1 // Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef MINIZ_HEADER_INCLUDED 16 #define MINIZ_HEADER_INCLUDED 17 18 #include <stdlib.h> 19 20 // Defines to completely disable specific portions of miniz.c: 21 // If all macros here are defined the only functionality remaining will be CRC-32, adler-32, tinfl, and tdefl. 22 23 // Define MINIZ_NO_STDIO to disable all usage and any functions which rely on stdio for file I/O. 24 #define MINIZ_NO_STDIO 25 26 // If MINIZ_NO_TIME is specified then the ZIP archive functions will not be able to get the current time, or 27 // get/set file times, and the C run-time funcs that get/set times won't be called. 28 // The current downside is the times written to your archives will be from 1979. 29 #define MINIZ_NO_TIME 30 31 // Define MINIZ_NO_ARCHIVE_APIS to disable all ZIP archive API's. 32 #define MINIZ_NO_ARCHIVE_APIS 33 34 // Define MINIZ_NO_ARCHIVE_APIS to disable all writing related ZIP archive API's. 35 #define MINIZ_NO_ARCHIVE_WRITING_APIS 36 37 // Define MINIZ_NO_ZLIB_APIS to remove all ZLIB-style compression/decompression API's. 38 #define MINIZ_NO_ZLIB_APIS 39 40 // Define MINIZ_NO_ZLIB_COMPATIBLE_NAME to disable zlib names, to prevent conflicts against stock zlib. 41 #define MINIZ_NO_ZLIB_COMPATIBLE_NAMES 42 43 // Define MINIZ_NO_MALLOC to disable all calls to malloc, free, and realloc. 44 // Note if MINIZ_NO_MALLOC is defined then the user must always provide custom user alloc/free/realloc 45 // callbacks to the zlib and archive API's, and a few stand-alone helper API's which don't provide custom user 46 // functions (such as tdefl_compress_mem_to_heap() and tinfl_decompress_mem_to_heap()) won't work. 47 #define MINIZ_NO_MALLOC 48 49 #if defined(__TINYC__) && (defined(__linux) || defined(__linux__)) 50 // TODO: Work around "error: include file 'sys\utime.h' when compiling with tcc on Linux 51 #define MINIZ_NO_TIME 52 #endif 53 54 #if !defined(MINIZ_NO_TIME) && !defined(MINIZ_NO_ARCHIVE_APIS) 55 #include <time.h> 56 #endif 57 58 //Hardcoded options for Xtensa - JD 59 #define MINIZ_X86_OR_X64_CPU 0 60 #define MINIZ_LITTLE_ENDIAN 1 61 #define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 0 62 #define MINIZ_HAS_64BIT_REGISTERS 0 63 #define TINFL_USE_64BIT_BITBUF 0 64 65 66 #if defined(_M_IX86) || defined(_M_X64) || defined(__i386__) || defined(__i386) || defined(__i486__) || defined(__i486) || defined(i386) || defined(__ia64__) || defined(__x86_64__) 67 // MINIZ_X86_OR_X64_CPU is only used to help set the below macros. 68 #define MINIZ_X86_OR_X64_CPU 1 69 #endif 70 71 #if (__BYTE_ORDER__==__ORDER_LITTLE_ENDIAN__) || MINIZ_X86_OR_X64_CPU 72 // Set MINIZ_LITTLE_ENDIAN to 1 if the processor is little endian. 73 #define MINIZ_LITTLE_ENDIAN 1 74 #endif 75 76 #if MINIZ_X86_OR_X64_CPU 77 // Set MINIZ_USE_UNALIGNED_LOADS_AND_STORES to 1 on CPU's that permit efficient integer loads and stores from unaligned addresses. 78 #define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 1 79 #endif 80 81 #if defined(_M_X64) || defined(_WIN64) || defined(__MINGW64__) || defined(_LP64) || defined(__LP64__) || defined(__ia64__) || defined(__x86_64__) 82 // 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). 83 #define MINIZ_HAS_64BIT_REGISTERS 1 84 #endif 85 86 #ifdef __cplusplus 87 extern "C" { 88 #endif 89 90 // ------------------- zlib-style API Definitions. 91 92 // 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! 93 typedef unsigned long mz_ulong; 94 95 // mz_free() internally uses the MZ_FREE() macro (which by default calls free() unless you've modified the MZ_MALLOC macro) to release a block allocated from the heap. 96 void mz_free(void *p); 97 98 #define MZ_ADLER32_INIT (1) 99 // mz_adler32() returns the initial adler-32 value to use when called with ptr==NULL. 100 mz_ulong mz_adler32(mz_ulong adler, const unsigned char *ptr, size_t buf_len); 101 102 #define MZ_CRC32_INIT (0) 103 // mz_crc32() returns the initial CRC-32 value to use when called with ptr==NULL. 104 mz_ulong mz_crc32(mz_ulong crc, const unsigned char *ptr, size_t buf_len); 105 106 // Compression strategies. 107 enum { MZ_DEFAULT_STRATEGY = 0, MZ_FILTERED = 1, MZ_HUFFMAN_ONLY = 2, MZ_RLE = 3, MZ_FIXED = 4 }; 108 109 // Method 110 #define MZ_DEFLATED 8 111 112 #ifndef MINIZ_NO_ZLIB_APIS 113 114 // Heap allocation callbacks. 115 // Note that mz_alloc_func parameter types purpsosely differ from zlib's: items/size is size_t, not unsigned long. 116 typedef void *(*mz_alloc_func)(void *opaque, size_t items, size_t size); 117 typedef void (*mz_free_func)(void *opaque, void *address); 118 typedef void *(*mz_realloc_func)(void *opaque, void *address, size_t items, size_t size); 119 120 #define MZ_VERSION "9.1.15" 121 #define MZ_VERNUM 0x91F0 122 #define MZ_VER_MAJOR 9 123 #define MZ_VER_MINOR 1 124 #define MZ_VER_REVISION 15 125 #define MZ_VER_SUBREVISION 0 126 127 // 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). 