Implement Snappy decompression

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

1 files changed, 51 insertions, 0 deletions

diff --git a/libavcodec/snappy.h b/libavcodec/snappy.h
new file mode 100644
index 0000000000..96666a814d
--- /dev/null
+++ b/libavcodec/snappy.h
@@ -0,0 +1,51 @@
+/*
+ * 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"
+
+/**
+ * Decompress an input buffer using Snappy algorithm. Caller is
+ * responsible of freeing the memory allocated in buf.
+ *
+ * @param gb    input GetByteContext.
+ * @param buf   output buffer pointer.
+ * @param size  output buffer size.
+ * @return      0 if success, AVERROR otherwise.
+ */
+int ff_snappy_uncompress(GetByteContext *gb, uint8_t **buf, int64_t *size);
+
+#endif /* AVCODEC_SNAPPY_H */