diff options
Diffstat (limited to 'files/source/rotate_neon.cc')
| -rw-r--r-- | files/source/rotate_neon.cc | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/files/source/rotate_neon.cc b/files/source/rotate_neon.cc index 844df2bf..569a7318 100644 --- a/files/source/rotate_neon.cc +++ b/files/source/rotate_neon.cc @@ -410,6 +410,46 @@ void TransposeUVWx8_NEON(const uint8_t* src, : "r"(&kVTbl4x4TransposeDi) // %8 : "memory", "cc", "q0", "q1", "q2", "q3", "q8", "q9", "q10", "q11"); } + +// Transpose 32 bit values (ARGB) +void Transpose4x4_32_NEON(const uint8_t* src, + int src_stride, + uint8_t* dst, + int dst_stride, + int width) { + const uint8_t* src1 = src + src_stride; + const uint8_t* src2 = src1 + src_stride; + const uint8_t* src3 = src2 + src_stride; + uint8_t* dst1 = dst + dst_stride; + uint8_t* dst2 = dst1 + dst_stride; + uint8_t* dst3 = dst2 + dst_stride; + asm volatile( + // Main loop transpose 4x4. Read a column, write a row. + "1: \n" + "vld4.32 {d0[0], d2[0], d4[0], d6[0]}, [%0], %9 \n" + "vld4.32 {d0[1], d2[1], d4[1], d6[1]}, [%1], %9 \n" + "vld4.32 {d1[0], d3[0], d5[0], d7[0]}, [%2], %9 \n" + "vld4.32 {d1[1], d3[1], d5[1], d7[1]}, [%3], %9 \n" + "subs %8, %8, #4 \n" // w -= 4 + "vst1.8 {q0}, [%4]! \n" + "vst1.8 {q1}, [%5]! \n" + "vst1.8 {q2}, [%6]! \n" + "vst1.8 {q3}, [%7]! \n" + "bgt 1b \n" + + : "+r"(src), // %0 + "+r"(src1), // %1 + "+r"(src2), // %2 + "+r"(src3), // %3 + "+r"(dst), // %4 + "+r"(dst1), // %5 + "+r"(dst2), // %6 + "+r"(dst3), // %7 + "+r"(width) // %8 + : "r"((ptrdiff_t)(src_stride * 4)) // %9 + : "memory", "cc", "q0", "q1", "q2", "q3"); +} + #endif // defined(__ARM_NEON__) && !defined(__aarch64__) #ifdef __cplusplus |