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/*
* Copyright (C) 1998 NCSA
* All rights reserved.
*
* Programmer: Robb Matzke <matzke@llnl.gov>
* Wednesday, April 15, 1998
*
* Purpose: Data compression message.
*/
#include <H5private.h>
#include <H5Eprivate.h>
#include <H5MMprivate.h>
#include <H5Oprivate.h>
#define PABLO_MASK H5O_comp_mask
/* PRIVATE PROTOTYPES */
static herr_t H5O_comp_encode (H5F_t *f, uint8 *p, const void *mesg);
static void *H5O_comp_decode (H5F_t *f, const uint8 *p, H5O_shared_t *sh);
static void *H5O_comp_copy (const void *_mesg, void *_dest);
static size_t H5O_comp_size (H5F_t *f, const void *_mesg);
static herr_t H5O_comp_reset (void *_mesg);
static herr_t H5O_comp_debug (H5F_t *f, const void *_mesg,
FILE * stream, intn indent, intn fwidth);
/* This message derives from H5O */
const H5O_class_t H5O_COMPRESS[1] = {{
H5O_COMPRESS_ID, /* message id number */
"compression", /* message name for debugging */
sizeof(H5O_compress_t), /* native message size */
H5O_comp_decode, /* decode message */
H5O_comp_encode, /* encode message */
H5O_comp_copy, /* copy the native value */
H5O_comp_size, /* size of raw message */
H5O_comp_reset, /* reset method */
NULL, /* get share method */
NULL, /* set share method */
H5O_comp_debug, /* debug the message */
}};
/* Interface initialization */
static hbool_t interface_initialize_g = FALSE;
#define INTERFACE_INIT NULL
/*-------------------------------------------------------------------------
* Function: H5O_comp_decode
*
* Purpose: Decodes a compression message.
*
* Return: Success: Ptr to the native message.
*
* Failure: NULL
*
* Programmer: Robb Matzke
* Wednesday, April 15, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static void *
H5O_comp_decode(H5F_t __unused__ *f, const uint8 *p,
H5O_shared_t __unused__ *sh)
{
H5O_compress_t *comp = NULL;
FUNC_ENTER(H5O_comp_decode, NULL);
/* check args */
assert(p);
/* Decode */
comp = H5MM_xcalloc(1, sizeof *comp);
comp->method = *p++;
comp->flags = *p++;
UINT16DECODE (p, comp->cd_size);
if (comp->cd_size>0) {
comp->client_data = H5MM_xmalloc (comp->cd_size);
HDmemcpy (comp->client_data, p, comp->cd_size);
}
FUNC_LEAVE(comp);
}
/*-------------------------------------------------------------------------
* Function: H5O_comp_encode
*
* Purpose: Encodes message MESG into buffer P.
*
* Return: Success: SUCCEED
*
* Failure: FAIL
*
* Programmer: Robb Matzke
* Wednesday, April 15, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static herr_t
H5O_comp_encode (H5F_t __unused__ *f, uint8 *p/*out*/, const void *mesg)
{
const H5O_compress_t *comp = (const H5O_compress_t*)mesg;
FUNC_ENTER (H5O_comp_encode, FAIL);
/* Check args */
assert (p);
assert (mesg);
*p++ = comp->method;
*p++ = comp->flags;
UINT16ENCODE (p, comp->cd_size);
if (comp->cd_size) {
HDmemcpy (p, comp->client_data, comp->cd_size);
}
FUNC_LEAVE (SUCCEED);
}
/*-------------------------------------------------------------------------
* Function: H5O_comp_copy
*
* Purpose: Copies a compression message from SRC to DST allocating DST
* if necessary. If DST is already allocated then we assume
* that it isn't initialized.
*
* Return: Success: Ptr to DST or allocated result.
