kopia lustrzana https://gitlab.com/sane-project/backends
671 wiersze
17 KiB
C
671 wiersze
17 KiB
C
/* sane - Scanner Access Now Easy.
|
|
Copyright (C) 1997 David Mosberger-Tang
|
|
This file is part of the SANE package.
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston,
|
|
MA 02111-1307, USA.
|
|
|
|
As a special exception, the authors of SANE give permission for
|
|
additional uses of the libraries contained in this release of SANE.
|
|
|
|
The exception is that, if you link a SANE library with other files
|
|
to produce an executable, this does not by itself cause the
|
|
resulting executable to be covered by the GNU General Public
|
|
License. Your use of that executable is in no way restricted on
|
|
account of linking the SANE library code into it.
|
|
|
|
This exception does not, however, invalidate any other reasons why
|
|
the executable file might be covered by the GNU General Public
|
|
License.
|
|
|
|
If you submit changes to SANE to the maintainers to be included in
|
|
a subsequent release, you agree by submitting the changes that
|
|
those changes may be distributed with this exception intact.
|
|
|
|
If you write modifications of your own for SANE, it is your choice
|
|
whether to permit this exception to apply to your modifications.
|
|
If you do not wish that, delete this exception notice. */
|
|
|
|
#include "../include/sane/config.h"
|
|
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include "../include/sane/sane.h"
|
|
#include "../include/sane/sanei_wire.h"
|
|
|
|
#define BACKEND_NAME sanei_wire
|
|
#include "../include/sane/sanei_backend.h"
|
|
|
|
void
|
|
sanei_w_space (Wire * w, size_t howmuch)
|
|
{
|
|
size_t nbytes, left_over;
|
|
int fd = w->io.fd;
|
|
ssize_t nread, nwritten;
|
|
|
|
DBG (3, "sanei_w_space: %lu bytes for wire %d\n", (u_long) howmuch, fd);
|
|
|
|
if (howmuch > w->buffer.size)
|
|
DBG (2, "sanei_w_space: bigger than buffer (%lu bytes), "
|
|
"may be flush()\n", (u_long) w->buffer.size);
|
|
|
|
if (w->status != 0)
|
|
{
|
|
DBG (1, "sanei_w_space: wire is in invalid state %d\n",
|
|
w->status);
|
|
return;
|
|
}
|
|
|
|
if (w->buffer.curr + howmuch > w->buffer.end)
|
|
{
|
|
DBG (4, "sanei_w_space: free buffer size is %d\n",
|
|
w->buffer.end - w->buffer.curr);
|
|
switch (w->direction)
|
|
{
|
|
case WIRE_ENCODE:
|
|
nbytes = w->buffer.curr - w->buffer.start;
|
|
w->buffer.curr = w->buffer.start;
|
|
DBG (4, "sanei_w_space: ENCODE: sending %lu bytes\n",
|
|
(u_long) nbytes);
|
|
while (nbytes > 0)
|
|
{
|
|
