1 /* 2 * Copyright 2023 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 #ifndef SkJpegGainmapEncoder_DEFINED 9 #define SkJpegGainmapEncoder_DEFINED 10 11 #include "include/encode/SkJpegEncoder.h" 12 13 class SkPixmap; 14 class SkWStream; 15 struct SkGainmapInfo; 16 17 class SK_API SkJpegGainmapEncoder { 18 public: 19 /** 20 * Encode a JpegR image to |dst|. 21 * 22 * The base image is specified by |base|, and |baseOptions| controls the encoding behavior for 23 * the base image. 24 * 25 * The gainmap image is specified by |gainmap|, and |gainmapOptions| controls the encoding 26 * behavior for the gainmap image. 27 * 28 * The rendering behavior of the gainmap image is provided in |gainmapInfo|. Not all gainmap 29 * based images are compatible with JpegR. If the image is not compatible with JpegR, then 30 * convert the gainmap to a format that is capable with JpegR. This conversion may result in 31 * less precise quantization of the gainmap image. 32 * 33 * Returns true on success. Returns false on an invalid or unsupported |src|. 34 */ 35 static bool EncodeJpegR(SkWStream* dst, 36 const SkPixmap& base, 37 const SkJpegEncoder::Options& baseOptions, 38 const SkPixmap& gainmap, 39 const SkJpegEncoder::Options& gainmapOptions, 40 const SkGainmapInfo& gainmapInfo); 41 42 /** 43 * Encode an HDRGM image to |dst|. 44 * 45 * The base image is specified by |base|, and |baseOptions| controls the encoding behavior for 46 * the base image. 47 * 48 * The gainmap image is specified by |gainmap|, and |gainmapOptions| controls the encoding 49 * behavior for the gainmap image. 50 * 51 * The rendering behavior of the gainmap image is provided in |gainmapInfo|. 52 * 53 * If |baseOptions| or |gainmapOptions| specify XMP metadata, then that metadata will be 54 * overwritten. 55 * 56 * Returns true on success. Returns false on an invalid or unsupported |src|. 57 */ 58 static bool EncodeHDRGM(SkWStream* dst, 59 const SkPixmap& base, 60 const SkJpegEncoder::Options& baseOptions, 61 const SkPixmap& gainmap, 62 const SkJpegEncoder::Options& gainmapOptions, 63 const SkGainmapInfo& gainmapInfo); 64 65 /** 66 * Write a Multi Picture Format containing the |imageCount| images specified by |images|. 67 */ 68 static bool MakeMPF(SkWStream* dst, const SkData** images, size_t imageCount); 69 }; 70 71 #endif 72