/********************************************************************* Code to interface the image code with CHD-CD core. Based on harddriv.c by Raphael Nabet 2003 *********************************************************************/ #include "emu.h" #include "cdrom.h" #include "chd_cd.h" static OPTION_GUIDE_START(cd_option_guide) OPTION_INT('K', "hunksize", "Hunk Bytes") OPTION_GUIDE_END static const char cd_option_spec[] = "K512/1024/2048/[4096]"; // device type definition const device_type CDROM = &device_creator; //------------------------------------------------- // cdrom_image_device - constructor //------------------------------------------------- cdrom_image_device::cdrom_image_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, CDROM, "CD-ROM Image", tag, owner, clock, "cdrom_image", __FILE__), device_image_interface(mconfig, *this) { } cdrom_image_device::cdrom_image_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source) : device_t(mconfig, type, name, tag, owner, clock, shortname, source), device_image_interface(mconfig, *this) { } //------------------------------------------------- // 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() { // inherit a copy of the static data const cdrom_interface *intf = reinterpret_cast(static_config()); if (intf != NULL) *static_cast(this) = *intf; // or initialize to defaults if none provided else { memset(&m_interface, 0, sizeof(m_interface)); memset(&m_device_displayinfo, 0, sizeof(m_device_displayinfo)); } m_extension_list = "chd,cue,toc,nrg,gdi,iso,cdr"; m_formatlist.append(*global_alloc(image_device_format("chdcd", "CD-ROM drive", m_extension_list, cd_option_spec))); // set brief and instance name update_names(); } const option_guide *cdrom_image_device::create_option_guide() const { return cd_option_guide; } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void cdrom_image_device::device_start() { // try to locate the CHD from a DISK_REGION chd_file *chd = get_disk_handle( machine(), owner()->tag() ); if( chd != NULL ) { m_cdrom_handle = cdrom_open( chd ); } else { m_cdrom_handle = NULL; } } void cdrom_image_device::device_stop() { if (m_cdrom_handle) cdrom_close(m_cdrom_handle); if( m_self_chd.opened() ) m_self_chd.close(); } bool cdrom_image_device::call_load() { chd_error err = (chd_error)0; chd_file *chd = NULL; astring tempstring; if (m_cdrom_handle) cdrom_close(m_cdrom_handle); if (software_entry() == NULL) { if (strstr(m_image_name,".chd") && is_loaded()) { err = m_self_chd.open( *image_core_file() ); /* CDs are never writeable */ if ( err ) goto error; chd = &m_self_chd; } } else { chd = get_disk_handle(device().machine(), device().subtag(tempstring,"cdrom")); } /* open the CHD file */ if (chd) { m_cdrom_handle = cdrom_open( chd ); } else { m_cdrom_handle = cdrom_open( m_image_name ); } if ( ! m_cdrom_handle ) goto error; return IMAGE_INIT_PASS; error: if ( chd && chd == &m_self_chd ) m_self_chd.close( ); if ( err ) seterror( IMAGE_ERROR_UNSPECIFIED, chd_file::error_string( err ) ); return IMAGE_INIT_FAIL; } void cdrom_image_device::call_unload() { assert(m_cdrom_handle); cdrom_close(m_cdrom_handle); m_cdrom_handle = NULL; if( m_self_chd.opened() ) m_self_chd.close(); }