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-rw-r--r--lib/libvgl/bitmap.c314
1 files changed, 314 insertions, 0 deletions
diff --git a/lib/libvgl/bitmap.c b/lib/libvgl/bitmap.c
new file mode 100644
index 000000000000..2beeb8ee68c4
--- /dev/null
+++ b/lib/libvgl/bitmap.c
@@ -0,0 +1,314 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1991-1997 Søren Schmidt
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer,
+ * in this position and unchanged.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+#include <signal.h>
+#include <sys/fbio.h>
+#include "vgl.h"
+
+#define min(x, y) (((x) < (y)) ? (x) : (y))
+
+static byte mask[8] = {0xff, 0x7f, 0x3f, 0x1f, 0x0f, 0x07, 0x03, 0x01};
+static int color2bit[16] = {0x00000000, 0x00000001, 0x00000100, 0x00000101,
+ 0x00010000, 0x00010001, 0x00010100, 0x00010101,
+ 0x01000000, 0x01000001, 0x01000100, 0x01000101,
+ 0x01010000, 0x01010001, 0x01010100, 0x01010101};
+
+static void
+WriteVerticalLine(VGLBitmap *dst, int x, int y, int width, byte *line)
+{
+ int bwidth, i, pos, last, planepos, start_offset, end_offset, offset;
+ int len;
+ unsigned int word = 0;
+ byte *address;
+ byte *VGLPlane[4];
+
+ switch (dst->Type) {
+ case VIDBUF4:
+ case VIDBUF4S:
+ start_offset = (x & 0x07);
+ end_offset = (x + width) & 0x07;
+ bwidth = (width + start_offset) / 8;
+ if (end_offset)
+ bwidth++;
+ VGLPlane[0] = VGLBuf;
+ VGLPlane[1] = VGLPlane[0] + bwidth;
+ VGLPlane[2] = VGLPlane[1] + bwidth;
+ VGLPlane[3] = VGLPlane[2] + bwidth;
+ pos = 0;
+ planepos = 0;
+ last = 8 - start_offset;
+ while (pos < width) {
+ word = 0;
+ while (pos < last && pos < width)
+ word = (word<<1) | color2bit[line[pos++]&0x0f];
+ VGLPlane[0][planepos] = word;
+ VGLPlane[1][planepos] = word>>8;
+ VGLPlane[2][planepos] = word>>16;
+ VGLPlane[3][planepos] = word>>24;
+ planepos++;
+ last += 8;
+ }
+ planepos--;
+ if (end_offset) {
+ word <<= (8 - end_offset);
+ VGLPlane[0][planepos] = word;
+ VGLPlane[1][planepos] = word>>8;
+ VGLPlane[2][planepos] = word>>16;
+ VGLPlane[3][planepos] = word>>24;
+ }
+ outb(0x3ce, 0x01); outb(0x3cf, 0x00); /* set/reset enable */
+ outb(0x3ce, 0x08); outb(0x3cf, 0xff); /* bit mask */
+ for (i=0; i<4; i++) {
+ outb(0x3c4, 0x02);
+ outb(0x3c5, 0x01<<i);
+ outb(0x3ce, 0x04);
+ outb(0x3cf, i);
+ pos = VGLAdpInfo.va_line_width*y + x/8;
+ if (dst->Type == VIDBUF4) {
+ if (end_offset)
+ VGLPlane[i][planepos] |= dst->Bitmap[pos+planepos] & mask[end_offset];
+ if (start_offset)
+ VGLPlane[i][0] |= dst->Bitmap[pos] & ~mask[start_offset];
+ bcopy(&VGLPlane[i][0], dst->Bitmap + pos, bwidth);
+ } else { /* VIDBUF4S */
+ if (end_offset) {
+ offset = VGLSetSegment(pos + planepos);
+ VGLPlane[i][planepos] |= dst->Bitmap[offset] & mask[end_offset];
+ }
+ offset = VGLSetSegment(pos);
+ if (start_offset)
+ VGLPlane[i][0] |= dst->Bitmap[offset] & ~mask[start_offset];
+ for (last = bwidth; ; ) {
+ len = min(VGLAdpInfo.va_window_size - offset, last);
+ bcopy(&VGLPlane[i][bwidth - last], dst->Bitmap + offset, len);
+ pos += len;
+ last -= len;
+ if (last <= 0)
+ break;
+ offset = VGLSetSegment(pos);
+ }
+ }
+ }
+ break;
+ case VIDBUF8X:
+ address = dst->Bitmap + VGLAdpInfo.va_line_width * y + x/4;
+ for (i=0; i<4; i++) {
+ outb(0x3c4, 0x02);
+ outb(0x3c5, 0x01 << ((x + i)%4));
+ for (planepos=0, pos=i; pos<width; planepos++, pos+=4)
+ address[planepos] = line[pos];
+ if ((x + i)%4 == 3)
+ ++address;
+ }
+ break;
+ case VIDBUF8S:
+ case VIDBUF16S:
+ case VIDBUF24S:
+ case VIDBUF32S:
+ width = width * dst->PixelBytes;
+ pos = (dst->VXsize * y + x) * dst->PixelBytes;
+ while (width > 0) {
+ offset = VGLSetSegment(pos);
+ i = min(VGLAdpInfo.va_window_size - offset, width);
+ bcopy(line, dst->Bitmap + offset, i);
+ line += i;
+ pos += i;
+ width -= i;
+ }
+ break;
+ case MEMBUF:
+ case VIDBUF8:
+ case VIDBUF16:
+ case VIDBUF24:
+ case VIDBUF32:
+ address = dst->Bitmap + (dst->VXsize * y + x) * dst->PixelBytes;
