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-rw-r--r--trunk/src/emu/imagedev/chd_cd.c165
1 files changed, 165 insertions, 0 deletions
diff --git a/trunk/src/emu/imagedev/chd_cd.c b/trunk/src/emu/imagedev/chd_cd.c
new file mode 100644
index 00000000000..dea7020cf1f
--- /dev/null
+++ b/trunk/src/emu/imagedev/chd_cd.c
@@ -0,0 +1,165 @@
+/*********************************************************************
+
+ 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 const char *const error_strings[] =
+{
+ "no error",
+ "no drive interface",
+ "out of memory",
+ "invalid file",
+ "invalid parameter",
+ "invalid data",
+ "file not found",
+ "requires parent",
+ "file not writeable",
+ "read error",
+ "write error",
+ "codec error",
+ "invalid parent",
+ "hunk out of range",
+ "decompression error",
+ "compression error",
+ "can't create file",
+ "can't verify file"
+ "operation not supported",
+ "can't find metadata",
+ "invalid metadata size",
+ "unsupported CHD version"
+};
+
+static const char *chd_get_error_string(int chderr)
+{
+ if ((chderr < 0 ) || (chderr >= ARRAY_LENGTH(error_strings)))
+ return NULL;
+ return error_strings[chderr];
+}
+
+
+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>;
+
+//-------------------------------------------------
+// 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, "Cdrom", tag, owner, clock),
+ 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<const cdrom_interface *>(static_config());
+ if (intf != NULL)
+ *static_cast<cdrom_interface *>(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));
+ }
+
+ image_device_format *format = global_alloc_clear(image_device_format);;
+ format->m_index = 0;
+ format->m_name = "chdcd";
+ format->m_description = "CD-ROM drive";
+ format->m_extensions = "chd,cue,toc,nrg,gdi";
+ format->m_optspec = cd_option_spec;
+ format->m_next = NULL;
+
+ m_formatlist = format;
+
+ // 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()
+{
+ m_cdrom_handle = NULL;
+}
+
+bool cdrom_image_device::call_load()
+{
+ chd_error err = (chd_error)0;
+ chd_file *chd = NULL;
+ astring tempstring;
+
+ if (software_entry() == NULL)
+ {
+ if (strstr(m_image_name,".chd")) {
+ err = chd_open_file( image_core_file(), CHD_OPEN_READ, NULL, &chd ); /* CDs are never writeable */
+ if ( err )
+ goto error;
+ }
+ } 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_close( chd );
+ if ( err )
+ seterror( IMAGE_ERROR_UNSPECIFIED, chd_get_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;
+}