BITS_FAST(d->m_huff_codes[1][sym], d->m_huff_code_sizes[1][sym]);
      TDEFL_PUT_BITS_FAST(match_dist & mz_bitmasks[num_extra_bits], num_extra_bits);
    }
    else
    {
      mz_uint lit = *pLZ_codes++;
      MZ_ASSERT(d->m_huff_code_sizes[0][lit]);
      TDEFL_PUT_BITS_FAST(d->m_huff_codes[0][lit], d->m_huff_code_sizes[0][lit]);

      if (((flags & 2) == 0) && (pLZ_codes < pLZ_code_buf_end))
      {
        flags >>= 1;
        lit = *pLZ_codes++;
        MZ_ASSERT(d->m_huff_code_sizes[0][lit]);
        TDEFL_PUT_BITS_FAST(d->m_huff_codes[0][lit], d->m_huff_code_sizes[0][lit]);

        if (((flags & 2) == 0) && (pLZ_codes < pLZ_code_buf_end))
        {
          flags >>= 1;
          lit = *pLZ_codes++;
          MZ_ASSERT(d->m_huff_code_sizes[0][lit]);
          TDEFL_PUT_BITS_FAST(d->m_huff_codes[0][lit], d->m_huff_code_sizes[0][lit]);
        }
      }
    }

    if (pOutput_buf >= d->m_pOutput_buf_end)
      return MZ_FALSE;

    *(mz_uint64*)pOutput_buf = bit_buffer;
    pOutput_buf += (bits_in >> 3);
    bit_buffer >>= (bits_in & ~7);
    bits_in &= 7;
  }

#undef TDEFL_PUT_BITS_FAST

  d->m_pOutput_buf = pOutput_buf;
  d->m_bits_in = 0;
  d->m_bit_buffer = 0;

  while (bits_in)
  {
    mz_uint32 n = MZ_MIN(bits_in, 16);
    TDEFL_PUT_BITS((mz_uint)bit_buffer & mz_bitmasks[n], n);
    bit_buffer >>= n;
    bits_in -= n;
  }

  TDEFL_PUT_BITS(d->m_huff_codes[0][256], d->m_huff_code_sizes[0][256]);

  return (d->m_pOutput_buf < d->m_pOutput_buf_end);
}
#else
static mz_bool tdefl_compress_lz_codes(tdefl_compressor *d)
{
  mz_uint flags;
  mz_uint8 *pLZ_codes;

  flags = 1;
  for (pLZ_codes = d->m_lz_code_buf; pLZ_codes < d->m_pLZ_code_buf; flags >>= 1)
  {
    if (flags == 1)
      flags = *pLZ_codes++ | 0x100;
    if (flags & 1)
    {
      mz_uint sym, num_extra_bits;
      mz_uint match_len = pLZ_codes[0], match_dist = (pLZ_codes[1] | (pLZ_codes[2] << 8)); pLZ_codes += 3;

      MZ_ASSERT(d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]);
      TDEFL_PUT_BITS(d->m_huff_codes[0][s_tdefl_len_sym[match_len]], d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]);
      TDEFL_PUT_BITS(match_len & mz_bitmasks[s_tdefl_len_extra[match_len]], s_tdefl_len_extra[match_len]);

      if (match_dist < 512)
      {
        sym = s_tdefl_small_dist_sym[match_dist]; num_extra_bits = s_tdefl_small_dist_extra[match_dist];
      }
      else
      {
        sym = s_tdefl_large_dist_sym[match_dist >> 8]; num_extra_bits = s_tdefl_large_dist_extra[match_dist >> 8];
      }
      MZ_ASSERT(d->m_huff_code_sizes[1][sym]);
      TDEFL_PUT_BITS(d->m_huff_codes[1][sym], d->m_huff_code_sizes[1][sym]);
      TDEFL_PUT_BITS(match_dist & mz_bitmasks[num_extra_bits], num_extra_bits);
    }
    else
    {
      mz_uint lit = *pLZ_codes++;
      MZ_ASSERT(d->m_huff_code_sizes[0][lit]);
      TDEFL_PUT_BITS(d->m_huff_codes[0][lit], d->m_huff_code_sizes[0][lit]);
    }
  }

  TDEFL_PUT_BITS(d->m_huff_codes[0][256], d->m_huff_code_sizes[0][256]);

  return (d->m_pOutput_buf < d->m_pOutput_buf_end);
}
#endif // MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN && MINIZ_HAS_64BIT_REGISTERS

static mz_bool tdefl_compress_block(tdefl_compressor *d, mz_bool static_block)
{
  if (static_block)
    tdefl_start_static_block(d);
  else
    tdefl_start_dynamic_block(d);
  return tdefl_compress_lz_codes(d);
}

static int tdefl_flush_block(tdefl_compressor *d, int flush)
{
  mz_uint saved_bit_buf, saved_bits_in;
  mz_uint8 *pSaved_output_buf;
  mz_bool comp_block_succeeded = MZ_FALSE;
  int n, use_raw_block = ((d->m_flags & TDEFL_FORCE_ALL_RAW_BLOCKS) != 0) && (d->m_lookahead_pos - d->m_lz_code_buf_dict_pos) <= d->m_dict_size;
  mz_uint8 *pOutput_buf_start = ((d->m_pPut_buf_func == NULL) && ((*d->m_pOut_buf_size - d->m_out_buf_ofs) >= TDEFL_OUT_BUF_SIZE)) ? ((mz_uint8 *)d->m_pOut_buf + d->m_out_buf_ofs) : d->m_output_buf;

  d->m_pOutput_buf = pOutput_buf_start;
  d->m_pOutput_buf_end = d->m_pOutput_buf + TDEFL_OUT_BUF_SIZE - 16;

