--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mupdf-source/thirdparty/openjpeg/src/lib/openjp2/cio.h	Mon Sep 15 11:43:07 2025 +0200
@@ -0,0 +1,412 @@
+/*
+ * The copyright in this software is being made available under the 2-clauses
+ * BSD License, included below. This software may be subject to other third
+ * party and contributor rights, including patent rights, and no such rights
+ * are granted under this license.
+ *
+ * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
+ * Copyright (c) 2002-2014, Professor Benoit Macq
+ * Copyright (c) 2001-2003, David Janssens
+ * Copyright (c) 2002-2003, Yannick Verschueren
+ * Copyright (c) 2003-2007, Francois-Olivier Devaux
+ * Copyright (c) 2003-2014, Antonin Descampe
+ * Copyright (c) 2005, Herve Drolon, FreeImage Team
+ * Copyright (c) 2008, 2011-2012, Centre National d'Etudes Spatiales (CNES), FR
+ * Copyright (c) 2012, CS Systemes d'Information, France
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef OPJ_CIO_H
+#define OPJ_CIO_H
+/**
+@file cio.h
+@brief Implementation of a byte input-output process (CIO)
+
+The functions in CIO.C have for goal to realize a byte input / output process.
+*/
+
+/** @defgroup CIO CIO - byte input-output stream */
+/*@{*/
+
+#include "opj_config_private.h"
+
+/* ----------------------------------------------------------------------- */
+
+#if defined(OPJ_BIG_ENDIAN)
+#define opj_write_bytes     opj_write_bytes_BE
+#define opj_read_bytes      opj_read_bytes_BE
+#define opj_write_double    opj_write_double_BE
+#define opj_read_double     opj_read_double_BE
+#define opj_write_float     opj_write_float_BE
+#define opj_read_float      opj_read_float_BE
+#else
+#define opj_write_bytes     opj_write_bytes_LE
+#define opj_read_bytes      opj_read_bytes_LE
+#define opj_write_double    opj_write_double_LE
+#define opj_read_double     opj_read_double_LE
+#define opj_write_float     opj_write_float_LE
+#define opj_read_float      opj_read_float_LE
+#endif
+
+
+#define OPJ_STREAM_STATUS_OUTPUT  0x1U
+#define OPJ_STREAM_STATUS_INPUT   0x2U
+#define OPJ_STREAM_STATUS_END     0x4U
+#define OPJ_STREAM_STATUS_ERROR   0x8U
+
+/**
+Byte input-output stream.
+*/
+typedef struct opj_stream_private {
+    /**
+     * User data, be it files, ... The actual data depends on the type of the stream.
+     */
+    void *                  m_user_data;
+
+    /**
+     * Pointer to function to free m_user_data (NULL at initialization)
+     * when destroying the stream. If pointer is NULL the function is not
+     * called and the m_user_data is not freed (even if non-NULL).
+     */
+    opj_stream_free_user_data_fn        m_free_user_data_fn;
+
+    /**
+     * User data length
+     */
+    OPJ_UINT64              m_user_data_length;
+
+    /**
+     * Pointer to actual read function (NULL at the initialization of the cio.
+     */
+    opj_stream_read_fn      m_read_fn;
+
+    /**
+     * Pointer to actual write function (NULL at the initialization of the cio.
+     */
+    opj_stream_write_fn     m_write_fn;
+
+    /**
+     * Pointer to actual skip function (NULL at the initialization of the cio.
+     * There is no seek function to prevent from back and forth slow procedures.
+     */
+    opj_stream_skip_fn      m_skip_fn;
+
+    /**
+     * Pointer to actual seek function (if available).
+     */
+    opj_stream_seek_fn      m_seek_fn;
+
+    /**
+     * Actual data stored into the stream if read from. Data is read by chunk of fixed size.
+     * you should never access this data directly.
+     */
+    OPJ_BYTE *                  m_stored_data;
+
+    /**
+     * Pointer to the current read data.
+     */
+    OPJ_BYTE *                  m_current_data;
+
+    /**
+    * FIXME DOC.
