void BitmapImage::cacheFrame(size_t index)
{
size_t numFrames = frameCount();
ASSERT(m_decodedSize == 0 || numFrames > 1);
if (m_frames.size() < numFrames)
m_frames.grow(numFrames);
m_frames[index].m_frame = m_source.createFrameAtIndex(index);
if (numFrames == 1 && m_frames[index].m_frame)
checkForSolidColor();
m_frames[index].m_haveMetadata = true;
m_frames[index].m_isComplete = m_source.frameIsCompleteAtIndex(index);
if (repetitionCount(false) != cAnimationNone)
m_frames[index].m_duration = m_source.frameDurationAtIndex(index);
m_frames[index].m_hasAlpha = m_source.frameHasAlphaAtIndex(index);
const IntSize frameSize(index ? m_source.frameSizeAtIndex(index) : m_size);
if (frameSize != m_size)
m_hasUniformFrameSize = false;
if (m_frames[index].m_frame) {
const int deltaBytes = frameBytes(frameSize);
m_decodedSize += deltaBytes;
if (imageObserver())
imageObserver()->decodedSizeChanged(this, deltaBytes);
}
}
void BitmapImage::destroyDecodedDataIfNecessary(bool destroyAll)
{
// Animated images >5MB are considered large enough that we'll only hang on
// to one frame at a time.
static const unsigned cLargeAnimationCutoff = 5242880;
if (frameCount() * frameBytes(m_size) > cLargeAnimationCutoff)
destroyDecodedData(destroyAll);
}
void BitmapImage::destroyMetadataAndNotify(int framesCleared)
{
m_isSolidColor = false;
invalidatePlatformData();
const int deltaBytes = framesCleared * -frameBytes(m_size);
m_decodedSize += deltaBytes;
if (deltaBytes && imageObserver())
imageObserver()->decodedSizeChanged(this, deltaBytes);
}
void BitmapImage::destroyMetadataAndNotify(int framesCleared)
{
m_isSolidColor = false;
m_checkedForSolidColor = false;
invalidatePlatformData();
int deltaBytes = framesCleared * -frameBytes(m_size);
m_decodedSize += deltaBytes;
if (framesCleared > 0) {
deltaBytes -= m_decodedPropertiesSize;
m_decodedPropertiesSize = 0;
}
if (deltaBytes && imageObserver())
imageObserver()->decodedSizeChanged(this, deltaBytes);
}