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UncompressedVideoFrame Class Reference

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#include <UncompressedVideoFrame.hpp>

Inheritance diagram for UncompressedVideoFrame:

VideoFrame Frame List of all members.

Public Types

typedef enum UncompressedVideoFrame::ColorSpace ColorSpace
 Colorspace enumeration of colorspaces available.
enum  ColorSpace {
  ColorSpaceDefault = 4, ColorSpaceRGB24 = 0, ColorSpaceYV12 = 1, ColorSpaceI420 = 4,
  ColorSpaceRGB32 = 1000, ColorSpaceRGB565, ColorSpaceGRAY8, ColorSpaceUNKNOWN
}
 Colorspace enumeration of colorspaces available. More...

Public Member Functions

 UncompressedVideoFrame (FrameType t, int width, int height)
 Constructor -----------.
virtual ~UncompressedVideoFrame ()
 Destructor ----------.
Frame::FrameType detectFrameType ()
 Determines the correctness of the buffer and extracts the frametype of the frame On any problem: FrameType ERROR_VOP is returned.
void setColorSpace (ColorSpace c)
ColorSpace getColorSpace ()
UncompressedVideoFrame * convertToColorSpace (ColorSpace cs)
int getYBuffer (u8 **buf)
 Returns the buffer with Y component of *YUVI420* of Uncompressed Video.
int getUBuffer (u8 **buf)
 Returns the buffer with U component of *YUVI420* of Uncompressed Video.
int getVBuffer (u8 **buf)
 Returns the buffer with V component of *YUVI420* of Uncompressed Video.
double computePSNRy (UncompressedVideoFrame *f)
 computePSNRy ------------
double computePSNRu (UncompressedVideoFrame *f)
 computePSNRu ------------
double computePSNRv (UncompressedVideoFrame *f)
 computePSNRv ------------
double computePSNR (UncompressedVideoFrame *f)
 computePSNR -----------
double getPSNR ()

Static Public Member Functions

Frame::FrameType detectFrameType (AU *accessUnit)
int mapColorSpaceToBitDepth (ColorSpace colorspace)

Protected Member Functions

double computePSNRwithOffset (UncompressedVideoFrame *f, long offset)

Protected Attributes

double psnr
ColorSpace colorSpace

Detailed Description

<class description="" goes="" here=""> <short description="">

Author:
Michael Kropfberger and Peter Schojer
Version:
Id
UncompressedVideoFrame.hpp,v 1.7 2006/06/22 13:31:17 mkropfbe Exp

Definition at line 61 of file UncompressedVideoFrame.hpp.

Member Typedef Documentation

typedef enum UncompressedVideoFrame::ColorSpace UncompressedVideoFrame::ColorSpace
 

Colorspace enumeration of colorspaces available.

This is an excerpt of the colorspaces available in XviD (xvid.h) and/or FFmpeg (avcodec.h). so those colorSpaces are also avail in MP4Decoder

  • ColorSpaceDefault: Default is set to YUV420P.
  • ColorSpaceYV12: YV12 format, U and V swapped here!
  • ColorSpaceI420: I420 format,
  • ColorSpaceRGB24: Standard RGB colorspace 24 bit, but 4 byte
  • ColorSpaceRGB32: RGB Colorspace with alpha channel, so 4 byte
  • ColorSpaceRGB565: RGB with 16 bit with 2 byte

Referenced by mapColorSpaceToBitDepth(), MP4Encoder::mapToFFMPEGColorspace(), MP4Decoder::mapToFFMPEGColorspace(), MP4Decoder::mapToXVIDColorspace(), MP4Decoder::MP4Decoder(), QLabelRenderer::QLabelRenderer(), SDLRenderer::SDLRenderer(), VideoRenderer::VideoRenderer(), DataChannel::visualizeCaching(), and X11Renderer::X11Renderer().

Member Enumeration Documentation

enum UncompressedVideoFrame::ColorSpace
 

Colorspace enumeration of colorspaces available.

