Separated the actual DVB hardware OSD implementation from the abstract OSD interface

1 files changed, 46 insertions, 499 deletions

diff --git a/dvbosd.c b/dvbosd.c
index eb962613..227d1ff9 100644
--- a/dvbosd.c
+++ b/dvbosd.c
@@ -1,383 +1,45 @@
 /*
- * dvbosd.c: Interface to the DVB On Screen Display
+ * dvbosd.c: Implementation of the DVB On Screen Display
  *
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: dvbosd.c 1.13 2002/04/13 11:34:48 kls Exp $
+ * $Id: dvbosd.c 1.14 2002/05/10 14:22:04 kls Exp $
  */
 
 #include "dvbosd.h"
 #include <signal.h>
 #include <sys/ioctl.h>
-#include <sys/stat.h>
 #include <sys/unistd.h>
 #include "tools.h"
 
-// --- cPalette --------------------------------------------------------------
-
-cPalette::cPalette(int Bpp)
-{
-  maxColors = 1 << Bpp;
-  numColors = 0;
-  full = false;
-}
-
-int cPalette::Index(eDvbColor Color)
-{
-#if __BYTE_ORDER == __BIG_ENDIAN
-  Color = eDvbColor(((Color & 0xFF) << 24) | ((Color & 0xFF00) << 8) | ((Color & 0xFF0000) >> 8) | ((Color & 0xFF000000) >> 24));
-#endif
-  for (int i = 0; i < numColors; i++) {
-      if (color[i] == Color) {
-         used[i] = true;
-         return i;
-         }
-      }
-  if (!full) {
-     if (numColors < maxColors) {
-        color[numColors++] = Color;
-        used[numColors - 1] = true;
-        fetched[numColors - 1] = false;
-        return numColors - 1;
-        }
-     for (int i = maxColors; --i >= 0; ) {
-         if (!used[i]) {
-            color[i] = Color;
-            used[i] = true;
-            fetched[i] = false;
-            return i;
-            }
-         }
-     esyslog(LOG_ERR, "ERROR: too many different colors used in palette");
-     full = true;
-     }
-  return 0;
-}
-
-void cPalette::Reset(void)
-{
-  for (int i = 0; i < numColors; i++)
-      used[i] = false;
-  full = false;
-}
-
-const eDvbColor *cPalette::Colors(int &FirstColor, int &LastColor)
-{
-  for (FirstColor = 0; FirstColor < numColors; FirstColor++) {
-      if (!fetched[FirstColor]) {
-         for (LastColor = FirstColor; LastColor < numColors && !fetched[LastColor]; LastColor++)
-             fetched[LastColor] = true;
-         LastColor--; // the loop ended one past the last one!
-         return &color[FirstColor];
-         }
-      }
-  return NULL;
-}
-
-void cPalette::Take(const cPalette &Palette, tIndexes *Indexes)
-{
-  for (int i = 0; i < Palette.numColors; i++) {
-      if (Palette.used[i]) {
-         int n = Index(Palette.color[i]);
-         if (Indexes)
-            (*Indexes)[i] = n;
-         }
-      }
-}
-
-// --- cBitmap ---------------------------------------------------------------
-
-cBitmap::cBitmap(int Width, int Height, int Bpp, bool ClearWithBackground)
-:cPalette(Bpp)
-{
-  width = Width;
-  height = Height;
-  clearWithBackground = ClearWithBackground;
-  bitmap = NULL;
-  fontType = fontOsd;
-  font = NULL;
-  if (width > 0 && height > 0) {
-     bitmap = new char[width * height];
-     if (bitmap) {
-        Clean();
-        memset(bitmap, 0x00, 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;
-}
-
-eDvbFont cBitmap::SetFont(eDvbFont Font)
-{
-  eDvbFont oldFont = fontType;
-  if (fontType != Font || !font) {
-     delete font;
-     font = new cFont(Font);
-     fontType = Font;
-     }
-  return oldFont;
-}
-
-bool cBitmap::Dirty(int &x1, int &y1, int &x2, int &y2)
-{
-  if (dirtyX2 >= 0) {
-     //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--;
-           }
-     //XXX "... / 2" <==> Bpp???
-     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--;
-           }
-     x1 = dirtyX1;
-     y1 = dirtyY1;
-     x2 = dirtyX2;
-     y2 = dirtyY2;
-     return true;
-     }
-  return false;
-}
-
-void cBitmap::Clean(void)
-{
-  dirtyX1 = width;
-  dirtyY1 = height;
-  dirtyX2 = -1;
-  dirtyY2 = -1;
-}
-
-void cBitmap::SetIndex(int x, int y, char Index)
-{
-  if (bitmap) {
-     if (0 <= x && x < width && 0 <= y && y < height) {
-        if (bitmap[width * y + x] != Index) {
-           bitmap[width * y + x] = Index;
-           if (dirtyX1 > x)  dirtyX1 = x;
-           if (dirtyY1 > y)  dirtyY1 = y;
-           if (dirtyX2 < x)  dirtyX2 = x;
-           if (dirtyY2 < y)  dirtyY2 = y;
-           }
-        }
-     }
-}
-
-void cBitmap::SetPixel(int x, int y, eDvbColor Color)
