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
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
/***************************************************************************
* *
* display.c - Actual implementation of OSD display variants and *
* Display:: namespace that encapsulates a single cDisplay. *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* Changelog: *
* 2005-03 initial version (c) Udo Richter *
* *
***************************************************************************/
#include <strings.h>
#include <vdr/config.h>
#include "setup.h"
#include "display.h"
#include "txtfont.h"
// Static variables of Display:: namespace
Display::Mode Display::mode=Display::Full;
cDisplay *Display::display=NULL;
void Display::SetMode(Display::Mode NewMode) {
// (re-)set display mode.
if (display!=NULL && NewMode==mode) return;
// No change, nothing to do
// OSD origin, centered on VDR OSD
int x0=Setup.OSDLeft+(Setup.OSDWidth-ttSetup.OSDwidth)*ttSetup.OSDHAlign/100;
int y0=Setup.OSDTop +(Setup.OSDHeight-ttSetup.OSDheight)*ttSetup.OSDVAlign/100;
switch (NewMode) {
case Display::Full:
// Need to re-initialize *display:
Delete();
// Try 4BPP display first:
display=new cDisplay4BPP(x0,y0,ttSetup.OSDwidth,ttSetup.OSDheight);
if (!display->Valid()) {
// Failed, possibly out of memory
delete display;
// Try 2BPP display
display=new cDisplay2BPP(x0,y0,ttSetup.OSDwidth,ttSetup.OSDheight);
}
break;
case Display::HalfUpper:
// Shortcut to switch from HalfUpper to HalfLower:
if (mode==Display::HalfLower) {
// keep instance.
((cDisplay4BPPHalf*)display)->SetUpper(true);
break;
}
// Need to re-initialize *display:
Delete();
display=new cDisplay4BPPHalf(x0,y0,ttSetup.OSDwidth,ttSetup.OSDheight,true);
break;
case Display::HalfLower:
// Shortcut to switch from HalfUpper to HalfLower:
if (mode==Display::HalfUpper) {
// keep instance.
((cDisplay4BPPHalf*)display)->SetUpper(false);
break;
}
// Need to re-initialize *display:
Delete();
display=new cDisplay4BPPHalf(x0,y0,ttSetup.OSDwidth,ttSetup.OSDheight,false);
break;
}
mode=NewMode;
// If display is invalid, clean up immediately:
if (!display->Valid()) Delete();
// Pass through OSD black transparency
SetBackgroundColor((tColor)ttSetup.configuredClrBackground);
}
void Display::ShowUpperHalf() {
// Enforce upper half of screen to be visible
if (GetZoom()==cDisplay::Zoom_Lower)
SetZoom(cDisplay::Zoom_Upper);
if (mode==HalfLower)
SetMode(HalfUpper);
}
cDisplay2BPP::cDisplay2BPP(int x0, int y0, int width, int height)
: cDisplay(width,height) {
// 2BPP display with color mapping
osd = cOsdProvider::NewOsd(x0, y0);
if (!osd) return;
width=(width+3)&~3;
// Width has to end on byte boundary, so round up
tArea Areas[] = { { 0, 0, width - 1, height - 1, 2 } };
if (osd->CanHandleAreas(Areas, sizeof(Areas) / sizeof(tArea)) != oeOk) {
DELETENULL(osd);
return;
}
osd->SetAreas(Areas, sizeof(Areas) / sizeof(tArea));
InitPalette();
InitScaler();
CleanDisplay();
}
tColor cDisplay2BPP::GetColorRGB(enumTeletextColor ttc, int Area) {
switch (ttc) {
case ttcBlack: return Background;
case ttcRed: return clrRed;
case ttcGreen: return clrYellow;
case ttcYellow: return clrYellow;
case ttcBlue: return Background;
case ttcMagenta: return clrRed;
case ttcCyan: return clrCyan;
case ttcWhite: return clrCyan;
case ttcTransparent: return Background;
default: return Background;
}
}
tColor cDisplay2BPP::GetColorRGBAlternate(enumTeletextColor ttc, int Area) {
switch (ttc) {
case ttcBlack: return clrCyan;
case ttcRed: return clrYellow;
case ttcGreen: return clrRed;
case ttcYellow: return clrRed;
case ttcBlue: return clrCyan;
case ttcMagenta: return clrYellow;
case ttcCyan: return Background;
case ttcWhite: return Background;
case ttcTransparent: return clrCyan;
default: return Background;
}
}
cDisplay4BPP::cDisplay4BPP(int x0, int y0, int width, int height)
: cDisplay(width,height) {
// 4BPP display for memory-modded DVB cards and other OSD providers
osd = cOsdProvider::NewOsd(x0, y0);
if (!osd) return;
width=(width+1)&~1;
// Width has to end on byte boundary, so round up
tArea Areas[] = { { 0, 0, width - 1, height - 1, 4 } };
if (osd->CanHandleAreas(Areas, sizeof(Areas) / sizeof(tArea)) != oeOk) {
DELETENULL(osd);
return;
}
osd->SetAreas(Areas, sizeof(Areas) / sizeof(tArea));
InitPalette();
InitScaler();
CleanDisplay();
}
cDisplay4BPPHalf::cDisplay4BPPHalf(int x0, int y0, int width, int height, bool upper)
: cDisplay(width,height), Upper(upper), OsdX0(x0), OsdY0(y0)
{
osd=NULL;
// Redirect all real init work to method
InitOSD();
}
void cDisplay4BPPHalf::InitOSD() {
if (osd) delete osd;
osd = cOsdProvider::NewOsd(OsdX0, OsdY0);
if (!osd) return;
int width=(Width+1)&~1;
// Width has to end on byte boundary, so round up
tArea Areas[] = { { 0, 0, width - 1, Height - 1, 4 } };
// Try full-size area first
while (osd->CanHandleAreas(Areas, sizeof(Areas) / sizeof(tArea)) != oeOk) {
// Out of memory, so shrink
if (Upper) {
// Move up lower border
Areas[0].y2=Areas[0].y2-1;
} else {
// Move down upper border
Areas[0].y1=Areas[0].y1+1;
}
if (Areas[0].y1>Areas[0].y2) {
// Area is empty, fail miserably
DELETENULL(osd);
return;
}
}
// Add some backup
// CanHandleAreas is not accurate enough
if (Upper) {
Areas[0].y2=Areas[0].y2-10;
} else {
Areas[0].y1=Areas[0].y1+10;
}
osd->SetAreas(Areas, sizeof(Areas) / sizeof(tArea));
InitPalette();
InitScaler();
CleanDisplay();
// In case we switched on the fly, do a full redraw
Dirty=true;
DirtyAll=true;
Flush();
}
|