+    */
+    OPJ_OFF_T(* m_opj_skip)(struct opj_stream_private *, OPJ_OFF_T,
+                            struct opj_event_mgr *);
+
+    /**
+    * FIXME DOC.
+    */
+    OPJ_BOOL(* m_opj_seek)(struct opj_stream_private *, OPJ_OFF_T,
+                           struct opj_event_mgr *);
+
+    /**
+     * number of bytes containing in the buffer.
+     */
+    OPJ_SIZE_T          m_bytes_in_buffer;
+
+    /**
+     * The number of bytes read/written from the beginning of the stream
+     */
+    OPJ_OFF_T           m_byte_offset;
+
+    /**
+     * The size of the buffer.
+     */
+    OPJ_SIZE_T          m_buffer_size;
+
+    /**
+     * Flags to tell the status of the stream.
+     * Used with OPJ_STREAM_STATUS_* defines.
+     */
+    OPJ_UINT32 m_status;
+
+}
+opj_stream_private_t;
+
+/** @name Exported functions (see also openjpeg.h) */
+/*@{*/
+/* ----------------------------------------------------------------------- */
+/**
+ * Write some bytes to the given data buffer, this function is used in Big Endian cpus.
+ * @param p_buffer      pointer the data buffer to write data to.
+ * @param p_value       the value to write
+ * @param p_nb_bytes    the number of bytes to write
+*/
+void opj_write_bytes_BE(OPJ_BYTE * p_buffer, OPJ_UINT32 p_value,
+                        OPJ_UINT32 p_nb_bytes);
+
+/**
+ * Reads some bytes from the given data buffer, this function is used in Big Endian cpus.
+ * @param p_buffer      pointer the data buffer to read data from.
+ * @param p_value       pointer to the value that will store the data.
+ * @param p_nb_bytes    the nb bytes to read.
+ * @return              the number of bytes read or -1 if an error occurred.
+ */
+void opj_read_bytes_BE(const OPJ_BYTE * p_buffer, OPJ_UINT32 * p_value,
+                       OPJ_UINT32 p_nb_bytes);
+
+/**
+ * Write some bytes to the given data buffer, this function is used in Little Endian cpus.
+ * @param p_buffer      pointer the data buffer to write data to.
+ * @param p_value       the value to write
+ * @param p_nb_bytes    the number of bytes to write
+ * @return              the number of bytes written or -1 if an error occurred
+*/
+void opj_write_bytes_LE(OPJ_BYTE * p_buffer, OPJ_UINT32 p_value,
+                        OPJ_UINT32 p_nb_bytes);
+
+/**
+ * Reads some bytes from the given data buffer, this function is used in Little Endian cpus.
+ * @param p_buffer      pointer the data buffer to read data from.
+ * @param p_value       pointer to the value that will store the data.
+ * @param p_nb_bytes    the nb bytes to read.
+ * @return              the number of bytes read or -1 if an error occurred.
+ */
+void opj_read_bytes_LE(const OPJ_BYTE * p_buffer, OPJ_UINT32 * p_value,
+                       OPJ_UINT32 p_nb_bytes);
+
+
+/**
+ * Write some bytes to the given data buffer, this function is used in Little Endian cpus.
+ * @param p_buffer      pointer the data buffer to write data to.
+ * @param p_value       the value to write
+ */
+void opj_write_double_LE(OPJ_BYTE * p_buffer, OPJ_FLOAT64 p_value);
+
+/***
+ * Write some bytes to the given data buffer, this function is used in Big Endian cpus.
+ * @param p_buffer      pointer the data buffer to write data to.
+ * @param p_value       the value to write
+ */
+void opj_write_double_BE(OPJ_BYTE * p_buffer, OPJ_FLOAT64 p_value);
+
+/**
+ * Reads some bytes from the given data buffer, this function is used in Little Endian cpus.
+ * @param p_buffer      pointer the data buffer to read data from.
+ * @param p_value       pointer to the value that will store the data.