128 enum { MZ_NO_FLUSH = 0, MZ_PARTIAL_FLUSH = 1, MZ_SYNC_FLUSH = 2, MZ_FULL_FLUSH = 3, MZ_FINISH = 4, MZ_BLOCK = 5 }; 129 130 // Return status codes. MZ_PARAM_ERROR is non-standard. 131 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 }; 132 133 // 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. 134 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 }; 135 136 // Window bits 137 #define MZ_DEFAULT_WINDOW_BITS 15 138 139 struct mz_internal_state; 140 141 // Compression/decompression stream struct. 142 typedef struct mz_stream_s 143 { 144 const unsigned char *next_in; // pointer to next byte to read 145 unsigned int avail_in; // number of bytes available at next_in 146 mz_ulong total_in; // total number of bytes consumed so far 147 148 unsigned char *next_out; // pointer to next byte to write 149 unsigned int avail_out; // number of bytes that can be written to next_out 150 mz_ulong total_out; // total number of bytes produced so far 151 152 char *msg; // error msg (unused) 153 struct mz_internal_state *state; // internal state, allocated by zalloc/zfree 154 155 mz_alloc_func zalloc; // optional heap allocation function (defaults to malloc) 156 mz_free_func zfree; // optional heap free function (defaults to free) 157 void *opaque; // heap alloc function user pointer 158 159 int data_type; // data_type (unused) 160 mz_ulong adler; // adler32 of the source or uncompressed data 161 mz_ulong reserved; // not used 162 } mz_stream; 163 164 typedef mz_stream *mz_streamp; 165 166 // Returns the version string of miniz.c. 167 const char *mz_version(void); 168 169 // mz_deflateInit() initializes a compressor with default options: 170 // Parameters: 171 // pStream must point to an initialized mz_stream struct. 172 // level must be between [MZ_NO_COMPRESSION, MZ_BEST_COMPRESSION]. 173 // level 1 enables a specially optimized compression function that's been optimized purely for performance, not ratio. 174 // (This special func. is currently only enabled when MINIZ_USE_UNALIGNED_LOADS_AND_STORES and MINIZ_LITTLE_ENDIAN are defined.) 175 // Return values: 176 // MZ_OK on success. 177 // MZ_STREAM_ERROR if the stream is bogus. 178 // MZ_PARAM_ERROR if the input parameters are bogus. 179 // MZ_MEM_ERROR on out of memory. 180 int mz_deflateInit(mz_streamp pStream, int level); 181 182 // mz_deflateInit2() is like mz_deflate(), except with more control: 183 // Additional parameters: 184 // method must be MZ_DEFLATED 185 // 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) 186 // mem_level must be between [1, 9] (it's checked but ignored by miniz.c) 187 int mz_deflateInit2(mz_streamp pStream, int level, int method, int window_bits, int mem_level, int strategy); 188 189 // Quickly resets a compressor without having to reallocate anything. Same as calling mz_deflateEnd() followed by mz_deflateInit()/mz_deflateInit2(). 190 int mz_deflateReset(mz_streamp pStream); 191 192 // mz_deflate() compresses the input to output, consuming as much of the input and producing as much output as possible. 193 // Parameters: 194 // 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. 195 // flush may be MZ_NO_FLUSH, MZ_PARTIAL_FLUSH/MZ_SYNC_FLUSH, MZ_FULL_FLUSH, or MZ_FINISH. 196 // Return values: 197 // 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). 198 // 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. 199 // MZ_STREAM_ERROR if the stream is bogus. 200 // MZ_PARAM_ERROR if one of the parameters is invalid. 201 // 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.) 202 int mz_deflate(mz_streamp pStream, int flush); 203 204 // mz_deflateEnd() deinitializes a compressor: 205 // Return values: 206 // MZ_OK on success. 207 // MZ_STREAM_ERROR if the stream is bogus. 208 int mz_deflateEnd(mz_streamp pStream); 209 210 // mz_deflateBound() returns a (very) conservative upper bound on the amount of data that could be generated by deflate(), assuming flush is set to only MZ_NO_FLUSH or MZ_FINISH. 211 mz_ulong mz_deflateBound(mz_streamp pStream, mz_ulong source_len); 212 213 // Single-call compression functions mz_compress() and mz_compress2(): 214 // Returns MZ_OK on success, or one of the error codes from mz_deflate() on failure. 215 int mz_compress(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len); 216 int mz_compress2(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len, int level); 217 218 // mz_compressBound() returns a (very) conservative upper bound on the amount of data that could be generated by calling mz_compress(). 219 mz_ulong mz_compressBound(mz_ulong source_len); 220 221 // Initializes a decompressor. 222 int mz_inflateInit(mz_streamp pStream); 223 224 // 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: 225 // window_bits must be MZ_DEFAULT_WINDOW_BITS (to parse zlib header/footer) or -MZ_DEFAULT_WINDOW_BITS (raw deflate). 