*
* Failure: NULL
*
* Programmer: Robb Matzke
* Wednesday, April 15, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static void *
H5O_comp_copy (const void *_src, void *_dst/*out*/)
{
const H5O_compress_t *src = (const H5O_compress_t *)_src;
H5O_compress_t *dst = (H5O_compress_t *)_dst;
FUNC_ENTER (H5O_comp_copy, NULL);
if (!dst) dst = H5MM_xmalloc (sizeof *dst);
*dst = *src;
if (src->cd_size>0) {
dst->client_data = H5MM_xmalloc (src->cd_size);
HDmemcpy (dst->client_data, src->client_data, src->cd_size);
}
FUNC_LEAVE (dst);
}
/*-------------------------------------------------------------------------
* Function: H5O_comp_size
*
* Purpose: Determines the size of a raw compression message.
*
* Return: Success: Size of message.
*
* Failure: zero
*
* Programmer: Robb Matzke
* Wednesday, April 15, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static size_t
H5O_comp_size (H5F_t __unused__ *f, const void *mesg)
{
const H5O_compress_t *comp = (const H5O_compress_t*)mesg;
FUNC_ENTER (H5O_comp_size, 0);
FUNC_LEAVE (4+comp->cd_size);
}
/*-------------------------------------------------------------------------
* Function: H5O_comp_reset
*
* Purpose: Resets a compression message by freeing the client data and
* setting all fields to zero. The MESG buffer is not freed.
*
* Return: Success: SUCCEED
*
* Failure: FAIL
*
* Programmer: Robb Matzke
* Wednesday, April 15, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static herr_t
H5O_comp_reset (void *mesg)
{
H5O_compress_t *comp = (H5O_compress_t*)mesg;
FUNC_ENTER (H5O_comp_reset, FAIL);
assert (comp);
H5MM_xfree (comp->client_data);
HDmemset (comp, 0, sizeof *comp);
FUNC_LEAVE (SUCCEED);
}
/*-------------------------------------------------------------------------
* Function: H5O_comp_debug
*
* Purpose: Prints debugging information for compression message MESG on
* output stream STREAM. Each line is indented INDENT
* characters and the field name takes up FWIDTH characters.
*
* Return: Success: SUCCEED
*
* Failure: FAIL
*
* Programmer: Robb Matzke
* Wednesday, April 15, 1998
*
* Modifications:
*
*-------------------------------------------------------------------------
*/
static herr_t
H5O_comp_debug (H5F_t __unused__ *f, const void *mesg, FILE *stream,
intn indent, intn fwidth)
{
const H5O_compress_t *comp = (const H5O_compress_t *)mesg;
size_t i, j;
FUNC_ENTER(H5O_comp_debug, FAIL);
/* check args */
assert(f);
assert(comp);
assert(stream);
assert(indent >= 0);
assert(fwidth >= 0);
fprintf (stream, "%*s%-*s %d\n", indent, "", fwidth,
"Method:",
(int)(comp->method));
fprintf (stream, "%*s%-*s 0x%02x\n", indent, "", fwidth,
"Flags:",
(unsigned)(comp->flags));
fprintf (stream, "%*s%-*s %lu\n", indent, "", fwidth,
"Size of client data:",
(unsigned long)(comp->cd_size));
if (comp->cd_size>0) {
fprintf (stream, "%*s%s\n", indent, "", "Client Data:");
for (i=0; i<comp->cd_size; i+=16) {
fprintf (stream, "%*s%04d: ", indent+3, "", i);
for (j=0; j<16; j++) {
if (8==j) putc (' ', stream);
if (i+j<comp->cd_size) {
fprintf (stream, "%02x ", comp->client_data[i+j]);
} else {
fputs (" ", stream);
}
}
for (j=0; j<16 && i+j<comp->cd_size; j++) {
if (8==j) putc (' ', stream);
if (comp->client_data[i+j]>' ' &&
comp->client_data[i+j]<='~') {
putc (comp->client_data[i+j], stream);
} else {
putc ('.', stream);
}
putc ('\n', stream);
}
}
} else {
fprintf (stream, "%*s%-*s None\n", indent, "", fwidth, "Client Data:");
}
FUNC_LEAVE(SUCCEED);
}
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