11e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora// Copyright 2011 Google Inc. All Rights Reserved. 21e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora// 30406ce1417f76f2034833414dcecc9f56253640cVikas Arora// Use of this source code is governed by a BSD-style license 40406ce1417f76f2034833414dcecc9f56253640cVikas Arora// that can be found in the COPYING file in the root of the source 50406ce1417f76f2034833414dcecc9f56253640cVikas Arora// tree. An additional intellectual property rights grant can be found 60406ce1417f76f2034833414dcecc9f56253640cVikas Arora// in the file PATENTS. All contributing project authors may 70406ce1417f76f2034833414dcecc9f56253640cVikas Arora// be found in the AUTHORS file in the root of the source tree. 81e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora// ----------------------------------------------------------------------------- 91e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora// 101e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora// NEON version of YUV to RGB upsampling functions. 111e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora// 121e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora// Author: mans@mansr.com (Mans Rullgard) 131e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora// Based on SSE code by: somnath@google.com (Somnath Banerjee) 141e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 151e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#include "./dsp.h" 161e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 171e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#if defined(WEBP_USE_NEON) 181e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 191e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#include <assert.h> 201e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#include <arm_neon.h> 211e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#include <string.h> 22af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora#include "./neon.h" 231e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#include "./yuv.h" 241e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 251e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#ifdef FANCY_UPSAMPLING 261e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 278b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora//----------------------------------------------------------------------------- 288b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora// U/V upsampling 298b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora 301e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora// Loads 9 pixels each from rows r1 and r2 and generates 16 pixels. 311e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#define UPSAMPLE_16PIXELS(r1, r2, out) { \ 321e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora uint8x8_t a = vld1_u8(r1); \ 331e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora uint8x8_t b = vld1_u8(r1 + 1); \ 341e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora uint8x8_t c = vld1_u8(r2); \ 351e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora uint8x8_t d = vld1_u8(r2 + 1); \ 361e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora \ 371e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora uint16x8_t al = vshll_n_u8(a, 1); \ 381e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora uint16x8_t bl = vshll_n_u8(b, 1); \ 391e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora uint16x8_t cl = vshll_n_u8(c, 1); \ 401e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora uint16x8_t dl = vshll_n_u8(d, 1); \ 411e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora \ 421e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora uint8x8_t diag1, diag2; \ 431e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora uint16x8_t sl; \ 441e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora \ 451e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora /* a + b + c + d */ \ 461e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora sl = vaddl_u8(a, b); \ 471e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora sl = vaddw_u8(sl, c); \ 481e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora sl = vaddw_u8(sl, d); \ 491e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora \ 501e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora al = vaddq_u16(sl, al); /* 3a + b + c + d */ \ 511e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora bl = vaddq_u16(sl, bl); /* a + 3b + c + d */ \ 521e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora \ 531e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora al = vaddq_u16(al, dl); /* 3a + b + c + 3d */ \ 541e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora bl = vaddq_u16(bl, cl); /* a + 3b + 3c + d */ \ 551e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora \ 561e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora diag2 = vshrn_n_u16(al, 3); \ 571e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora diag1 = vshrn_n_u16(bl, 3); \ 581e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora \ 591e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora a = vrhadd_u8(a, diag1); \ 601e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora b = vrhadd_u8(b, diag2); \ 611e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora c = vrhadd_u8(c, diag2); \ 621e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora d = vrhadd_u8(d, diag1); \ 631e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora \ 641e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora { \ 65af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora uint8x8x2_t a_b, c_d; \ 66af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora INIT_VECTOR2(a_b, a, b); \ 67af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora INIT_VECTOR2(c_d, c, d); \ 681e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora vst2_u8(out, a_b); \ 691e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora vst2_u8(out + 32, c_d); \ 701e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora } \ 711e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora} 