140 lines
2.6 KiB
C
140 lines
2.6 KiB
C
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/*
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Save the screen to PCX file
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*/
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#include <plib.h>
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#include <wlib.h>
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#define BUFLEN 256
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GLREF_D WSERV_SPEC *wserv_channel;
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LOCAL_D VOID *fcb;
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LOCAL_D UBYTE *pbuf;
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LOCAL_D UBYTE *pobuf;
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LOCAL_D UBYTE obuf[BUFLEN];
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LOCAL_C VOID FlushBuffer(VOID)
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{
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f_write(fcb,&obuf[0],pobuf-&obuf[0]);
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pobuf=&obuf[0];
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}
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LOCAL_C VOID putb(INT b)
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{
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*pobuf++=b;
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if (pobuf==&obuf[BUFLEN])
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FlushBuffer();
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}
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LOCAL_C INT rev(INT dat)
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{
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INT i;
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INT rdat;
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rdat=0;
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for (i=0;i<8;i++)
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rdat|=((dat>>i)&1)<<(7-i);
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return(rdat^0xff);
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}
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LOCAL_C VOID WritePCXLine(UBYTE *buf,UINT len)
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{
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UBYTE *p;
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UINT end;
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UINT count;
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INT byte;
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p=buf;
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byte=*p++;
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count=1;
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do
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{
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end=(p==(&buf[0]+len));
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if (byte==*p && count<0x3f && !end)
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{
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count++;
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p++;
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}
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else
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{
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byte=rev(byte);
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if (count>1 || (byte&0xC0)==0xC0)
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putb(count+0xC0);
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putb(byte);
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byte=*p++;
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count=1;
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}
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} while (!end);
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}
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LOCAL_C VOID WriteHeader(TEXT *name,UINT width,UINT height,UINT bytewid)
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{
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struct
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{
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UBYTE manuf;
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UBYTE hard;
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UBYTE encod;
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UBYTE bitpx;
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P_RECT rect;
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WORD hres;
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WORD vres;
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UBYTE clrma[48];
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UBYTE vmode;
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UBYTE nplanes;
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WORD bplin;
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UBYTE padding[60];
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} header;
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f_open(&fcb,name,P_FREPLACE|P_FSTREAM|P_FUPDATE);
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p_bfil(&header,sizeof(header),0);
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header.manuf=10;
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header.hard=3;
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header.encod=TRUE;
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header.bitpx=1;
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header.rect.br.x=width-1;
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header.rect.br.y=height-1;
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header.hres=640;
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header.vres=480;
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header.nplanes=1;
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header.bplin=bytewid;
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f_write(fcb,&header,sizeof(header));
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}
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#pragma save, ENTER_CALL
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LOCAL_C INT WritePCXFile(TEXT *name)
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{
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UINT len;
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P_POINT size;
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P_POINT line;
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size=wserv_channel->conn.info.pixels;
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len=((size.x+15)>>3)&~1;
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WriteHeader(name,size.x,size.y,len);
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pbuf=f_alloc(len);
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line.x=0;
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for (line.y=0;line.y<size.y;line.y++)
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{
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gPeekBit(0,&line,size.x,pbuf);
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WritePCXLine(pbuf,len);
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}
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FlushBuffer();
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return(0);
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}
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#pragma restore
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GLDEF_C INT pcxScreenSave(TEXT *name)
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{
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INT ret;
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fcb=NULL;
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pbuf=NULL;
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pobuf=&obuf[0];
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ret=p_enter2((VOID *)WritePCXFile,name);
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p_free(pbuf);
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p_close(fcb);
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return(ret);
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}
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