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/* -*-c-*- -------------- mix_device.c :
* Implementation of the functions declared in mix_device.h
* ------------------------------------------------------------------
* Copyright (C) 2000, 2001 Free Software Foundation, Inc.
*
* 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.
*
*/
#include "mix_file.h"
#include "xmix_device.h"
/*
Set the directory for mix device files (by default, it's ".")
If the dir does not exist, it is created.
*/
gboolean
mix_device_set_dir (const gchar *dirname)
{
if (mix_stat_dir (dirname, "devices"))
{
if (DEV_DIR_) g_free (DEV_DIR_);
DEV_DIR_ = g_strdup (dirname);
return TRUE;
}
else
return FALSE;
}
mix_device_t *
mix_device_new (mix_device_type_t type)
{
mix_device_t *result = NULL;
g_return_val_if_fail (type < mix_dev_INVALID, NULL);
result = g_new (mix_device_t, 1);
construct_device_ (result, type);
return result;
}
mix_device_t *
mix_device_new_with_name (mix_device_type_t type, const gchar *name)
{
mix_device_t *result = NULL;
g_return_val_if_fail (name != NULL, NULL);
g_return_val_if_fail (type < mix_dev_INVALID, NULL);
result = g_new (mix_device_t, 1);
construct_device_with_name_ (result, type, name);
return result;
}
/*
Create a new device with a given type and stream
*/
mix_device_t *
mix_device_new_with_file (mix_device_type_t type, FILE *file)
{
mix_device_t *result = NULL;
g_return_val_if_fail (file != NULL, NULL);
g_return_val_if_fail (type < mix_dev_INVALID, NULL);
result = g_new (mix_device_t, 1);
construct_device_with_file_ (result, type, file);
return result;
}
void
mix_device_delete (mix_device_t *dev)
{
if (dev != NULL)
{
(dev->vtable->destroy) (dev);
g_free (dev);
}
}
mix_device_type_t
mix_device_type (const mix_device_t *dev)
{
g_return_val_if_fail (dev != NULL, mix_dev_INVALID);
return dev->type;
}
const char *
mix_device_get_name (const mix_device_t *dev)
{
g_return_val_if_fail (dev != NULL, NULL);
return mix_file_base_name(GET_FILE_(dev));
}
/*
Get the device block size
*/
size_t
mix_device_block_size (const mix_device_t *dev)
{
g_return_val_if_fail (dev != NULL, 0);
return SIZES_[dev->type];
}
/*
Get the device io mode
*/
mix_device_mode_t
mix_device_mode (const mix_device_t *dev)
{
g_return_val_if_fail (dev != NULL, 0);
return MODES_[dev->type];
}
/*
Write a block to the device.
*/
gboolean
mix_device_write (mix_device_t *dev, const mix_word_t *block)
{
g_return_val_if_fail (dev != NULL, FALSE);
g_return_val_if_fail (block != NULL, FALSE);
g_assert (dev->vtable != NULL);
return (dev->vtable->write) (dev, block);
}
gboolean
mix_device_read (mix_device_t *dev, mix_word_t *block)
{
g_return_val_if_fail (dev != NULL, FALSE);
g_return_val_if_fail (block != NULL, FALSE);
g_assert (dev->vtable != NULL);
return (dev->vtable->read) (dev, block);
}
gboolean
mix_device_ioc (mix_device_t *dev, mix_short_t arg)
{
g_return_val_if_fail (dev != NULL, FALSE);
g_assert (dev->vtable != NULL);
return (dev->vtable->ioc) (dev, arg);
}
gboolean
mix_device_busy (const mix_device_t *dev)
{
g_return_val_if_fail (dev != NULL, FALSE);
return (dev->vtable->busy) (dev);
}
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