diff options
Diffstat (limited to 'files/source/scale_neon.cc')
| -rw-r--r-- | files/source/scale_neon.cc | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/files/source/scale_neon.cc b/files/source/scale_neon.cc index 6a0d6e1b..ccc75106 100644 --- a/files/source/scale_neon.cc +++ b/files/source/scale_neon.cc @@ -1428,6 +1428,45 @@ void ScaleARGBFilterCols_NEON(uint8_t* dst_argb, #undef LOAD2_DATA32_LANE +void ScaleUVRowDown2_NEON(const uint8_t* src_ptr, + ptrdiff_t src_stride, + uint8_t* dst, + int dst_width) { + (void)src_stride; + asm volatile( + "1: \n" + "vld2.16 {d0, d2}, [%0]! \n" // load 8 UV pixels. + "vld2.16 {d1, d3}, [%0]! \n" // load next 8 UV + "subs %2, %2, #8 \n" // 8 processed per loop. + "vst1.16 {q1}, [%1]! \n" // store 8 UV + "bgt 1b \n" + : "+r"(src_ptr), // %0 + "+r"(dst), // %1 + "+r"(dst_width) // %2 + : + : "memory", "cc", "q0", "q1"); +} + +void ScaleUVRowDown2Linear_NEON(const uint8_t* src_ptr, + ptrdiff_t src_stride, + uint8_t* dst, + int dst_width) { + (void)src_stride; + asm volatile( + "1: \n" + "vld2.16 {d0, d2}, [%0]! \n" // load 8 UV pixels. + "vld2.16 {d1, d3}, [%0]! \n" // load next 8 UV + "subs %2, %2, #8 \n" // 8 processed per loop. + "vrhadd.u8 q0, q0, q1 \n" // rounding half add + "vst1.16 {q0}, [%1]! \n" // store 8 UV + "bgt 1b \n" + : "+r"(src_ptr), // %0 + "+r"(dst), // %1 + "+r"(dst_width) // %2 + : + : "memory", "cc", "q0", "q1"); +} + void ScaleUVRowDown2Box_NEON(const uint8_t* src_ptr, ptrdiff_t src_stride, uint8_t* dst, |