226 int mz_inflateInit2(mz_streamp pStream, int window_bits); 227 228 // 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. 229 // Parameters: 230 // 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. 231 // flush may be MZ_NO_FLUSH, MZ_SYNC_FLUSH, or MZ_FINISH. 232 // 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). 233 // 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. 234 // Return values: 235 // 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. 236 // 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. 237 // MZ_STREAM_ERROR if the stream is bogus. 238 // MZ_DATA_ERROR if the deflate stream is invalid. 239 // MZ_PARAM_ERROR if one of the parameters is invalid. 240 // 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 241 // with more input data, or with more room in the output buffer (except when using single call decompression, described above). 242 int mz_inflate(mz_streamp pStream, int flush); 243 244 // Deinitializes a decompressor. 245 int mz_inflateEnd(mz_streamp pStream); 246 247 // Single-call decompression. 248 // Returns MZ_OK on success, or one of the error codes from mz_inflate() on failure. 249 int mz_uncompress(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len); 250 251 // Returns a string description of the specified error code, or NULL if the error code is invalid. 252 const char *mz_error(int err); 253 254 // Redefine zlib-compatible names to miniz equivalents, so miniz.c can be used as a drop-in replacement for the subset of zlib that miniz.c supports. 255 // Define MINIZ_NO_ZLIB_COMPATIBLE_NAMES to disable zlib-compatibility if you use zlib in the same project. 256 #ifndef MINIZ_NO_ZLIB_COMPATIBLE_NAMES 257 typedef unsigned char Byte; 258 typedef unsigned int uInt; 259 typedef mz_ulong uLong; 260 typedef Byte Bytef; 261 typedef uInt uIntf; 262 typedef char charf; 263 typedef int intf; 264 typedef void *voidpf; 265 typedef uLong uLongf; 266 typedef void *voidp; 267 typedef void *const voidpc; 268 #define Z_NULL 0 269 #define Z_NO_FLUSH MZ_NO_FLUSH 270 #define Z_PARTIAL_FLUSH MZ_PARTIAL_FLUSH 271 #define Z_SYNC_FLUSH MZ_SYNC_FLUSH 272 #define Z_FULL_FLUSH MZ_FULL_FLUSH 273 #define Z_FINISH MZ_FINISH 274 #define Z_BLOCK MZ_BLOCK 275 #define Z_OK MZ_OK 276 #define Z_STREAM_END MZ_STREAM_END 277 #define Z_NEED_DICT MZ_NEED_DICT 278 #define Z_ERRNO MZ_ERRNO 279 #define Z_STREAM_ERROR MZ_STREAM_ERROR 280 #define Z_DATA_ERROR MZ_DATA_ERROR 281 #define Z_MEM_ERROR MZ_MEM_ERROR 282 #define Z_BUF_ERROR MZ_BUF_ERROR 283 #define Z_VERSION_ERROR MZ_VERSION_ERROR 284 #define Z_PARAM_ERROR MZ_PARAM_ERROR 285 #define Z_NO_COMPRESSION MZ_NO_COMPRESSION 286 #define Z_BEST_SPEED MZ_BEST_SPEED 287 #define Z_BEST_COMPRESSION MZ_BEST_COMPRESSION 288 #define Z_DEFAULT_COMPRESSION MZ_DEFAULT_COMPRESSION 289 #define Z_DEFAULT_STRATEGY MZ_DEFAULT_STRATEGY 290 #define Z_FILTERED MZ_FILTERED 291 #define Z_HUFFMAN_ONLY MZ_HUFFMAN_ONLY 292 #define Z_RLE MZ_RLE 293 #define Z_FIXED MZ_FIXED 294 #define Z_DEFLATED MZ_DEFLATED 295 #define Z_DEFAULT_WINDOW_BITS MZ_DEFAULT_WINDOW_BITS 296 #define alloc_func mz_alloc_func 297 #define free_func mz_free_func 298 #define internal_state mz_internal_state 299 #define z_stream mz_stream 300 #define deflateInit mz_deflateInit 301 #define deflateInit2 mz_deflateInit2 302 #define deflateReset mz_deflateReset 303 #define deflate mz_deflate 304 #define deflateEnd mz_deflateEnd 305 #define deflateBound mz_deflateBound 306 #define compress mz_compress 307 #define compress2 mz_compress2 308 #define compressBound mz_compressBound 309 #define inflateInit mz_inflateInit 310 #define inflateInit2 mz_inflateInit2 311 #define inflate mz_inflate 312 #define inflateEnd mz_inflateEnd 313 #define uncompress mz_uncompress 314 #define crc32 mz_crc32 315 #define adler32 mz_adler32 316 #define MAX_WBITS 15 317 #define MAX_MEM_LEVEL 9 318 #define zError mz_error 319 #define ZLIB_VERSION MZ_VERSION 320 #define ZLIB_VERNUM MZ_VERNUM 321 #define ZLIB_VER_MAJOR MZ_VER_MAJOR 322 #define ZLIB_VER_MINOR MZ_VER_MINOR 323 #define ZLIB_VER_REVISION MZ_VER_REVISION 324 #define ZLIB_VER_SUBREVISION MZ_VER_SUBREVISION 325 #define zlibVersion mz_version 326 #define zlib_version mz_version() 327 #endif // #ifndef MINIZ_NO_ZLIB_COMPATIBLE_NAMES 328 329 #endif // MINIZ_NO_ZLIB_APIS 330 331 // ------------------- Types and macros 332 333 typedef unsigned char mz_uint8; 334 typedef signed short mz_int16; 335 typedef unsigned short mz_uint16; 336 typedef unsigned int mz_uint32; 337 typedef unsigned int mz_uint; 338 typedef long long mz_int64; 339 typedef unsigned long long mz_uint64; 340 typedef int mz_bool; 341 342 #define MZ_FALSE (0) 343 #define MZ_TRUE (1) 344 345 // An attempt to work around MSVC's spammy "warning C4127: conditional expression is constant" message. 