| /* |
| * 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 "./aom_dsp_rtcd.h" |
| #include "aom_ports/mem.h" |
| |
| // delta = 4/16 * clamp(a - o, -s, s) + 1/16 * clamp(b - o, -s, s) + |
| // 3/16 * clamp(c - o, -s, s) + 3/16 * clamp(d - o, -s, s) + |
| // 1/16 * clamp(e - o, -s, s) + 4/16 * clamp(f - o, -s, s) |
| SIMD_INLINE v128 calc_delta(v128 o, v128 a, v128 b, v128 c, v128 d, v128 e, |
| v128 f, v128 sp, v128 sm) { |
| // The difference will be 9 bit, offset by 128 so we can use saturated |
| // sub to avoid going to 16 bit temporarily before "strength" clipping. |
| const v128 c128 = v128_dup_8(128); |
| const v128 x = v128_add_8(c128, o); |
| const v128 c8 = v128_dup_8(8); |
| const v128 tmp = v128_add_8( |
| v128_max_s8(v128_min_s8(v128_ssub_s8(v128_add_8(c128, c), x), sp), sm), |
| v128_max_s8(v128_min_s8(v128_ssub_s8(v128_add_8(c128, d), x), sp), sm)); |
| const v128 delta = v128_add_8( |
| v128_add_8( |
| v128_shl_8( |
| v128_add_8( |
| v128_max_s8( |
| v128_min_s8(v128_ssub_s8(v128_add_8(c128, a), x), sp), |
| sm), |
| v128_max_s8( |
| v128_min_s8(v128_ssub_s8(v128_add_8(c128, f), x), sp), |
| sm)), |
| 2), |
| v128_add_8( |
| v128_max_s8(v128_min_s8(v128_ssub_s8(v128_add_8(c128, b), x), sp), |
| sm), |
| v128_max_s8(v128_min_s8(v128_ssub_s8(v128_add_8(c128, e), x), sp), |
| sm))), |
| v128_add_8(v128_add_8(tmp, tmp), tmp)); |
| return v128_add_8( |
| o, |
| v128_shr_s8( |
| v128_add_8(c8, v128_add_8(delta, v128_cmplt_s8(delta, v128_zero()))), |
| 4)); |
| } |
| |
| // Process blocks of width 8, two lines at a time, 8 bit. |
| static void clpf_block8(const uint8_t *src, uint8_t *dst, int sstride, |
| int dstride, int x0, int y0, int sizey, int width, |
| int height, unsigned int strength) { |
| const int bottom = height - 2 - y0; |
| const int right = width - 8 - x0; |
| const v128 sp = v128_dup_8(strength); |
| const v128 sm = v128_dup_8(-(int)strength); |
| DECLARE_ALIGNED(16, static const uint64_t, |
| b_shuff[]) = { 0x0504030201000000LL, 0x0d0c0b0a09080808LL }; |
| DECLARE_ALIGNED(16, static const uint64_t, |
| c_shuff[]) = { 0x0605040302010000LL, 0x0e0d0c0b0a090808LL }; |
| DECLARE_ALIGNED(16, static const uint64_t, |
| d_shuff[]) = { 0x0707060504030201LL, 0x0f0f0e0d0c0b0a09LL }; |
| DECLARE_ALIGNED(16, static const uint64_t, |
| e_shuff[]) = { 0x0707070605040302LL, 0x0f0f0f0e0d0c0b0aLL }; |
| int y; |
| |
| dst += x0 + y0 * dstride; |
| src += x0 + y0 * sstride; |
| |
| for (y = 0; y < sizey; y += 2) { |
| const v64 l1 = v64_load_aligned(src); |
| const v64 l2 = v64_load_aligned(src + sstride); |
| v128 o = v128_from_v64(l1, l2); |
| const v128 a = |
| v128_from_v64(v64_load_aligned(src - (y != -y0) * sstride), l1); |
| const v128 f = v128_from_v64( |
| l2, v64_load_aligned(src + ((y != bottom) + 1) * sstride)); |
