diff options
Diffstat (limited to 'third_party/aom/aom_dsp/arm/variance_neon.c')
| -rw-r--r-- | third_party/aom/aom_dsp/arm/variance_neon.c | 400 |
1 files changed, 400 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/arm/variance_neon.c b/third_party/aom/aom_dsp/arm/variance_neon.c new file mode 100644 index 000000000..dbab287e3 --- /dev/null +++ b/third_party/aom/aom_dsp/arm/variance_neon.c @@ -0,0 +1,400 @@ +/* + * Copyright (c) 2016, Alliance for Open Media. All rights reserved + * + * This source code is subject to the terms of the BSD 2 Clause License and + * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License + * was not distributed with this source code in the LICENSE file, you can + * obtain it at www.aomedia.org/license/software. If the Alliance for Open + * Media Patent License 1.0 was not distributed with this source code in the + * PATENTS file, you can obtain it at www.aomedia.org/license/patent. + */ + +#include <arm_neon.h> + +#include "./aom_dsp_rtcd.h" +#include "./aom_config.h" + +#include "aom/aom_integer.h" +#include "aom_ports/mem.h" + +static INLINE int horizontal_add_s16x8(const int16x8_t v_16x8) { + const int32x4_t a = vpaddlq_s16(v_16x8); + const int64x2_t b = vpaddlq_s32(a); + const int32x2_t c = vadd_s32(vreinterpret_s32_s64(vget_low_s64(b)), + vreinterpret_s32_s64(vget_high_s64(b))); + return vget_lane_s32(c, 0); +} + +static INLINE int horizontal_add_s32x4(const int32x4_t v_32x4) { + const int64x2_t b = vpaddlq_s32(v_32x4); + const int32x2_t c = vadd_s32(vreinterpret_s32_s64(vget_low_s64(b)), + vreinterpret_s32_s64(vget_high_s64(b))); + return vget_lane_s32(c, 0); +} + +// w * h must be less than 2048 or local variable v_sum may overflow. +static void variance_neon_w8(const uint8_t *a, int a_stride, const uint8_t *b, + int b_stride, int w, int h, uint32_t *sse, + int *sum) { + int i, j; + int16x8_t v_sum = vdupq_n_s16(0); + int32x4_t v_sse_lo = vdupq_n_s32(0); + int32x4_t v_sse_hi = vdupq_n_s32(0); + + for (i = 0; i < h; ++i) { + for (j = 0; j < w; j += 8) { + const uint8x8_t v_a = vld1_u8(&a[j]); + const uint8x8_t v_b = vld1_u8(&b[j]); + const uint16x8_t v_diff = vsubl_u8(v_a, v_b); + const int16x8_t sv_diff = vreinterpretq_s16_u16(v_diff); + v_sum = vaddq_s16(v_sum, sv_diff); + v_sse_lo = + vmlal_s16(v_sse_lo, vget_low_s16(sv_diff), vget_low_s16(sv_diff)); + v_sse_hi = + vmlal_s16(v_sse_hi, vget_high_s16(sv_diff), vget_high_s16(sv_diff)); + } + a += a_stride; + b += b_stride; + } + + *sum = horizontal_add_s16x8(v_sum); + *sse = (unsigned int)horizontal_add_s32x4(vaddq_s32(v_sse_lo, v_sse_hi)); +} + +void aom_get8x8var_neon(const uint8_t *a, int a_stride, const uint8_t *b, + int b_stride, unsigned int *sse, int *sum) { + variance_neon_w8(a, a_stride, b, b_stride, 