tools/perf/util/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 <sys/types.h>
   8 #ifdef HAVE_ZSTD_SUPPORT
   9 #include <zstd.h>
  10 #endif
  11
  12 #ifdef HAVE_ZLIB_SUPPORT
  13 int gzip_decompress_to_file(const char *input, int output_fd);
  14 bool gzip_is_compressed(const char *input);
  15 #endif
  16
  17 #ifdef HAVE_LZMA_SUPPORT
  18 int lzma_decompress_to_file(const char *input, int output_fd);
  19 bool lzma_is_compressed(const char *input);
  20 #endif
  21
  22 struct zstd_data {
  23 #ifdef HAVE_ZSTD_SUPPORT
  24         ZSTD_CStream    *cstream;
  25         ZSTD_DStream    *dstream;
  26         int comp_level;
  27 #endif
  28 };
  29
  30 #ifdef HAVE_ZSTD_SUPPORT
  31
  32 int zstd_init(struct zstd_data *data, int level);
  33 int zstd_fini(struct zstd_data *data);
  34
  35 ssize_t zstd_compress_stream_to_records(struct zstd_data *data, void *dst, size_t dst_size,
  36                                        void *src, size_t src_size, size_t max_record_size,
  37                                        size_t process_header(void *record, size_t increment));
  38
  39 size_t zstd_decompress_stream(struct zstd_data *data, void *src, size_t src_size,
  40                               void *dst, size_t dst_size);
  41 #else /* !HAVE_ZSTD_SUPPORT */
  42
  43 static inline int zstd_init(struct zstd_data *data __maybe_unused, int level __maybe_unused)
  44 {
  45         return 0;
  46 }
  47
  48 static inline int zstd_fini(struct zstd_data *data __maybe_unused)
  49 {
  50         return 0;
  51 }
  52
  53 static inline
  54 ssize_t zstd_compress_stream_to_records(struct zstd_data *data __maybe_unused,
  55                                        void *dst __maybe_unused, size_t dst_size __maybe_unused,
  56                                        void *src __maybe_unused, size_t src_size __maybe_unused,
  57                                        size_t max_record_size __maybe_unused,
  58                                        size_t process_header(void *record, size_t increment) __maybe_unused)
  59 {
  60         return 0;
  61 }
  62
  63 static inline size_t zstd_decompress_stream(struct zstd_data *data __maybe_unused, void *src __maybe_unused,
  64                                             size_t src_size __maybe_unused, void *dst __maybe_unused,
  65                                             size_t dst_size __maybe_unused)
  66 {
  67         return 0;
  68 }
  69 #endif
  70
  71 #endif /* PERF_COMPRESS_H */