diff options
Diffstat (limited to 'vpx_dsp/arm/sum_squares_neon.c')
| -rw-r--r-- | vpx_dsp/arm/sum_squares_neon.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/vpx_dsp/arm/sum_squares_neon.c b/vpx_dsp/arm/sum_squares_neon.c new file mode 100644 index 000000000..8942ba83b --- /dev/null +++ b/vpx_dsp/arm/sum_squares_neon.c @@ -0,0 +1,85 @@ +/* + * Copyright (c) 2018 The WebM project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include <arm_neon.h> + +#include <assert.h> +#include "./vpx_dsp_rtcd.h" + +uint64_t vpx_sum_squares_2d_i16_neon(const int16_t *src, int stride, int size) { + int64x1_t s2; + + if (size == 4) { + int16x4_t s[4]; + int32x4_t s0; + uint32x2_t s1; + + s[0] = vld1_s16(src + 0 * stride); + s[1] = vld1_s16(src + 1 * stride); + s[2] = vld1_s16(src + 2 * stride); + s[3] = vld1_s16(src + 3 * stride); + s0 = vmull_s16(s[0], s[0]); + s0 = vmlal_s16(s0, s[1], s[1]); + s0 = vmlal_s16(s0, s[2], s[2]); + s0 = vmlal_s16(s0, s[3], s[3]); + s1 = vpadd_u32(vget_low_u32(vreinterpretq_u32_s32(s0)), + vget_high_u32(vreinterpretq_u32_s32(s0))); + s2 = vpaddl_u32(s1); + } else { + int r = size; + uint64x2_t s1 = vdupq_n_u64(0); + + do { + int c = size; + int32x4_t s0 = vdupq_n_s32(0); + const int16_t *src_t = src; + + do { + int16x8_t s[8]; + + s[0] = vld1q_s16(src_t + 0 * stride); + s[1] = vld1q_s16(src_t + 1 * stride); + s[2] = vld1q_s16(src_t + 2 * stride); + s[3] = vld1q_s16(src_t + 3 * stride); + s[4] = vld1q_s16(src_t + 4 * stride); + s[5] = vld1q_s16(src_t + 5 * stride); + s[6] = vld1q_s16(src_t + 6 * stride); + s[7] = vld1q_s16(src_t + 7 * stride); + s0 = vmlal_s16(s0, vget_low_s16(s[0]), vget_low_s16(s[0])); + s0 = vmlal_s16(s0, vget_low_s16(s[1]), vget_low_s16(s[1])); + s0 = vmlal_s16(s0, vget_low_s16(s[2]), vget_low_s16(s[2])); + s0 = vmlal_s16(s0, vget_low_s16(s[3]), vget_low_s16(s[3])); + s0 = vmlal_s16(s0, vget_low_s16(s[4]), vget_low_s16(s[4])); + s0 = vmlal_s16(s0, vget_low_s16(s[5]), vget_low_s16(s[5])); + s0 = vmlal_s16(s0, vget_low_s16(s[6]), vget_low_s16(s[6])); + s0 = vmlal_s16(s0, vget_low_s16(s[7]), vget_low_s16(s[7])); + s0 = vmlal_s16(s0, vget_high_s16(s[0]), vget_high_s16(s[0])); + s0 = vmlal_s16(s0, vget_high_s16(s[1]), vget_high_s16(s[1])); + s0 = vmlal_s16(s0, vget_high_s16(s[2]), vget_high_s16(s[2])); + s0 = vmlal_s16(s0, vget_high_s16(s[3]), vget_high_s16(s[3])); + s0 = vmlal_s16(s0, vget_high_s16(s[4]), vget_high_s16(s[4])); + s0 = vmlal_s16(s0, vget_high_s16(s[5]), vget_high_s16(s[5])); + s0 = vmlal_s16(s0, vget_high_s16(s[6]), vget_high_s16(s[6])); + s0 = vmlal_s16(s0, vget_high_s16(s[7]), vget_high_s16(s[7])); + src_t += 8; + c -= 8; + } while (c); + + s1 = vaddw_u32(s1, vget_low_u32(vreinterpretq_u32_s32(s0))); + s1 = vaddw_u32(s1, vget_high_u32(vreinterpretq_u32_s32(s0))); + src += 8 * stride; + r -= 8; + } while (r); + + s2 = vadd_u64(vget_low_u64(s1), vget_high_u64(s1)); + } + + return vget_lane_u64(s2, 0); +} |