OpenCV  3.2.0-dev
Open Source Computer Vision
Classes | Enumerations | Functions

Classes

class  cv::cudacodec::EncoderCallBack
 Callbacks for CUDA video encoder. More...
 
struct  cv::cudacodec::EncoderParams
 Different parameters for CUDA video encoder. More...
 
struct  cv::cudacodec::FormatInfo
 Struct providing information about video file format. : More...
 
class  cv::cudacodec::RawVideoSource
 Interface for video demultiplexing. : More...
 
class  cv::cudacodec::VideoReader
 Video reader interface. More...
 
class  cv::cudacodec::VideoWriter
 Video writer interface. More...
 

Enumerations

enum  cv::cudacodec::ChromaFormat {
  cv::cudacodec::Monochrome = 0,
  cv::cudacodec::YUV420,
  cv::cudacodec::YUV422,
  cv::cudacodec::YUV444
}
 Chroma formats supported by cudacodec::VideoReader . More...
 
enum  cv::cudacodec::Codec {
  cv::cudacodec::MPEG1 = 0,
  cv::cudacodec::MPEG2,
  cv::cudacodec::MPEG4,
  cv::cudacodec::VC1,
  cv::cudacodec::H264,
  cv::cudacodec::JPEG,
  cv::cudacodec::H264_SVC,
  cv::cudacodec::H264_MVC,
  cv::cudacodec::Uncompressed_YUV420 = (('I'<<24)|('Y'<<16)|('U'<<8)|('V')),
  cv::cudacodec::Uncompressed_YV12 = (('Y'<<24)|('V'<<16)|('1'<<8)|('2')),
  cv::cudacodec::Uncompressed_NV12 = (('N'<<24)|('V'<<16)|('1'<<8)|('2')),
  cv::cudacodec::Uncompressed_YUYV = (('Y'<<24)|('U'<<16)|('Y'<<8)|('V')),
  cv::cudacodec::Uncompressed_UYVY = (('U'<<24)|('Y'<<16)|('V'<<8)|('Y'))
}
 Video codecs supported by cudacodec::VideoReader . More...
 
enum  cv::cudacodec::SurfaceFormat {
  cv::cudacodec::SF_UYVY = 0,
  cv::cudacodec::SF_YUY2,
  cv::cudacodec::SF_YV12,
  cv::cudacodec::SF_NV12,
  cv::cudacodec::SF_IYUV,
  cv::cudacodec::SF_BGR,
  cv::cudacodec::SF_GRAY = SF_BGR
}
 

Functions

Ptr< VideoReadercv::cudacodec::createVideoReader (const String &filename)
 Creates video reader. More...
 
Ptr< VideoReadercv::cudacodec::createVideoReader (const Ptr< RawVideoSource > &source)
 
Ptr< VideoWritercv::cudacodec::createVideoWriter (const String &fileName, Size frameSize, double fps, SurfaceFormat format=SF_BGR)
 Creates video writer. More...
 
Ptr< VideoWritercv::cudacodec::createVideoWriter (const String &fileName, Size frameSize, double fps, const EncoderParams &params, SurfaceFormat format=SF_BGR)
 
Ptr< VideoWritercv::cudacodec::createVideoWriter (const Ptr< EncoderCallBack > &encoderCallback, Size frameSize, double fps, SurfaceFormat format=SF_BGR)
 
Ptr< VideoWritercv::cudacodec::createVideoWriter (const Ptr< EncoderCallBack > &encoderCallback, Size frameSize, double fps, const EncoderParams &params, SurfaceFormat format=SF_BGR)
 

Detailed Description

Enumeration Type Documentation

§ ChromaFormat

Chroma formats supported by cudacodec::VideoReader .

Enumerator
Monochrome 
YUV420 
YUV422 
YUV444 

§ Codec

Video codecs supported by cudacodec::VideoReader .

