| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkSwizzler_opts_DEFINED |
| #define SkSwizzler_opts_DEFINED |
| |
| #include "include/private/SkColorData.h" |
| #include "include/private/SkVx.h" |
| #include <utility> |
| |
| #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3 |
| #include <immintrin.h> |
| #elif defined(SK_ARM_HAS_NEON) |
| #include <arm_neon.h> |
| #endif |
| |
| namespace SK_OPTS_NS { |
| |
| static void RGBA_to_rgbA_portable(uint32_t* dst, const uint32_t* src, int count) { |
| for (int i = 0; i < count; i++) { |
| uint8_t a = (src[i] >> 24) & 0xFF, |
| b = (src[i] >> 16) & 0xFF, |
| g = (src[i] >> 8) & 0xFF, |
| r = (src[i] >> 0) & 0xFF; |
| b = (b*a+127)/255; |
| g = (g*a+127)/255; |
| r = (r*a+127)/255; |
| dst[i] = (uint32_t)a << 24 |
| | (uint32_t)b << 16 |
| | (uint32_t)g << 8 |
| | (uint32_t)r << 0; |
| } |
| } |
| |
| static void RGBA_to_bgrA_portable(uint32_t* dst, const uint32_t* src, int count) { |
| for (int i = 0; i < count; i++) { |
| uint8_t a = (src[i] >> 24) & 0xFF, |
| b = (src[i] >> 16) & 0xFF, |
| g = (src[i] >> 8) & 0xFF, |
| r = (src[i] >> 0) & 0xFF; |
| b = (b*a+127)/255; |
| g = (g*a+127)/255; |
| r = (r*a+127)/255; |
| dst[i] = (uint32_t)a << 24 |
| | (uint32_t)r << 16 |
| | (uint32_t)g << 8 |
| | (uint32_t)b << 0; |
| } |
| } |
| |
| static void RGBA_to_BGRA_portable(uint32_t* dst, const uint32_t* src, int count) { |
| for (int i = 0; i < count; i++) { |
| uint8_t a = (src[i] >> 24) & 0xFF, |
| b = (src[i] >> 16) & 0xFF, |
| g = (src[i] >> 8) & 0xFF, |
| r = (src[i] >> 0) & 0xFF; |
| dst[i] = (uint32_t)a << 24 |
| | (uint32_t)r << 16 |
| | (uint32_t)g << 8 |
| | (uint32_t)b << 0; |
| } |
| } |
| |
| static void grayA_to_RGBA_portable(uint32_t dst[], const uint8_t* src, int count) { |
| for (int i = 0; i < count; i++) { |
| uint8_t g = src[0], |
| a = src[1]; |
| src += 2; |
| dst[i] = (uint32_t)a << 24 |
| | (uint32_t)g << 16 |
| | (uint32_t)g << 8 |
| | (uint32_t)g << 0; |
| } |
| } |
| |
| static void grayA_to_rgbA_portable(uint32_t dst[], const uint8_t* src, int count) { |
| for (int i = 0; i < count; i++) { |
| uint8_t g = src[0], |
| a = src[1]; |
| src += 2; |
| g = (g*a+127)/255; |
| dst[i] = (uint32_t)a << 24 |
| | (uint32_t)g << 16 |
| | (uint32_t)g << 8 |
| | (uint32_t)g << 0; |
| } |
| } |
| |
| static void inverted_CMYK_to_RGB1_portable(uint32_t* dst, const uint32_t* src, int count) { |
| for (int i = 0; i < count; i++) { |
| uint8_t k = (src[i] >> 24) & 0xFF, |
| y = (src[i] >> 16) & 0xFF, |
| m = (src[i] >> 8) & 0xFF, |
| c = (src[i] >> 0) & 0xFF; |
| // See comments in SkSwizzler.cpp for details on the conversion formula. |
| uint8_t b = (y*k+127)/255, |
| g = (m*k+127)/255, |
| r = (c*k+127)/255; |
| dst[i] = (uint32_t)0xFF << 24 |
| | (uint32_t) b << 16 |
| | (uint32_t) g << 8 |
| | (uint32_t) r << 0; |
| } |
| } |
| |
| static void inverted_CMYK_to_BGR1_portable(uint32_t* dst, const uint32_t* src, int count) { |
| for (int i = 0; i < count; i++) { |
| uint8_t k = (src[i] >> 24) & 0xFF, |
| y = (src[i] >> 16) & 0xFF, |
| m = (src[i] >> 8) & 0xFF, |
| c = (src[i] >> 0) & 0xFF; |
| uint8_t b = (y*k+127)/255, |
| g = (m*k+127)/255, |
| r = (c*k+127)/255; |
| dst[i] = (uint32_t)0xFF << 24 |
| | (uint32_t) r << 16 |
| | (uint32_t) g << 8 |
| | (uint32_t) b << 0; |
| } |
| } |
| |
| #if defined(SK_ARM_HAS_NEON) |
| |
| // Rounded divide by 255, (x + 127) / 255 |
| static uint8x8_t div255_round(uint16x8_t x) { |
| // result = (x + 127) / 255 |
| // result = (x + 127) / 256 + error1 |
| // |
| // error1 = (x + 127) / (255 * 256) |
| // error1 = (x + 127) / (256 * 256) + error2 |
| // |
| // error2 = (x + 127) / (255 * 256 * 256) |
| // |
| // The maximum value of error2 is too small to matter. Thus: |
| // result = (x + 127) / 256 + (x + 127) / (256 * 256) |
| // result = ((x + 127) / 256 + x + 127) / 256 |
| // result = ((x + 127) >> 8 + x + 127) >> 8 |
| // |
| // Use >>> to represent "rounded right shift" which, conveniently, |
| // NEON supports in one instruction. |
| // result = ((x >>> 8) + x) >>> 8 |
| // |
| // Note that the second right shift is actually performed as an |
| // "add, round, and narrow back to 8-bits" instruction. |
| return vraddhn_u16(x, vrshrq_n_u16(x, 8)); |
| } |
| |
| // Scale a byte by another, (x * y + 127) / 255 |
| static uint8x8_t scale(uint8x8_t x, uint8x8_t y) { |
| return div255_round(vmull_u8(x, y)); |
| } |
| |
| static void premul_should_swapRB(bool kSwapRB, uint32_t* dst, const uint32_t* src, int count) { |
| while (count >= 8) { |
| // Load 8 pixels. |
| uint8x8x4_t rgba = vld4_u8((const uint8_t*) src); |
| |
| uint8x8_t a = rgba.val[3], |
| b = rgba.val[2], |
| g = rgba.val[1], |
| r = rgba.val[0]; |
| |
| // Premultiply. |
| b = scale(b, a); |
| g = scale(g, a); |
| r = scale(r, a); |
| |
| // Store 8 premultiplied pixels. |
| if (kSwapRB) { |
| rgba.val[2] = r; |
| rgba.val[1] = g; |
| rgba.val[0] = b; |
| } else { |
| rgba.val[2] = b; |
| rgba.val[1] = g; |
| rgba.val[0] = r; |
| } |
| vst4_u8((uint8_t*) dst, rgba); |
| src += 8; |
| dst += 8; |
| count -= 8; |
| } |
| |
| // Call portable code to finish up the tail of [0,8) pixels. |
| auto proc = kSwapRB ? RGBA_to_bgrA_portable : RGBA_to_rgbA_portable; |
| proc(dst, src, count); |
| } |
| |
| /*not static*/ inline void RGBA_to_rgbA(uint32_t* dst, const uint32_t* src, int count) { |
| premul_should_swapRB(false, dst, src, count); |
| } |
| |
| /*not static*/ inline void RGBA_to_bgrA(uint32_t* dst, const uint32_t* src, int count) { |
| premul_should_swapRB(true, dst, src, count); |
| } |
| |