  MZ_ASSERT(!d->m_output_flush_remaining);
  d->m_output_flush_ofs = 0;
  d->m_output_flush_remaining = 0;

  *d->m_pLZ_flags = (mz_uint8)(*d->m_pLZ_flags >> d->m_num_flags_left);
  d->m_pLZ_code_buf -= (d->m_num_flags_left == 8);

  if ((d->m_flags & TDEFL_WRITE_ZLIB_HEADER) && (!d->m_block_index))
  {
    TDEFL_PUT_BITS(0x78, 8); TDEFL_PUT_BITS(0x01, 8);
  }

  TDEFL_PUT_BITS(flush == TDEFL_FINISH, 1);

  pSaved_output_buf = d->m_pOutput_buf; saved_bit_buf = d->m_bit_buffer; saved_bits_in = d->m_bits_in;

  if (!use_raw_block)
    comp_block_succeeded = tdefl_compress_block(d, (d->m_flags & TDEFL_FORCE_ALL_STATIC_BLOCKS) || (d->m_total_lz_bytes < 48));

  // If the block gets expanded, forget the current contents of the output buffer and send a raw block instead.
  if ( ((use_raw_block) || ((d->m_total_lz_bytes) && ((d->m_pOutput_buf - pSaved_output_buf + 1U) >= d->m_total_lz_bytes))) &&
       ((d->m_lookahead_pos - d->m_lz_code_buf_dict_pos) <= d->m_dict_size) )
  {
    mz_uint i; d->m_pOutput_buf = pSaved_output_buf; d->m_bit_buffer = saved_bit_buf, d->m_bits_in = saved_bits_in;
    TDEFL_PUT_BITS(0, 2);
    if (d->m_bits_in) { TDEFL_PUT_BITS(0, 8 - d->m_bits_in); }
    for (i = 2; i; --i, d->m_total_lz_bytes ^= 0xFFFF)
    {
      TDEFL_PUT_BITS(d->m_total_lz_bytes & 0xFFFF, 16);
    }
    for (i = 0; i < d->m_total_lz_bytes; ++i)
    {
      TDEFL_PUT_BITS(d->m_dict[(d->m_lz_code_buf_dict_pos + i) & TDEFL_LZ_DICT_SIZE_MASK], 8);
    }
  }
  // Check for the extremely unlikely (if not impossible) case of the compressed block not fitting into the output buffer when using dynamic codes.
  else if (!comp_block_succeeded)
  {
    d->m_pOutput_buf = pSaved_output_buf; d->m_bit_buffer = saved_bit_buf, d->m_bits_in = saved_bits_in;
    tdefl_compress_block(d, MZ_TRUE);
  }

  if (flush)
  {
    if (flush == TDEFL_FINISH)
    {
      if (d->m_bits_in) { TDEFL_PUT_BITS(0, 8 - d->m_bits_in); }
      if (d->m_flags & TDEFL_WRITE_ZLIB_HEADER) { mz_uint i, a = d->m_adler32; for (i = 0; i < 4; i++) { TDEFL_PUT_BITS((a >> 24) & 0xFF, 8); a <<= 8; } }
    }
    else
    {
      mz_uint i, z = 0; TDEFL_PUT_BITS(0, 3); if (d->m_bits_in) { TDEFL_PUT_BITS(0, 8 - d->m_bits_in); } for (i = 2; i; --i, z ^= 0xFFFF) { TDEFL_PUT_BITS(z & 0xFFFF, 16); }
    }
  }

  MZ_ASSERT(d->m_pOutput_buf < d->m_pOutput_buf_end);

  memset(&d->m_huff_count[0][0], 0, sizeof(d->m_huff_count[0][0]) * TDEFL_MAX_HUFF_SYMBOLS_0);
  memset(&d->m_huff_count[1][0], 0, sizeof(d->m_huff_count[1][0]) * TDEFL_MAX_HUFF_SYMBOLS_1);

  d->m_pLZ_code_buf = d->m_lz_code_buf + 1; d->m_pLZ_flags = d->m_lz_code_buf; d->m_num_flags_left = 8; d->m_lz_code_buf_dict_pos += d->m_total_lz_bytes; d->m_total_lz_bytes = 0; d->m_block_index++;

  if ((n = (int)(d->m_pOutput_buf - pOutput_buf_start)) != 0)
  {
    if (d->m_pPut_buf_func)
    {
      *d->m_pIn_buf_size = d->m_pSrc - (const mz_uint8 *)d->m_pIn_buf;
      if (!(*d->m_pPut_buf_func)(d->m_output_buf, n, d->m_pPut_buf_user))
        return (d->m_prev_return_status = TDEFL_STATUS_PUT_BUF_FAILED);
    }
    else if (pOutput_buf_start == d->m_output_buf)
    {
      int bytes_to_copy = (int)MZ_MIN((size_t)n, (size_t)(*d->m_pOut_buf_size - d->m_out_buf_ofs));
      memcpy((mz_uint8 *)d->m_pOut_buf + d->m_out_buf_ofs, d->m_output_buf, bytes_to_copy);
      d->m_out_buf_ofs += bytes_to_copy;
      if ((n -= bytes_to_copy) != 0)
      {
        d->m_output_flush_ofs = bytes_to_copy;
        d->m_output_flush_remaining = n;
      }
    }
    else
    {
      d->m_out_buf_ofs += n;
    }
  }

