diff options
Diffstat (limited to 'src/3rdparty/jasper/src/libjasper/jpc/jpc_mqenc.c')
| -rw-r--r-- | src/3rdparty/jasper/src/libjasper/jpc/jpc_mqenc.c | 392 |
1 files changed, 0 insertions, 392 deletions
diff --git a/src/3rdparty/jasper/src/libjasper/jpc/jpc_mqenc.c b/src/3rdparty/jasper/src/libjasper/jpc/jpc_mqenc.c deleted file mode 100644 index 89d2df9..0000000 --- a/src/3rdparty/jasper/src/libjasper/jpc/jpc_mqenc.c +++ /dev/null @@ -1,392 +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 Encoder - * - * $Id$ - */ - -/******************************************************************************\ -* Includes. -\******************************************************************************/ - -#include <assert.h> -#include <stdlib.h> - -#include "jasper/jas_stream.h" -#include "jasper/jas_malloc.h" -#include "jasper/jas_math.h" -#include "jasper/jas_debug.h" - -#include "jpc_mqenc.h" - -/******************************************************************************\ -* Macros -\******************************************************************************/ - -#if defined(DEBUG) -#define JPC_MQENC_CALL(n, x) \ - ((jas_getdbglevel() >= (n)) ? ((void)(x)) : ((void)0)) -#else -#define JPC_MQENC_CALL(n, x) -#endif - -#define jpc_mqenc_codemps9(areg, creg, ctreg, curctx, enc) \ -{ \ - jpc_mqstate_t *state = *(curctx); \ - (areg) -= state->qeval; \ - if (!((areg) & 0x8000)) { \ - if ((areg) < state->qeval) { \ - (areg) = state->qeval; \ - } else { \ - (creg) += state->qeval; \ - } \ - *(curctx) = state->nmps; \ - jpc_mqenc_renorme((areg), (creg), (ctreg), (enc)); \ - } else { \ - (creg) += state->qeval; \ - } \ -} - -#define jpc_mqenc_codelps2(areg, creg, ctreg, curctx, enc) \ -{ \ - jpc_mqstate_t *state = *(curctx); \ - (areg) -= state->qeval; \ - if ((areg) < state->qeval) { \ - (creg) += state->qeval; \ - } else { \ - (areg) = state->qeval; \ - } \ - *(curctx) = state->nlps; \ - jpc_mqenc_renorme((areg), (creg), (ctreg), (enc)); \ -} - -#define jpc_mqenc_renorme(areg, creg, ctreg, enc) \ -{ \ - do { \ - (areg) <<= 1; \ - (creg) <<= 1; \ - if (!--(ctreg)) { \ - jpc_mqenc_byteout((areg), (creg), (ctreg), (enc)); \ - } \ - } while (!((areg) & 0x8000)); \ -} - -#define jpc_mqenc_byteout(areg, creg, ctreg, enc) \ -{ \ - if ((enc)->outbuf != 0xff) { \ - if ((creg) & 0x8000000) { \ - if (++((enc)->outbuf) == 0xff) { \ - (creg) &= 0x7ffffff; \ - jpc_mqenc_byteout2(enc); \ - enc->outbuf = ((creg) >> 20) & 0xff; \ - (creg) &= 0xfffff; \ - (ctreg) = 7; \ - } else { \ - jpc_mqenc_byteout2(enc); \ - enc->outbuf = ((creg) >> 19) & 0xff; \ - (creg) &= 0x7ffff; \ - (ctreg) = 8; \ - } \ - } else { \ - jpc_mqenc_byteout2(enc); \ - (enc)->outbuf = ((creg) >> 19) & 0xff; \ - (creg) &= 0x7ffff; \ - (ctreg) = 8; \ - } \ - } else { \ - jpc_mqenc_byteout2(enc); \ - (enc)->outbuf = ((creg) >> 20) & 0xff; \ - (creg) &= 0xfffff; \ - (ctreg) = 7; \ - } \ -} - -#define jpc_mqenc_byteout2(enc) \ -{ \ - if (enc->outbuf >= 0) { \ - if (jas_stream_putc(enc->out, (unsigned char)enc->outbuf) == EOF) { \ - enc->err |= 1; \ - } \ - } \ - enc->lastbyte = enc->outbuf; \ -} - -/******************************************************************************\ -* Local function protoypes. -\******************************************************************************/ - -static void jpc_mqenc_setbits(jpc_mqenc_t *mqenc); - -/******************************************************************************\ -* Code for creation and destruction of encoder. -\******************************************************************************/ - -/* Create a MQ encoder. */ - -jpc_mqenc_t *jpc_mqenc_create(int maxctxs, jas_stream_t *out) -{ - jpc_mqenc_t *mqenc; - - /* Allocate memory for the MQ encoder. */ - if (!(mqenc = jas_malloc(sizeof(jpc_mqenc_t)))) { - goto error; - } - mqenc->out = out; - mqenc->maxctxs = maxctxs; - - /* Allocate memory for the per-context state information. */ - if (!