| v128 b, c, d, e; |
| |
| if (x0) { |
| b = v128_from_v64(v64_load_unaligned(src - 2), |
| v64_load_unaligned(src - 2 + sstride)); |
| c = v128_from_v64(v64_load_unaligned(src - 1), |
| v64_load_unaligned(src - 1 + sstride)); |
| } else { // Left clipping |
| b = v128_shuffle_8(o, v128_load_aligned(b_shuff)); |
| c = v128_shuffle_8(o, v128_load_aligned(c_shuff)); |
| } |
| if (right) { |
| d = v128_from_v64(v64_load_unaligned(src + 1), |
| v64_load_unaligned(src + 1 + sstride)); |
| e = v128_from_v64(v64_load_unaligned(src + 2), |
| v64_load_unaligned(src + 2 + sstride)); |
| } else { // Right clipping |
| d = v128_shuffle_8(o, v128_load_aligned(d_shuff)); |
| e = v128_shuffle_8(o, v128_load_aligned(e_shuff)); |
| } |
| |
| o = calc_delta(o, a, b, c, d, e, f, sp, sm); |
| v64_store_aligned(dst, v128_high_v64(o)); |
| v64_store_aligned(dst + dstride, v128_low_v64(o)); |
| src += sstride * 2; |
| dst += dstride * 2; |
| } |
| } |
| |
| // Process blocks of width 4, four lines at a time, 8 bit. |
| static void clpf_block4(const uint8_t *src, uint8_t *dst, int sstride, |
| int dstride, int x0, int y0, int sizey, int width, |
| int height, unsigned int strength) { |
| const v128 sp = v128_dup_8(strength); |
| const v128 sm = v128_dup_8(-(int)strength); |
| const int right = width - 4 - x0; |
| const int bottom = height - 4 - y0; |
| DECLARE_ALIGNED(16, static const uint64_t, |
| b_shuff[]) = { 0x0504040401000000LL, 0x0d0c0c0c09080808LL }; |
| DECLARE_ALIGNED(16, static const uint64_t, |
| c_shuff[]) = { 0x0605040402010000LL, 0x0e0d0c0c0a090808LL }; |
| DECLARE_ALIGNED(16, static const uint64_t, |
| d_shuff[]) = { 0x0707060503030201LL, 0x0f0f0e0d0b0b0a09LL }; |
| DECLARE_ALIGNED(16, static const uint64_t, |
| e_shuff[]) = { 0x0707070603030302LL, 0x0f0f0f0e0b0b0b0aLL }; |
| int y; |
| |
| dst += x0 + y0 * dstride; |
| src += x0 + y0 * sstride; |
| |
| for (y = 0; y < sizey; y += 4) { |
| const uint32_t l0 = u32_load_aligned(src - (y != -y0) * sstride); |
| const uint32_t l1 = u32_load_aligned(src); |
| const uint32_t l2 = u32_load_aligned(src + sstride); |
| const uint32_t l3 = u32_load_aligned(src + 2 * sstride); |
| const uint32_t l4 = u32_load_aligned(src + 3 * sstride); |
| const uint32_t l5 = u32_load_aligned(src + ((y != bottom) + 3) * sstride); |
| v128 o = v128_from_32(l1, l2, l3, l4); |
| const v128 a = v128_from_32(l0, l1, l2, l3); |
| const v128 f = v128_from_32(l2, l3, l4, l5); |
| v128 b, c, d, e; |
| |
| if (x0) { |
| b = v128_from_32(u32_load_unaligned(src - 2), |
| u32_load_unaligned(src + sstride - 2), |
| u32_load_unaligned(src + 2 * sstride - 2), |
| u32_load_unaligned(src + 3 * sstride - 2)); |
| c = v128_from_32(u32_load_unaligned(src - 1), |
| u32_load_unaligned(src + sstride - 1), |
