mirror of
https://github.com/jfdelnero/HxCFloppyEmulator.git
synced 2026-07-27 19:56:23 +00:00
405 lines
12 KiB
C
405 lines
12 KiB
C
/*
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//
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// Copyright (C) 2006-2026 Jean-François DEL NERO
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//
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// This file is part of the HxCFloppyEmulator library
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//
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// HxCFloppyEmulator may be used and distributed without restriction provided
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// that this copyright statement is not removed from the file and that any
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// derivative work contains the original copyright notice and the associated
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// disclaimer.
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//
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// HxCFloppyEmulator is free software; you can redistribute it
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// and/or modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// HxCFloppyEmulator is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// See the GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with HxCFloppyEmulator; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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//
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*/
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///////////////////////////////////////////////////////////////////////////////////
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//-------------------------------------------------------------------------------//
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//-------------------------------------------------------------------------------//
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//-----------H----H--X----X-----CCCCC----22222----0000-----0000------11----------//
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//----------H----H----X-X-----C--------------2---0----0---0----0--1--1-----------//
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//---------HHHHHH-----X------C----------22222---0----0---0----0-----1------------//
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//--------H----H----X--X----C----------2-------0----0---0----0-----1-------------//
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//-------H----H---X-----X---CCCCC-----222222----0000-----0000----1111------------//
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//-------------------------------------------------------------------------------//
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//----------------------------------------------------- http://hxc2001.free.fr --//
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///////////////////////////////////////////////////////////////////////////////////
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// File : apridisk_loader.c
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// Contains: Apricot disk floppy image loader.
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//
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// Written by: Jean-François DEL NERO
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//
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// Change History (most recent first):
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///////////////////////////////////////////////////////////////////////////////////
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "types.h"
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#include "internal_libhxcfe.h"
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#include "tracks/track_generator.h"
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#include "libhxcfe.h"
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#include "floppy_loader.h"
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#include "floppy_utils.h"
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#include "apridisk_loader.h"
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#include "apridisk_format.h"
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#include "libhxcadaptor.h"
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int ApriDisk_libIsValidDiskFile( HXCFE_IMGLDR * imgldr_ctx, HXCFE_IMGLDR_FILEINFOS * imgfile )
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{
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imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"ApriDisk_libIsValidDiskFile");
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if(imgfile)
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{
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if(!strcmp(APRIDISK_HeaderString,(char*)imgfile->file_header))
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{
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imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"ApriDisk_libIsValidDiskFile : ApriDisk file !");
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return HXCFE_VALIDFILE;
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}
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else
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{
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imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"ApriDisk_libIsValidDiskFile : ApriDisk file !");
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return HXCFE_BADFILE;
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}
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}
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return HXCFE_BADPARAMETER;
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}
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int ApriDisk_libLoad_DiskFile(HXCFE_IMGLDR * imgldr_ctx,HXCFE_FLOPPY * floppydisk,char * imgfile,void * parameters)
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{
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FILE * f;
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apridisk_data_record * data_record;
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apridisk_compressed_data * compressed_dataitem;
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int i,j;
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HXCFE_SECTCFG* sectorconfig;
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HXCFE_CYLINDER* currentcylinder;
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HXCFE_SIDE* currentside;
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int rpm;
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int interleave;
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int number_of_sector;
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int totalfilesize,k;
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unsigned char * file_buffer;
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int fileindex,newtrack;
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imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"ApriDisk_libLoad_DiskFile %s",imgfile);
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f = hxc_fopen(imgfile,"rb");
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if( f == NULL )
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{
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imgldr_ctx->hxcfe->hxc_printf(MSG_ERROR,"Cannot open %s !",imgfile);
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return HXCFE_ACCESSERROR;
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}
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totalfilesize = hxc_fgetsize(f);
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file_buffer = (unsigned char *) malloc(totalfilesize);
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if(!file_buffer)
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{
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imgldr_ctx->hxcfe->hxc_printf(MSG_ERROR,"Allocation error !");
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hxc_fclose(f);
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return HXCFE_INTERNALERROR;
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}
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memset(file_buffer,0,totalfilesize);
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hxc_fread(file_buffer,totalfilesize,f);
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hxc_fclose(f);
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f = NULL;
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fileindex = 0;
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//////////////////////////////////////////////////////
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// Header check
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if(strcmp(APRIDISK_HeaderString,(char*)&file_buffer[fileindex]))
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{
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imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"ApriDisk file !");
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return HXCFE_BADFILE;
