| /* |
| * |
| * Copyright (c) 2020, 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 <assert.h> |
| |
| #include "aom_dsp/arm/mem_neon.h" |
| #include "aom_dsp/arm/transpose_neon.h" |
| #include "av1/common/arm/resize_neon.h" |
| #include "av1/common/resize.h" |
| #include "config/aom_scale_rtcd.h" |
| #include "config/av1_rtcd.h" |
| |
| static inline void scale_plane_2_to_1_phase_0(const uint8_t *src, |
| const int src_stride, |
| uint8_t *dst, |
| const int dst_stride, int w, |
| int h) { |
| assert(w > 0 && h > 0); |
| |
| do { |
| const uint8_t *s = src; |
| uint8_t *d = dst; |
| int width = w; |
| |
| do { |
| const uint8x16x2_t s0 = vld2q_u8(s); |
| |
| vst1q_u8(d, s0.val[0]); |
| |
| s += 32; |
| d += 16; |
| width -= 16; |
| } while (width > 0); |
| |
| src += 2 * src_stride; |
| dst += dst_stride; |
| } while (--h != 0); |
| } |
| |
| static inline void scale_plane_4_to_1_phase_0(const uint8_t *src, |
| const int src_stride, |
| uint8_t *dst, |
| const int dst_stride, int w, |
| int h) { |
| assert(w > 0 && h > 0); |
| |
| do { |
| const uint8_t *s = src; |
| uint8_t *d = dst; |
| int width = w; |
| |
| do { |
| const uint8x16x4_t s0 = vld4q_u8(s); |
| |
| vst1q_u8(d, s0.val[0]); |
| |
| s += 64; |
| d += 16; |
| width -= 16; |
| } while (width > 0); |
| |
| src += 4 * src_stride; |
| dst += dst_stride; |
| } while (--h != 0); |
| } |
| |
| static inline uint8x16_t scale_plane_bilinear_kernel( |
| const uint8x16_t s0_even, const uint8x16_t s0_odd, const uint8x16_t s1_even, |
| const uint8x16_t s1_odd, const uint8x8_t filter0, const uint8x8_t filter1) { |
| // A shim of 1 << (FILTER_BITS - 1) enables us to use non-rounding |
| // shifts - which are generally faster than rounding shifts on modern CPUs. |
| uint16x8_t offset = vdupq_n_u16(1 << (FILTER_BITS - 1)); |
| |
| // Horizontal filtering |
| uint16x8_t h0_lo = vmlal_u8(offset, vget_low_u8(s0_even), filter0); |
| uint16x8_t h0_hi = vmlal_u8(offset, vget_high_u8(s0_even), filter0); |
| uint16x8_t h1_lo = vmlal_u8(offset, vget_low_u8(s1_even), filter0); |
| uint16x8_t h1_hi = vmlal_u8(offset, vget_high_u8(s1_even), filter0); |
| |
| h0_lo = vmlal_u8(h0_lo, vget_low_u8(s0_odd), filter1); |
| h0_hi = vmlal_u8(h0_hi, vget_high_u8(s0_odd), filter1); |
| h1_lo = vmlal_u8(h1_lo, vget_low_u8(s1_odd), filter1); |
| h1_hi = vmlal_u8(h1_hi, vget_high_u8(s1_odd), filter1); |
| |
| const uint8x8_t h0_lo_u8 = vshrn_n_u16(h0_lo, FILTER_BITS); |
| const uint8x8_t h0_hi_u8 = vshrn_n_u16(h0_hi, FILTER_BITS); |
| const uint8x8_t h1_lo_u8 = vshrn_n_u16(h1_lo, FILTER_BITS); |
| const uint8x8_t h1_hi_u8 = vshrn_n_u16(h1_hi, FILTER_BITS); |
| |
| // Vertical filtering |
| uint16x8_t v_lo = vmlal_u8(offset, h0_lo_u8, filter0); |
| uint16x8_t v_hi = vmlal_u8(offset, h0_hi_u8, filter0); |
| |
| v_lo = vmlal_u8(v_lo, h1_lo_u8, filter1); |
| v_hi = vmlal_u8(v_hi, h1_hi_u8, filter1); |
| |
| return vcombine_u8(vshrn_n_u16(v_lo, FILTER_BITS), |
| vshrn_n_u16(v_hi, FILTER_BITS)); |
| } |
| |
| static inline void scale_plane_2_to_1_bilinear( |
| const uint8_t *src, const int src_stride, uint8_t *dst, |
| const int dst_stride, int w, int h, const int16_t f0, const int16_t f1) { |
| assert(w > 0 && h > 0); |
| const uint8x8_t filter0 = vdup_n_u8(f0); |
| const uint8x8_t filter1 = vdup_n_u8(f1); |
| |
| do { |
| const uint8_t *s = src; |
| uint8_t *d = dst; |
| int width = w; |
| |
| do { |
| const uint8x16x2_t s0 = vld2q_u8(s + 0 * src_stride); |