  return d->m_output_flush_remaining;
}

#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES
/*#define TDEFL_READ_UNALIGNED_WORD(p) *(const mz_uint16*)(p)*/
#define TDEFL_READ_UNALIGNED_WORD(p)  ({ \
  mz_uint16 w; \
  memcpy(&w, (p), 2); \
  w; \
})

static MZ_FORCEINLINE void tdefl_find_match(tdefl_compressor *d, mz_uint lookahead_pos, mz_uint max_dist, mz_uint max_match_len, mz_uint *pMatch_dist, mz_uint *pMatch_len)
{
  mz_uint dist, pos = lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK, match_len = *pMatch_len, probe_pos = pos, next_probe_pos, probe_len;
  mz_uint num_probes_left = d->m_max_probes[match_len >= 32];
  const mz_uint16 *s = (const mz_uint16*)(d->m_dict + pos), *p, *q;
  mz_uint16 c01 = TDEFL_READ_UNALIGNED_WORD(&d->m_dict[pos + match_len - 1]), s01 = TDEFL_READ_UNALIGNED_WORD(s);
  MZ_ASSERT(max_match_len <= TDEFL_MAX_MATCH_LEN); if (max_match_len <= match_len) return;
  for ( ; ; )
  {
    for ( ; ; )
    {
      if (--num_probes_left == 0) return;
      #define TDEFL_PROBE \
        next_probe_pos = d->m_next[probe_pos]; \
        if ((!next_probe_pos) || ((dist = (mz_uint16)(lookahead_pos - next_probe_pos)) > max_dist)) return; \
        probe_pos = next_probe_pos & TDEFL_LZ_DICT_SIZE_MASK; \
        if (TDEFL_READ_UNALIGNED_WORD(&d->m_dict[probe_pos + match_len - 1]) == c01) break;
      TDEFL_PROBE; TDEFL_PROBE; TDEFL_PROBE;
    }
    if (!dist) break;
    q = (const mz_uint16*)(d->m_dict + probe_pos);
    if (TDEFL_READ_UNALIGNED_WORD(q) != s01) continue;
    p = s; probe_len = 32;
    do { } while ( (TDEFL_READ_UNALIGNED_WORD(++p) == TDEFL_READ_UNALIGNED_WORD(++q)) && (TDEFL_READ_UNALIGNED_WORD(++p) == TDEFL_READ_UNALIGNED_WORD(++q)) &&
                   (TDEFL_READ_UNALIGNED_WORD(++p) == TDEFL_READ_UNALIGNED_WORD(++q)) && (TDEFL_READ_UNALIGNED_WORD(++p) == TDEFL_READ_UNALIGNED_WORD(++q)) && (--probe_len > 0) );
    if (!probe_len)
    {
      *pMatch_dist = dist; *pMatch_len = MZ_MIN(max_match_len, TDEFL_MAX_MATCH_LEN); break;
    }
    else if ((probe_len = ((mz_uint)(p - s) * 2) + (mz_uint)(*(const mz_uint8*)p == *(const mz_uint8*)q)) > match_len)
    {
      *pMatch_dist = dist; if ((*pMatch_len = match_len = MZ_MIN(max_match_len, probe_len)) == max_match_len) break;
      c01 = TDEFL_READ_UNALIGNED_WORD(&d->m_dict[pos + match_len - 1]);
    }
  }
}
#else
static MZ_FORCEINLINE void tdefl_find_match(tdefl_compressor *d, mz_uint lookahead_pos, mz_uint max_dist, mz_uint max_match_len, mz_uint *pMatch_dist, mz_uint *pMatch_len)
{
  mz_uint dist, pos = lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK, match_len = *pMatch_len, probe_pos = pos, next_probe_pos, probe_len;
  mz_uint num_probes_left = d->m_max_probes[match_len >= 32];
  const mz_uint8 *s = d->m_dict + pos, *p, *q;
  mz_uint8 c0 = d->m_dict[pos + match_len], c1 = d->m_dict[pos + match_len - 1];
  MZ_ASSERT(max_match_len <= TDEFL_MAX_MATCH_LEN); if (max_match_len <= match_len) return;
  for ( ; ; )
  {
    for ( ; ; )
    {
      if (--num_probes_left == 0) return;
      #define TDEFL_PROBE \
        next_probe_pos = d->m_next[probe_pos]; \
        if ((!next_probe_pos) || ((dist = (mz_uint16)(lookahead_pos - next_probe_pos)) > max_dist)) return; \
        probe_pos = next_probe_pos & TDEFL_LZ_DICT_SIZE_MASK; \
        if ((d->m_dict[probe_pos + match_len] == c0) && (d->m_dict[probe_pos + match_len - 1] == c1)) break;
      TDEFL_PROBE; TDEFL_PROBE; TDEFL_PROBE;
    }
    if (!dist) break; p = s; q = d->m_dict + probe_pos; for (probe_len = 0; probe_len < max_match_len; probe_len++) if (*p++ != *q++) break;
    if (probe_len > match_len)
    {
      *pMatch_dist = dist; if ((*pMatch_len = match_len = probe_len) == max_match_len) return;
      c0 = d->m_dict[pos + match_len]; c1 = d->m_dict[pos + match_len - 1];
    }
  }
}
#endif // #if MINIZ_USE_UNALIGNED_LOADS_AND_STORES

#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN
static mz_bool tdefl_compress_fast(tdefl_compressor *d)
{
  // Faster, minimally featured LZRW1-style match+parse loop with better register utilization. Intended for applications where raw throughput is valued more highly than ratio.
  mz_uint lookahead_pos = d->m_lookahead_pos, lookahead_size = d->m_lookahead_size, dict_size = d->m_dict_size, total_lz_bytes = d->m_total_lz_bytes, num_flags_left = d->m_num_flags_left;
  mz_uint8 *pLZ_code_buf = d->m_pLZ_code_buf, *pLZ_flags = d->m_pLZ_flags;
  mz_uint cur_pos = lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK;

  while ((d->m_src_buf_left) || ((d->m_flush) && (lookahead_size)))
  {
    const mz_uint TDEFL_COMP_FAST_LOOKAHEAD_SIZE = 4096;
    mz_uint dst_pos = (lookahead_pos + lookahead_size) & TDEFL_LZ_DICT_SIZE_MASK;
    mz_uint num_bytes_to_process = (mz_uint)MZ_MIN(d->m_src_buf_left, TDEFL_COMP_FAST_LOOKAHEAD_SIZE - lookahead_size);
    d->m_src_buf_left -= num_bytes_to_process;
    lookahead_size += num_bytes_to_process;

    while (num_bytes_to_process)
    {
      mz_uint32 n = MZ_MIN(TDEFL_LZ_DICT_SIZE - dst_pos, num_bytes_to_process);
      memcpy(d->m_dict + dst_pos, d->m_pSrc, n);
      if (dst_pos < (TDEFL_MAX_MATCH_LEN - 1))
        memcpy(d->m_dict + TDEFL_LZ_DICT_SIZE + dst_pos, d->m_pSrc, MZ_MIN(n, (TDEFL_MAX_MATCH_LEN - 1) - dst_pos));
      d->m_pSrc += n;
      dst_pos = (dst_pos + n) & TDEFL_LZ_DICT_SIZE_MASK;
      num_bytes_to_process -= n;
    }

    dict_size = MZ_MIN(TDEFL_LZ_DICT_SIZE - lookahead_size, dict_size);
    if ((!d->m_flush) && (lookahead_size < TDEFL_COMP_FAST_LOOKAHEAD_SIZE)) break;

    while (lookahead_size >= 4)
    {
      int k8_cond;
      mz_uint cur_match_dist, cur_match_len = 1;
      mz_uint8 *pCur_dict = d->m_dict + cur_pos;
      mz_uint first_trigram = (*(const mz_uint32 *)pCur_dict) & 0xFFFFFF;
      mz_uint hash = (first_trigram ^ (first_trigram >> (24 - (TDEFL_LZ_HASH_BITS - 8)))) & TDEFL_LEVEL1_HASH_SIZE_MASK;
      mz_uint probe_pos = d->m_hash[hash];
      d->m_hash[hash] = (mz_uint16)lookahead_pos;

      if ((cur_match_dist = (mz_uint16)(lookahead_pos - probe_pos)) <= dict_size) {
        mz_uint32 dw;
        probe_pos &= TDEFL_LZ_DICT_SIZE_MASK;
        memcpy(&dw, d->m_dict + probe_pos, 4);
        k8_cond = ((dw & 0xFFFFFF) == first_trigram);
      } else {
        k8_cond = 0;
      }

      if (k8_cond)
      {
        const mz_uint16 *p = (const mz_uint16 *)pCur_dict;
        const mz_uint16 *q = (const mz_uint16 *)(d->m_dict + probe_pos);
        mz_uint32 probe_len = 32;
        do { } while ( (TDEFL_READ_UNALIGNED_WORD(++p) == TDEFL_READ_UNALIGNED_WORD(++q)) && (TDEFL_READ_UNALIGNED_WORD(++p) == TDEFL_READ_UNALIGNED_WORD(++q)) &&
          (TDEFL_READ_UNALIGNED_WORD(++p) == TDEFL_READ_UNALIGNED_WORD(++q)) && (TDEFL_READ_UNALIGNED_WORD(++p) == TDEFL_READ_UNALIGNED_WORD(++q)) && (--probe_len > 0) );
        cur_match_len = ((mz_uint)(p - (const mz_uint16 *)pCur_dict) * 2) + (mz_uint)(*(const mz_uint8 *)p == *(const mz_uint8 *)q);
        if (!probe_len)
          cur_match_len = cur_match_dist ? TDEFL_MAX_MATCH_LEN : 0;

        if ((cur_match_len < TDEFL_MIN_MATCH_LEN) || ((cur_match_len == TDEFL_MIN_MATCH_LEN) && (cur_match_dist >= 8U*1024U)))
        {
          cur_match_len = 1;
          *pLZ_code_buf++ = (mz_uint8)first_trigram;
          *pLZ_flags = (mz_uint8)(*pLZ_flags >> 1);
          d->m_huff_count[0][(mz_uint8)first_trigram]++;
        }
        else
        {
          mz_uint32 s0, s1;
          cur_match_len = MZ_MIN(cur_match_len, lookahead_size);

