diff options
Diffstat (limited to 'src/lib/openmj2/bio.c')
| -rw-r--r-- | src/lib/openmj2/bio.c | 187 |
1 files changed, 100 insertions, 87 deletions
diff --git a/src/lib/openmj2/bio.c b/src/lib/openmj2/bio.c index a4f983d3..6d5c2252 100644 --- a/src/lib/openmj2/bio.c +++ b/src/lib/openmj2/bio.c @@ -1,6 +1,6 @@ /* - * 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 + * 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. * @@ -8,7 +8,7 @@ * 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) 2003-2007, Francois-Olivier Devaux * Copyright (c) 2003-2014, Antonin Descampe * Copyright (c) 2005, Herve Drolon, FreeImage Team * All rights reserved. @@ -72,122 +72,135 @@ static int bio_bytein(opj_bio_t *bio); /*@}*/ -/* +/* ========================================================== local functions ========================================================== */ -static int bio_byteout(opj_bio_t *bio) { - bio->buf = (bio->buf << 8) & 0xffff; - bio->ct = bio->buf == 0xff00 ? 7 : 8; - if (bio->bp >= bio->end) { - return 1; - } - *bio->bp++ = bio->buf >> 8; - return 0; +static int bio_byteout(opj_bio_t *bio) +{ + bio->buf = (bio->buf << 8) & 0xffff; + bio->ct = bio->buf == 0xff00 ? 7 : 8; + if (bio->bp >= bio->end) { + return 1; + } + *bio->bp++ = bio->buf >> 8; + return 0; } -static int bio_bytein(opj_bio_t *bio) { - bio->buf = (bio->buf << 8) & 0xffff; - bio->ct = bio->buf == 0xff00 ? 7 : 8; - if (bio->bp >= bio->end) { - return 1; - } - bio->buf |= *bio->bp++; - return 0; +static int bio_bytein(opj_bio_t *bio) +{ + bio->buf = (bio->buf << 8) & 0xffff; + bio->ct = bio->buf == 0xff00 ? 7 : 8; + if (bio->bp >= bio->end) { + return 1; + } + bio->buf |= *bio->bp++; + return 0; } -static void bio_putbit(opj_bio_t *bio, int b) { - if (bio->ct == 0) { - bio_byteout(bio); - } - bio->ct--; - bio->buf |= b << bio->ct; +static void bio_putbit(opj_bio_t *bio, int b) +{ + if (bio->ct == 0) { + bio_byteout(bio); + } + bio->ct--; + bio->buf |= b << bio->ct; } -static int bio_getbit(opj_bio_t *bio) { - if (bio->ct == 0) { - bio_bytein(bio); - } - bio->ct--; - return (bio->buf >> bio->ct) & 1; +static int bio_getbit(opj_bio_t *bio) +{ + if (bio->ct == 0) { + bio_bytein(bio); + } + bio->ct--; + return (bio->buf >> bio->ct) & 1; } -/* +/* ========================================================== Bit Input/Output interface ========================================================== */ -opj_bio_t* bio_create(void) { - opj_bio_t *bio = (opj_bio_t*)opj_malloc(sizeof(opj_bio_t)); - return bio; +opj_bio_t* bio_create(void) +{ + opj_bio_t *bio = (opj_bio_t*)opj_malloc(sizeof(opj_bio_t)); + return bio; } -void bio_destroy(opj_bio_t *bio) { - if(bio) { - opj_free(bio); - } +void bio_destroy(opj_bio_t *bio) +{ + if(bio) { + opj_free(bio); + } } -int bio_numbytes(opj_bio_t *bio) { - return (bio->bp - bio->start); +int bio_numbytes(opj_bio_t *bio) +{ + return (bio->bp - bio->start); } -void bio_init_enc(opj_bio_t *bio, unsigned char *bp, int len) { - bio->start = bp; - bio->end = bp + len; - bio->bp = bp; - bio->buf = 0; - bio->ct = 8; +void bio_init_enc(opj_bio_t *bio, unsigned char *bp, int len) +{ + bio->start = bp; + bio->end = bp + len; + bio->bp = bp; + bio->buf = 0; + bio->ct = 8; } -void bio_init_dec(opj_bio_t *bio, unsigned char *bp, int len) { - bio->start = bp; - bio->end = bp + len; - bio->bp = bp; - bio->buf = 0; - bio->ct = 0; +void bio_init_dec(opj_bio_t *bio, unsigned char *bp, int len) +{ + bio->start = bp; + bio->end = bp + len; + bio->bp = bp; + bio->buf = 0; + bio->ct = 0; } -void bio_write(opj_bio_t *bio, int v, int n) { - int i; - for (i = n - 1; i >= 0; i--) { - bio_putbit(bio, (v >> i) & 1); - } +void bio_write(opj_bio_t *bio, int v, int n) +{ + int i; + for (i = n - 1; i >= 0; i--) { + bio_putbit(bio, (v >> i) & 1); + } } -int bio_read(opj_bio_t *bio, int n) { - int i, v; - v = 0; - for (i = n - 1; i >= 0; i--) { - v += bio_getbit(bio) << i; - } - return v; +int bio_read(opj_bio_t *bio, int n) +{ + int i, v; + v = 0; + for (i = n - 1; i >= 0; i--) { + v += bio_getbit(bio) << i; + } + return v; } -int bio_flush(opj_bio_t *bio) { - bio->ct = 0; - if (bio_byteout(bio)) { - return 1; - } - if (bio->ct == 7) { - bio->ct = 0; - if (bio_byteout(bio)) { - return 1; - } - } - return 0; +int bio_flush(opj_bio_t *bio) +{ + bio->ct = 0; + if (bio_byteout(bio)) { + return 1; + } + if (bio->ct == 7) { + bio->ct = 0; + if (bio_byteout(bio)) { + return 1; + } + } + return 0; } -int bio_inalign(opj_bio_t *bio) { - bio->ct = 0; - if ((bio->buf & 0xff) == 0xff) { - if (bio_bytein(bio)) { - return 1; - } - bio->ct = 0; - } - return 0; +int bio_inalign(opj_bio_t *bio) +{ + bio->ct = 0; + if ((bio->buf & 0xff) == 0xff) { + if (bio_bytein(bio)) { + return 1; + } + bio->ct = 0; + } + return 0; } |