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// license:BSD-3-Clause
// copyright-holders:Nathan Woods, Miodrag Milanovic
/*********************************************************************
snapquik.h
Snapshots and quickloads
*********************************************************************/
#ifndef MAME_DEVICES_IMAGEDEV_SNAPQUIK_H
#define MAME_DEVICES_IMAGEDEV_SNAPQUIK_H
#pragma once
#include "softlist_dev.h"
// ======================> snapshot_image_device
class snapshot_image_device : public device_t,
public device_image_interface
{
public:
typedef device_delegate<image_init_result (device_image_interface &, const char *, int)> load_delegate;
// construction/destruction
snapshot_image_device(const machine_config &mconfig, const char *tag, device_t *owner, const char* extensions, attotime delay = attotime::zero)
: snapshot_image_device(mconfig, tag, owner, 0U)
{
set_extensions(extensions);
set_delay(delay);
}
snapshot_image_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual ~snapshot_image_device();
void set_interface(const char *interface) { m_interface = interface; }
// image-level overrides
virtual image_init_result call_load() override;
virtual const software_list_loader &get_software_list_loader() const override { return image_software_list_loader::instance(); }
virtual iodevice_t image_type() const override { return IO_SNAPSHOT; }
virtual bool is_readable() const override { return 1; }
virtual bool is_writeable() const override { return 0; }
virtual bool is_creatable() const override { return 0; }
virtual bool must_be_loaded() const override { return 0; }
virtual bool is_reset_on_load() const override { return 0; }
virtual const char *image_interface() const override { return m_interface; }
virtual const char *file_extensions() const override { return m_file_extensions; }
void set_extensions(const char *ext) { m_file_extensions = ext; }
void set_delay(attotime delay) { m_delay = delay; }
template <typename... T> void set_load_callback(T &&... args) { m_load = load_delegate(std::forward<T>(args)...); }
protected:
snapshot_image_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
// device-level overrides
virtual void device_start() override;
TIMER_CALLBACK_MEMBER(process_snapshot_or_quickload);
load_delegate m_load; /* loading function */
const char * m_file_extensions; /* file extensions */
const char * m_interface;
attotime m_delay; /* loading delay */
emu_timer *m_timer;
};
// device type definition
DECLARE_DEVICE_TYPE(SNAPSHOT, snapshot_image_device)
// ======================> quickload_image_device
class quickload_image_device : public snapshot_image_device
{
public:
// construction/destruction
quickload_image_device(const machine_config &mconfig, const char *tag, device_t *owner, const char* extensions, attotime delay = attotime::zero)
: quickload_image_device(mconfig, tag, owner, 0U)
{
set_extensions(extensions);
set_delay(delay);
}
quickload_image_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0U);
virtual iodevice_t image_type() const override { return IO_QUICKLOAD; }
};
// device type definition
DECLARE_DEVICE_TYPE(QUICKLOAD, quickload_image_device)
/***************************************************************************
DEVICE CONFIGURATION MACROS
***************************************************************************/
#define SNAPSHOT_LOAD_MEMBER(_name) image_init_result _name(device_image_interface &image, const char *file_type, int snapshot_size)
#define DECLARE_SNAPSHOT_LOAD_MEMBER(_name) SNAPSHOT_LOAD_MEMBER(_name)
#define QUICKLOAD_LOAD_MEMBER(_name) image_init_result _name(device_image_interface &image, const char *file_type, int quickload_size)
#define DECLARE_QUICKLOAD_LOAD_MEMBER(_name) QUICKLOAD_LOAD_MEMBER(_name)
#endif // MAME_DEVICES_IMAGEDEV_SNAPQUIK_H
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