          MZ_ASSERT((cur_match_len >= TDEFL_MIN_MATCH_LEN) && (cur_match_dist >= 1) && (cur_match_dist <= TDEFL_LZ_DICT_SIZE));

          cur_match_dist--;

          pLZ_code_buf[0] = (mz_uint8)(cur_match_len - TDEFL_MIN_MATCH_LEN);
          *(mz_uint16 *)(&pLZ_code_buf[1]) = (mz_uint16)cur_match_dist;
          pLZ_code_buf += 3;
          *pLZ_flags = (mz_uint8)((*pLZ_flags >> 1) | 0x80);

          s0 = s_tdefl_small_dist_sym[cur_match_dist & 511];
          s1 = s_tdefl_large_dist_sym[cur_match_dist >> 8];
          d->m_huff_count[1][(cur_match_dist < 512) ? s0 : s1]++;

          d->m_huff_count[0][s_tdefl_len_sym[cur_match_len - TDEFL_MIN_MATCH_LEN]]++;
        }
      }
      else
      {
        *pLZ_code_buf++ = (mz_uint8)first_trigram;
        *pLZ_flags = (mz_uint8)(*pLZ_flags >> 1);
        d->m_huff_count[0][(mz_uint8)first_trigram]++;
      }

      if (--num_flags_left == 0) { num_flags_left = 8; pLZ_flags = pLZ_code_buf++; }

      total_lz_bytes += cur_match_len;
      lookahead_pos += cur_match_len;
      dict_size = MZ_MIN(dict_size + cur_match_len, TDEFL_LZ_DICT_SIZE);
      cur_pos = (cur_pos + cur_match_len) & TDEFL_LZ_DICT_SIZE_MASK;
      MZ_ASSERT(lookahead_size >= cur_match_len);
      lookahead_size -= cur_match_len;

      if (pLZ_code_buf > &d->m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE - 8])
      {
        int n;
        d->m_lookahead_pos = lookahead_pos; d->m_lookahead_size = lookahead_size; d->m_dict_size = dict_size;
        d->m_total_lz_bytes = total_lz_bytes; d->m_pLZ_code_buf = pLZ_code_buf; d->m_pLZ_flags = pLZ_flags; d->m_num_flags_left = num_flags_left;
        if ((n = tdefl_flush_block(d, 0)) != 0)
          return (n < 0) ? MZ_FALSE : MZ_TRUE;
        total_lz_bytes = d->m_total_lz_bytes; pLZ_code_buf = d->m_pLZ_code_buf; pLZ_flags = d->m_pLZ_flags; num_flags_left = d->m_num_flags_left;
      }
    }

    while (lookahead_size)
    {
      mz_uint8 lit = d->m_dict[cur_pos];

      total_lz_bytes++;
      *pLZ_code_buf++ = lit;
      *pLZ_flags = (mz_uint8)(*pLZ_flags >> 1);
      if (--num_flags_left == 0) { num_flags_left = 8; pLZ_flags = pLZ_code_buf++; }

      d->m_huff_count[0][lit]++;

      lookahead_pos++;
      dict_size = MZ_MIN(dict_size + 1, TDEFL_LZ_DICT_SIZE);
      cur_pos = (cur_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK;
      lookahead_size--;

      if (pLZ_code_buf > &d->m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE - 8])
      {
        int n;
        d->m_lookahead_pos = lookahead_pos; d->m_lookahead_size = lookahead_size; d->m_dict_size = dict_size;
        d->m_total_lz_bytes = total_lz_bytes; d->m_pLZ_code_buf = pLZ_code_buf; d->m_pLZ_flags = pLZ_flags; d->m_num_flags_left = num_flags_left;
        if ((n = tdefl_flush_block(d, 0)) != 0)
          return (n < 0) ? MZ_FALSE : MZ_TRUE;
        total_lz_bytes = d->m_total_lz_bytes; pLZ_code_buf = d->m_pLZ_code_buf; pLZ_flags = d->m_pLZ_flags; num_flags_left = d->m_num_flags_left;
      }
    }
  }

  d->m_lookahead_pos = lookahead_pos; d->m_lookahead_size = lookahead_size; d->m_dict_size = dict_size;
  d->m_total_lz_bytes = total_lz_bytes; d->m_pLZ_code_buf = pLZ_code_buf; d->m_pLZ_flags = pLZ_flags; d->m_num_flags_left = num_flags_left;
  return MZ_TRUE;
}
#endif // MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN

static MZ_FORCEINLINE void tdefl_record_literal(tdefl_compressor *d, mz_uint8 lit)
{
  d->m_total_lz_bytes++;
  *d->m_pLZ_code_buf++ = lit;
  *d->m_pLZ_flags = (mz_uint8)(*d->m_pLZ_flags >> 1); if (--d->m_num_flags_left == 0) { d->m_num_flags_left = 8; d->m_pLZ_flags = d->m_pLZ_code_buf++; }
  d->m_huff_count[0][lit]++;
}

static MZ_FORCEINLINE void tdefl_record_match(tdefl_compressor *d, mz_uint match_len, mz_uint match_dist)
{
  mz_uint32 s0, s1;

  MZ_ASSERT((match_len >= TDEFL_MIN_MATCH_LEN) && (match_dist >= 1) && (match_dist <= TDEFL_LZ_DICT_SIZE));

  d->m_total_lz_bytes += match_len;

  d->m_pLZ_code_buf[0] = (mz_uint8)(match_len - TDEFL_MIN_MATCH_LEN);

  match_dist -= 1;
  d->m_pLZ_code_buf[1] = (mz_uint8)(match_dist & 0xFF);
  d->m_pLZ_code_buf[2] = (mz_uint8)(match_dist >> 8); d->m_pLZ_code_buf += 3;

