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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /media/libvpx/libvpx/vpx_dsp/arm/avg_neon.c | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'media/libvpx/libvpx/vpx_dsp/arm/avg_neon.c')
-rw-r--r-- | media/libvpx/libvpx/vpx_dsp/arm/avg_neon.c | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_dsp/arm/avg_neon.c b/media/libvpx/libvpx/vpx_dsp/arm/avg_neon.c new file mode 100644 index 0000000000..8c61fc26f4 --- /dev/null +++ b/media/libvpx/libvpx/vpx_dsp/arm/avg_neon.c @@ -0,0 +1,237 @@ +/* + * Copyright (c) 2015 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_config.h" + +#include "vpx/vpx_integer.h" +#include "vpx_dsp/arm/idct_neon.h" +#include "vpx_dsp/arm/mem_neon.h" +#include "vpx_dsp/arm/sum_neon.h" + +uint32_t vpx_avg_4x4_neon(const uint8_t *a, int a_stride) { + const uint8x16_t b = load_unaligned_u8q(a, a_stride); + const uint16x8_t c = vaddl_u8(vget_low_u8(b), vget_high_u8(b)); + return (horizontal_add_uint16x8(c) + (1 << 3)) >> 4; +} + +uint32_t vpx_avg_8x8_neon(const uint8_t *a, int a_stride) { + int i; + uint8x8_t b, c; + uint16x8_t sum; + b = vld1_u8(a); + a += a_stride; + c = vld1_u8(a); + a += a_stride; + sum = vaddl_u8(b, c); + + for (i = 0; i < 6; ++i) { + const uint8x8_t d = vld1_u8(a); + a += a_stride; + sum = vaddw_u8(sum, d); + } + + return (horizontal_add_uint16x8(sum) + (1 << 5)) >> 6; +} + +// coeff: 16 bits, dynamic range [-32640, 32640]. +// length: value range {16, 64, 256, 1024}. +// satd: 26 bits, dynamic range [-32640 * 1024, 32640 * 1024] +int vpx_satd_neon(const tran_low_t *coeff, int length) { + int32x4_t sum_s32[2] = { vdupq_n_s32(0), vdupq_n_s32(0) }; + + do { + int16x8_t abs0, abs1; + const int16x8_t s0 = load_tran_low_to_s16q(coeff); + const int16x8_t s1 = load_tran_low_to_s16q(coeff + 8); + + abs0 = vabsq_s16(s0); + sum_s32[0] = vpadalq_s16(sum_s32[0], abs0); + abs1 = vabsq_s16(s1); + sum_s32[1] = vpadalq_s16(sum_s32[1], abs1); + + length -= 16; + coeff += 16; + } while (length != 0); + + return horizontal_add_int32x4(vaddq_s32(sum_s32[0], sum_s32[1])); +} + +void vpx_int_pro_row_neon(int16_t hbuf[16], uint8_t const *ref, + const int ref_stride, const int height) { + int i; + uint16x8_t vec_sum_lo = vdupq_n_u16(0); + uint16x8_t vec_sum_hi = vdupq_n_u16(0); + const int shift_factor = ((height >> 5) + 3) * -1; + const int16x8_t vec_shift = vdupq_n_s16(shift_factor); + + for (i = 0; i < height; i += 8) { + const uint8x16_t vec_row1 = vld1q_u8(ref); + const uint8x16_t vec_row2 = vld1q_u8(ref + ref_stride); + const uint8x16_t vec_row3 = vld1q_u8(ref + ref_stride * 2); + const uint8x16_t vec_row4 = vld1q_u8(ref + ref_stride * 3); + const uint8x16_t vec_row5 = vld1q_u8(ref + ref_stride * 4); + const uint8x16_t vec_row6 = vld1q_u8(ref + ref_stride * 5); + const uint8x16_t vec_row7 = vld1q_u8(ref + ref_stride * 6); + const uint8x16_t vec_row8 = vld1q_u8(ref + ref_stride * 7); + + vec_sum_lo = vaddw_u8(vec_sum_lo, vget_low_u8(vec_row1)); + vec_sum_hi = vaddw_u8(vec_sum_hi, vget_high_u8(vec_row1)); + + vec_sum_lo = vaddw_u8(vec_sum_lo, vget_low_u8(vec_row2)); + vec_sum_hi = vaddw_u8(vec_sum_hi, vget_high_u8(vec_row2)); + + vec_sum_lo = vaddw_u8(vec_sum_lo, vget_low_u8(vec_row3)); + vec_sum_hi = vaddw_u8(vec_sum_hi, vget_high_u8(vec_row3)); + + vec_sum_lo = vaddw_u8(vec_sum_lo, vget_low_u8(vec_row4)); + vec_sum_hi = vaddw_u8(vec_sum_hi, vget_high_u8(vec_row4)); + + vec_sum_lo = vaddw_u8(vec_sum_lo, vget_low_u8(vec_row5)); + vec_sum_hi = vaddw_u8(vec_sum_hi, vget_high_u8(vec_row5)); + + vec_sum_lo = vaddw_u8(vec_sum_lo, vget_low_u8(vec_row6)); + vec_sum_hi = vaddw_u8(vec_sum_hi, vget_high_u8(vec_row6)); + + vec_sum_lo = vaddw_u8(vec_sum_lo, vget_low_u8(vec_row7)); + vec_sum_hi = vaddw_u8(vec_sum_hi, vget_high_u8(vec_row7)); + + vec_sum_lo = vaddw_u8(vec_sum_lo, vget_low_u8(vec_row8)); + vec_sum_hi = vaddw_u8(vec_sum_hi, vget_high_u8(vec_row8)); + + ref += ref_stride * 8; + } + + vec_sum_lo = vshlq_u16(vec_sum_lo, vec_shift); + vec_sum_hi = vshlq_u16(vec_sum_hi, vec_shift); + + vst1q_s16(hbuf, vreinterpretq_s16_u16(vec_sum_lo)); + hbuf += 8; + vst1q_s16(hbuf, vreinterpretq_s16_u16(vec_sum_hi)); +} + +int16_t vpx_int_pro_col_neon(uint8_t const *ref, const int width) { + int i; + uint16x8_t vec_sum = vdupq_n_u16(0); + + for (i = 0; i < width; i += 16) { + const uint8x16_t vec_row = vld1q_u8(ref); + vec_sum = vaddw_u8(vec_sum, vget_low_u8(vec_row)); + vec_sum = vaddw_u8(vec_sum, vget_high_u8(vec_row)); + ref += 16; + } + + return (int16_t)horizontal_add_uint16x8(vec_sum); +} + +// ref, src = [0, 510] - max diff = 16-bits +// bwl = {2, 3, 4}, width = {16, 32, 64} +int vpx_vector_var_neon(int16_t const *ref, int16_t const *src, const int bwl) { + int width = 4 << bwl; + int32x4_t sse = vdupq_n_s32(0); + int16x8_t total = vdupq_n_s16(0); + + assert(width >= 8); + assert((width % 8) == 0); + + do { + const int16x8_t r = vld1q_s16(ref); + const int16x8_t s = vld1q_s16(src); + const int16x8_t diff = vsubq_s16(r, s); // [-510, 510], 10 bits. + const int16x4_t diff_lo = vget_low_s16(diff); + const int16x4_t diff_hi = vget_high_s16(diff); + sse = vmlal_s16(sse, diff_lo, diff_lo); // dynamic range 26 bits. + sse = vmlal_s16(sse, diff_hi, diff_hi); + total = vaddq_s16(total, diff); // dynamic range 16 bits. + + ref += 8; + src += 8; + width -= 8; + } while (width != 0); + + { + // Note: 'total''s pairwise addition could be implemented similarly to + // horizontal_add_uint16x8(), but one less vpaddl with 'total' when paired + // with the summation of 'sse' performed better on a Cortex-A15. + const int32x4_t t0 = vpaddlq_s16(total); // cascading summation of 'total' + const int32x2_t