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- // 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_
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