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
|
/*
* 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 1.24 2004/07/18 13:51:42 kls Exp $
*/
#include "dvbosd.h"
#include <linux/dvb/osd.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <sys/unistd.h>
#include "dvbdevice.h"
#include "tools.h"
// --- cDvbOsd ---------------------------------------------------------------
#define MAXNUMWINDOWS 7 // OSD windows are counted 1...7
#define MAXOSDMEMORY 92000 // number of bytes available to the OSD (depends on firmware version, but there is no way of determining the actual value)
class cDvbOsd : public cOsd {
private:
int osdDev;
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);
public:
cDvbOsd(int Left, int Top, int OsdDev);
virtual ~cDvbOsd();
virtual eOsdError CanHandleAreas(const tArea *Areas, int NumAreas);
virtual void Flush(void);
};
cDvbOsd::cDvbOsd(int Left, int Top, int OsdDev)
:cOsd(Left, Top)
{
osdDev = OsdDev;
shown = false;
if (osdDev < 0)
esyslog("ERROR: illegal OSD device handle (%d)!", osdDev);
else {
// 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);
}
}
}
cDvbOsd::~cDvbOsd()
{
if (shown) {
cBitmap *Bitmap;
for (int i = 0; (Bitmap = GetBitmap(i)) != NULL; i++) {
Cmd(OSD_SetWindow, 0, i + 1);
Cmd(OSD_Close);
}
}
}
eOsdError cDvbOsd::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;
TotalMemory += Areas[i].Width() * Areas[i].Height() / (8 / Areas[i].bpp);
}
if (TotalMemory > MAXOSDMEMORY)
return oeOutOfMemory;
}
return Result;
}
void cDvbOsd::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 cDvbOsd::Flush(void)
{
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 (Bitmap->Dirty(x1, y1, x2, y2)) {
//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);
#if __BYTE_ORDER == __BIG_ENDIAN
// actually the driver itself should access the bytes according to the current endianness!
colors[i] = ((colors[i] & 0xFF) << 24) | ((colors[i] & 0xFF00) << 8) | ((colors[i] & 0xFF0000) >> 8) | ((colors[i] & 0xFF000000) >> 24);
#endif
}
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)
{
return new cDvbOsd(Left, Top, osdDev);
}
|