8, 8, sse, sum); +} + +void aom_get16x16var_neon(const uint8_t *a, int a_stride, const uint8_t *b, + int b_stride, unsigned int *sse, int *sum) { + variance_neon_w8(a, a_stride, b, b_stride, 16, 16, sse, sum); +} + +unsigned int aom_variance8x8_neon(const uint8_t *a, int a_stride, + const uint8_t *b, int b_stride, + unsigned int *sse) { + int sum; + variance_neon_w8(a, a_stride, b, b_stride, 8, 8, sse, &sum); + return *sse - ((sum * sum) >> 6); +} + +unsigned int aom_variance16x16_neon(const uint8_t *a, int a_stride, + const uint8_t *b, int b_stride, + unsigned int *sse) { + int sum; + variance_neon_w8(a, a_stride, b, b_stride, 16, 16, sse, &sum); + return *sse - (((unsigned int)((int64_t)sum * sum)) >> 8); +} + +unsigned int aom_variance32x32_neon(const uint8_t *a, int a_stride, + const uint8_t *b, int b_stride, + unsigned int *sse) { + int sum; + variance_neon_w8(a, a_stride, b, b_stride, 32, 32, sse, &sum); + return *sse - (unsigned int)(((int64_t)sum * sum) >> 10); +} + +unsigned int aom_variance32x64_neon(const uint8_t *a, int a_stride, + const uint8_t *b, int b_stride, + unsigned int *sse) { + int sum1, sum2; + uint32_t sse1, sse2; + variance_neon_w8(a, a_stride, b, b_stride, 32, 32, &sse1, &sum1); + variance_neon_w8(a + (32 * a_stride), a_stride, b + (32 * b_stride), b_stride, + 32, 32, &sse2, &sum2); + *sse = sse1 + sse2; + sum1 += sum2; + return *sse - (unsigned int)(((int64_t)sum1 * sum1) >> 11); +} + +unsigned int aom_variance64x32_neon(const uint8_t *a, int a_stride, + const uint8_t *b, int b_stride, + unsigned int *sse) { + int sum1, sum2; + uint32_t sse1, sse2; + variance_neon_w8(a, a_stride, b, b_stride, 64, 16, &sse1, &sum1); + variance_neon_w8(a + (16 * a_stride), a_stride, b + (16 * b_stride), b_stride, + 64, 16, &sse2, &sum2); + *sse = sse1 + sse2; + sum1 += sum2; + return *sse - (unsigned int)(((int64_t)sum1 * sum1) >> 11); +} + +unsigned int aom_variance64x64_neon(const uint8_t *a, int a_stride, + const uint8_t *b, int b_stride, + unsigned int *sse) { + int sum1, sum2; + uint32_t sse1, sse2; + + variance_neon_w8(a, a_stride, b, b_stride, 64, 16, &sse1, &sum1); + variance_neon_w8(a + (16 * a_stride), a_stride, b + (16 * b_stride), b_stride, + 64, 16, &sse2, &sum2); + sse1 += sse2; + sum1 += sum2; + + variance_neon_w8(a + (16 * 2 * a_stride), a_stride, b + (16 * 2 * b_stride), + b_stride, 64, 16, &sse2, &sum2); + sse1 += sse2; + sum1 += sum2; + + variance_neon_w8(a + (16 * 3 * a_stride), a_stride, b + (16 * 3 * b_stride), + b_stride, 64, 16, &sse2, &sum2); + *sse = sse1 + sse2; + sum1 += sum2; + return *sse - (unsigned int)(((int64_t)sum1 * sum1) >> 12); +} + +unsigned int aom_variance16x8_neon(const unsigned char *src_ptr, + int source_stride, + const unsigned char *ref_ptr, + int