Enumerator
MPEG1 
MPEG2 
MPEG4 
VC1 
H264 
JPEG 
H264_SVC 
H264_MVC 
Uncompressed_YUV420 

Y,U,V (4:2:0)

Uncompressed_YV12 

Y,V,U (4:2:0)

Uncompressed_NV12 

Y,UV (4:2:0)

Uncompressed_YUYV 

YUYV/YUY2 (4:2:2)

Uncompressed_UYVY 

UYVY (4:2:2)

§ SurfaceFormat

Enumerator
SF_UYVY 
SF_YUY2 
SF_YV12 
SF_NV12 
SF_IYUV 
SF_BGR 
SF_GRAY 

Function Documentation

§ createVideoReader() [1/2]

Ptr<VideoReader> cv::cudacodec::createVideoReader ( const String filename)

Creates video reader.

Parameters
filenameName of the input video file.

FFMPEG is used to read videos. User can implement own demultiplexing with cudacodec::RawVideoSource

§ createVideoReader() [2/2]

Ptr<VideoReader> cv::cudacodec::createVideoReader ( const Ptr< RawVideoSource > &  source)

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Parameters
sourceRAW video source implemented by user.

§ createVideoWriter() [1/4]

Ptr<VideoWriter> cv::cudacodec::createVideoWriter ( const String fileName,
Size  frameSize,
double  fps,
SurfaceFormat  format = SF_BGR 
)

Creates video writer.

Parameters
fileNameName of the output video file. Only AVI file format is supported.
frameSizeSize of the input video frames.
fpsFramerate of the created video stream.
formatSurface format of input frames ( SF_UYVY , SF_YUY2 , SF_YV12 , SF_NV12 , SF_IYUV , SF_BGR or SF_GRAY). BGR or gray frames will be converted to YV12 format before encoding, frames with other formats will be used as is.

The constructors initialize video writer. FFMPEG is used to write videos. User can implement own multiplexing with cudacodec::EncoderCallBack .

§ createVideoWriter() [2/4]

Ptr<VideoWriter> cv::cudacodec::createVideoWriter ( const String fileName,
Size  frameSize,
double  fps,
const EncoderParams params,
SurfaceFormat  format = SF_BGR 
)

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Parameters
fileNameName of the output video file. Only AVI file format is supported.
frameSizeSize of the input video frames.
fpsFramerate of the created video stream.
paramsEncoder parameters. See cudacodec::EncoderParams .
formatSurface format of input frames ( SF_UYVY , SF_YUY2 , SF_YV12 , SF_NV12 , SF_IYUV , SF_BGR or SF_GRAY). BGR or gray frames will be converted to YV12 format before encoding, frames with other formats will be used as is.

§ createVideoWriter() [3/4]

Ptr<VideoWriter> cv::cudacodec::createVideoWriter ( const Ptr< EncoderCallBack > &  encoderCallback,
Size  frameSize,
double  fps,
SurfaceFormat  format = SF_BGR 
)

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Parameters
encoderCallbackCallbacks for video encoder. See cudacodec::EncoderCallBack . Use it if you want to work with raw video stream.
frameSizeSize of the input video frames.
fpsFramerate of the created video stream.
formatSurface format of input frames ( SF_UYVY , SF_YUY2 , SF_YV12 , SF_NV12 , SF_IYUV , SF_BGR or SF_GRAY). BGR or gray frames will be converted to YV12 format before encoding, frames with other formats will be used as is.

§ createVideoWriter() [4/4]

Ptr<VideoWriter> cv::cudacodec::createVideoWriter ( const Ptr< EncoderCallBack > &  encoderCallback,
Size  frameSize,
double  fps,
const EncoderParams params,
SurfaceFormat  format = SF_BGR 
)

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Parameters
encoderCallbackCallbacks for video encoder. See cudacodec::EncoderCallBack . Use it if you want to work with raw video stream.
frameSizeSize of the input video frames.
fpsFramerate of the created video stream.
paramsEncoder parameters. See cudacodec::EncoderParams .
formatSurface format of input frames ( SF_UYVY , SF_YUY2 , SF_YV12 , SF_NV12 , SF_IYUV , SF_BGR or SF_GRAY). BGR or gray frames will be converted to YV12 format before encoding, frames with other formats will be used as is.