--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/include/mupdf/fitz/compress.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,132 @@
+// Copyright (C) 2004-2025 Artifex Software, Inc.
+//
+// This file is part of MuPDF.
+//
+// MuPDF is free software: you can redistribute it and/or modify it under the
+// terms of the GNU Affero General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option)
+// any later version.
+//
+// MuPDF 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 Affero General Public License for more
+// details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with MuPDF. If not, see <https://www.gnu.org/licenses/agpl-3.0.en.html>
+//
+// Alternative licensing terms are available from the licensor.
+// For commercial licensing, see <https://www.artifex.com/> or contact
+// Artifex Software, Inc., 39 Mesa Street, Suite 108A, San Francisco,
+// CA 94129, USA, for further information.
+
+#ifndef MUPDF_FITZ_COMPRESS_H
+#define MUPDF_FITZ_COMPRESS_H
+
+#include "mupdf/fitz/system.h"
+#include "mupdf/fitz/buffer.h"
+#include "mupdf/fitz/pixmap.h"
+
+typedef enum
+{
+	FZ_DEFLATE_NONE = 0,
+	FZ_DEFLATE_BEST_SPEED = 1,
+	FZ_DEFLATE_BEST = 9,
+	FZ_DEFLATE_DEFAULT = -1
+} fz_deflate_level;
+
+/**
+	Returns the upper bound on the
+	size of flated data of length size.
+ */
+size_t fz_deflate_bound(fz_context *ctx, size_t size);
+
+/**
+	Compress source_length bytes of data starting
+	at source, into a buffer of length *compressed_length, starting at
+	dest. *compressed_length will be updated on exit to contain the size
+	actually used.
+ */
+void fz_deflate(fz_context *ctx, unsigned char *dest, size_t *compressed_length, const unsigned char *source, size_t source_length, fz_deflate_level level);
+
+/**
+	Compress source_length bytes of data starting
+	at source, into a new memory block malloced for that purpose.
+	*compressed_length is updated on exit to contain the size used.
+	Ownership of the block is returned from this function, and the
+	caller is therefore responsible for freeing it. The block may be
+	considerably larger than is actually required. The caller is
+	free to fz_realloc it down if it wants to.
+*/
+unsigned char *fz_new_deflated_data(fz_context *ctx, size_t *compressed_length, const unsigned char *source, size_t source_length, fz_deflate_level level);
+
+/**
+	Compress the contents of a fz_buffer into a
+	new block malloced for that purpose. *compressed_length is
+	updated on exit to contain the size used. Ownership of the block
+	is returned from this function, and the caller is therefore
+	responsible for freeing it. The block may be considerably larger
+	than is actually required. The caller is free to fz_realloc it
+	down if it wants to.
+*/
+unsigned char *fz_new_deflated_data_from_buffer(fz_context *ctx, size_t *compressed_length, fz_buffer *buffer, fz_deflate_level level);
+
+typedef enum
+{
+	FZ_BROTLI_NONE = 0,
+	FZ_BROTLI_BEST_SPEED = 1,
+	FZ_BROTLI_BEST = 11,
+	FZ_BROTLI_DEFAULT = 6 /* Guess */
+} fz_brotli_level;
+
+/**
+	Returns the upper bound on the
+	size of brotli compressed data of length size.
+ */
+size_t fz_brotli_bound(fz_context *ctx, size_t size);
+
+/**
+	Compress source_length bytes of data starting
+	at source, into a buffer of length *destLen, starting at dest.
+	*compressed_length will be updated on exit to contain the size
+	actually used.
+ */
+void fz_compress_brotli(fz_context *ctx, unsigned char *dest, size_t *compressed_length, const unsigned char *source, size_t source_length, fz_brotli_level level);
+
+/**
+	Compress source_length bytes of data starting
+	at source, into a new memory block malloced for that purpose.
+	*compressed_length is updated on exit to contain the size used.
+	Ownership of the block is returned from this function, and the
+	caller is therefore responsible for freeing it. The block may be
+	considerably larger than is actually required. The caller is
+	free to fz_realloc it down if it wants to.
+*/
+unsigned char *fz_new_brotli_data(fz_context *ctx, size_t *compressed_length, const unsigned char *source, size_t source_length, fz_brotli_level level);
+
+/**
+	Compress the contents of a fz_buffer into a
+	new block malloced for that purpose. *compressed_length is
+	updated on exit to contain the size used. Ownership of the block
+	is returned from this function, and the caller is therefore
+	responsible for freeing it. The block may be considerably larger
+	than is actually required. The caller is free to fz_realloc it
+	down if it wants to.
+*/
+unsigned char *fz_new_brotli_data_from_buffer(fz_context *ctx, size_t *compressed_length, fz_buffer *buffer, fz_brotli_level level);
+
+/**
+	Compress bitmap data as CCITT Group 3 1D fax image.
+	Creates a stream assuming the default PDF parameters,
+	except the number of columns.
+*/
+fz_buffer *fz_compress_ccitt_fax_g3(fz_context *ctx, const unsigned char *data, int columns, int rows, ptrdiff_t stride);
+
+/**
+	Compress bitmap data as CCITT Group 4 2D fax image.
+	Creates a stream assuming the default PDF parameters, except
+	K=-1 and the number of columns.
+*/
+fz_buffer *fz_compress_ccitt_fax_g4(fz_context *ctx, const unsigned char *data, int columns, int rows, ptrdiff_t stride);
+
+#endif