1 /* 2 * SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 #ifndef MINIZ_HEADER_INCLUDED 7 #define MINIZ_HEADER_INCLUDED 8 9 #include <stdlib.h> 10 #include "esp_rom_caps.h" 11 12 // Defines to completely disable specific portions of miniz.c: 13 // If all macros here are defined the only functionality remaining will be CRC-32, adler-32, tinfl, and tdefl. 14 15 // Define MINIZ_NO_STDIO to disable all usage and any functions which rely on stdio for file I/O. 16 #define MINIZ_NO_STDIO 17 18 // If MINIZ_NO_TIME is specified then the ZIP archive functions will not be able to get the current time, or 19 // get/set file times, and the C run-time funcs that get/set times won't be called. 20 // The current downside is the times written to your archives will be from 1979. 21 #define MINIZ_NO_TIME 22 23 // Define MINIZ_NO_ARCHIVE_APIS to disable all ZIP archive API's. 24 #define MINIZ_NO_ARCHIVE_APIS 25 26 // Define MINIZ_NO_ARCHIVE_APIS to disable all writing related ZIP archive API's. 27 #define MINIZ_NO_ARCHIVE_WRITING_APIS 28 29 // Define MINIZ_NO_ZLIB_APIS to remove all ZLIB-style compression/decompression API's. 30 #define MINIZ_NO_ZLIB_APIS 31 32 // Define MINIZ_NO_ZLIB_COMPATIBLE_NAME to disable zlib names, to prevent conflicts against stock zlib. 33 #define MINIZ_NO_ZLIB_COMPATIBLE_NAMES 34 35 // Define MINIZ_NO_MALLOC to disable all calls to malloc, free, and realloc. 36 // Note if MINIZ_NO_MALLOC is defined then the user must always provide custom user alloc/free/realloc 37 // callbacks to the zlib and archive API's, and a few stand-alone helper API's which don't provide custom user 38 // functions (such as tdefl_compress_mem_to_heap() and tinfl_decompress_mem_to_heap()) won't work. 39 #define MINIZ_NO_MALLOC 40 41 #if defined(__TINYC__) && (defined(__linux) || defined(__linux__)) 42 // TODO: Work around "error: include file 'sys\utime.h' when compiling with tcc on Linux 43 #define MINIZ_NO_TIME 44 #endif 45 46 #if !defined(MINIZ_NO_TIME) && !defined(MINIZ_NO_ARCHIVE_APIS) 47 #include <time.h> 48 #endif 49 50 //Hardcoded options for Xtensa - JD 51 #define MINIZ_X86_OR_X64_CPU 0 52 #define MINIZ_LITTLE_ENDIAN 1 53 #define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 0 54 #define MINIZ_HAS_64BIT_REGISTERS 0 55 #define TINFL_USE_64BIT_BITBUF 0 56 57 58 #if defined(_M_IX86) || defined(_M_X64) || defined(__i386__) || defined(__i386) || defined(__i486__) || defined(__i486) || defined(i386) || defined(__ia64__) || defined(__x86_64__) 59 // MINIZ_X86_OR_X64_CPU is only used to help set the below macros. 60 #define MINIZ_X86_OR_X64_CPU 1 61 #endif 62 63 #if (__BYTE_ORDER__==__ORDER_LITTLE_ENDIAN__) || MINIZ_X86_OR_X64_CPU 64 // Set MINIZ_LITTLE_ENDIAN to 1 if the processor is little endian. 65 #define MINIZ_LITTLE_ENDIAN 1 66 #endif 67 68 #if MINIZ_X86_OR_X64_CPU 69 // Set MINIZ_USE_UNALIGNED_LOADS_AND_STORES to 1 on CPU's that permit efficient integer loads and stores from unaligned addresses. 70 #define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 1 71 #endif 72 73 #if defined(_M_X64) || defined(_WIN64) || defined(__MINGW64__) || defined(_LP64) || defined(__LP64__) || defined(__ia64__) || defined(__x86_64__) 74 // 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). 75 #define MINIZ_HAS_64BIT_REGISTERS 1 76 #endif 77 78 #ifdef __cplusplus 79 extern "C" { 80 #endif 81 82 // ------------------- zlib-style API Definitions. 83 84 // 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! 85 typedef unsigned long mz_ulong; 86 87 // 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. 88 void mz_free(void *p); 89 90 #define MZ_ADLER32_INIT (1) 91 // mz_adler32() returns the initial adler-32 value to use when called with ptr==NULL. 92 mz_ulong mz_adler32(mz_ulong adler, const unsigned char *ptr, size_t buf_len); 93 94 #define MZ_CRC32_INIT (0) 95 96 #if ESP_ROM_HAS_MZ_CRC32 97 // mz_crc32() returns the initial CRC-32 value to use when called with ptr==NULL. 98 mz_ulong mz_crc32(mz_ulong crc, const unsigned char *ptr, size_t buf_len); 99 #else 100 #include "esp_rom_crc.h" 101 #define mz_crc32 esp_rom_crc32_le 102 #endif //ESP_ROM_HAS_MZ_CRC32 103 104 // Compression strategies. 105 enum { MZ_DEFAULT_STRATEGY = 0, MZ_FILTERED = 1, MZ_HUFFMAN_ONLY = 2, MZ_RLE = 3, MZ_FIXED = 4 }; 106 107 // Method 108 #define MZ_DEFLATED 8 109 110 #ifndef MINIZ_NO_ZLIB_APIS 111 112 // Heap allocation callbacks. 