void BgrToGray(const uint8_t *bgr, size_t width, size_t height, size_t bgrStride, uint8_t *gray, size_t grayStride)
{
for(size_t row = 0; row < height; ++row)
{
const uint8_t * pBgr = bgr + row*bgrStride;
uint8_t * pGray = gray + row*grayStride;
for(const uint8_t *pGrayEnd = pGray + width; pGray < pGrayEnd; pGray += 1, pBgr += 3)
{
*pGray = BgrToGray(pBgr[0], pBgr[1], pBgr[2]);
}
}
}
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);
}
}
SIMD_INLINE uint8x8_t BgraToGray(uint8x8x4_t bgra)
{
return vmovn_u16(BgrToGray(vmovl_u8(bgra.val[0]), vmovl_u8(bgra.val[1]), vmovl_u8(bgra.val[2])));
}