| /*not static*/ inline void RGBA_to_BGRA(uint32_t* dst, const uint32_t* src, int count) { |
| using std::swap; |
| while (count >= 16) { |
| // Load 16 pixels. |
| uint8x16x4_t rgba = vld4q_u8((const uint8_t*) src); |
| |
| // Swap r and b. |
| swap(rgba.val[0], rgba.val[2]); |
| |
| // Store 16 pixels. |
| vst4q_u8((uint8_t*) dst, rgba); |
| src += 16; |
| dst += 16; |
| count -= 16; |
| } |
| |
| if (count >= 8) { |
| // Load 8 pixels. |
| uint8x8x4_t rgba = vld4_u8((const uint8_t*) src); |
| |
| // Swap r and b. |
| swap(rgba.val[0], rgba.val[2]); |
| |
| // Store 8 pixels. |
| vst4_u8((uint8_t*) dst, rgba); |
| src += 8; |
| dst += 8; |
| count -= 8; |
| } |
| |
| RGBA_to_BGRA_portable(dst, src, count); |
| } |
| |
| static void expand_grayA(bool kPremul, uint32_t dst[], const uint8_t* src, int count) { |
| while (count >= 16) { |
| // Load 16 pixels. |
| uint8x16x2_t ga = vld2q_u8(src); |
| |
| // Premultiply if requested. |
| if (kPremul) { |
| ga.val[0] = vcombine_u8( |
| scale(vget_low_u8(ga.val[0]), vget_low_u8(ga.val[1])), |
| scale(vget_high_u8(ga.val[0]), vget_high_u8(ga.val[1]))); |
| } |
| |
| // Set each of the color channels. |
| uint8x16x4_t rgba; |
| rgba.val[0] = ga.val[0]; |
| rgba.val[1] = ga.val[0]; |
| rgba.val[2] = ga.val[0]; |
| rgba.val[3] = ga.val[1]; |
| |
| // Store 16 pixels. |
| vst4q_u8((uint8_t*) dst, rgba); |
| src += 16*2; |
| dst += 16; |
| count -= 16; |
| } |
| |
| if (count >= 8) { |
| // Load 8 pixels. |
| uint8x8x2_t ga = vld2_u8(src); |
| |
| // Premultiply if requested. |
| if (kPremul) { |
| ga.val[0] = scale(ga.val[0], ga.val[1]); |
| } |
| |
| // Set each of the color channels. |
| uint8x8x4_t rgba; |
| rgba.val[0] = ga.val[0]; |
| rgba.val[1] = ga.val[0]; |
| rgba.val[2] = ga.val[0]; |
| rgba.val[3] = ga.val[1]; |
| |
| // Store 8 pixels. |
| vst4_u8((uint8_t*) dst, rgba); |
| src += 8*2; |
| dst += 8; |
| count -= 8; |
| } |
| |
| auto proc = kPremul ? grayA_to_rgbA_portable : grayA_to_RGBA_portable; |
| proc(dst, src, count); |
| } |
| |
| /*not static*/ inline void grayA_to_RGBA(uint32_t dst[], const uint8_t* src, int count) { |
| expand_grayA(false, dst, src, count); |
| } |
| |
| /*not static*/ inline void grayA_to_rgbA(uint32_t dst[], const uint8_t* src, int count) { |
| expand_grayA(true, dst, src, count); |
| } |
| |
| enum Format { kRGB1, kBGR1 }; |
| static void inverted_cmyk_to(Format format, uint32_t* dst, const uint32_t* src, int count) { |
| while (count >= 8) { |
| // Load 8 cmyk pixels. |
| uint8x8x4_t pixels = vld4_u8((const uint8_t*) src); |
| |
| uint8x8_t k = pixels.val[3], |
| y = pixels.val[2], |
| m = pixels.val[1], |
| c = pixels.val[0]; |
| |
| // Scale to r, g, b. |
| uint8x8_t b = scale(y, k); |
| uint8x8_t g = scale(m, k); |
| uint8x8_t r = scale(c, k); |
| |
| // Store 8 rgba pixels. |
| if (kBGR1 == format) { |
| pixels.val[3] = vdup_n_u8(0xFF); |
| pixels.val[2] = r; |
| pixels.val[1] = g; |
| pixels.val[0] = b; |
| } else { |
| pixels.val[3] = vdup_n_u8(0xFF); |
| pixels.val[2] = b; |
| pixels.val[1] = g; |
| pixels.val[0] = r; |
| } |
| vst4_u8((uint8_t*) dst, pixels); |
| src += 8; |
| dst += 8; |
| count -= 8; |
| } |
| |
| auto proc = (kBGR1 == format) ? inverted_CMYK_to_BGR1_portable : inverted_CMYK_to_RGB1_portable; |
| proc(dst, src, count); |
| } |
| |
| /*not static*/ inline void inverted_CMYK_to_RGB1(uint32_t dst[], const uint32_t* src, int count) { |
| inverted_cmyk_to(kRGB1, dst, src, count); |
| } |
| |
| /*not static*/ inline void inverted_CMYK_to_BGR1(uint32_t dst[], const uint32_t* src, int count) { |
| inverted_cmyk_to(kBGR1, dst, src, count); |
| } |
| |
| #elif SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SKX |
| // Scale a byte by another. |
| // Inputs are stored in 16-bit lanes, but are not larger than 8-bits. |
| static __m512i scale(__m512i x, __m512i y) { |
| const __m512i _128 = _mm512_set1_epi16(128); |
| const __m512i _257 = _mm512_set1_epi16(257); |
| |
| // (x+127)/255 == ((x+128)*257)>>16 for 0 <= x <= 255*255. |
| return _mm512_mulhi_epu16(_mm512_add_epi16(_mm512_mullo_epi16(x, y), _128), _257); |
| } |
| |
| static void premul_should_swapRB(bool kSwapRB, uint32_t* dst, const uint32_t* src, int count) { |
| |
| auto premul8 = [=](__m512i* lo, __m512i* hi) { |
| const __m512i zeros = _mm512_setzero_si512(); |
| skvx::Vec<64, uint8_t> mask; |
| if (kSwapRB) { |
| mask = { 2,6,10,14, 1,5,9,13, 0,4,8,12, 3,7,11,15, |
| 2,6,10,14, 1,5,9,13, 0,4,8,12, 3,7,11,15, |
| 2,6,10,14, 1,5,9,13, 0,4,8,12, 3,7,11,15, |
| 2,6,10,14, 1,5,9,13, 0,4,8,12, 3,7,11,15 }; |
| } else { |
| mask = { 0,4,8,12, 1,5,9,13, 2,6,10,14, 3,7,11,15, |
| 0,4,8,12, 1,5,9,13, 2,6,10,14, 3,7,11,15, |
| 0,4,8,12, 1,5,9,13, 2,6,10,14, 3,7,11,15, |
| 0,4,8,12, 1,5,9,13, 2,6,10,14, 3,7,11,15 }; |
| } |
| __m512i planar = skvx::bit_pun<__m512i>(mask); |
| |
| // Swizzle the pixels to 8-bit planar. |
| *lo = _mm512_shuffle_epi8(*lo, planar); |
| *hi = _mm512_shuffle_epi8(*hi, planar); |
| __m512i rg = _mm512_unpacklo_epi32(*lo, *hi), |
| ba = _mm512_unpackhi_epi32(*lo, *hi); |
| |
| // Unpack to 16-bit planar. |
| __m512i r = _mm512_unpacklo_epi8(rg, zeros), |
| g = _mm512_unpackhi_epi8(rg, zeros), |
| b = _mm512_unpacklo_epi8(ba, zeros), |
| a = _mm512_unpackhi_epi8(ba, zeros); |
| |
| // Premultiply! |
| r = scale(r, a); |
| g = scale(g, a); |
| b = scale(b, a); |
| |
| // Repack into interlaced pixels. |
| rg = _mm512_or_si512(r, _mm512_slli_epi16(g, 8)); |
| ba = _mm512_or_si512(b, _mm512_slli_epi16(a, 8)); |
| *lo = _mm512_unpacklo_epi16(rg, ba); |
| *hi = _mm512_unpackhi_epi16(rg, ba); |
| }; |
| |
| while (count >= 32) { |
| __m512i lo = _mm512_loadu_si512((const __m512i*) (src + 0)), |
| hi = _mm512_loadu_si512((const __m512i*) (src + 16)); |
| |
| premul8(&lo, &hi); |
| |
| _mm512_storeu_si512((__m512i*) (dst + 0), lo); |
| _mm512_storeu_si512((__m512i*) (dst + 16), hi); |
| |
| src += 32; |
| dst += 32; |
| count -= 32; |
| } |
| |
| if (count >= 16) { |
| __m512i lo = _mm512_loadu_si512((const __m512i*) src), |
| hi = _mm512_setzero_si512(); |
| |
| premul8(&lo, &hi); |
| |
| _mm512_storeu_si512((__m512i*) dst, lo); |
| |
| src += 16; |
| dst += 16; |
| count -= 16; |
| } |
| |
| // Call portable code to finish up the tail of [0,16) pixels. |
| auto proc = kSwapRB ? RGBA_to_bgrA_portable : RGBA_to_rgbA_portable; |
| proc(dst, src, count); |
| } |
| |
| /*not static*/ inline void RGBA_to_rgbA(uint32_t* dst, const uint32_t* src, int count) { |
| premul_should_swapRB(false, dst, src, count); |
| } |
| |
| /*not static*/ inline void RGBA_to_bgrA(uint32_t* dst, const uint32_t* src, int count) { |
| premul_should_swapRB(true, dst, src, count); |
| } |
| |
| /*not static*/ inline void RGBA_to_BGRA(uint32_t* dst, const uint32_t* src, int count) { |
| const uint8_t mask[64] = { 2,1,0,3, 6,5,4,7, 10,9,8,11, 14,13,12,15, |
| 2,1,0,3, 6,5,4,7, 10,9,8,11, 14,13,12,15, |
| 2,1,0,3, 6,5,4,7, 10,9,8,11, 14,13,12,15, |
| 2,1,0,3, 6,5,4,7, 10,9,8,11, 14,13,12,15 }; |
| const __m512i swapRB = _mm512_loadu_si512(mask); |
| |
| while (count >= 16) { |
| __m512i rgba = _mm512_loadu_si512((const __m512i*) src); |
| __m512i bgra = _mm512_shuffle_epi8(rgba, swapRB); |
| _mm512_storeu_si512((__m512i*) dst, bgra); |
| |
| src += 16; |
| dst += 16; |
| count -= 16; |
| } |
| |
| RGBA_to_BGRA_portable(dst, src, count); |
| } |
| |
| // Use SSSE3 impl as AVX2 / AVX-512 impl regresses performance for RGB_to_RGB1 / RGB_to_BGR1. |
| |
| // Use AVX2 impl as AVX-512 impl regresses performance for gray_to_RGB1. |
| |
| /*not static*/ inline void grayA_to_RGBA(uint32_t dst[], const uint8_t* src, int count) { |
| while (count >= 32) { |
| __m512i ga = _mm512_loadu_si512((const __m512i*) src); |
| |
| __m512i gg = _mm512_or_si512(_mm512_and_si512(ga, _mm512_set1_epi16(0x00FF)), |
| _mm512_slli_epi16(ga, 8)); |
| |
| __m512i ggga_lo = _mm512_unpacklo_epi16(gg, ga); |
| __m512i ggga_hi = _mm512_unpackhi_epi16(gg, ga); |
| |
| // 1st shuffle for pixel reorder. |
| // Note. 'p' stands for 'ggga' |
| // Before 1st shuffle: |
| // ggga_lo = p0 p1 p2 p3 | p8 p9 p10 p11 | p16 p17 p18 p19 | p24 p25 p26 p27 |
| // ggga_hi = p4 p5 p6 p7 | p12 p13 p14 p15 | p20 p21 p22 p23 | p28 p29 p30 p31 |
| // |
| // After 1st shuffle: |
| // ggga_lo_shuffle_1 = |
| // p0 p1 p2 p3 | p8 p9 p10 p11 | p4 p5 p6 p7 | p12 p13 p14 p15 |
| // ggga_hi_shuffle_1 = |
| // p16 p17 p18 p19 | p24 p25 p26 p27 | p20 p21 p22 p23 | p28 p29 p30 p31 |
| __m512i ggga_lo_shuffle_1 = _mm512_shuffle_i32x4(ggga_lo, ggga_hi, 0x44), |
| ggga_hi_shuffle_1 = _mm512_shuffle_i32x4(ggga_lo, ggga_hi, 0xee); |
| |
| // 2nd shuffle for pixel reorder. |
| // After the 2nd shuffle: |
| // ggga_lo_shuffle_2 = |
| // p0 p1 p2 p3 | p4 p5 p6 p7 | p8 p9 p10 p11 | p12 p13 p14 p15 |
| // ggga_hi_shuffle_2 = |
| // p16 p17 p18 p19 | p20 p21 p22 p23 | p24 p25 p26 p27 | p28 p29 p30 p31 |
| __m512i ggga_lo_shuffle_2 = _mm512_shuffle_i32x4(ggga_lo_shuffle_1, |
| ggga_lo_shuffle_1, 0xd8), |
| ggga_hi_shuffle_2 = _mm512_shuffle_i32x4(ggga_hi_shuffle_1, |
| ggga_hi_shuffle_1, 0xd8); |
| |
| _mm512_storeu_si512((__m512i*) (dst + 0), ggga_lo_shuffle_2); |
| _mm512_storeu_si512((__m512i*) (dst + 16), ggga_hi_shuffle_2); |
| |
| src += 32*2; |
| dst += 32; |
| count -= 32; |
| } |
| |
| grayA_to_RGBA_portable(dst, src, count); |
| } |
| |
| /*not static*/ inline void grayA_to_rgbA(uint32_t dst[], const uint8_t* src, int count) { |
| while (count >= 32) { |
| __m512i grayA = _mm512_loadu_si512((const __m512i*) src); |
| |
| __m512i g0 = _mm512_and_si512(grayA, _mm512_set1_epi16(0x00FF)); |
| __m512i a0 = _mm512_srli_epi16(grayA, 8); |
| |
| // Premultiply |
| g0 = scale(g0, a0); |
| |
| __m512i gg = _mm512_or_si512(g0, _mm512_slli_epi16(g0, 8)); |
| __m512i ga = _mm512_or_si512(g0, _mm512_slli_epi16(a0, 8)); |
| |
| __m512i ggga_lo = _mm512_unpacklo_epi16(gg, ga); |
| __m512i ggga_hi = _mm512_unpackhi_epi16(gg, ga); |
| |
| // 1st shuffle for pixel reorder, same as grayA_to_RGBA. |
| __m512i ggga_lo_shuffle_1 = _mm512_shuffle_i32x4(ggga_lo, ggga_hi, 0x44), |
| ggga_hi_shuffle_1 = _mm512_shuffle_i32x4(ggga_lo, ggga_hi, 0xee); |
| |
| // 2nd shuffle for pixel reorder, same as grayA_to_RGBA. |
| __m512i ggga_lo_shuffle_2 = _mm512_shuffle_i32x4(ggga_lo_shuffle_1, |
| ggga_lo_shuffle_1, 0xd8), |
| ggga_hi_shuffle_2 = _mm512_shuffle_i32x4(ggga_hi_shuffle_1, |
| ggga_hi_shuffle_1, 0xd8); |
| |
| _mm512_storeu_si512((__m512i*) (dst + 0), ggga_lo_shuffle_2); |
| _mm512_storeu_si512((__m512i*) (dst + 16), ggga_hi_shuffle_2); |
| |
| src += 32*2; |
| dst += 32; |
| count -= 32; |
| } |
| |
| grayA_to_rgbA_portable(dst, src, count); |
| } |
| |
| enum Format { kRGB1, kBGR1 }; |
| static void inverted_cmyk_to(Format format, uint32_t* dst, const uint32_t* src, int count) { |
| auto convert8 = [=](__m512i* lo, __m512i* hi) { |
| const __m512i zeros = _mm512_setzero_si512(); |
| skvx::Vec<64, uint8_t> mask; |
| if (kBGR1 == format) { |
| mask = { 2,6,10,14, 1,5,9,13, 0,4,8,12, 3,7,11,15, |
| 2,6,10,14, 1,5,9,13, 0,4,8,12, 3,7,11,15, |
| 2,6,10,14, 1,5,9,13, 0,4,8,12, 3,7,11,15, |
| 2,6,10,14, 1,5,9,13, 0,4,8,12, 3,7,11,15 }; |
| } else { |
| mask = { 0,4,8,12, 1,5,9,13, 2,6,10,14, 3,7,11,15, |
| 0,4,8,12, 1,5,9,13, 2,6,10,14, 3,7,11,15, |
