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comparison lib64gfx.c @ 810:cbe263ad963c

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Some work on charset conversion.
author Matti Hamalainen <ccr@tnsp.org>
date Thu, 15 May 2014 02:05:53 +0300
parents 5d158c4321bb
children aebc2f8b2c2d
comparison
equal deleted inserted replaced
809:eba3b87f3f84 810:cbe263ad963c
701 // Convert a generic "C64" format bitmap in DMC64Image struct to 701 // Convert a generic "C64" format bitmap in DMC64Image struct to
702 // a indexed/paletted bitmap image. 702 // a indexed/paletted bitmap image.
703 int dmC64ConvertGenericBMP2Image(DMImage *dst, const DMC64Image *src, const BOOL doubleMC) 703 int dmC64ConvertGenericBMP2Image(DMImage *dst, const DMC64Image *src, const BOOL doubleMC)
704 { 704 {
705 Uint8 *dp = dst->data; 705 Uint8 *dp = dst->data;
706 int divisor = doubleMC ? 4 : 8, 706 int yc;
707 wdivisor = doubleMC ? 2 : 1,
708 yc;
709 707
710 // Sanity check arguments 708 // Sanity check arguments
711 if (dst == NULL || src == NULL) 709 if (dst == NULL || src == NULL)
712 return DMERR_NULLPTR; 710 return DMERR_NULLPTR;
713 711
738 *d++ = src->screen[0][scroffs] & 15; 736 *d++ = src->screen[0][scroffs] & 15;
739 } 737 }
740 } 738 }
741 else 739 else
742 { 740 {
741 const int
742 wdivisor = doubleMC ? 2 : 1,
743 divisor = doubleMC ? 4 : 8;
744
743 for (xc = 0; xc < dst->width / wdivisor; xc++) 745 for (xc = 0; xc < dst->width / wdivisor; xc++)
744 { 746 {
745 const int x = xc / divisor; 747 const int x = xc / divisor;
746 const int scroffs = scroffsy + x; 748 const int scroffs = scroffsy + x;
747 const int bmoffs = bmoffsy + (x * 8) + yb; 749 const int bmoffs = bmoffsy + (x * 8) + yb;
763 vbank = yb; 765 vbank = yb;
764 break; 766 break;
765 } 767 }
766 c = dmC64GetMCColor(src, (src->bitmap[0][bmoffs] >> v) & 3, 0, vbank, scroffs); 768 c = dmC64GetMCColor(src, (src->bitmap[0][bmoffs] >> v) & 3, 0, vbank, scroffs);
767 *d++ = c; 769 *d++ = c;
768 *d++ = c; 770 if (doubleMC)
771 *d++ = c;
769 } 772 }
770 else 773 else
771 if (src->type & D64_FMT_ILACE) 774 if (src->type & D64_FMT_ILACE)
772 { 775 {
773 *d++ = dmC64GetMCColor(src, (src->bitmap[0][bmoffs] >> v) & 3, 0, src->laceBank1, scroffs); 776 *d++ = dmC64GetMCColor(src, (src->bitmap[0][bmoffs] >> v) & 3, 0, src->laceBank1, scroffs);
774 *d++ = dmC64GetMCColor(src, (src->bitmap[1][bmoffs] >> v) & 3, 0, src->laceBank2, scroffs); 777 if (doubleMC)
778 *d++ = dmC64GetMCColor(src, (src->bitmap[1][bmoffs] >> v) & 3, 0, src->laceBank2, scroffs);
775 } 779 }
776 else 780 else
777 { 781 {
778 c = dmC64GetMCColor(src, (src->bitmap[0][bmoffs] >> v) & 3, 0, 0, scroffs); 782 c = dmC64GetMCColor(src, (src->bitmap[0][bmoffs] >> v) & 3, 0, 0, scroffs);
779 *d++ = c; 783 *d++ = c;
780 *d++ = c; 784 if (doubleMC)
785 *d++ = c;
781 } 786 }
782 } 787 }
783 } 788 }
784 dp += dst->pitch; 789 dp += dst->pitch;
785 } 790 }