summaryrefslogtreecommitdiff
path: root/dvbosd.c
diff options
context:
space:
mode:
authorKlaus Schmidinger <vdr@tvdr.de>2000-10-03 10:34:48 +0200
committerKlaus Schmidinger <vdr@tvdr.de>2000-10-03 10:34:48 +0200
commit6a50f37f25b43112d4a1fad8a5057089548dfc3c (patch)
treec3a28722d1c7b04c12174fe748aead391e7c0ed8 /dvbosd.c
parentb4faf3787a24c43b0a22b3ee695374012c992eb2 (diff)
downloadvdr-6a50f37f25b43112d4a1fad8a5057089548dfc3c.tar.gz
vdr-6a50f37f25b43112d4a1fad8a5057089548dfc3c.tar.bz2
Faster OSD by using bitmap
Diffstat (limited to 'dvbosd.c')
-rw-r--r--dvbosd.c175
1 files changed, 175 insertions, 0 deletions
diff --git a/dvbosd.c b/dvbosd.c
new file mode 100644
index 00000000..2ab01bc3
--- /dev/null
+++ b/dvbosd.c
@@ -0,0 +1,175 @@
+/*
+ * dvbosd.c: Interface to the DVB On Screen Display
+ *
+ * See the main source file 'vdr.c' for copyright information and
+ * how to reach the author.
+ *
+ * $Id: dvbosd.c 1.1 2000/10/03 10:10:28 kls Exp $
+ */
+
+#include "dvbosd.h"
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/unistd.h>
+#include "tools.h"
+
+// --- cBitmap ---------------------------------------------------------------
+
+cBitmap::cBitmap(int Width, int Height)
+{
+ width = Width;
+ height = Height;
+ bitmap = NULL;
+ font = NULL;
+ if (width > 0 && height > 0) {
+ bitmap = new char[width * height];
+ if (bitmap) {
+ Clean();
+ memset(bitmap, clrTransparent, width * height);
+ SetFont(fontOsd);
+ }
+ else
+ esyslog(LOG_ERR, "ERROR: can't allocate bitmap!");
+ }
+ else
+ esyslog(LOG_ERR, "ERROR: illegal bitmap parameters (%d, %d)!", width, height);
+}
+
+cBitmap::~cBitmap()
+{
+ delete font;
+ delete bitmap;
+}
+
+void cBitmap::SetFont(eDvbFont Font)
+{
+ delete font;
+ font = new cFont(Font);
+}
+
+bool cBitmap::Dirty(void)
+{
+ return dirtyX2 >= 0;
+}
+
+void cBitmap::Clean(void)
+{
+ dirtyX1 = width;
+ dirtyY1 = height;
+ dirtyX2 = -1;
+ dirtyY2 = -1;
+}
+
+void cBitmap::SetPixel(int x, int y, eDvbColor Color)
+{
+ if (bitmap) {
+ if (0 <= x && x < width && 0 <= y && y < height) {
+ if (bitmap[width * y + x] != Color) {
+ bitmap[width * y + x] = Color;
+ if (dirtyX1 > x) dirtyX1 = x;
+ if (dirtyY1 > y) dirtyY1 = y;
+ if (dirtyX2 < x) dirtyX2 = x;
+ if (dirtyY2 < y) dirtyY2 = y;
+ }
+ }
+ }
+}
+
+void cBitmap::Text(int x, int y, const char *s, eDvbColor ColorFg, eDvbColor ColorBg)
+{
+ if (bitmap) {
+ int h = font->Height(s);
+ while (s && *s) {
+ const cFont::tCharData *CharData = font->CharData(*s++);
+ for (int row = 0; row < h; row++) {
+ cFont::tPixelData PixelData = CharData->lines[row];
+ for (int col = CharData->width; col-- > 0; ) {
+ SetPixel(x + col, y + row, (PixelData & 1) ? ColorFg : ColorBg);
+ PixelData >>= 1;
+ }
+ }
+ x += CharData->width;
+ }
+ }
+}
+
+void cBitmap::Fill(int x1, int y1, int x2, int y2, eDvbColor Color)
+{
+ if (bitmap) {
+ for (int y = y1; y <= y2; y++)
+ for (int x = x1; x <= x2; x++)
+ SetPixel(x, y, Color);
+ }
+}
+
+void cBitmap::Clear(void)
+{
+ Fill(0, 0, width - 1, height - 1, clrBackground);
+}
+
+// --- cDvbOsd ---------------------------------------------------------------
+
+cDvbOsd::cDvbOsd(int VideoDev, int x1, int y1, int x2, int y2, int Bpp)
+:cBitmap(x2 - x1 + 1, y2 - y1 + 1)
+{
+ videoDev = VideoDev;
+ if (videoDev >= 0)
+ Cmd(OSD_Open, Bpp, x1, y1, x2, y2);
+ else
+ esyslog(LOG_ERR, "ERROR: illegal video device handle (%d)!", videoDev);
+}
+
+cDvbOsd::~cDvbOsd()
+{
+ if (videoDev >= 0)
+ Cmd(OSD_Close);
+}
+
+void cDvbOsd::Cmd(OSD_Command cmd, int color, int x0, int y0, int x1, int y1, const void *data)
+{
+ if (videoDev >= 0) {
+ struct drawcmd dc;
+ dc.cmd = cmd;
+ dc.color = color;
+ dc.x0 = x0;
+ dc.y0 = y0;
+ dc.x1 = x1;
+ dc.y1 = y1;
+ dc.data = (void *)data;
+ ioctl(videoDev, VIDIOCSOSDCOMMAND, &dc);
+ usleep(10); // XXX Workaround for a driver bug (cInterface::DisplayChannel() displayed texts at wrong places
+ // XXX and sometimes the OSD was no longer displayed).
+ // XXX Increase the value if the problem still persists on your particular system.
+ // TODO Check if this is still necessary with driver versions after 0.7.
+ }
+}
+
+void cDvbOsd::Flush(void)
+{
+ if (Dirty()) {
+ //XXX Workaround: apparently the bitmap sent to the driver always has to be a multiple
+ //XXX of 8 bits wide, and (dx * dy) also has to be a multiple of 8.
+ //TODO Fix driver (should be able to handle any size bitmaps!)
+ while ((dirtyX1 > 0 || dirtyX2 < width - 1) && ((dirtyX2 - dirtyX1) & 7) != 7) {
+ if (dirtyX2 < width - 1)
+ dirtyX2++;
+ else if (dirtyX1 > 0)
+ dirtyX1--;
+ }
+ while ((dirtyY1 > 0 || dirtyY2 < height - 1) && (((dirtyX2 - dirtyX1 + 1) * (dirtyY2 - dirtyY1 + 1) / 2) & 7) != 0) {
+ if (dirtyY2 < height - 1)
+ dirtyY2++;
+ else if (dirtyY1 > 0)
+ dirtyY1--;
+ }
+ while ((dirtyX1 > 0 || dirtyX2 < width - 1) && (((dirtyX2 - dirtyX1 + 1) * (dirtyY2 - dirtyY1 + 1) / 2) & 7) != 0) {
+ if (dirtyX2 < width - 1)
+ dirtyX2++;
+ else if (dirtyX1 > 0)
+ dirtyX1--;
+ }
+ Cmd(OSD_SetBlock, width, dirtyX1, dirtyY1, dirtyX2, dirtyY2, &bitmap[dirtyY1 * width + dirtyX1]);
+ Clean();
+ }
+}
+