346 #ifdef _MSC_VER 347 #define MZ_MACRO_END while (0, 0) 348 #else 349 #define MZ_MACRO_END while (0) 350 #endif 351 352 // ------------------- ZIP archive reading/writing 353 354 #ifndef MINIZ_NO_ARCHIVE_APIS 355 356 enum 357 { 358 MZ_ZIP_MAX_IO_BUF_SIZE = 64*1024, 359 MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE = 260, 360 MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE = 256 361 }; 362 363 typedef struct 364 { 365 mz_uint32 m_file_index; 366 mz_uint32 m_central_dir_ofs; 367 mz_uint16 m_version_made_by; 368 mz_uint16 m_version_needed; 369 mz_uint16 m_bit_flag; 370 mz_uint16 m_method; 371 #ifndef MINIZ_NO_TIME 372 time_t m_time; 373 #endif 374 mz_uint32 m_crc32; 375 mz_uint64 m_comp_size; 376 mz_uint64 m_uncomp_size; 377 mz_uint16 m_internal_attr; 378 mz_uint32 m_external_attr; 379 mz_uint64 m_local_header_ofs; 380 mz_uint32 m_comment_size; 381 char m_filename[MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE]; 382 char m_comment[MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE]; 383 } mz_zip_archive_file_stat; 384 385 typedef size_t (*mz_file_read_func)(void *pOpaque, mz_uint64 file_ofs, void *pBuf, size_t n); 386 typedef size_t (*mz_file_write_func)(void *pOpaque, mz_uint64 file_ofs, const void *pBuf, size_t n); 387 388 struct mz_zip_internal_state_tag; 389 typedef struct mz_zip_internal_state_tag mz_zip_internal_state; 390 391 typedef enum 392 { 393 MZ_ZIP_MODE_INVALID = 0, 394 MZ_ZIP_MODE_READING = 1, 395 MZ_ZIP_MODE_WRITING = 2, 396 MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED = 3 397 } mz_zip_mode; 398 399 typedef struct mz_zip_archive_tag 400 { 401 mz_uint64 m_archive_size; 402 mz_uint64 m_central_directory_file_ofs; 403 mz_uint m_total_files; 404 mz_zip_mode m_zip_mode; 405 406 mz_uint m_file_offset_alignment; 407 408 mz_alloc_func m_pAlloc; 409 mz_free_func m_pFree; 410 mz_realloc_func m_pRealloc; 411 void *m_pAlloc_opaque; 412 413 mz_file_read_func m_pRead; 414 mz_file_write_func m_pWrite; 415 void *m_pIO_opaque; 416 417 mz_zip_internal_state *m_pState; 418 419 } mz_zip_archive; 420 421 typedef enum 422 { 423 MZ_ZIP_FLAG_CASE_SENSITIVE = 0x0100, 424 MZ_ZIP_FLAG_IGNORE_PATH = 0x0200, 425 MZ_ZIP_FLAG_COMPRESSED_DATA = 0x0400, 426 MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY = 0x0800 427 } mz_zip_flags; 428 429 // ZIP archive reading 430 431 // Inits a ZIP archive reader. 432 // These functions read and validate the archive's central directory. 433 mz_bool mz_zip_reader_init(mz_zip_archive *pZip, mz_uint64 size, mz_uint32 flags); 434 mz_bool mz_zip_reader_init_mem(mz_zip_archive *pZip, const void *pMem, size_t size, mz_uint32 flags); 435 436 #ifndef MINIZ_NO_STDIO 437 mz_bool mz_zip_reader_init_file(mz_zip_archive *pZip, const char *pFilename, mz_uint32 flags); 438 #endif 439 440 // Returns the total number of files in the archive. 441 mz_uint mz_zip_reader_get_num_files(mz_zip_archive *pZip); 442 443 // Returns detailed information about an archive file entry. 444 mz_bool mz_zip_reader_file_stat(mz_zip_archive *pZip, mz_uint file_index, mz_zip_archive_file_stat *pStat); 445 446 // Determines if an archive file entry is a directory entry. 447 mz_bool mz_zip_reader_is_file_a_directory(mz_zip_archive *pZip, mz_uint file_index); 448 mz_bool mz_zip_reader_is_file_encrypted(mz_zip_archive *pZip, mz_uint file_index); 449 450 // Retrieves the filename of an archive file entry. 451 // Returns the number of bytes written to pFilename, or if filename_buf_size is 0 this function returns the number of bytes needed to fully store the filename. 452 mz_uint mz_zip_reader_get_filename(mz_zip_archive *pZip, mz_uint file_index, char *pFilename, mz_uint filename_buf_size); 453 454 // Attempts to locates a file in the archive's central directory. 455 // Valid flags: MZ_ZIP_FLAG_CASE_SENSITIVE, MZ_ZIP_FLAG_IGNORE_PATH 456 // Returns -1 if the file cannot be found. 457 int mz_zip_reader_locate_file(mz_zip_archive *pZip, const char *pName, const char *pComment, mz_uint flags); 458 459 // Extracts a archive file to a memory buffer using no memory allocation. 460 mz_bool mz_zip_reader_extract_to_mem_no_alloc(mz_zip_archive *pZip, mz_uint file_index, void *pBuf, size_t buf_size, mz_uint flags, void *pUser_read_buf, size_t user_read_buf_size); 461 mz_bool mz_zip_reader_extract_file_to_mem_no_alloc(mz_zip_archive *pZip, const char *pFilename, void *pBuf, size_t buf_size, mz_uint flags, void *pUser_read_buf, size_t user_read_buf_size); 462 463 // Extracts a archive file to a memory buffer. 464 mz_bool mz_zip_reader_extract_to_mem(mz_zip_archive *pZip, mz_uint file_index, void *pBuf, size_t buf_size, mz_uint flags); 465 mz_bool mz_zip_reader_extract_file_to_mem(mz_zip_archive *pZip, const char *pFilename, void *pBuf, size_t buf_size, mz_uint flags); 466 467 // Extracts a archive file to a dynamically allocated heap buffer. 