File: vp9_reference_frame_vector.cc

package info (click to toggle)
chromium 145.0.7632.159-1
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 5,976,224 kB
  • sloc: cpp: 36,198,469; ansic: 7,634,080; javascript: 3,564,060; python: 1,649,622; xml: 838,470; asm: 717,087; pascal: 185,708; sh: 88,786; perl: 88,718; objc: 79,984; sql: 59,811; cs: 42,452; fortran: 24,101; makefile: 21,144; tcl: 15,277; php: 14,022; yacc: 9,066; ruby: 7,553; awk: 3,720; lisp: 3,233; lex: 1,328; ada: 727; jsp: 228; sed: 36
file content (44 lines) | stat: -rw-r--r-- 1,210 bytes parent folder | download | duplicates (11) 
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
39
40
41
42
43
44
 
// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "media/gpu/vp9_reference_frame_vector.h"

#include <bitset>

#include "media/gpu/vp9_picture.h"

namespace media {

Vp9ReferenceFrameVector::Vp9ReferenceFrameVector() {
  DETACH_FROM_SEQUENCE(sequence_checker_);
}

Vp9ReferenceFrameVector::~Vp9ReferenceFrameVector() = default;

// Refreshes |reference_frames_| slots with the current |pic|s frame header.
void Vp9ReferenceFrameVector::Refresh(scoped_refptr<VP9Picture> pic) {
  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
  DCHECK(pic);
  const std::bitset<kVp9NumRefFrames> refresh_frame_flags(
      pic->frame_hdr->refresh_frame_flags);

  for (size_t i = 0; i < kVp9NumRefFrames; ++i) {
    if (refresh_frame_flags[i])
      reference_frames_[i] = pic;
  }
}

void Vp9ReferenceFrameVector::Clear() {
  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
  reference_frames_.fill(nullptr);
}

scoped_refptr<VP9Picture> Vp9ReferenceFrameVector::GetFrame(
    size_t index) const {
  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);

  return reference_frames_[index];
}

}  // namespace media