diff --git a/miniz.c b/miniz.c index 677a2a2..d3e7665 100644 --- a/miniz.c +++ b/miniz.c @@ -397,6 +397,32 @@ int mz_inflateInit(mz_streamp pStream) return mz_inflateInit2(pStream, MZ_DEFAULT_WINDOW_BITS); } +int mz_inflateReset(mz_streamp pStream) +{ + inflate_state *pDecomp; + if (!pStream) + return MZ_STREAM_ERROR; + + pStream->data_type = 0; + pStream->adler = 0; + pStream->msg = NULL; + pStream->total_in = 0; + pStream->total_out = 0; + pStream->reserved = 0; + + pDecomp = (inflate_state *)pStream->state; + + tinfl_init(&pDecomp->m_decomp); + pDecomp->m_dict_ofs = 0; + pDecomp->m_dict_avail = 0; + pDecomp->m_last_status = TINFL_STATUS_NEEDS_MORE_INPUT; + pDecomp->m_first_call = 1; + pDecomp->m_has_flushed = 0; + /* pDecomp->m_window_bits = window_bits */; + + return MZ_OK; +} + int mz_inflate(mz_streamp pStream, int flush) { inflate_state *pState; diff --git a/miniz.h b/miniz.h index ad7e357..17f2c3b 100644 --- a/miniz.h +++ b/miniz.h @@ -24,7 +24,7 @@ zlib replacement in many apps: The z_stream struct, optional memory allocation callbacks deflateInit/deflateInit2/deflate/deflateReset/deflateEnd/deflateBound - inflateInit/inflateInit2/inflate/inflateEnd + inflateInit/inflateInit2/inflate/inflateReset/inflateEnd compress, compress2, compressBound, uncompress CRC-32, Adler-32 - Using modern, minimal code size, CPU cache friendly routines. Supports raw deflate streams or standard zlib streams with adler-32 checking. @@ -362,6 +362,9 @@ int mz_inflateInit(mz_streamp pStream); /* window_bits must be MZ_DEFAULT_WINDOW_BITS (to parse zlib header/footer) or -MZ_DEFAULT_WINDOW_BITS (raw deflate). */ int mz_inflateInit2(mz_streamp pStream, int window_bits); +/* Quickly resets a compressor without having to reallocate anything. Same as calling mz_inflateEnd() followed by mz_inflateInit()/mz_inflateInit2(). */ +int mz_inflateReset(mz_streamp pStream); + /* Decompresses the input stream to the output, consuming only as much of the input as needed, and writing as much to the output as possible. */ /* Parameters: */ /* pStream is the stream to read from and write to. You must initialize/update the next_in, avail_in, next_out, and avail_out members. */ @@ -445,6 +448,7 @@ typedef void *const voidpc; #define compressBound mz_compressBound #define inflateInit mz_inflateInit #define inflateInit2 mz_inflateInit2 +#define inflateReset mz_inflateReset #define inflate mz_inflate #define inflateEnd mz_inflateEnd #define uncompress mz_uncompress