468 void *mz_zip_reader_extract_to_heap(mz_zip_archive *pZip, mz_uint file_index, size_t *pSize, mz_uint flags); 469 void *mz_zip_reader_extract_file_to_heap(mz_zip_archive *pZip, const char *pFilename, size_t *pSize, mz_uint flags); 470 471 // Extracts a archive file using a callback function to output the file's data. 472 mz_bool mz_zip_reader_extract_to_callback(mz_zip_archive *pZip, mz_uint file_index, mz_file_write_func pCallback, void *pOpaque, mz_uint flags); 473 mz_bool mz_zip_reader_extract_file_to_callback(mz_zip_archive *pZip, const char *pFilename, mz_file_write_func pCallback, void *pOpaque, mz_uint flags); 474 475 #ifndef MINIZ_NO_STDIO 476 // Extracts a archive file to a disk file and sets its last accessed and modified times. 477 // This function only extracts files, not archive directory records. 478 mz_bool mz_zip_reader_extract_to_file(mz_zip_archive *pZip, mz_uint file_index, const char *pDst_filename, mz_uint flags); 479 mz_bool mz_zip_reader_extract_file_to_file(mz_zip_archive *pZip, const char *pArchive_filename, const char *pDst_filename, mz_uint flags); 480 #endif 481 482 // Ends archive reading, freeing all allocations, and closing the input archive file if mz_zip_reader_init_file() was used. 483 mz_bool mz_zip_reader_end(mz_zip_archive *pZip); 484 485 // ZIP archive writing 486 487 #ifndef MINIZ_NO_ARCHIVE_WRITING_APIS 488 489 // Inits a ZIP archive writer. 490 mz_bool mz_zip_writer_init(mz_zip_archive *pZip, mz_uint64 existing_size); 491 mz_bool mz_zip_writer_init_heap(mz_zip_archive *pZip, size_t size_to_reserve_at_beginning, size_t initial_allocation_size); 492 493 #ifndef MINIZ_NO_STDIO 494 mz_bool mz_zip_writer_init_file(mz_zip_archive *pZip, const char *pFilename, mz_uint64 size_to_reserve_at_beginning); 495 #endif 496 497 // Converts a ZIP archive reader object into a writer object, to allow efficient in-place file appends to occur on an existing archive. 498 // For archives opened using mz_zip_reader_init_file, pFilename must be the archive's filename so it can be reopened for writing. If the file can't be reopened, mz_zip_reader_end() will be called. 499 // For archives opened using mz_zip_reader_init_mem, the memory block must be growable using the realloc callback (which defaults to realloc unless you've overridden it). 500 // Finally, for archives opened using mz_zip_reader_init, the mz_zip_archive's user provided m_pWrite function cannot be NULL. 501 // Note: In-place archive modification is not recommended unless you know what you're doing, because if execution stops or something goes wrong before 502 // the archive is finalized the file's central directory will be hosed. 503 mz_bool mz_zip_writer_init_from_reader(mz_zip_archive *pZip, const char *pFilename); 504 505 // Adds the contents of a memory buffer to an archive. These functions record the current local time into the archive. 506 // To add a directory entry, call this method with an archive name ending in a forwardslash with empty buffer. 507 // level_and_flags - compression level (0-10, see MZ_BEST_SPEED, MZ_BEST_COMPRESSION, etc.) logically OR'd with zero or more mz_zip_flags, or just set to MZ_DEFAULT_COMPRESSION. 508 mz_bool mz_zip_writer_add_mem(mz_zip_archive *pZip, const char *pArchive_name, const void *pBuf, size_t buf_size, mz_uint level_and_flags); 509 mz_bool mz_zip_writer_add_mem_ex(mz_zip_archive *pZip, const char *pArchive_name, const void *pBuf, size_t buf_size, const void *pComment, mz_uint16 comment_size, mz_uint level_and_flags, mz_uint64 uncomp_size, mz_uint32 uncomp_crc32); 510 511 #ifndef MINIZ_NO_STDIO 512 // Adds the contents of a disk file to an archive. This function also records the disk file's modified time into the archive. 513 // level_and_flags - compression level (0-10, see MZ_BEST_SPEED, MZ_BEST_COMPRESSION, etc.) logically OR'd with zero or more mz_zip_flags, or just set to MZ_DEFAULT_COMPRESSION. 514 mz_bool mz_zip_writer_add_file(mz_zip_archive *pZip, const char *pArchive_name, const char *pSrc_filename, const void *pComment, mz_uint16 comment_size, mz_uint level_and_flags); 515 #endif 516 517 // Adds a file to an archive by fully cloning the data from another archive. 518 // This function fully clones the source file's compressed data (no recompression), along with its full filename, extra data, and comment fields. 519 mz_bool mz_zip_writer_add_from_zip_reader(mz_zip_archive *pZip, mz_zip_archive *pSource_zip, mz_uint file_index); 520 521 // Finalizes the archive by writing the central directory records followed by the end of central directory record. 522 // After an archive is finalized, the only valid call on the mz_zip_archive struct is mz_zip_writer_end(). 523 // An archive must be manually finalized by calling this function for it to be valid. 