113 // Note that mz_alloc_func parameter types purpsosely differ from zlib's: items/size is size_t, not unsigned long. 114 typedef void *(*mz_alloc_func)(void *opaque, size_t items, size_t size); 115 typedef void (*mz_free_func)(void *opaque, void *address); 116 typedef void *(*mz_realloc_func)(void *opaque, void *address, size_t items, size_t size); 117 118 #define MZ_VERSION "9.1.15" 119 #define MZ_VERNUM 0x91F0 120 #define MZ_VER_MAJOR 9 121 #define MZ_VER_MINOR 1 122 #define MZ_VER_REVISION 15 123 #define MZ_VER_SUBREVISION 0 124 125 // 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). 126 enum { MZ_NO_FLUSH = 0, MZ_PARTIAL_FLUSH = 1, MZ_SYNC_FLUSH = 2, MZ_FULL_FLUSH = 3, MZ_FINISH = 4, MZ_BLOCK = 5 }; 127 128 // Return status codes. MZ_PARAM_ERROR is non-standard. 129 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 }; 130 131 // 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. 132 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 }; 133 134 // Window bits 135 #define MZ_DEFAULT_WINDOW_BITS 15 136 137 struct mz_internal_state; 138 139 // Compression/decompression stream struct. 140 typedef struct mz_stream_s { 141 const unsigned char *next_in; // pointer to next byte to read 142 unsigned int avail_in; // number of bytes available at next_in 143 mz_ulong total_in; // total number of bytes consumed so far 144 145 unsigned char *next_out; // pointer to next byte to write 146 unsigned int avail_out; // number of bytes that can be written to next_out 147 mz_ulong total_out; // total number of bytes produced so far 148 149 char *msg; // error msg (unused) 150 struct mz_internal_state *state; // internal state, allocated by zalloc/zfree 151 152 mz_alloc_func zalloc; // optional heap allocation function (defaults to malloc) 153 mz_free_func zfree; // optional heap free function (defaults to free) 154 void *opaque; // heap alloc function user pointer 155 156 int data_type; // data_type (unused) 157 mz_ulong adler; // adler32 of the source or uncompressed data 158 mz_ulong reserved; // not used 159 } mz_stream; 160 161 typedef mz_stream *mz_streamp; 162 163 // Returns the version string of miniz.c. 164 const char *mz_version(void); 165 166 // mz_deflateInit() initializes a compressor with default options: 167 // Parameters: 168 // pStream must point to an initialized mz_stream struct. 169 // level must be between [MZ_NO_COMPRESSION, MZ_BEST_COMPRESSION]. 170 // level 1 enables a specially optimized compression function that's been optimized purely for performance, not ratio. 171 // (This special func. is currently only enabled when MINIZ_USE_UNALIGNED_LOADS_AND_STORES and MINIZ_LITTLE_ENDIAN are defined.) 172 // Return values: 173 // MZ_OK on success. 174 // MZ_STREAM_ERROR if the stream is bogus. 175 // MZ_PARAM_ERROR if the input parameters are bogus. 176 // MZ_MEM_ERROR on out of memory. 177 int mz_deflateInit(mz_streamp pStream, int level); 178 179 // mz_deflateInit2() is like mz_deflate(), except with more control: 180 // Additional parameters: 181 // method must be MZ_DEFLATED 182 // 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) 183 // mem_level must be between [1, 9] (it's checked but ignored by miniz.c) 184 int mz_deflateInit2(mz_streamp pStream, int level, int method, int window_bits, int mem_level, int strategy); 185 186 // Quickly resets a compressor without having to reallocate anything. Same as calling mz_deflateEnd() followed by mz_deflateInit()/mz_deflateInit2(). 187 int mz_deflateReset(mz_streamp pStream); 188 189 // mz_deflate() compresses the input to output, consuming as much of the input and producing as much output as possible. 190 // Parameters: 191 // 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. 192 // flush may be MZ_NO_FLUSH, MZ_PARTIAL_FLUSH/MZ_SYNC_FLUSH, MZ_FULL_FLUSH, or MZ_FINISH. 193 // Return values: 194 // 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). 195 // 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. 196 // MZ_STREAM_ERROR if the stream is bogus. 197 // MZ_PARAM_ERROR if one of the parameters is invalid. 198 // 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.) 199 int mz_deflate(mz_streamp pStream, int flush); 200 201 // mz_deflateEnd() deinitializes a compressor: 202 // Return values: 203 // MZ_OK on success. 204 // MZ_STREAM_ERROR if the stream is bogus. 205 int mz_deflateEnd(mz_streamp pStream); 206 207 // 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. 