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