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author Miodrag Milanovic <mmicko@gmail.com>2015-11-08 12:56:12 +0100
committer Miodrag Milanovic <mmicko@gmail.com>2015-11-08 12:56:12 +0100
commit7c19aac60e12d6f5ea301bdb34d7826a01e0b06f (patch)
treef310d86aa2c6bfc19d115307dedde4eb0cd52dad /src/lib/util/harddisk.cpp
parenta57b46ae933badd7441ce1644711dbb851e2b504 (diff)
Rename *.c -> *.cpp in our source (nw)
Diffstat (limited to 'src/lib/util/harddisk.cpp')
-rw-r--r--src/lib/util/harddisk.cpp161
1 files changed, 161 insertions, 0 deletions
diff --git a/src/lib/util/harddisk.cpp b/src/lib/util/harddisk.cpp
new file mode 100644
index 00000000000..b1082f3234f
--- /dev/null
+++ b/src/lib/util/harddisk.cpp
@@ -0,0 +1,161 @@
+// license:BSD-3-Clause
+// copyright-holders:Aaron Giles
+/***************************************************************************
+
+ hardisk.c
+
+ Generic MAME hard disk implementation, with differencing files
+
+***************************************************************************/
+
+#include <assert.h>
+
+#include "harddisk.h"
+
+#include <stdlib.h>
+
+
+/***************************************************************************
+ TYPE DEFINITIONS
+***************************************************************************/
+
+struct hard_disk_file
+{
+ chd_file * chd; /* CHD file */
+ hard_disk_info info; /* hard disk info */
+};
+
+
+
+/***************************************************************************
+ CORE IMPLEMENTATION
+***************************************************************************/
+
+/*-------------------------------------------------
+ hard_disk_open - open a hard disk handle,
+ given a chd_file
+-------------------------------------------------*/
+
+hard_disk_file *hard_disk_open(chd_file *chd)
+{
+ int cylinders, heads, sectors, sectorbytes;
+ hard_disk_file *file;
+ std::string metadata;
+ chd_error err;
+
+ /* punt if no CHD */
+ if (chd == NULL)
+ return NULL;
+
+ /* read the hard disk metadata */
+ err = chd->read_metadata(HARD_DISK_METADATA_TAG, 0, metadata);
+ if (err != CHDERR_NONE)
+ return NULL;
+
+ /* parse the metadata */
+ if (sscanf(metadata.c_str(), HARD_DISK_METADATA_FORMAT, &cylinders, &heads, &sectors, &sectorbytes) != 4)
+ return NULL;
+
+ /* allocate memory for the hard disk file */
+ file = (hard_disk_file *)malloc(sizeof(hard_disk_file));
+ if (file == NULL)
+ return NULL;
+
+ /* fill in the data */
+ file->chd = chd;
+ file->info.cylinders = cylinders;
+ file->info.heads = heads;
+ file->info.sectors = sectors;
+ file->info.sectorbytes = sectorbytes;
+ return file;
+}
+
+
+/*-------------------------------------------------
+ hard_disk_close - close a hard disk handle
+-------------------------------------------------*/
+
+void hard_disk_close(hard_disk_file *file)
+{
+ free(file);
+}
+
+
+/*-------------------------------------------------
+ hard_disk_get_chd - get a handle to a CHD
+ from a hard disk
+-------------------------------------------------*/
+
+chd_file *hard_disk_get_chd(hard_disk_file *file)
+{
+ return file->chd;
+}
+
+
+/*-------------------------------------------------
+ hard_disk_get_info - return information about
+ a hard disk
+-------------------------------------------------*/
+
+/**
+ * @fn hard_disk_info *hard_disk_get_info(hard_disk_file *file)
+ *
+ * @brief Hard disk get information.
+ *
+ * @param [in,out] file If non-null, the file.
+ *
+ * @return null if it fails, else a hard_disk_info*.
+ */
+
+hard_disk_info *hard_disk_get_info(hard_disk_file *file)
+{
+ return &file->info;
+}
+
+
+/*-------------------------------------------------
+ hard_disk_read - read sectors from a hard
+ disk
+-------------------------------------------------*/
+
+/**
+ * @fn UINT32 hard_disk_read(hard_disk_file *file, UINT32 lbasector, void *buffer)
+ *
+ * @brief Hard disk read.
+ *
+ * @param [in,out] file If non-null, the file.
+ * @param lbasector The lbasector.
+ * @param [in,out] buffer If non-null, the buffer.
+ *
+ * @return An UINT32.
+ */
+
+UINT32 hard_disk_read(hard_disk_file *file, UINT32 lbasector, void *buffer)
+{
+ chd_error err = file->chd->read_units(lbasector, buffer);
+ return (err == CHDERR_NONE);
+}
+
+
+/*-------------------------------------------------
+ hard_disk_write - write sectors to a hard
+ disk
+-------------------------------------------------*/
+
+/**
+ * @fn UINT32 hard_disk_write(hard_disk_file *file, UINT32 lbasector, const void *buffer)
+ *
+ * @brief Hard disk write.
+ *
+ * @param [in,out] file If non-null, the file.
+ * @param lbasector The lbasector.
+ * @param buffer The buffer.
+ *
+ * @return An UINT32.
+ */
+
+UINT32 hard_disk_write(hard_disk_file *file, UINT32 lbasector, const void *buffer)
+{
+ chd_error err = file->chd->write_units(lbasector, buffer);
+ return (err == CHDERR_NONE);
+}