721e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 731e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora// Turn the macro into a function for reducing code-size when non-critical 741e7bf8805bd030c19924a5306837ecd72c295751Vikas Arorastatic void Upsample16Pixels(const uint8_t *r1, const uint8_t *r2, 751e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora uint8_t *out) { 761e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora UPSAMPLE_16PIXELS(r1, r2, out); 771e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora} 781e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 791e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#define UPSAMPLE_LAST_BLOCK(tb, bb, num_pixels, out) { \ 801e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora uint8_t r1[9], r2[9]; \ 811e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora memcpy(r1, (tb), (num_pixels)); \ 821e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora memcpy(r2, (bb), (num_pixels)); \ 831e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora /* replicate last byte */ \ 841e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora memset(r1 + (num_pixels), r1[(num_pixels) - 1], 9 - (num_pixels)); \ 851e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora memset(r2 + (num_pixels), r2[(num_pixels) - 1], 9 - (num_pixels)); \ 861e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora Upsample16Pixels(r1, r2, out); \ 871e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora} 881e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 898b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora//----------------------------------------------------------------------------- 908b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora// YUV->RGB conversion 911e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 928b720228d581a84fd173b6dcb2fa295b59db489aVikas Arorastatic const int16_t kCoeffs[4] = { kYScale, kVToR, kUToG, kVToG }; 931e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 94af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora#define v255 vdup_n_u8(255) 951e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 968b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora#define STORE_Rgb(out, r, g, b) do { \ 97af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora uint8x8x3_t r_g_b; \ 98af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora INIT_VECTOR3(r_g_b, r, g, b); \ 991e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora vst3_u8(out, r_g_b); \ 1001e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora} while (0) 1011e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 1028b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora#define STORE_Bgr(out, r, g, b) do { \ 103af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora uint8x8x3_t b_g_r; \ 104af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora INIT_VECTOR3(b_g_r, b, g, r); \ 1051e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora vst3_u8(out, b_g_r); \ 1061e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora} while (0) 1071e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 1088b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora#define STORE_Rgba(out, r, g, b) do { \ 109af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora uint8x8x4_t r_g_b_v255; \ 110af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora INIT_VECTOR4(r_g_b_v255, r, g, b, v255); \ 1111e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora vst4_u8(out, r_g_b_v255); \ 1121e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora} while (0) 1131e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 1148b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora#define STORE_Bgra(out, r, g, b) do { \ 115af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora uint8x8x4_t b_g_r_v255; \ 116af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora INIT_VECTOR4(b_g_r_v255, b, g, r, v255); \ 1171e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora vst4_u8(out, b_g_r_v255); \ 1181e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora} while (0) 1191e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 1208b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora#define CONVERT8(FMT, XSTEP, N, src_y, src_uv, out, cur_x) { \ 1218b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora int i; \ 1228b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora for (i = 0; i < N; i += 8) { \ 1238b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora const int off = ((cur_x) + i) * XSTEP; \ 1248b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora uint8x8_t y = vld1_u8((src_y) + (cur_x) + i); \ 1258b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora uint8x8_t u = vld1_u8((src_uv) + i); \ 1268b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora uint8x8_t v = vld1_u8((src_uv) + i + 16); \ 1278b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora const int16x8_t yy = vreinterpretq_s16_u16(vsubl_u8(y, u16)); \ 1288b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora const int16x8_t uu = vreinterpretq_s16_u16(vsubl_u8(u, u128)); \ 1298b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora const int16x8_t vv = vreinterpretq_s16_u16(vsubl_u8(v, u128)); \ 1308b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora int32x4_t yl = vmull_lane_s16(vget_low_s16(yy), cf16, 0); \ 1318b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora int32x4_t yh = vmull_lane_s16(vget_high_s16(yy), cf16, 0); \ 1328b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora const int32x4_t rl = vmlal_lane_s16(yl, vget_low_s16(vv), cf16, 1);\ 1338b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora const int32x4_t rh = vmlal_lane_s16(yh, vget_high_s16(vv), cf16, 1);\ 1348b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora int32x4_t gl = vmlsl_lane_s16(yl, vget_low_s16(uu), cf16, 2); \ 1358b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora int32x4_t gh = vmlsl_lane_s16(yh, vget_high_s16(uu), cf16, 2); \ 1368b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora const int32x4_t bl = vmovl_s16(vget_low_s16(uu)); \ 1378b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora const int32x4_t bh = vmovl_s16(vget_high_s16(uu)); \ 1388b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora gl = vmlsl_lane_s16(gl, vget_low_s16(vv), cf16, 3); \ 1398b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora gh = vmlsl_lane_s16(gh, vget_high_s16(vv), cf16, 3); \ 1408b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora yl = vmlaq_lane_s32(yl, bl, cf32, 0); \ 1418b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora yh = vmlaq_lane_s32(yh, bh, cf32, 0); \ 1428b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora /* vrshrn_n_s32() already incorporates the rounding constant */ \ 1438b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora y = vqmovun_s16(vcombine_s16(vrshrn_n_s32(rl, YUV_FIX2), \ 1448b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora vrshrn_n_s32(rh, YUV_FIX2))); \ 1458b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora u = vqmovun_s16(vcombine_s16(vrshrn_n_s32(gl, YUV_FIX2), \ 1468b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora vrshrn_n_s32(gh, YUV_FIX2))); \ 1478b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora v = vqmovun_s16(vcombine_s16(vrshrn_n_s32(yl, YUV_FIX2), \ 1488b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora vrshrn_n_s32(yh, YUV_FIX2))); \ 1498b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora STORE_ ## FMT(out + off, y, u, v); \ 1508b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora } \ 1518b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora} 1528b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora 1538b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora#define CONVERT1(FUNC, XSTEP, N, src_y, src_uv, rgb, cur_x) { \ 1541e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora int i; \ 1551e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora for (i = 0; i < N; i++) { \ 1568b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora const int off = ((cur_x) + i) * XSTEP; \ 1578b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora const int y = src_y[(cur_x) + i]; \ 1588b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora const int u = (src_uv)[i]; \ 1598b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora const int v = (src_uv)[i + 16]; \ 1608b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora FUNC(y, u, v, rgb + off); \ 1611e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora } \ 1621e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora} 1631e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 1641e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#define CONVERT2RGB_8(FMT, XSTEP, top_y, bottom_y, uv, \ 1651e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora top_dst, bottom_dst, cur_x, len) { \ 1668b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora CONVERT8(FMT, XSTEP, len, top_y, uv, top_dst, cur_x) \ 1678b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora if (bottom_y != NULL) { \ 1681e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora CONVERT8(FMT, XSTEP, len, bottom_y, (uv) + 32, bottom_dst, cur_x) \ 1691e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora } \ 1701e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora} 1711e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 1728b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora#define CONVERT2RGB_1(FUNC, XSTEP, top_y, bottom_y, uv, \ 1731e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora top_dst, bottom_dst, cur_x, len) { \ 1748b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora CONVERT1(FUNC, XSTEP, len, top_y, uv, top_dst, cur_x); \ 1758b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora if (bottom_y != NULL) { \ 1768b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora CONVERT1(FUNC, XSTEP, len, bottom_y, (uv) + 32, bottom_dst, cur_x); \ 1771e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora } \ 1781e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora} 1791e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 1801e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#define NEON_UPSAMPLE_FUNC(FUNC_NAME, FMT, XSTEP) \ 1811e7bf8805bd030c19924a5306837ecd72c295751Vikas Arorastatic void FUNC_NAME(const uint8_t *top_y, const uint8_t *bottom_y, \ 1821e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora const uint8_t *top_u, const uint8_t *top_v, \ 1831e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora const uint8_t *cur_u, const uint8_t *cur_v, \ 1841e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora uint8_t *top_dst, uint8_t *bottom_dst, int len) { \ 1851e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora int block; \ 1861e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora /* 16 byte aligned array to cache reconstructed u and v */ \ 1871e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora uint8_t uv_buf[2 * 32 + 15]; \ 1881e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora uint8_t *const r_uv = (uint8_t*)((uintptr_t)(uv_buf + 15) & ~15); \ 1891e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora const int uv_len = (len + 1) >> 1; \ 1901e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora /* 9 pixels must be read-able for each block */ \ 1911e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora const int num_blocks = (uv_len - 1) >> 3; \ 1921e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora const int leftover = uv_len - num_blocks * 8; \ 1931e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora const int last_pos = 1 + 16 * num_blocks; \ 1941e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora \ 1951e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora const int u_diag = ((top_u[0] + cur_u[0]) >> 1) + 1; \ 1961e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora const int v_diag = ((top_v[0] + cur_v[0]) >> 1) + 1; \ 1971e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora \ 1988b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora const int16x4_t cf16 = vld1_s16(kCoeffs); \ 199af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora const int32x2_t cf32 = vdup_n_s32(kUToB); \ 200af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora const uint8x8_t u16 = vdup_n_u8(16); \ 201af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora const uint8x8_t u128 = vdup_n_u8(128); \ 2021e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora \ 2031e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora /* Treat the first pixel in regular way */ \ 2048b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora assert(top_y != NULL); \ 2058b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora { \ 2061e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora const int u0 = (top_u[0] + u_diag) >> 1; \ 2071e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora const int v0 = (top_v[0] + v_diag) >> 1; \ 2081e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora VP8YuvTo ## FMT(top_y[0], u0, v0, top_dst); \ 2091e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora } \ 2108b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora if (bottom_y != NULL) { \ 2111e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora const int u0 = (cur_u[0] + u_diag) >> 1; \ 2121e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora const int v0 = (cur_v[0] + v_diag) >> 1; \ 2131e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora VP8YuvTo ## FMT(bottom_y[0], u0, v0, bottom_dst); \ 2141e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora } \ 2151e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora \ 2161e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora for (block = 0; block < num_blocks; ++block) { \ 2171e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora UPSAMPLE_16PIXELS(top_u, cur_u, r_uv); \ 2181e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora UPSAMPLE_16PIXELS(top_v, cur_v, r_uv + 16); \ 2191e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora CONVERT2RGB_8(FMT, XSTEP, top_y, bottom_y, r_uv, \ 2201e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora top_dst, bottom_dst, 16 * block + 1, 16); \ 2211e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora top_u += 8; \ 2221e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora cur_u += 8; \ 2231e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora top_v += 8; \ 2241e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora cur_v += 8; \ 2251e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora } \ 2261e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora \ 2271e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora UPSAMPLE_LAST_BLOCK(top_u, cur_u, leftover, r_uv); \ 2281e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora UPSAMPLE_LAST_BLOCK(top_v, cur_v, leftover, r_uv + 16); \ 2298b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora CONVERT2RGB_1(VP8YuvTo ## FMT, XSTEP, top_y, bottom_y, r_uv, \ 2301e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora top_dst, bottom_dst, last_pos, len - last_pos); \ 2311e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora} 2321e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 2331e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora// NEON variants of the fancy upsampler. 234af51b94a435132e9014c324e25fb686b3d07a8c8Vikas AroraNEON_UPSAMPLE_FUNC(UpsampleRgbLinePair, Rgb, 3) 235af51b94a435132e9014c324e25fb686b3d07a8c8Vikas AroraNEON_UPSAMPLE_FUNC(UpsampleBgrLinePair, Bgr, 3) 236af51b94a435132e9014c324e25fb686b3d07a8c8Vikas AroraNEON_UPSAMPLE_FUNC(UpsampleRgbaLinePair, Rgba, 4) 237af51b94a435132e9014c324e25fb686b3d07a8c8Vikas AroraNEON_UPSAMPLE_FUNC(UpsampleBgraLinePair, Bgra, 4) 2381e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 2391e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#endif // FANCY_UPSAMPLING 2401e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 2411e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#endif // WEBP_USE_NEON 2421e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 2431e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora//------------------------------------------------------------------------------ 2441e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 245af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Aroraextern void WebPInitUpsamplersNEON(void); 246af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora 2478b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora#ifdef FANCY_UPSAMPLING 2488b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora 2491e7bf8805bd030c19924a5306837ecd72c295751Vikas Aroraextern WebPUpsampleLinePairFunc WebPUpsamplers[/* MODE_LAST */]; 2501e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 2511e7bf8805bd030c19924a5306837ecd72c295751Vikas Aroravoid WebPInitUpsamplersNEON(void) { 2521e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#if defined(WEBP_USE_NEON) 253af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora WebPUpsamplers[MODE_RGB] = UpsampleRgbLinePair; 254af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora WebPUpsamplers[MODE_RGBA] = UpsampleRgbaLinePair; 255af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora WebPUpsamplers[MODE_BGR] = UpsampleBgrLinePair; 256af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora WebPUpsamplers[MODE_BGRA] = UpsampleBgraLinePair; 257af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora WebPUpsamplers[MODE_rgbA] = UpsampleRgbaLinePair; 258af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Arora WebPUpsamplers[MODE_bgrA] = UpsampleBgraLinePair; 2591e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora#endif // WEBP_USE_NEON 2601e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora} 2611e7bf8805bd030c19924a5306837ecd72c295751Vikas Arora 2628b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora#else 2638b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora 2648b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora// this empty function is to avoid an empty .o 265af51b94a435132e9014c324e25fb686b3d07a8c8Vikas Aroravoid WebPInitUpsamplersNEON(void) {} 2668b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora 2678b720228d581a84fd173b6dcb2fa295b59db489aVikas Arora#endif // FANCY_UPSAMPLING 268