| const uint8x16x2_t s1 = vld2q_u8(s + 1 * src_stride); |
| |
| uint8x16_t d0 = scale_plane_bilinear_kernel( |
| s0.val[0], s0.val[1], s1.val[0], s1.val[1], filter0, filter1); |
| |
| vst1q_u8(d, d0); |
| |
| s += 32; |
| d += 16; |
| width -= 16; |
| } while (width > 0); |
| |
| src += 2 * src_stride; |
| dst += dst_stride; |
| } while (--h != 0); |
| } |
| |
| static inline void scale_plane_4_to_1_bilinear( |
| const uint8_t *src, const int src_stride, uint8_t *dst, |
| const int dst_stride, int w, int h, const int16_t f0, const int16_t f1) { |
| assert(w > 0 && h > 0); |
| const uint8x8_t filter0 = vdup_n_u8(f0); |
| const uint8x8_t filter1 = vdup_n_u8(f1); |
| |
| do { |
| const uint8_t *s = src; |
| uint8_t *d = dst; |
| int width = w; |
| |
| do { |
| const uint8x16x4_t s0 = vld4q_u8(s + 0 * src_stride); |
| const uint8x16x4_t s1 = vld4q_u8(s + 1 * src_stride); |
| |
| uint8x16_t d0 = scale_plane_bilinear_kernel( |
| s0.val[0], s0.val[1], s1.val[0], s1.val[1], filter0, filter1); |
| |
| vst1q_u8(d, d0); |
| |
| s += 64; |
| d += 16; |
| width -= 16; |
| } while (width > 0); |
| |
| src += 4 * src_stride; |
| dst += dst_stride; |
| } while (--h != 0); |
| } |
| |
| static inline void scale_2_to_1_horiz_6tap(const uint8_t *src, |
| const int src_stride, int w, int h, |
| uint8_t *dst, const int dst_stride, |
| const int16x8_t filters) { |
| do { |
| uint8x8_t t0, t1, t2, t3, t4, t5, t6, t7; |
| load_u8_8x8(src, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); |
| |
| transpose_elems_inplace_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); |
| |
| int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0)); |
| int16x8_t s1 = vreinterpretq_s16_u16(vmovl_u8(t1)); |
| int16x8_t s2 = vreinterpretq_s16_u16(vmovl_u8(t2)); |
| int16x8_t s3 = vreinterpretq_s16_u16(vmovl_u8(t3)); |
| int16x8_t s4 = vreinterpretq_s16_u16(vmovl_u8(t4)); |
| int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(t5)); |
| |
| const uint8_t *s = src + 6; |
| uint8_t *d = dst; |
| int width = w; |
| |
| do { |
| uint8x8_t t8, t9, t10, t11, t12, t13; |
| load_u8_8x8(s, src_stride, &t6, &t7, &t8, &t9, &t10, &t11, &t12, &t13); |
| |
| transpose_elems_inplace_u8_8x8(&t6, &t7, &t8, &t9, &t10, &t11, &t12, |
| &t13); |
| |
| int16x8_t s6 = vreinterpretq_s16_u16(vmovl_u8(t6)); |
| int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(t7)); |
| int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t8)); |
| int16x8_t s9 = vreinterpretq_s16_u16(vmovl_u8(t9)); |
| int16x8_t s10 = vreinterpretq_s16_u16(vmovl_u8(t10)); |
| int16x8_t s11 = vreinterpretq_s16_u16(vmovl_u8(t11)); |
| int16x8_t s12 = vreinterpretq_s16_u16(vmovl_u8(t12)); |
| int16x8_t s13 = vreinterpretq_s16_u16(vmovl_u8(t13)); |
| |
| uint8x8_t d0 = scale_filter6_8(s0, s1, s2, s3, s4, s5, filters); |
| uint8x8_t d1 = scale_filter6_8(s2, s3, s4, s5, s6, s7, filters); |
| uint8x8_t d2 = scale_filter6_8(s4, s5, s6, s7, s8, s9, filters); |
| uint8x8_t d3 = scale_filter6_8(s6, s7, s8, s9, s10, s11, filters); |
| |
| transpose_elems_inplace_u8_8x4(&d0, &d1, &d2, &d3); |
| |
| store_u8x4_strided_x2(d + 0 * dst_stride, 4 * dst_stride, d0); |
| store_u8x4_strided_x2(d + 1 * dst_stride, 4 * dst_stride, d1); |
| store_u8x4_strided_x2(d + 2 * dst_stride, 4 * dst_stride, d2); |
| store_u8x4_strided_x2(d + 3 * dst_stride, 4 * dst_stride, d3); |
| |
| s0 = s8; |
| s1 = s9; |
| s2 = s10; |
| s3 = s11; |
| s4 = s12; |