  *d->m_pLZ_flags = (mz_uint8)((*d->m_pLZ_flags >> 1) | 0x80); if (--d->m_num_flags_left == 0) { d->m_num_flags_left = 8; d->m_pLZ_flags = d->m_pLZ_code_buf++; }

  s0 = s_tdefl_small_dist_sym[match_dist & 511]; s1 = s_tdefl_large_dist_sym[(match_dist >> 8) & 127];
  d->m_huff_count[1][(match_dist < 512) ? s0 : s1]++;

  if (match_len >= TDEFL_MIN_MATCH_LEN) d->m_huff_count[0][s_tdefl_len_sym[match_len - TDEFL_MIN_MATCH_LEN]]++;
}

static mz_bool tdefl_compress_normal(tdefl_compressor *d)
{
  const mz_uint8 *pSrc = d->m_pSrc; size_t src_buf_left = d->m_src_buf_left;
  tdefl_flush flush = d->m_flush;

  while ((src_buf_left) || ((flush) && (d->m_lookahead_size)))
  {
    mz_uint len_to_move, cur_match_dist, cur_match_len, cur_pos;
    // Update dictionary and hash chains. Keeps the lookahead size equal to TDEFL_MAX_MATCH_LEN.
    if ((d->m_lookahead_size + d->m_dict_size) >= (TDEFL_MIN_MATCH_LEN - 1))
    {
      mz_uint dst_pos = (d->m_lookahead_pos + d->m_lookahead_size) & TDEFL_LZ_DICT_SIZE_MASK, ins_pos = d->m_lookahead_pos + d->m_lookahead_size - 2;
      mz_uint hash = (d->m_dict[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] << TDEFL_LZ_HASH_SHIFT) ^ d->m_dict[(ins_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK];
      mz_uint num_bytes_to_process = (mz_uint)MZ_MIN(src_buf_left, TDEFL_MAX_MATCH_LEN - d->m_lookahead_size);
      const mz_uint8 *pSrc_end = pSrc + num_bytes_to_process;
      src_buf_left -= num_bytes_to_process;
      d->m_lookahead_size += num_bytes_to_process;
      while (pSrc != pSrc_end)
      {
        mz_uint8 c = *pSrc++; d->m_dict[dst_pos] = c; if (dst_pos < (TDEFL_MAX_MATCH_LEN - 1)) d->m_dict[TDEFL_LZ_DICT_SIZE + dst_pos] = c;
        hash = ((hash << TDEFL_LZ_HASH_SHIFT) ^ c) & (TDEFL_LZ_HASH_SIZE - 1);
        d->m_next[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] = d->m_hash[hash]; d->m_hash[hash] = (mz_uint16)(ins_pos);
        dst_pos = (dst_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK; ins_pos++;
      }
    }
    else
    {
      while ((src_buf_left) && (d->m_lookahead_size < TDEFL_MAX_MATCH_LEN))
      {
        mz_uint8 c = *pSrc++;
        mz_uint dst_pos = (d->m_lookahead_pos + d->m_lookahead_size) & TDEFL_LZ_DICT_SIZE_MASK;
        src_buf_left--;
        d->m_dict[dst_pos] = c;
        if (dst_pos < (TDEFL_MAX_MATCH_LEN - 1))
          d->m_dict[TDEFL_LZ_DICT_SIZE + dst_pos] = c;
        if ((++d->m_lookahead_size + d->m_dict_size) >= TDEFL_MIN_MATCH_LEN)
        {
          mz_uint ins_pos = d->m_lookahead_pos + (d->m_lookahead_size - 1) - 2;
          mz_uint hash = ((d->m_dict[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] << (TDEFL_LZ_HASH_SHIFT * 2)) ^ (d->m_dict[(ins_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK] << TDEFL_LZ_HASH_SHIFT) ^ c) & (TDEFL_LZ_HASH_SIZE - 1);
          d->m_next[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] = d->m_hash[hash]; d->m_hash[hash] = (mz_uint16)(ins_pos);
        }
      }
    }
    d->m_dict_size = MZ_MIN(TDEFL_LZ_DICT_SIZE - d->m_lookahead_size, d->m_dict_size);
    if ((!flush) && (d->m_lookahead_size < TDEFL_MAX_MATCH_LEN))
      break;