+ bcopy(line, address, width * dst->PixelBytes);
+ break;
+ default:
+ ;
+ }
+}
+
+int
+__VGLBitmapCopy(VGLBitmap *src, int srcx, int srcy,
+ VGLBitmap *dst, int dstx, int dsty, int width, int hight)
+{
+ byte *buffer, *p;
+ int mousemerge, srcline, dstline, yend, yextra, ystep;
+
+ mousemerge = 0;
+ if (hight < 0) {
+ hight = -hight;
+ mousemerge = (dst == VGLDisplay &&
+ VGLMouseOverlap(dstx, dsty, width, hight));
+ if (mousemerge)
+ buffer = alloca(width*src->PixelBytes);
+ }
+ if (srcx>src->VXsize || srcy>src->VYsize
+ || dstx>dst->VXsize || dsty>dst->VYsize)
+ return -1;
+ if (srcx < 0) {
+ width=width+srcx; dstx-=srcx; srcx=0;
+ }
+ if (srcy < 0) {
+ hight=hight+srcy; dsty-=srcy; srcy=0;
+ }
+ if (dstx < 0) {
+ width=width+dstx; srcx-=dstx; dstx=0;
+ }
+ if (dsty < 0) {
+ hight=hight+dsty; srcy-=dsty; dsty=0;
+ }
+ if (srcx+width > src->VXsize)
+ width=src->VXsize-srcx;
+ if (srcy+hight > src->VYsize)
+ hight=src->VYsize-srcy;
+ if (dstx+width > dst->VXsize)
+ width=dst->VXsize-dstx;
+ if (dsty+hight > dst->VYsize)
+ hight=dst->VYsize-dsty;
+ if (width < 0 || hight < 0)
+ return -1;
+ yend = srcy + hight;
+ yextra = 0;
+ ystep = 1;
+ if (src->Bitmap == dst->Bitmap && srcy < dsty) {
+ yend = srcy - 1;
+ yextra = hight - 1;
+ ystep = -1;
+ }
+ for (srcline = srcy + yextra, dstline = dsty + yextra; srcline != yend;
+ srcline += ystep, dstline += ystep) {
+ p = src->Bitmap+(srcline*src->VXsize+srcx)*dst->PixelBytes;
+ if (mousemerge && VGLMouseOverlap(dstx, dstline, width, 1)) {
+ bcopy(p, buffer, width*src->PixelBytes);
+ p = buffer;
+ VGLMouseMerge(dstx, dstline, width, p);
+ }
+ WriteVerticalLine(dst, dstx, dstline, width, p);
+ }
+ return 0;
+}
+
+int
+VGLBitmapCopy(VGLBitmap *src, int srcx, int srcy,
+ VGLBitmap *dst, int dstx, int dsty, int width, int hight)
+{
+ int error;
+
+ if (hight < 0)
+ return -1;
+ if (src == VGLDisplay)
+ src = &VGLVDisplay;
+ if (src->Type != MEMBUF)
+ return -1; /* invalid */
+ if (dst == VGLDisplay) {
+ VGLMouseFreeze();
+ __VGLBitmapCopy(src, srcx, srcy, &VGLVDisplay, dstx, dsty, width, hight);
+ error = __VGLBitmapCopy(src, srcx, srcy, &VGLVDisplay, dstx, dsty,
+ width, hight);
+ if (error != 0)
+ return error;
+ src = &VGLVDisplay;
+ srcx = dstx;
+ srcy = dsty;
+ } else if (dst->Type != MEMBUF)
+ return -1; /* invalid */
+ error = __VGLBitmapCopy(src, srcx, srcy, dst, dstx, dsty, width, -hight);
+ if (dst == VGLDisplay)
+ VGLMouseUnFreeze();
+ return error;
+}
+
+VGLBitmap
+*VGLBitmapCreate(int type, int xsize, int ysize, byte *bits)
+{
+ VGLBitmap *object;
+
+ if (type != MEMBUF)
+ return NULL;
+ if (xsize < 0 || ysize < 0)
+ return NULL;
+ object = (VGLBitmap *)malloc(sizeof(*object));
+ if (object == NULL)
+ return NULL;
+ object->Type = type;
+ object->Xsize = xsize;
+ object->Ysize = ysize;
+ object->VXsize = xsize;
+ object->VYsize = ysize;
+ object->Xorigin = 0;
+ object->Yorigin = 0;
+ object->Bitmap = bits;
+ object->PixelBytes = VGLDisplay->PixelBytes;
+ return object;
+}
+
+void
+VGLBitmapDestroy(VGLBitmap *object)
+{
+ if (object->Bitmap)
+ free(object->Bitmap);
+ free(object);
+}
+
+int
+VGLBitmapAllocateBits(VGLBitmap *object)
+{
+ object->Bitmap = malloc(object->VXsize*object->VYsize*object->PixelBytes);
+ if (object->Bitmap == NULL)
+ return -1;
+ return 0;
+}
+
+void
+VGLBitmapCvt(VGLBitmap *src, VGLBitmap *dst)
+{
+ u_long color;
+ int dstpos, i, pb, size, srcpb, srcpos;
+
+ size = src->VXsize * src->VYsize;
+ srcpb = src->PixelBytes;
+ if (srcpb <= 0)
+ srcpb = 1;
+ pb = dst->PixelBytes;
+ if (pb == srcpb) {
+ bcopy(src->Bitmap, dst->Bitmap, size * pb);
+ return;
+ }
+ if (srcpb != 1)
+ return; /* not supported */
+ for (srcpos = dstpos = 0; srcpos < size; srcpos++) {
+ color = VGLrgb332ToNative(src->Bitmap[srcpos]);
+ for (i = 0; i < pb; i++, color >>= 8)
+ dst->Bitmap[dstpos++] = color;
+ }
+}
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