nwritten = (*w->io.write) (fd, w->buffer.curr, nbytes);
|
|
if (nwritten < 0)
|
|
{
|
|
DBG (1, "sanei_w_space: ENCODE: write failed (%d)\n", errno);
|
|
w->status = errno;
|
|
return;
|
|
}
|
|
w->buffer.curr += nwritten;
|
|
nbytes -= nwritten;
|
|
}
|
|
w->buffer.curr = w->buffer.start;
|
|
w->buffer.end = w->buffer.start + w->buffer.size;
|
|
DBG (4, "sanei_w_space: ENCODE: free buffer is now %d\n",
|
|
w->buffer.size);
|
|
break;
|
|
|
|
case WIRE_DECODE:
|
|
left_over = w->buffer.end - w->buffer.curr;
|
|
|
|
if ((signed) left_over < 0)
|
|
{
|
|
DBG (1, "sanei_w_space: DECODE: buffer underflow\n");
|
|
return;
|
|
}
|
|
|
|
if (left_over)
|
|
{
|
|
DBG (4, "sanei_w_space: DECODE: %lu bytes left in buffer\n",
|
|
(u_long) left_over);
|
|
memmove (w->buffer.start, w->buffer.curr, left_over);
|
|
}
|
|
w->buffer.curr = w->buffer.start;
|
|
w->buffer.end = w->buffer.start + left_over;
|
|
|
|
DBG (4, "sanei_w_space: DECODE: receiving data\n");
|
|
do
|
|
{
|
|
nread = (*w->io.read) (fd, w->buffer.end,
|
|
w->buffer.size - left_over);
|
|
if (nread <= 0)
|
|
{
|
|
DBG (2, "sanei_w_space: DECODE: no data received (%d)\n",
|
|
errno);
|
|
if (nread == 0)
|
|
errno = EINVAL;
|
|
w->status = errno;
|
|
return;
|
|
}
|
|
left_over += nread;
|
|
w->buffer.end += nread;
|
|
}
|
|
while (left_over < howmuch);
|
|
DBG (4, "sanei_w_space: DECODE: %d bytes read\n",
|
|
w->buffer.end - w->buffer.start);
|
|
break;
|
|
|
|
case WIRE_FREE:
|
|
DBG (4, "sanei_w_space: FREE: doing nothing for free operation\n");
|
|
break;
|
|
}
|
|
}
|
|
DBG (4, "sanei_w_space: done\n");
|
|
}
|
|
|
|
void
|
|
sanei_w_void (Wire * w)
|
|
{
|
|
DBG (3, "sanei_w_void: wire %d (void debug output)\n", w->io.fd);
|
|
}
|
|
|
|
void
|
|
sanei_w_array (Wire * w, SANE_Word * len_ptr, void **v,
|
|
WireCodecFunc w_element, size_t element_size)
|
|
{
|
|
SANE_Word len;
|
|
char *val;
|
|
int i;
|
|
|
|
DBG (3, "sanei_w_array: wire %d, elements of size %lu\n", w->io.fd,
|
|
(u_long) element_size);
|
|
|
|
if (w->direction == WIRE_FREE)
|
|
{
|
|
if (*len_ptr && *v)
|
|
{
|
|
DBG (4, "sanei_w_array: FREE: freeing array (%d elements)\n",
|
|
*len_ptr);
|
|
val = *v;
|
|
for (i = 0; i < *len_ptr; ++i)
|
|
{
|
|
(*w_element) (w, val);
|
|
val += element_size;
|
|
}
|
|
free (*v);
|
|
}
|
|
else
|
|
DBG (1, "sanei_w_array: FREE: tried to free array but *len_ptr or *v "
|
|
"was NULL\n");
|
|
|
|
DBG (4, "sanei_w_array: FREE: done\n");
|
|
return;
|
|
}
|
|
|
|
if (w->direction == WIRE_ENCODE)
|
|
len = *len_ptr;
|
|
DBG (4, "sanei_w_array: send/receive array length\n");