+ */
+void opj_read_double_LE(const OPJ_BYTE * p_buffer, OPJ_FLOAT64 * p_value);
+
+/**
+ * Reads some bytes from the given data buffer, this function is used in Big Endian cpus.
+ * @param p_buffer      pointer the data buffer to read data from.
+ * @param p_value       pointer to the value that will store the data.
+ */
+void opj_read_double_BE(const OPJ_BYTE * p_buffer, OPJ_FLOAT64 * p_value);
+
+/**
+ * Reads some bytes from the given data buffer, this function is used in Little Endian cpus.
+ * @param p_buffer      pointer the data buffer to read data from.
+ * @param p_value       pointer to the value that will store the data.
+ */
+void opj_read_float_LE(const OPJ_BYTE * p_buffer, OPJ_FLOAT32 * p_value);
+
+/**
+ * Reads some bytes from the given data buffer, this function is used in Big Endian cpus.
+ * @param p_buffer      pointer the data buffer to read data from.
+ * @param p_value       pointer to the value that will store the data.
+ */
+void opj_read_float_BE(const OPJ_BYTE * p_buffer, OPJ_FLOAT32 * p_value);
+
+/**
+ * Write some bytes to the given data buffer, this function is used in Little Endian cpus.
+ * @param p_buffer      pointer the data buffer to write data to.
+ * @param p_value       the value to write
+ */
+void opj_write_float_LE(OPJ_BYTE * p_buffer, OPJ_FLOAT32 p_value);
+
+/***
+ * Write some bytes to the given data buffer, this function is used in Big Endian cpus.
+ * @param p_buffer      pointer the data buffer to write data to.
+ * @param p_value       the value to write
+ */
+void opj_write_float_BE(OPJ_BYTE * p_buffer, OPJ_FLOAT32 p_value);
+
+/**
+ * Reads some bytes from the stream.
+ * @param       p_stream    the stream to read data from.
+ * @param       p_buffer    pointer to the data buffer that will receive the data.
+ * @param       p_size      number of bytes to read.
+ * @param       p_event_mgr the user event manager to be notified of special events.
+ * @return      the number of bytes read, or -1 if an error occurred or if the stream is at the end.
+ */
+OPJ_SIZE_T opj_stream_read_data(opj_stream_private_t * p_stream,
+                                OPJ_BYTE * p_buffer, OPJ_SIZE_T p_size, struct opj_event_mgr * p_event_mgr);
+
+/**
+ * Writes some bytes to the stream.
+ * @param       p_stream    the stream to write data to.
+ * @param       p_buffer    pointer to the data buffer holds the data to be writtent.
+ * @param       p_size      number of bytes to write.
+ * @param       p_event_mgr the user event manager to be notified of special events.
+ * @return      the number of bytes writtent, or -1 if an error occurred.
+ */
+OPJ_SIZE_T opj_stream_write_data(opj_stream_private_t * p_stream,
+                                 const OPJ_BYTE * p_buffer, OPJ_SIZE_T p_size,
+                                 struct opj_event_mgr * p_event_mgr);
+
+/**
+ * Writes the content of the stream buffer to the stream.
+ * @param       p_stream    the stream to write data to.
+ * @param       p_event_mgr the user event manager to be notified of special events.
+ * @return      true if the data could be flushed, false else.
+ */
+OPJ_BOOL opj_stream_flush(opj_stream_private_t * p_stream,
+                          struct opj_event_mgr * p_event_mgr);
+
+/**
+ * Skips a number of bytes from the stream.
+ * @param       p_stream    the stream to skip data from.
+ * @param       p_size      the number of bytes to skip.
+ * @param       p_event_mgr the user event manager to be notified of special events.
+ * @return      the number of bytes skipped, or -1 if an error occurred.
+ */
+OPJ_OFF_T opj_stream_skip(opj_stream_private_t * p_stream, OPJ_OFF_T p_size,
+                          struct opj_event_mgr * p_event_mgr);
+
+/**
+ * Tells the byte offset on the stream (similar to ftell).
+ *
+ * @param       p_stream    the stream to get the information from.
+ *
+ * @return      the current position o fthe stream.
+ */
+OPJ_OFF_T opj_stream_tell(const opj_stream_private_t * p_stream);
+
+
+/**
+ * Get the number of bytes left before the end of the stream (similar to cio_numbytesleft).
+ *
+ * @param       p_stream    the stream to get the information from.
+ *
+ * @return      Number of bytes left before the end of the stream.
+ */
+OPJ_OFF_T opj_stream_get_number_byte_left(const opj_stream_private_t *
+        p_stream);
+
+/**
+ * Skips a number of bytes from the stream.
+ * @param       p_stream    the stream to skip data from.
+ * @param       p_size      the number of bytes to skip.
+ * @param       p_event_mgr the user event manager to be notified of special events.
+ * @return      the number of bytes skipped, or -1 if an error occurred.
+ */
+OPJ_OFF_T opj_stream_write_skip(opj_stream_private_t * p_stream,
+                                OPJ_OFF_T p_size, struct opj_event_mgr * p_event_mgr);
+
+/**
+ * Skips a number of bytes from the stream.
+ * @param       p_stream    the stream to skip data from.
+ * @param       p_size      the number of bytes to skip.
+ * @param       p_event_mgr the user event manager to be notified of special events.
+ * @return      the number of bytes skipped, or -1 if an error occurred.
+ */
+OPJ_OFF_T opj_stream_read_skip(opj_stream_private_t * p_stream,
+                               OPJ_OFF_T p_size, struct opj_event_mgr * p_event_mgr);
+
+/**
+ * Skips a number of bytes from the stream.
+ * @param       p_stream    the stream to skip data from.
+ * @param       p_size      the number of bytes to skip.
+ * @param       p_event_mgr the user event manager to be notified of special events.
+ * @return      OPJ_TRUE if success, or OPJ_FALSE if an error occurred.
+ */
+OPJ_BOOL opj_stream_read_seek(opj_stream_private_t * p_stream, OPJ_OFF_T p_size,
+                              struct opj_event_mgr * p_event_mgr);
+
+/**
+ * Skips a number of bytes from the stream.
+ * @param       p_stream    the stream to skip data from.
+ * @param       p_size      the number of bytes to skip.
+ * @param       p_event_mgr the user event manager to be notified of special events.
+ * @return      the number of bytes skipped, or -1 if an error occurred.
+ */
+OPJ_BOOL opj_stream_write_seek(opj_stream_private_t * p_stream,
+                               OPJ_OFF_T p_size, struct opj_event_mgr * p_event_mgr);
+
+/**
+ * Seeks a number of bytes from the stream.
+ * @param       p_stream    the stream to skip data from.
+ * @param       p_size      the number of bytes to skip.
+ * @param       p_event_mgr the user event manager to be notified of special events.
+ * @return      true if the stream is seekable.
+ */
+OPJ_BOOL opj_stream_seek(opj_stream_private_t * p_stream, OPJ_OFF_T p_size,
+                         struct opj_event_mgr * p_event_mgr);
+
+/**
+ * Tells if the given stream is seekable.
+ */
+OPJ_BOOL opj_stream_has_seek(const opj_stream_private_t * p_stream);
+
+/**
+ * FIXME DOC.
+ */
+OPJ_SIZE_T opj_stream_default_read(void * p_buffer, OPJ_SIZE_T p_nb_bytes,
+                                   void * p_user_data);
+
+/**
+ * FIXME DOC.
+ */
+OPJ_SIZE_T opj_stream_default_write(void * p_buffer, OPJ_SIZE_T p_nb_bytes,
+                                    void * p_user_data);
+
+/**
+ * FIXME DOC.
+ */
+OPJ_OFF_T opj_stream_default_skip(OPJ_OFF_T p_nb_bytes, void * p_user_data);
+
+/**
+ * FIXME DOC.
+ */
+OPJ_BOOL opj_stream_default_seek(OPJ_OFF_T p_nb_bytes, void * p_user_data);
+
+/* ----------------------------------------------------------------------- */
+/*@}*/
+
+/*@}*/
+
+
+#endif /* OPJ_CIO_H */
+