Evo::Picture Class Reference

Picture class More...

#include <Picture.hpp>

Public Member Functions
virtual const EvoImage &	GetImage (void)=0
virtual int64_t	GetTime (EvoTimeUnit unit=EVOTU_MS) const =0
virtual EvoRC	SaveInJPEG (const char *path, int quality=95)=0
virtual EvoRC	SaveInPNG (const char *path, int compression=1)=0

Detailed Description

This class represents the captured image and several related information.

Member Function Documentation

GetImage()

virtual const EvoImage & Evo::Picture::GetImage ( void )

pure virtual

Get image data of the picture.

Returns

Image data.

GetTime()

virtual int64_t Evo::Picture::GetTime ( EvoTimeUnit unit = EVOTU_MS ) const

pure virtual

Get time stamp when captured.

Parameters

[in]

unit

Precision of the time stamp.

Returns

Time Stamp

Note

Because the time stamp is represented as Unix's Epoch Time, for local time must be converted as below

time_t timeRaw;
int64_t timeMS;
struct tm *timeInfo = NULL;
int64_t timeUTC = pic->GetTime(EVOTU_MS);

timeMS = timeUTC % 1000;
timeRaw = time_t(timeUTC / 1000);
timeInfo = localtime(&timeRaw);

cout << timeInfo->tm_year + 1900 << '-'
     << timeInfo->tm_mon + 1 << '-'
     << timeInfo->tm_mday << ' '
     << timeInfo->tm_hour << ':'
     << timeInfo->tm_min << ':'
     << timeInfo->tm_sec << '.'
     << timeMS << endl;

SaveInJPEG()

virtual EvoRC Evo::Picture::SaveInJPEG ( const char * path, int quality = 95 )

pure virtual

Create JPEG file of the picture.

Parameters

[in]	path	Path to JPEG file which must have either of the extensions '.jpg' or '.jpeg'.
[in]	quality	Quality level of compressed picture, which has the range [1, 100].

Returns

EvoRC code

SaveInPNG()

virtual EvoRC Evo::Picture::SaveInPNG ( const char * path, int compression = 1 )

pure virtual

Create PNG file of the picture.

Parameters

[in]	path	Path to PNG file which must have the extension '.png'.
[in]	compression	Compression level, which has the range [0, 9].

Returns

EvoRC code