This is an excerpt of the colorspaces available in XviD (xvid.h) and/or FFmpeg (avcodec.h). so those colorSpaces are also avail in MP4Decoder

  • ColorSpaceDefault: Default is set to YUV420P.
  • ColorSpaceYV12: YV12 format, U and V swapped here!
  • ColorSpaceI420: I420 format,
  • ColorSpaceRGB24: Standard RGB colorspace 24 bit, but 4 byte
  • ColorSpaceRGB32: RGB Colorspace with alpha channel, so 4 byte
  • ColorSpaceRGB565: RGB with 16 bit with 2 byte
Definition at line 88 of file UncompressedVideoFrame.hpp.
00088                                 {
00089                 ColorSpaceDefault = 4,
00090                 ColorSpaceRGB24 = 0, 
00091                 ColorSpaceYV12 = 1, 
00092                 ColorSpaceI420 = 4, 
00093                 ColorSpaceRGB32 = 1000,
00094                 ColorSpaceRGB565, // implemented in interface to FFMPEG only
00095                 ColorSpaceGRAY8,        // implemented in interface to FFMPEG only
00096                 ColorSpaceUNKNOWN
00097         } ColorSpace;

Member Function Documentation

int UncompressedVideoFrame::getUBuffer (  u8 **  buf  ) 
 

Returns the buffer with U component of *YUVI420* of Uncompressed Video.

Parameters:
buf - This is the buffer which will ultimately contain the Y component
Returns:
Size of the buffer
Definition at line 272 of file UncompressedVideoFrame.cpp.
00272                                                {
00273 
00274         assert((colorSpace == ColorSpaceI420) || (colorSpace == ColorSpaceYV12));
00275 
00276         if(accessUnit->payload && accessUnit->size > 0)
00277         {
00278                 *buf = accessUnit->payload + (width*height);
00279                 return width*height/4;
00280         }
00281         else
00282         {
00283                 *buf = NULL;
00284                 return -1;
00285         }
00286 }

int UncompressedVideoFrame::getVBuffer (  u8 **  buf  ) 
 

Returns the buffer with V component of *YUVI420* of Uncompressed Video.

Parameters:
buf - This is the buffer which will ultimately contain the Y component
Returns:
Size of the buffer
Definition at line 290 of file UncompressedVideoFrame.cpp.
00290                                                {
00291 
00292         assert((colorSpace == ColorSpaceI420) || (colorSpace == ColorSpaceYV12));
00293 
00294         if(accessUnit->payload && accessUnit->size > 0)
00295         {
00296                 *buf = accessUnit->payload + (width*height) + width*height/4;
00297                 return width*height/4;
00298         }
00299         else
00300         {
00301                 *buf = NULL;
00302                 return -1;
00303         }
00304 }

int UncompressedVideoFrame::getYBuffer (  u8 **  buf  ) 
 

Returns the buffer with Y component of *YUVI420* of Uncompressed Video.

Parameters:
buf - This is the buffer which will ultimately contain the Y component
Returns:
Size of the buffer
Definition at line 254 of file UncompressedVideoFrame.cpp.
00254                                                {
00255 
00256         assert((colorSpace == ColorSpaceI420) || (colorSpace == ColorSpaceYV12));
00257 
00258         if(accessUnit->payload && accessUnit->size > 0)
00259         {
00260                 *buf = accessUnit->payload;
00261                 return width*height;
00262         }
00263         else
00264         {
00265                 *buf = NULL;
00266                 return -1;
00267         }
00268 }

int UncompressedVideoFrame::mapColorSpaceToBitDepth (  ColorSpace  colorspace  )  [static]
 

Returns:
eg. for ColorSpaceGRAY8 the value 8, RGB32 and RGB24 will be 32, whereas RGB565 will be 16
Definition at line 111 of file UncompressedVideoFrame.cpp.

References ColorSpace.

Referenced by FrameRotate::adapt(), X11Renderer::open(), and SDLRenderer::open().

00111                                                                          {
00112         switch (colorspace) {
00113                 case ColorSpaceRGB32:
00114                         return 32;
00115                         break;
00116                 case ColorSpaceRGB24:
00117                         return 24;
00118                         break;
00119                 case ColorSpaceRGB565:
00120                         return 16;
00121                         break;
00122                 case ColorSpaceGRAY8:
00123                         return 8;
00124                         break;
00125                 case ColorSpaceYV12: // FIXME: not perfect, but 8 is well-used for adaptors/FrameRotate...
00126                 case ColorSpaceI420:
00127                         return 8;
00128                         break;
00129                 default:
00130                         dprintf_err("MP4Decoder::mapColorSpaceToBitDepth: Unknown colorspace\n");
00131                         exit(-1);
00132         }
00133 }

The documentation for this class was generated from the following files: