blob: 5be20b0f639ec202869b6d764bd767acdfe0f57f [file] [log] [blame]
// Copyright (c) 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gfx/image/image_util.h"
#import <Cocoa/Cocoa.h>
#include "base/mac/scoped_nsobject.h"
#include "ui/gfx/image/image.h"
namespace gfx {
bool JPEG1xEncodedDataFromImage(const Image& image,
int quality,
std::vector<unsigned char>* dst) {
if (!image.HasRepresentation(gfx::Image::kImageRepCocoa))
return JPEG1xEncodedDataFromSkiaRepresentation(image, quality, dst);
NSImage* nsImage = image.ToNSImage();
CGImageRef cgImage =
[nsImage CGImageForProposedRect:nil context:nil hints:nil];
base::scoped_nsobject<NSBitmapImageRep> rep(
[[NSBitmapImageRep alloc] initWithCGImage:cgImage]);
float compressionFactor = quality / 100.0;
NSDictionary* options = @{ NSImageCompressionFactor : @(compressionFactor)};
NSData* data =
[rep representationUsingType:NSJPEGFileType properties:options];
if ([data length] == 0)
return false;
dst->resize([data length]);
[data getBytes:&dst->at(0) length:[data length]];
return true;
} // end namespace gfx