Added support for loading other image types to cdrom device, with use of chdman part of code [Miodrag Milanovic]

.gitattributes

@@ -1539,6 +1539,8 @@ src/lib/util/cdrom.c svneol=native#text/plain
 src/lib/util/cdrom.h svneol=native#text/plain
 src/lib/util/chd.c svneol=native#text/plain
 src/lib/util/chd.h svneol=native#text/plain
+src/lib/util/chdcd.c svneol=native#text/plain
+src/lib/util/chdcd.h svneol=native#text/plain
 src/lib/util/corefile.c svneol=native#text/plain
 src/lib/util/corefile.h svneol=native#text/plain
 src/lib/util/corestr.c svneol=native#text/plain
@@ -4938,8 +4940,6 @@ src/osd/windows/winutf8.h svneol=native#text/plain
 src/osd/windows/winutil.c svneol=native#text/plain
 src/osd/windows/winutil.h svneol=native#text/plain
 src/osd/windows/winwork.c svneol=native#text/plain
-src/tools/chdcd.c svneol=native#text/plain
-src/tools/chdcd.h svneol=native#text/plain
 src/tools/chdman.c svneol=native#text/plain
 src/tools/jedutil.c svneol=native#text/plain
 src/tools/ldresample.c svneol=native#text/plain

src/emu/imagedev/chd_cd.c

@@ -96,8 +96,8 @@ void cdrom_image_device::device_config_complete()
 	image_device_format *format = global_alloc_clear(image_device_format);;
 	format->m_index 	  = 0;
 	format->m_name        = "chdcd";
-	format->m_description = "CHD CD-ROM drive";
-	format->m_extensions  = "chd";
+	format->m_description = "CD-ROM drive";
+	format->m_extensions  = "chd,cue,toc,nrg,gdi";
 	format->m_optspec     = cd_option_spec;
 	format->m_next		  = NULL;
 
@@ -129,15 +129,21 @@ bool cdrom_image_device::call_load()
 
 	if (software_entry() == NULL)
 	{
-		err = chd_open_file( image_core_file(), CHD_OPEN_READ, NULL, &chd );	/* CDs are never writeable */
-		if ( err )
-			goto error;
+		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 */
-	m_cdrom_handle = cdrom_open( chd );
+	if (chd) {
+		m_cdrom_handle = cdrom_open( chd );
+	} else {
+		m_cdrom_handle = cdrom_open( m_image_name );
+	}
 	if ( ! m_cdrom_handle )
 		goto error;
 

src/lib/lib.mak

@@ -34,6 +34,7 @@ UTILOBJS = \
 	$(LIBOBJ)/util/bitmap.o \
 	$(LIBOBJ)/util/cdrom.o \
 	$(LIBOBJ)/util/chd.o \
+	$(LIBOBJ)/util/chdcd.o \
 	$(LIBOBJ)/util/corefile.o \
 	$(LIBOBJ)/util/corestr.o \
 	$(LIBOBJ)/util/coreutil.o \

src/lib/util/cdrom.c

@@ -48,7 +48,7 @@
 #include "cdrom.h"
 
 #include <stdlib.h>
-
+#include "chdcd.h"
 
 
 /***************************************************************************
@@ -74,9 +74,11 @@ struct _cdrom_file
 {
 	chd_file *			chd;				/* CHD file */
 	cdrom_toc			cdtoc;				/* TOC for the CD */
+	chdcd_track_input_info track_info;		/* track info */
 	UINT32				hunksectors;		/* sectors per hunk */
 	UINT32				cachehunk;			/* which hunk is cached */
 	UINT8 *				cache;				/* cache of the current hunk */
+	core_file *			fhandle[CD_MAX_TRACKS];/* file handle */
 };
 
 
@@ -122,6 +124,80 @@ INLINE UINT32 physical_to_chd_lba(cdrom_file *file, UINT32 physlba, UINT32 *trac
     BASE FUNCTIONALITY
 ***************************************************************************/
 
