#include <mrpt/hwdrivers/CFFMPEG_InputStream.h>
Public Member Functions | |
CFFMPEG_InputStream () | |
Default constructor, does not open any video source at startup. | |
virtual | ~CFFMPEG_InputStream () |
Destructor. | |
bool | openURL (const std::string &url, bool grab_as_grayscale=false, bool verbose=false) |
Open a video file or a video stream (rtsp://) This can be used to open local video files (eg. | |
bool | isOpen () const |
Return whether the video source was open correctly. | |
void | close () |
Close the video stream (this is called automatically at destruction). | |
double | getVideoFPS () const |
Get the frame-per-second (FPS) of the video source, or "-1" if the video is not open. | |
bool | retrieveFrame (mrpt::utils::CImage &out_img) |
Get the next frame from the video stream. | |
Private Attributes | |
mrpt::utils::void_ptr_noncopy | m_state |
The internal ffmpeg state. | |
std::string | m_url |
The open URL. | |
bool | m_grab_as_grayscale |
Video sources can be open with "openURL", which can manage both video files and "rtsp://" sources (IP cameras).
Frames are retrieved by calling CFFMPEG_InputStream::retrieveFrame
For an example of usage, see the file "samples/grab_camera_ffmpeg"
Definition at line 55 of file CFFMPEG_InputStream.h.
mrpt::hwdrivers::CFFMPEG_InputStream::CFFMPEG_InputStream | ( | ) |
Default constructor, does not open any video source at startup.
virtual mrpt::hwdrivers::CFFMPEG_InputStream::~CFFMPEG_InputStream | ( | ) | [virtual] |
Destructor.
void mrpt::hwdrivers::CFFMPEG_InputStream::close | ( | ) |
double mrpt::hwdrivers::CFFMPEG_InputStream::getVideoFPS | ( | ) | const |
Get the frame-per-second (FPS) of the video source, or "-1" if the video is not open.
bool mrpt::hwdrivers::CFFMPEG_InputStream::isOpen | ( | ) | const |
Return whether the video source was open correctly.
bool mrpt::hwdrivers::CFFMPEG_InputStream::openURL | ( | const std::string & | url, | |
bool | grab_as_grayscale = false , |
|||
bool | verbose = false | |||
) |
Open a video file or a video stream (rtsp://) This can be used to open local video files (eg.
"myVideo.avi", "c:\a.mpeg") and also IP cameras (e. "rtsp://a.b.c.d/live.sdp"). However, note that there is currently no support for user/password in IP access. If verbose is set to true, more information about the video will be dumped to cout.
bool mrpt::hwdrivers::CFFMPEG_InputStream::retrieveFrame | ( | mrpt::utils::CImage & | out_img | ) |
Get the next frame from the video stream.
Note that for remote streams (IP cameras) this method may block until enough information is read to generate a new frame. Images are returned as 8-bit depth grayscale if "grab_as_grayscale" is true.
bool mrpt::hwdrivers::CFFMPEG_InputStream::m_grab_as_grayscale [private] |
Definition at line 60 of file CFFMPEG_InputStream.h.
std::string mrpt::hwdrivers::CFFMPEG_InputStream::m_url [private] |
Page generated by Doxygen 1.5.7.1 for MRPT 0.7.1 SVN: at Mon Aug 17 23:02:22 EDT 2009 |