| s5 = s13; |
| |
| d += 4; |
| s += 8; |
| width -= 4; |
| } while (width > 0); |
| |
| dst += 8 * dst_stride; |
| src += 8 * src_stride; |
| h -= 8; |
| } while (h > 0); |
| } |
| |
| static inline void scale_plane_2_to_1_6tap(const uint8_t *src, |
| const int src_stride, uint8_t *dst, |
| const int dst_stride, const int w, |
| const int h, |
| const int16_t *const filter_ptr, |
| uint8_t *const im_block) { |
| assert(w > 0 && h > 0); |
| const int im_h = 2 * h + SUBPEL_TAPS - 3; |
| const int im_stride = (w + 3) & ~3; |
| |
| // All filter values are even, halve them to stay in 16-bit elements when |
| // applying filter. |
| const int16x8_t filters = vshrq_n_s16(vld1q_s16(filter_ptr), 1); |
| |
| const ptrdiff_t horiz_offset = SUBPEL_TAPS / 2 - 2; |
| const ptrdiff_t vert_offset = (SUBPEL_TAPS / 2 - 2) * src_stride; |
| |
| scale_2_to_1_horiz_6tap(src - horiz_offset - vert_offset, src_stride, w, im_h, |
| im_block, im_stride, filters); |
| |
| scale_2_to_1_vert_6tap(im_block, im_stride, w, h, dst, dst_stride, filters); |
| } |
| |
| static inline void scale_4_to_1_horiz_6tap(const uint8_t *src, |
| const int src_stride, int w, int h, |
| uint8_t *dst, const int dst_stride, |
| const int16x8_t filters) { |
| do { |
| uint8x8_t t0, t1, t2, t3, t4, t5, t6, t7; |
| load_u8_8x8(src, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); |
| |
| transpose_elems_u8_4x8(t0, t1, t2, t3, t4, t5, t6, t7, &t0, &t1, &t2, &t3); |
| |
| int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0)); |
| int16x8_t s1 = vreinterpretq_s16_u16(vmovl_u8(t1)); |
| int16x8_t s2 = vreinterpretq_s16_u16(vmovl_u8(t2)); |
| int16x8_t s3 = vreinterpretq_s16_u16(vmovl_u8(t3)); |
| |
| const uint8_t *s = src + 4; |
| uint8_t *d = dst; |
| int width = w; |
| |
| do { |
| uint8x8_t t8, t9, t10, t11; |
| load_u8_8x8(s, src_stride, &t4, &t5, &t6, &t7, &t8, &t9, &t10, &t11); |
| |
| transpose_elems_inplace_u8_8x8(&t4, &t5, &t6, &t7, &t8, &t9, &t10, &t11); |
| |
| int16x8_t s4 = vreinterpretq_s16_u16(vmovl_u8(t4)); |
| int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(t5)); |
| int16x8_t s6 = vreinterpretq_s16_u16(vmovl_u8(t6)); |
| int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(t7)); |
| int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t8)); |
| int16x8_t s9 = vreinterpretq_s16_u16(vmovl_u8(t9)); |
| int16x8_t s10 = vreinterpretq_s16_u16(vmovl_u8(t10)); |
| int16x8_t s11 = vreinterpretq_s16_u16(vmovl_u8(t11)); |
| |
| uint8x8_t d0 = scale_filter6_8(s0, s1, s2, s3, s4, s5, filters); |
| uint8x8_t d1 = scale_filter6_8(s4, s5, s6, s7, s8, s9, filters); |
| |
| uint8x8x2_t d01 = vtrn_u8(d0, d1); |
| |
| store_u8x2_strided_x4(d + 0 * dst_stride, 2 * dst_stride, d01.val[0]); |
| store_u8x2_strided_x4(d + 1 * dst_stride, 2 * dst_stride, d01.val[1]); |
| |
| s0 = s8; |
| s1 = s9; |
| s2 = s10; |
| s3 = s11; |
| |
| d += 2; |
| s += 8; |
| width -= 2; |
| } while (width > 0); |
| |
| dst += 8 * dst_stride; |
| src += 8 * src_stride; |
| h -= 8; |
| } while (h > 0); |
| } |
| |
| static inline void scale_plane_4_to_1_6tap(const uint8_t *src, |
| const int src_stride, uint8_t *dst, |
| const int dst_stride, const int w, |
| const int h, |
| const int16_t *const filter_ptr, |
| uint8_t *const im_block) { |
| assert(w > 0 && h > 0); |
| const int im_h = 4 * h + SUBPEL_TAPS - 3; |
| const int im_stride = (w + 1) & ~1; |
| // All filter values are even, halve them to stay in 16-bit elements when |
| // applying filter. |
| const int16x8_t filters = vshrq_n_s16(vld1q_s16(filter_ptr), 1); |
| |
| const ptrdiff_t horiz_offset = SUBPEL_TAPS / 2 - 2; |
| const ptrdiff_t vert_offset = (SUBPEL_TAPS / 2 - 2) * src_stride; |
| |
| scale_4_to_1_horiz_6tap(src - horiz_offset - vert_offset, src_stride, w, im_h, |
| im_block, im_stride, filters); |
| |
| scale_4_to_1_vert_6tap(im_block, im_stride, w, h, dst, dst_stride, filters); |
| } |
| |
| static inline uint8x8_t scale_filter_bilinear(const uint8x8_t *const s, |
| const uint8x8_t *const coef) { |
| const uint16x8_t h0 = vmull_u8(s[0], coef[0]); |
| const uint16x8_t h1 = vmlal_u8(h0, s[1], coef[1]); |
| |
| return vrshrn_n_u16(h1, 7); |
| } |
| |
| // Notes for 4 to 3 scaling: |
| // |
| // 1. 6 rows are calculated in each horizontal inner loop, so width_hor must be |
| // multiple of 6, and no less than w. |
| // |
| // 2. 8 rows are calculated in each vertical inner loop, so width_ver must be |
| // multiple of 8, and no less than w. |
| // |
| // 3. 8 columns are calculated in each horizontal inner loop for further |
| // vertical scaling, so height_hor must be multiple of 8, and no less than |
| // 4 * h / 3. |
| // |
| // 4. 6 columns are calculated in each vertical inner loop, so height_ver must |
| // be multiple of 6, and no less than h. |
| // |
| // 5. The physical location of the last row of the 4 to 3 scaled frame is |
| // decided by phase_scaler, and are always less than 1 pixel below the last row |
| // of the original image. |
| static inline void scale_plane_4_to_3_bilinear( |
| const uint8_t *src, const int src_stride, uint8_t *dst, |
| const int dst_stride, const int w, const int h, const int phase_scaler, |
| uint8_t *const temp_buffer) { |
| static const int step_q4 = 16 * 4 / 3; |
| const int width_hor = (w + 5) - ((w + 5) % 6); |
| const int stride_hor = width_hor + 2; // store 2 extra pixels |
| const int width_ver = (w + 7) & ~7; |
| // We only need 1 extra row below because there are only 2 bilinear |
| // coefficients. |
| const int height_hor = (4 * h / 3 + 1 + 7) & ~7; |
| const int height_ver = (h + 5) - ((h + 5) % 6); |
| int x, y = height_hor; |
| uint8_t *t = temp_buffer; |
| uint8x8_t s[9], d[8], c[6]; |
| const InterpKernel *interp_kernel = |
| (const InterpKernel *)av1_interp_filter_params_list[BILINEAR].filter_ptr; |
| assert(w && h); |
| |
| c[0] = vdup_n_u8((uint8_t)interp_kernel[phase_scaler][3]); |
| c[1] = vdup_n_u8((uint8_t)interp_kernel[phase_scaler][4]); |
| c[2] = vdup_n_u8( |
| (uint8_t)interp_kernel[(phase_scaler + 1 * step_q4) & SUBPEL_MASK][3]); |
| c[3] = vdup_n_u8( |
| (uint8_t)interp_kernel[(phase_scaler + 1 * step_q4) & SUBPEL_MASK][4]); |
| c[4] = vdup_n_u8( |
| (uint8_t)interp_kernel[(phase_scaler + 2 * step_q4) & SUBPEL_MASK][3]); |
| c[5] = vdup_n_u8( |
| (uint8_t)interp_kernel[(phase_scaler + 2 * step_q4) & SUBPEL_MASK][4]); |
| |
| d[6] = vdup_n_u8(0); |
| d[7] = vdup_n_u8(0); |
| |
| // horizontal 6x8 |
| do { |
| load_u8_8x8(src, src_stride, &s[0], &s[1], &s[2], &s[3], &s[4], &s[5], |
| &s[6], &s[7]); |
| src += 1; |
| transpose_elems_inplace_u8_8x8(&s[0], &s[1], &s[2], &s[3], &s[4], &s[5], |
| &s[6], &s[7]); |
| x = width_hor; |
| |
| do { |
| load_u8_8x8(src, src_stride, &s[1], &s[2], &s[3], &s[4], &s[5], &s[6], |
| &s[7], &s[8]); |
| src += 8; |
| transpose_elems_inplace_u8_8x8(&s[1], &s[2], &s[3], &s[4], &s[5], &s[6], |
| &s[7], &s[8]); |
