void BgrToYuv420p(const uint8_t * bgr, size_t width, size_t height, size_t bgrStride, uint8_t * y, size_t yStride,
uint8_t * u, size_t uStride, uint8_t * v, size_t vStride)
{
assert((width%2 == 0) && (height%2 == 0) && (width >= 2) && (height >= 2));
for(size_t row = 0; row < height; row += 2)
{
for(size_t colUV = 0, colY = 0, colBgr = 0; colY < width; colY += 2, colUV++, colBgr += 6)
{
BgrToYuv420p(bgr + colBgr, bgrStride, y + colY, yStride, u + colUV, v + colUV);
}
y += 2*yStride;
u += uStride;
v += vStride;
bgr += 2*bgrStride;
}
}
template <class A> SIMD_INLINE void Convert(const Frame<A> & src, Frame<A> & dst)
{
assert(EqualSize(src, dst) && src.format && dst.format);
if (src.format == dst.format)
{
Copy(src, dst);
return;
}
switch (src.format)
{
case Frame<A>::Nv12:
switch (dst.format)
{
case Frame<A>::Yuv420p:
Copy(src.planes[0], dst.planes[0]);
DeinterleaveUv(src.planes[1], dst.planes[1], dst.planes[2]);
break;
case Frame<A>::Bgra32:
{
View<A> u(src.Size(), View<A>::Gray8), v(src.Size(), View<A>::Gray8);
DeinterleaveUv(src.planes[1], u, v);
Yuv420pToBgra(src.planes[0], u, v, dst.planes[0]);
break;
}
case Frame<A>::Bgr24:
{
View<A> u(src.Size(), View<A>::Gray8), v(src.Size(), View<A>::Gray8);
DeinterleaveUv(src.planes[1], u, v);
Yuv420pToBgr(src.planes[0], u, v, dst.planes[0]);
break;
}
case Frame<A>::Gray8:
Copy(src.planes[0], dst.planes[0]);
break;
default:
assert(0);
}
break;
case Frame<A>::Yuv420p:
switch (dst.format)
{
case Frame<A>::Nv12:
Copy(src.planes[0], dst.planes[0]);
InterleaveUv(src.planes[1], src.planes[2], dst.planes[1]);
break;
case Frame<A>::Bgra32:
Yuv420pToBgra(src.planes[0], src.planes[1], src.planes[2], dst.planes[0]);
break;
case Frame<A>::Bgr24:
Yuv420pToBgr(src.planes[0], src.planes[1], src.planes[2], dst.planes[0]);
break;
case Frame<A>::Gray8:
Copy(src.planes[0], dst.planes[0]);
break;
default:
assert(0);
}
break;
case Frame<A>::Bgra32:
switch (dst.format)
{
case Frame<A>::Nv12:
{
View<A> u(src.Size(), View<A>::Gray8), v(src.Size(), View<A>::Gray8);
BgraToYuv420p(src.planes[0], dst.planes[0], u, v);
InterleaveUv(u, v, dst.planes[1]);
break;
}
case Frame<A>::Yuv420p:
BgraToYuv420p(src.planes[0], dst.planes[0], dst.planes[1], dst.planes[2]);
break;
case Frame<A>::Bgr24:
BgraToBgr(src.planes[0], dst.planes[0]);
break;
case Frame<A>::Gray8:
BgraToGray(src.planes[0], dst.planes[0]);
break;
default:
assert(0);
}
break;
case Frame<A>::Bgr24:
switch (dst.format)
{
case Frame<A>::Nv12:
{
View<A> u(src.Size(), View<A>::Gray8), v(src.Size(), View<A>::Gray8);
BgrToYuv420p(src.planes[0], dst.planes[0], u, v);
InterleaveUv(u, v, dst.planes[1]);
break;
}
case Frame<A>::Yuv420p:
BgrToYuv420p(src.planes[0], dst.planes[0], dst.planes[1], dst.planes[2]);
break;
case Frame<A>::Bgra32:
BgrToBgra(src.planes[0], dst.planes[0]);
break;
case Frame<A>::Gray8:
BgrToGray(src.planes[0], dst.planes[0]);
break;
default:
assert(0);
}
break;
case Frame<A>::Gray8:
switch (dst.format)
{
case Frame<A>::Nv12:
Copy(src.planes[0], dst.planes[0]);
Fill(dst.planes[1], 128);
case Frame<A>::Yuv420p:
Copy(src.planes[0], dst.planes[0]);
Fill(dst.planes[1], 128);
Fill(dst.planes[2], 128);
break;
case Frame<A>::Bgra32:
GrayToBgra(src.planes[0], dst.planes[0]);
break;
case Frame<A>::Bgr24:
GrayToBgr(src.planes[0], dst.planes[0]);
break;
default:
assert(0);
}
break;
default:
assert(0);
}
}