X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=fbgfx;a=blobdiff_plain;f=src%2Fconscr.c;fp=src%2Fconscr.c;h=4c56fb019dca448515d475ebf9fcad0f54d4234f;hp=0000000000000000000000000000000000000000;hb=70c067c2da05fb71f3d2de115cefbc225eff3667;hpb=21180fdf54f0c578af0959df088de308ce25ca61

diff --git a/src/conscr.c b/src/conscr.c
new file mode 100644
index 0000000..4c56fb0
--- /dev/null
+++ b/src/conscr.c
@@ -0,0 +1,86 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "screen.h"
+#include "demo.h"
+
+static int init(void);
+static void destroy(void);
+static void start(long trans_time);
+static void stop(long trans_time);
+static void draw(void);
+
+static struct screen scr = {
+	"console",
+	init,
+	destroy,
+	start,
+	stop,
+	draw
+};
+
+static void *saved_fb;
+static int fbsize;
+static long trans_start, trans_dur;
+
+struct screen *console_screen(void)
+{
+	return &scr;
+}
+
+static int init(void)
+{
+	fbsize = fb_width * fb_height * fb_depth / 8;
+
+	if(!(saved_fb = malloc(fbsize))) {
+		perror("failed to allocate memory");
+		return -1;
+	}
+	memcpy(saved_fb, fb_pixels, fbsize);
+	return 0;
+}
+
+static void destroy(void)
+{
+	memcpy(fb_pixels, saved_fb, fbsize);
+	free(saved_fb);
+}
+
+static void start(long trans_time)
+{
+}
+
+static void stop(long trans_time)
+{
+	trans_start = time_msec;
+	trans_dur = trans_time;
+}
+
+static void draw(void)
+{
+	int i, pixsz = fb_depth / 8;
+	long elapsed, offs, rem;
+	unsigned char *dptr = fb_pixels;
+	unsigned char *sptr = saved_fb;
+
+	if(!trans_start) {
+		return;
+	}
+	printf("console draw\n");
+
+	elapsed = time_msec - trans_start;
+	offs = fb_width * elapsed / trans_dur;
+	rem = fb_width - offs;
+
+	for(i=0; i<fb_height; i++) {
+		if(offs > 0) {
+			memset(dptr, 0, offs * pixsz);
+		}
+		if(rem > 0) {
+			memcpy(dptr + offs * pixsz, sptr, rem * pixsz);
+		}
+
+		dptr += fb_width * pixsz;
+		sptr += fb_width * pixsz;
+	}
+}