524 mz_bool mz_zip_writer_finalize_archive(mz_zip_archive *pZip); 525 mz_bool mz_zip_writer_finalize_heap_archive(mz_zip_archive *pZip, void **pBuf, size_t *pSize); 526 527 // Ends archive writing, freeing all allocations, and closing the output file if mz_zip_writer_init_file() was used. 528 // Note for the archive to be valid, it must have been finalized before ending. 529 mz_bool mz_zip_writer_end(mz_zip_archive *pZip); 530 531 // Misc. high-level helper functions: 532 533 // mz_zip_add_mem_to_archive_file_in_place() efficiently (but not atomically) appends a memory blob to a ZIP archive. 534 // level_and_flags - compression level (0-10, see MZ_BEST_SPEED, MZ_BEST_COMPRESSION, etc.) logically OR'd with zero or more mz_zip_flags, or just set to MZ_DEFAULT_COMPRESSION. 535 mz_bool mz_zip_add_mem_to_archive_file_in_place(const char *pZip_filename, const char *pArchive_name, const void *pBuf, size_t buf_size, const void *pComment, mz_uint16 comment_size, mz_uint level_and_flags); 536 537 // Reads a single file from an archive into a heap block. 538 // Returns NULL on failure. 539 // 540 // Note: Due to MINIZ_NO_MALLOC, this function will not work. 541 // 542 void *mz_zip_extract_archive_file_to_heap(const char *pZip_filename, const char *pArchive_name, size_t *pSize, mz_uint zip_flags) __attribute__((warning("miniz is compiled without malloc so this function does not work"))); 543 544 #endif // #ifndef MINIZ_NO_ARCHIVE_WRITING_APIS 545 546 #endif // #ifndef MINIZ_NO_ARCHIVE_APIS 547 548 // ------------------- Low-level Decompression API Definitions 549 550 // Decompression flags used by tinfl_decompress(). 551 // 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. 552 // 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. 553 // 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). 554 // TINFL_FLAG_COMPUTE_ADLER32: Force adler-32 checksum computation of the decompressed bytes. 555 enum 556 { 557 TINFL_FLAG_PARSE_ZLIB_HEADER = 1, 558 TINFL_FLAG_HAS_MORE_INPUT = 2, 559 TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF = 4, 560 TINFL_FLAG_COMPUTE_ADLER32 = 8 561 }; 562 563 // High level decompression functions: 564 // tinfl_decompress_mem_to_heap() decompresses a block in memory to a heap block allocated via malloc(). 565 // On entry: 566 // pSrc_buf, src_buf_len: Pointer and size of the Deflate or zlib source data to decompress. 567 // On return: 568 // Function returns a pointer to the decompressed data, or NULL on failure. 569 // *pOut_len will be set to the decompressed data's size, which could be larger than src_buf_len on uncompressible data. 570 // The caller must call mz_free() on the returned block when it's no longer needed. 571 // 572 // Note: Due to MINIZ_NO_MALLOC, this function will not work. 573 // 574 void *tinfl_decompress_mem_to_heap(const void *pSrc_buf, size_t src_buf_len, size_t *pOut_len, int flags) __attribute__((warning("miniz is compiled without malloc so this function does not work"))); 575 576 // tinfl_decompress_mem_to_mem() decompresses a block in memory to another block in memory. 577 // Returns TINFL_DECOMPRESS_MEM_TO_MEM_FAILED on failure, or the number of bytes written on success. 578 #define TINFL_DECOMPRESS_MEM_TO_MEM_FAILED ((size_t)(-1)) 579 size_t tinfl_decompress_mem_to_mem(void *pOut_buf, size_t out_buf_len, const void *pSrc_buf, size_t src_buf_len, int flags); 580 581 // tinfl_decompress_mem_to_callback() decompresses a block in memory to an internal 32KB buffer, and a user provided callback function will be called to flush the buffer. 582 // 583 // Note: Due to MINIZ_NO_MALLOC, this function will not work. 584 // 585 // Returns 1 on success or 0 or -1 on failure. 586 typedef int (*tinfl_put_buf_func_ptr)(const void* pBuf, int len, void *pUser); 587 int tinfl_decompress_mem_to_callback(const void *pIn_buf, size_t *pIn_buf_size, tinfl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags) __attribute__((warning("miniz is compiled without malloc so this function does not work")));; 588 589 struct tinfl_decompressor_tag; typedef struct tinfl_decompressor_tag tinfl_decompressor; 590 591 // Max size of LZ dictionary. 592 #define TINFL_LZ_DICT_SIZE 32768 593 594 // Return status. 595 typedef enum 596 { 597 TINFL_STATUS_BAD_PARAM = -3, 598 TINFL_STATUS_ADLER32_MISMATCH = -2, 599 TINFL_STATUS_FAILED = -1, 600 TINFL_STATUS_DONE = 0, 601 TINFL_STATUS_NEEDS_MORE_INPUT = 1, 602 TINFL_STATUS_HAS_MORE_OUTPUT = 2 603 } tinfl_status; 604 605 // Initializes the decompressor to its initial state. 606 #define tinfl_init(r) do { (r)->m_state = 0; } MZ_MACRO_END 607 #define tinfl_get_adler32(r) (r)->m_check_adler32 608 609 // 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. 610 // 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. 