|
|
sanei_w_word (w, &len);
|
|
|
|
if (w->status)
|
|
{
|
|
DBG (1, "sanei_w_array: bad status: %d\n", w->status);
|
|
return;
|
|
}
|
|
DBG (4, "sanei_w_array: array has %d elements\n", len);
|
|
|
|
if (w->direction == WIRE_DECODE)
|
|
{
|
|
*len_ptr = len;
|
|
if (len)
|
|
{
|
|
*v = malloc (len * element_size);
|
|
if (*v == 0)
|
|
{
|
|
/* Malloc failed, so return an error. */
|
|
DBG (1, "sanei_w_array: DECODE: not enough free memory\n");
|
|
w->status = ENOMEM;
|
|
return;
|
|
}
|
|
memset (*v, 0, len * element_size);
|
|
}
|
|
else
|
|
*v = 0;
|
|
}
|
|
|
|
val = *v;
|
|
DBG (4, "sanei_w_array: transferring array elements\n");
|
|
for (i = 0; i < len; ++i)
|
|
{
|
|
(*w_element) (w, val);
|
|
val += element_size;
|
|
if (w->status)
|
|
{
|
|
DBG (1, "sanei_w_array: bad status: %d\n", w->status);
|
|
return;
|
|
}
|
|
}
|
|
DBG (4, "sanei_w_array: done\n");
|
|
}
|
|
|
|
void
|
|
sanei_w_ptr (Wire * w, void **v, WireCodecFunc w_value, size_t value_size)
|
|
{
|
|
SANE_Word is_null;
|
|
|
|
DBG (3, "sanei_w_ptr: wire %d, value pointer at is %lu bytes\n", w->io.fd,
|
|
(u_long) value_size);
|
|
|
|
if (w->direction == WIRE_FREE)
|
|
{
|
|
if (*v && value_size)
|
|
{
|
|
DBG (4, "sanei_w_ptr: FREE: freeing value\n");
|
|
(*w_value) (w, *v);
|
|
free (*v);
|
|
}
|
|
else
|
|
DBG (1, "sanei_w_ptr: FREE: tried to free value but *v or value_size "
|
|
"was NULL\n");
|
|
|
|
DBG (4, "sanei_w_ptr: FREE: done\n");
|
|
return;
|
|
}
|
|
if (w->direction == WIRE_ENCODE)
|
|
is_null = (*v == 0);
|
|
|
|
DBG (4, "sanei_w_ptr: send/receive is_null\n");
|
|
sanei_w_word (w, &is_null);
|
|
if (w->status)
|
|
{
|
|
DBG (1, "sanei_w_ptr: bad status: %d\n", w->status);
|
|
return;
|
|
}
|
|
|
|
if (!is_null)
|
|
{
|
|
if (w->direction == WIRE_DECODE)
|
|
{
|
|
DBG (4, "sanei_w_ptr: DECODE: receive data pointed at\n");
|
|
*v = malloc (value_size);
|
|
if (*v == 0)
|
|
{
|
|
/* Malloc failed, so return an error. */
|
|
DBG (1, "sanei_w_ptr: DECODE: not enough free memory\n");
|
|
w->status = ENOMEM;
|
|
return;
|
|
}
|
|
memset (*v, 0, value_size);
|
|
}
|
|
(*w_value) (w, *v);
|
|
}
|
|
else if (w->direction == WIRE_DECODE)
|
|
*v = 0;
|
|
|
|
DBG (4, "sanei_w_ptr: done\n");
|
|
}
|
|
|
|
void
|
|
sanei_w_byte (Wire * w, SANE_Byte * v)
|
|
{
|
|
DBG (3, "sanei_w_byte: wire %d\n", w->io.fd);
|
|
(*w->codec.w_byte) (w, v);
|
|
if (w->direction != WIRE_FREE)
|
|
DBG (4, "sanei_w_byte: value = %d\n", *v);
|
|
}
|
|
|
|
void
|
|
sanei_w_char (Wire * w, SANE_Char * v)
|
|
{
|
|
DBG (3, "sanei_w_char: wire %d\n", w->io.fd);