    // Simple lazy/greedy parsing state machine.
    len_to_move = 1; cur_match_dist = 0; cur_match_len = d->m_saved_match_len ? d->m_saved_match_len : (TDEFL_MIN_MATCH_LEN - 1); cur_pos = d->m_lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK;
    if (d->m_flags & (TDEFL_RLE_MATCHES | TDEFL_FORCE_ALL_RAW_BLOCKS))
    {
      if ((d->m_dict_size) && (!(d->m_flags & TDEFL_FORCE_ALL_RAW_BLOCKS)))
      {
        mz_uint8 c = d->m_dict[(cur_pos - 1) & TDEFL_LZ_DICT_SIZE_MASK];
        cur_match_len = 0; while (cur_match_len < d->m_lookahead_size) { if (d->m_dict[cur_pos + cur_match_len] != c) break; cur_match_len++; }
        if (cur_match_len < TDEFL_MIN_MATCH_LEN) cur_match_len = 0; else cur_match_dist = 1;
      }
    }
    else
    {
      tdefl_find_match(d, d->m_lookahead_pos, d->m_dict_size, d->m_lookahead_size, &cur_match_dist, &cur_match_len);
    }
    if (((cur_match_len == TDEFL_MIN_MATCH_LEN) && (cur_match_dist >= 8U*1024U)) || (cur_pos == cur_match_dist) || ((d->m_flags & TDEFL_FILTER_MATCHES) && (cur_match_len <= 5)))
    {
      cur_match_dist = cur_match_len = 0;
    }
    if (d->m_saved_match_len)
    {
      if (cur_match_len > d->m_saved_match_len)
      {
        tdefl_record_literal(d, (mz_uint8)d->m_saved_lit);
        if (cur_match_len >= 128)
        {
          tdefl_record_match(d, cur_match_len, cur_match_dist);
          d->m_saved_match_len = 0; len_to_move = cur_match_len;
        }
        else
        {
          d->m_saved_lit = d->m_dict[cur_pos]; d->m_saved_match_dist = cur_match_dist; d->m_saved_match_len = cur_match_len;
        }
      }
      else
      {
        tdefl_record_match(d, d->m_saved_match_len, d->m_saved_match_dist);
        len_to_move = d->m_saved_match_len - 1; d->m_saved_match_len = 0;
      }
    }
    else if (!cur_match_dist)
      tdefl_record_literal(d, d->m_dict[MZ_MIN(cur_pos, sizeof(d->m_dict) - 1)]);
    else if ((d->m_greedy_parsing) || (d->m_flags & TDEFL_RLE_MATCHES) || (cur_match_len >= 128))
    {
      tdefl_record_match(d, cur_match_len, cur_match_dist);
      len_to_move = cur_match_len;
    }
    else
    {
      d->m_saved_lit = d->m_dict[MZ_MIN(cur_pos, sizeof(d->m_dict) - 1)]; d->m_saved_match_dist = cur_match_dist; d->m_saved_match_len = cur_match_len;
    }
    // Move the lookahead forward by len_to_move bytes.
    d->m_lookahead_pos += len_to_move;
    MZ_ASSERT(d->m_lookahead_size >= len_to_move);
    d->m_lookahead_size -= len_to_move;
    d->m_dict_size = MZ_MIN(d->m_dict_size + len_to_move, TDEFL_LZ_DICT_SIZE);
    // Check if it's time to flush the current LZ codes to the internal output buffer.
    if ( (d->m_pLZ_code_buf > &d->m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE - 8]) ||
         ( (d->m_total_lz_bytes > 31*1024) && (((((mz_uint)(d->m_pLZ_code_buf - d->m_lz_code_buf) * 115) >> 7) >= d->m_total_lz_bytes) || (d->m_flags & TDEFL_FORCE_ALL_RAW_BLOCKS))) )
    {
      int n;
      d->m_pSrc = pSrc; d->m_src_buf_left = src_buf_left;
      if ((n = tdefl_flush_block(d, 0)) != 0)
        return (n < 0) ? MZ_FALSE : MZ_TRUE;
    }
  }

  d->m_pSrc = pSrc; d->m_src_buf_left = src_buf_left;
  return MZ_TRUE;
}

static tdefl_status tdefl_flush_output_buffer(tdefl_compressor *d)
{
  if (d->m_pIn_buf_size)
  {
    *d->m_pIn_buf_size = d->m_pSrc - (const mz_uint8 *)d->m_pIn_buf;
  }

  if (d->m_pOut_buf_size)
  {
    size_t n = MZ_MIN(*d->m_pOut_buf_size - d->m_out_buf_ofs, d->m_output_flush_remaining);
    memcpy((mz_uint8 *)d->m_pOut_buf + d->m_out_buf_ofs, d->m_output_buf + d->m_output_flush_ofs, n);
    d->m_output_flush_ofs += (mz_uint)n;
    d->m_output_flush_remaining -= (mz_uint)n;
    d->m_out_buf_ofs += n;

    *d->m_pOut_buf_size = d->m_out_buf_ofs;
  }

  return (d->m_finished && !d->m_output_flush_remaining) ? TDEFL_STATUS_DONE : TDEFL_STATUS_OKAY;
}

static 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)
{
  if (!d)
  {
    if (pIn_buf_size) *pIn_buf_size = 0;
    if (pOut_buf_size) *pOut_buf_size = 0;
    return TDEFL_STATUS_BAD_PARAM;
  }

  d->m_pIn_buf = pIn_buf; d->m_pIn_buf_size = pIn_buf_size;
  d->m_pOut_buf = pOut_buf; d->m_pOut_buf_size = pOut_buf_size;
  d->m_pSrc = (const mz_uint8 *)(pIn_buf); d->m_src_buf_left = pIn_buf_size ? *pIn_buf_size : 0;
  d->m_out_buf_ofs = 0;
  d->m_flush = flush;

  if ( ((d->m_pPut_buf_func != NULL) == ((pOut_buf != NULL) || (pOut_buf_size != NULL))) || (d->m_prev_return_status != TDEFL_STATUS_OKAY) ||
        (d->m_wants_to_finish && (flush != TDEFL_FINISH)) || (pIn_buf_size && *pIn_buf_size && !pIn_buf) || (pOut_buf_size && *pOut_buf_size && !pOut_buf) )
  {
    if (pIn_buf_size) *pIn_buf_size = 0;
    if (pOut_buf_size) *pOut_buf_size = 0;
    return (d->m_prev_return_status = TDEFL_STATUS_BAD_PARAM);
  }
  d->m_wants_to_finish |= (flush == TDEFL_FINISH);

  if ((d->m_output_flush_remaining) || (d->m_finished))
    return (d->m_prev_return_status = tdefl_flush_output_buffer(d));

