Mike Klein | 7af351a | 2018-07-27 09:54:43 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2018 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "../third_party/skcms/skcms.h" |
Mike Klein | fd731e4 | 2018-10-23 13:21:53 -0400 | [diff] [blame] | 9 | #include "SkCanvas.h" |
Mike Klein | 7af351a | 2018-07-27 09:54:43 -0400 | [diff] [blame] | 10 | #include "SkColorSpacePriv.h" |
| 11 | #include "SkData.h" |
| 12 | #include "SkImage.h" |
| 13 | #include "SkStream.h" |
Mike Klein | fd731e4 | 2018-10-23 13:21:53 -0400 | [diff] [blame] | 14 | #include "SkSurface.h" |
| 15 | |
| 16 | static void write_png(const char* path, sk_sp<SkImage> img) { |
| 17 | sk_sp<SkData> png = img->encodeToData(); |
| 18 | SkFILEWStream(path).write(png->data(), png->size()); |
| 19 | } |
Mike Klein | 7af351a | 2018-07-27 09:54:43 -0400 | [diff] [blame] | 20 | |
| 21 | int main(int argc, char** argv) { |
Mike Klein | 06a215b | 2018-09-06 14:21:09 -0400 | [diff] [blame] | 22 | const char* source_path = argc > 1 ? argv[1] : nullptr; |
| 23 | if (!source_path) { |
| 24 | SkDebugf("Please pass an image or profile to convert" |
| 25 | " as the first argument to this program.\n"); |
Mike Klein | 7af351a | 2018-07-27 09:54:43 -0400 | [diff] [blame] | 26 | return 1; |
| 27 | } |
| 28 | |
Mike Klein | 06a215b | 2018-09-06 14:21:09 -0400 | [diff] [blame] | 29 | const char* dst_profile_path = argc > 2 ? argv[2] : nullptr; |
| 30 | skcms_ICCProfile dst_profile = *skcms_sRGB_profile(); |
| 31 | if (dst_profile_path) { |
| 32 | sk_sp<SkData> blob = SkData::MakeFromFileName(dst_profile_path); |
| 33 | if (!skcms_Parse(blob->data(), blob->size(), &dst_profile)) { |
| 34 | SkDebugf("Can't parse %s as an ICC profile.\n", dst_profile_path); |
| 35 | return 1; |
| 36 | } |
| 37 | } |
| 38 | |
| 39 | auto blob = SkData::MakeFromFileName(source_path); |
| 40 | |
| 41 | skcms_ICCProfile src_profile; |
| 42 | if (skcms_Parse(blob->data(), blob->size(), &src_profile)) { |
| 43 | // Transform white, black, primaries, and primary complements. |
| 44 | float src[] = { |
| 45 | 0,0,0, |
| 46 | 1,1,1, |
| 47 | |
| 48 | 1,0,0, |
| 49 | 0,1,0, |
| 50 | 0,0,1, |
| 51 | |
| 52 | 0,1,1, |
| 53 | 1,0,1, |
| 54 | 1,1,0, |
| 55 | }; |
| 56 | float dst[24] = {0}; |
| 57 | |
| 58 | if (!skcms_Transform( |
| 59 | src, skcms_PixelFormat_RGB_fff, skcms_AlphaFormat_Unpremul, &src_profile, |
| 60 | dst, skcms_PixelFormat_RGB_fff, skcms_AlphaFormat_Unpremul, &dst_profile, |
| 61 | 8)) { |
| 62 | SkDebugf("Cannot transform.\n"); |
| 63 | return 1; |
| 64 | } |
| 65 | for (int i = 0; i < 8; i++) { |
| 66 | SkDebugf("(%g, %g, %g) --> (%+.4f, %+.4f, %+.4f)\n", |
| 67 | src[3*i+0], src[3*i+1], src[3*i+2], |
| 68 | dst[3*i+0], dst[3*i+1], dst[3*i+2]); |
| 69 | } |
| 70 | return 0; |
| 71 | } |
| 72 | |
| 73 | sk_sp<SkImage> image = SkImage::MakeFromEncoded(blob); |
Mike Klein | 7af351a | 2018-07-27 09:54:43 -0400 | [diff] [blame] | 74 | if (!image) { |
Mike Klein | 06a215b | 2018-09-06 14:21:09 -0400 | [diff] [blame] | 75 | SkDebugf("Couldn't decode %s as an SkImage or an ICC profile.\n", source_path); |
Mike Klein | 7af351a | 2018-07-27 09:54:43 -0400 | [diff] [blame] | 76 | return 1; |
| 77 | } |
| 78 | |
| 79 | image = image->makeRasterImage(); |
| 80 | if (!image) { |
| 81 | SkDebugf("Converting to raster image failed.\n"); |
| 82 | return 1; |
| 83 | } |
| 84 | |
| 85 | SkPixmap pixmap; |
| 86 | if (!image->peekPixels(&pixmap)) { |
| 87 | SkDebugf("We really should be able to peek raster pixels.\n"); |
| 88 | return 1; |
| 89 | } |
| 90 | |
