summaryrefslogtreecommitdiffstatshomepage
path: root/src/devices/imagedev/chd_cd.cpp
blob: 753a7b882123c73d5d632f595d978b0fa0327d7e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
// license:BSD-3-Clause
// copyright-holders:Nathan Woods, R. Belmont, Miodrag Milanovic
/*********************************************************************

    Code to interface the image code with CHD-CD core.

    Based on harddriv.c by Raphael Nabet 2003

*********************************************************************/

#include "emu.h"
#include "chd_cd.h"

#include "cdrom.h"
#include "romload.h"

// device type definition
DEFINE_DEVICE_TYPE(CDROM, cdrom_image_device, "cdrom_image", "CD-ROM Image")

//-------------------------------------------------
//  cdrom_image_device - constructor
//-------------------------------------------------

cdrom_image_device::cdrom_image_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
	: cdrom_image_device(mconfig, CDROM, tag, owner, clock)
{
}

cdrom_image_device::cdrom_image_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock)
	: device_t(mconfig, type,  tag, owner, clock),
		device_image_interface(mconfig, *this),
		m_cdrom_handle(nullptr),
		m_extension_list(nullptr),
		m_interface(nullptr)
{
}
//-------------------------------------------------
//  cdrom_image_device - destructor
//-------------------------------------------------

cdrom_image_device::~cdrom_image_device()
{
}

//-------------------------------------------------
//  device_config_complete - perform any
//  operations now that the configuration is
//  complete
//-------------------------------------------------

void cdrom_image_device::device_config_complete()
{
	m_extension_list = "chd,cue,toc,nrg,gdi,iso,cdr";

	add_format("chdcd", "CD-ROM drive", m_extension_list, "");
}

//-------------------------------------------------
//  device_start - device-specific startup
//-------------------------------------------------

void cdrom_image_device::device_start()
{
	// try to locate the CHD from a DISK_REGION
	chd_file *chd = machine().rom_load().get_disk_handle(owner()->tag() );
	if( chd != nullptr )
	{
		m_cdrom_handle = cdrom_open( chd );
	}
	else
	{
		m_cdrom_handle = nullptr;
	}
}

void cdrom_image_device::device_stop()
{
	if (m_cdrom_handle)
		cdrom_close(m_cdrom_handle);
	if( m_self_chd.opened() )
		m_self_chd.close();
}

image_init_result cdrom_image_device::call_load()
{
	std::error_condition err;
	chd_file *chd = nullptr;

	if (m_cdrom_handle)
		cdrom_close(m_cdrom_handle);

	if (!loaded_through_softlist()) {
		if (is_filetype("chd") && is_loaded()) {
			util::core_file::ptr proxy;
			err = util::core_file::open_proxy(image_core_file(), proxy);
			if (!err)
				err = m_self_chd.open(std::move(proxy)); // CDs are never writeable
			if (err)
				goto error;
			chd = &m_self_chd;
		}
	} else {
		chd = device().machine().rom_load().get_disk_handle(device().subtag("cdrom").c_str());
	}

	/* open the CHD file */
	if (chd) {
		m_cdrom_handle = cdrom_open(chd);
	} else {
		m_cdrom_handle = cdrom_open(filename());
	}
	if (!m_cdrom_handle)
		goto error;

	return image_init_result::PASS;

error:
	if (chd && chd == &m_self_chd)
		m_self_chd.close();
	if (err)
		seterror(err, nullptr);
	return image_init_result::FAIL;
}

void cdrom_image_device::call_unload()
{
	assert(m_cdrom_handle);
	cdrom_close(m_cdrom_handle);
	m_cdrom_handle = nullptr;
	if( m_self_chd.opened() )
		m_self_chd.close();
}