File: dvbsdffosd.c

package info (click to toggle)
vdr-plugin-dvbsddevice 2.2.0-9
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, buster
  • size: 128 kB
  • sloc: ansic: 989; makefile: 42
file content (211 lines) | stat: -rw-r--r-- 6,909 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
/*
 * dvbsdffosd.c: Implementation of the DVB SD Full Featured On Screen Display
 *
 * See the README file for copyright information and how to reach the author.
 *
 * $Id: dvbsdffosd.c 4.0 2011/04/17 12:55:09 kls Exp $
 */

#include "dvbsdffosd.h"
#include <linux/dvb/osd.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <sys/unistd.h>
#include <vdr/tools.h>

// --- cDvbSdFfOsd -----------------------------------------------------------

#define MAXNUMWINDOWS 7 // OSD windows are counted 1...7
#define MAXOSDMEMORY  92000 // number of bytes available to the OSD (for unmodified DVB cards)

class cDvbSdFfOsd : public cOsd {
private:
  int osdDev;
  int osdMem;
  bool shown;
  void Cmd(OSD_Command cmd, int color = 0, int x0 = 0, int y0 = 0, int x1 = 0, int y1 = 0, const void *data = NULL);
protected:
  virtual void SetActive(bool On);
public:
  cDvbSdFfOsd(int Left, int Top, int OsdDev, uint Level);
  virtual ~cDvbSdFfOsd();
  virtual eOsdError CanHandleAreas(const tArea *Areas, int NumAreas);
  virtual eOsdError SetAreas(const tArea *Areas, int NumAreas);
  virtual void Flush(void);
  };

cDvbSdFfOsd::cDvbSdFfOsd(int Left, int Top, int OsdDev, uint Level)
:cOsd(Left, Top, Level)
{
  osdDev = OsdDev;
  shown = false;
  if (osdDev < 0)
     esyslog("ERROR: invalid OSD device handle (%d)!", osdDev);
  else {
     osdMem = MAXOSDMEMORY;
#ifdef OSD_CAP_MEMSIZE
     // modified DVB cards may have more OSD memory:
     osd_cap_t cap;
     cap.cmd = OSD_CAP_MEMSIZE;
     if (ioctl(osdDev, OSD_GET_CAPABILITY, &cap) == 0)
        osdMem = cap.val;
#endif
     }
}

cDvbSdFfOsd::~cDvbSdFfOsd()
{
  SetActive(false);
}

void cDvbSdFfOsd::SetActive(bool On)
{
  if (On != Active()) {
     cOsd::SetActive(On);
     if (On) {
        // must clear all windows here to avoid flashing effects - doesn't work if done
        // in Flush() only for the windows that are actually used...
        for (int i = 0; i < MAXNUMWINDOWS; i++) {
            Cmd(OSD_SetWindow, 0, i + 1);
            Cmd(OSD_Clear);
            }
        if (GetBitmap(0)) // only flush here if there are already bitmaps
           Flush();
        }
     else if (shown) {
        for (int i = 0; GetBitmap(i); i++) {
            Cmd(OSD_SetWindow, 0, i + 1);
            Cmd(OSD_Close);
            }
        shown = false;
        }
     }
}

eOsdError cDvbSdFfOsd::CanHandleAreas(const tArea *Areas, int NumAreas)
{
  eOsdError Result = cOsd::CanHandleAreas(Areas, NumAreas);
  if (Result == oeOk) {
     if (NumAreas > MAXNUMWINDOWS)
        return oeTooManyAreas;
     int TotalMemory = 0;
     for (int i = 0; i < NumAreas; i++) {
         if (Areas[i].bpp != 1 && Areas[i].bpp != 2 && Areas[i].bpp != 4 && Areas[i].bpp != 8)
            return oeBppNotSupported;
         if ((Areas[i].Width() & (8 / Areas[i].bpp - 1)) != 0)
            return oeWrongAlignment;
         if (Areas[i].Width() < 1 || Areas[i].Height() < 1 || Areas[i].Width() > 720 || Areas[i].Height() > 576)
            return oeWrongAreaSize;
         TotalMemory += Areas[i].Width() * Areas[i].Height() / (8 / Areas[i].bpp);
         }
     if (TotalMemory > osdMem)
        return oeOutOfMemory;
     }
  return Result;
}

