compress.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef PERF_COMPRESS_H
 3#define PERF_COMPRESS_H
 4
 5#include <stdbool.h>
 6#include <stddef.h>
 7#include <stdio.h>
 8#include <sys/types.h>
 9#include <linux/compiler.h>
10#ifdef HAVE_ZSTD_SUPPORT
11#include <zstd.h>
12#endif
13
14#ifdef HAVE_ZLIB_SUPPORT
15int gzip_decompress_to_file(const char *input, int output_fd);
16bool gzip_is_compressed(const char *input);
17#endif
18
19#ifdef HAVE_LZMA_SUPPORT
20int lzma_decompress_stream_to_file(FILE *input, int output_fd);
21int lzma_decompress_to_file(const char *input, int output_fd);
22bool lzma_is_compressed(const char *input);
23#else
24static inline
25int lzma_decompress_stream_to_file(FILE *input __maybe_unused,
26				   int output_fd __maybe_unused)
27{
28	return -1;
29}
30static inline
31int lzma_decompress_to_file(const char *input __maybe_unused,
32			    int output_fd __maybe_unused)
33{
34	return -1;
35}
36static inline int lzma_is_compressed(const char *input __maybe_unused)
37{
38	return false;
39}
40#endif
41
42struct zstd_data {
43#ifdef HAVE_ZSTD_SUPPORT
44	ZSTD_CStream	*cstream;
45	ZSTD_DStream	*dstream;
46	int comp_level;
47#endif
48};
49
50#ifdef HAVE_ZSTD_SUPPORT
51
52int zstd_init(struct zstd_data *data, int level);
53int zstd_fini(struct zstd_data *data);
54
55ssize_t zstd_compress_stream_to_records(struct zstd_data *data, void *dst, size_t dst_size,
56				       void *src, size_t src_size, size_t max_record_size,
57				       size_t process_header(void *record, size_t increment));
58
59size_t zstd_decompress_stream(struct zstd_data *data, void *src, size_t src_size,
60			      void *dst, size_t dst_size);
61#else /* !HAVE_ZSTD_SUPPORT */
62
63static inline int zstd_init(struct zstd_data *data __maybe_unused, int level __maybe_unused)
64{
65	return 0;
66}
67
68static inline int zstd_fini(struct zstd_data *data __maybe_unused)
69{
70	return 0;
71}
72
73static inline
74ssize_t zstd_compress_stream_to_records(struct zstd_data *data __maybe_unused,
75				       void *dst __maybe_unused, size_t dst_size __maybe_unused,
76				       void *src __maybe_unused, size_t src_size __maybe_unused,
77				       size_t max_record_size __maybe_unused,
78				       size_t process_header(void *record, size_t increment) __maybe_unused)
79{
80	return 0;
81}
82
83static inline size_t zstd_decompress_stream(struct zstd_data *data __maybe_unused, void *src __maybe_unused,
84					    size_t src_size __maybe_unused, void *dst __maybe_unused,
85					    size_t dst_size __maybe_unused)
86{
87	return 0;
88}
89#endif
90
91#endif /* PERF_COMPRESS_H */