diff options
Diffstat (limited to 'converter/other/jpeg2000/libjasper/jpc/jpc_mqdec.c')
| -rw-r--r-- | converter/other/jpeg2000/libjasper/jpc/jpc_mqdec.c | 266 |
1 files changed, 133 insertions, 133 deletions
diff --git a/converter/other/jpeg2000/libjasper/jpc/jpc_mqdec.c b/converter/other/jpeg2000/libjasper/jpc/jpc_mqdec.c index f58a1c7d..2d419522 100644 --- a/converter/other/jpeg2000/libjasper/jpc/jpc_mqdec.c +++ b/converter/other/jpeg2000/libjasper/jpc/jpc_mqdec.c @@ -6,14 +6,14 @@ */ /* __START_OF_JASPER_LICENSE__ - * + * * JasPer Software License - * + * * IMAGE POWER JPEG-2000 PUBLIC LICENSE * ************************************ - * + * * GRANT: - * + * * Permission is hereby granted, free of charge, to any person (the "User") * obtaining a copy of this software and associated documentation, to deal * in the JasPer Software without restriction, including without limitation @@ -21,22 +21,22 @@ * and/or sell copies of the JasPer Software (in source and binary forms), * and to permit persons to whom the JasPer Software is furnished to do so, * provided further that the License Conditions below are met. - * + * * License Conditions * ****************** - * + * * A. Redistributions of source code must retain the above copyright notice, * and this list of conditions, and the following disclaimer. - * + * * B. Redistributions in binary form must reproduce the above copyright * notice, and this list of conditions, and the following disclaimer in * the documentation and/or other materials provided with the distribution. - * + * * C. Neither the name of Image Power, Inc. nor any other contributor * (including, but not limited to, the University of British Columbia and * Michael David Adams) may be used to endorse or promote products derived * from this software without specific prior written permission. - * + * * D. User agrees that it shall not commence any action against Image Power, * Inc., the University of British Columbia, Michael David Adams, or any * other contributors (collectively "Licensors") for infringement of any @@ -56,17 +56,17 @@ * trade dress, or service mark rights); and (v) divisions, continuations, * renewals, reissues and extensions of the foregoing (as and to the extent * applicable) now existing, hereafter filed, issued or acquired. - * + * * E. If User commences an infringement action against any Licensor(s) then * such Licensor(s) shall have the right to terminate User's license and * all sublicenses that have been granted hereunder by User to other parties. - * + * * F. This software is for use only in hardware or software products that * are compliant with ISO/IEC 15444-1 (i.e., JPEG-2000 Part 1). No license * or right to this Software is granted for products that do not comply * with ISO/IEC 15444-1. The JPEG-2000 Part 1 standard can be purchased * from the ISO. - * + * * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE. * NO USE OF THE JASPER SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER * THIS DISCLAIMER. THE JASPER SOFTWARE IS PROVIDED BY THE LICENSORS AND @@ -106,7 +106,7 @@ * TECHNOLOGY OR PRODUCTS FOR HIGH RISK ACTIVITIES AND WILL ENSURE THAT ITS * CUSTOMERS AND END-USERS OF ITS PRODUCTS ARE PROVIDED WITH A COPY OF THE * NOTICE SPECIFIED IN THIS SECTION. - * + * * __END_OF_JASPER_LICENSE__ */ @@ -136,10 +136,10 @@ \******************************************************************************/ #if defined(DEBUG) -#define MQDEC_CALL(n, x) \ - ((jas_getdbglevel() >= (n)) ? ((void)(x)) : ((void)0)) +#define MQDEC_CALL(n, x) \ + ((jas_getdbglevel() >= (n)) ? ((void)(x)) : ((void)0)) #else -#define MQDEC_CALL(n, x) +#define MQDEC_CALL(n, x) #endif /******************************************************************************\ @@ -155,49 +155,49 @@ static void jpc_mqdec_bytein(jpc_mqdec_t *mqdec); /* 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; + 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; + /* 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); + if (mqdec->ctxs) { + jas_free(mqdec->ctxs); + } + jas_free(mqdec); } /******************************************************************************\ @@ -208,59 +208,59 @@ void jpc_mqdec_destroy(jpc_mqdec_t *mqdec) 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; + 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; + 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; - } + 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]; + jpc_mqstate_t **ctxi; + ctxi = &mqdec->ctxs[ctxno]; + *ctxi = &jpc_mqstates[2 * ctx->ind + ctx->mps]; } /******************************************************************************\ @@ -271,36 +271,36 @@ void jpc_mqdec_setctx(jpc_mqdec_t *mqdec, int ctxno, jpc_mqctx_t *ctx) 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; + 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; + 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; + 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; } /******************************************************************************\ @@ -310,30 +310,30 @@ int jpc_mqdec_lpsexchrenormd(register jpc_mqdec_t *mqdec) /* 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; - } + 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; + } } |