forked from bartvdbraak/blender
5fae2503bf
This reverts commit f12204196fb1ee985ab9745cf9c70877601145f9. Campbell, sorry. have to revert this for the time being. We've missed some very important bits, such as: - FFmpeg is usually linked against OpenJPEG - OIIO needs OpenJPEG as well. For FFmpeg issues we can either disable OpenJPEG there (since we don't really use it), or bump FFmpeg to version 3.1.1 which can use either of OpenJPEG 1.5 or 2.1. For OIIO we do need OpenJPEG support (otherwise Cycles will not be able to use j2k/j2c textures) and currently there is NO solution to make OIIO working with OpenJPEG 2.1. According to Matthias Fauconneau (aka mfv) Larry is working on the patch to get OIIO work with OpenJPEG 2.1, but it'll take some time still. I've tried to look into support of some sort of build system flag and do ifdefs, but it all becomes quite nasty, especially with bundled OpenJPEG bumped to 2.1. Surely such an update is something we'll have to apply to but at this exact moment it causes quite some pain for all developers. Suggest to wait for until OIIO supports OpenJPEG 2.1 and then go with the updates for real.
201 lines
5.9 KiB
C
201 lines
5.9 KiB
C
/*
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* Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
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* Copyright (c) 2002-2007, Professor Benoit Macq
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* Copyright (c) 2001-2003, David Janssens
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* Copyright (c) 2002-2003, Yannick Verschueren
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* Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
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* Copyright (c) 2005, Herve Drolon, FreeImage Team
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __MQC_H
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#define __MQC_H
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/**
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@file mqc.h
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@brief Implementation of an MQ-Coder (MQC)
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The functions in MQC.C have for goal to realize the MQ-coder operations. The functions
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in MQC.C are used by some function in T1.C.
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*/
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/** @defgroup MQC MQC - Implementation of an MQ-Coder */
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/*@{*/
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/**
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This struct defines the state of a context.
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*/
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typedef struct opj_mqc_state {
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/** the probability of the Least Probable Symbol (0.75->0x8000, 1.5->0xffff) */
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unsigned int qeval;
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/** the Most Probable Symbol (0 or 1) */
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int mps;
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/** next state if the next encoded symbol is the MPS */
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struct opj_mqc_state *nmps;
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/** next state if the next encoded symbol is the LPS */
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struct opj_mqc_state *nlps;
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} opj_mqc_state_t;
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#define MQC_NUMCTXS 19
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/**
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MQ coder
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*/
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typedef struct opj_mqc {
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unsigned int c;
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unsigned int a;
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unsigned int ct;
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unsigned char *bp;
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unsigned char *start;
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unsigned char *end;
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opj_mqc_state_t *ctxs[MQC_NUMCTXS];
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opj_mqc_state_t **curctx;
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#ifdef MQC_PERF_OPT
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unsigned char *buffer;
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#endif
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} opj_mqc_t;
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/** @name Exported functions */
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/*@{*/
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/* ----------------------------------------------------------------------- */
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/**
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Create a new MQC handle
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@return Returns a new MQC handle if successful, returns NULL otherwise
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*/
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opj_mqc_t* mqc_create(void);
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/**
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Destroy a previously created MQC handle
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@param mqc MQC handle to destroy
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*/
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void mqc_destroy(opj_mqc_t *mqc);
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/**
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Return the number of bytes written/read since initialisation
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@param mqc MQC handle
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@return Returns the number of bytes already encoded
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*/
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int mqc_numbytes(opj_mqc_t *mqc);
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/**
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Reset the states of all the context of the coder/decoder
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(each context is set to a state where 0 and 1 are more or less equiprobable)
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@param mqc MQC handle
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*/
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void mqc_resetstates(opj_mqc_t *mqc);
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/**
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Set the state of a particular context
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@param mqc MQC handle
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@param ctxno Number that identifies the context
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@param msb The MSB of the new state of the context
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@param prob Number that identifies the probability of the symbols for the new state of the context
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*/
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void mqc_setstate(opj_mqc_t *mqc, int ctxno, int msb, int prob);
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/**
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Initialize the encoder
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@param mqc MQC handle
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@param bp Pointer to the start of the buffer where the bytes will be written
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*/
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void mqc_init_enc(opj_mqc_t *mqc, unsigned char *bp);
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/**
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Set the current context used for coding/decoding
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@param mqc MQC handle
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@param ctxno Number that identifies the context
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*/
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#define mqc_setcurctx(mqc, ctxno) (mqc)->curctx = &(mqc)->ctxs[(int)(ctxno)]
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/**
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Encode a symbol using the MQ-coder
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@param mqc MQC handle
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@param d The symbol to be encoded (0 or 1)
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*/
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void mqc_encode(opj_mqc_t *mqc, int d);
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/**
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Flush the encoder, so that all remaining data is written
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@param mqc MQC handle
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*/
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void mqc_flush(opj_mqc_t *mqc);
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/**
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BYPASS mode switch, initialization operation.
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JPEG 2000 p 505.
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<h2>Not fully implemented and tested !!</h2>
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@param mqc MQC handle
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*/
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void mqc_bypass_init_enc(opj_mqc_t *mqc);
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/**
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BYPASS mode switch, coding operation.
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JPEG 2000 p 505.
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<h2>Not fully implemented and tested !!</h2>
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@param mqc MQC handle
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@param d The symbol to be encoded (0 or 1)
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*/
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void mqc_bypass_enc(opj_mqc_t *mqc, int d);
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/**
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BYPASS mode switch, flush operation
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<h2>Not fully implemented and tested !!</h2>
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@param mqc MQC handle
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@return Returns 1 (always)
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*/
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int mqc_bypass_flush_enc(opj_mqc_t *mqc);
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/**
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RESET mode switch
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@param mqc MQC handle
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*/
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void mqc_reset_enc(opj_mqc_t *mqc);
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/**
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RESTART mode switch (TERMALL)
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@param mqc MQC handle
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@return Returns 1 (always)
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*/
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int mqc_restart_enc(opj_mqc_t *mqc);
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/**
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RESTART mode switch (TERMALL) reinitialisation
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@param mqc MQC handle
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*/
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void mqc_restart_init_enc(opj_mqc_t *mqc);
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/**
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ERTERM mode switch (PTERM)
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@param mqc MQC handle
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*/
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void mqc_erterm_enc(opj_mqc_t *mqc);
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/**
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SEGMARK mode switch (SEGSYM)
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@param mqc MQC handle
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*/
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void mqc_segmark_enc(opj_mqc_t *mqc);
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/**
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Initialize the decoder
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@param mqc MQC handle
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@param bp Pointer to the start of the buffer from which the bytes will be read
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@param len Length of the input buffer
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*/
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void mqc_init_dec(opj_mqc_t *mqc, unsigned char *bp, int len);
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/**
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Decode a symbol
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@param mqc MQC handle
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@return Returns the decoded symbol (0 or 1)
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*/
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int mqc_decode(opj_mqc_t *const mqc);
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/* ----------------------------------------------------------------------- */
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/*@}*/
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/*@}*/
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#endif /* __MQC_H */
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