| |
| // 00 10 20 30 40 50 60 70 |
| // 01 11 21 31 41 51 61 71 |
| // 02 12 22 32 42 52 62 72 |
| // 03 13 23 33 43 53 63 73 |
| // 04 14 24 34 44 54 64 74 |
| // 05 15 25 35 45 55 65 75 |
| d[0] = scale_filter_bilinear(&s[0], &c[0]); |
| d[1] = |
| scale_filter_bilinear(&s[(phase_scaler + 1 * step_q4) >> 4], &c[2]); |
| d[2] = |
| scale_filter_bilinear(&s[(phase_scaler + 2 * step_q4) >> 4], &c[4]); |
| d[3] = scale_filter_bilinear(&s[4], &c[0]); |
| d[4] = scale_filter_bilinear(&s[4 + ((phase_scaler + 1 * step_q4) >> 4)], |
| &c[2]); |
| d[5] = scale_filter_bilinear(&s[4 + ((phase_scaler + 2 * step_q4) >> 4)], |
| &c[4]); |
| |
| // 00 01 02 03 04 05 xx xx |
| // 10 11 12 13 14 15 xx xx |
| // 20 21 22 23 24 25 xx xx |
| // 30 31 32 33 34 35 xx xx |
| // 40 41 42 43 44 45 xx xx |
| // 50 51 52 53 54 55 xx xx |
| // 60 61 62 63 64 65 xx xx |
| // 70 71 72 73 74 75 xx xx |
| transpose_elems_inplace_u8_8x8(&d[0], &d[1], &d[2], &d[3], &d[4], &d[5], |
| &d[6], &d[7]); |
| // store 2 extra pixels |
| vst1_u8(t + 0 * stride_hor, d[0]); |
| vst1_u8(t + 1 * stride_hor, d[1]); |
| vst1_u8(t + 2 * stride_hor, d[2]); |
| vst1_u8(t + 3 * stride_hor, d[3]); |
| vst1_u8(t + 4 * stride_hor, d[4]); |
| vst1_u8(t + 5 * stride_hor, d[5]); |
| vst1_u8(t + 6 * stride_hor, d[6]); |
| vst1_u8(t + 7 * stride_hor, d[7]); |
| |
| s[0] = s[8]; |
| |
| t += 6; |
| x -= 6; |
| } while (x); |
| src += 8 * src_stride - 4 * width_hor / 3 - 1; |
| t += 7 * stride_hor + 2; |
| y -= 8; |
| } while (y); |
| |
| // vertical 8x6 |
| x = width_ver; |
| t = temp_buffer; |
| do { |
| load_u8_8x8(t, stride_hor, &s[0], &s[1], &s[2], &s[3], &s[4], &s[5], &s[6], |
| &s[7]); |
| t += stride_hor; |
| y = height_ver; |
| |
| do { |
| load_u8_8x8(t, stride_hor, &s[1], &s[2], &s[3], &s[4], &s[5], &s[6], |
| &s[7], &s[8]); |
| t += 8 * stride_hor; |
| |
| d[0] = scale_filter_bilinear(&s[0], &c[0]); |
| d[1] = |
| scale_filter_bilinear(&s[(phase_scaler + 1 * step_q4) >> 4], &c[2]); |
| d[2] = |
| scale_filter_bilinear(&s[(phase_scaler + 2 * step_q4) >> 4], &c[4]); |
| d[3] = scale_filter_bilinear(&s[4], &c[0]); |
| d[4] = scale_filter_bilinear(&s[4 + ((phase_scaler + 1 * step_q4) >> 4)], |
| &c[2]); |
| d[5] = scale_filter_bilinear(&s[4 + ((phase_scaler + 2 * step_q4) >> 4)], |
| &c[4]); |
| vst1_u8(dst + 0 * dst_stride, d[0]); |
| vst1_u8(dst + 1 * dst_stride, d[1]); |
| vst1_u8(dst + 2 * dst_stride, d[2]); |
| vst1_u8(dst + 3 * dst_stride, d[3]); |
| vst1_u8(dst + 4 * dst_stride, d[4]); |
| vst1_u8(dst + 5 * dst_stride, d[5]); |
| |
| s[0] = s[8]; |
| |
| dst += 6 * dst_stride; |
| y -= 6; |
| } while (y); |
| t -= stride_hor * (4 * height_ver / 3 + 1); |
| t += 8; |
| dst -= height_ver * dst_stride; |
| dst += 8; |
| x -= 8; |
| } while (x); |
| } |
| |
| static inline uint8x8_t scale_filter_8(const uint8x8_t *const s, |
| const int16x8_t filter) { |
| const int16x4_t filter_lo = vget_low_s16(filter); |
| const int16x4_t filter_hi = vget_high_s16(filter); |
| |
| int16x8_t ss0 = vreinterpretq_s16_u16(vmovl_u8(s[0])); |
| int16x8_t ss1 = vreinterpretq_s16_u16(vmovl_u8(s[1])); |
| int16x8_t ss2 = vreinterpretq_s16_u16(vmovl_u8(s[2])); |
| int16x8_t ss3 = vreinterpretq_s16_u16(vmovl_u8(s[3])); |
| int16x8_t ss4 = vreinterpretq_s16_u16(vmovl_u8(s[4])); |
| int16x8_t ss5 = vreinterpretq_s16_u16(vmovl_u8(s[5])); |
| int16x8_t ss6 = vreinterpretq_s16_u16(vmovl_u8(s[6])); |
| int16x8_t ss7 = vreinterpretq_s16_u16(vmovl_u8(s[7])); |
| |
| int16x8_t sum = vmulq_lane_s16(ss0, filter_lo, 0); |
| sum = vmlaq_lane_s16(sum, ss1, filter_lo, 1); |
| sum = vmlaq_lane_s16(sum, ss2, filter_lo, 2); |
| sum = vmlaq_lane_s16(sum, ss5, filter_hi, 1); |
| sum = vmlaq_lane_s16(sum, ss6, filter_hi, 2); |
| sum = vmlaq_lane_s16(sum, ss7, filter_hi, 3); |
| sum = vqaddq_s16(sum, vmulq_lane_s16(ss3, filter_lo, 3)); |
| sum = vqaddq_s16(sum, vmulq_lane_s16(ss4, filter_hi, 0)); |
| |
| return vqrshrun_n_s16(sum, FILTER_BITS); |
| } |
| |
| static inline void scale_plane_4_to_3_8tap(const uint8_t *src, |
| const int src_stride, uint8_t *dst, |
| const int dst_stride, const int w, |
| const int h, |
| const InterpKernel *const coef, |
| const int phase_scaler, |
| uint8_t *const temp_buffer) { |
| static const int step_q4 = 16 * 4 / 3; |
| const int width_hor = (w + 5) - ((w + 5) % 6); |
| const int stride_hor = width_hor + 2; // store 2 extra pixels |
| const int width_ver = (w + 7) & ~7; |
| // We need (SUBPEL_TAPS - 1) extra rows: (SUBPEL_TAPS / 2 - 1) extra rows |
| // above and (SUBPEL_TAPS / 2) extra rows below. |
| const int height_hor = (4 * h / 3 + SUBPEL_TAPS - 1 + 7) & ~7; |
| const int height_ver = (h + 5) - ((h + 5) % 6); |
| const int16x8_t filters0 = vld1q_s16( |
| (const int16_t *)&coef[(phase_scaler + 0 * step_q4) & SUBPEL_MASK]); |
| const int16x8_t filters1 = vld1q_s16( |
| (const int16_t *)&coef[(phase_scaler + 1 * step_q4) & SUBPEL_MASK]); |
| const int16x8_t filters2 = vld1q_s16( |
| (const int16_t *)&coef[(phase_scaler + 2 * step_q4) & SUBPEL_MASK]); |
| int x, y = height_hor; |
| uint8_t *t = temp_buffer; |
| uint8x8_t s[15], d[8]; |
| |
| assert(w > 0 && h > 0); |
| |
| src -= (SUBPEL_TAPS / 2 - 1) * src_stride + SUBPEL_TAPS / 2; |
| d[6] = vdup_n_u8(0); |
| d[7] = vdup_n_u8(0); |
| |
| // horizontal 6x8 |
| do { |
| load_u8_8x8(src + 1, src_stride, &s[0], &s[1], &s[2], &s[3], &s[4], &s[5], |
| &s[6], &s[7]); |
| transpose_elems_inplace_u8_8x8(&s[0], &s[1], &s[2], &s[3], &s[4], &s[5], |
| &s[6], &s[7]); |
| x = width_hor; |
| |
| do { |
| src += 8; |
| load_u8_8x8(src, src_stride, &s[7], &s[8], &s[9], &s[10], &s[11], &s[12], |
| &s[13], &s[14]); |
| transpose_elems_inplace_u8_8x8(&s[7], &s[8], &s[9], &s[10], &s[11], |
| &s[12], &s[13], &s[14]); |
| |
| // 00 10 20 30 40 50 60 70 |
| // 01 11 21 31 41 51 61 71 |
| // 02 12 22 32 42 52 62 72 |
| // 03 13 23 33 43 53 63 73 |
| // 04 14 24 34 44 54 64 74 |
| // 05 15 25 35 45 55 65 75 |
| d[0] = scale_filter_8(&s[0], filters0); |
| d[1] = scale_filter_8(&s[(phase_scaler + 1 * step_q4) >> 4], filters1); |
| d[2] = scale_filter_8(&s[(phase_scaler + 2 * step_q4) >> 4], filters2); |
| d[3] = scale_filter_8(&s[4], filters0); |
| d[4] = |
| scale_filter_8(&s[4 + ((phase_scaler + 1 * step_q4) >> 4)], filters1); |
| d[5] = |
| scale_filter_8(&s[4 + ((phase_scaler + 2 * step_q4) >> 4)], filters2); |
| |
| // 00 01 02 03 04 05 xx xx |
| // 10 11 12 13 14 15 xx xx |
| // 20 21 22 23 24 25 xx xx |
| // 30 31 32 33 34 35 xx xx |
| // 40 41 42 43 44 45 xx xx |
| // 50 51 52 53 54 55 xx xx |
| // 60 61 62 63 64 65 xx xx |
| // 70 71 72 73 74 75 xx xx |
| transpose_elems_inplace_u8_8x8(&d[0], &d[1], &d[2], &d[3], &d[4], &d[5], |
| &d[6], &d[7]); |
| // store 2 extra pixels |
| vst1_u8(t + 0 * stride_hor, d[0]); |
| vst1_u8(t + 1 * stride_hor, d[1]); |
| vst1_u8(t + 2 * stride_hor, d[2]); |
| vst1_u8(t + 3 * stride_hor, d[3]); |
