mirror of
https://github.com/jfdelnero/HxCFloppyEmulator.git
synced 2026-07-27 19:56:23 +00:00
606 lines
18 KiB
C
606 lines
18 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 : a2r_loader.c
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// Contains: AppleSauce A2R Stream 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 <sys/stat.h>
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#include <math.h>
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#include "types.h"
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#include "internal_libhxcfe.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 "a2r_loader.h"
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#include "a2r_format.h"
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#include "libhxcadaptor.h"
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#include "misc/env.h"
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#include "misc/script_exec.h"
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//#define A2RDEBUG 1
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int A2R_libIsValidDiskFile( HXCFE_IMGLDR * imgldr_ctx, HXCFE_IMGLDR_FILEINFOS * imgfile )
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{
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a2r_header * a2rh;
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imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"A2R_libIsValidDiskFile");
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if( hxc_checkfileext(imgfile->path,"a2r",SYS_PATH_TYPE) )
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{
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a2rh = (a2r_header *)&imgfile->file_header;
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if( strncmp((char*)&a2rh->sign,"A2R2",4) || (a2rh->ff_byte != 0xFF) )
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{
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imgldr_ctx->hxcfe->hxc_printf(MSG_ERROR,"A2R_libIsValidDiskFile : Bad file header !");
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return HXCFE_BADFILE;
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}
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imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"A2R_libIsValidDiskFile : A2R 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,"A2R_libIsValidDiskFile : non A2R file !");
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return HXCFE_BADFILE;
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}
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}
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static HXCFE_SIDE* import_a2r_stream(HXCFE* floppycontext, a2r_capture * captureinfo, unsigned char * stream, int size, short * rpm, float timecoef, int bitrate, int phasecorrection, int filter, int filterpasses,int bmpexport )
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{
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uint32_t * tmp_stream;
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uint32_t cumul,offset_in,offset_out;
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HXCFE_FXSA * fxs;
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HXCFE_SIDE* currentside;
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HXCFE_TRKSTREAM *track_dump;
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int index_stream_pos;
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int total;
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uint8_t cur_value;
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char tmp_filename[512];
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currentside = NULL;
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tmp_stream = malloc(size * sizeof(uint32_t));
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if(tmp_stream)
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{
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memset(tmp_stream,0,size * sizeof(uint32_t));
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total = 0;
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cumul = 0;
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offset_in = 0;
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offset_out = 0;
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index_stream_pos = 0;
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for(offset_in = 0; offset_in < size ; offset_in++)
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{
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cur_value = stream[offset_in];
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cumul += cur_value;
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total += cur_value;
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if( cur_value != 0xFF )
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{
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tmp_stream[offset_out++] = cumul;
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cumul = 0;
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if( total < captureinfo->estimated_loop_point )
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{
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index_stream_pos = offset_out;
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}
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}
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}
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fxs = hxcfe_initFxStream(floppycontext);
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if(fxs)
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{
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// hxcfe_FxStream_setBitrate(fxs,bitrate);
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// hxcfe_FxStream_setPhaseCorrectionFactor(fxs,phasecorrection);
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// hxcfe_FxStream_setFilterParameters(fxs,filterpasses,filter);
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hxcfe_FxStream_setResolution(fxs,125000); // 125 ns per tick
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track_dump = hxcfe_FxStream_ImportStream(fxs,tmp_stream,32,(offset_out),HXCFE_STREAMCHANNEL_TYPE_RLEEVT, "data", NULL);
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if(track_dump)