| u32_load_unaligned(src + 2 * sstride - 1), |
| u32_load_unaligned(src + 3 * sstride - 1)); |
| } else { // Left clipping |
| b = v128_shuffle_8(o, v128_load_aligned(b_shuff)); |
| c = v128_shuffle_8(o, v128_load_aligned(c_shuff)); |
| } |
| if (right) { |
| d = v128_from_32(u32_load_unaligned(src + 1), |
| u32_load_unaligned(src + sstride + 1), |
| u32_load_unaligned(src + 2 * sstride + 1), |
| u32_load_unaligned(src + 3 * sstride + 1)); |
| e = v128_from_32(u32_load_unaligned(src + 2 * !!right), |
| u32_load_unaligned(src + sstride + 2), |
| u32_load_unaligned(src + 2 * sstride + 2), |
| u32_load_unaligned(src + 3 * sstride + 2)); |
| } else { // Right clipping |
| d = v128_shuffle_8(o, v128_load_aligned(d_shuff)); |
| e = v128_shuffle_8(o, v128_load_aligned(e_shuff)); |
| } |
| |
| o = calc_delta(o, a, b, c, d, e, f, sp, sm); |
| u32_store_aligned(dst, v128_low_u32(v128_shr_n_byte(o, 12))); |
| u32_store_aligned(dst + dstride, v128_low_u32(v128_shr_n_byte(o, 8))); |
| u32_store_aligned(dst + 2 * dstride, v128_low_u32(v128_shr_n_byte(o, 4))); |
| u32_store_aligned(dst + 3 * dstride, v128_low_u32(o)); |
| |
| dst += 4 * dstride; |
| src += 4 * sstride; |
| } |
| } |
| |
| void SIMD_FUNC(aom_clpf_block)(const uint8_t *src, uint8_t *dst, int sstride, |
| int dstride, int x0, int y0, int sizex, |
| int sizey, int width, int height, |
| unsigned int strength) { |
| if ((sizex != 4 && sizex != 8) || ((sizey & 3) && sizex == 4)) { |
| // Fallback to C for odd sizes: |
| // * block widths not 4 or 8 |
| // * block heights not a multiple of 4 if the block width is 4 |
| aom_clpf_block_c(src, dst, sstride, dstride, x0, y0, sizex, sizey, width, |
| height, strength); |
| } else { |
| (sizex == 4 ? clpf_block4 : clpf_block8)(src, dst, sstride, dstride, x0, y0, |
| sizey, width, height, strength); |
| } |
| } |
| |
| #if CONFIG_AOM_HIGHBITDEPTH |
| // delta = 4/16 * clamp(a - o, -s, s) + 1/16 * clamp(b - o, -s, s) + |
| // 3/16 * clamp(c - o, -s, s) + 3/16 * clamp(d - o, -s, s) + |
| // 1/16 * clamp(e - o, -s, s) + 4/16 * clamp(f - o, -s, s) |
| SIMD_INLINE v128 calc_delta_hbd(v128 o, v128 a, v128 b, v128 c, v128 d, v128 e, |
| v128 f, v128 sp, v128 sm) { |
| const v128 c8 = v128_dup_16(8); |
| const v128 tmp = |
| v128_add_16(v128_max_s16(v128_min_s16(v128_sub_16(c, o), sp), sm), |
| v128_max_s16(v128_min_s16(v128_sub_16(d, o), sp), sm)); |
| const v128 delta = v128_add_16( |
| v128_add_16( |
| v128_shl_16( |
| v128_add_16( |
| v128_max_s16(v128_min_s16(v128_sub_16(a, o), sp), sm), |
| v128_max_s16(v128_min_s16(v128_sub_16(f, o), sp), sm)), |
| 2), |
| v128_add_16(v128_max_s16(v128_min_s16(v128_sub_16(b, o), sp), sm), |
| v128_max_s16(v128_min_s16(v128_sub_16(e, o), sp), sm))), |
| v128_add_16(v128_add_16(tmp, tmp), tmp)); |
