/* * Copyright (c) 2014 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 #include "./vp9_rtcd.h" #include "vpx_ports/mem.h" #include "vpx/vpx_integer.h" #include "vp9/common/vp9_common.h" #include "vp9/common/vp9_filter.h" #include "vp9/encoder/vp9_variance.h" enum { kWidth8 = 8 }; enum { kHeight8 = 8 }; enum { kHeight8PlusOne = 9 }; enum { kWidth16 = 16 }; enum { kHeight16 = 16 }; enum { kHeight16PlusOne = 17 }; enum { kWidth32 = 32 }; enum { kHeight32 = 32 }; enum { kHeight32PlusOne = 33 }; enum { kPixelStepOne = 1 }; enum { kAlign16 = 16 }; 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); } static void variance_neon_w8(const uint8_t *a, int a_stride, const uint8_t *b, int b_stride, int w, int h, unsigned int *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 vp9_get8x8var_neon(const uint8_t *src_ptr, int source_stride, const uint8_t *ref_ptr, int ref_stride, unsigned int *sse, int *sum) { variance_neon_w8(src_ptr, source_stride, ref_ptr, ref_stride, kWidth8, kHeight8, sse, sum); } unsigned int vp9_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, kWidth8, kHeight8, sse, &sum); return *sse - (((int64_t)sum * sum) / (kWidth8 * kHeight8)); } void vp9_get16x16var_neon(const uint8_t *src_ptr, int source_stride, const uint8_t *ref_ptr, int ref_stride, unsigned int *sse, int *sum) { variance_neon_w8(src_ptr, source_stride, ref_ptr, ref_stride, kWidth16, kHeight16, sse, sum); } unsigned int vp9_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, kWidth16, kHeight16, sse, &sum); return *sse - (((int64_t)sum * sum) / (kWidth16 * kHeight16)); } static void var_filter_block2d_bil_w8(const uint8_t *src_ptr, uint8_t *output_ptr, unsigned int src_pixels_per_line, int pixel_step, unsigned int output_height, unsigned int output_width, const int16_t *vp9_filter) { const uint8x8_t f0 = vmov_n_u8((uint8_t)vp9_filter[0]); const uint8x8_t f1 = vmov_n_u8((uint8_t)vp9_filter[1]); unsigned int i; for (i = 0; i < output_height; ++i) { const uint8x8_t src_0 = vld1_u8(&src_ptr[0]); const uint8x8_t src_1 = vld1_u8(&src_ptr[pixel_step]); const uint16x8_t a = vmull_u8(src_0, f0); const uint16x8_t b = vmlal_u8(a, src_1, f1); const uint8x8_t out = vrshrn_n_u16(b, FILTER_BITS); vst1_u8(&output_ptr[0], out); // Next row... src_ptr += src_pixels_per_line; output_ptr += output_width; } } static void var_filter_block2d_bil_w16(const uint8_t *src_ptr, uint8_t *output_ptr, unsigned int src_pixels_per_line, int pixel_step, unsigned int output_height, unsigned int output_width, const int16_t *vp9_filter) { const uint8x8_t f0 = vmov_n_u8((uint8_t)vp9_filter[0]); const uint8x8_t f1 = vmov_n_u8((uint8_t)vp9_filter[1]); unsigned int i, j; for (i = 0; i < output_height; ++i) { for (j = 0; j < output_width; j += 16) { const uint8x16_t src_0 = vld1q_u8(&src_ptr[j]); const uint8x16_t src_1 = vld1q_u8(&src_ptr[j + pixel_step]); const uint16x8_t a = vmull_u8(vget_low_u8(src_0), f0); const uint16x8_t b = vmlal_u8(a, vget_low_u8(src_1), f1); const uint8x8_t out_lo = vrshrn_n_u16(b, FILTER_BITS); const uint16x8_t c = vmull_u8(vget_high_u8(src_0), f0); const uint16x8_t d = vmlal_u8(c, vget_high_u8(src_1), f1); const uint8x8_t out_hi = vrshrn_n_u16(d, FILTER_BITS); vst1q_u8(&output_ptr[j], vcombine_u8(out_lo, out_hi)); } // Next row... src_ptr += src_pixels_per_line; output_ptr += output_width; } } unsigned int vp9_sub_pixel_variance8x8_neon(const uint8_t *src, int src_stride, int xoffset, int yoffset, const uint8_t *dst, int dst_stride, unsigned int *sse) { DECLARE_ALIGNED_ARRAY(kAlign16, uint8_t, temp2, kHeight8 * kWidth8); DECLARE_ALIGNED_ARRAY(kAlign16, uint8_t, fdata3, kHeight8PlusOne * kWidth8); var_filter_block2d_bil_w8(src, fdata3, src_stride, kPixelStepOne, kHeight8PlusOne, kWidth8, BILINEAR_FILTERS_2TAP(xoffset)); var_filter_block2d_bil_w8(fdata3, temp2, kWidth8, kWidth8, kHeight8, kWidth8, BILINEAR_FILTERS_2TAP(yoffset)); return vp9_variance8x8_neon(temp2, kWidth8, dst, dst_stride, sse); } unsigned int vp9_sub_pixel_variance16x16_neon(const uint8_t *src, int src_stride, int xoffset, int yoffset, const uint8_t *dst, int dst_stride, unsigned int *sse) { DECLARE_ALIGNED_ARRAY(kAlign16, uint8_t, temp2, kHeight16 * kWidth16); DECLARE_ALIGNED_ARRAY(kAlign16, uint8_t, fdata3, kHeight16PlusOne * kWidth16); var_filter_block2d_bil_w16(src, fdata3, src_stride, kPixelStepOne, kHeight16PlusOne, kWidth16, BILINEAR_FILTERS_2TAP(xoffset)); var_filter_block2d_bil_w16(fdata3, temp2, kWidth16, kWidth16, kHeight16, kWidth16, BILINEAR_FILTERS_2TAP(yoffset)); return vp9_variance16x16_neon(temp2, kWidth16, dst, dst_stride, sse); } void vp9_get32x32var_neon(const uint8_t *src_ptr, int source_stride, const uint8_t *ref_ptr, int ref_stride, unsigned int *sse, int *sum) { variance_neon_w8(src_ptr, source_stride, ref_ptr, ref_stride, kWidth32, kHeight32, sse, sum); } unsigned int vp9_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, kWidth32, kHeight32, sse, &sum); return *sse - (((int64_t)sum * sum) / (kWidth32 * kHeight32)); } unsigned int vp9_sub_pixel_variance32x32_neon(const uint8_t *src, int src_stride, int xoffset, int yoffset, const uint8_t *dst, int dst_stride, unsigned int *sse) { DECLARE_ALIGNED_ARRAY(kAlign16, uint8_t, temp2, kHeight32 * kWidth32); DECLARE_ALIGNED_ARRAY(kAlign16, uint8_t, fdata3, kHeight32PlusOne * kWidth32); var_filter_block2d_bil_w16(src, fdata3, src_stride, kPixelStepOne, kHeight32PlusOne, kWidth32, BILINEAR_FILTERS_2TAP(xoffset)); var_filter_block2d_bil_w16(fdata3, temp2, kWidth32, kWidth32, kHeight32, kWidth32, BILINEAR_FILTERS_2TAP(yoffset)); return vp9_variance32x32_neon(temp2, kWidth32, dst, dst_stride, sse); }