| 0,4,8,12, 1,5,9,13, 2,6,10,14, 3,7,11,15, |
| 0,4,8,12, 1,5,9,13, 2,6,10,14, 3,7,11,15 }; |
| } |
| __m512i planar = skvx::bit_pun<__m512i>(mask); |
| |
| // Swizzle the pixels to 8-bit planar. |
| *lo = _mm512_shuffle_epi8(*lo, planar); |
| *hi = _mm512_shuffle_epi8(*hi, planar); |
| __m512i cm = _mm512_unpacklo_epi32(*lo, *hi), |
| yk = _mm512_unpackhi_epi32(*lo, *hi); |
| |
| // Unpack to 16-bit planar. |
| __m512i c = _mm512_unpacklo_epi8(cm, zeros), |
| m = _mm512_unpackhi_epi8(cm, zeros), |
| y = _mm512_unpacklo_epi8(yk, zeros), |
| k = _mm512_unpackhi_epi8(yk, zeros); |
| |
| // Scale to r, g, b. |
| __m512i r = scale(c, k), |
| g = scale(m, k), |
| b = scale(y, k); |
| |
| // Repack into interlaced pixels. |
| __m512i rg = _mm512_or_si512(r, _mm512_slli_epi16(g, 8)), |
| ba = _mm512_or_si512(b, _mm512_set1_epi16((uint16_t) 0xFF00)); |
| *lo = _mm512_unpacklo_epi16(rg, ba); |
| *hi = _mm512_unpackhi_epi16(rg, ba); |
| }; |
| |
| while (count >= 32) { |
| __m512i lo = _mm512_loadu_si512((const __m512i*) (src + 0)), |
| hi = _mm512_loadu_si512((const __m512i*) (src + 16)); |
| |
| convert8(&lo, &hi); |
| |
| _mm512_storeu_si512((__m512i*) (dst + 0), lo); |
| _mm512_storeu_si512((__m512i*) (dst + 16), hi); |
| |
| src += 32; |
| dst += 32; |
| count -= 32; |
| } |
| |
| if (count >= 16) { |
| __m512i lo = _mm512_loadu_si512((const __m512i*) src), |
| hi = _mm512_setzero_si512(); |
| |
| convert8(&lo, &hi); |
| |
| _mm512_storeu_si512((__m512i*) dst, lo); |
| |
| src += 16; |
| dst += 16; |
| count -= 16; |
| } |
| |
| auto proc = (kBGR1 == format) ? inverted_CMYK_to_BGR1_portable : inverted_CMYK_to_RGB1_portable; |
| proc(dst, src, count); |
| } |
| |
| /*not static*/ inline void inverted_CMYK_to_RGB1(uint32_t dst[], const uint32_t* src, int count) { |
| inverted_cmyk_to(kRGB1, dst, src, count); |
| } |
| |
| /*not static*/ inline void inverted_CMYK_to_BGR1(uint32_t dst[], const uint32_t* src, int count) { |
| inverted_cmyk_to(kBGR1, dst, src, count); |
| } |
| |
| #elif SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_AVX2 |
| |
| // Scale a byte by another. |
| // Inputs are stored in 16-bit lanes, but are not larger than 8-bits. |
| static __m256i scale(__m256i x, __m256i y) { |
| const __m256i _128 = _mm256_set1_epi16(128); |
| const __m256i _257 = _mm256_set1_epi16(257); |
| |
| // (x+127)/255 == ((x+128)*257)>>16 for 0 <= x <= 255*255. |
| return _mm256_mulhi_epu16(_mm256_add_epi16(_mm256_mullo_epi16(x, y), _128), _257); |
| } |
| |
| static void premul_should_swapRB(bool kSwapRB, uint32_t* dst, const uint32_t* src, int count) { |
| |
| auto premul8 = [=](__m256i* lo, __m256i* hi) { |
| const __m256i zeros = _mm256_setzero_si256(); |
| __m256i planar; |
| if (kSwapRB) { |
| planar = _mm256_setr_epi8(2,6,10,14, 1,5,9,13, 0,4,8,12, 3,7,11,15, |
| 2,6,10,14, 1,5,9,13, 0,4,8,12, 3,7,11,15); |
| } else { |
| planar = _mm256_setr_epi8(0,4,8,12, 1,5,9,13, 2,6,10,14, 3,7,11,15, |
| 0,4,8,12, 1,5,9,13, 2,6,10,14, 3,7,11,15); |
| } |
| |
| // Swizzle the pixels to 8-bit planar. |
| *lo = _mm256_shuffle_epi8(*lo, planar); // rrrrgggg bbbbaaaa rrrrgggg bbbbaaaa |
| *hi = _mm256_shuffle_epi8(*hi, planar); // RRRRGGGG BBBBAAAA RRRRGGGG BBBBAAAA |
| __m256i rg = _mm256_unpacklo_epi32(*lo, *hi), // rrrrRRRR ggggGGGG rrrrRRRR ggggGGGG |
| ba = _mm256_unpackhi_epi32(*lo, *hi); // bbbbBBBB aaaaAAAA bbbbBBBB aaaaAAAA |
| |
| // Unpack to 16-bit planar. |
| __m256i r = _mm256_unpacklo_epi8(rg, zeros), // r_r_r_r_ R_R_R_R_ r_r_r_r_ R_R_R_R_ |
| g = _mm256_unpackhi_epi8(rg, zeros), // g_g_g_g_ G_G_G_G_ g_g_g_g_ G_G_G_G_ |
| b = _mm256_unpacklo_epi8(ba, zeros), // b_b_b_b_ B_B_B_B_ b_b_b_b_ B_B_B_B_ |
| a = _mm256_unpackhi_epi8(ba, zeros); // a_a_a_a_ A_A_A_A_ a_a_a_a_ A_A_A_A_ |
| |
| // Premultiply! |
| r = scale(r, a); |
| g = scale(g, a); |
| b = scale(b, a); |
| |
| // Repack into interlaced pixels. |
| rg = _mm256_or_si256(r, _mm256_slli_epi16(g, 8)); // rgrgrgrg RGRGRGRG rgrgrgrg RGRGRGRG |
| ba = _mm256_or_si256(b, _mm256_slli_epi16(a, 8)); // babababa BABABABA babababa BABABABA |
| *lo = _mm256_unpacklo_epi16(rg, ba); // rgbargba rgbargba rgbargba rgbargba |
| *hi = _mm256_unpackhi_epi16(rg, ba); // RGBARGBA RGBARGBA RGBARGBA RGBARGBA |
| }; |
| |
| while (count >= 16) { |
| __m256i lo = _mm256_loadu_si256((const __m256i*) (src + 0)), |
| hi = _mm256_loadu_si256((const __m256i*) (src + 8)); |
| |
| premul8(&lo, &hi); |
| |
| _mm256_storeu_si256((__m256i*) (dst + 0), lo); |
| _mm256_storeu_si256((__m256i*) (dst + 8), hi); |
| |
| src += 16; |
| dst += 16; |
| count -= 16; |
| } |
| |
| if (count >= 8) { |
| __m256i lo = _mm256_loadu_si256((const __m256i*) src), |
| hi = _mm256_setzero_si256(); |
| |
| premul8(&lo, &hi); |
| |
| _mm256_storeu_si256((__m256i*) dst, lo); |
| |
| src += 8; |
| dst += 8; |
| count -= 8; |
| } |
| |
| // Call portable code to finish up the tail of [0,8) pixels. |
| auto proc = kSwapRB ? RGBA_to_bgrA_portable : RGBA_to_rgbA_portable; |
| proc(dst, src, count); |
| } |
| |
| /*not static*/ inline void RGBA_to_rgbA(uint32_t* dst, const uint32_t* src, int count) { |
| premul_should_swapRB(false, dst, src, count); |
| } |
| |
| /*not static*/ inline void RGBA_to_bgrA(uint32_t* dst, const uint32_t* src, int count) { |
| premul_should_swapRB(true, dst, src, count); |
| } |
| |
| /*not static*/ inline void RGBA_to_BGRA(uint32_t* dst, const uint32_t* src, int count) { |
| const __m256i swapRB = _mm256_setr_epi8(2,1,0,3, 6,5,4,7, 10,9,8,11, 14,13,12,15, |
| 2,1,0,3, 6,5,4,7, 10,9,8,11, 14,13,12,15); |
| |
| while (count >= 8) { |