208 mz_ulong mz_deflateBound(mz_streamp pStream, mz_ulong source_len); 209 210 // Single-call compression functions mz_compress() and mz_compress2(): 211 // Returns MZ_OK on success, or one of the error codes from mz_deflate() on failure. 212 int mz_compress(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len); 213 int mz_compress2(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len, int level); 214 215 // mz_compressBound() returns a (very) conservative upper bound on the amount of data that could be generated by calling mz_compress(). 216 mz_ulong mz_compressBound(mz_ulong source_len); 217 218 // Initializes a decompressor. 219 int mz_inflateInit(mz_streamp pStream); 220 221 // 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: 222 // window_bits must be MZ_DEFAULT_WINDOW_BITS (to parse zlib header/footer) or -MZ_DEFAULT_WINDOW_BITS (raw deflate). 223 int mz_inflateInit2(mz_streamp pStream, int window_bits); 224 225 // 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. 226 // Parameters: 227 // 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. 228 // flush may be MZ_NO_FLUSH, MZ_SYNC_FLUSH, or MZ_FINISH. 229 // 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). 230 // 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. 231 // Return values: 232 // 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. 233 // 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. 234 // MZ_STREAM_ERROR if the stream is bogus. 235 // MZ_DATA_ERROR if the deflate stream is invalid. 236 // MZ_PARAM_ERROR if one of the parameters is invalid. 237 // 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 238 // with more input data, or with more room in the output buffer (except when using single call decompression, described above). 239 int mz_inflate(mz_streamp pStream, int flush); 240 241 // Deinitializes a decompressor. 242 int mz_inflateEnd(mz_streamp pStream); 243 244 // Single-call decompression. 245 // Returns MZ_OK on success, or one of the error codes from mz_inflate() on failure. 246 int mz_uncompress(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len); 247 248 // Returns a string description of the specified error code, or NULL if the error code is invalid. 249 const char *mz_error(int err); 250 251 // 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. 252 // Define MINIZ_NO_ZLIB_COMPATIBLE_NAMES to disable zlib-compatibility if you use zlib in the same project. 253 #ifndef MINIZ_NO_ZLIB_COMPATIBLE_NAMES 254 typedef unsigned char Byte; 255 typedef unsigned int uInt; 256 typedef mz_ulong uLong; 257 typedef Byte Bytef; 258 typedef uInt uIntf; 259 typedef char charf; 260 typedef int intf; 261 typedef void *voidpf; 262 typedef uLong uLongf; 263 typedef void *voidp; 264 typedef void *const voidpc; 265 #define Z_NULL 0 266 #define Z_NO_FLUSH MZ_NO_FLUSH 267 #define Z_PARTIAL_FLUSH MZ_PARTIAL_FLUSH 268 #define Z_SYNC_FLUSH MZ_SYNC_FLUSH 269 #define Z_FULL_FLUSH MZ_FULL_FLUSH 270 #define Z_FINISH MZ_FINISH 271 #define Z_BLOCK MZ_BLOCK 272 #define Z_OK MZ_OK 273 #define Z_STREAM_END MZ_STREAM_END 274 #define Z_NEED_DICT MZ_NEED_DICT 275 #define Z_ERRNO MZ_ERRNO 276 #define Z_STREAM_ERROR MZ_STREAM_ERROR 277 #define Z_DATA_ERROR MZ_DATA_ERROR 278 #define Z_MEM_ERROR MZ_MEM_ERROR 279 #define Z_BUF_ERROR MZ_BUF_ERROR 280 #define Z_VERSION_ERROR MZ_VERSION_ERROR 281 #define Z_PARAM_ERROR MZ_PARAM_ERROR 282 #define Z_NO_COMPRESSION MZ_NO_COMPRESSION 283 #define Z_BEST_SPEED MZ_BEST_SPEED 284 #define Z_BEST_COMPRESSION MZ_BEST_COMPRESSION 285 #define Z_DEFAULT_COMPRESSION MZ_DEFAULT_COMPRESSION 286 #define Z_DEFAULT_STRATEGY MZ_DEFAULT_STRATEGY 287 #define Z_FILTERED MZ_FILTERED 288 #define Z_HUFFMAN_ONLY MZ_HUFFMAN_ONLY 289 #define Z_RLE MZ_RLE 290 #define Z_FIXED MZ_FIXED 291 #define Z_DEFLATED MZ_DEFLATED 292 #define Z_DEFAULT_WINDOW_BITS MZ_DEFAULT_WINDOW_BITS 293 #define alloc_func mz_alloc_func 294 #define free_func mz_free_func 295 #define internal_state mz_internal_state 296 #define z_stream mz_stream 297 #define deflateInit mz_deflateInit 298 #define deflateInit2 mz_deflateInit2 299 #define deflateReset mz_deflateReset 300 #define deflate mz_deflate 301 #define deflateEnd mz_deflateEnd 302 #define deflateBound mz_deflateBound 303 #define compress mz_compress 304 #define compress2 mz_compress2 305 #define compressBound mz_compressBound 306 #define inflateInit mz_inflateInit 307 #define inflateInit2 mz_inflateInit2 308 #define inflate mz_inflate 309 #define inflateEnd mz_inflateEnd 310 #define uncompress mz_uncompress 311 #define crc32 mz_crc32 312 #define adler32 mz_adler32 313 #define MAX_WBITS 15 314 #define MAX_MEM_LEVEL 9 315 #define zError mz_error 316 #define ZLIB_VERSION MZ_VERSION 317 #define ZLIB_VERNUM MZ_VERNUM 318 #define ZLIB_VER_MAJOR MZ_VER_MAJOR 319 #define ZLIB_VER_MINOR MZ_VER_MINOR 320 #define ZLIB_VER_REVISION MZ_VER_REVISION 321 #define ZLIB_VER_SUBREVISION MZ_VER_SUBREVISION 322 #define zlibVersion mz_version 323 #define zlib_version mz_version() 324 #endif // #ifndef MINIZ_NO_ZLIB_COMPATIBLE_NAMES 325 326 #endif // MINIZ_NO_ZLIB_APIS 327 328 // ------------------- Types and macros 329 330 typedef unsigned char mz_uint8; 331 typedef signed short mz_int16; 332 typedef unsigned short mz_uint16; 333 typedef unsigned int mz_uint32; 334 typedef unsigned int mz_uint; 335 typedef long long mz_int64; 336 typedef unsigned long long mz_uint64; 337 typedef int mz_bool; 338 339 #define MZ_FALSE (0) 340 #define MZ_TRUE (1) 341 342 // An attempt to work around MSVC's spammy "warning C4127: conditional expression is constant" message. 343 #ifdef _MSC_VER 344 #define MZ_MACRO_END while (0, 0) 345 #else 346 #define MZ_MACRO_END while (0) 347 #endif 348 349 // ------------------- ZIP archive reading/writing 350 351 #ifndef MINIZ_NO_ARCHIVE_APIS 352 353 enum { 354 MZ_ZIP_MAX_IO_BUF_SIZE = 64 * 1024, 355 MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE = 260, 356 MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE = 256 357 }; 358 359 typedef struct { 360 mz_uint32 m_file_index; 361 mz_uint32 m_central_dir_ofs; 362 mz_uint16 m_version_made_by; 363 mz_uint16 m_version_needed; 364 mz_uint16 m_bit_flag; 365 mz_uint16 m_method; 366 #ifndef MINIZ_NO_TIME 367 time_t m_time; 368 #endif 369 mz_uint32 m_crc32; 370 mz_uint64 m_comp_size; 371 mz_uint64 m_uncomp_size; 372 mz_uint16 m_internal_attr; 373 mz_uint32 m_external_attr; 374 mz_uint64 m_local_header_ofs; 375 mz_uint32 m_comment_size; 376 char m_filename[MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE]; 377 char m_comment[MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE]; 378 } mz_zip_archive_file_stat; 379 380 typedef size_t (*mz_file_read_func)(void *pOpaque, mz_uint64 file_ofs, void *pBuf, size_t n); 381 typedef size_t (*mz_file_write_func)(void *pOpaque, mz_uint64 file_ofs, const void *pBuf, size_t n); 382 383 struct mz_zip_internal_state_tag; 384 typedef struct mz_zip_internal_state_tag mz_zip_internal_state; 385 386 typedef enum { 387 MZ_ZIP_MODE_INVALID = 0, 388 MZ_ZIP_MODE_READING = 1, 389 MZ_ZIP_MODE_WRITING = 2, 390 MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED = 3 391 } mz_zip_mode; 392 393 typedef struct mz_zip_archive_tag { 394 mz_uint64 m_archive_size; 395 mz_uint64 m_central_directory_file_ofs; 396 mz_uint m_total_files; 397 mz_zip_mode m_zip_mode; 398 399 mz_uint m_file_offset_alignment; 400 401 mz_alloc_func m_pAlloc; 402 mz_free_func m_pFree; 403 mz_realloc_func m_pRealloc; 404 void *m_pAlloc_opaque; 405 406 mz_file_read_func m_pRead; 407 mz_file_write_func m_pWrite; 408 void *m_pIO_opaque; 409 410 mz_zip_internal_state *m_pState; 411 412 } mz_zip_archive; 413 414 typedef enum { 415 MZ_ZIP_FLAG_CASE_SENSITIVE = 0x0100, 416 MZ_ZIP_FLAG_IGNORE_PATH = 0x0200, 417 MZ_ZIP_FLAG_COMPRESSED_DATA = 0x0400, 418 MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY = 0x0800 419 } mz_zip_flags; 420 421 // ZIP archive reading 422 423 // Inits a ZIP archive reader. 424 // These functions read and validate the archive's central directory. 425 mz_bool mz_zip_reader_init(mz_zip_archive *pZip, mz_uint64 size, mz_uint32 flags); 426 mz_bool mz_zip_reader_init_mem(mz_zip_archive *pZip, const void *pMem, size_t size, mz_uint32 flags); 427 428 #ifndef MINIZ_NO_STDIO 429 mz_bool mz_zip_reader_init_file(mz_zip_archive *pZip, const char *pFilename, mz_uint32 flags); 430 #endif 431 432 // Returns the total number of files in the archive. 433 mz_uint mz_zip_reader_get_num_files(mz_zip_archive *pZip); 434 435 // Returns detailed information about an archive file entry. 436 mz_bool mz_zip_reader_file_stat(mz_zip_archive *pZip, mz_uint file_index, mz_zip_archive_file_stat *pStat); 437 438 // Determines if an archive file entry is a directory entry. 439 mz_bool mz_zip_reader_is_file_a_directory(mz_zip_archive *pZip, mz_uint file_index); 440 mz_bool mz_zip_reader_is_file_encrypted(mz_zip_archive *pZip, mz_uint file_index); 441 442 // Retrieves the filename of an archive file entry. 443 // 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. 444 mz_uint mz_zip_reader_get_filename(mz_zip_archive *pZip, mz_uint file_index, char *pFilename, mz_uint filename_buf_size); 445 446 // Attempts to locates a file in the archive's central directory. 447 // Valid flags: MZ_ZIP_FLAG_CASE_SENSITIVE, MZ_ZIP_FLAG_IGNORE_PATH 448 // Returns -1 if the file cannot be found. 449 int mz_zip_reader_locate_file(mz_zip_archive *pZip, const char *pName, const char *pComment, mz_uint flags); 450 451 // Extracts a archive file to a memory buffer using no memory allocation. 452 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); 453 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); 454 455 // Extracts a archive file to a memory buffer. 456 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); 457 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); 458 459 // Extracts a archive file to a dynamically allocated heap buffer. 460 void *mz_zip_reader_extract_to_heap(mz_zip_archive *pZip, mz_uint file_index, size_t *pSize, mz_uint flags); 461 void *mz_zip_reader_extract_file_to_heap(mz_zip_archive *pZip, const char *pFilename, size_t *pSize, mz_uint flags); 462 463 // Extracts a archive file using a callback function to output the file's data. 464 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); 465 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); 466 467 #ifndef MINIZ_NO_STDIO 468 // Extracts a archive file to a disk file and sets its last accessed and modified times. 469 // This function only extracts files, not archive directory records. 470 mz_bool mz_zip_reader_extract_to_file(mz_zip_archive *pZip, mz_uint file_index, const char *pDst_filename, mz_uint flags); 471 mz_bool mz_zip_reader_extract_file_to_file(mz_zip_archive *pZip, const char *pArchive_filename, const char *pDst_filename, mz_uint flags); 472 #endif 473 474 // Ends archive reading, freeing all allocations, and closing the input archive file if mz_zip_reader_init_file() was used. 475 mz_bool mz_zip_reader_end(mz_zip_archive *pZip); 476 477 // ZIP archive writing 478 479 #ifndef MINIZ_NO_ARCHIVE_WRITING_APIS 480 481 // Inits a ZIP archive writer. 482 mz_bool mz_zip_writer_init(mz_zip_archive *pZip, mz_uint64 existing_size); 483 mz_bool mz_zip_writer_init_heap(mz_zip_archive *pZip, size_t size_to_reserve_at_beginning, size_t initial_allocation_size); 484 485 #ifndef MINIZ_NO_STDIO 486 mz_bool mz_zip_writer_init_file(mz_zip_archive *pZip, const char *pFilename, mz_uint64 size_to_reserve_at_beginning); 487 #endif 488 489 // Converts a ZIP archive reader object into a writer object, to allow efficient in-place file appends to occur on an existing archive. 490 // 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. 491 // 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). 492 // Finally, for archives opened using mz_zip_reader_init, the mz_zip_archive's user provided m_pWrite function cannot be NULL. 493 // Note: In-place archive modification is not recommended unless you know what you're doing, because if execution stops or something goes wrong before 494 // the archive is finalized the file's central directory will be hosed. 495 mz_bool mz_zip_writer_init_from_reader(mz_zip_archive *pZip, const char *pFilename); 496 497 // Adds the contents of a memory buffer to an archive. These functions record the current local time into the archive. 498 // To add a directory entry, call this method with an archive name ending in a forwardslash with empty buffer. 499 // 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. 500 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); 501 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); 502 503 #ifndef MINIZ_NO_STDIO 504 // Adds the contents of a disk file to an archive. This function also records the disk file's modified time into the archive. 505 // 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. 506 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); 507 #endif 508 509 // Adds a file to an archive by fully cloning the data from another archive. 510 // This function fully clones the source file's compressed data (no recompression), along with its full filename, extra data, and comment fields. 