#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN
  if (((d->m_flags & TDEFL_MAX_PROBES_MASK) == 1) &&
      ((d->m_flags & TDEFL_GREEDY_PARSING_FLAG) != 0) &&
      ((d->m_flags & (TDEFL_FILTER_MATCHES | TDEFL_FORCE_ALL_RAW_BLOCKS | TDEFL_RLE_MATCHES)) == 0))
  {
    if (!tdefl_compress_fast(d))
      return d->m_prev_return_status;
  }
  else
#endif // #if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN
  {
    if (!tdefl_compress_normal(d))
      return d->m_prev_return_status;
  }

  if ((d->m_flags & (TDEFL_WRITE_ZLIB_HEADER | TDEFL_COMPUTE_ADLER32)) && (pIn_buf))
    d->m_adler32 = (mz_uint32)mz_adler32(d->m_adler32, (const mz_uint8 *)pIn_buf, d->m_pSrc - (const mz_uint8 *)pIn_buf);

  if ((flush) && (!d->m_lookahead_size) && (!d->m_src_buf_left) && (!d->m_output_flush_remaining))
  {
    if (tdefl_flush_block(d, flush) < 0)
      return d->m_prev_return_status;
    d->m_finished = (flush == TDEFL_FINISH);
    if (flush == TDEFL_FULL_FLUSH) { MZ_CLEAR_OBJ(d->m_hash); MZ_CLEAR_OBJ(d->m_next); d->m_dict_size = 0; }
  }

  return (d->m_prev_return_status = tdefl_flush_output_buffer(d));
}

static tdefl_status tdefl_init(tdefl_compressor *d, tdefl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags)
{
  d->m_pPut_buf_func = pPut_buf_func; d->m_pPut_buf_user = pPut_buf_user;
  d->m_flags = (mz_uint)(flags); d->m_max_probes[0] = 1 + ((flags & 0xFFF) + 2) / 3; d->m_greedy_parsing = (flags & TDEFL_GREEDY_PARSING_FLAG) != 0;
  d->m_max_probes[1] = 1 + (((flags & 0xFFF) >> 2) + 2) / 3;
  if (!(flags & TDEFL_NONDETERMINISTIC_PARSING_FLAG)) MZ_CLEAR_OBJ(d->m_hash);
  d->m_lookahead_pos = d->m_lookahead_size = d->m_dict_size = d->m_total_lz_bytes = d->m_lz_code_buf_dict_pos = d->m_bits_in = 0;
  d->m_output_flush_ofs = d->m_output_flush_remaining = d->m_finished = d->m_block_index = d->m_bit_buffer = d->m_wants_to_finish = 0;
  d->m_pLZ_code_buf = d->m_lz_code_buf + 1; d->m_pLZ_flags = d->m_lz_code_buf; d->m_num_flags_left = 8;
  d->m_pOutput_buf = d->m_output_buf; d->m_pOutput_buf_end = d->m_output_buf; d->m_prev_return_status = TDEFL_STATUS_OKAY;
  d->m_saved_match_dist = d->m_saved_match_len = d->m_saved_lit = 0; d->m_adler32 = 1;
  d->m_pIn_buf = NULL; d->m_pOut_buf = NULL;
  d->m_pIn_buf_size = NULL; d->m_pOut_buf_size = NULL;
  d->m_flush = TDEFL_NO_FLUSH; d->m_pSrc = NULL; d->m_src_buf_left = 0; d->m_out_buf_ofs = 0;
  memset(&d->m_huff_count[0][0], 0, sizeof(d->m_huff_count[0][0]) * TDEFL_MAX_HUFF_SYMBOLS_0);
  memset(&d->m_huff_count[1][0], 0, sizeof(d->m_huff_count[1][0]) * TDEFL_MAX_HUFF_SYMBOLS_1);
  return TDEFL_STATUS_OKAY;
}

static mz_uint32 tdefl_get_adler32(tdefl_compressor *d)
{
  return d->m_adler32;
}

typedef struct
{
  size_t m_size, m_capacity;
  mz_uint8 *m_pBuf;
  mz_bool m_expandable;
} tdefl_output_buffer;

#ifndef MINIZ_NO_ZLIB_APIS
static const mz_uint s_tdefl_num_probes[11] = { 0, 1, 6, 32,  16, 32, 128, 256,  512, 768, 1500 };

// level may actually range from [0,10] (10 is a "hidden" max level, where we want a bit more compression and it's fine if throughput to fall off a cliff on some files).
static mz_uint tdefl_create_comp_flags_from_zip_params(int level, int window_bits, int strategy)
{
  mz_uint comp_flags = s_tdefl_num_probes[(level >= 0) ? MZ_MIN(10, level) : MZ_DEFAULT_LEVEL] | ((level <= 3) ? TDEFL_GREEDY_PARSING_FLAG : 0);
  if (window_bits > 0) comp_flags |= TDEFL_WRITE_ZLIB_HEADER;

  if (!level) comp_flags |= TDEFL_FORCE_ALL_RAW_BLOCKS;
  else if (strategy == MZ_FILTERED) comp_flags |= TDEFL_FILTER_MATCHES;
  else if (strategy == MZ_HUFFMAN_ONLY) comp_flags &= ~TDEFL_MAX_PROBES_MASK;
  else if (strategy == MZ_FIXED) comp_flags |= TDEFL_FORCE_ALL_STATIC_BLOCKS;
  else if (strategy == MZ_RLE) comp_flags |= TDEFL_RLE_MATCHES;

  return comp_flags;
}
#endif //MINIZ_NO_ZLIB_APIS


#ifdef __cplusplus
}
#endif

#endif // MINIZ_HEADER_FILE_ONLY

/*
  This is free and unencumbered software released into the public domain.

  Anyone is free to copy, modify, publish, use, compile, sell, or
  distribute this software, either in source code form or as a compiled
  binary, for any purpose, commercial or non-commercial, and by any
  means.

  In jurisdictions that recognize copyright laws, the author or authors
  of this software dedicate any and all copyright interest in the
  software to the public domain. We make this dedication for the benefit
  of the public at large and to the detriment of our heirs and
  successors. We intend this dedication to be an overt act of
  relinquishment in perpetuity of all present and future rights to this
  software under copyright law.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  OTHER DEALINGS IN THE SOFTWARE.

  For more information, please refer to <http://unlicense.org/>
*/
