--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/jbig2dec/jbig2_segment.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,54 @@
+/* Copyright (C) 2001-2023 Artifex Software, Inc.
+   All Rights Reserved.
+
+   This software is provided AS-IS with no warranty, either express or
+   implied.
+
+   This software is distributed under license and may not be copied,
+   modified or distributed except as expressly authorized under the terms
+   of the license contained in the file LICENSE in this distribution.
+
+   Refer to licensing information at http://www.artifex.com or contact
+   Artifex Software, Inc.,  39 Mesa Street, Suite 108A, San Francisco,
+   CA 94129, USA, for further information.
+*/
+
+/*
+    jbig2dec
+*/
+
+#ifndef _JBIG2_SEGMENT_H
+#define _JBIG2_SEGMENT_H
+
+/* segment header routines */
+
+struct _Jbig2Segment {
+    uint32_t number;
+    uint8_t flags;
+    uint32_t page_association;
+    size_t data_length;
+    int referred_to_segment_count;
+    uint32_t *referred_to_segments;
+    uint32_t rows;
+    void *result;
+};
+
+Jbig2Segment *jbig2_parse_segment_header(Jbig2Ctx *ctx, uint8_t *buf, size_t buf_size, size_t *p_header_size);
+int jbig2_parse_segment(Jbig2Ctx *ctx, Jbig2Segment *segment, const uint8_t *segment_data);
+void jbig2_free_segment(Jbig2Ctx *ctx, Jbig2Segment *segment);
+Jbig2Segment *jbig2_find_segment(Jbig2Ctx *ctx, uint32_t number);
+
+/* region segment info */
+
+typedef struct {
+    uint32_t width;
+    uint32_t height;
+    uint32_t x;
+    uint32_t y;
+    Jbig2ComposeOp op;
+    uint8_t flags;
+} Jbig2RegionSegmentInfo;
+
+void jbig2_get_region_segment_info(Jbig2RegionSegmentInfo *info, const uint8_t *segment_data);
+
+#endif /* _JBIG2_SEGMENT_H */