| vst1_u8(t + 4 * stride_hor, d[4]); |
| vst1_u8(t + 5 * stride_hor, d[5]); |
| vst1_u8(t + 6 * stride_hor, d[6]); |
| vst1_u8(t + 7 * stride_hor, d[7]); |
| |
| s[0] = s[8]; |
| s[1] = s[9]; |
| s[2] = s[10]; |
| s[3] = s[11]; |
| s[4] = s[12]; |
| s[5] = s[13]; |
| s[6] = s[14]; |
| |
| t += 6; |
| x -= 6; |
| } while (x); |
| src += 8 * src_stride - 4 * width_hor / 3; |
| t += 7 * stride_hor + 2; |
| y -= 8; |
| } while (y); |
| |
| // vertical 8x6 |
| x = width_ver; |
| t = temp_buffer; |
| do { |
| load_u8_8x8(t, stride_hor, &s[0], &s[1], &s[2], &s[3], &s[4], &s[5], &s[6], |
| &s[7]); |
| t += 7 * stride_hor; |
| y = height_ver; |
| |
| do { |
| load_u8_8x8(t, stride_hor, &s[7], &s[8], &s[9], &s[10], &s[11], &s[12], |
| &s[13], &s[14]); |
| t += 8 * stride_hor; |
| |
| d[0] = scale_filter_8(&s[0], filters0); |
| d[1] = scale_filter_8(&s[(phase_scaler + 1 * step_q4) >> 4], filters1); |
| d[2] = scale_filter_8(&s[(phase_scaler + 2 * step_q4) >> 4], filters2); |
| d[3] = scale_filter_8(&s[4], filters0); |
| d[4] = |
| scale_filter_8(&s[4 + ((phase_scaler + 1 * step_q4) >> 4)], filters1); |
| d[5] = |
| scale_filter_8(&s[4 + ((phase_scaler + 2 * step_q4) >> 4)], filters2); |
| vst1_u8(dst + 0 * dst_stride, d[0]); |
| vst1_u8(dst + 1 * dst_stride, d[1]); |
| vst1_u8(dst + 2 * dst_stride, d[2]); |
| vst1_u8(dst + 3 * dst_stride, d[3]); |
| vst1_u8(dst + 4 * dst_stride, d[4]); |
| vst1_u8(dst + 5 * dst_stride, d[5]); |
| |
| s[0] = s[8]; |
| s[1] = s[9]; |
| s[2] = s[10]; |
| s[3] = s[11]; |
| s[4] = s[12]; |
| s[5] = s[13]; |
| s[6] = s[14]; |
| |
| dst += 6 * dst_stride; |
| y -= 6; |
| } while (y); |
| t -= stride_hor * (4 * height_ver / 3 + 7); |
| t += 8; |
| dst -= height_ver * dst_stride; |
| dst += 8; |
| x -= 8; |
| } while (x); |
| } |
| |
| // There's SIMD optimizations for 1/4, 1/2 and 3/4 downscaling in NEON. |
| static inline bool has_normative_scaler_neon(const int src_width, |
| const int src_height, |
| const int dst_width, |
| const int dst_height) { |
| const bool has_normative_scaler = |
| (2 * dst_width == src_width && 2 * dst_height == src_height) || |
| (4 * dst_width == src_width && 4 * dst_height == src_height) || |
| (4 * dst_width == 3 * src_width && 4 * dst_height == 3 * src_height); |
| |
| return has_normative_scaler; |
| } |
| |
| void av1_resize_and_extend_frame_neon(const YV12_BUFFER_CONFIG *src, |
| YV12_BUFFER_CONFIG *dst, |
| const InterpFilter filter, |
| const int phase, const int num_planes) { |
| assert(filter == BILINEAR || filter == EIGHTTAP_SMOOTH || |
| filter == EIGHTTAP_REGULAR); |
| |
| bool has_normative_scaler = |
| has_normative_scaler_neon(src->y_crop_width, src->y_crop_height, |
| dst->y_crop_width, dst->y_crop_height); |
| |
| if (num_planes > 1) { |
| has_normative_scaler = |
| has_normative_scaler && |
| has_normative_scaler_neon(src->uv_crop_width, src->uv_crop_height, |
| dst->uv_crop_width, dst->uv_crop_height); |
| } |
| |
| if (!has_normative_scaler) { |
| av1_resize_and_extend_frame_c(src, dst, filter, phase, num_planes); |
| return; |
| } |
| |
| // We use AOMMIN(num_planes, MAX_MB_PLANE) instead of num_planes to quiet |
| // the static analysis warnings. |
| int malloc_failed = 0; |
| for (int i = 0; i < AOMMIN(num_planes, MAX_MB_PLANE); ++i) { |
| const int is_uv = i > 0; |
| const int src_w = src->crop_widths[is_uv]; |
| const int src_h = src->crop_heights[is_uv]; |
| const int dst_w = dst->crop_widths[is_uv]; |
