15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (c) 2011, Google Inc. All rights reserved. 35c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Redistribution and use in source and binary forms, with or without 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modification, are permitted provided that the following conditions are 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * met: 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * * Redistributions of source code must retain the above copyright 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer. 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * * Redistributions in binary form must reproduce the above 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * copyright notice, this list of conditions and the following disclaimer 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * in the documentation and/or other materials provided with the 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * distribution. 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * * Neither the name of Google Inc. nor the names of its 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * contributors may be used to endorse or promote products derived from 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * this software without specific prior written permission. 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 305c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include "config.h" 32a854de003a23bf3c7f95ec0f8154ada64092ff5cTorne (Richard Coles)#include "platform/image-encoders/skia/WEBPImageEncoder.h" 335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 345c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include "SkBitmap.h" 351e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles)#include "platform/geometry/IntSize.h" 36a854de003a23bf3c7f95ec0f8154ada64092ff5cTorne (Richard Coles)#include "platform/graphics/ImageBuffer.h" 375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include "webp/encode.h" 385c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 395c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)typedef int (*WebPImporter)(WebPPicture* const, const uint8_t* const data, int rowStride); 405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 41c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)namespace blink { 425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 435c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)static int writeOutput(const uint8_t* data, size_t size, const WebPPicture* const picture) 445c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 455c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) static_cast<Vector<unsigned char>*>(picture->custom_ptr)->append(data, size); 465c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return 1; 475c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 485c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 495c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)static bool rgbPictureImport(const unsigned char* pixels, bool premultiplied, WebPImporter importRGBX, WebPImporter importRGB, WebPPicture* picture) 505c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 515c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (premultiplied) 525c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return importRGBX(picture, pixels, picture->width * 4); 535c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 545c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) // Write the RGB pixels to an rgb data buffer, alpha premultiplied, then import the rgb data. 555c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 565c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) Vector<unsigned char> rgb; 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) size_t pixelCount = picture->height * picture->width; 585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) rgb.reserveInitialCapacity(pixelCount * 3); 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 605c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) for (unsigned char* data = rgb.data(); pixelCount-- > 0; pixels += 4) { 615c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) unsigned char alpha = pixels[3]; 625c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (alpha != 255) { 635c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) *data++ = SkMulDiv255Round(pixels[0], alpha); 645c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) *data++ = SkMulDiv255Round(pixels[1], alpha); 655c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) *data++ = SkMulDiv255Round(pixels[2], alpha); 665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } else { 675c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) *data++ = pixels[0]; 685c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) *data++ = pixels[1]; 695c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) *data++ = pixels[2]; 705c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 715c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 725c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 735c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return importRGB(picture, rgb.data(), picture->width * 3); 745c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 755c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 765c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)template <bool Premultiplied> inline bool importPictureBGRX(const unsigned char* pixels, WebPPicture* picture) 775c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 785c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return rgbPictureImport(pixels, Premultiplied, &WebPPictureImportBGRX, &WebPPictureImportBGR, picture); 795c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 805c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 815c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)template <bool Premultiplied> inline bool importPictureRGBX(const unsigned char* pixels, WebPPicture* picture) 825c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 835c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return rgbPictureImport(pixels, Premultiplied, &WebPPictureImportRGBX, &WebPPictureImportRGB, picture); 845c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 855c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 865c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)static bool encodePixels(IntSize imageSize, const unsigned char* pixels, bool premultiplied, int quality, Vector<unsigned char>* output) 875c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 885c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) WebPConfig config; 895c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (!WebPConfigInit(&config)) 905c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return false; 915c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) WebPPicture picture; 925c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (!WebPPictureInit(&picture)) 935c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return false; 945c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 955c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) imageSize.clampNegativeToZero(); 965c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (!imageSize.width() || imageSize.width() > WEBP_MAX_DIMENSION) 975c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return false; 985c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) picture.width = imageSize.width(); 995c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (!imageSize.height() || imageSize.height() > WEBP_MAX_DIMENSION) 1005c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return false; 1015c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) picture.height = imageSize.height(); 1025c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1035c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (premultiplied && !importPictureBGRX<true>(pixels, &picture)) 1045c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return false; 1055c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (!premultiplied && !importPictureRGBX<false>(pixels, &picture)) 1065c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return false; 1075c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1085c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) picture.custom_ptr = output; 1095c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) picture.writer = &writeOutput; 1105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) config.quality = quality; 1115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) config.method = 3; 1125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) bool success = WebPEncode(&config, &picture); 1145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) WebPPictureFree(&picture); 1155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return success; 1165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 1175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)bool WEBPImageEncoder::encode(const SkBitmap& bitmap, int quality, Vector<unsigned char>* output) 1195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 1205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) SkAutoLockPixels bitmapLock(bitmap); 1215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 122197021e6b966cfb06891637935ef33fff06433d1Ben Murdoch if (bitmap.colorType() != kN32_SkColorType || !bitmap.getPixels()) 1235c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return false; // Only support 32 bit/pixel skia bitmaps. 1245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 1255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return encodePixels(IntSize(bitmap.width(), bitmap.height()), static_cast<unsigned char *>(bitmap.getPixels()), true, quality, output); 1265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 1275c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 12851b2906e11752df6c18351cf520e30522d3b53a1Torne (Richard Coles)bool WEBPImageEncoder::encode(const ImageDataBuffer& imageData, int quality, Vector<unsigned char>* output) 1295c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 13051b2906e11752df6c18351cf520e30522d3b53a1Torne (Richard Coles) return encodePixels(imageData.size(), imageData.data(), false, quality, output); 1315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 1325c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 133c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)} // namespace blink 134