| return v128_add_16( |
| o, v128_shr_s16( |
| v128_add_16( |
| c8, v128_add_16(delta, v128_cmplt_s16(delta, v128_zero()))), |
| 4)); |
| } |
| |
| static void calc_delta_hbd4(v128 o, v128 a, v128 b, v128 c, v128 d, v128 e, |
| v128 f, uint16_t *dst, v128 sp, v128 sm, |
| int dstride) { |
| o = calc_delta_hbd(o, a, b, c, d, e, f, sp, sm); |
| v64_store_aligned(dst, v128_high_v64(o)); |
| v64_store_aligned(dst + dstride, v128_low_v64(o)); |
| } |
| |
| static void calc_delta_hbd8(v128 o, v128 a, v128 b, v128 c, v128 d, v128 e, |
| v128 f, uint16_t *dst, v128 sp, v128 sm) { |
| v128_store_aligned(dst, calc_delta_hbd(o, a, b, c, d, e, f, sp, sm)); |
| } |
| |
| // Process blocks of width 4, two lines at time. |
| SIMD_INLINE void clpf_block_hbd4(const uint16_t *src, uint16_t *dst, |
| int sstride, int dstride, int x0, int y0, |
| int sizey, int width, int height, |
| unsigned int strength) { |
| const v128 sp = v128_dup_16(strength); |
| const v128 sm = v128_dup_16(-(int)strength); |
| const int right = width - 4 - x0; |
| const int bottom = height - 2 - y0; |
| DECLARE_ALIGNED(16, static const uint64_t, |
| b_shuff[]) = { 0x0302010001000100LL, 0x0b0a090809080908LL }; |
| DECLARE_ALIGNED(16, static const uint64_t, |
| c_shuff[]) = { 0x0504030201000100LL, 0x0d0c0b0a09080908LL }; |
| DECLARE_ALIGNED(16, static const uint64_t, |
| d_shuff[]) = { 0x0706070605040302LL, 0x0f0e0f0e0d0c0b0aLL }; |
| DECLARE_ALIGNED(16, static const uint64_t, |
| e_shuff[]) = { 0x0706070607060504LL, 0x0f0e0f0e0f0e0d0cLL }; |
| int y; |
| |
| dst += x0 + y0 * dstride; |
| src += x0 + y0 * sstride; |
| |
| for (y = 0; y < sizey; y += 2) { |
| const v64 l1 = v64_load_aligned(src); |
| const v64 l2 = v64_load_aligned(src + sstride); |
| v128 o = v128_from_v64(l1, l2); |
| const v128 a = |
| v128_from_v64(v64_load_aligned(src - (y != -y0) * sstride), l1); |
| const v128 f = v128_from_v64( |
| l2, v64_load_aligned(src + ((y != bottom) + 1) * sstride)); |
| v128 b, c, d, e; |
| |
| if (x0) { |
| b = v128_from_v64(v64_load_unaligned(src - 2), |
| v64_load_unaligned(src - 2 + sstride)); |
| c = v128_from_v64(v64_load_unaligned(src - 1), |
| v64_load_unaligned(src - 1 + sstride)); |
| } else { // Left clipping |
| b = v128_shuffle_8(o, v128_load_aligned(b_shuff)); |
| c = v128_shuffle_8(o, v128_load_aligned(c_shuff)); |
| } |
| if (right) { |
| d = v128_from_v64(v64_load_unaligned(src + 1), |
| v64_load_unaligned(src + 1 + sstride)); |
| e = v128_from_v64(v64_load_unaligned(src + 2), |
| v64_load_unaligned(src + 2 + sstride)); |
| } else { // Right clipping |
| d = v128_shuffle_8(o, v128_load_aligned(d_shuff)); |
| e = v128_shuffle_8(o, v128_load_aligned(e_shuff)); |
| } |
| calc_delta_hbd4(o, a, b, c, d, e, f, dst, sp, sm, dstride); |
| src += sstride * 2; |
| dst += dstride * 2; |
| } |
| } |
| |
| // The most simple case. Start here if you need to understand the functions. |
| SIMD_INLINE void clpf_block_hbd(const uint16_t *src, uint16_t *dst, int sstride, |
| int dstride, int x0, int y0, int sizey, |
| int width, int height, unsigned int strength) { |
| const v128 sp = v128_dup_16(strength); |
| const v128 sm = v128_dup_16(-(int)strength); |
| const int right = width - 8 - x0; |
| const int bottom = height - 2 - y0; |
| DECLARE_ALIGNED(16, static const uint64_t, |
| b_shuff[]) = { 0x0302010001000100LL, 0x0b0a090807060504LL }; |
| DECLARE_ALIGNED(16, static const uint64_t, |
| c_shuff[]) = { 0x0504030201000100LL, 0x0d0c0b0a09080706LL }; |
| DECLARE_ALIGNED(16, static const uint64_t, |
| d_shuff[]) = { 0x0908070605040302LL, 0x0f0e0f0e0d0c0b0aLL }; |
| DECLARE_ALIGNED(16, static const uint64_t, |
| e_shuff[]) = { 0x0b0a090807060504LL, 0x0f0e0f0e0f0e0d0cLL }; |
| int y; |
| |
| dst += x0 + y0 * dstride; |
| src += x0 + y0 * sstride; |
| |
| // Read 8 set of pixels at a time. Clipping along upper and lower |
| // edges is handled by reading the upper or lower line twice. |
| // Clipping along the left and right edges is handled by shuffle |
| // instructions doing shift and pad. |
| for (y = 0; y < sizey; y++) { |
| const v128 o = v128_load_aligned(src); |
| const v128 a = v128_load_aligned(src - (y != -y0) * sstride); |
| const v128 f = v128_load_aligned(src + (y - 1 != bottom) * sstride); |
| v128 b, c, d, e; |
| |
| if (x0) { |
| b = v128_load_unaligned(src - 2); |
| c = v128_load_unaligned(src - 1); |
| } else { // Left clipping |
| b = v128_shuffle_8(o, v128_load_aligned(b_shuff)); |
| c = v128_shuffle_8(o, v128_load_aligned(c_shuff)); |
| } |
| if (right) { |
| d = v128_load_unaligned(src + 1); |
| e = v128_load_unaligned(src + 2); |
| } else { // Right clipping |
| d = v128_shuffle_8(o, v128_load_aligned(d_shuff)); |
| e = v128_shuffle_8(o, v128_load_aligned(e_shuff)); |
| } |
| calc_delta_hbd8(o, a, b, c, d, e, f, dst, sp, sm); |
| src += sstride; |
| dst += dstride; |
| } |
| } |
| |
| void SIMD_FUNC(aom_clpf_block_hbd)(const uint16_t *src, uint16_t *dst, |
| int sstride, int dstride, int x0, int y0, |
| int sizex, int sizey, int width, int height, |
| unsigned int strength) { |
| if ((sizex != 4 && sizex != 8) || ((sizey & 1) && sizex == 4)) { |
| // Fallback to C for odd sizes: |
| // * block width not 4 or 8 |
| // * block heights not a multiple of 2 if the block width is 4 |
| aom_clpf_block_hbd_c(src, dst, sstride, dstride, x0, y0, sizex, sizey, |
| width, height, strength); |
| } else { |
| (sizex == 4 ? clpf_block_hbd4 : clpf_block_hbd)( |
| src, dst, sstride, dstride, x0, y0, sizey, width, height, strength); |
| } |
| } |
| #endif |