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{
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hxcfe_FxStream_ChangeSpeed(fxs,track_dump,timecoef);
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hxcfe_FxStream_AddIndex(fxs,track_dump,0,0,FXSTRM_INDEX_MAININDEX);
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hxcfe_FxStream_AddIndex(fxs,track_dump,index_stream_pos,0,FXSTRM_INDEX_MAININDEX);
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currentside = hxcfe_FxStream_AnalyzeAndGetTrack(fxs,track_dump);
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if(currentside)
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{
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if(rpm)
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*rpm = (short)( 60 / GetTrackPeriod(floppycontext,currentside) );
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}
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else
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{
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floppycontext->hxc_printf(MSG_ERROR,"import_a2r_stream : null track !");
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}
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if( bmpexport )
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{
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sprintf(tmp_filename,"track%.2d.%d.bmp",captureinfo->location>>1,captureinfo->location&1);
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hxcfe_FxStream_ExportToBmp(fxs,track_dump, tmp_filename);
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}
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if(currentside)
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{
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currentside->stream_dump = track_dump;
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}
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else
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{
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hxcfe_FxStream_FreeStream(fxs,track_dump);
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}
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}
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hxcfe_deinitFxStream(fxs);
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}
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free(tmp_stream);
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tmp_stream = NULL;
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}
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return currentside;
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}
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int A2R_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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int mintrack,maxtrack;
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int minside,maxside;
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short rpm;
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unsigned short i,j;
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int k,l,len;
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int singleside;
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HXCFE_CYLINDER* currentcylinder;
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HXCFE_SIDE * curside;
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int nbside;
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float timecoef;
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int tracklen;
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char * folder;
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char * filepath;
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int previous_bit;
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int phasecorrection;
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int filterpasses,filter;
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int bitrate,bmp_export;
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//int mac_clv;
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int foffset,filesize;
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int stream_start_pos;
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int max_location;
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int skip_inter_tracks;
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int track_pos;
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a2r_header a2rh;
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a2r_info info;
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a2r_capture capture;
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int str_offset;
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envvar_entry * backup_env;
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envvar_entry * tmp_env;
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int last_location;
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a2r_chunk_header a2r_chunkh;
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unsigned char *tmp_buffer;
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imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"A2R_libLoad_DiskFile");
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backup_env = NULL;
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rpm = 300;
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if(imgfile)
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{
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mintrack=0;
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maxtrack=0;
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minside=0;
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maxside=0;
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filesize = hxc_getfilesize(imgfile);
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if(filesize < 8)
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return HXCFE_BADFILE;
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f = hxc_fopen(imgfile,"rb");
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if(f)
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{
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nbside = 2;