-{
-  SetIndex(x, y, Index(Color));
-}
-
-void cBitmap::SetBitmap(int x, int y, const cBitmap &Bitmap)
-{
-  if (bitmap && Bitmap.bitmap) {
-     tIndexes Indexes;
-     Take(Bitmap, &Indexes);
-     for (int ix = 0; ix < Bitmap.width; ix++) {
-         for (int iy = 0; iy < Bitmap.height; iy++)
-             SetIndex(x + ix, y + iy, Indexes[Bitmap.bitmap[Bitmap.width * iy + ix]]);
-         }
-     }
-}
-
-int cBitmap::Width(unsigned char c)
-{
-  return font ? font->Width(c) : -1;
-}
-
-int cBitmap::Width(const char *s)
-{
-  return font ? font->Width(s) : -1;
-}
-
-void cBitmap::Text(int x, int y, const char *s, eDvbColor ColorFg, eDvbColor ColorBg)
-{
-  if (bitmap) {
-     char fg = Index(ColorFg);
-     char bg = Index(ColorBg);
-     int h = font->Height(s);
-     while (s && *s) {
-           const cFont::tCharData *CharData = font->CharData(*s++);
-           if (int(x + CharData->width) > width)
-              break;
-           for (int row = 0; row < h; row++) {
-               cFont::tPixelData PixelData = CharData->lines[row];
-               for (int col = CharData->width; col-- > 0; ) {
-                   SetIndex(x + col, y + row, (PixelData & 1) ? fg : bg);
-                   PixelData >>= 1;
-                   }
-               }
-           x += CharData->width;
-           }
-     }
-}
-
-void cBitmap::Fill(int x1, int y1, int x2, int y2, eDvbColor Color)
-{
-  if (bitmap) {
-     char c = Index(Color);
-     for (int y = y1; y <= y2; y++)
-         for (int x = x1; x <= x2; x++)
-             SetIndex(x, y, c);
-     }
-}
-
-void cBitmap::Clear(void)
-{
-  Reset();
-  if (clearWithBackground)
-     Fill(0, 0, width - 1, height - 1, clrBackground);
-}
-
-const char *cBitmap::Data(int x, int y)
-{
-  return &bitmap[y * width + x];
-}
-
-// --- cWindow ---------------------------------------------------------------
-
-class cWindow : public cBitmap {
-private:
-  int handle;  // the index within the OSD's window array (0...MAXNUMWINDOWS - 1)
-  int x0, y0;
-  int bpp;
-  bool tiled;
-  bool shown;
-public:
-  cWindow(int Handle, int x, int y, int w, int h, int Bpp, bool ClearWithBackground, bool Tiled);
-  int X0(void) { return x0; }
-  int Y0(void) { return y0; }
-  int Bpp(void) { return bpp; }
-  bool Tiled(void) { return tiled; }
-  bool Shown(void) { bool s = shown; shown = true; return s; }
-  int Handle(void) { return handle; }
-  bool Contains(int x, int y);
-  void Relocate(int x, int y);
-  void Fill(int x1, int y1, int x2, int y2, eDvbColor Color);
-  void SetBitmap(int x, int y, const cBitmap &Bitmap);
-  void Text(int x, int y, const char *s, eDvbColor ColorFg = clrWhite, eDvbColor ColorBg = clrBackground);
-  const char *Data(int x, int y);
-  };
-
-cWindow::cWindow(int Handle, int x, int y, int w, int h, int Bpp, bool ClearWithBackground, bool Tiled)
-:cBitmap(w, h, Bpp, ClearWithBackground)
-{
-  handle = Handle;
-  x0 = x;
-  y0 = y;
-  bpp = Bpp;
-  tiled = Tiled;
-  shown = false;
-}
-
-bool cWindow::Contains(int x, int y)
-{
-  x -= x0;
-  y -= y0;
-  return x >= 0 && y >= 0 && x < width && y < height;
-}
-
-void cWindow::Relocate(int x, int y)
-{
-  x0 = x;
-  y0 = y;
-}
-
-void cWindow::Fill(int x1, int y1, int x2, int y2, eDvbColor Color)
-{
-  if (tiled) {
-     x1 -= x0;
-     y1 -= y0;
-     x2 -= x0;
-     y2 -= y0;
-     }
-  cBitmap::Fill(x1, y1, x2, y2, Color);
-}
-
-void cWindow::SetBitmap(int x, int y, const cBitmap &Bitmap)
-{
-  if (tiled) {
-     x -= x0;
-     y -= y0;
-     }
-  cBitmap::SetBitmap(x, y, Bitmap);
-}
-
-void cWindow::Text(int x, int y, const char *s, eDvbColor ColorFg, eDvbColor ColorBg)
-{
-  if (tiled) {
-     x -= x0;
-     y -= y0;
-     }
-  cBitmap::Text(x, y, s, ColorFg, ColorBg);
-}
-
-const char *cWindow::Data(int x, int y)
-{
-  return cBitmap::Data(x, y);
-}
-
-// --- cDvbOsd ---------------------------------------------------------------
-
-cDvbOsd::cDvbOsd(int VideoDev, int x, int y, int w, int h, int Bpp)
+cDvbOsd::cDvbOsd(int VideoDev, int x, int y)
+:cOsd(x, y)
 {
   videoDev = VideoDev;
-  numWindows = 0;
-  x0 = x;
-  y0 = y;
-  if (videoDev >= 0) {
-     if (w > 0 && h > 0)
-        Create(0, 0, w, h, Bpp);
-     }
-  else
+  if (videoDev < 0)
      esyslog(LOG_ERR, "ERROR: illegal video device handle (%d)!", videoDev);
 }
 