|
|
(*w->codec.w_char) (w, v);
|
|
if (w->direction != WIRE_FREE)
|
|
DBG (4, "sanei_w_char: value = %d\n", *v);
|
|
}
|
|
|
|
void
|
|
sanei_w_word (Wire * w, SANE_Word * v)
|
|
{
|
|
DBG (3, "sanei_w_word: wire %d\n", w->io.fd);
|
|
(*w->codec.w_word) (w, v);
|
|
if (w->direction != WIRE_FREE)
|
|
DBG (4, "sanei_w_word: value = %d\n", *v);
|
|
}
|
|
|
|
void
|
|
sanei_w_string (Wire * w, SANE_String * v)
|
|
{
|
|
DBG (3, "sanei_w_string: wire %d\n", w->io.fd);
|
|
(*w->codec.w_string) (w, v);
|
|
if (w->direction != WIRE_FREE && w->status == 0)
|
|
DBG (4, "sanei_w_string: value = %s\n", *v);
|
|
}
|
|
|
|
void
|
|
sanei_w_status (Wire * w, SANE_Status * v)
|
|
{
|
|
SANE_Word word = *v;
|
|
|
|
DBG (3, "sanei_w_status: wire %d\n", w->io.fd);
|
|
|
|
sanei_w_word (w, &word);
|
|
if (w->direction == WIRE_DECODE)
|
|
*v = word;
|
|
|
|
if (w->direction != WIRE_FREE)
|
|
DBG (4, "sanei_w_status: value = %d\n", word);
|
|
}
|
|
|
|
void
|
|
sanei_w_bool (Wire * w, SANE_Bool * v)
|
|
{
|
|
SANE_Word word = *v;
|
|
|
|
DBG (3, "sanei_w_bool: wire %d\n", w->io.fd);
|
|
sanei_w_word (w, &word);
|
|
if (w->direction == WIRE_DECODE)
|
|
*v = word;
|
|
|
|
if (w->direction != WIRE_FREE)
|
|
DBG (4, "sanei_w_bool: value = %s\n",
|
|
((word == SANE_TRUE) ? ("true") : ("false")));
|
|
}
|
|
|
|
void
|
|
sanei_w_constraint_type (Wire * w, SANE_Constraint_Type * v)
|
|
{
|
|
SANE_Word word = *v;
|
|
|
|
DBG (3, "sanei_w_constraint_type: wire %d\n", w->io.fd);
|
|
|
|
sanei_w_word (w, &word);
|
|
if (w->direction == WIRE_DECODE)
|
|
*v = word;
|
|
|
|
if (w->direction != WIRE_FREE)
|
|
DBG (4, "sanei_w_constraint_type: value = %d\n", word);
|
|
}
|
|
|
|
void
|
|
sanei_w_value_type (Wire * w, SANE_Value_Type * v)
|
|
{
|
|
SANE_Word word = *v;
|
|
|
|
DBG (3, "sanei_w_value_type: wire %d\n", w->io.fd);
|
|
|
|
sanei_w_word (w, &word);
|
|
if (w->direction == WIRE_DECODE)
|
|
*v = word;
|
|
if (w->direction != WIRE_FREE)
|
|
DBG (4, "sanei_w_value_type: value = %d\n", word);
|
|
}
|
|
|
|
void
|
|
sanei_w_unit (Wire * w, SANE_Unit * v)
|
|
{
|
|
SANE_Word word = *v;
|
|
|
|
DBG (3, "sanei_w_unit: wire %d\n", w->io.fd);
|
|
sanei_w_word (w, &word);
|
|
if (w->direction == WIRE_DECODE)
|
|
*v = word;
|
|
|
|
if (w->direction != WIRE_FREE)
|
|
DBG (4, "sanei_w_unit: value = %d\n", word);
|
|
/* gosh... all the sane_w_something should be a macro or something */
|
|
}
|
|
|
|
void
|
|
sanei_w_action (Wire * w, SANE_Action * v)
|
|
{
|
|
SANE_Word word = *v;
|
|
|
|
DBG (3, "sanei_w_action: wire %d\n", w->io.fd);
