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ext/zstd/contrib/seekable_format/zstd_seekable.h  view on Meta::CPAN

/*-****************************************************************************
*  Seekable decompression - HowTo
*  A ZSTD_seekable object is required to tracking the seekTable.
*
*  Call ZSTD_seekable_init* to initialize a ZSTD_seekable object with the
*  the seek table provided in the input.
*  There are three modes for ZSTD_seekable_init:
*    - ZSTD_seekable_initBuff() : An in-memory API.  The data contained in
*      `src` should be the entire seekable file, including the seek table.
*      `src` should be kept alive and unmodified until the ZSTD_seekable object
*      is freed or reset.
*    - ZSTD_seekable_initFile() : A simplified file API using stdio.  fread and
*      fseek will be used to access the required data for building the seek
*      table and doing decompression operations.  `src` should not be closed
*      or modified until the ZSTD_seekable object is freed or reset.
*    - ZSTD_seekable_initAdvanced() : A general API allowing the client to
*      provide its own read and seek callbacks.
*        + ZSTD_seekable_read() : read exactly `n` bytes into `buffer`.
*                                 Premature EOF should be treated as an error.
*        + ZSTD_seekable_seek() : seek the read head to `offset` from `origin`,