 cDvbOsd::~cDvbOsd()
 {
-  if (videoDev >= 0) {
-     for (int i = 0; i < numWindows; i++) {
-         SetWindow(window[i]);
-         Cmd(OSD_Close);
-         delete window[i];
-         }
-     numWindows = 0;
-     }
+  for (int i = 0; i < NumWindows(); i++)
+      CloseWindow(GetWindowNr(i));
 }
 
 bool cDvbOsd::SetWindow(cWindow *Window)
 {
-  // Window handles are counted 0...(MAXNUMWINDOWS - 1), but the actual window
-  // numbers in the driver are used from 1...MAXNUMWINDOWS.
-  int Handle = Window->Handle();
-  if (0 <= Handle && Handle < MAXNUMWINDOWS) {
-     Cmd(OSD_SetWindow, 0, Handle + 1);
-     return true;
+  if (Window) {
+     // Window handles are counted 0...(MAXNUMWINDOWS - 1), but the actual window
+     // numbers in the driver are used from 1...MAXNUMWINDOWS.
+     int Handle = Window->Handle();
+     if (0 <= Handle && Handle < MAXNUMWINDOWS) {
+        Cmd(OSD_SetWindow, 0, Handle + 1);
+        return true;
+        }
+     esyslog(LOG_ERR, "ERROR: illegal window handle: %d", Handle);
      }
-  esyslog(LOG_ERR, "ERROR: illegal window handle: %d", Handle);
-  return -1;
+  return false;
 }
 
 void cDvbOsd::Cmd(OSD_Command cmd, int color, int x0, int y0, int x1, int y1, const void *data)
@@ -406,166 +68,51 @@ void cDvbOsd::Cmd(OSD_Command cmd, int color, int x0, int y0, int x1, int y1, co
      }
 }
 