+cdrom_file *cdrom_open(const char *inputfile)
+{	
+	int i;
+	cdrom_file *file;
+	UINT32 physofs, chdofs;	
+	
+	/* allocate memory for the CD-ROM file */
+	file = (cdrom_file *)malloc(sizeof(cdrom_file));
+	if (file == NULL)
+		return NULL;
+
+	/* setup the CDROM module and get the disc info */
+	chd_error err = chdcd_parse_toc(inputfile, &file->cdtoc, &file->track_info);
+	if (err != CHDERR_NONE)
+	{
+		fprintf(stderr, "Error reading input file: %s\n", chd_error_string(err));
+		return NULL;
+	}
+
+	/* fill in the data */
+	file->chd = NULL;
+	file->hunksectors = 1;
+	file->cachehunk = -1;
+
+	LOG(("CD has %d tracks\n", file->cdtoc.numtrks));
+
+	for (i = 0; i < file->cdtoc.numtrks; i++)
+	{
+		file_error filerr = core_fopen(file->track_info.fname[i], OPEN_FLAG_READ, &file->fhandle[i]);
+		if (filerr != FILERR_NONE)
+		{
+			fprintf(stderr, "Unable to open file: %s\n", file->track_info.fname[i]);
+			return NULL;
+		}
+	}
+	/* calculate the starting frame for each track, keeping in mind that CHDMAN
+       pads tracks out with extra frames to fit hunk size boundries
+    */
+	physofs = chdofs = 0;
+	for (i = 0; i < file->cdtoc.numtrks; i++)
+	{
+		file->cdtoc.tracks[i].physframeofs = physofs;
+		file->cdtoc.tracks[i].chdframeofs = chdofs;
+
+		physofs += file->cdtoc.tracks[i].frames;
+		chdofs  += file->cdtoc.tracks[i].frames;
+		chdofs  += file->cdtoc.tracks[i].extraframes;
+
+		LOG(("Track %02d is format %d subtype %d datasize %d subsize %d frames %d extraframes %d physofs %d chdofs %d\n", i+1,
+			file->cdtoc.tracks[i].trktype,
+			file->cdtoc.tracks[i].subtype,
+			file->cdtoc.tracks[i].datasize,
+			file->cdtoc.tracks[i].subsize,
+			file->cdtoc.tracks[i].frames,
+			file->cdtoc.tracks[i].extraframes,
+			file->cdtoc.tracks[i].physframeofs,
+			file->cdtoc.tracks[i].chdframeofs));
+	}
+
+	/* fill out dummy entries for the last track to help our search */
+	file->cdtoc.tracks[i].physframeofs = physofs;
+	file->cdtoc.tracks[i].chdframeofs = chdofs;
+
+	/* allocate a cache */
+	file->cache = (UINT8 *)malloc(CD_FRAME_SIZE);
+	if (file->cache == NULL)
+	{
+		free(file);
+		return NULL;
+	}
+
+	return file;	
+}
+
 /*-------------------------------------------------
     cdrom_open - "open" a CD-ROM file from an
     already-opened CHD file
@@ -215,6 +291,12 @@ void cdrom_close(cdrom_file *file)
 	/* free the cache */
 	if (file->cache)
 		free(file->cache);
+		
+	for (int i = 0; i < file->cdtoc.numtrks; i++)
+	{
+		core_fclose(file->fhandle[i]);
+	}
+		
 	free(file);
 }
 
@@ -639,9 +721,32 @@ static chd_error read_sector_into_cache(cdrom_file *file, UINT32 lbasector, UINT
 	/* if we haven't cached this hunk, read it now */
 	if (file->cachehunk != hunknum)
 	{
-		err = chd_read(file->chd, hunknum, file->cache);
-		if (err != CHDERR_NONE)
-			return err;
+		if (file->chd) {
+			err = chd_read(file->chd, hunknum, file->cache);
+			if (err != CHDERR_NONE)
+				return err;
+		} else {		
+			core_file *srcfile = file->fhandle[*tracknum];
+
+			UINT64 sourcefileoffset = file->track_info.offset[*tracknum];
+			int bytespersector = file->cdtoc.tracks[*tracknum].datasize + file->cdtoc.tracks[*tracknum].subsize;			
+
+			sourcefileoffset += chdsector * bytespersector;
+
+			core_fseek(srcfile, sourcefileoffset, SEEK_SET);
+			core_fread(srcfile, file->cache, bytespersector);
+
+			if (file->track_info.swap[*tracknum])					
+			{
+				for (int swapindex = 0; swapindex < 2352; swapindex += 2 )
+				{
+					int swaptemp = file->cache[ swapindex ];
+					file->cache[ swapindex ] = file->cache[ swapindex + 1 ];
+					file->cache[ swapindex + 1 ] = swaptemp;
+				}
+			}
+		}
+		
 		file->cachehunk = hunknum;
 	}
 	return CHDERR_NONE;

src/lib/util/cdrom.h

@@ -130,6 +130,8 @@ struct _cdrom_toc
 cdrom_file *cdrom_open(chd_file *chd);
 void cdrom_close(cdrom_file *file);
 
+cdrom_file *cdrom_open(const char *inputfile);
+
 /* core read access */
 UINT32 cdrom_read_data(cdrom_file *file, UINT32 lbasector, void *buffer, UINT32 datatype);
 UINT32 cdrom_read_subcode(cdrom_file *file, UINT32 lbasector, void *buffer);

src/tools/tools.mak

@@ -83,7 +83,6 @@ romcmp$(EXE): $(ROMCMPOBJS) $(LIBUTIL) $(ZLIB) $(EXPAT) $(LIBOCORE)
 
 CHDMANOBJS = \
 	$(TOOLSOBJ)/chdman.o \
-	$(TOOLSOBJ)/chdcd.o \
 
 chdman$(EXE): $(VERSIONOBJ) $(CHDMANOBJS) $(LIBUTIL) $(ZLIB) $(EXPAT) $(LIBOCORE)
 	@echo Linking $@...