EyaVideoPreview Class Reference
Video preview class. More...
#include <eyasetuptab.h>
Public Slots | |
| void | slotStartCapture () |
| Function called by pressing the start capture button. | |
| void | slotStopCapture () |
| Function called by pressing the stop capture button (the same button as start capture). | |
Public Member Functions | |
| EyaVideoPreview (QWidget *parent=0, Qt::WindowFlags f=0) | |
| Constructor. | |
| ~EyaVideoPreview () | |
| Destructor. | |
| virtual void | paintEvent (QPaintEvent *e) |
| void | setVideoDevice (QString) |
| This function sets the camera device used as input. | |
Private Types | |
| enum | VIDEO_STATUS { NONE, OPEN_DEVICE, INIT_DEVICE, START_CAPTURE } |
Private Slots | |
| void | read_frame () |
| To get the acquired frame v4l2. | |
| void | read_frameV4L1 () |
| To get the acquired frame v4l1. | |
Private Member Functions | |
| int | xioctl (int, int, void *) |
| ioctl used by v4l2 | |
| bool | start_capturingV4L1 () |
| It starts v4l1 capture. | |
| bool | start_capturing () |
| It starts v4l2 capture. | |
| bool | stop_capturingV4L1 () |
| It stops v4l1 capture. | |
| bool | stop_capturing () |
| It stops v4l2 capture. | |
| bool | uninit_device () |
| Uninit v4l2 device. | |
| bool | uninit_deviceV4L1 () |
| Uninit v4l1 device. | |
| bool | init_mmap () |
| Memory mapping for v4l2 device. | |
| bool | init_device () |
| Init v4l2 device. | |
| bool | init_deviceV4L1 () |
| Init v4l1 device. | |
| bool | open_device () |
| bool | close_device () |
| void | process_image (const void *) |
| This functions converts the image from yuv to rgb format v4l2. | |
| void | process_imageV4L1 (const unsigned char *) |
| This functions converts the image from yuv to rgb format v4l1. | |
| bool | checkPixelFormat () |
| Check the current pixel format. | |
| bool | checkV4LVersion () |
| Search for the v4lx version. | |
| QRgb | yuv2rgb (int, int, int) |
| yuv to rgb conversion | |
| int | clamp (double) |
| This functions saturates the pixels values. | |
Private Attributes | |
| QString | deviceName |
| The name of the video device. | |
| QImage * | imageToShow |
| This is the frame to be shown. | |
| int | fd |
| unsigned int | n_buffers |
| int | read_video_width |
| int | read_video_height |
| struct buffer * | buffers |
| Frames buffer. | |
| QTimer * | refreshTimer |
| Timer to refresh the captured image. | |
| int | status |
| uint32_t | currentPixelFormat |
| This identifies the pixel format used. | |
| bool | isV4L1 |
| Flag to signal video4linux1. | |
| struct video_capability | capV4L1 |
| v4l1 video capabilities | |
| struct video_window | winV4L1 |
| struct video_picture | vpicV4L1 |
| unsigned char * | bufferV4L1 |
| int | bppV4L1 |
Static Private Attributes | |
| static uint32_t | supportedPixelFormat [NUM_FORMATS] |
| List of supported pixel formats. | |
Detailed Description
Video preview class.This class provides the access to the v4l2 and v4l cameras. The class open the device, starts the acquisition, stops the acquisition and close the device.
Member Enumeration Documentation
enum EyaVideoPreview::VIDEO_STATUS [private] |
Constructor & Destructor Documentation
| EyaVideoPreview::EyaVideoPreview | ( | QWidget * | parent = 0, |
|
| Qt::WindowFlags | f = 0 | |||
| ) |
Constructor.
Video preview.
| EyaVideoPreview::~EyaVideoPreview | ( | ) |
Destructor.
