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Diffstat (limited to 'include/compress.h')
-rw-r--r-- | include/compress.h | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/include/compress.h b/include/compress.h deleted file mode 100644 index 1dfba12..0000000 --- a/include/compress.h +++ /dev/null @@ -1,71 +0,0 @@ -/* SPDX-License-Identifier: GPL-3.0-or-later */ -/* - * compress.h - * - * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at> - */ -#ifndef COMPRESS_H -#define COMPRESS_H - -#include "config.h" - -#include <sys/types.h> -#include <stdbool.h> -#include <stddef.h> -#include <stdint.h> - -#include "squashfs.h" - -typedef struct compressor_t compressor_t; - -/* Encapsultes a compressor with a simple interface to compress or - uncompress/extract blocks of data. */ -struct compressor_t { - /* Write compressor options to the output file if necessary. - Returns the number of bytes written or -1 on failure. - Internally prints error messages to stderr. */ - int (*write_options)(compressor_t *cmp, int fd); - - /* Read compressor options to the input file. - Returns zero on success, -1 on failure. - Internally prints error messages to stderr. */ - int (*read_options)(compressor_t *cmp, int fd); - - /* - Compress or uncompress a chunk of data. - - Returns the number of bytes written to the output buffer, -1 on - failure or 0 if the output buffer was too small. - The compressor also returns 0 if the compressed result ends - up larger than the original input. - - Internally prints compressor specific error messages to stderr. - */ - ssize_t (*do_block)(compressor_t *cmp, const uint8_t *in, size_t size, - uint8_t *out, size_t outsize); - - /* create another compressor just like this one, i.e. - with the exact same settings */ - compressor_t *(*create_copy)(compressor_t *cmp); - - void (*destroy)(compressor_t *stream); -}; - -bool compressor_exists(E_SQFS_COMPRESSOR id); - -/* block_size is the configured block size for the SquashFS image. Needed - by some compressors to set internal defaults. */ -compressor_t *compressor_create(E_SQFS_COMPRESSOR id, bool compress, - size_t block_size, char *options); - -void compressor_print_help(E_SQFS_COMPRESSOR id); - -void compressor_print_available(void); - -E_SQFS_COMPRESSOR compressor_get_default(void); - -const char *compressor_name_from_id(E_SQFS_COMPRESSOR id); - -int compressor_id_from_name(const char *name, E_SQFS_COMPRESSOR *out); - -#endif /* COMPRESS_H */ |