| __m256i rgba = _mm256_loadu_si256((const __m256i*) src); |
| __m256i bgra = _mm256_shuffle_epi8(rgba, swapRB); |
| _mm256_storeu_si256((__m256i*) dst, bgra); |
| |
| src += 8; |
| dst += 8; |
| count -= 8; |
| } |
| |
| RGBA_to_BGRA_portable(dst, src, count); |
| } |
| |
| /*not static*/ inline void grayA_to_RGBA(uint32_t dst[], const uint8_t* src, int count) { |
| while (count >= 16) { |
| __m256i ga = _mm256_loadu_si256((const __m256i*) src); |
| |
| __m256i gg = _mm256_or_si256(_mm256_and_si256(ga, _mm256_set1_epi16(0x00FF)), |
| _mm256_slli_epi16(ga, 8)); |
| |
| __m256i ggga_lo = _mm256_unpacklo_epi16(gg, ga); |
| __m256i ggga_hi = _mm256_unpackhi_epi16(gg, ga); |
| |
| // Shuffle for pixel reorder |
| // Note. 'p' stands for 'ggga' |
| // Before shuffle: |
| // ggga_lo = p0 p1 p2 p3 | p8 p9 p10 p11 |
| // ggga_hi = p4 p5 p6 p7 | p12 p13 p14 p15 |
| // |
| // After shuffle: |
| // ggga_lo_shuffle = p0 p1 p2 p3 | p4 p5 p6 p7 |
| // ggga_hi_shuffle = p8 p9 p10 p11 | p12 p13 p14 p15 |
| __m256i ggga_lo_shuffle = _mm256_permute2x128_si256(ggga_lo, ggga_hi, 0x20), |
| ggga_hi_shuffle = _mm256_permute2x128_si256(ggga_lo, ggga_hi, 0x31); |
| |
| _mm256_storeu_si256((__m256i*) (dst + 0), ggga_lo_shuffle); |
| _mm256_storeu_si256((__m256i*) (dst + 8), ggga_hi_shuffle); |
| |
| src += 16*2; |
| dst += 16; |
| count -= 16; |
| } |
| |
| grayA_to_RGBA_portable(dst, src, count); |
| } |
| |
| /*not static*/ inline void grayA_to_rgbA(uint32_t dst[], const uint8_t* src, int count) { |
| while (count >= 16) { |
| __m256i grayA = _mm256_loadu_si256((const __m256i*) src); |
| |
| __m256i g0 = _mm256_and_si256(grayA, _mm256_set1_epi16(0x00FF)); |
| __m256i a0 = _mm256_srli_epi16(grayA, 8); |
| |
| // Premultiply |
| g0 = scale(g0, a0); |
| |
| __m256i gg = _mm256_or_si256(g0, _mm256_slli_epi16(g0, 8)); |
| __m256i ga = _mm256_or_si256(g0, _mm256_slli_epi16(a0, 8)); |
| |
| __m256i ggga_lo = _mm256_unpacklo_epi16(gg, ga); |
| __m256i ggga_hi = _mm256_unpackhi_epi16(gg, ga); |
| |
| // Shuffle for pixel reorder, similar as grayA_to_RGBA |
| __m256i ggga_lo_shuffle = _mm256_permute2x128_si256(ggga_lo, ggga_hi, 0x20), |
| ggga_hi_shuffle = _mm256_permute2x128_si256(ggga_lo, ggga_hi, 0x31); |
| |
| _mm256_storeu_si256((__m256i*) (dst + 0), ggga_lo_shuffle); |
| _mm256_storeu_si256((__m256i*) (dst + 8), ggga_hi_shuffle); |
| |
| src += 16*2; |
| dst += 16; |
| count -= 16; |
| } |
| |
| grayA_to_rgbA_portable(dst, src, count); |
| } |
| |
| enum Format { kRGB1, kBGR1 }; |
| static void inverted_cmyk_to(Format format, uint32_t* dst, const uint32_t* src, int count) { |
| auto convert8 = [=](__m256i* lo, __m256i* hi) { |
| const __m256i zeros = _mm256_setzero_si256(); |
| __m256i planar; |
| if (kBGR1 == format) { |
| planar = _mm256_setr_epi8(2,6,10,14, 1,5,9,13, 0,4,8,12, 3,7,11,15, |
| 2,6,10,14, 1,5,9,13, 0,4,8,12, 3,7,11,15); |
| } else { |
| planar = _mm256_setr_epi8(0,4,8,12, 1,5,9,13, 2,6,10,14, 3,7,11,15, |
| 0,4,8,12, 1,5,9,13, 2,6,10,14, 3,7,11,15); |
| } |
| |
| // Swizzle the pixels to 8-bit planar. |
| *lo = _mm256_shuffle_epi8(*lo, planar); // ccccmmmm yyyykkkk ccccmmmm yyyykkkk |
| *hi = _mm256_shuffle_epi8(*hi, planar); // CCCCMMMM YYYYKKKK CCCCMMMM YYYYKKKK |
| __m256i cm = _mm256_unpacklo_epi32(*lo, *hi), // ccccCCCC mmmmMMMM ccccCCCC mmmmMMMM |
| yk = _mm256_unpackhi_epi32(*lo, *hi); // yyyyYYYY kkkkKKKK yyyyYYYY kkkkKKKK |
| |
| // Unpack to 16-bit planar. |
| __m256i c = _mm256_unpacklo_epi8(cm, zeros), // c_c_c_c_ C_C_C_C_ c_c_c_c_ C_C_C_C_ |
| m = _mm256_unpackhi_epi8(cm, zeros), // m_m_m_m_ M_M_M_M_ m_m_m_m_ M_M_M_M_ |
| y = _mm256_unpacklo_epi8(yk, zeros), // y_y_y_y_ Y_Y_Y_Y_ y_y_y_y_ Y_Y_Y_Y_ |
| k = _mm256_unpackhi_epi8(yk, zeros); // k_k_k_k_ K_K_K_K_ k_k_k_k_ K_K_K_K_ |
| |
| // Scale to r, g, b. |
| __m256i r = scale(c, k), |
| g = scale(m, k), |
| b = scale(y, k); |
| |
| // Repack into interlaced pixels: |
| // rg = rgrgrgrg RGRGRGRG rgrgrgrg RGRGRGRG |
| // ba = b1b1b1b1 B1B1B1B1 b1b1b1b1 B1B1B1B1 |
| __m256i rg = _mm256_or_si256(r, _mm256_slli_epi16(g, 8)), |
| ba = _mm256_or_si256(b, _mm256_set1_epi16((uint16_t) 0xFF00)); |
| *lo = _mm256_unpacklo_epi16(rg, ba); // rgb1rgb1 rgb1rgb1 rgb1rgb1 rgb1rgb1 |
| *hi = _mm256_unpackhi_epi16(rg, ba); // RGB1RGB1 RGB1RGB1 RGB1RGB1 RGB1RGB1 |
| }; |
| |
| while (count >= 16) { |
| __m256i lo = _mm256_loadu_si256((const __m256i*) (src + 0)), |
| hi = _mm256_loadu_si256((const __m256i*) (src + 8)); |
| |
| convert8(&lo, &hi); |
| |
| _mm256_storeu_si256((__m256i*) (dst + 0), lo); |
| _mm256_storeu_si256((__m256i*) (dst + 8), hi); |
| |
| src += 16; |
| dst += 16; |
| count -= 16; |
| } |
| |
| if (count >= 8) { |
| __m256i lo = _mm256_loadu_si256((const __m256i*) src), |
| hi = _mm256_setzero_si256(); |
| |
| convert8(&lo, &hi); |
| |
| _mm256_storeu_si256((__m256i*) dst, lo); |
| |
| src += 8; |
| dst += 8; |
| count -= 8; |
| } |
| |
| auto proc = (kBGR1 == format) ? inverted_CMYK_to_BGR1_portable : inverted_CMYK_to_RGB1_portable; |
| proc(dst, src, count); |
| } |
| |
| /*not static*/ inline void inverted_CMYK_to_RGB1(uint32_t dst[], const uint32_t* src, int count) { |
| inverted_cmyk_to(kRGB1, dst, src, count); |
| } |
| |
| /*not static*/ inline void inverted_CMYK_to_BGR1(uint32_t dst[], const uint32_t* src, int count) { |
| inverted_cmyk_to(kBGR1, dst, src, count); |
| } |
| |
| #elif SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3 |
| |
| // Scale a byte by another. |
| // Inputs are stored in 16-bit lanes, but are not larger than 8-bits. |
| static __m128i scale(__m128i x, __m128i y) { |
| const __m128i _128 = _mm_set1_epi16(128); |