Mike Klein | fd731e4 | 2018-10-23 13:21:53 -0400 | [diff] [blame] | 91 | sk_sp<SkColorSpace> dst_cs = SkColorSpace::Make(dst_profile); |
| 92 | if (!dst_cs) { |
| 93 | SkDebugf("We can't convert to this destination profile.\n"); |
| 94 | return 1; |
| 95 | } |
Mike Klein | 7af351a | 2018-07-27 09:54:43 -0400 | [diff] [blame] | 96 | |
Mike Klein | fd731e4 | 2018-10-23 13:21:53 -0400 | [diff] [blame] | 97 | { // transform with skcms |
| 98 | SkColorSpace* src_cs = image->colorSpace() ? image->colorSpace() |
| 99 | : sk_srgb_singleton(); |
| 100 | src_cs->toProfile(&src_profile); |
| 101 | |
| 102 | skcms_PixelFormat fmt; |
| 103 | switch (pixmap.colorType()) { |
| 104 | case kRGBA_8888_SkColorType: fmt = skcms_PixelFormat_RGBA_8888; break; |
| 105 | case kBGRA_8888_SkColorType: fmt = skcms_PixelFormat_BGRA_8888; break; |
| 106 | default: |
| 107 | SkDebugf("color type %d not yet supported, imgcvt.cpp needs an update.\n", |
| 108 | pixmap.colorType()); |
| 109 | return 1; |
| 110 | } |
| 111 | |
| 112 | if (pixmap.alphaType() != kPremul_SkAlphaType) { |
| 113 | SkDebugf("not premul, that's weird.\n"); |
Mike Klein | 7af351a | 2018-07-27 09:54:43 -0400 | [diff] [blame] | 114 | return 1; |
Mike Klein | fd731e4 | 2018-10-23 13:21:53 -0400 | [diff] [blame] | 115 | } |
| 116 | auto alpha = skcms_AlphaFormat_PremulAsEncoded; |
| 117 | |
| 118 | if (pixmap.rowBytes() != (size_t)pixmap.width() * pixmap.info().bytesPerPixel()) { |
| 119 | SkDebugf("not a tight pixmap, need a loop here\n"); |
| 120 | return 1; |
| 121 | } |
| 122 | |
| 123 | if (!skcms_Transform(pixmap.addr(), fmt,alpha, &src_profile, |
| 124 | pixmap.writable_addr(), fmt,alpha, &dst_profile, |
| 125 | pixmap.width() * pixmap.height())) { |
| 126 | SkDebugf("skcms_Transform() failed\n"); |
| 127 | return 1; |
| 128 | } |
| 129 | pixmap.setColorSpace(dst_cs); |
| 130 | |
| 131 | write_png("transformed-skcms.png", SkImage::MakeRasterCopy(pixmap)); |
Mike Klein | 7af351a | 2018-07-27 09:54:43 -0400 | [diff] [blame] | 132 | } |
| 133 | |
Mike Klein | fd731e4 | 2018-10-23 13:21:53 -0400 | [diff] [blame] | 134 | { // transform with writePixels() |
| 135 | sk_sp<SkSurface> surface = SkSurface::MakeRaster(pixmap.info().makeColorSpace(dst_cs)); |
| 136 | if (!surface) { |
| 137 | SkDebugf("couldn't create a surface\n"); |
| 138 | return 1; |
| 139 | } |
Mike Klein | 7af351a | 2018-07-27 09:54:43 -0400 | [diff] [blame] | 140 | |
Mike Klein | fd731e4 | 2018-10-23 13:21:53 -0400 | [diff] [blame] | 141 | surface->writePixels(pixmap, 0,0); |
| 142 | |
| 143 | write_png("transformed-writepixels.png", surface->makeImageSnapshot()); |
Mike Klein | 7af351a | 2018-07-27 09:54:43 -0400 | [diff] [blame] | 144 | } |
| 145 | |
Mike Klein | fd731e4 | 2018-10-23 13:21:53 -0400 | [diff] [blame] | 146 | { // transform by drawing |
| 147 | sk_sp<SkSurface> surface = SkSurface::MakeRaster(pixmap.info().makeColorSpace(dst_cs)); |
| 148 | if (!surface) { |
| 149 | SkDebugf("couldn't create a surface\n"); |
| 150 | return 1; |
| 151 | } |
Mike Klein | 7af351a | 2018-07-27 09:54:43 -0400 | [diff] [blame] | 152 | |
Mike Klein | fd731e4 | 2018-10-23 13:21:53 -0400 | [diff] [blame] | 153 | surface->getCanvas()->drawImage(image, 0,0); |
Mike Klein | 7af351a | 2018-07-27 09:54:43 -0400 | [diff] [blame] | 154 | |
Mike Klein | fd731e4 | 2018-10-23 13:21:53 -0400 | [diff] [blame] | 155 | write_png("transformed-draw.png", surface->makeImageSnapshot()); |
| 156 | } |
Mike Klein | 7af351a | 2018-07-27 09:54:43 -0400 | [diff] [blame] | 157 | |
| 158 | return 0; |
| 159 | } |