diff options
Diffstat (limited to 'media/libvpx/libvpx/vpx_dsp/arm/sum_squares_neon.c')
| -rw-r--r-- | media/libvpx/libvpx/vpx_dsp/arm/sum_squares_neon.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_dsp/arm/sum_squares_neon.c b/media/libvpx/libvpx/vpx_dsp/arm/sum_squares_neon.c new file mode 100644 index 0000000000..074afe3258 --- /dev/null +++ b/media/libvpx/libvpx/vpx_dsp/arm/sum_squares_neon.c @@ -0,0 +1,100 @@ +/* + * 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" +#include "vpx_dsp/arm/sum_neon.h" + +uint64_t vpx_sum_squares_2d_i16_neon(const int16_t *src, int stride, int size) { + if (size == 4) { + int16x4_t s[4]; + int32x4_t sum_s32; + + 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); + + sum_s32 = vmull_s16(s[0], s[0]); + sum_s32 = vmlal_s16(sum_s32, s[1], s[1]); + sum_s32 = vmlal_s16(sum_s32, s[2], s[2]); + sum_s32 = vmlal_s16(sum_s32, s[3], s[3]); + + return horizontal_long_add_uint32x4(vreinterpretq_u32_s32(sum_s32)); + } else { + uint64x2_t sum_u64 = vdupq_n_u64(0); + int rows = size; + + do { + const int16_t *src_ptr = src; + int32x4_t sum_s32[2] = { vdupq_n_s32(0), vdupq_n_s32(0) }; + int cols = size; + + do { + int16x8_t s[8]; + + s[0] = vld1q_s16(src_ptr + 0 * stride); + s[1] = vld1q_s16(src_ptr + 1 * stride); + s[2] = vld1q_s16(src_ptr + 2 * stride); + s[3] = vld1q_s16(src_ptr + 3 * stride); + s[4] = vld1q_s16(src_ptr + 4 * stride); + s[5] = vld1q_s16(src_ptr + 5 * stride); + s[6] = vld1q_s16(src_ptr + 6 * stride); + s[7] = vld1q_s16(src_ptr + 7 * stride); + + sum_s32[0] = + vmlal_s16(sum_s32[0], vget_low_s16(s[0]), vget_low_s16(s[0])); + sum_s32[0] = + vmlal_s16(sum_s32[0], vget_low_s16(s[1]), vget_low_s16(s[1])); + sum_s32[0] = + vmlal_s16(sum_s32[0], vget_low_s16(s[2]), vget_low_s16(s[2])); + sum_s32[0] = + vmlal_s16(sum_s32[0], vget_low_s16(s[3]), vget_low_s16(s[3])); + sum_s32[0] = + vmlal_s16(sum_s32[0], vget_low_s16(s[4]), vget_low_s16(s[4])); + sum_s32[0] = + vmlal_s16(sum_s32[0], vget_low_s16(s[5]), vget_low_s16(s[5])); + sum_s32[0] = + vmlal_s16(sum_s32[0], vget_low_s16(s[6]), vget_low_s16(s[6])); + sum_s32[0] = + vmlal_s16(sum_s32[0], vget_low_s16(s[7]), vget_low_s16(s[7])); + + sum_s32[1] = + vmlal_s16(sum_s32[1], vget_high_s16(s[0]), vget_high_s16(s[0])); + sum_s32[1] = + vmlal_s16(sum_s32[1], vget_high_s16(s[1]), vget_high_s16(s[1])); + sum_s32[1] = + vmlal_s16(sum_s32[1], vget_high_s16(s[2]), vget_high_s16(s[2])); + sum_s32[1] = + vmlal_s16(sum_s32[1], vget_high_s16(s[3]), vget_high_s16(s[3])); + sum_s32[1] = + vmlal_s16(sum_s32[1], vget_high_s16(s[4]), vget_high_s16(s[4])); + sum_s32[1] = + vmlal_s16(sum_s32[1], vget_high_s16(s[5]), vget_high_s16(s[5])); + sum_s32[1] = + vmlal_s16(sum_s32[1], vget_high_s16(s[6]), vget_high_s16(s[6])); + sum_s32[1] = + vmlal_s16(sum_s32[1], vget_high_s16(s[7]), vget_high_s16(s[7])); + + src_ptr += 8; + cols -= 8; + } while (cols); + + sum_u64 = vpadalq_u32(sum_u64, vreinterpretq_u32_s32(sum_s32[0])); + sum_u64 = vpadalq_u32(sum_u64, vreinterpretq_u32_s32(sum_s32[1])); + src += 8 * stride; + rows -= 8; + } while (rows); + + return horizontal_add_uint64x2(sum_u64); + } +} |