| const __m128i _257 = _mm_set1_epi16(257); |
| |
| // (x+127)/255 == ((x+128)*257)>>16 for 0 <= x <= 255*255. |
| return _mm_mulhi_epu16(_mm_add_epi16(_mm_mullo_epi16(x, y), _128), _257); |
| } |
| |
| static void premul_should_swapRB(bool kSwapRB, uint32_t* dst, const uint32_t* src, int count) { |
| |
| auto premul8 = [=](__m128i* lo, __m128i* hi) { |
| const __m128i zeros = _mm_setzero_si128(); |
| __m128i planar; |
| if (kSwapRB) { |
| planar = _mm_setr_epi8(2,6,10,14, 1,5,9,13, 0,4,8,12, 3,7,11,15); |
| } else { |
| planar = _mm_setr_epi8(0,4,8,12, 1,5,9,13, 2,6,10,14, 3,7,11,15); |
| } |
| |
| // Swizzle the pixels to 8-bit planar. |
| *lo = _mm_shuffle_epi8(*lo, planar); // rrrrgggg bbbbaaaa |
| *hi = _mm_shuffle_epi8(*hi, planar); // RRRRGGGG BBBBAAAA |
| __m128i rg = _mm_unpacklo_epi32(*lo, *hi), // rrrrRRRR ggggGGGG |
| ba = _mm_unpackhi_epi32(*lo, *hi); // bbbbBBBB aaaaAAAA |
| |
| // Unpack to 16-bit planar. |
| __m128i r = _mm_unpacklo_epi8(rg, zeros), // r_r_r_r_ R_R_R_R_ |
| g = _mm_unpackhi_epi8(rg, zeros), // g_g_g_g_ G_G_G_G_ |
| b = _mm_unpacklo_epi8(ba, zeros), // b_b_b_b_ B_B_B_B_ |
| a = _mm_unpackhi_epi8(ba, zeros); // a_a_a_a_ A_A_A_A_ |
| |
| // Premultiply! |
| r = scale(r, a); |
| g = scale(g, a); |
| b = scale(b, a); |
| |
| // Repack into interlaced pixels. |
| rg = _mm_or_si128(r, _mm_slli_epi16(g, 8)); // rgrgrgrg RGRGRGRG |
| ba = _mm_or_si128(b, _mm_slli_epi16(a, 8)); // babababa BABABABA |
| *lo = _mm_unpacklo_epi16(rg, ba); // rgbargba rgbargba |
| *hi = _mm_unpackhi_epi16(rg, ba); // RGBARGBA RGBARGBA |
| }; |
| |
| while (count >= 8) { |
| __m128i lo = _mm_loadu_si128((const __m128i*) (src + 0)), |
| hi = _mm_loadu_si128((const __m128i*) (src + 4)); |
| |
| premul8(&lo, &hi); |
| |
| _mm_storeu_si128((__m128i*) (dst + 0), lo); |
| _mm_storeu_si128((__m128i*) (dst + 4), hi); |
| |
| src += 8; |
| dst += 8; |
| count -= 8; |
| } |
| |
| if (count >= 4) { |
| __m128i lo = _mm_loadu_si128((const __m128i*) src), |
| hi = _mm_setzero_si128(); |
| |
| premul8(&lo, &hi); |
| |
| _mm_storeu_si128((__m128i*) dst, lo); |
| |
| src += 4; |
| dst += 4; |
| count -= 4; |
| } |
| |
| // Call portable code to finish up the tail of [0,4) pixels. |
| auto proc = kSwapRB ? RGBA_to_bgrA_portable : RGBA_to_rgbA_portable; |
| proc(dst, src, count); |
| } |
| |
| /*not static*/ inline void RGBA_to_rgbA(uint32_t* dst, const uint32_t* src, int count) { |
| premul_should_swapRB(false, dst, src, count); |
| } |
| |
| /*not static*/ inline void RGBA_to_bgrA(uint32_t* dst, const uint32_t* src, int count) { |
| premul_should_swapRB(true, dst, src, count); |
| } |
| |
| /*not static*/ inline void RGBA_to_BGRA(uint32_t* dst, const uint32_t* src, int count) { |
| const __m128i swapRB = _mm_setr_epi8(2,1,0,3, 6,5,4,7, 10,9,8,11, 14,13,12,15); |
| |
| while (count >= 4) { |
| __m128i rgba = _mm_loadu_si128((const __m128i*) src); |
| __m128i bgra = _mm_shuffle_epi8(rgba, swapRB); |
| _mm_storeu_si128((__m128i*) dst, bgra); |
| |
| src += 4; |
| dst += 4; |
| count -= 4; |
| } |
| |
| RGBA_to_BGRA_portable(dst, src, count); |
| } |
| |
| /*not static*/ inline void grayA_to_RGBA(uint32_t dst[], const uint8_t* src, int count) { |
| while (count >= 8) { |
| __m128i ga = _mm_loadu_si128((const __m128i*) src); |
| |
| __m128i gg = _mm_or_si128(_mm_and_si128(ga, _mm_set1_epi16(0x00FF)), |
| _mm_slli_epi16(ga, 8)); |
| |
| __m128i ggga_lo = _mm_unpacklo_epi16(gg, ga); |
| __m128i ggga_hi = _mm_unpackhi_epi16(gg, ga); |
| |
| _mm_storeu_si128((__m128i*) (dst + 0), ggga_lo); |
| _mm_storeu_si128((__m128i*) (dst + 4), ggga_hi); |
| |
| src += 8*2; |
| dst += 8; |
| count -= 8; |
| } |
| |
| grayA_to_RGBA_portable(dst, src, count); |
| } |
| |
| /*not static*/ inline void grayA_to_rgbA(uint32_t dst[], const uint8_t* src, int count) { |
| while (count >= 8) { |
| __m128i grayA = _mm_loadu_si128((const __m128i*) src); |
| |
| __m128i g0 = _mm_and_si128(grayA, _mm_set1_epi16(0x00FF)); |
| __m128i a0 = _mm_srli_epi16(grayA, 8); |
| |
| // Premultiply |
| g0 = scale(g0, a0); |
| |
| __m128i gg = _mm_or_si128(g0, _mm_slli_epi16(g0, 8)); |
| __m128i ga = _mm_or_si128(g0, _mm_slli_epi16(a0, 8)); |
| |
| |
| __m128i ggga_lo = _mm_unpacklo_epi16(gg, ga); |
| __m128i ggga_hi = _mm_unpackhi_epi16(gg, ga); |
| |
| _mm_storeu_si128((__m128i*) (dst + 0), ggga_lo); |
| _mm_storeu_si128((__m128i*) (dst + 4), ggga_hi); |
| |
| src += 8*2; |
| dst += 8; |
| count -= 8; |
| } |
| |
| grayA_to_rgbA_portable(dst, src, count); |
| } |
| |
| enum Format { kRGB1, kBGR1 }; |
| static void inverted_cmyk_to(Format format, uint32_t* dst, const uint32_t* src, int count) { |
| auto convert8 = [=](__m128i* lo, __m128i* hi) { |
| const __m128i zeros = _mm_setzero_si128(); |
| __m128i planar; |
| if (kBGR1 == format) { |
| planar = _mm_setr_epi8(2,6,10,14, 1,5,9,13, 0,4,8,12, 3,7,11,15); |
| } else { |
| planar = _mm_setr_epi8(0,4,8,12, 1,5,9,13, 2,6,10,14, 3,7,11,15); |
| } |
| |
| // Swizzle the pixels to 8-bit planar. |
| *lo = _mm_shuffle_epi8(*lo, planar); // ccccmmmm yyyykkkk |
| *hi = _mm_shuffle_epi8(*hi, planar); // CCCCMMMM YYYYKKKK |
| __m128i cm = _mm_unpacklo_epi32(*lo, *hi), // ccccCCCC mmmmMMMM |
| yk = _mm_unpackhi_epi32(*lo, *hi); // yyyyYYYY kkkkKKKK |
| |
| // Unpack to 16-bit planar. |
| __m128i c = _mm_unpacklo_epi8(cm, zeros), // c_c_c_c_ C_C_C_C_ |
| m = _mm_unpackhi_epi8(cm, zeros), // m_m_m_m_ M_M_M_M_ |
| y = _mm_unpacklo_epi8(yk, zeros), // y_y_y_y_ Y_Y_Y_Y_ |
| k = _mm_unpackhi_epi8(yk, zeros); // k_k_k_k_ K_K_K_K_ |
| |
| // Scale to r, g, b. |
| __m128i r = scale(c, k), |
| g = scale(m, k), |
| b = scale(y, k); |
| |
| // Repack into interlaced pixels. |
| __m128i rg = _mm_or_si128(r, _mm_slli_epi16(g, 8)), // rgrgrgrg RGRGRGRG |
| ba = _mm_or_si128(b, _mm_set1_epi16((uint16_t) 0xFF00)); // b1b1b1b1 B1B1B1B1 |
| *lo = _mm_unpacklo_epi16(rg, ba); // rgbargba rgbargba |
| *hi = _mm_unpackhi_epi16(rg, ba); // RGB1RGB1 RGB1RGB1 |
| }; |
| |
| while (count >= 8) { |
| __m128i lo = _mm_loadu_si128((const __m128i*) (src + 0)), |
| hi = _mm_loadu_si128((const __m128i*) (src + 4)); |
| |
| convert8(&lo, &hi); |
| |
| _mm_storeu_si128((__m128i*) (dst + 0), lo); |
| _mm_storeu_si128((__m128i*) (dst + 4), hi); |
| |
| src += 8; |
| dst += 8; |
| count -= 8; |
| } |
| |
| if (count >= 4) { |
| __m128i lo = _mm_loadu_si128((const __m128i*) src), |
| hi = _mm_setzero_si128(); |
| |
| convert8(&lo, &hi); |
| |
| _mm_storeu_si128((__m128i*) dst, lo); |
| |
| src += 4; |
| dst += 4; |
| count -= 4; |
| } |
| |
| auto proc = (kBGR1 == format) ? inverted_CMYK_to_BGR1_portable : inverted_CMYK_to_RGB1_portable; |
| proc(dst, src, count); |
| } |
| |
| /*not static*/ inline void inverted_CMYK_to_RGB1(uint32_t dst[], const uint32_t* src, int count) { |
| inverted_cmyk_to(kRGB1, dst, src, count); |
| } |
| |
| /*not static*/ inline void inverted_CMYK_to_BGR1(uint32_t dst[], const uint32_t* src, int count) { |
| inverted_cmyk_to(kBGR1, dst, src, count); |
| } |
| |
| #else |
| |
| /*not static*/ inline void RGBA_to_rgbA(uint32_t* dst, const uint32_t* src, int count) { |
| RGBA_to_rgbA_portable(dst, src, count); |
| } |
| |
| /*not static*/ inline void RGBA_to_bgrA(uint32_t* dst, const uint32_t* src, int count) { |
| RGBA_to_bgrA_portable(dst, src, count); |
| } |
| |
| /*not static*/ inline void RGBA_to_BGRA(uint32_t* dst, const uint32_t* src, int count) { |
| RGBA_to_BGRA_portable(dst, src, count); |
| } |
| |
| /*not static*/ inline void grayA_to_RGBA(uint32_t dst[], const uint8_t* src, int count) { |
| grayA_to_RGBA_portable(dst, src, count); |
| } |
| |
| /*not static*/ inline void grayA_to_rgbA(uint32_t dst[], const uint8_t* src, int count) { |
| grayA_to_rgbA_portable(dst, src, count); |
| } |
| |
| /*not static*/ inline void inverted_CMYK_to_RGB1(uint32_t dst[], const uint32_t* src, int count) { |
| inverted_CMYK_to_RGB1_portable(dst, src, count); |
| } |
| |
| /*not static*/ inline void inverted_CMYK_to_BGR1(uint32_t dst[], const uint32_t* src, int count) { |
| inverted_CMYK_to_BGR1_portable(dst, src, count); |
| } |
| |
| #endif |
| |
| // Basically as above, but we found no benefit from AVX-512 for gray_to_RGB1. |
| static void gray_to_RGB1_portable(uint32_t dst[], const uint8_t* src, int count) { |
| for (int i = 0; i < count; i++) { |
| dst[i] = (uint32_t)0xFF << 24 |
| | (uint32_t)src[i] << 16 |
| | (uint32_t)src[i] << 8 |
| | (uint32_t)src[i] << 0; |
| } |
| } |
| #if defined(SK_ARM_HAS_NEON) |
| /*not static*/ inline void gray_to_RGB1(uint32_t dst[], const uint8_t* src, int count) { |
| while (count >= 16) { |
| // Load 16 pixels. |
| uint8x16_t gray = vld1q_u8(src); |
| |
| // Set each of the color channels. |
| uint8x16x4_t rgba; |
| rgba.val[0] = gray; |
| rgba.val[1] = gray; |
| rgba.val[2] = gray; |
| rgba.val[3] = vdupq_n_u8(0xFF); |
| |
| // Store 16 pixels. |
| vst4q_u8((uint8_t*) dst, rgba); |
| src += 16; |
| dst += 16; |
| count -= 16; |
| } |
| if (count >= 8) { |
| // Load 8 pixels. |
| uint8x8_t gray = vld1_u8(src); |
| |
| // Set each of the color channels. |
| uint8x8x4_t rgba; |
| rgba.val[0] = gray; |
| rgba.val[1] = gray; |
| rgba.val[2] = gray; |
| rgba.val[3] = vdup_n_u8(0xFF); |
| |
| // Store 8 pixels. |
| vst4_u8((uint8_t*) dst, rgba); |
| src += 8; |
| dst += 8; |
| count -= 8; |
| } |
| gray_to_RGB1_portable(dst, src, count); |
| } |
| #elif SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_AVX2 |
| /*not static*/ inline void gray_to_RGB1(uint32_t dst[], const uint8_t* src, int count) { |
| const __m256i alphas = _mm256_set1_epi8((uint8_t) 0xFF); |
| while (count >= 32) { |
| __m256i grays = _mm256_loadu_si256((const __m256i*) src); |
| |
| __m256i gg_lo = _mm256_unpacklo_epi8(grays, grays); |
| __m256i gg_hi = _mm256_unpackhi_epi8(grays, grays); |
| __m256i ga_lo = _mm256_unpacklo_epi8(grays, alphas); |
| __m256i ga_hi = _mm256_unpackhi_epi8(grays, alphas); |
| |
| __m256i ggga0 = _mm256_unpacklo_epi16(gg_lo, ga_lo); |
| __m256i ggga1 = _mm256_unpackhi_epi16(gg_lo, ga_lo); |
| __m256i ggga2 = _mm256_unpacklo_epi16(gg_hi, ga_hi); |
| __m256i ggga3 = _mm256_unpackhi_epi16(gg_hi, ga_hi); |
| |
| // Shuffle for pixel reorder. |
| // Note. 'p' stands for 'ggga' |
| // Before shuffle: |
| // ggga0 = p0 p1 p2 p3 | p16 p17 p18 p19 |
| // ggga1 = p4 p5 p6 p7 | p20 p21 p22 p23 |
| // ggga2 = p8 p9 p10 p11 | p24 p25 p26 p27 |
| // ggga3 = p12 p13 p14 p15 | p28 p29 p30 p31 |
| // |
| // After shuffle: |
| // ggga0_shuffle = p0 p1 p2 p3 | p4 p5 p6 p7 |
| // ggga1_shuffle = p8 p9 p10 p11 | p12 p13 p14 p15 |
| // ggga2_shuffle = p16 p17 p18 p19 | p20 p21 p22 p23 |
| // ggga3_shuffle = p24 p25 p26 p27 | p28 p29 p30 p31 |
| __m256i ggga0_shuffle = _mm256_permute2x128_si256(ggga0, ggga1, 0x20), |
| ggga1_shuffle = _mm256_permute2x128_si256(ggga2, ggga3, 0x20), |
| ggga2_shuffle = _mm256_permute2x128_si256(ggga0, ggga1, 0x31), |
| ggga3_shuffle = _mm256_permute2x128_si256(ggga2, ggga3, 0x31); |
| |
| _mm256_storeu_si256((__m256i*) (dst + 0), ggga0_shuffle); |
| _mm256_storeu_si256((__m256i*) (dst + 8), ggga1_shuffle); |
| _mm256_storeu_si256((__m256i*) (dst + 16), ggga2_shuffle); |
| _mm256_storeu_si256((__m256i*) (dst + 24), ggga3_shuffle); |
| |
| src += 32; |
| dst += 32; |