recon_stride, unsigned int *sse) { + int i; + int16x4_t d22s16, d23s16, d24s16, d25s16, d26s16, d27s16, d28s16, d29s16; + uint32x2_t d0u32, d10u32; + int64x1_t d0s64, d1s64; + uint8x16_t q0u8, q1u8, q2u8, q3u8; + uint16x8_t q11u16, q12u16, q13u16, q14u16; + int32x4_t q8s32, q9s32, q10s32; + int64x2_t q0s64, q1s64, q5s64; + + q8s32 = vdupq_n_s32(0); + q9s32 = vdupq_n_s32(0); + q10s32 = vdupq_n_s32(0); + + for (i = 0; i < 4; i++) { + q0u8 = vld1q_u8(src_ptr); + src_ptr += source_stride; + q1u8 = vld1q_u8(src_ptr); + src_ptr += source_stride; + __builtin_prefetch(src_ptr); + + q2u8 = vld1q_u8(ref_ptr); + ref_ptr += recon_stride; + q3u8 = vld1q_u8(ref_ptr); + ref_ptr += recon_stride; + __builtin_prefetch(ref_ptr); + + q11u16 = vsubl_u8(vget_low_u8(q0u8), vget_low_u8(q2u8)); + q12u16 = vsubl_u8(vget_high_u8(q0u8), vget_high_u8(q2u8)); + q13u16 = vsubl_u8(vget_low_u8(q1u8), vget_low_u8(q3u8)); + q14u16 = vsubl_u8(vget_high_u8(q1u8), vget_high_u8(q3u8)); + + d22s16 = vreinterpret_s16_u16(vget_low_u16(q11u16)); + d23s16 = vreinterpret_s16_u16(vget_high_u16(q11u16)); + q8s32 = vpadalq_s16(q8s32, vreinterpretq_s16_u16(q11u16)); + q9s32 = vmlal_s16(q9s32, d22s16, d22s16); + q10s32 = vmlal_s16(q10s32, d23s16, d23s16); + + d24s16 = vreinterpret_s16_u16(vget_low_u16(q12u16)); + d25s16 = vreinterpret_s16_u16(vget_high_u16(q12u16)); + q8s32 = vpadalq_s16(q8s32, vreinterpretq_s16_u16(q12u16)); + q9s32 = vmlal_s16(q9s32, d24s16, d24s16); + q10s32 = vmlal_s16(q10s32, d25s16, d25s16); + + d26s16 = vreinterpret_s16_u16(vget_low_u16(q13u16)); + d27s16 = vreinterpret_s16_u16(vget_high_u16(q13u16)); + q8s32 = vpadalq_s16(q8s32, vreinterpretq_s16_u16(q13u16)); + q9s32 = vmlal_s16(q9s32, d26s16, d26s16); + q10s32 = vmlal_s16(q10s32, d27s16, d27s16); + + d28s16 = vreinterpret_s16_u16(vget_low_u16(q14u16)); + d29s16 = vreinterpret_s16_u16(vget_high_u16(q14u16)); + q8s32 = vpadalq_s16(q8s32, vreinterpretq_s16_u16(q14u16)); + q9s32 = vmlal_s16(q9s32, d28s16, d28s16); + q10s32 = vmlal_s16(q10s32, d29s16, d29s16); + } + + q10s32 = vaddq_s32(q10s32, q9s32); + q0s64 = vpaddlq_s32(q8s32); + q1s64 = vpaddlq_s32(q10s32); + + d0s64 = vadd_s64(vget_low_s64(q0s64), vget_high_s64(q0s64)); + d1s64 = vadd_s64(vget_low_s64(q1s64), vget_high_s64(q1s64)); + + q5s64 = vmull_s32(vreinterpret_s32_s64(d0s64), vreinterpret_s32_s64(d0s64)); + vst1_lane_u32((uint32_t *)sse, vreinterpret_u32_s64(d1s64), 0); + + d10u32 = vshr_n_u32(vreinterpret_u32_s64(vget_low_s64(q5s64)), 7); + d0u32 = vsub_u32(vreinterpret_u32_s64(d1s64), d10u32); + + return vget_lane_u32(d0u32, 0); +} + +unsigned int aom_variance8x16_neon(const unsigned char *src_ptr, + int source_stride, + const unsigned char *ref_ptr, + int recon_stride, unsigned int *sse) { + int i; + uint8x8_t