blob: b51619e8bce3b9a9c3104acc9d58faf4edc2f062 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
// Copyright 2017 The Chromium Authors
// 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_
|
