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+/*
+Copyright 2011 Google Inc. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+Author: lode.vandevenne@gmail.com (Lode Vandevenne)
+Author: jyrki.alakuijala@gmail.com (Jyrki Alakuijala)
+*/
+
+#ifndef ZOPFLI_DEFLATE_H_
+#define ZOPFLI_DEFLATE_H_
+
+/*
+Functions to compress according to the DEFLATE specification, using the
+"squeeze" LZ77 compression backend.
+*/
+
+#include "zopfli.h"
+
+/*
+Compresses according to the deflate specification and append the compressed
+result to the output.
+This function will usually output multiple deflate blocks. If final is 1, then
+the final bit will be set on the last block.
+
+options: global program options
+btype: the deflate block type. Use 2 for best compression.
+  -0: non compressed blocks (00)
+  -1: blocks with fixed tree (01)
+  -2: blocks with dynamic tree (10)
+final: whether this is the last section of the input, sets the final bit to the
+  last deflate block.
+in: the input bytes
+insize: number of input bytes
+bp: bit pointer for the output array. This must initially be 0, and for
+  consecutive calls must be reused (it can have values from 0-7). This is
+  because deflate appends blocks as bit-based data, rather than on byte
+  boundaries.
+out: pointer to the dynamic output array to which the result is appended. Must
+  be freed after use.
+outsize: pointer to the dynamic output array size.
+*/
+void ZopfliDeflate(const ZopfliOptions* options, int btype, int final,
+                   const unsigned char* in, size_t insize,
+                   unsigned char* bp, unsigned char** out, size_t* outsize);
+
+/*
+Like ZopfliDeflate, but allows to specify start and end byte with instart and
+inend. Only that part is compressed, but earlier bytes are still used for the
+back window.
+*/
+void ZopfliDeflatePart(const ZopfliOptions* options, int btype, int final,
+                       const unsigned char* in, size_t instart, size_t inend,
+                       unsigned char* bp, unsigned char** out,
+                       size_t* outsize);
+
+/*
+Calculates block size in bits.
+litlens: lz77 lit/lengths
+dists: ll77 distances
+lstart: start of block
+lend: end of block (not inclusive)
+*/
+double ZopfliCalculateBlockSize(const unsigned short* litlens,
+                                const unsigned short* dists,
+                                size_t lstart, size_t lend, int btype);
+#endif  /* ZOPFLI_DEFLATE_H_ */