diff --git a/modules/imgproc/src/color.cpp b/modules/imgproc/src/color.cpp index 6d0d0f8fad..af556c7f03 100644 --- a/modules/imgproc/src/color.cpp +++ b/modules/imgproc/src/color.cpp @@ -6001,6 +6001,7 @@ struct Luv2RGB_b #elif CV_SSE2 v_scale = _mm_set1_ps(255.f); v_zero = _mm_setzero_si128(); + v_alpha = _mm_set1_ps(ColorChannel::max()); haveSIMD = checkHardwareSupport(CV_CPU_SSE2); #endif } @@ -6163,6 +6164,32 @@ struct Luv2RGB_b if (jr) dst -= jr, j -= jr; } + else if (dcn == 4 && haveSIMD) + { + for ( ; j <= (dn * 3 - 12); j += 12, dst += 16) + { + __m128 v_buf0 = _mm_mul_ps(_mm_load_ps(buf + j), v_scale); + __m128 v_buf1 = _mm_mul_ps(_mm_load_ps(buf + j + 4), v_scale); + __m128 v_buf2 = _mm_mul_ps(_mm_load_ps(buf + j + 8), v_scale); + + __m128 v_ba0 = _mm_unpackhi_ps(v_buf0, v_alpha); + __m128 v_ba1 = _mm_unpacklo_ps(v_buf2, v_alpha); + + __m128i v_src0 = _mm_cvtps_epi32(_mm_shuffle_ps(v_buf0, v_ba0, 0x44)); + __m128i v_src1 = _mm_shuffle_epi32(_mm_cvtps_epi32(_mm_shuffle_ps(v_ba0, v_buf1, 0x4e)), 0x78); + __m128i v_src2 = _mm_cvtps_epi32(_mm_shuffle_ps(v_buf1, v_ba1, 0x4e)); + __m128i v_src3 = _mm_shuffle_epi32(_mm_cvtps_epi32(_mm_shuffle_ps(v_ba1, v_buf2, 0xee)), 0x78); + + __m128i v_dst0 = _mm_packs_epi32(v_src0, v_src1); + __m128i v_dst1 = _mm_packs_epi32(v_src2, v_src3); + + _mm_storeu_si128((__m128i *)dst, _mm_packus_epi16(v_dst0, v_dst1)); + } + + int jr = j % 3; + if (jr) + dst -= jr, j -= jr; + } #endif for( ; j < dn*3; j += 3, dst += dcn ) @@ -6184,6 +6211,7 @@ struct Luv2RGB_b uint8x8_t v_alpha; #elif CV_SSE2 __m128 v_scale; + __m128 v_alpha; __m128i v_zero; bool haveSIMD; #endif