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
|
/**
\class CVideoDeviceTuner
\brief Tuner on V4L device
This class sets the frequency and norm on the TV or radio tuner on a
TV/radio card. The frequency is represented as a float number in Hz.
There are three basic TV systems on this planet: PAL, NTSC and SECAM.
There are also small variations in these systems, called <i>norms</i>.
There are norms like PAL-B, -D, -G, -H, -I, M, -N, -MC; NTSC has two
versions, `plain' NTSC (as used in the USA) and NTSC-Japan. SECAM seems
to have only one norm. In practice, these norms are all the same when
viewing a broadcast; as far as I know the main differences lie in the
assignment of the hidden line numbers to services like TeleText, Closed
Captioning, etc.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "VideoDeviceInput.h"
#include "VideoDeviceTuner.h"
#include "VideoDevice.h"
/**
\brief Constructor
\param _video Master VideoDevice object
\param _tuner Tuner number (should rarely be > 0)
*/
CVideoDeviceTuner::CVideoDeviceTuner(CVideoDevice *_video, int _tuner)
{
pVideo = _video;
Tuner = _tuner;
FreqLow = 0;
FreqHigh = 0;
FreqStep = 1;
Flags = 0;
}
const QString CVideoDeviceTuner::GetName()
{
return Name;
}
float CVideoDeviceTuner::GetLowestFrequency() const
{
return FreqLow;
}
float CVideoDeviceTuner::GetHighestFrequency() const
{
return FreqHigh;
}
/**
\brief Return frequency of tuner, in Hz
\return -1.0 in case of failure
*/
float CVideoDeviceTuner::GetFrequency() const
{
return -1.0;
}
/**
\brief Set frequency
\param freq Desired frequency, in Hz
\return FALSE if device refused the frequency or was not able to, TRUE with success
*/
bool CVideoDeviceTuner::SetFrequency(float freq)
{
return true;
}
/**
\brief Returns whether this input can have its norm set.
*/
bool CVideoDeviceTuner::HasNorm() const
{
return false;
}
void CVideoDeviceTuner::SetNorm(int norm)
{
if (norm < MAX)
Norm = norm;
}
int CVideoDeviceTuner::GetNorm() const
{
return Norm;
}
|