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}
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i=0;
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floppydisk->floppyBitRate=500000;
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floppydisk->floppyiftype=GENERIC_SHUGART_DD_FLOPPYMODE;
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floppydisk->floppyNumberOfTrack=0;
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floppydisk->floppyNumberOfSide=0;
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floppydisk->floppySectorPerTrack=-1; // default value
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for(i=0;i<128;i++)
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{
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hxcfe_imgCallProgressCallback(imgldr_ctx,i,128);
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for(j=0;j<=1;j++)
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{
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number_of_sector = 0;
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sectorconfig = NULL;
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fileindex = 128;
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rpm=600;
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newtrack=0;
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interleave=1;
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do
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{
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data_record=(apridisk_data_record *)&file_buffer[fileindex];
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fileindex += sizeof(apridisk_data_record);
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switch(data_record->item_type)
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{
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case DATA_RECORD_DELETED:
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if(data_record->header_size>sizeof(apridisk_data_record))
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{
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fileindex += (data_record->header_size-sizeof(apridisk_data_record));
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}
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fileindex += (data_record->data_size);
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break;
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case DATA_RECORD_SECTOR:
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if(data_record->header_size>sizeof(apridisk_data_record))
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{
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fileindex += (data_record->header_size-sizeof(apridisk_data_record));
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}
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if((data_record->cylinder==i) && (data_record->head==j))
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{
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if((j+1)>(floppydisk->floppyNumberOfSide))
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{
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floppydisk->floppyNumberOfSide=j+1;
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}
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if((i+1)>(floppydisk->floppyNumberOfTrack))
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{
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floppydisk->floppyNumberOfTrack=i+1;
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newtrack=1;
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}
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data_record->item_type=DATA_RECORD_DELETED;
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sectorconfig = (HXCFE_SECTCFG*)realloc(sectorconfig,sizeof(HXCFE_SECTCFG)*(number_of_sector+1));
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if(sectorconfig)
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{
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memset(§orconfig[number_of_sector],0,sizeof(HXCFE_SECTCFG));
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sectorconfig[number_of_sector].cylinder = i;
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sectorconfig[number_of_sector].head = j;
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sectorconfig[number_of_sector].sector = data_record->sector;
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sectorconfig[number_of_sector].trackencoding = IBMFORMAT_DD;
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sectorconfig[number_of_sector].bitrate = floppydisk->floppyBitRate;
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sectorconfig[number_of_sector].gap3 = 255;
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switch(data_record->compression)
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{
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case DATA_NOT_COMPRESSED:
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sectorconfig[number_of_sector].sectorsize = data_record->data_size;
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sectorconfig[number_of_sector].input_data = malloc(data_record->data_size);
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if(sectorconfig[number_of_sector].input_data)
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{
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memcpy(sectorconfig[number_of_sector].input_data,&file_buffer[fileindex],data_record->data_size);
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}
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fileindex += data_record->data_size;
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break;
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case DATA_COMPRESSED:
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compressed_dataitem=(apridisk_compressed_data *)&file_buffer[fileindex];
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sectorconfig[number_of_sector].sectorsize = compressed_dataitem->count;
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sectorconfig[number_of_sector].input_data = malloc(compressed_dataitem->count);
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if(sectorconfig[number_of_sector].input_data)
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{
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memset(sectorconfig[number_of_sector].input_data,compressed_dataitem->byte,compressed_dataitem->count);
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}
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fileindex += data_record->data_size;
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break;
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default:
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imgldr_ctx->hxcfe->hxc_printf(MSG_ERROR,"Unknow compression id (%.4x) !",data_record->compression);
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sectorconfig[number_of_sector].input_data = NULL;
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break;
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}
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}
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number_of_sector++;
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}
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else
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{
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fileindex += data_record->data_size;
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}
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imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"ApriDisk_libLoad_DiskFile: item DATA_RECORD_SECTOR found. Header size=%d, Data size=%d, Sector=%d Head=%d Cylinder=%d",data_record->header_size,data_record->data_size,data_record->sector,data_record->head,data_record->cylinder);
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break;
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case DATA_RECORD_COMMENT:
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if(data_record->header_size>sizeof(apridisk_data_record))
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{
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fileindex += (data_record->header_size-sizeof(apridisk_data_record));
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}
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fileindex += data_record->data_size;
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break;
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case DATA_RECORD_CREATOR:
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if(data_record->header_size>sizeof(apridisk_data_record))
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{
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fileindex += (data_record->header_size-sizeof(apridisk_data_record));
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}
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fileindex += data_record->data_size;
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break;
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default:
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for(k=0;k<number_of_sector;k++)
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{
