/* * Snappy module * Copyright (c) Luca Barbato * * This file is part of Libav. * * Libav is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * Libav is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file * Snappy decompression * * Snappy is a compression/decompression algorithm that does not aim for * maximum compression, but rather for very high speeds and reasonable * compression. * * http://en.wikipedia.org/wiki/Snappy_%28software%29 */ #ifndef AVCODEC_SNAPPY_H #define AVCODEC_SNAPPY_H #include <stdint.h> #include "bytestream.h" /** * Get the uncompressed length of an input buffer compressed using the Snappy * algorithm. The GetByteContext is not advanced. * * @param gb input GetByteContext. * @return A positive length on success, AVERROR otherwise. */ int64_t ff_snappy_peek_uncompressed_length(GetByteContext *gb); /** * Decompress an input buffer using Snappy algorithm. * * @param gb input GetByteContext. * @param buf input buffer pointer. * @param size input/output on input, the size of buffer, on output, the size * of the uncompressed data. * @return 0 if success, AVERROR otherwise. */ int ff_snappy_uncompress(GetByteContext *gb, uint8_t *buf, int64_t *size); #endif /* AVCODEC_SNAPPY_H */