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update vor version 0.8

This commit is contained in:
Yannick Verschueren 2004-02-13 09:29:59 +00:00
parent a9cede2d5e
commit 28283c60ea
1 changed files with 55 additions and 43 deletions
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98
libopenjpeg/bio.c
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@ -31,25 +31,28 @@
#include <stdio.h>
#include <setjmp.h>
static unsigned char *bio_start, *bio_end, *bio_bp;
static unsigned int bio_buf;
static int bio_ct;
static unsigned char *bio_start; /* pointer to the start of the buffer */
static unsigned char *bio_end; /* pointer to the end of the buffer */
static unsigned char *bio_bp; /* pointer to the present position in the buffer */
static unsigned int bio_buf; /* temporary place where each byte is read or written */
static int bio_ct; /* coder : number of bits free to write // decoder : number of bits read */
extern jmp_buf j2k_error;
/* <summary> */
/* Number of bytes written. */
/* </summary> */
/*
* Number of bytes written.
*/
int bio_numbytes()
{
return bio_bp - bio_start;
}
/* <summary> */
/* Init encoder. */
/* </summary> */
/* <param name="bp">Output buffer</param> */
/* <param name="len">Output buffer length</param> */
/*
* Init encoder.
*
* bp : Output buffer
* len : Output buffer length
*/
void bio_init_enc(unsigned char *bp, int len)
{
bio_start = bp;
@ -59,11 +62,12 @@ void bio_init_enc(unsigned char *bp, int len)
bio_ct = 8;
}
/* <summary> */
/* Init decoder. */
/* </summary> */
/* <param name="bp">Input buffer</param> */
/* <param name="len">Input buffer length</param> */
/*
* Init decoder.
*
* bp : Input buffer
* len : Input buffer length
*/
void bio_init_dec(unsigned char *bp, int len)
{
bio_start = bp;
@ -73,9 +77,10 @@ void bio_init_dec(unsigned char *bp, int len)
bio_ct = 0;
}
/* <summary> */
/* Write byte. --> function modified to eliminate longjmp !!! */
/* </summary> */
/*
* Write byte. --> function modified to eliminate longjmp !!!
*
*/
int bio_byteout()
{
bio_buf = (bio_buf << 8) & 0xffff;
@ -86,9 +91,10 @@ int bio_byteout()
return 0;
}
/* <summary> */
/* Read byte. --> function modified to eliminate longjmp !! */
/* </summary> */
/*
* Read byte. --> function modified to eliminate longjmp !!
*
*/
int bio_bytein()
{
bio_buf = (bio_buf << 8) & 0xffff;
@ -99,10 +105,11 @@ int bio_bytein()
return 0;
}
/* <summary> */
/* Write bit. */
/* </summary> */
/* <param name="b">Bit to write (0 or 1)</param> */
/*
* Write bit.
*
* b : Bit to write (0 or 1)
*/
void bio_putbit(int b)
{
if (bio_ct == 0) {
@ -112,9 +119,10 @@ void bio_putbit(int b)
bio_buf |= b << bio_ct;
}
/* <summary> */
/* Read bit. */
/* </summary> */
/*
* Read bit.
*
*/
int bio_getbit()
{
if (bio_ct == 0) {
@ -124,11 +132,12 @@ int bio_getbit()
return (bio_buf >> bio_ct) & 1;
}
/* <summary> */
/* Write bits. */
/* </summary> */
/* <param name="v">Value of bits</param> */
/* <param name="n">Number of bits to write</param> */
/*
* Write bits.
*
* v : Value of bits
* n : Number of bits to write
*/
void bio_write(int v, int n)
{
int i;
@ -137,10 +146,11 @@ void bio_write(int v, int n)
}
}
/* <summary> */
/* Read bits. */
/* </summary> */
/* <param name="n">Number of bits to read</param> */
/*
* Read bits.
*
* n : Number of bits to read
*/
int bio_read(int n)
{
int i, v;
@ -151,9 +161,10 @@ int bio_read(int n)
return v;
}
/* <summary> */
/* Flush bits. MOdified to eliminate longjmp !! */
/* </summary> */
/*
* Flush bits. Modified to eliminate longjmp !!
*
*/
int bio_flush()
{
bio_ct = 0;
@ -168,8 +179,9 @@ int bio_flush()
return 0;
}
/* <summary> */
/* </summary> */
/*
* Passes the ending bits (coming from flushing)
*/
int bio_inalign()
{
bio_ct = 0;