| /* |
| * Copyright 2009 The Android Open Source Project |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "include/encode/SkJpegEncoder.h" |
| #include "include/encode/SkPngEncoder.h" |
| #include "include/encode/SkWebpEncoder.h" |
| #include "src/images/SkImageEncoderPriv.h" |
| |
| #ifndef SK_ENCODE_JPEG |
| bool SkJpegEncoder::Encode(SkWStream*, const SkPixmap&, const Options&) { return false; } |
| std::unique_ptr<SkEncoder> SkJpegEncoder::Make(SkWStream*, const SkPixmap&, const Options&) { |
| return nullptr; |
| } |
| #endif |
| |
| #ifndef SK_ENCODE_PNG |
| bool SkPngEncoder::Encode(SkWStream*, const SkPixmap&, const Options&) { return false; } |
| std::unique_ptr<SkEncoder> SkPngEncoder::Make(SkWStream*, const SkPixmap&, const Options&) { |
| return nullptr; |
| } |
| #endif |
| |
| #ifndef SK_ENCODE_WEBP |
| bool SkWebpEncoder::Encode(SkWStream*, const SkPixmap&, const Options&) { return false; } |
| #endif |
| |
| bool SkEncodeImage(SkWStream* dst, const SkPixmap& src, |
| SkEncodedImageFormat format, int quality) { |
| #ifdef SK_USE_CG_ENCODER |
| (void)quality; |
| return SkEncodeImageWithCG(dst, src, format); |
| #elif SK_USE_WIC_ENCODER |
| return SkEncodeImageWithWIC(dst, src, format, quality); |
| #else |
| switch(format) { |
| case SkEncodedImageFormat::kJPEG: { |
| SkJpegEncoder::Options opts; |
| opts.fQuality = quality; |
| return SkJpegEncoder::Encode(dst, src, opts); |
| } |
| case SkEncodedImageFormat::kPNG: { |
| SkPngEncoder::Options opts; |
| return SkPngEncoder::Encode(dst, src, opts); |
| } |
| case SkEncodedImageFormat::kWEBP: { |
| SkWebpEncoder::Options opts; |
| if (quality == 100) { |
| opts.fCompression = SkWebpEncoder::Compression::kLossless; |
| // Note: SkEncodeImage treats 0 quality as the lowest quality |
| // (greatest compression) and 100 as the highest quality (least |
| // compression). For kLossy, this matches libwebp's |
| // interpretation, so it is passed directly to libwebp. But |
| // with kLossless, libwebp always creates the highest quality |
| // image. In this case, fQuality is reinterpreted as how much |
| // effort (time) to put into making a smaller file. This API |
| // does not provide a way to specify this value (though it can |
| // be specified by using SkWebpEncoder::Encode) so we have to |
| // pick one arbitrarily. This value matches that chosen by |
| // blink::ImageEncoder::ComputeWebpOptions as well |
| // WebPConfigInit. |
| opts.fQuality = 75; |
| } else { |
| opts.fCompression = SkWebpEncoder::Compression::kLossy; |
| opts.fQuality = quality; |
| } |
| return SkWebpEncoder::Encode(dst, src, opts); |
| } |
| default: |
| return false; |
| } |
| #endif |
| } |
| |
| bool SkEncoder::encodeRows(int numRows) { |
| SkASSERT(numRows > 0 && fCurrRow < fSrc.height()); |
| if (numRows <= 0 || fCurrRow >= fSrc.height()) { |
| return false; |
| } |
| |
| if (fCurrRow + numRows > fSrc.height()) { |
| numRows = fSrc.height() - fCurrRow; |
| } |
| |
| if (!this->onEncodeRows(numRows)) { |
| // If we fail, short circuit any future calls. |
| fCurrRow = fSrc.height(); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| sk_sp<SkData> SkEncodePixmap(const SkPixmap& src, SkEncodedImageFormat format, int quality) { |
| SkDynamicMemoryWStream stream; |
| return SkEncodeImage(&stream, src, format, quality) ? stream.detachAsData() : nullptr; |
| } |
| |
| sk_sp<SkData> SkEncodeBitmap(const SkBitmap& src, SkEncodedImageFormat format, int quality) { |
| SkPixmap pixmap; |
| return src.peekPixels(&pixmap) ? SkEncodePixmap(pixmap, format, quality) : nullptr; |
| } |