611 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); 612 613 // Internal/private bits follow. 614 enum 615 { 616 TINFL_MAX_HUFF_TABLES = 3, TINFL_MAX_HUFF_SYMBOLS_0 = 288, TINFL_MAX_HUFF_SYMBOLS_1 = 32, TINFL_MAX_HUFF_SYMBOLS_2 = 19, 617 TINFL_FAST_LOOKUP_BITS = 10, TINFL_FAST_LOOKUP_SIZE = 1 << TINFL_FAST_LOOKUP_BITS 618 }; 619 620 typedef struct 621 { 622 mz_uint8 m_code_size[TINFL_MAX_HUFF_SYMBOLS_0]; 623 mz_int16 m_look_up[TINFL_FAST_LOOKUP_SIZE], m_tree[TINFL_MAX_HUFF_SYMBOLS_0 * 2]; 624 } tinfl_huff_table; 625 626 #if MINIZ_HAS_64BIT_REGISTERS 627 #define TINFL_USE_64BIT_BITBUF 1 628 #endif 629 630 #if TINFL_USE_64BIT_BITBUF 631 typedef mz_uint64 tinfl_bit_buf_t; 632 #define TINFL_BITBUF_SIZE (64) 633 #else 634 typedef mz_uint32 tinfl_bit_buf_t; 635 #define TINFL_BITBUF_SIZE (32) 636 #endif 637 638 struct tinfl_decompressor_tag 639 { 640 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]; 641 tinfl_bit_buf_t m_bit_buf; 642 size_t m_dist_from_out_buf_start; 643 tinfl_huff_table m_tables[TINFL_MAX_HUFF_TABLES]; 644 mz_uint8 m_raw_header[4], m_len_codes[TINFL_MAX_HUFF_SYMBOLS_0 + TINFL_MAX_HUFF_SYMBOLS_1 + 137]; 645 }; 646 647 // ------------------- Low-level Compression API Definitions 648 649 // Set TDEFL_LESS_MEMORY to 1 to use less memory (compression will be slightly slower, and raw/dynamic blocks will be output more frequently). 650 #define TDEFL_LESS_MEMORY 1 651 652 // tdefl_init() compression flags logically OR'd together (low 12 bits contain the max. number of probes per dictionary search): 653 // 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). 654 enum 655 { 656 TDEFL_HUFFMAN_ONLY = 0, TDEFL_DEFAULT_MAX_PROBES = 128, TDEFL_MAX_PROBES_MASK = 0xFFF 657 }; 658 659 // 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. 660 // TDEFL_COMPUTE_ADLER32: Always compute the adler-32 of the input data (even when not writing zlib headers). 661 // TDEFL_GREEDY_PARSING_FLAG: Set to use faster greedy parsing, instead of more efficient lazy parsing. 662 // 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). 663 // TDEFL_RLE_MATCHES: Only look for RLE matches (matches with a distance of 1) 664 // TDEFL_FILTER_MATCHES: Discards matches <= 5 chars if enabled. 665 // TDEFL_FORCE_ALL_STATIC_BLOCKS: Disable usage of optimized Huffman tables. 666 // TDEFL_FORCE_ALL_RAW_BLOCKS: Only use raw (uncompressed) deflate blocks. 667 // The low 12 bits are reserved to control the max # of hash probes per dictionary lookup (see TDEFL_MAX_PROBES_MASK). 668 enum 669 { 670 TDEFL_WRITE_ZLIB_HEADER = 0x01000, 671 TDEFL_COMPUTE_ADLER32 = 0x02000, 672 TDEFL_GREEDY_PARSING_FLAG = 0x04000, 673 TDEFL_NONDETERMINISTIC_PARSING_FLAG = 0x08000, 674 TDEFL_RLE_MATCHES = 0x10000, 675 TDEFL_FILTER_MATCHES = 0x20000, 676 TDEFL_FORCE_ALL_STATIC_BLOCKS = 0x40000, 677 TDEFL_FORCE_ALL_RAW_BLOCKS = 0x80000 678 }; 679 680 // High level compression functions: 681 // tdefl_compress_mem_to_heap() compresses a block in memory to a heap block allocated via malloc(). 682 // On entry: 683 // pSrc_buf, src_buf_len: Pointer and size of source block to compress. 684 // flags: The max match finder probes (default is 128) logically OR'd against the above flags. Higher probes are slower but improve compression. 685 // On return: 686 // Function returns a pointer to the compressed data, or NULL on failure. 687 // *pOut_len will be set to the compressed data's size, which could be larger than src_buf_len on uncompressible data. 688 // The caller must free() the returned block when it's no longer needed. 689 // 690 // Note: Due to MINIZ_NO_MALLOC, this function will not work. 691 // 692 void *tdefl_compress_mem_to_heap(const void *pSrc_buf, size_t src_buf_len, size_t *pOut_len, int flags) __attribute__((warning("miniz is compiled without malloc so this function does not work")));; 693 694 // tdefl_compress_mem_to_mem() compresses a block in memory to another block in memory. 695 // Returns 0 on failure. 696 size_t tdefl_compress_mem_to_mem(void *pOut_buf, size_t out_buf_len, const void *pSrc_buf, size_t src_buf_len, int flags); 697 698 // Compresses an image to a compressed PNG file in memory. 699 // On entry: 700 // pImage, w, h, and num_chans describe the image to compress. num_chans may be 1, 2, 3, or 4. 701 // The image pitch in bytes per scanline will be w*num_chans. The leftmost pixel on the top scanline is stored first in memory. 702 // level may range from [0,10], use MZ_NO_COMPRESSION, MZ_BEST_SPEED, MZ_BEST_COMPRESSION, etc. or a decent default is MZ_DEFAULT_LEVEL 703 // If flip is true, the image will be flipped on the Y axis (useful for OpenGL apps). 704 // On return: 705 // Function returns a pointer to the compressed data, or NULL on failure. 706 // *pLen_out will be set to the size of the PNG image file. 707 // The caller must mz_free() the returned heap block (which will typically be larger than *pLen_out) when it's no longer needed. 