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- /*
- * Copyright 2008 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 "src/images/SkImageEncoderPriv.h"
- #if defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
- #include "include/core/SkBitmap.h"
- #include "include/core/SkData.h"
- #include "include/core/SkStream.h"
- #include "include/core/SkUnPreMultiply.h"
- #include "include/private/SkColorData.h"
- #include "include/private/SkTemplates.h"
- #include "include/utils/mac/SkCGUtils.h"
- #include "src/core/SkStreamPriv.h"
- #include "src/utils/mac/SkUniqueCFRef.h"
- #ifdef SK_BUILD_FOR_MAC
- #include <ApplicationServices/ApplicationServices.h>
- #endif
- #ifdef SK_BUILD_FOR_IOS
- #include <CoreGraphics/CoreGraphics.h>
- #include <ImageIO/ImageIO.h>
- #include <MobileCoreServices/MobileCoreServices.h>
- #endif
- static size_t consumer_put(void* info, const void* buffer, size_t count) {
- SkWStream* stream = reinterpret_cast<SkWStream*>(info);
- return stream->write(buffer, count) ? count : 0;
- }
- static void consumer_release(void* info) {
- // we do nothing, since by design we don't "own" the stream (i.e. info)
- }
- static SkUniqueCFRef<CGDataConsumerRef> SkStreamToCGDataConsumer(SkWStream* stream) {
- CGDataConsumerCallbacks procs;
- procs.putBytes = consumer_put;
- procs.releaseConsumer = consumer_release;
- // we don't own/reference the stream, so it our consumer must not live
- // longer that our caller's ownership of the stream
- return SkUniqueCFRef<CGDataConsumerRef>(CGDataConsumerCreate(stream, &procs));
- }
- static SkUniqueCFRef<CGImageDestinationRef> SkStreamToImageDestination(SkWStream* stream,
- CFStringRef type) {
- SkUniqueCFRef<CGDataConsumerRef> consumer = SkStreamToCGDataConsumer(stream);
- if (nullptr == consumer) {
- return nullptr;
- }
- return SkUniqueCFRef<CGImageDestinationRef>(
- CGImageDestinationCreateWithDataConsumer(consumer.get(), type, 1, nullptr));
- }
- /* Encode bitmaps via CGImageDestination. We setup a DataConsumer which writes
- to our SkWStream. Since we don't reference/own the SkWStream, our consumer
- must only live for the duration of the onEncode() method.
- */
- bool SkEncodeImageWithCG(SkWStream* stream, const SkPixmap& pixmap, SkEncodedImageFormat format) {
- SkBitmap bm;
- if (!bm.installPixels(pixmap)) {
- return false;
- }
- bm.setImmutable();
- CFStringRef type;
- switch (format) {
- case SkEncodedImageFormat::kICO:
- type = kUTTypeICO;
- break;
- case SkEncodedImageFormat::kBMP:
- type = kUTTypeBMP;
- break;
- case SkEncodedImageFormat::kGIF:
- type = kUTTypeGIF;
- break;
- case SkEncodedImageFormat::kJPEG:
- type = kUTTypeJPEG;
- break;
- case SkEncodedImageFormat::kPNG:
- // PNG encoding an ARGB_4444 bitmap gives the following errors in GM:
- // <Error>: CGImageDestinationAddImage image could not be converted to destination
- // format.
- // <Error>: CGImageDestinationFinalize image destination does not have enough images
- // So instead we copy to 8888.
- if (bm.colorType() == kARGB_4444_SkColorType) {
- SkBitmap bitmapN32;
- bitmapN32.allocPixels(bm.info().makeColorType(kN32_SkColorType));
- bm.readPixels(bitmapN32.info(), bitmapN32.getPixels(), bitmapN32.rowBytes(), 0, 0);
- bm.swap(bitmapN32);
- }
- type = kUTTypePNG;
- break;
- default:
- return false;
- }
- SkUniqueCFRef<CGImageDestinationRef> dst = SkStreamToImageDestination(stream, type);
- if (nullptr == dst) {
- return false;
- }
- SkUniqueCFRef<CGImageRef> image(SkCreateCGImageRef(bm));
- if (nullptr == image) {
- return false;
- }
- CGImageDestinationAddImage(dst.get(), image.get(), nullptr);
- return CGImageDestinationFinalize(dst.get());
- }
- #endif//defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS)
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