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/*
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if( hxcfe_getEnvVarValue( imgldr_ctx->hxcfe, "FLUXSTREAM_IMPORT_PCCAV_TO_MACCLV" ) & 1 )
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mac_clv = 1;
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else
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mac_clv = 0;
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*/
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skip_inter_tracks = hxcfe_getEnvVarValue( imgldr_ctx->hxcfe, "A2RLOADER_SKIP_INTER_TRACKS" );
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singleside = hxcfe_getEnvVarValue( imgldr_ctx->hxcfe, "A2RLOADER_SINGLE_SIDE" )&1;
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phasecorrection = hxcfe_getEnvVarValue( imgldr_ctx->hxcfe, "FLUXSTREAM_PLL_PHASE_CORRECTION_DIVISOR" );
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filterpasses = hxcfe_getEnvVarValue( imgldr_ctx->hxcfe, "FLUXSTREAM_BITRATE_FILTER_PASSES" );
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filter = hxcfe_getEnvVarValue( imgldr_ctx->hxcfe, "FLUXSTREAM_BITRATE_FILTER_WINDOW" );
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bitrate = hxcfe_getEnvVarValue( imgldr_ctx->hxcfe, "A2RLOADER_BITRATE" );
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bmp_export = hxcfe_getEnvVarValue( imgldr_ctx->hxcfe, "A2RLOADER_BMPEXPORT" );
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timecoef = 1;
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if( !strcmp(hxcfe_getEnvVar( imgldr_ctx->hxcfe, "FLUXSTREAM_RPMFIX", NULL),"360TO300RPM") )
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{
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timecoef=(float)1.2;
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}
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if( !strcmp(hxcfe_getEnvVar( imgldr_ctx->hxcfe, "FLUXSTREAM_RPMFIX", NULL),"300TO360RPM") )
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{
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timecoef=(float)0.833;
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}
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hxc_fread(&a2rh, sizeof(a2r_header), f);
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if( strncmp((char*)&a2rh.sign,"A2R2",4) || (a2rh.ff_byte != 0xFF) )
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{
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hxc_fclose(f);
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imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"A2R_libLoad_DiskFile : bad Header !");
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return HXCFE_BADFILE;
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}
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tmp_env = initEnv( (envvar_entry *)imgldr_ctx->hxcfe->envvar, NULL );
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if(!tmp_env)
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{
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hxc_fclose(f);
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return HXCFE_INTERNALERROR;
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}
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backup_env = imgldr_ctx->hxcfe->envvar;
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imgldr_ctx->hxcfe->envvar = tmp_env;
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setget_env_script(imgldr_ctx->hxcfe->scriptctx, tmp_env);
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len=hxc_getpathfolder(imgfile,0,SYS_PATH_TYPE);
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folder = (char*)malloc(len+1);
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if( !folder )
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{
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hxc_fclose(f);
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tmp_env = (envvar_entry *)imgldr_ctx->hxcfe->envvar;
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imgldr_ctx->hxcfe->envvar = backup_env;
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setget_env_script(imgldr_ctx->hxcfe->scriptctx, backup_env);
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deinitEnv( tmp_env );
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return HXCFE_INTERNALERROR;
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}
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hxc_getpathfolder(imgfile,folder,SYS_PATH_TYPE);
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filepath = malloc( strlen(imgfile) + 32 );
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if(filepath)
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{
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sprintf(filepath,"%s%s",folder,"config.script");
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hxcfe_execScriptFile(imgldr_ctx->hxcfe, filepath);
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free(filepath);
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filepath = NULL;
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}
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imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"Loading A2R file...");
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foffset = ftell(f);
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while( foffset < filesize )
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{
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memset(&a2r_chunkh,0,sizeof(a2r_chunk_header));
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hxc_fread(&a2r_chunkh, sizeof(a2r_chunk_header), f);
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if(!strncmp((char*)&a2r_chunkh.sign,"STRM",4))
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{
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imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"A2R STRM CHUNK - %d bytes",a2r_chunkh.chunk_size);
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last_location = -1;
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stream_start_pos = ftell(f);
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mintrack=0;
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maxtrack=0;