| const int dst_h = dst->crop_heights[is_uv]; |
| const int dst_y_w = (dst->crop_widths[0] + 1) & ~1; |
| const int dst_y_h = (dst->crop_heights[0] + 1) & ~1; |
| |
| if (2 * dst_w == src_w && 2 * dst_h == src_h) { |
| if (phase == 0) { |
| scale_plane_2_to_1_phase_0(src->buffers[i], src->strides[is_uv], |
| dst->buffers[i], dst->strides[is_uv], dst_w, |
| dst_h); |
| } else if (filter == BILINEAR) { |
| const int16_t c0 = av1_bilinear_filters[phase][3]; |
| const int16_t c1 = av1_bilinear_filters[phase][4]; |
| scale_plane_2_to_1_bilinear(src->buffers[i], src->strides[is_uv], |
| dst->buffers[i], dst->strides[is_uv], dst_w, |
| dst_h, c0, c1); |
| } else { |
| const int buffer_stride = (dst_y_w + 3) & ~3; |
| const int buffer_height = (2 * dst_y_h + SUBPEL_TAPS - 2 + 7) & ~7; |
| uint8_t *const temp_buffer = |
| (uint8_t *)malloc(buffer_stride * buffer_height); |
| if (!temp_buffer) { |
| malloc_failed = 1; |
| break; |
| } |
| const InterpKernel *interp_kernel = |
| (const InterpKernel *)av1_interp_filter_params_list[filter] |
| .filter_ptr; |
| scale_plane_2_to_1_6tap(src->buffers[i], src->strides[is_uv], |
| dst->buffers[i], dst->strides[is_uv], dst_w, |
| dst_h, interp_kernel[phase], temp_buffer); |
| free(temp_buffer); |
| } |
| } else if (4 * dst_w == src_w && 4 * dst_h == src_h) { |
| if (phase == 0) { |
| scale_plane_4_to_1_phase_0(src->buffers[i], src->strides[is_uv], |
| dst->buffers[i], dst->strides[is_uv], dst_w, |
| dst_h); |
| } else if (filter == BILINEAR) { |
| const int16_t c0 = av1_bilinear_filters[phase][3]; |
| const int16_t c1 = av1_bilinear_filters[phase][4]; |
| scale_plane_4_to_1_bilinear(src->buffers[i], src->strides[is_uv], |
| dst->buffers[i], dst->strides[is_uv], dst_w, |
| dst_h, c0, c1); |
| } else { |
| const int buffer_stride = (dst_y_w + 1) & ~1; |
| const int buffer_height = (4 * dst_y_h + SUBPEL_TAPS - 2 + 7) & ~7; |
| uint8_t *const temp_buffer = |
| (uint8_t *)malloc(buffer_stride * buffer_height); |
| if (!temp_buffer) { |
| malloc_failed = 1; |
| break; |
| } |
| const InterpKernel *interp_kernel = |
| (const InterpKernel *)av1_interp_filter_params_list[filter] |
| .filter_ptr; |
| scale_plane_4_to_1_6tap(src->buffers[i], src->strides[is_uv], |
| dst->buffers[i], dst->strides[is_uv], dst_w, |
| dst_h, interp_kernel[phase], temp_buffer); |
| free(temp_buffer); |
| } |
| } else { |
| assert(4 * dst_w == 3 * src_w && 4 * dst_h == 3 * src_h); |
| // 4 to 3 |
| const int buffer_stride = (dst_y_w + 5) - ((dst_y_w + 5) % 6) + 2; |
| const int buffer_height = (4 * dst_y_h / 3 + SUBPEL_TAPS - 1 + 7) & ~7; |
| uint8_t *const temp_buffer = |
| (uint8_t *)malloc(buffer_stride * buffer_height); |
| if (!temp_buffer) { |
| malloc_failed = 1; |
| break; |
| } |
| if (filter == BILINEAR) { |
| scale_plane_4_to_3_bilinear(src->buffers[i], src->strides[is_uv], |
| dst->buffers[i], dst->strides[is_uv], dst_w, |
| dst_h, phase, temp_buffer); |
| } else { |
| const InterpKernel *interp_kernel = |
| (const InterpKernel *)av1_interp_filter_params_list[filter] |
| .filter_ptr; |
| scale_plane_4_to_3_8tap(src->buffers[i], src->strides[is_uv], |
| dst->buffers[i], dst->strides[is_uv], dst_w, |
| dst_h, interp_kernel, phase, temp_buffer); |
| } |
| free(temp_buffer); |
| } |
| } |
| |
| if (malloc_failed) { |
| av1_resize_and_extend_frame_c(src, dst, filter, phase, num_planes); |
| } else { |
| aom_extend_frame_borders(dst, num_planes); |
| } |
| } |