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/*
* 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/core/SkImageEncoder.h"
#include "include/codec/SkEncodedImageFormat.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkData.h"
#include "include/core/SkPixmap.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkStream.h"
#include "include/core/SkTypes.h"
#include "include/encode/SkJpegEncoder.h"
#include "include/encode/SkPngEncoder.h"
#include "include/encode/SkWebpEncoder.h"
#if SK_ENABLE_NDK_IMAGES || SK_USE_CG_ENCODER || SK_USE_WIC_ENCODER
#include "src/encode/SkImageEncoderPriv.h"
#endif
#if !defined(SK_ENCODE_JPEG)|| !defined(SK_ENCODE_PNG) || !defined(SK_ENCODE_WEBP)
#include <memory>
class SkEncoder;
#endif
#if !defined(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
#if !defined(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
#if !defined(SK_ENCODE_WEBP)
bool SkWebpEncoder::Encode(SkWStream*, const SkPixmap&, const Options&) { return false; }
#endif
bool SkEncodeImage(SkWStream* dst, const SkBitmap& src, SkEncodedImageFormat f, int q) {
SkPixmap pixmap;
return src.peekPixels(&pixmap) && SkEncodeImage(dst, pixmap, f, q);
}
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);
#elif SK_ENABLE_NDK_IMAGES
return SkEncodeImageWithNDK(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
}
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;
}
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