Manual Pages for UNIX Operating System command usage for man mlib_VideoColorYUV2ABGR420_W

mediaLib Library Functions    mlib_VideoColorYUV2ABGR420_W(3MLIB)



NAME
     mlib_VideoColorYUV2ABGR420_W - YUV to RGB color conversion

SYNOPSIS
     cc [ flag... ] file... -lmlib [ library... ]
     #include 

     mlib_status mlib_VideoColorYUV2ABGR420_W(mlib_u8 *abgr, const mlib_u8 *y,
          const mlib_u8 *u, const mlib_u8 *v, mlib_s32 width, mlib_s32 height,
          mlib_s32 abgr_stride, mlib_s32 y_stride, mlib_s32 uv_stride,
          mlib_s32 left,mlib_s32 top, mlib_s32 right,
          mlib_s32 bottom);


DESCRIPTION
     The mlib_VideoColorYUV2ABGR420_W() function performs YUV  to
     RGB  color conversion used in MPEG1 and MPEG2 video compres-
     sion in the 4:2:0 sequence.  It  performs  color  conversion
     together with window clipping.


     The luminance component is stored in Y, the chrominance com-
     ponents are stored in U and V, respectively. The size of the
     chrominance image depends on the chroma format used  by  the
     sequence.  In  this sequence, the chrominance components are
     subsampled 2-to-1 in both the horizontal and vertical direc-
     tions in respect to the luminance component.

PARAMETERS
     The function takes the following arguments:

     abgr           Pointer to the destination packed ABGR image.
                    abgr must be 8-byte aligned.


     y              Pointer to the source Y component. y must  be
                    8-byte aligned.


     u              Pointer to the source U component. u must  be
                    4-byte aligned.


     v              Pointer to the source V component. v must  be
                    4-byte aligned.


     width          Width of the image. width must be a  multiple
                    of 8.






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mediaLib Library Functions    mlib_VideoColorYUV2ABGR420_W(3MLIB)



     height         Height of the image. height must be a  multi-
                    ple of 2.


     abgr_stride    Stride, in bytes, between  adjacent  rows  in
                    the  ABGR image. abgr_stride must be a multi-
                    ple of 8.


     y_stride       Stride, in bytes, between  adjacent  rows  in
                    the  Y  component  image.  y_stride must be a
                    multiple of 8.


     uv_stride      Stride, in bytes, between  adjacent  rows  in
                    the  U and V component images. uv_stride must
                    be a multiple of 8.


     left           Left border of clipping window. 0  <  left  <
                    right < width.


     top            Top border of clipping window. 0 < top < bot-
                    tom < height.


     right          Left border of clipping window. 0  <  left  <
                    right < width.


     bottom         Bottom border of clipping window. 0 <  top  <
                    bottom < height.


RETURN VALUES
     The function returns MLIB_SUCCESS if  successful.  Otherwise
     it returns MLIB_FAILURE.

ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:













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mediaLib Library Functions    mlib_VideoColorYUV2ABGR420_W(3MLIB)



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | MT-Level                    | MT-Safe                     |
    |_____________________________|_____________________________|


SEE ALSO
     mlib_VideoColorYUV2ABGR420_WX2(3MLIB),
     mlib_VideoColorYUV2ABGR420_WX3(3MLIB),
     mlib_VideoColorYUV2ABGR420_X2(3MLIB),
     mlib_VideoColorYUV2ABGR420_X3(3MLIB), attributes(5)









































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