-tWindowHandle cDvbOsd::Create(int x, int y, int w, int h, int Bpp, bool ClearWithBackground, bool Tiled)
+bool cDvbOsd::OpenWindow(cWindow *Window)
 {
-  if (numWindows < MAXNUMWINDOWS) {
-     if (x >= 0 && y >= 0 && w > 0 && h > 0 && (Bpp == 1 || Bpp == 2 || Bpp == 4 || Bpp == 8)) {
-        if ((w & 0x03) != 0) {
-           w += 4 - (w & 0x03);
-           esyslog(LOG_ERR, "ERROR: OSD window width must be a multiple of 4 - increasing to %d", w);
-           }
-        cWindow *win = new cWindow(numWindows, x, y, w, h, Bpp, ClearWithBackground, Tiled);
-        if (SetWindow(win)) {
-           window[win->Handle()] = win;
-           Cmd(OSD_Open, Bpp, x0 + x, y0 + y, x0 + x + w - 1, y0 + y + h - 1, (void *)1); // initially hidden!
-           numWindows++;
-           return win->Handle();
-           }
-        else
-           delete win;
-        }
-     else
-        esyslog(LOG_ERR, "ERROR: illegal OSD parameters");
-     }
-  else
-     esyslog(LOG_ERR, "ERROR: too many OSD windows");
-  return -1;
-}
-
-void cDvbOsd::AddColor(eDvbColor Color, tWindowHandle Window)
-{
-  cWindow *w = GetWindow(Window);
-  if (w) {
-     w->Index(Color);
-     w->Reset();
+  if (SetWindow(Window)) {
+     Cmd(OSD_Open, Window->Bpp(), X0() + Window->X0(), Y0() + Window->Y0(), X0() + Window->X0() + Window->Width() - 1, Y0() + Window->Y0() + Window->Height() - 1, (void *)1); // initially hidden!
+     return true;
      }
+  return false;
 }
 
-cWindow *cDvbOsd::GetWindow(int x, int y)
-{
-  for (int i = 0; i < numWindows; i++) {
-      if (window[i]->Tiled() && window[i]->Contains(x, y))
-         return window[i];
-      }
-  return NULL;
-}
-
-cWindow *cDvbOsd::GetWindow(tWindowHandle Window)
-{
-  if (0 <= Window && Window < numWindows)
-     return window[Window];
-  if (Window == LAST_CREATED_WINDOW && numWindows > 0)
-     return window[numWindows - 1];
-  return NULL;
-}
-
-void cDvbOsd::Flush(void)
-{
-  for (int i = 0; i < numWindows; i++) {
-      int x1 = 0, y1 = 0, x2 = 0, y2 = 0;
-      if (window[i]->Dirty(x1, y1, x2, y2)) {
-         SetWindow(window[i]);
-         int FirstColor = 0, LastColor = 0;
-         const eDvbColor *pal;
-         while ((pal = window[i]->Colors(FirstColor, LastColor)) != NULL)
-               Cmd(OSD_SetPalette, FirstColor, LastColor, 0, 0, 0, pal);
-         Cmd(OSD_SetBlock, window[i]->Width(), x1, y1, x2, y2, window[i]->Data(x1, y1));
-         window[i]->Clean();
-         }
-      }
-  // Showing the windows in a separate loop to avoid seeing them come up one after another
-  for (int i = 0; i < numWindows; i++) {
-      if (!window[i]->Shown()) {
-         SetWindow(window[i]);
-         Cmd(OSD_MoveWindow, 0, x0 + window[i]->X0(), y0 + window[i]->Y0());
-         }
-      }
-}
-
-void cDvbOsd::Clear(tWindowHandle Window)
+void cDvbOsd::CommitWindow(cWindow *Window)
 {
-  if (Window == ALL_TILED_WINDOWS || Window == ALL_WINDOWS) {
-     for (int i = 0; i < numWindows; i++)
-         if (Window == ALL_WINDOWS || window[i]->Tiled())
-            window[i]->Clear();
-     }
-  else {
-     cWindow *w = GetWindow(Window);
-     if (w)
-        w->Clear();
+  if (SetWindow(Window)) {
+     int x1 = 0, y1 = 0, x2 = 0, y2 = 0;
+     if (Window->Dirty(x1, y1, x2, y2)) {
+        // commit colors:
+        int FirstColor = 0, LastColor = 0;
+        const eDvbColor *pal;
+        while ((pal = Window->Colors(FirstColor, LastColor)) != NULL)
+              Cmd(OSD_SetPalette, FirstColor, LastColor, 0, 0, 0, pal);
+        // commit modified data:
+        Cmd(OSD_SetBlock, Window->Width(), x1, y1, x2, y2, Window->Data(x1, y1));
+        }
      }
 }
 
-void cDvbOsd::Fill(int x1, int y1, int x2, int y2, eDvbColor Color, tWindowHandle Window)
+void cDvbOsd::ShowWindow(cWindow *Window)
 {
-  cWindow *w = (Window == ALL_TILED_WINDOWS) ? GetWindow(x1, y1) : GetWindow(Window);
-  if (w)
-     w->Fill(x1, y1, x2, y2, Color);
+  if (SetWindow(Window))
+     Cmd(OSD_MoveWindow, 0, X0() + Window->X0(), Y0() + Window->Y0());
 }
 
-void cDvbOsd::SetBitmap(int x, int y, const cBitmap &Bitmap, tWindowHandle Window)
+void cDvbOsd::HideWindow(cWindow *Window, bool Hide)
 {
-  cWindow *w = (Window == ALL_TILED_WINDOWS) ? GetWindow(x, y) : GetWindow(Window);
-  if (w)
-     w->SetBitmap(x, y, Bitmap);
+  if (SetWindow(Window))
+     Cmd(Hide ? OSD_Hide : OSD_Show, 0);
 }
 
-int cDvbOsd::Width(unsigned char c)
+void cDvbOsd::MoveWindow(cWindow *Window, int x, int y)
 {
-  return numWindows ? window[0]->Width(c) : 0;
+  if (SetWindow(Window))
+     Cmd(OSD_MoveWindow, 0, X0() + x, Y0() + y);
 }
 
-int cDvbOsd::Width(const char *s)
+void cDvbOsd::CloseWindow(cWindow *Window)
 {
-  return numWindows ? window[0]->Width(s) : 0;
+  if (SetWindow(Window))
+     Cmd(OSD_Close);
 }
-
-eDvbFont cDvbOsd::SetFont(eDvbFont Font)
-{
-  eDvbFont oldFont = Font;
-  for (int i = 0; i < numWindows; i++)
-      oldFont = window[i]->SetFont(Font);
-  return oldFont;
-}
-
-void cDvbOsd::Text(int x, int y, const char *s, eDvbColor ColorFg = clrWhite, eDvbColor ColorBg = clrBackground, tWindowHandle Window)
-{
-  cWindow *w = (Window == ALL_TILED_WINDOWS) ? GetWindow(x, y) : GetWindow(Window);
-  if (w)
-     w->Text(x, y, s, ColorFg, ColorBg);
-}
-
-void cDvbOsd::Relocate(tWindowHandle Window, int x, int y, int NewWidth, int NewHeight)
-{
-  cWindow *w = GetWindow(Window);
-  if (w) {
-     SetWindow(w);
-     if (NewWidth > 0 && NewHeight > 0) {
-        if ((NewWidth & 0x03) != 0) {
-           NewWidth += 4 - (NewWidth & 0x03);
-           esyslog(LOG_ERR, "ERROR: OSD window width must be a multiple of 4 - increasing to %d", NewWidth);
-           }
-        Cmd(OSD_Close);
-        window[w->Handle()] = new cWindow(w->Handle(), x, y, NewWidth, NewHeight, w->Bpp(), w->ClearWithBackground(), w->Tiled());
-        delete w;
-        Cmd(OSD_Open, 2, x0 + x, y0 + y, x0 + x + NewWidth - 1, y0 + y + NewHeight - 1, (void *)1); // initially hidden!
-        }
-     else {
-        w->Relocate(x, y);
-        Cmd(OSD_MoveWindow, 0, x0 + x, y0 + y);
-        }
-     }
-}
-
-void cDvbOsd::Hide(tWindowHandle Window)
-{
-  if (SetWindow(GetWindow(Window)))
-     Cmd(OSD_Hide, 0);
-}
-
-void cDvbOsd::Show(tWindowHandle Window)
-{
-  if (SetWindow(GetWindow(Window)))
-     Cmd(OSD_Show, 0);
-}
-