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hxcfe_freeSectorConfigData( 0, §orconfig[k] );
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}
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free(sectorconfig);
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return HXCFE_BADFILE;
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break;
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}
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}while(fileindex<totalfilesize);
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if(newtrack)
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{
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floppydisk->tracks = (HXCFE_CYLINDER**)realloc(floppydisk->tracks,sizeof(HXCFE_CYLINDER*)*floppydisk->floppyNumberOfTrack);
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if(floppydisk->tracks)
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{
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floppydisk->tracks[i] = (HXCFE_CYLINDER*)malloc(sizeof(HXCFE_CYLINDER));
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if(floppydisk->tracks[i])
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memset(floppydisk->tracks[i],0,sizeof(HXCFE_CYLINDER));
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}
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}
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currentcylinder = NULL;
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if(floppydisk->tracks)
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currentcylinder = floppydisk->tracks[floppydisk->floppyNumberOfTrack-1];
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if( currentcylinder )
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{
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currentcylinder->number_of_side = floppydisk->floppyNumberOfSide;
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currentcylinder->sides = (HXCFE_SIDE**)realloc(currentcylinder->sides,sizeof(HXCFE_SIDE*)*currentcylinder->number_of_side);
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//memset(currentcylinder->sides,0,sizeof(HXCFE_SIDE*)*currentcylinder->number_of_side);
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currentcylinder->floppyRPM = rpm;
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if(currentcylinder->sides)
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{
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currentside = tg_generateTrackEx((unsigned short)number_of_sector,sectorconfig,interleave,0,floppydisk->floppyBitRate,rpm,IBMFORMAT_DD,0,2500 | NO_SECTOR_UNDER_INDEX,-2500);
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if(currentcylinder->number_of_side>j)
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currentcylinder->sides[j] = currentside;
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}
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}
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if(sectorconfig)
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{
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for(k=0;k<number_of_sector;k++)
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{
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hxcfe_freeSectorConfigData( 0, §orconfig[k] );
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}
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free(sectorconfig);
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}
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}
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number_of_sector=0;
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}
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// Comment & creator extraction.
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fileindex=128;
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do
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{
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data_record=(apridisk_data_record *)&file_buffer[fileindex];
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fileindex += sizeof(apridisk_data_record);
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switch(data_record->item_type)
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{
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case DATA_RECORD_DELETED:
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if(data_record->header_size>sizeof(apridisk_data_record))
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{
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fileindex += (data_record->header_size-sizeof(apridisk_data_record));
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}
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fileindex += data_record->data_size;
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break;
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case DATA_RECORD_SECTOR:
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if(data_record->header_size>sizeof(apridisk_data_record))
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{
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fileindex += (data_record->header_size-sizeof(apridisk_data_record));
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}
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fileindex += data_record->data_size;
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break;
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case DATA_RECORD_COMMENT:
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if(data_record->header_size>sizeof(apridisk_data_record))
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{
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fileindex += (data_record->header_size-sizeof(apridisk_data_record));
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}
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imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"ApriDisk_libLoad_DiskFile: item DATA_RECORD_COMMENT found: %s",&file_buffer[fileindex]);
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fileindex += data_record->data_size;
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break;
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case DATA_RECORD_CREATOR:
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if(data_record->header_size>sizeof(apridisk_data_record))
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{
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fileindex += (data_record->header_size-sizeof(apridisk_data_record));
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}
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imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"ApriDisk_libLoad_DiskFile: item DATA_RECORD_CREATOR found: %s",&file_buffer[fileindex]);
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fileindex += data_record->data_size;
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break;
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default:
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return HXCFE_BADFILE;
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break;
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}
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}while(fileindex<totalfilesize);
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free(file_buffer);
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hxcfe_sanityCheck(imgldr_ctx->hxcfe,floppydisk);
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return HXCFE_NOERROR;
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}
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int ApriDisk_libGetPluginInfo(HXCFE_IMGLDR * imgldr_ctx,uint32_t infotype,void * returnvalue)
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{
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static const char plug_id[]="APRIDISK";
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static const char plug_desc[]="APRIDISK Loader";
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static const char plug_ext[]="dsk";
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plugins_ptr plug_funcs=
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{
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(ISVALIDDISKFILE) ApriDisk_libIsValidDiskFile,
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(LOADDISKFILE) ApriDisk_libLoad_DiskFile,
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(WRITEDISKFILE) 0,
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(GETPLUGININFOS) ApriDisk_libGetPluginInfo
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};
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return libGetPluginInfo(
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imgldr_ctx,
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infotype,
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returnvalue,
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plug_id,
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plug_desc,
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&plug_funcs,
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plug_ext
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);
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}
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