| count -= 32; |
| } |
| gray_to_RGB1_portable(dst, src, count); |
| } |
| #elif SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3 // TODO: just check >= SSE2? |
| /*not static*/ inline void gray_to_RGB1(uint32_t dst[], const uint8_t* src, int count) { |
| const __m128i alphas = _mm_set1_epi8((uint8_t) 0xFF); |
| while (count >= 16) { |
| __m128i grays = _mm_loadu_si128((const __m128i*) src); |
| |
| __m128i gg_lo = _mm_unpacklo_epi8(grays, grays); |
| __m128i gg_hi = _mm_unpackhi_epi8(grays, grays); |
| __m128i ga_lo = _mm_unpacklo_epi8(grays, alphas); |
| __m128i ga_hi = _mm_unpackhi_epi8(grays, alphas); |
| |
| __m128i ggga0 = _mm_unpacklo_epi16(gg_lo, ga_lo); |
| __m128i ggga1 = _mm_unpackhi_epi16(gg_lo, ga_lo); |
| __m128i ggga2 = _mm_unpacklo_epi16(gg_hi, ga_hi); |
| __m128i ggga3 = _mm_unpackhi_epi16(gg_hi, ga_hi); |
| |
| _mm_storeu_si128((__m128i*) (dst + 0), ggga0); |
| _mm_storeu_si128((__m128i*) (dst + 4), ggga1); |
| _mm_storeu_si128((__m128i*) (dst + 8), ggga2); |
| _mm_storeu_si128((__m128i*) (dst + 12), ggga3); |
| |
| src += 16; |
| dst += 16; |
| count -= 16; |
| } |
| gray_to_RGB1_portable(dst, src, count); |
| } |
| #else |
| /*not static*/ inline void gray_to_RGB1(uint32_t dst[], const uint8_t* src, int count) { |
| gray_to_RGB1_portable(dst, src, count); |
| } |
| #endif |
| |
| // Again as above, this time not even finding benefit from AVX2 for RGB_to_{RGB,BGR}1. |
| static void RGB_to_RGB1_portable(uint32_t dst[], const uint8_t* src, int count) { |
| for (int i = 0; i < count; i++) { |
| uint8_t r = src[0], |
| g = src[1], |
| b = src[2]; |
| src += 3; |
| dst[i] = (uint32_t)0xFF << 24 |
| | (uint32_t)b << 16 |
| | (uint32_t)g << 8 |
| | (uint32_t)r << 0; |
| } |
| } |
| static void RGB_to_BGR1_portable(uint32_t dst[], const uint8_t* src, int count) { |
| for (int i = 0; i < count; i++) { |
| uint8_t r = src[0], |
| g = src[1], |
| b = src[2]; |
| src += 3; |
| dst[i] = (uint32_t)0xFF << 24 |
| | (uint32_t)r << 16 |
| | (uint32_t)g << 8 |
| | (uint32_t)b << 0; |
| } |
| } |
| #if defined(SK_ARM_HAS_NEON) |
| static void insert_alpha_should_swaprb(bool kSwapRB, |
| uint32_t dst[], const uint8_t* src, int count) { |
| while (count >= 16) { |
| // Load 16 pixels. |
| uint8x16x3_t rgb = vld3q_u8(src); |
| |
| // Insert an opaque alpha channel and swap if needed. |
| uint8x16x4_t rgba; |
| if (kSwapRB) { |
| rgba.val[0] = rgb.val[2]; |
| rgba.val[2] = rgb.val[0]; |
| } else { |
| rgba.val[0] = rgb.val[0]; |
| rgba.val[2] = rgb.val[2]; |
| } |
| rgba.val[1] = rgb.val[1]; |
| rgba.val[3] = vdupq_n_u8(0xFF); |
| |
| // Store 16 pixels. |
| vst4q_u8((uint8_t*) dst, rgba); |
| src += 16*3; |
| dst += 16; |
| count -= 16; |
| } |
| |
| if (count >= 8) { |
| // Load 8 pixels. |
| uint8x8x3_t rgb = vld3_u8(src); |
| |
| // Insert an opaque alpha channel and swap if needed. |
| uint8x8x4_t rgba; |
| if (kSwapRB) { |
| rgba.val[0] = rgb.val[2]; |
| rgba.val[2] = rgb.val[0]; |
| } else { |
| rgba.val[0] = rgb.val[0]; |
| rgba.val[2] = rgb.val[2]; |
| } |
| rgba.val[1] = rgb.val[1]; |
| rgba.val[3] = vdup_n_u8(0xFF); |
| |
| // Store 8 pixels. |
| vst4_u8((uint8_t*) dst, rgba); |
| src += 8*3; |
| dst += 8; |
| count -= 8; |
| } |
| |
| // Call portable code to finish up the tail of [0,8) pixels. |
| auto proc = kSwapRB ? RGB_to_BGR1_portable : RGB_to_RGB1_portable; |
| proc(dst, src, count); |
| } |
| |
| /*not static*/ inline void RGB_to_RGB1(uint32_t dst[], const uint8_t* src, int count) { |
| insert_alpha_should_swaprb(false, dst, src, count); |
| } |
| /*not static*/ inline void RGB_to_BGR1(uint32_t dst[], const uint8_t* src, int count) { |
| insert_alpha_should_swaprb(true, dst, src, count); |
| } |
| #elif SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3 |
| static void insert_alpha_should_swaprb(bool kSwapRB, |
| uint32_t dst[], const uint8_t* src, int count) { |
| const __m128i alphaMask = _mm_set1_epi32(0xFF000000); |
| __m128i expand; |
| const uint8_t X = 0xFF; // Used a placeholder. The value of X is irrelevant. |
| if (kSwapRB) { |
| expand = _mm_setr_epi8(2,1,0,X, 5,4,3,X, 8,7,6,X, 11,10,9,X); |
| } else { |
| expand = _mm_setr_epi8(0,1,2,X, 3,4,5,X, 6,7,8,X, 9,10,11,X); |
| } |
| |
| while (count >= 6) { |
| // Load a vector. While this actually contains 5 pixels plus an |
| // extra component, we will discard all but the first four pixels on |
| // this iteration. |
| __m128i rgb = _mm_loadu_si128((const __m128i*) src); |
| |
| // Expand the first four pixels to RGBX and then mask to RGB(FF). |
| __m128i rgba = _mm_or_si128(_mm_shuffle_epi8(rgb, expand), alphaMask); |
| |
| // Store 4 pixels. |
| _mm_storeu_si128((__m128i*) dst, rgba); |
| |
| src += 4*3; |
| dst += 4; |
| count -= 4; |
| } |
| |
| // Call portable code to finish up the tail of [0,4) pixels. |
| auto proc = kSwapRB ? RGB_to_BGR1_portable : RGB_to_RGB1_portable; |
| proc(dst, src, count); |
| } |
| |
| /*not static*/ inline void RGB_to_RGB1(uint32_t dst[], const uint8_t* src, int count) { |
| insert_alpha_should_swaprb(false, dst, src, count); |
| } |
| /*not static*/ inline void RGB_to_BGR1(uint32_t dst[], const uint8_t* src, int count) { |
| insert_alpha_should_swaprb(true, dst, src, count); |
| } |
| #else |
| /*not static*/ inline void RGB_to_RGB1(uint32_t dst[], const uint8_t* src, int count) { |
| RGB_to_RGB1_portable(dst, src, count); |
| } |
| /*not static*/ inline void RGB_to_BGR1(uint32_t dst[], const uint8_t* src, int count) { |
| RGB_to_BGR1_portable(dst, src, count); |
| } |
| #endif |
| |
| } // namespace SK_OPTS_NS |
| |
| #endif // SkSwizzler_opts_DEFINED |
