perf/util/compress.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef PERF_COMPRESS_H
0003 #define PERF_COMPRESS_H
0004
0005 #include <stdbool.h>
0006 #ifdef HAVE_ZSTD_SUPPORT
0007 #include <zstd.h>
0008 #endif
0009
0010 #ifdef HAVE_ZLIB_SUPPORT
0011 int gzip_decompress_to_file(const char *input, int output_fd);
0012 bool gzip_is_compressed(const char *input);
0013 #endif
0014
0015 #ifdef HAVE_LZMA_SUPPORT
0016 int lzma_decompress_to_file(const char *input, int output_fd);
0017 bool lzma_is_compressed(const char *input);
0018 #endif
0019
0020 struct zstd_data {
0021 #ifdef HAVE_ZSTD_SUPPORT
0022     ZSTD_CStream    *cstream;
0023     ZSTD_DStream    *dstream;
0024 #endif
0025 };
0026
0027 #ifdef HAVE_ZSTD_SUPPORT
0028
0029 int zstd_init(struct zstd_data *data, int level);
0030 int zstd_fini(struct zstd_data *data);
0031
0032 size_t zstd_compress_stream_to_records(struct zstd_data *data, void *dst, size_t dst_size,
0033                        void *src, size_t src_size, size_t max_record_size,
0034                        size_t process_header(void *record, size_t increment));
0035
0036 size_t zstd_decompress_stream(struct zstd_data *data, void *src, size_t src_size,
0037                   void *dst, size_t dst_size);
0038 #else /* !HAVE_ZSTD_SUPPORT */
0039
0040 static inline int zstd_init(struct zstd_data *data __maybe_unused, int level __maybe_unused)
0041 {
0042     return 0;
0043 }
0044
0045 static inline int zstd_fini(struct zstd_data *data __maybe_unused)
0046 {
0047     return 0;
0048 }
0049
0050 static inline
0051 size_t zstd_compress_stream_to_records(struct zstd_data *data __maybe_unused,
0052                        void *dst __maybe_unused, size_t dst_size __maybe_unused,
0053                        void *src __maybe_unused, size_t src_size __maybe_unused,
0054                        size_t max_record_size __maybe_unused,
0055                        size_t process_header(void *record, size_t increment) __maybe_unused)
0056 {
0057     return 0;
0058 }
0059
0060 static inline size_t zstd_decompress_stream(struct zstd_data *data __maybe_unused, void *src __maybe_unused,
0061                         size_t src_size __maybe_unused, void *dst __maybe_unused,
0062                         size_t dst_size __maybe_unused)
0063 {
0064     return 0;
0065 }
0066 #endif
0067
0068 #endif /* PERF_COMPRESS_H */