// Copyright 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. #ifndef MEDIA_CAPABILITIES_BUCKET_UTILITY_H_ #define MEDIA_CAPABILITIES_BUCKET_UTILITY_H_ #include "media/base/media_export.h" #include "ui/gfx/geometry/size.h" namespace media { // Find the nearest "bucket" with dimensions >= |raw_size|. While smaller // buckets may more closely describe |raw_size|, the next largest bucket is // chosen to surface cutoff resolutions in HW-accelerated decoders. Exceeding // the HW cutoff will invoke the software fallback, giving potentially very // different decode performance at larger resolutions. Will return an empty // size if |raw_size| is too small to be bucketed. MEDIA_EXPORT gfx::Size GetSizeBucket(const gfx::Size& raw_size); // Round |raw_fps| to the nearest (smaller or larger) "bucket". FrameRates in // the same bucket should have nearly identical decode performance // characteristics. Bucketing helps avoid fragmentation of recorded stats. MEDIA_EXPORT int GetFpsBucket(double raw_fps); // Find the nearest WebRTC pixels bucket. Pixel buckets are used to quantize the // resolution to limit the amount of information that is stored and exposed // through the API. MEDIA_EXPORT int GetWebrtcPixelsBucket(int pixels); // Find the nearest WebRTC pixels bucket index. The index is used when logging // the performance of the API, if the index is changed the corresponding logging // code must also be changed. MEDIA_EXPORT int GetWebrtcPixelsBucketIndex(int pixels); } // namespace media #endif // MEDIA_CAPABILITIES_BUCKET_UTILITY_H_