|
|
|
|
sanei_w_word (w, &word);
|
|
if (w->direction == WIRE_DECODE)
|
|
*v = word;
|
|
|
|
if (w->direction != WIRE_FREE)
|
|
DBG (4, "sanei_w_action: value = %d\n", word);
|
|
}
|
|
|
|
void
|
|
sanei_w_frame (Wire * w, SANE_Frame * v)
|
|
{
|
|
SANE_Word word = *v;
|
|
|
|
DBG (3, "sanei_w_frame: wire %d\n", w->io.fd);
|
|
|
|
sanei_w_word (w, &word);
|
|
if (w->direction == WIRE_DECODE)
|
|
*v = word;
|
|
|
|
if (w->direction != WIRE_FREE)
|
|
DBG (4, "sanei_w_frame: value = %d\n", word);
|
|
}
|
|
|
|
void
|
|
sanei_w_range (Wire * w, SANE_Range * v)
|
|
{
|
|
DBG (3, "sanei_w_range: wire %d\n", w->io.fd);
|
|
sanei_w_word (w, &v->min);
|
|
sanei_w_word (w, &v->max);
|
|
sanei_w_word (w, &v->quant);
|
|
if (w->direction != WIRE_FREE)
|
|
DBG (4, "sanei_w_range: min/max/step = %f/%f/%f\n",
|
|
SANE_UNFIX (v->min), SANE_UNFIX (v->max), SANE_UNFIX (v->quant));
|
|
}
|
|
|
|
void
|
|
sanei_w_device (Wire * w, SANE_Device * v)
|
|
{
|
|
DBG (3, "sanei_w_device: wire %d\n", w->io.fd);
|
|
sanei_w_string (w, (SANE_String *) & v->name);
|
|
sanei_w_string (w, (SANE_String *) & v->vendor);
|
|
sanei_w_string (w, (SANE_String *) & v->model);
|
|
sanei_w_string (w, (SANE_String *) & v->type);
|
|
if (w->direction != WIRE_FREE)
|
|
DBG (4, "sanei_w_device: %s %s from %s (%s)\n", v->name, v->model,
|
|
v->vendor, v->type);
|
|
}
|
|
|
|
void
|
|
sanei_w_device_ptr (Wire * w, SANE_Device ** v)
|
|
{
|
|
DBG (3, "sanei_w_device_ptr: wire %d\n", w->io.fd);
|
|
sanei_w_ptr (w, (void **) v, (WireCodecFunc) sanei_w_device, sizeof (**v));
|
|
if (w->direction != WIRE_FREE)
|
|
DBG (4, "sanei_w_device_ptr: device struct at %p\n", *v);
|
|
}
|
|
|
|
void
|
|
sanei_w_option_descriptor (Wire * w, SANE_Option_Descriptor * v)
|
|
{
|
|
SANE_Word len;
|
|
|
|
DBG (3, "sanei_w_option_descriptor: wire %d\n", w->io.fd);
|
|
|
|
sanei_w_string (w, (SANE_String *) & v->name);
|
|
sanei_w_string (w, (SANE_String *) & v->title);
|
|
sanei_w_string (w, (SANE_String *) & v->desc);
|
|
sanei_w_value_type (w, &v->type);
|
|
sanei_w_unit (w, &v->unit);
|
|
sanei_w_word (w, &v->size);
|
|
sanei_w_word (w, &v->cap);
|
|
sanei_w_constraint_type (w, &v->constraint_type);
|
|
|
|
if (w->direction != WIRE_FREE)
|
|
DBG (4, "sanei_w_option_descriptor: option %s\n", v->name);
|
|
|
|
switch (v->constraint_type)
|
|
{
|
|
case SANE_CONSTRAINT_NONE:
|
|
break;
|
|
|
|
case SANE_CONSTRAINT_RANGE:
|
|
sanei_w_ptr (w, (void **) &v->constraint.range,
|
|
(WireCodecFunc) sanei_w_range, sizeof (SANE_Range));
|
|
break;
|
|
|
|