(mqenc->ctxs = jas_malloc(mqenc->maxctxs * sizeof(jpc_mqstate_t *)))) { - goto error; - } - - /* Set the current context to the first one. */ - mqenc->curctx = mqenc->ctxs; - - jpc_mqenc_init(mqenc); - - /* Initialize the per-context state information to something sane. */ - jpc_mqenc_setctxs(mqenc, 0, 0); - - return mqenc; - -error: - if (mqenc) { - jpc_mqenc_destroy(mqenc); - } - return 0; -} - -/* Destroy a MQ encoder. */ - -void jpc_mqenc_destroy(jpc_mqenc_t *mqenc) -{ - if (mqenc->ctxs) { - jas_free(mqenc->ctxs); - } - jas_free(mqenc); -} - -/******************************************************************************\ -* State initialization code. -\******************************************************************************/ - -/* Initialize the coding state of a MQ encoder. */ - -void jpc_mqenc_init(jpc_mqenc_t *mqenc) -{ - mqenc->areg = 0x8000; - mqenc->outbuf = -1; - mqenc->creg = 0; - mqenc->ctreg = 12; - mqenc->lastbyte = -1; - mqenc->err = 0; -} - -/* Initialize one or more contexts. */ - -void jpc_mqenc_setctxs(jpc_mqenc_t *mqenc, int numctxs, jpc_mqctx_t *ctxs) -{ - jpc_mqstate_t **ctx; - int n; - - ctx = mqenc->ctxs; - n = JAS_MIN(mqenc->maxctxs, numctxs); - while (--n >= 0) { - *ctx = &jpc_mqstates[2 * ctxs->ind + ctxs->mps]; - ++ctx; - ++ctxs; - } - n = mqenc->maxctxs - numctxs; - while (--n >= 0) { - *ctx = &jpc_mqstates[0]; - ++ctx; - } - -} - -/* Get the coding state for a MQ encoder. */ - -void jpc_mqenc_getstate(jpc_mqenc_t *mqenc, jpc_mqencstate_t *state) -{ - state->areg = mqenc->areg; - state->creg = mqenc->creg; - state->ctreg = mqenc->ctreg; - state->lastbyte = mqenc->lastbyte; -} - -/******************************************************************************\ -* Code for coding symbols. -\******************************************************************************/ - -/* Encode a bit. */ - -int jpc_mqenc_putbit_func(jpc_mqenc_t *mqenc, int bit) -{ - const jpc_mqstate_t *state; - JAS_DBGLOG(100, ("jpc_mqenc_putbit(%p, %d)\n", mqenc, bit)); - JPC_MQENC_CALL(100, jpc_mqenc_dump(mqenc, stderr)); - - state = *(mqenc->curctx); - - if (state->mps == bit) { - /* Apply the CODEMPS algorithm as defined in the standard. */ - mqenc->areg -= state->qeval; - if (!(mqenc->areg & 0x8000)) { - jpc_mqenc_codemps2(mqenc); - } else { - mqenc->creg += state->qeval; - } - } else { - /* Apply the CODELPS algorithm as defined in the standard. */ - jpc_mqenc_codelps2(mqenc->areg, mqenc->creg, mqenc->ctreg, mqenc->curctx, mqenc); - } - - return jpc_mqenc_error(mqenc) ? (-1) : 0; -} - -int jpc_mqenc_codemps2(jpc_mqenc_t *mqenc) -{ - /* Note: This function only performs part of the work associated with - the CODEMPS algorithm from the standard. Some of the work is also - performed by the caller. */ - - jpc_mqstate_t *state = *(mqenc->curctx); - if (mqenc->areg < state->qeval) { - mqenc->areg = state->qeval; - } else { - mqenc->creg += state->qeval; - } - *mqenc->curctx = state->nmps; - jpc_mqenc_renorme(mqenc->areg, mqenc->creg, mqenc->ctreg, mqenc); - return jpc_mqenc_error(mqenc) ? (-1) : 0; -} - -int jpc_mqenc_codelps(jpc_mqenc_t *mqenc) -{ - jpc_mqenc_codelps2(mqenc->areg, mqenc->creg, mqenc->ctreg, mqenc->curctx, mqenc); - return jpc_mqenc_error(mqenc) ? (-1) : 0; -} - -/******************************************************************************\ -* Miscellaneous code. -\******************************************************************************/ - -/* Terminate the code word. */ - -int jpc_mqenc_flush(jpc_mqenc_t *mqenc, int termmode) -{ - int_fast16_t k; - - switch (termmode) { - case JPC_MQENC_PTERM: - k = 11 - mqenc->ctreg + 1; - while (k > 0) { - mqenc->creg <<= mqenc->ctreg; - mqenc->ctreg = 0; - jpc_mqenc_byteout(mqenc->areg, mqenc->creg, mqenc->ctreg, - mqenc); - k -= mqenc->ctreg; - } - if (mqenc->outbuf != 0xff) { - jpc_mqenc_byteout(mqenc->areg, mqenc->creg, mqenc->ctreg, mqenc); - } - break; - case JPC_MQENC_DEFTERM: - jpc_mqenc_setbits(mqenc); - mqenc->creg <<= mqenc->ctreg; - jpc_mqenc_byteout(mqenc->areg, mqenc->creg, mqenc->ctreg, mqenc); - mqenc->creg <<= mqenc->ctreg; - jpc_mqenc_byteout(mqenc->areg, mqenc->creg, mqenc->ctreg, mqenc); - if (mqenc->outbuf != 0xff) { - jpc_mqenc_byteout(mqenc->areg, mqenc->creg, mqenc->ctreg, mqenc); - } - break; - default: - abort(); - break; - } - return 0; -} - -static void jpc_mqenc_setbits(jpc_mqenc_t *mqenc) -{ - uint_fast32_t tmp = mqenc->creg + mqenc->areg; - mqenc->creg |= 0xffff; - if (mqenc->creg >= tmp) { - mqenc->creg -= 0x8000; - } -} - -/* Dump a MQ encoder to a stream for debugging. */ - -int jpc_mqenc_dump(jpc_mqenc_t *mqenc, FILE *out) -{ - fprintf(out, "AREG = %08x, CREG = %08x, CTREG = %d\n", - mqenc->areg, mqenc->creg, mqenc->ctreg); - fprintf(out, "IND = %02d, MPS = %d, QEVAL = %04x\n", - *mqenc->curctx - jpc_mqstates, (*mqenc->curctx)->mps, - (*mqenc->curctx)->qeval); - return 0; -} |