Member Function Documentation
| bool EyaVideoPreview::checkPixelFormat | ( | ) | [private] |
Check the current pixel format.
| bool EyaVideoPreview::checkV4LVersion | ( | ) | [private] |
Search for the v4lx version.
| int EyaVideoPreview::clamp | ( | double | x | ) | [inline, private] |
This functions saturates the pixels values.
| bool EyaVideoPreview::close_device | ( | ) | [private] |
| bool EyaVideoPreview::init_device | ( | ) | [private] |
Init v4l2 device.
| bool EyaVideoPreview::init_deviceV4L1 | ( | ) | [private] |
Init v4l1 device.
| bool EyaVideoPreview::init_mmap | ( | ) | [private] |
Memory mapping for v4l2 device.
| bool EyaVideoPreview::open_device | ( | ) | [private] |
| void EyaVideoPreview::paintEvent | ( | QPaintEvent * | e | ) | [virtual] |
| void EyaVideoPreview::process_image | ( | const void * | im | ) | [private] |
This functions converts the image from yuv to rgb format v4l2.
| void EyaVideoPreview::process_imageV4L1 | ( | const unsigned char * | buf | ) | [private] |
This functions converts the image from yuv to rgb format v4l1.
| void EyaVideoPreview::read_frame | ( | ) | [private, slot] |
To get the acquired frame v4l2.
| void EyaVideoPreview::read_frameV4L1 | ( | ) | [private, slot] |
To get the acquired frame v4l1.
| void EyaVideoPreview::setVideoDevice | ( | QString | dev | ) |
This function sets the camera device used as input.
| void EyaVideoPreview::slotStartCapture | ( | ) | [slot] |
Function called by pressing the start capture button.
| void EyaVideoPreview::slotStopCapture | ( | ) | [slot] |
Function called by pressing the stop capture button (the same button as start capture).
| bool EyaVideoPreview::start_capturing | ( | ) | [private] |
It starts v4l2 capture.
| bool EyaVideoPreview::start_capturingV4L1 | ( | ) | [private] |
It starts v4l1 capture.
| bool EyaVideoPreview::stop_capturing | ( | ) | [private] |
It stops v4l2 capture.
| bool EyaVideoPreview::stop_capturingV4L1 | ( | ) | [private] |
It stops v4l1 capture.
| bool EyaVideoPreview::uninit_device | ( | ) | [private] |
Uninit v4l2 device.
| bool EyaVideoPreview::uninit_deviceV4L1 | ( | ) | [private] |
Uninit v4l1 device.
| int EyaVideoPreview::xioctl | ( | int | fd, | |
| int | request, | |||
| void * | arg | |||
| ) | [private] |
ioctl used by v4l2
| QRgb EyaVideoPreview::yuv2rgb | ( | int | Y1, | |
| int | Cb, | |||
| int | Cr | |||
| ) | [inline, private] |
yuv to rgb conversion
Member Data Documentation
int EyaVideoPreview::bppV4L1 [private] |
struct buffer* EyaVideoPreview::buffers [read, private] |
Frames buffer.
unsigned char* EyaVideoPreview::bufferV4L1 [private] |
struct video_capability EyaVideoPreview::capV4L1 [read, private] |
v4l1 video capabilities
uint32_t EyaVideoPreview::currentPixelFormat [private] |
This identifies the pixel format used.
QString EyaVideoPreview::deviceName [private] |
The name of the video device.
int EyaVideoPreview::fd [private] |
QImage* EyaVideoPreview::imageToShow [private] |
This is the frame to be shown.
bool EyaVideoPreview::isV4L1 [private] |
Flag to signal video4linux1.
unsigned int EyaVideoPreview::n_buffers [private] |
int EyaVideoPreview::read_video_height [private] |
int EyaVideoPreview::read_video_width [private] |
QTimer* EyaVideoPreview::refreshTimer [private] |
Timer to refresh the captured image.
int EyaVideoPreview::status [private] |
uint32_t EyaVideoPreview::supportedPixelFormat [static, private] |
Initial value:
{ V4L2_PIX_FMT_YUV420,
V4L2_PIX_FMT_YUYV,
V4L2_PIX_FMT_YUV422P }
struct video_picture EyaVideoPreview::vpicV4L1 [read, private] |
struct video_window EyaVideoPreview::winV4L1 [read, private] |
The documentation for this class was generated from the following files:
