mirror of
https://github.com/Xevion/easy7zip.git
synced 2025-12-07 03:15:00 -06:00
163 lines
4.1 KiB
C
163 lines
4.1 KiB
C
|
|
/**
|
|
* Copyright (c) 2016 - 2017 Tino Reichardt
|
|
* All rights reserved.
|
|
*
|
|
* This source code is licensed under the BSD-style license found in the
|
|
* LICENSE file in the root directory of this source tree. An additional grant
|
|
* of patent rights can be found in the PATENTS file in the same directory.
|
|
*
|
|
* You can contact the author at:
|
|
* - zstdmt source repository: https://github.com/mcmilk/zstdmt
|
|
*/
|
|
|
|
/* ***************************************
|
|
* Defines
|
|
****************************************/
|
|
|
|
#ifndef BROTLIMT_H
|
|
#define BROTLIMT_H
|
|
|
|
#if defined (__cplusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
#include <stddef.h> /* size_t */
|
|
|
|
/* current maximum the library will accept */
|
|
#define BROTLIMT_THREAD_MAX 128
|
|
#define BROTLIMT_LEVEL_MIN 0
|
|
#define BROTLIMT_LEVEL_MAX 11
|
|
|
|
#define BROTLIMT_MAGICNUMBER 0x5242U /* BR */
|
|
#define BROTLIMT_MAGIC_SKIPPABLE 0x184D2A50U
|
|
|
|
#define BROTLI_VERSION_MAJOR 1
|
|
#define BROTLI_VERSION_MINOR 0
|
|
|
|
/* **************************************
|
|
* Error Handling
|
|
****************************************/
|
|
|
|
typedef enum {
|
|
BROTLIMT_error_no_error,
|
|
BROTLIMT_error_memory_allocation,
|
|
BROTLIMT_error_read_fail,
|
|
BROTLIMT_error_write_fail,
|
|
BROTLIMT_error_data_error,
|
|
BROTLIMT_error_frame_compress,
|
|
BROTLIMT_error_frame_decompress,
|
|
BROTLIMT_error_compressionParameter_unsupported,
|
|
BROTLIMT_error_compression_library,
|
|
BROTLIMT_error_canceled,
|
|
BROTLIMT_error_maxCode
|
|
} BROTLIMT_ErrorCode;
|
|
|
|
#define PREFIX(name) BROTLIMT_error_##name
|
|
#define MT_ERROR(name) ((size_t)-PREFIX(name))
|
|
extern unsigned BROTLIMT_isError(size_t code);
|
|
extern const char* BROTLIMT_getErrorString(size_t code);
|
|
|
|
/* **************************************
|
|
* Structures
|
|
****************************************/
|
|
|
|
typedef struct {
|
|
void *buf; /* ptr to data */
|
|
size_t size; /* current filled in buf */
|
|
size_t allocated; /* length of buf */
|
|
} BROTLIMT_Buffer;
|
|
|
|
/**
|
|
* reading and writing functions
|
|
* - you can use stdio functions or plain read/write
|
|
* - just write some wrapper on your own
|
|
* - a sample is given in 7-Zip ZS or bromt.c
|
|
* - the function should return -1 on error and zero on success
|
|
* - the read or written bytes will go to in->size or out->size
|
|
*/
|
|
typedef int (fn_read) (void *args, BROTLIMT_Buffer * in);
|
|
typedef int (fn_write) (void *args, BROTLIMT_Buffer * out);
|
|
|
|
typedef struct {
|
|
fn_read *fn_read;
|
|
void *arg_read;
|
|
fn_write *fn_write;
|
|
void *arg_write;
|
|
} BROTLIMT_RdWr_t;
|
|
|
|
/* **************************************
|
|
* Compression
|
|
****************************************/
|
|
|
|
typedef struct BROTLIMT_CCtx_s BROTLIMT_CCtx;
|
|
|
|
/**
|
|
* 1) allocate new cctx
|
|
* - return cctx or zero on error
|
|
*
|
|
* @level - 1 .. 9
|
|
* @threads - 1 .. BROTLIMT_THREAD_MAX
|
|
* @inputsize - if zero, becomes some optimal value for the level
|
|
* - if nonzero, the given value is taken
|
|
*/
|
|
BROTLIMT_CCtx *BROTLIMT_createCCtx(int threads, int level, int inputsize);
|
|
|
|
/**
|
|
* 2) threaded compression
|
|
* - errorcheck via
|
|
*/
|
|
size_t BROTLIMT_compressCCtx(BROTLIMT_CCtx * ctx, BROTLIMT_RdWr_t * rdwr);
|
|
|
|
/**
|
|
* 3) get some statistic
|
|
*/
|
|
size_t BROTLIMT_GetFramesCCtx(BROTLIMT_CCtx * ctx);
|
|
size_t BROTLIMT_GetInsizeCCtx(BROTLIMT_CCtx * ctx);
|
|
size_t BROTLIMT_GetOutsizeCCtx(BROTLIMT_CCtx * ctx);
|
|
|
|
/**
|
|
* 4) free cctx
|
|
* - no special return value
|
|
*/
|
|
void BROTLIMT_freeCCtx(BROTLIMT_CCtx * ctx);
|
|
|
|
/* **************************************
|
|
* Decompression
|
|
****************************************/
|
|
|
|
typedef struct BROTLIMT_DCtx_s BROTLIMT_DCtx;
|
|
|
|
/**
|
|
* 1) allocate new cctx
|
|
* - return cctx or zero on error
|
|
*
|
|
* @threads - 1 .. BROTLIMT_THREAD_MAX
|
|
* @ inputsize - used for single threaded standard bro format without skippable frames
|
|
*/
|
|
BROTLIMT_DCtx *BROTLIMT_createDCtx(int threads, int inputsize);
|
|
|
|
/**
|
|
* 2) threaded compression
|
|
* - return -1 on error
|
|
*/
|
|
size_t BROTLIMT_decompressDCtx(BROTLIMT_DCtx * ctx, BROTLIMT_RdWr_t * rdwr);
|
|
|
|
/**
|
|
* 3) get some statistic
|
|
*/
|
|
size_t BROTLIMT_GetFramesDCtx(BROTLIMT_DCtx * ctx);
|
|
size_t BROTLIMT_GetInsizeDCtx(BROTLIMT_DCtx * ctx);
|
|
size_t BROTLIMT_GetOutsizeDCtx(BROTLIMT_DCtx * ctx);
|
|
|
|
/**
|
|
* 4) free cctx
|
|
* - no special return value
|
|
*/
|
|
void BROTLIMT_freeDCtx(BROTLIMT_DCtx * ctx);
|
|
|
|
#if defined (__cplusplus)
|
|
}
|
|
#endif
|
|
#endif /* BROTLIMT_H */
|