t1 = vadd_s32(vget_low_s32(t0), vget_high_s32(t0)); + const int32x2_t t2 = vpadd_s32(t1, t1); + const int t = vget_lane_s32(t2, 0); + const int64x2_t s0 = vpaddlq_s32(sse); // cascading summation of 'sse'. + const int32x2_t s1 = vadd_s32(vreinterpret_s32_s64(vget_low_s64(s0)), + vreinterpret_s32_s64(vget_high_s64(s0))); + const int s = vget_lane_s32(s1, 0); + const int shift_factor = bwl + 2; + return s - ((t * t) >> shift_factor); + } +} + +void vpx_minmax_8x8_neon(const uint8_t *a, int a_stride, const uint8_t *b, + int b_stride, int *min, int *max) { + // Load and concatenate. + const uint8x16_t a01 = vcombine_u8(vld1_u8(a), vld1_u8(a + a_stride)); + const uint8x16_t a23 = + vcombine_u8(vld1_u8(a + 2 * a_stride), vld1_u8(a + 3 * a_stride)); + const uint8x16_t a45 = + vcombine_u8(vld1_u8(a + 4 * a_stride), vld1_u8(a + 5 * a_stride)); + const uint8x16_t a67 = + vcombine_u8(vld1_u8(a + 6 * a_stride), vld1_u8(a + 7 * a_stride)); + + const uint8x16_t b01 = vcombine_u8(vld1_u8(b), vld1_u8(b + b_stride)); + const uint8x16_t b23 = + vcombine_u8(vld1_u8(b + 2 * b_stride), vld1_u8(b + 3 * b_stride)); + const uint8x16_t b45 = + vcombine_u8(vld1_u8(b + 4 * b_stride), vld1_u8(b + 5 * b_stride)); + const uint8x16_t b67 = + vcombine_u8(vld1_u8(b + 6 * b_stride), vld1_u8(b + 7 * b_stride)); + + // Absolute difference. + const uint8x16_t ab01_diff = vabdq_u8(a01, b01); + const uint8x16_t ab23_diff = vabdq_u8(a23, b23); + const uint8x16_t ab45_diff = vabdq_u8(a45, b45); + const uint8x16_t ab67_diff = vabdq_u8(a67, b67); + + // Max values between the Q vectors. + const uint8x16_t ab0123_max = vmaxq_u8(ab01_diff, ab23_diff); + const uint8x16_t ab4567_max = vmaxq_u8(ab45_diff, ab67_diff); + const uint8x16_t ab0123_min = vminq_u8(ab01_diff, ab23_diff); + const uint8x16_t ab4567_min = vminq_u8(ab45_diff, ab67_diff); + + const uint8x16_t ab07_max = vmaxq_u8(ab0123_max, ab4567_max); + const uint8x16_t ab07_min = vminq_u8(ab0123_min, ab4567_min); + +#if VPX_ARCH_AARCH64 + *min = *max = 0; // Clear high bits + *((uint8_t *)max) = vmaxvq_u8(ab07_max); + *((uint8_t *)min) = vminvq_u8(ab07_min); +#else + // Split into 64-bit vectors and execute pairwise min/max. + uint8x8_t ab_max = vmax_u8(vget_high_u8(ab07_max), vget_low_u8(ab07_max)); + uint8x8_t ab_min = vmin_u8(vget_high_u8(ab07_min), vget_low_u8(ab07_min)); + + // Enough runs of vpmax/min propagate the max/min values to every position. + ab_max = vpmax_u8(ab_max, ab_max); + ab_min = vpmin_u8(ab_min, ab_min); + + ab_max = vpmax_u8(ab_max, ab_max); + ab_min = vpmin_u8(ab_min, ab_min); + + ab_max = vpmax_u8(ab_max, ab_max); + ab_min = vpmin_u8(ab_min, ab_min); + + *min = *max = 0; // Clear high bits + // Store directly to avoid costly neon->gpr transfer. + vst1_lane_u8((uint8_t *)max, ab_max, 0); + vst1_lane_u8((uint8_t *)min, ab_min, 0); +#endif +} |