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
|
/*
********************************************************************************
* USB UVC Driver
*
* (c) Copyright 2010-2015, All winners Co,Ld.
* All Right Reserved
*
* FileName : usbWebcam.h
*
* Author : Kingvan.Tong
*
* Date : 2013.05.17
*
* Description : USB Webcam
*
* Others : NULL
*
* History:
* <time> <version > <author> <desc>
* 2013.05.17 1.0 Kingvan.Tong build this file
*
********************************************************************************
*/
#include <string.h>
//#include "usb_host_config.h"
//#include "usb_host_base_types.h"
#include "usb_os_platform.h"
#include "error.h"
//#include "misc_lib.h"
#include "video.h"
#include "uvcvideo.h"
#include "usbWebcam.h"
#include "usbWebcam_proc.h"
#include "hal_log.h"
static struct uvc_fh *v4l2_handle = NULL;
extern struct uvc_fh * uvc_v4l2_open(struct uvc_streaming *stream);
extern __s32 uvc_v4l2_release(struct uvc_fh *handle);
extern __s32 uvc_v4l2_do_ioctl(struct uvc_fh *handle, unsigned int cmd, void *arg);
__s32 usbWebcam_v4l2_init(UVCDev_t *UVCDev)
{
if( UVCDev->streams == NULL )
{
hal_log_err("usbWebcam_v4l2_init() fail\n");
return -1;
}
if( v4l2_handle != NULL )
{
hal_log_err("usbWebcam_v4l2_init() v4l2_handle != NULL\n");
return -1;
}
//1.打开设备文件
v4l2_handle = uvc_v4l2_open(UVCDev->streams);
hal_log_info("usbWebcam_v4l2_init()\n");
if( v4l2_handle == NULL )
return -1;
else
return 0;
}
__s32 usbWebcam_v4l2_exit(UVCDev_t *UVCDev)
{
if( v4l2_handle == NULL )
{
hal_log_err("usbWebcam_v4l2_exit(), v4l2_handle == NULL\n");
return -1;
}
uvc_v4l2_release(v4l2_handle);
v4l2_handle = NULL;
hal_log_info("usbWebcam_v4l2_exit()\n");
return 0;
}
__s32 usbWebcam_v4l2_capture_on(UVCDev_t *UVCDev)
{
usbWebcam_t *usbWebcam = NULL;
struct v4l2_format fmt;
if( v4l2_handle == NULL )
{
hal_log_err("usbWebcam_v4l2_capture_on(), v4l2_handle == NULL\n");
return -1;
}
usbWebcam = (usbWebcam_t *)UVCDev->Extern;
memset( &fmt, 0, sizeof(fmt) );
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
fmt.fmt.pix.width = 1280;
fmt.fmt.pix.height = 720;
fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_MJPEG; //V4L2_PIX_FMT_MJPEG; V4L2_PIX_FMT_YUYV;
fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
if(uvc_v4l2_do_ioctl(v4l2_handle, VIDIOC_S_FMT, &fmt) == -1)
{
hal_log_err("usbWebcam_v4l2_capture_on() set format fail\n");
return-1;
}
hal_log_info("usbWebcam_v4l2_capture_on() type=%d\n", UVCDev->streams->type);
return uvc_v4l2_do_ioctl(v4l2_handle, VIDIOC_STREAMON, (void*)UVCDev->streams->type);
}
__s32 usbWebcam_v4l2_capture_off(UVCDev_t *UVCDev)
{
if( v4l2_handle == NULL )
{
hal_log_err("usbWebcam_v4l2_capture_off(), v4l2_handle == NULL\n");
return -1;
}
hal_log_info("usbWebcam_v4l2_capture_on() type=%d\n", UVCDev->streams->type);
return uvc_v4l2_do_ioctl(v4l2_handle, VIDIOC_STREAMOFF, (void*)UVCDev->streams->type);
}
|