case SANE_CONSTRAINT_WORD_LIST:
|
|
if (w->direction != WIRE_DECODE)
|
|
len = v->constraint.word_list[0] + 1;
|
|
sanei_w_array (w, &len, (void **) &v->constraint.word_list,
|
|
w->codec.w_word, sizeof (SANE_Word));
|
|
break;
|
|
|
|
case SANE_CONSTRAINT_STRING_LIST:
|
|
if (w->direction != WIRE_DECODE)
|
|
{
|
|
for (len = 0; v->constraint.string_list[len]; ++len);
|
|
++len; /* send NULL string, too */
|
|
}
|
|
sanei_w_array (w, &len, (void **) &v->constraint.string_list,
|
|
w->codec.w_string, sizeof (SANE_String));
|
|
break;
|
|
}
|
|
DBG (4, "sanei_w_option_descriptor: done\n");
|
|
}
|
|
|
|
void
|
|
sanei_w_option_descriptor_ptr (Wire * w, SANE_Option_Descriptor ** v)
|
|
{
|
|
DBG (3, "sanei_w_option_descriptor_ptr: wire %d\n", w->io.fd);
|
|
sanei_w_ptr (w, (void **) v,
|
|
(WireCodecFunc) sanei_w_option_descriptor, sizeof (**v));
|
|
DBG (4, "sanei_w_option_descriptor_ptr: done\n");
|
|
}
|
|
|
|
void
|
|
sanei_w_parameters (Wire * w, SANE_Parameters * v)
|
|
{
|
|
DBG (3, "sanei_w_parameters: wire %d\n", w->io.fd);
|
|
sanei_w_frame (w, &v->format);
|
|
sanei_w_bool (w, &v->last_frame);
|
|
sanei_w_word (w, &v->bytes_per_line);
|
|
sanei_w_word (w, &v->pixels_per_line);
|
|
sanei_w_word (w, &v->lines);
|
|
sanei_w_word (w, &v->depth);
|
|
if (w->direction != WIRE_FREE)
|
|
DBG (4,
|
|
"sanei_w_parameters: format/last/bpl/ppl/lines/depth = "
|
|
"%d/%d/%d/%d/%d/%d\n", v->format, v->last_frame, v->bytes_per_line,
|
|
v->pixels_per_line, v->lines, v->depth);
|
|
}
|
|
|
|
static void
|
|
flush (Wire * w)
|
|
{
|
|
DBG (3, "flush: wire %d\n", w->io.fd);
|
|
if (w->direction == WIRE_ENCODE)
|
|
sanei_w_space (w, w->buffer.size + 1);
|
|
else if (w->direction == WIRE_DECODE)
|
|
w->buffer.curr = w->buffer.end = w->buffer.start;
|
|
if (w->status != 0)
|
|
DBG (2, "flush: error status %d\n", w->status);
|
|
DBG (4, "flush: wire flushed\n");
|
|
}
|
|
|
|
void
|
|
sanei_w_set_dir (Wire * w, WireDirection dir)
|
|
{
|
|
DBG (3, "sanei_w_set_dir: wire %d, old direction WIRE_%s\n", w->io.fd,
|
|
w->direction == WIRE_ENCODE ? "ENCODE" :
|
|
(w->direction == WIRE_DECODE ? "DECODE" : "FREE"));
|
|
if (w->direction == WIRE_DECODE && w->buffer.curr != w->buffer.end)
|
|
DBG (1, "sanei_w_set_dir: WARNING: will delete %d bytes from buffer\n",
|
|
w->buffer.end - w->buffer.curr);
|
|
flush (w);
|
|
w->direction = dir;
|
|
DBG (4, "sanei_w_set_dir: direction changed\n");
|
|
flush (w);
|
|
DBG (3, "sanei_w_set_dir: wire %d, new direction WIRE_%s\n", w->io.fd,
|
|
dir == WIRE_ENCODE ? "ENCODE" :
|
|