708 void *tdefl_write_image_to_png_file_in_memory_ex(const void *pImage, int w, int h, int num_chans, size_t *pLen_out, mz_uint level, mz_bool flip); 709 void *tdefl_write_image_to_png_file_in_memory(const void *pImage, int w, int h, int num_chans, size_t *pLen_out); 710 711 // Output stream interface. The compressor uses this interface to write compressed data. It'll typically be called TDEFL_OUT_BUF_SIZE at a time. 712 typedef mz_bool (*tdefl_put_buf_func_ptr)(const void* pBuf, int len, void *pUser); 713 714 // tdefl_compress_mem_to_output() compresses a block to an output stream. The above helpers use this function internally. 715 // 716 // Note: Due to MINIZ_NO_MALLOC, this function will not work. 717 // 718 mz_bool tdefl_compress_mem_to_output(const void *pBuf, size_t buf_len, tdefl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags) __attribute__((warning("miniz is compiled without malloc so this function does not work")));; 719 720 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 }; 721 722 // TDEFL_OUT_BUF_SIZE MUST be large enough to hold a single entire compressed output block (using static/fixed Huffman codes). 723 #if TDEFL_LESS_MEMORY 724 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 }; 725 #else 726 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 }; 727 #endif 728 729 // 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. 730 typedef enum 731 { 732 TDEFL_STATUS_BAD_PARAM = -2, 733 TDEFL_STATUS_PUT_BUF_FAILED = -1, 734 TDEFL_STATUS_OKAY = 0, 735 TDEFL_STATUS_DONE = 1, 736 } tdefl_status; 737 738 // Must map to MZ_NO_FLUSH, MZ_SYNC_FLUSH, etc. enums 739 typedef enum 740 { 741 TDEFL_NO_FLUSH = 0, 742 TDEFL_SYNC_FLUSH = 2, 743 TDEFL_FULL_FLUSH = 3, 744 TDEFL_FINISH = 4 745 } tdefl_flush; 746 747 // tdefl's compression state structure. 748 typedef struct 749 { 750 tdefl_put_buf_func_ptr m_pPut_buf_func; 751 void *m_pPut_buf_user; 752 mz_uint m_flags, m_max_probes[2]; 753 int m_greedy_parsing; 754 mz_uint m_adler32, m_lookahead_pos, m_lookahead_size, m_dict_size; 755 mz_uint8 *m_pLZ_code_buf, *m_pLZ_flags, *m_pOutput_buf, *m_pOutput_buf_end; 756 mz_uint m_num_flags_left, m_total_lz_bytes, m_lz_code_buf_dict_pos, m_bits_in, m_bit_buffer; 757 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; 758 tdefl_status m_prev_return_status; 759 const void *m_pIn_buf; 760 void *m_pOut_buf; 761 size_t *m_pIn_buf_size, *m_pOut_buf_size; 762 tdefl_flush m_flush; 763 const mz_uint8 *m_pSrc; 764 size_t m_src_buf_left, m_out_buf_ofs; 765 mz_uint8 m_dict[TDEFL_LZ_DICT_SIZE + TDEFL_MAX_MATCH_LEN - 1]; 766 mz_uint16 m_huff_count[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS]; 767 mz_uint16 m_huff_codes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS]; 768 mz_uint8 m_huff_code_sizes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS]; 769 mz_uint8 m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE]; 770 mz_uint16 m_next[TDEFL_LZ_DICT_SIZE]; 771 mz_uint16 m_hash[TDEFL_LZ_HASH_SIZE]; 772 mz_uint8 m_output_buf[TDEFL_OUT_BUF_SIZE]; 773 } tdefl_compressor; 774 775 // Initializes the compressor. 776 // There is no corresponding deinit() function because the tdefl API's do not dynamically allocate memory. 777 // 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. 778 // If pBut_buf_func is NULL the user should always call the tdefl_compress() API. 779 // flags: See the above enums (TDEFL_HUFFMAN_ONLY, TDEFL_WRITE_ZLIB_HEADER, etc.) 780 tdefl_status tdefl_init(tdefl_compressor *d, tdefl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags); 781 782 // 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. 783 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); 784 785 // tdefl_compress_buffer() is only usable when the tdefl_init() is called with a non-NULL tdefl_put_buf_func_ptr. 786 // tdefl_compress_buffer() always consumes the entire input buffer. 787 tdefl_status tdefl_compress_buffer(tdefl_compressor *d, const void *pIn_buf, size_t in_buf_size, tdefl_flush flush); 788 789 tdefl_status tdefl_get_prev_return_status(tdefl_compressor *d); 790 mz_uint32 tdefl_get_adler32(tdefl_compressor *d); 791 792 // 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. 793 #ifndef MINIZ_NO_ZLIB_APIS 794 // Create tdefl_compress() flags given zlib-style compression parameters. 795 // level may range from [0,10] (where 10 is absolute max compression, but may be much slower on some files) 796 // window_bits may be -15 (raw deflate) or 15 (zlib) 797 // strategy may be either MZ_DEFAULT_STRATEGY, MZ_FILTERED, MZ_HUFFMAN_ONLY, MZ_RLE, or MZ_FIXED 798 mz_uint tdefl_create_comp_flags_from_zip_params(int level, int window_bits, int strategy); 799 #endif // #ifndef MINIZ_NO_ZLIB_APIS 800 801 #ifdef __cplusplus 802 } 803 #endif 804 805 #endif // MINIZ_HEADER_INCLUDED 806