eOsdError cDvbSdFfOsd::SetAreas(const tArea *Areas, int NumAreas)
{
  if (shown) {
     for (int i = 0; GetBitmap(i); i++) {
         Cmd(OSD_SetWindow, 0, i + 1);
         Cmd(OSD_Close);
         }
     shown = false;
     }
  return cOsd::SetAreas(Areas, NumAreas);
}

void cDvbSdFfOsd::Cmd(OSD_Command cmd, int color, int x0, int y0, int x1, int y1, const void *data)
{
  if (osdDev >= 0) {
     osd_cmd_t dc;
     dc.cmd   = cmd;
     dc.color = color;
     dc.x0    = x0;
     dc.y0    = y0;
     dc.x1    = x1;
     dc.y1    = y1;
     dc.data  = (void *)data;
     ioctl(osdDev, OSD_SEND_CMD, &dc);
     }
}

void cDvbSdFfOsd::Flush(void)
{
  if (!Active())
     return;
  cBitmap *Bitmap;
  for (int i = 0; (Bitmap = GetBitmap(i)) != NULL; i++) {
      Cmd(OSD_SetWindow, 0, i + 1);
      if (!shown)
         Cmd(OSD_Open, Bitmap->Bpp(), Left() + Bitmap->X0(), Top() + Bitmap->Y0(), Left() + Bitmap->X0() + Bitmap->Width() - 1, Top() + Bitmap->Y0() + Bitmap->Height() - 1, (void *)1); // initially hidden!
      int x1 = 0, y1 = 0, x2 = 0, y2 = 0;
      if (!shown || Bitmap->Dirty(x1, y1, x2, y2)) {
         if (!shown) {
            x1 = y1 = 0;
            x2 = Bitmap->Width() - 1;
            y2 = Bitmap->Height() - 1;
            }
         //TODO Workaround: apparently the bitmap sent to the driver always has to be a multiple
         //TODO 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 ((x1 > 0 || x2 < Bitmap->Width() - 1) && ((x2 - x1) & 7) != 7) {
               if (x2 < Bitmap->Width() - 1)
                  x2++;
               else if (x1 > 0)
                  x1--;
               }
         //TODO "... / 2" <==> Bpp???
         while ((y1 > 0 || y2 < Bitmap->Height() - 1) && (((x2 - x1 + 1) * (y2 - y1 + 1) / 2) & 7) != 0) {
               if (y2 < Bitmap->Height() - 1)
                  y2++;
               else if (y1 > 0)
                  y1--;
               }
         while ((x1 > 0 || x2 < Bitmap->Width() - 1) && (((x2 - x1 + 1) * (y2 - y1 + 1) / 2) & 7) != 0) {
               if (x2 < Bitmap->Width() - 1)
                  x2++;
               else if (x1 > 0)
                  x1--;
               }
         // commit colors:
         int NumColors;
         const tColor *Colors = Bitmap->Colors(NumColors);
         if (Colors) {
            //TODO this should be fixed in the driver!
            tColor colors[NumColors];
            for (int i = 0; i < NumColors; i++) {
                // convert AARRGGBB to AABBGGRR (the driver expects the colors the wrong way):
                colors[i] = (Colors[i] & 0xFF000000) | ((Colors[i] & 0x0000FF) << 16) | (Colors[i] & 0x00FF00) | ((Colors[i] & 0xFF0000) >> 16);
                }
            Colors = colors;
            //TODO end of stuff that should be fixed in the driver
            Cmd(OSD_SetPalette, 0, NumColors - 1, 0, 0, 0, Colors);
            }
         // commit modified data:
         Cmd(OSD_SetBlock, Bitmap->Width(), x1, y1, x2, y2, Bitmap->Data(x1, y1));
         }
      Bitmap->Clean();
      }
  if (!shown) {
     // Showing the windows in a separate loop to avoid seeing them come up one after another
     for (int i = 0; (Bitmap = GetBitmap(i)) != NULL; i++) {
         Cmd(OSD_SetWindow, 0, i + 1);
         Cmd(OSD_MoveWindow, 0, Left() + Bitmap->X0(), Top() + Bitmap->Y0());
         }
     shown = true;
     }
}

// --- cDvbOsdProvider -------------------------------------------------------

cDvbOsdProvider::cDvbOsdProvider(int OsdDev)
{
  osdDev = OsdDev;
}

cOsd *cDvbOsdProvider::CreateOsd(int Left, int Top, uint Level)
{
  return new cDvbSdFfOsd(Left, Top, osdDev, Level);
}