ofGstVideoGrabberfile

ofGstFrameratestruct

Attributes

numerator variable

int numerator

denominator variable

int denominator

ofGstVideoFormatstruct

Attributes

mimetype variable

string mimetype

format_name variable

string format_name

width variable

int width

height variable

int height

framerates variable

ofGstFramerate framerates

choosen_framerate variable

ofGstFramerate choosen_framerate

ofGstDevicestruct

Attributes

video_device variable

string video_device

gstreamer_src variable

string gstreamer_src

product_name variable

string product_name

video_formats variable

ofGstVideoFormat video_formats

current_format variable

int current_format

ofGstCamDatastruct

Attributes

webcam_devices variable

ofGstDevice webcam_devices

bInited variable

bool bInited

ofGstVideoGrabberclass

Functions

ofGstVideoGrabber ()

ofGstVideoGrabber()

~ofGstVideoGrabber ()

~ofGstVideoGrabber()

setPixelFormat ()

bool setPixelFormat(ofPixelFormat pixelFormat)

needs to be called before initGrabber

Implements ofBaseVideo.

getPixelFormat ()

ofPixelFormat getPixelFormat() const

Returns: the current ofPixelFormat.

Implements ofBaseVideo.

videoSettings ()

void videoSettings()

Request a native GUI for video grabber settings.

Note: This feature may not be implemented by all video grabbers.

Reimplemented from ofBaseVideoGrabber.

listDevices ()

ofVideoDevice listDevices() const

Get a list of available video grabber devices.

Returns: a std::vector of ofVideoDevice objects.

Implements ofBaseVideoGrabber.

setDeviceID ()

void setDeviceID(int id)

Set the video grabber's device ID.

In most cases, a user can choose a specific grabber source by ID. This device ID information should be available to the user via the listDevices() method.

Parameters

deviceID The device ID provided by listDevices().

Reimplemented from ofBaseVideoGrabber.

setDesiredFrameRate ()

void setDesiredFrameRate(int framerate)

Set the video grabber's desired frame rate.

Many video grabbers support user-specified frame rates. This frame rate should be considered a hint for the video grabber and is not guaranteed.

Parameters

framerate the desired frame rate.

Reimplemented from ofBaseVideoGrabber.

setup ()

bool setup(int w, int h)

Set up the grabber with the requested width and height.

Some video grabbers may take the requested width and height as a hint and choose the closest dimensions to those requested. Users can check the actual width and height by calling getWidth() and getHeight() respectively after a successful setup.

Parameters

w	the requested width.
h	the requested height.

Returns: true if the video grabber was set up successfully.

Implements ofBaseVideoGrabber.

update ()

void update()

Update the object's state.

Implements ofBaseUpdates.

isFrameNew ()

bool isFrameNew() const

Returns: true if the pixel data was updated since the last call to update().

Implements ofBaseVideo.

getPixels ()

ofPixels getPixels()

Get a reference to the underlying ofPixels.

Returns: a reference the underlying ofPixels.

Implements ofBaseHasPixels_< T >.

ofPixels getPixels() const

Get a const reference to the underlying ofPixels.

Returns: a const reference the underlying ofPixels.

Implements ofBaseHasPixels_< T >.

getHeight ()

float getHeight() const

Get the video grabber's height.

Returns: the video grabber's height.

Implements ofBaseVideoGrabber.

getWidth ()

float getWidth() const

Get the video grabber's width.

Returns: the video grabber's width.

Implements ofBaseVideoGrabber.

close ()

void close()

Close the video source.

Implements ofBaseVideo.

setVerbose ()

void setVerbose(bool bVerbose)

Set the video grabber's hardware verbosity level.

Parameters

bTalkToMe true if verbose grabber logging feedback is required.

Reimplemented from ofBaseVideoGrabber.

isInitialized ()

bool isInitialized() const

Determine if the video source is initialized.

Video sources such as cameras are often initialized with a setup() method. Video sources such as movie players are often initialized with a load() method.

Returns: true if the video source is initialized.

Implements ofBaseVideo.

getGstVideoUtils ()

ofGstVideoUtils getGstVideoUtils()

getTexturePtr ()

ofTexture getTexturePtr()

Get the video grabber's internal ofTexture pointer if available.

Note: Subclasses should implement this method only if internal API can upload video grabber pixels directly to an ofTexture.

Returns: the internal ofTexture pointer or NULL if not available.