511 mz_bool mz_zip_writer_add_from_zip_reader(mz_zip_archive *pZip, mz_zip_archive *pSource_zip, mz_uint file_index); 512 513 // Finalizes the archive by writing the central directory records followed by the end of central directory record. 514 // After an archive is finalized, the only valid call on the mz_zip_archive struct is mz_zip_writer_end(). 515 // An archive must be manually finalized by calling this function for it to be valid. 516 mz_bool mz_zip_writer_finalize_archive(mz_zip_archive *pZip); 517 mz_bool mz_zip_writer_finalize_heap_archive(mz_zip_archive *pZip, void **pBuf, size_t *pSize); 518 519 // Ends archive writing, freeing all allocations, and closing the output file if mz_zip_writer_init_file() was used. 520 // Note for the archive to be valid, it must have been finalized before ending. 521 mz_bool mz_zip_writer_end(mz_zip_archive *pZip); 522 523 // Misc. high-level helper functions: 524 525 // mz_zip_add_mem_to_archive_file_in_place() efficiently (but not atomically) appends a memory blob to a ZIP archive. 526 // 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. 527 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); 528 529 // Reads a single file from an archive into a heap block. 530 // Returns NULL on failure. 531 void *mz_zip_extract_archive_file_to_heap(const char *pZip_filename, const char *pArchive_name, size_t *pSize, mz_uint zip_flags); 532 533 #endif // #ifndef MINIZ_NO_ARCHIVE_WRITING_APIS 534 535 #endif // #ifndef MINIZ_NO_ARCHIVE_APIS 536 537 // ------------------- Low-level Decompression API Definitions 538 539 // Decompression flags used by tinfl_decompress(). 540 // 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. 541 // 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. 542 // 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). 543 // TINFL_FLAG_COMPUTE_ADLER32: Force adler-32 checksum computation of the decompressed bytes. 544 enum { 545 TINFL_FLAG_PARSE_ZLIB_HEADER = 1, 546 TINFL_FLAG_HAS_MORE_INPUT = 2, 547 TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF = 4, 548 TINFL_FLAG_COMPUTE_ADLER32 = 8 549 }; 550 551 // High level decompression functions: 552 // tinfl_decompress_mem_to_heap() decompresses a block in memory to a heap block allocated via malloc(). 553 // On entry: 554 // pSrc_buf, src_buf_len: Pointer and size of the Deflate or zlib source data to decompress. 555 // On return: 556 // Function returns a pointer to the decompressed data, or NULL on failure. 557 // *pOut_len will be set to the decompressed data's size, which could be larger than src_buf_len on uncompressible data. 558 // The caller must call mz_free() on the returned block when it's no longer needed. 559 void *tinfl_decompress_mem_to_heap(const void *pSrc_buf, size_t src_buf_len, size_t *pOut_len, int flags); 560 561 // tinfl_decompress_mem_to_mem() decompresses a block in memory to another block in memory. 562 // Returns TINFL_DECOMPRESS_MEM_TO_MEM_FAILED on failure, or the number of bytes written on success. 563 #define TINFL_DECOMPRESS_MEM_TO_MEM_FAILED ((size_t)(-1)) 564 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); 565 566 // 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. 567 // Returns 1 on success or 0 or -1 on failure. 568 typedef int (*tinfl_put_buf_func_ptr)(const void* pBuf, int len, void *pUser); 569 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); 570 571 struct tinfl_decompressor_tag; typedef struct tinfl_decompressor_tag tinfl_decompressor; 572 573 // Max size of LZ dictionary. 574 #define TINFL_LZ_DICT_SIZE 32768 575 576 // Return status. 577 typedef enum { 578 TINFL_STATUS_BAD_PARAM = -3, 579 TINFL_STATUS_ADLER32_MISMATCH = -2, 580 TINFL_STATUS_FAILED = -1, 581 TINFL_STATUS_DONE = 0, 582 TINFL_STATUS_NEEDS_MORE_INPUT = 1, 583 TINFL_STATUS_HAS_MORE_OUTPUT = 2 584 } tinfl_status; 585 586 // Initializes the decompressor to its initial state. 587 #define tinfl_init(r) do { (r)->m_state = 0; } MZ_MACRO_END 588 #define tinfl_get_adler32(r) (r)->m_check_adler32 589 590 // 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. 591 // 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. 592 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); 593 594 // Internal/private bits follow. 595 enum { 596 TINFL_MAX_HUFF_TABLES = 3, TINFL_MAX_HUFF_SYMBOLS_0 = 288, TINFL_MAX_HUFF_SYMBOLS_1 = 32, TINFL_MAX_HUFF_SYMBOLS_2 = 19, 597 TINFL_FAST_LOOKUP_BITS = 10, TINFL_FAST_LOOKUP_SIZE = 1 << TINFL_FAST_LOOKUP_BITS 598 }; 599 600 typedef struct { 601 mz_uint8 m_code_size[TINFL_MAX_HUFF_SYMBOLS_0]; 602 mz_int16 m_look_up[TINFL_FAST_LOOKUP_SIZE], m_tree[TINFL_MAX_HUFF_SYMBOLS_0 * 2]; 603 } tinfl_huff_table; 604 605 #if MINIZ_HAS_64BIT_REGISTERS 606 #define TINFL_USE_64BIT_BITBUF 1 607 #endif 608 609 #if TINFL_USE_64BIT_BITBUF 610 typedef mz_uint64 tinfl_bit_buf_t; 611 #define TINFL_BITBUF_SIZE (64) 612 #else 613 typedef mz_uint32 tinfl_bit_buf_t; 614 #define TINFL_BITBUF_SIZE (32) 615 #endif 616 617 struct tinfl_decompressor_tag { 618 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]; 619 tinfl_bit_buf_t m_bit_buf; 620 size_t m_dist_from_out_buf_start; 621 tinfl_huff_table m_tables[TINFL_MAX_HUFF_TABLES]; 622 mz_uint8 m_raw_header[4], m_len_codes[TINFL_MAX_HUFF_SYMBOLS_0 + TINFL_MAX_HUFF_SYMBOLS_1 + 137]; 623 }; 624 625 // ------------------- Low-level Compression API Definitions 626 627 // Set TDEFL_LESS_MEMORY to 1 to use less memory (compression will be slightly slower, and raw/dynamic blocks will be output more frequently). 628 #define TDEFL_LESS_MEMORY 1 629 630 // tdefl_init() compression flags logically OR'd together (low 12 bits contain the max. number of probes per dictionary search): 631 // 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). 632 enum { 633 TDEFL_HUFFMAN_ONLY = 0, TDEFL_DEFAULT_MAX_PROBES = 128, TDEFL_MAX_PROBES_MASK = 0xFFF 634 }; 635 636 // 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. 637 // TDEFL_COMPUTE_ADLER32: Always compute the adler-32 of the input data (even when not writing zlib headers). 638 // TDEFL_GREEDY_PARSING_FLAG: Set to use faster greedy parsing, instead of more efficient lazy parsing. 639 // 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). 640 // TDEFL_RLE_MATCHES: Only look for RLE matches (matches with a distance of 1) 641 // TDEFL_FILTER_MATCHES: Discards matches <= 5 chars if enabled. 642 // TDEFL_FORCE_ALL_STATIC_BLOCKS: Disable usage of optimized Huffman tables. 643 // TDEFL_FORCE_ALL_RAW_BLOCKS: Only use raw (uncompressed) deflate blocks. 644 // The low 12 bits are reserved to control the max # of hash probes per dictionary lookup (see TDEFL_MAX_PROBES_MASK). 645 enum { 646 TDEFL_WRITE_ZLIB_HEADER = 0x01000, 647 TDEFL_COMPUTE_ADLER32 = 0x02000, 648 TDEFL_GREEDY_PARSING_FLAG = 0x04000, 649 TDEFL_NONDETERMINISTIC_PARSING_FLAG = 0x08000, 650 TDEFL_RLE_MATCHES = 0x10000, 651 TDEFL_FILTER_MATCHES = 0x20000, 652 TDEFL_FORCE_ALL_STATIC_BLOCKS = 0x40000, 653 TDEFL_FORCE_ALL_RAW_BLOCKS = 0x80000 654 }; 655 656 // High level compression functions: 657 // tdefl_compress_mem_to_heap() compresses a block in memory to a heap block allocated via malloc(). 658 // On entry: 659 // pSrc_buf, src_buf_len: Pointer and size of source block to compress. 660 // flags: The max match finder probes (default is 128) logically OR'd against the above flags. Higher probes are slower but improve compression. 661 // On return: 662 // Function returns a pointer to the compressed data, or NULL on failure. 663 // *pOut_len will be set to the compressed data's size, which could be larger than src_buf_len on uncompressible data. 664 // The caller must free() the returned block when it's no longer needed. 665 void *tdefl_compress_mem_to_heap(const void *pSrc_buf, size_t src_buf_len, size_t *pOut_len, int flags); 666 667 // tdefl_compress_mem_to_mem() compresses a block in memory to another block in memory. 668 // Returns 0 on failure. 669 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); 670 671 // Compresses an image to a compressed PNG file in memory. 672 // On entry: 673 // pImage, w, h, and num_chans describe the image to compress. num_chans may be 1, 2, 3, or 4. 674 // The image pitch in bytes per scanline will be w*num_chans. The leftmost pixel on the top scanline is stored first in memory. 675 // 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 676 // If flip is true, the image will be flipped on the Y axis (useful for OpenGL apps). 677 // On return: 678 // Function returns a pointer to the compressed data, or NULL on failure. 679 // *pLen_out will be set to the size of the PNG image file. 680 // The caller must mz_free() the returned heap block (which will typically be larger than *pLen_out) when it's no longer needed. 