(dir == WIRE_DECODE ? "DECODE" : "FREE"));
|
|
}
|
|
|
|
void
|
|
sanei_w_call (Wire * w,
|
|
SANE_Word procnum,
|
|
WireCodecFunc w_arg, void *arg,
|
|
WireCodecFunc w_reply, void *reply)
|
|
{
|
|
|
|
DBG (3, "sanei_w_call: wire %d (old status %d)\n", w->io.fd, w->status);
|
|
w->status = 0;
|
|
sanei_w_set_dir (w, WIRE_ENCODE);
|
|
|
|
DBG (4, "sanei_w_call: sending request (procedure number: %d)\n", procnum);
|
|
sanei_w_word (w, &procnum);
|
|
(*w_arg) (w, arg);
|
|
|
|
if (w->status == 0)
|
|
{
|
|
DBG (4, "sanei_w_call: receiving reply\n");
|
|
sanei_w_set_dir (w, WIRE_DECODE);
|
|
(*w_reply) (w, reply);
|
|
}
|
|
|
|
if (w->status != 0)
|
|
DBG (2, "sanei_w_call: error status %d\n", w->status);
|
|
DBG (4, "sanei_w_call: done\n");
|
|
}
|
|
|
|
void
|
|
sanei_w_reply (Wire * w, WireCodecFunc w_reply, void *reply)
|
|
{
|
|
DBG (3, "sanei_w_reply: wire %d (old status %d)\n", w->io.fd, w->status);
|
|
w->status = 0;
|
|
sanei_w_set_dir (w, WIRE_ENCODE);
|
|
(*w_reply) (w, reply);
|
|
flush (w);
|
|
if (w->status != 0)
|
|
DBG (2, "sanei_w_reply: error status %d\n", w->status);
|
|
DBG (4, "sanei_w_reply: done\n");
|
|
}
|
|
|
|
void
|
|
sanei_w_free (Wire * w, WireCodecFunc w_reply, void *reply)
|
|
{
|
|
WireDirection saved_dir = w->direction;
|
|
|
|
DBG (3, "sanei_w_free: wire %d\n", w->io.fd);
|
|
|
|
w->direction = WIRE_FREE;
|
|
(*w_reply) (w, reply);
|
|
w->direction = saved_dir;
|
|
|
|
if (w->status != 0)
|
|
DBG (2, "sanei_w_free: error status %d\n", w->status);
|
|
DBG (4, "sanei_w_free: done\n");
|
|
}
|
|
|
|
void
|
|
sanei_w_init (Wire * w, void (*codec_init_func) (Wire *))
|
|
{
|
|
DBG_INIT ();
|
|
|
|
DBG (3, "sanei_w_init: initializing\n");
|
|
w->status = 0;
|
|
w->direction = WIRE_ENCODE;
|
|
w->buffer.size = 8192;
|
|
w->buffer.start = malloc (w->buffer.size);
|
|
|
|
if (w->buffer.start == 0)
|
|
{
|
|
/* Malloc failed, so return an error. */
|
|
w->status = ENOMEM;
|
|
DBG (1, "sanei_w_init: not enough free memory\n");
|
|
}
|
|
|
|
w->buffer.curr = w->buffer.start;
|
|
w->buffer.end = w->buffer.start + w->buffer.size;
|
|
if (codec_init_func != 0)
|
|
{
|
|
DBG (4, "sanei_w_init: initializing codec\n");
|
|
(*codec_init_func) (w);
|
|
}
|
|
DBG (4, "sanei_w_init: done\n");
|
|
}
|
|
|
|
void
|
|
sanei_w_exit (Wire * w)
|
|
{
|
|
DBG (3, "sanei_w_exit: wire %d\n", w->io.fd);
|
|
if (w->buffer.start)
|
|
{
|
|
DBG (4, "sanei_w_exit: freeing buffer\n");
|
|
free (w->buffer.start);
|
|
}
|
|
w->buffer.start = 0;
|
|
w->buffer.size = 0;
|
|
DBG (4, "sanei_w_exit: done\n");
|
|
}
|