LXR linux/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#ifdef HAVE_ZSTD_SUPPORT
   7#include <zstd.h>
   8#endif
   9
  10#ifdef HAVE_ZLIB_SUPPORT
  11int gzip_decompress_to_file(const char *input, int output_fd);
  12bool gzip_is_compressed(const char *input);
  13#endif
  14
  15#ifdef HAVE_LZMA_SUPPORT
  16int lzma_decompress_to_file(const char *input, int output_fd);
  17bool lzma_is_compressed(const char *input);
  18#endif
  19
  20struct 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
  29int zstd_init(struct zstd_data *data, int level);
  30int zstd_fini(struct zstd_data *data);
  31
  32size_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
  36size_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
  40static inline int zstd_init(struct zstd_data *data __maybe_unused, int level __maybe_unused)
  41{
  42        return 0;
  43}
  44
  45static inline int zstd_fini(struct zstd_data *data __maybe_unused)
  46{
  47        return 0;
  48}
  49
  50static inline
  51size_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
  60static 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