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minside=0;
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maxside=0;
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max_location = 0;
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str_offset = 0;
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while( str_offset < a2r_chunkh.chunk_size - 1)
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{
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hxc_fread(&capture, sizeof(a2r_capture), f);
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fseek(f,capture.data_length,SEEK_CUR);
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if(max_location < capture.location)
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max_location = capture.location;
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str_offset += sizeof(a2r_capture);
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str_offset += capture.data_length;
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}
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fseek(f,stream_start_pos,SEEK_SET);
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maxside = nbside;
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maxtrack = max_location / nbside;
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imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"%d track (%d - %d), %d sides (%d - %d)",( maxtrack - mintrack ) + 1,mintrack,maxtrack,maxside - minside,minside,maxside);
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floppydisk->floppyiftype = GENERIC_SHUGART_DD_FLOPPYMODE;
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floppydisk->floppyBitRate = VARIABLEBITRATE;
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floppydisk->floppyNumberOfTrack = maxtrack + 1;
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if(skip_inter_tracks)
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floppydisk->floppyNumberOfTrack /= 4;
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if(singleside)
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floppydisk->floppyNumberOfSide = 1;
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else
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floppydisk->floppyNumberOfSide = nbside;
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floppydisk->floppySectorPerTrack = -1;
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floppydisk->tracks=(HXCFE_CYLINDER**)calloc( 1, sizeof(HXCFE_CYLINDER*)*(floppydisk->floppyNumberOfTrack+1) );
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if(!floppydisk->tracks)
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{
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hxc_fclose(f);
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tmp_env = (envvar_entry *)imgldr_ctx->hxcfe->envvar;
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imgldr_ctx->hxcfe->envvar = backup_env;
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setget_env_script(imgldr_ctx->hxcfe->scriptctx, backup_env);
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deinitEnv( tmp_env );
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return HXCFE_INTERNALERROR;
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}
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str_offset = 0;
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while( str_offset < a2r_chunkh.chunk_size - 1)
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{
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hxc_fread(&capture, sizeof(a2r_capture), f);
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rpm = 300;
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imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"A2R STRM CAPTURE : New Capture block");
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imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"A2R STRM CAPTURE : location : %d", capture.location);
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imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"A2R STRM CAPTURE : capture_type : %d", capture.capture_type);
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imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"A2R STRM CAPTURE : data_length : %d", capture.data_length);
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imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"A2R STRM CAPTURE : estimated_loop_point : %d", capture.estimated_loop_point);
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tmp_buffer = malloc(capture.data_length + 1);
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if(tmp_buffer)
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{
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curside = NULL;
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memset(tmp_buffer,0,capture.data_length + 1);
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hxc_fread(tmp_buffer, capture.data_length, f);
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if( (last_location != capture.location) && (!skip_inter_tracks || !(capture.location&3) ) )
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{
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curside = import_a2r_stream(imgldr_ctx->hxcfe, &capture, tmp_buffer, capture.data_length, &rpm, timecoef, bitrate, phasecorrection, filter, filterpasses, bmp_export );
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last_location = capture.location;
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if(curside)
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{
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tracklen = curside->tracklen /8;
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if(curside->tracklen & 7)
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tracklen++;
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// Remove sticked data bits ...
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previous_bit = 0;
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for(k=0;k<tracklen;k++)
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{
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if(previous_bit)
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{