d0u8, d2u8, d4u8, d6u8; + int16x4_t d22s16, d23s16, d24s16, d25s16; + uint32x2_t d0u32, d10u32; + int64x1_t d0s64, d1s64; + uint16x8_t q11u16, q12u16; + int32x4_t q8s32, q9s32, q10s32; + int64x2_t q0s64, q1s64, q5s64; + + q8s32 = vdupq_n_s32(0); + q9s32 = vdupq_n_s32(0); + q10s32 = vdupq_n_s32(0); + + for (i = 0; i < 8; i++) { + d0u8 = vld1_u8(src_ptr); + src_ptr += source_stride; + d2u8 = vld1_u8(src_ptr); + src_ptr += source_stride; + __builtin_prefetch(src_ptr); + + d4u8 = vld1_u8(ref_ptr); + ref_ptr += recon_stride; + d6u8 = vld1_u8(ref_ptr); + ref_ptr += recon_stride; + __builtin_prefetch(ref_ptr); + + q11u16 = vsubl_u8(d0u8, d4u8); + q12u16 = vsubl_u8(d2u8, d6u8); + + d22s16 = vreinterpret_s16_u16(vget_low_u16(q11u16)); + d23s16 = vreinterpret_s16_u16(vget_high_u16(q11u16)); + q8s32 = vpadalq_s16(q8s32, vreinterpretq_s16_u16(q11u16)); + q9s32 = vmlal_s16(q9s32, d22s16, d22s16); + q10s32 = vmlal_s16(q10s32, d23s16, d23s16); + + d24s16 = vreinterpret_s16_u16(vget_low_u16(q12u16)); + d25s16 = vreinterpret_s16_u16(vget_high_u16(q12u16)); + q8s32 = vpadalq_s16(q8s32, vreinterpretq_s16_u16(q12u16)); + q9s32 = vmlal_s16(q9s32, d24s16, d24s16); + q10s32 = vmlal_s16(q10s32, d25s16, d25s16); + } + + q10s32 = vaddq_s32(q10s32, q9s32); + q0s64 = vpaddlq_s32(q8s32); + q1s64 = vpaddlq_s32(q10s32); + + d0s64 = vadd_s64(vget_low_s64(q0s64), vget_high_s64(q0s64)); + d1s64 = vadd_s64(vget_low_s64(q1s64), vget_high_s64(q1s64)); + + q5s64 = vmull_s32(vreinterpret_s32_s64(d0s64), vreinterpret_s32_s64(d0s64)); + vst1_lane_u32((uint32_t *)sse, vreinterpret_u32_s64(d1s64), 0); + + d10u32 = vshr_n_u32(vreinterpret_u32_s64(vget_low_s64(q5s64)), 7); + d0u32 = vsub_u32(vreinterpret_u32_s64(d1s64), d10u32); + + return vget_lane_u32(d0u32, 0); +} + +unsigned int aom_mse16x16_neon(const unsigned char *src_ptr, int source_stride, + const unsigned char *ref_ptr, int recon_stride, + unsigned int *sse) { + int i; + int16x4_t d22s16, d23s16, d24s16, d25s16, d26s16, d27s16, d28s16, d29s16; + int64x1_t d0s64; + uint8x16_t q0u8, q1u8, q2u8, q3u8; + int32x4_t q7s32, q8s32, q9s32, q10s32; + uint16x8_t q11u16, q12u16, q13u16, q14u16; + int64x2_t q1s64; + + q7s32 = vdupq_n_s32(0); + q8s32 = vdupq_n_s32(0); + q9s32 = vdupq_n_s32(0); + q10s32 = vdupq_n_s32(0); + + for (i = 0; i < 8; i++) { // mse16x16_neon_loop + q0u8 = vld1q_u8(src_ptr); + src_ptr += source_stride; + q1u8 = vld1q_u8(src_ptr); + src_ptr += source_stride; + q2u8 = vld1q_u8(ref_ptr); + ref_ptr += recon_stride; + q3u8 = vld1q_u8(ref_ptr); + ref_ptr += recon_stride; + + q11u16 = vsubl_u8(vget_low_u8(q0u8), vget_low_u8(q2u8)); + q12u16 = vsubl_u8(vget_high_u8(q0u8), vget_high_u8(q2u8)); + q13u16 = vsubl_u8(vget_low_u8(q1u8), vget_low_u8(q3u8)); + q14u16 = vsubl_u8(vget_high_u8(q1u8), vget_high_u8(q3u8)); + + d22s16 = vreinterpret_s16_u16(vget_low_u16(q11u16)); + d23s16 = vreinterpret_s16_u16(vget_high_u16(q11u16)); + q7s32 = vmlal_s16(q7s32, d22s16, d22s16); + q8s32 = vmlal_s16(q8s32, d23s16, d23s16); + + d24s16 = vreinterpret_s16_u16(vget_low_u16(q12u16)); + d25s16 = vreinterpret_s16_u16(vget_high_u16(q12u16)); + q9s32 = vmlal_s16(q9s32, d24s16, d24s16); + q10s32 = vmlal_s16(q10s32, d25s16, d25s16); + + d26s16 = vreinterpret_s16_u16(vget_low_u16(q13u16)); + d27s16 = vreinterpret_s16_u16(vget_high_u16(q13u16)); + q7s32 = vmlal_s16(q7s32, d26s16, d26s16); + q8s32 = vmlal_s16(q8s32, d27s16, d27s16); + + d28s16 = vreinterpret_s16_u16(vget_low_u16(q14u16)); + d29s16 = vreinterpret_s16_u16(vget_high_u16(q14u16)); + q9s32 = vmlal_s16(q9s32, d28s16, d28s16); + q10s32 = vmlal_s16(q10s32, d29s16, d29s16); + } + + q7s32 = vaddq_s32(q7s32, q8s32); + q9s32 = vaddq_s32(q9s32, q10s32); + q10s32 = vaddq_s32(q7s32, q9s32); + + q1s64 = vpaddlq_s32(q10s32); + d0s64 = vadd_s64(vget_low_s64(q1s64), vget_high_s64(q1s64)); + + vst1_lane_u32((uint32_t *)sse, vreinterpret_u32_s64(d0s64), 0); + return vget_lane_u32(vreinterpret_u32_s64(d0s64), 0); +} + +unsigned int aom_get4x4sse_cs_neon(const unsigned char *src_ptr, + int source_stride, + const unsigned char *ref_ptr, + int recon_stride) { + int16x4_t d22s16, d24s16, d26s16, d28s16; + int64x1_t d0s64; + uint8x8_t d0u8, d1u8, d2u8, d3u8, d4u8, d5u8, d6u8, d7u8; + int32x4_t q7s32, q8s32, q9s32, q10s32; + uint16x8_t q11u16, q12u16, q13u16, q14u16; + int64x2_t q1s64; + + d0u8 = vld1_u8(src_ptr); + src_ptr += source_stride; + d4u8 = vld1_u8(ref_ptr); + ref_ptr += recon_stride; + d1u8 = vld1_u8(src_ptr); + src_ptr += source_stride; + d5u8 = vld1_u8(ref_ptr); + ref_ptr += recon_stride; + d2u8 = vld1_u8(src_ptr); + src_ptr += source_stride; + d6u8 = vld1_u8(ref_ptr); + ref_ptr += recon_stride; + d3u8 = vld1_u8(src_ptr); + src_ptr += source_stride; + d7u8 = vld1_u8(ref_ptr); + ref_ptr += recon_stride; + + q11u16 = vsubl_u8(d0u8, d4u8); + q12u16 = vsubl_u8(d1u8, d5u8); + q13u16 = vsubl_u8(d2u8, d6u8); + q14u16 = vsubl_u8(d3u8, d7u8); + + d22s16 = vget_low_s16(vreinterpretq_s16_u16(q11u16)); + d24s16 = vget_low_s16(vreinterpretq_s16_u16(q12u16)); + d26s16 = vget_low_s16(vreinterpretq_s16_u16(q13u16)); + d28s16 = vget_low_s16(vreinterpretq_s16_u16(q14u16)); + + q7s32 = vmull_s16(d22s16, d22s16); + q8s32 = vmull_s16(d24s16, d24s16); + q9s32 = vmull_s16(d26s16, d26s16); + q10s32 = vmull_s16(d28s16, d28s16); + + q7s32 = vaddq_s32(q7s32, q8s32); + q9s32 = vaddq_s32(q9s32, q10s32); + q9s32 = vaddq_s32(q7s32, q9s32); + + q1s64 = vpaddlq_s32(q9s32); + d0s64 = vadd_s64(vget_low_s64(q1s64), vget_high_s64(q1s64)); + + return vget_lane_u32(vreinterpret_u32_s64(d0s64), 0); +} |