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
|
/*
Only a sample!
*/
#include "config.h"
#ifdef USE_TV
#include <stdio.h>
#include "../libvo/img_format.h"
#include "tv.h"
/* information about this file */
static tvi_info_t info = {
"NULL-TV",
"dummy",
"alex",
NULL
};
/* private data's */
typedef struct {
int width;
int height;
} priv_t;
#include "tvi_def.h"
/* handler creator - entry point ! */
tvi_handle_t *tvi_init_dummy(char *device)
{
return(new_handle());
}
/* initialisation */
static int init(priv_t *priv)
{
priv->width = 320;
priv->height = 200;
return(1);
}
/* that's the real start, we'got the format parameters (checked with control) */
static int start(priv_t *priv)
{
return(1);
}
static int uninit(priv_t *priv)
{
return(1);
}
static int control(priv_t *priv, int cmd, void *arg)
{
switch(cmd)
{
case TVI_CONTROL_IS_VIDEO:
return(TVI_CONTROL_TRUE);
case TVI_CONTROL_VID_GET_FORMAT:
// *(int *)arg = IMGFMT_YV12;
*(int *)arg = IMGFMT_YV12;
return(TVI_CONTROL_TRUE);
case TVI_CONTROL_VID_SET_FORMAT:
{
// int req_fmt = *(int *)arg;
int req_fmt = *(int *)arg;
if (req_fmt != IMGFMT_YV12)
return(TVI_CONTROL_FALSE);
return(TVI_CONTROL_TRUE);
}
case TVI_CONTROL_VID_SET_WIDTH:
priv->width = *(int *)arg;
return(TVI_CONTROL_TRUE);
case TVI_CONTROL_VID_GET_WIDTH:
*(int *)arg = priv->width;
return(TVI_CONTROL_TRUE);
case TVI_CONTROL_VID_SET_HEIGHT:
priv->height = *(int *)arg;
return(TVI_CONTROL_TRUE);
case TVI_CONTROL_VID_GET_HEIGHT:
*(int *)arg = priv->height;
return(TVI_CONTROL_TRUE);
case TVI_CONTROL_VID_CHK_WIDTH:
case TVI_CONTROL_VID_CHK_HEIGHT:
return(TVI_CONTROL_TRUE);
case TVI_CONTROL_TUN_SET_NORM:
return(TVI_CONTROL_TRUE);
}
return(TVI_CONTROL_UNKNOWN);
}
#ifdef HAVE_TV_BSDBT848
static double grabimmediate_video_frame(priv_t *priv, char *buffer, int len)
{
memset(buffer, 0xCC, len);
return(1);
}
#endif
static double grab_video_frame(priv_t *priv, char *buffer, int len)
{
memset(buffer, 0x42, len);
return(1);
}
static int get_video_framesize(priv_t *priv)
{
/* YV12 */
return(priv->width*priv->height*12/8);
}
static double grab_audio_frame(priv_t *priv, char *buffer, int len)
{
memset(buffer, 0x42, len);
return(1);
}
static int get_audio_framesize(priv_t *priv)
{
return(1);
}
#endif /* USE_TV */
|