681 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); 682 void *tdefl_write_image_to_png_file_in_memory(const void *pImage, int w, int h, int num_chans, size_t *pLen_out); 683 684 // Output stream interface. The compressor uses this interface to write compressed data. It'll typically be called TDEFL_OUT_BUF_SIZE at a time. 685 typedef mz_bool (*tdefl_put_buf_func_ptr)(const void *pBuf, int len, void *pUser); 686 687 // tdefl_compress_mem_to_output() compresses a block to an output stream. The above helpers use this function internally. 688 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); 689 690 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 }; 691 692 // TDEFL_OUT_BUF_SIZE MUST be large enough to hold a single entire compressed output block (using static/fixed Huffman codes). 693 #if TDEFL_LESS_MEMORY 694 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 }; 695 #else 696 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 }; 697 #endif 698 699 // 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. 700 typedef enum { 701 TDEFL_STATUS_BAD_PARAM = -2, 702 TDEFL_STATUS_PUT_BUF_FAILED = -1, 703 TDEFL_STATUS_OKAY = 0, 704 TDEFL_STATUS_DONE = 1, 705 } tdefl_status; 706 707 // Must map to MZ_NO_FLUSH, MZ_SYNC_FLUSH, etc. enums 708 typedef enum { 709 TDEFL_NO_FLUSH = 0, 710 TDEFL_SYNC_FLUSH = 2, 711 TDEFL_FULL_FLUSH = 3, 712 TDEFL_FINISH = 4 713 } tdefl_flush; 714 715 // tdefl's compression state structure. 716 typedef struct { 717 tdefl_put_buf_func_ptr m_pPut_buf_func; 718 void *m_pPut_buf_user; 719 mz_uint m_flags, m_max_probes[2]; 720 int m_greedy_parsing; 721 mz_uint m_adler32, m_lookahead_pos, m_lookahead_size, m_dict_size; 722 mz_uint8 *m_pLZ_code_buf, *m_pLZ_flags, *m_pOutput_buf, *m_pOutput_buf_end; 723 mz_uint m_num_flags_left, m_total_lz_bytes, m_lz_code_buf_dict_pos, m_bits_in, m_bit_buffer; 724 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; 725 tdefl_status m_prev_return_status; 726 const void *m_pIn_buf; 727 void *m_pOut_buf; 728 size_t *m_pIn_buf_size, *m_pOut_buf_size; 729 tdefl_flush m_flush; 730 const mz_uint8 *m_pSrc; 731 size_t m_src_buf_left, m_out_buf_ofs; 732 mz_uint8 m_dict[TDEFL_LZ_DICT_SIZE + TDEFL_MAX_MATCH_LEN - 1]; 733 mz_uint16 m_huff_count[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS]; 734 mz_uint16 m_huff_codes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS]; 735 mz_uint8 m_huff_code_sizes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS]; 736 mz_uint8 m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE]; 737 mz_uint16 m_next[TDEFL_LZ_DICT_SIZE]; 738 mz_uint16 m_hash[TDEFL_LZ_HASH_SIZE]; 739 mz_uint8 m_output_buf[TDEFL_OUT_BUF_SIZE]; 740 } tdefl_compressor; 741 742 // Initializes the compressor. 743 // There is no corresponding deinit() function because the tdefl API's do not dynamically allocate memory. 744 // pBut_buf_func: If **not** NULL, output data will be supplied to the specified callback. In this case, the user should call the tdefl_compress_buffer() API for compression. 745 // If pBut_buf_func is NULL the user should always call the tdefl_compress() API. 746 // flags: See the above enums (TDEFL_HUFFMAN_ONLY, TDEFL_WRITE_ZLIB_HEADER, etc.) 747 tdefl_status tdefl_init(tdefl_compressor *d, tdefl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags); 748 749 // 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. 750 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); 751 752 // tdefl_compress_buffer() is only usable when the tdefl_init() is called with a non-NULL tdefl_put_buf_func_ptr. 753 // tdefl_compress_buffer() always consumes the entire input buffer. 754 tdefl_status tdefl_compress_buffer(tdefl_compressor *d, const void *pIn_buf, size_t in_buf_size, tdefl_flush flush); 755 756 tdefl_status tdefl_get_prev_return_status(tdefl_compressor *d); 757 mz_uint32 tdefl_get_adler32(tdefl_compressor *d); 758 759 // 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. 760 #ifndef MINIZ_NO_ZLIB_APIS 761 // Create tdefl_compress() flags given zlib-style compression parameters. 762 // level may range from [0,10] (where 10 is absolute max compression, but may be much slower on some files) 763 // window_bits may be -15 (raw deflate) or 15 (zlib) 764 // strategy may be either MZ_DEFAULT_STRATEGY, MZ_FILTERED, MZ_HUFFMAN_ONLY, MZ_RLE, or MZ_FIXED 765 mz_uint tdefl_create_comp_flags_from_zip_params(int level, int window_bits, int strategy); 766 #endif // #ifndef MINIZ_NO_ZLIB_APIS 767 768 #ifdef __cplusplus 769 } 770 #endif 771 772 #endif // MINIZ_HEADER_INCLUDED 773