cc [ flag... ] file... –lmlib [ library... ] #include <mlib.h> void mlib_VideoColorYUV420seq_to_ABGRint(mlib_u32 *ABGR, const mlib_u8 *Y,const mlib_u8 *U, const mlib_u8 *V, const mlib_u8 *A_array,mlib_u8 A_const, mlib_s32 w, mlib_s32 h, mlib_s32 dlb,mlib_s32 yalb, mlib_s32 uvlb);
The Y, U, V pixel streams are converted into an ABGR pixel stream. All pixel components are 8-bit unsigned integers. The Y buffer has dimensions w and h. The U and V buffers have dimensions w/2 and h/2. Dimensions w and h are assumed to be even. Successive rows of the output buffer ABGR use successive rows of Y and the same rows of U and V.
The alpha values for this function work in the following fashion:
If A_array pointer is not NULL, the values are taken from there. It has to have the same dimensions as the Y buffer.
If A_array pointer is NULL, the alpha values for every pixel are set to A_const.
The following equation is used:
|R| |1.1644 0.0000 1.5966| [|Y| | 16.0000|] |G| = |1.1644 -0.3920 -0.8132| * [|U| - |128.0000|] |B| |1.1644 2.0184 0.0000| [|V| |128.0000|]
The function takes the following arguments:
Pointer to output buffer.
Pointer to Y input buffer.
Pointer to U input buffer.
Pointer to V input buffer.
Array of alpha values.
Constant alpha value.
Image width in pixels.
Image height in lines.
Linebytes for output buffer.
Linebytes for Y and alpha buffers.
Linebytes for U and V buffers.
None.
See attributes(5) for descriptions of the following attributes:
|
mlib_VideoColorYUV420seq_to_ARGBint(3MLIB), mlib_VideoColorYUV411seq_to_ARGBint(3MLIB), mlib_VideoColorYUV422seq_to_ARGBint(3MLIB), mlib_VideoColorYUV444seq_to_ARGBint(3MLIB), mlib_VideoColorYUV411seq_to_ABGRint(3MLIB), mlib_VideoColorYUV422seq_to_ABGRint(3MLIB), mlib_VideoColorYUV444seq_to_ABGRint(3MLIB), mlib_VideoColorYUYV422int_to_ARGBint(3MLIB), mlib_VideoColorYUV444int_to_ARGBint(3MLIB), mlib_VideoColorYUYV422int_to_ABGRint(3MLIB), mlib_VideoColorYUV444int_to_ABGRint(3MLIB), mlib_VideoColorUYVY422int_to_ARGBint(3MLIB), mlib_VideoColorUYVY422int_to_ABGRint(3MLIB), mlib_VideoColorUYV444int_to_ARGBint(3MLIB), mlib_VideoColorUYV444int_to_ABGRint(3MLIB), attributes (5)