diff options
Diffstat (limited to 'src/3rdparty/jasper/src/libjasper/jpc/jpc_mqdec.c')
| -rw-r--r-- | src/3rdparty/jasper/src/libjasper/jpc/jpc_mqdec.c | 306 |
1 files changed, 0 insertions, 306 deletions
diff --git a/src/3rdparty/jasper/src/libjasper/jpc/jpc_mqdec.c b/src/3rdparty/jasper/src/libjasper/jpc/jpc_mqdec.c deleted file mode 100644 index 6f740a7..0000000 --- a/src/3rdparty/jasper/src/libjasper/jpc/jpc_mqdec.c +++ /dev/null @@ -1,306 +0,0 @@ -/* - * Copyright (c) 1999-2000 Image Power, Inc. and the University of - * British Columbia. - * Copyright (c) 2001-2003 Michael David Adams. - * All rights reserved. - */ - -/* __START_OF_JASPER_LICENSE__ - * - * JasPer License Version 2.0 - * - * Copyright (c) 2001-2006 Michael David Adams - * Copyright (c) 1999-2000 Image Power, Inc. - * Copyright (c) 1999-2000 The University of British Columbia - * - * All rights reserved. - * - * Permission is hereby granted, free of charge, to any person (the - * "User") obtaining a copy of this software and associated documentation - * files (the "Software"), to deal in the Software without restriction, - * including without limitation the rights to use, copy, modify, merge, - * publish, distribute, and/or sell copies of the Software, and to permit - * persons to whom the Software is furnished to do so, subject to the - * following conditions: - * - * 1. The above copyright notices and this permission notice (which - * includes the disclaimer below) shall be included in all copies or - * substantial portions of the Software. - * - * 2. The name of a copyright holder shall not be used to endorse or - * promote products derived from the Software without specific prior - * written permission. - * - * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS - * LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER - * THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS - * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING - * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A - * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO - * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL - * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING - * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, - * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION - * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE - * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE - * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY. - * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS - * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL - * PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS - * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE - * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE - * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL - * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES, - * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL - * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH - * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH, - * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH - * RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY - * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES. - * - * __END_OF_JASPER_LICENSE__ - */ - -/* - * MQ Arithmetic Decoder - * - * $Id$ - */ - -/******************************************************************************\ -* Includes. -\******************************************************************************/ - -#include <assert.h> -#include <stdlib.h> -#include <stdarg.h> - -#include "jasper/jas_types.h" -#include "jasper/jas_malloc.h" -#include "jasper/jas_math.h" -#include "jasper/jas_debug.h" - -#include "jpc_mqdec.h" - -/******************************************************************************\ -* Local macros. -\******************************************************************************/ - -#if defined(DEBUG) -#define MQDEC_CALL(n, x) \ - ((jas_getdbglevel() >= (n)) ? ((void)(x)) : ((void)0)) -#else -#define MQDEC_CALL(n, x) -#endif - -/******************************************************************************\ -* Local function prototypes. -\******************************************************************************/ - -static void jpc_mqdec_bytein(jpc_mqdec_t *mqdec); - -/******************************************************************************\ -* Code for creation and destruction of a MQ decoder. -\******************************************************************************/ - -/* Create a MQ decoder. */ -jpc_mqdec_t *jpc_mqdec_create(int maxctxs, jas_stream_t *in) -{ - jpc_mqdec_t *mqdec; - - /* There must be at least one context. */ - assert(maxctxs > 0); - - /* Allocate memory for the MQ decoder. */ - if (!(mqdec = jas_malloc(sizeof(jpc_mqdec_t)))) { - goto error; - } - mqdec->in = in; - mqdec->maxctxs = maxctxs; - /* Allocate memory for the per-context state information. */ - if (!(mqdec->ctxs = jas_malloc(mqdec->maxctxs * sizeof(jpc_mqstate_t *)))) { - goto error; - } - /* Set the current context to the first context. */ - mqdec->curctx = mqdec->ctxs; - - /* If an input stream has been associated with the MQ decoder, - initialize the decoder state from the stream. */ - if (mqdec->in) { - jpc_mqdec_init(mqdec); - } - /* Initialize the per-context state information. */ - jpc_mqdec_setctxs(mqdec, 0, 0); - - return mqdec; - -error: - /* Oops... Something has gone wrong. */ - if (mqdec) { - jpc_mqdec_destroy(mqdec); - } - return 0; -} - -/* Destroy a MQ decoder. */ -void jpc_mqdec_destroy(jpc_mqdec_t *mqdec) -{ - if (mqdec->ctxs) { - jas_free(mqdec->ctxs); - } - jas_free(mqdec); -} - -/******************************************************************************\ -* Code for initialization of a MQ decoder. -\******************************************************************************/ - -/* Initialize the state of a MQ decoder. */ - -void jpc_mqdec_init(jpc_mqdec_t *mqdec) -{ - int c; - - mqdec->eof = 0; - mqdec->creg = 0; - /* Get the next byte from the input stream. */ - if ((c = jas_stream_getc(mqdec->in)) == EOF) { - /* We have encountered an I/O error or EOF. */ - c = 0xff; - mqdec->eof = 1; - } - mqdec->inbuffer = c; - mqdec->creg += mqdec->inbuffer << 16; - jpc_mqdec_bytein(mqdec); - mqdec->creg <<= 7; - mqdec->ctreg -= 7; - mqdec->areg = 0x8000; -} - -/* Set the input stream for a MQ decoder. */ - -void jpc_mqdec_setinput(jpc_mqdec_t *mqdec, jas_stream_t *in) -{ - mqdec->in = in; -} - -/* Initialize one or more contexts. */ - -void jpc_mqdec_setctxs(jpc_mqdec_t *mqdec, int numctxs, jpc_mqctx_t *ctxs) -{ - jpc_mqstate_t **ctx; - int n; - - ctx = mqdec->ctxs; - n = JAS_MIN(mqdec->maxctxs, numctxs); - while (--n >= 0) { - *ctx = &jpc_mqstates[2 * ctxs->ind + ctxs->mps]; - ++ctx; - ++ctxs; - } - n = mqdec->maxctxs - numctxs; - while (--n >= 0) { - *ctx = &jpc_mqstates[0]; - ++ctx; - } -} - -/* Initialize a context. */ - -void jpc_mqdec_setctx(jpc_mqdec_t *mqdec, int ctxno, jpc_mqctx_t *ctx) -{ - jpc_mqstate_t **ctxi; - ctxi = &mqdec->ctxs[ctxno]; - *ctxi = &jpc_mqstates[2 * ctx->ind + ctx->mps]; -} - -/******************************************************************************\ -* Code for decoding a bit. -\******************************************************************************/ - -/* Decode a bit. */ - -int jpc_mqdec_getbit_func(register jpc_mqdec_t *mqdec) -{ - int bit; - JAS_DBGLOG(100, ("jpc_mqdec_getbit_func(%p)\n", mqdec)); - MQDEC_CALL(100, jpc_mqdec_dump(mqdec, stderr)); - bit = jpc_mqdec_getbit_macro(mqdec); - MQDEC_CALL(100, jpc_mqdec_dump(mqdec, stderr)); - JAS_DBGLOG(100, ("ctx = %d, decoded %d\n", mqdec->curctx - - mqdec->ctxs, bit)); - return bit; -} - -/* Apply MPS_EXCHANGE algorithm (with RENORMD). */ -int jpc_mqdec_mpsexchrenormd(register jpc_mqdec_t *mqdec) -{ - int ret; - register jpc_mqstate_t *state = *mqdec->curctx; - jpc_mqdec_mpsexchange(mqdec->areg, state->qeval, mqdec->curctx, ret); - jpc_mqdec_renormd(mqdec->areg, mqdec->creg, mqdec->ctreg, mqdec->in, - mqdec->eof, mqdec->inbuffer); - return ret; -} - -/* Apply LPS_EXCHANGE algorithm (with RENORMD). */ -int jpc_mqdec_lpsexchrenormd(register jpc_mqdec_t *mqdec) -{ - int ret; - register jpc_mqstate_t *state = *mqdec->curctx; - jpc_mqdec_lpsexchange(mqdec->areg, state->qeval, mqdec->curctx, ret); - jpc_mqdec_renormd(mqdec->areg, mqdec->creg, mqdec->ctreg, mqdec->in, - mqdec->eof, mqdec->inbuffer); - return ret; -} - -/******************************************************************************\ -* Support code. -\******************************************************************************/ - -/* Apply the BYTEIN algorithm. */ -static void jpc_mqdec_bytein(jpc_mqdec_t *mqdec) -{ - int c; - unsigned char prevbuf; - - if (!mqdec->eof) { - if ((c = jas_stream_getc(mqdec->in)) == EOF) { - mqdec->eof = 1; - c = 0xff; - } - prevbuf = mqdec->inbuffer; - mqdec->inbuffer = c; - if (prevbuf == 0xff) { - if (c > 0x8f) { - mqdec->creg += 0xff00; - mqdec->ctreg = 8; - } else { - mqdec->creg += c << 9; - mqdec->ctreg = 7; - } - } else { - mqdec->creg += c << 8; - mqdec->ctreg = 8; - } - } else { - mqdec->creg += 0xff00; - mqdec->ctreg = 8; - } -} - -/******************************************************************************\ -* Code for debugging. -\******************************************************************************/ - -/* Dump a MQ decoder to a stream for debugging. */ - -void jpc_mqdec_dump(jpc_mqdec_t *mqdec, FILE *out) -{ - fprintf(out, "MQDEC A = %08lx, C = %08lx, CT=%08lx, ", - (unsigned long) mqdec->areg, (unsigned long) mqdec->creg, - (unsigned long) mqdec->ctreg); - fprintf(out, "CTX = %d, ", mqdec->curctx - mqdec->ctxs); - fprintf(out, "IND %d, MPS %d, QEVAL %x\n", *mqdec->curctx - - jpc_mqstates, (*mqdec->curctx)->mps, (*mqdec->curctx)->qeval); -} |