summaryrefslogtreecommitdiff
path: root/image/Image.cpp
blob: b757a60f71fcfc8eef7bd8eb0c13d5d5f960ac39 (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
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "Image.h"
#include "nsRefreshDriver.h"
#include "mozilla/TimeStamp.h"

namespace mozilla {
namespace image {

///////////////////////////////////////////////////////////////////////////////
// Memory Reporting
///////////////////////////////////////////////////////////////////////////////

ImageMemoryCounter::ImageMemoryCounter(Image* aImage,
                                       MallocSizeOf aMallocSizeOf,
                                       bool aIsUsed)
  : mIsUsed(aIsUsed)
{
  MOZ_ASSERT(aImage);

  // Extract metadata about the image.
  RefPtr<ImageURL> imageURL(aImage->GetURI());
  if (imageURL) {
    imageURL->GetSpec(mURI);
  }

  int32_t width = 0;
  int32_t height = 0;
  aImage->GetWidth(&width);
  aImage->GetHeight(&height);
  mIntrinsicSize.SizeTo(width, height);

  mType = aImage->GetType();

  // Populate memory counters for source and decoded data.
  mValues.SetSource(aImage->SizeOfSourceWithComputedFallback(aMallocSizeOf));
  aImage->CollectSizeOfSurfaces(mSurfaces, aMallocSizeOf);

  // Compute totals.
  for (const SurfaceMemoryCounter& surfaceCounter : mSurfaces) {
    mValues += surfaceCounter.Values();
  }
}


///////////////////////////////////////////////////////////////////////////////
// Image Base Types
///////////////////////////////////////////////////////////////////////////////

// Constructor
ImageResource::ImageResource(ImageURL* aURI) :
  mURI(aURI),
  mInnerWindowId(0),
  mAnimationConsumers(0),
  mAnimationMode(kNormalAnimMode),
  mInitialized(false),
  mAnimating(false),
  mError(false)
{ }

ImageResource::~ImageResource()
{
  // Ask our ProgressTracker to drop its weak reference to us.
  mProgressTracker->ResetImage();
}

void
ImageResource::IncrementAnimationConsumers()
{
  MOZ_ASSERT(NS_IsMainThread(), "Main thread only to encourage serialization "
                                "with DecrementAnimationConsumers");
  mAnimationConsumers++;
}

void
ImageResource::DecrementAnimationConsumers()
{
  MOZ_ASSERT(NS_IsMainThread(), "Main thread only to encourage serialization "
                                "with IncrementAnimationConsumers");
  MOZ_ASSERT(mAnimationConsumers >= 1,
             "Invalid no. of animation consumers!");
  mAnimationConsumers--;
}

nsresult
ImageResource::GetAnimationModeInternal(uint16_t* aAnimationMode)
{
  if (mError) {
    return NS_ERROR_FAILURE;
  }

  NS_ENSURE_ARG_POINTER(aAnimationMode);

  *aAnimationMode = mAnimationMode;
  return NS_OK;
}

nsresult
ImageResource::SetAnimationModeInternal(uint16_t aAnimationMode)
{
  if (mError) {
    return NS_ERROR_FAILURE;
  }

  NS_ASSERTION(aAnimationMode == kNormalAnimMode ||
               aAnimationMode == kDontAnimMode ||
               aAnimationMode == kLoopOnceAnimMode,
               "Wrong Animation Mode is being set!");

  mAnimationMode = aAnimationMode;

  return NS_OK;
}

bool
ImageResource::HadRecentRefresh(const TimeStamp& aTime)
{
  // Our threshold for "recent" is 1/2 of the default refresh-driver interval.
  // This ensures that we allow for frame rates at least as fast as the
  // refresh driver's default rate.
  static TimeDuration recentThreshold =
      TimeDuration::FromMilliseconds(nsRefreshDriver::DefaultInterval() / 2.0);

  if (!mLastRefreshTime.IsNull() &&
      aTime - mLastRefreshTime < recentThreshold) {
    return true;
  }

  // else, we can proceed with a refresh.
  // But first, update our last refresh time:
  mLastRefreshTime = aTime;
  return false;
}

void
ImageResource::EvaluateAnimation()
{
  if (!mAnimating && ShouldAnimate()) {
    nsresult rv = StartAnimation();
    mAnimating = NS_SUCCEEDED(rv);
  } else if (mAnimating && !ShouldAnimate()) {
    StopAnimation();
  }
}

} // namespace image
} // namespace mozilla