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// Copyright 2015 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 "third_party/blink/renderer/platform/graphics/bitmap_image_metrics.h"
#include "base/metrics/histogram_base.h"
#include "base/numerics/safe_conversions.h"
#include "third_party/blink/renderer/platform/geometry/int_size.h"
#include "third_party/blink/renderer/platform/graphics/color_space_gamut.h"
#include "third_party/blink/renderer/platform/instrumentation/histogram.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
#include "third_party/blink/renderer/platform/wtf/threading.h"
namespace blink {
void BitmapImageMetrics::CountDecodedImageType(const String& type) {
DecodedImageType decoded_image_type =
type == "jpg"
? kImageJPEG
: type == "png"
? kImagePNG
: type == "gif"
? kImageGIF
: type == "webp"
? kImageWebP
: type == "ico"
? kImageICO
: type == "bmp"
? kImageBMP
: DecodedImageType::kImageUnknown;
DEFINE_THREAD_SAFE_STATIC_LOCAL(
EnumerationHistogram, decoded_image_type_histogram,
("Blink.DecodedImageType", kDecodedImageTypeEnumEnd));
decoded_image_type_histogram.Count(decoded_image_type);
}
void BitmapImageMetrics::CountImageOrientation(
const ImageOrientationEnum orientation) {
DEFINE_THREAD_SAFE_STATIC_LOCAL(
EnumerationHistogram, orientation_histogram,
("Blink.DecodedImage.Orientation", kImageOrientationEnumEnd));
orientation_histogram.Count(orientation);
}
void BitmapImageMetrics::CountImageDensityCorrection(bool density_correction_present) {
DEFINE_THREAD_SAFE_STATIC_LOCAL(
BooleanHistogram, density_correction_histogram,
("Blink.DecodedImage.DensitySizeCorrectionDetected"));
density_correction_histogram.Count(density_correction_present);
}
void BitmapImageMetrics::CountImageJpegDensity(int image_min_side,
uint64_t density_centi_bpp,
size_t image_size_bytes) {
// All bpp samples are reported in the range 0.01 to 10 bpp as integer number
// of 0.01 bpp. We don't report for any sample for small images (0 to 99px on
// the smallest dimension).
//
// The histogram JpegDensity.KiBWeighted reports the number of KiB decoded for
// a given bpp value.
if (image_min_side >= 100) {
DEFINE_THREAD_SAFE_STATIC_LOCAL(
CustomCountHistogram, density_histogram,
("Blink.DecodedImage.JpegDensity.KiBWeighted", 1, 1000, 100));
int image_size_kib = (image_size_bytes + 512) / 1024;
if (image_size_kib > 0) {
density_histogram.CountMany(
base::saturated_cast<base::Histogram::Sample>(density_centi_bpp),
image_size_kib);
}
}
}
void BitmapImageMetrics::CountJpegArea(const IntSize& size) {
DEFINE_THREAD_SAFE_STATIC_LOCAL(
CustomCountHistogram, image_area_histogram,
("Blink.ImageDecoders.Jpeg.Area", 1 /* min */, 8192 * 8192 /* max */,
100 /* bucket_count */));
// A base::HistogramBase::Sample may not fit |size.Area()|. Hence the use of
// saturated_cast.
image_area_histogram.Count(
base::saturated_cast<base::HistogramBase::Sample>(size.Area()));
}
void BitmapImageMetrics::CountJpegColorSpace(JpegColorSpace color_space) {
DEFINE_THREAD_SAFE_STATIC_LOCAL(
EnumerationHistogram, color_space_histogram,
("Blink.ImageDecoders.Jpeg.ColorSpace", JpegColorSpace::kMaxValue));
color_space_histogram.Count(color_space);
}
} // namespace blink
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