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if(curside->databuffer[k] & 0x80)
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{
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//curside->databuffer[k-1] = curside->databuffer[k-1] ^ 0x01;
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//curside->flakybitsbuffer[k-1] = curside->flakybitsbuffer[k-1] | (0x01);
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curside->databuffer[k] = curside->databuffer[k] ^ 0x80;
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curside->flakybitsbuffer[k] = curside->flakybitsbuffer[k] | (0x80);
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}
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}
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for(l=0;l<7;l++)
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{
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if((curside->databuffer[k] & (0xC0>>l)) == (0xC0>>l))
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{
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curside->databuffer[k] = curside->databuffer[k] ^ (0x40>>l);
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curside->flakybitsbuffer[k] = curside->flakybitsbuffer[k] | (0x40>>l);
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}
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}
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previous_bit = curside->databuffer[k] & 1;
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}
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}
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if(capture.location <= max_location)
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{
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track_pos = capture.location >> (nbside-1);
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if(skip_inter_tracks)
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track_pos /= 4;
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if(!floppydisk->tracks[track_pos])
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{
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floppydisk->tracks[track_pos] = allocCylinderEntry(rpm,floppydisk->floppyNumberOfSide);
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}
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currentcylinder=floppydisk->tracks[track_pos];
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if(nbside == 2)
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currentcylinder->sides[ capture.location & 1 ] = curside;
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else
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currentcylinder->sides[ 0 ] = curside;
|
|
|
|
}
|
|
|
|
hxcfe_imgCallProgressCallback(imgldr_ctx,capture.location,max_location );
|
|
}
|
|
|
|
free(tmp_buffer);
|
|
tmp_buffer = NULL;
|
|
}
|
|
|
|
str_offset += sizeof(a2r_capture);
|
|
str_offset += capture.data_length;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(!strncmp((char*)&a2r_chunkh.sign,"META",4))
|
|
{
|
|
imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"A2R META CHUNK - %d bytes",a2r_chunkh.chunk_size);
|
|
tmp_buffer = malloc(a2r_chunkh.chunk_size + 1);
|
|
if(tmp_buffer)
|
|
{
|
|
memset(tmp_buffer,0,a2r_chunkh.chunk_size + 1);
|
|
hxc_fread(tmp_buffer, a2r_chunkh.chunk_size, f);
|
|
imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"A2R META :\n%s", tmp_buffer);
|
|
free(tmp_buffer);
|
|
tmp_buffer = NULL;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if(!strncmp((char*)&a2r_chunkh.sign,"INFO",4))
|
|
{
|
|
imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"A2R INFO CHUNK - %d bytes",a2r_chunkh.chunk_size);
|
|
hxc_fread(&info, sizeof(a2r_info), f);
|
|
|
|
if( info.disk_type == 2 )
|
|
{
|
|
skip_inter_tracks = 0;
|
|
nbside = 2;
|
|
}
|
|
else
|
|
nbside = 1;
|
|
|
|
switch(info.version)
|
|
{
|
|
case 1:
|
|
imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"A2R INFO : Version : %d", info.version);
|
|
imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"A2R INFO : Creator : %s", info.creator);
|
|
imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"A2R INFO : disk_type : %d", info.disk_type);
|
|
imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"A2R INFO : write_protected : %d", info.write_protected);
|
|
imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"A2R INFO : synchronized : %d", info.synchronized);
|
|
break;
|
|
|
|
default:
|
|
imgldr_ctx->hxcfe->hxc_printf(MSG_WARNING,"UNKNOWN INFO Version : %d !", info.version);
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"A2R UNKNOWN CHUNK !");
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
fseek(f,foffset + sizeof(a2r_chunk_header) + a2r_chunkh.chunk_size, SEEK_SET);
|
|
|
|
foffset = ftell(f);
|
|
|
|
imgldr_ctx->hxcfe->hxc_printf(MSG_DEBUG,"Scan offset : %d",foffset);
|
|
}
|
|
|
|
hxc_fclose(f);
|
|
|
|
// Adjust track timings.
|
|
for(j=0;j<floppydisk->floppyNumberOfTrack;j++)
|
|
{
|
|
for(i=0;i<floppydisk->floppyNumberOfSide;i++)
|
|
{
|
|
curside = floppydisk->tracks[j]->sides[i];
|
|
if(curside && floppydisk->tracks[0]->sides[0])
|
|
{
|
|
AdjustTrackPeriod(imgldr_ctx->hxcfe,floppydisk->tracks[0]->sides[0],curside);
|
|
}
|
|
}
|
|
}
|
|
|
|
imgldr_ctx->hxcfe->hxc_printf(MSG_INFO_1,"track file successfully loaded and encoded!");
|
|
|
|
hxcfe_sanityCheck(imgldr_ctx->hxcfe,floppydisk);
|
|
|
|
tmp_env = (envvar_entry *)imgldr_ctx->hxcfe->envvar;
|
|
imgldr_ctx->hxcfe->envvar = backup_env;
|
|
setget_env_script(imgldr_ctx->hxcfe->scriptctx, backup_env);
|
|
deinitEnv( tmp_env );
|
|
|
|
free(folder);
|
|
folder = NULL;
|
|
|
|
return HXCFE_NOERROR;
|
|
}
|
|
}
|
|
|
|
return HXCFE_BADFILE;
|
|
}
|
|
|
|
int A2R_libGetPluginInfo(HXCFE_IMGLDR * imgldr_ctx,uint32_t infotype,void * returnvalue)
|
|
{
|
|
static const char plug_id[]="A2R_FLUX_STREAM";
|
|
static const char plug_desc[]="A2R Stream Loader";
|
|
static const char plug_ext[]="a2r";
|
|
|
|
plugins_ptr plug_funcs=
|
|
{
|
|
(ISVALIDDISKFILE) A2R_libIsValidDiskFile,
|
|
(LOADDISKFILE) A2R_libLoad_DiskFile,
|
|
(WRITEDISKFILE) NULL,
|
|
(GETPLUGININFOS) A2R_libGetPluginInfo
|
|
};
|
|
|
|
return libGetPluginInfo(
|
|
imgldr_ctx,
|
|
infotype,
|
|
returnvalue,
|
|
plug_id,
|
|
plug_desc,
|
|
&plug_funcs,
|
|
plug_ext
|
|
);
|
|
}
|