Exemple #1
0
NativeImagePtr BitmapImage::frameImageAtIndex(size_t index, float presentationScaleHint)
{
    if (index >= frameCount())
        return nullptr;

    SubsamplingLevel subsamplingLevel = m_source.subsamplingLevelForScale(presentationScaleHint);

    // We may have cached a frame with a higher subsampling level, in which case we need to
    // re-decode with a lower level.
    if (index < m_frames.size() && m_frames[index].m_image && subsamplingLevel < m_frames[index].m_subsamplingLevel) {
        // If the image is already cached, but at too small a size, re-decode a larger version.
        int sizeChange = -m_frames[index].m_frameBytes;
        m_frames[index].clear(true);
        invalidatePlatformData();
        m_decodedSize += sizeChange;
        if (imageObserver())
            imageObserver()->decodedSizeChanged(this, sizeChange);
    }

    // If we haven't fetched a frame yet, do so.
    if (index >= m_frames.size() || !m_frames[index].m_image)
        cacheFrame(index, subsamplingLevel, CacheMetadataAndFrame);

    return m_frames[index].m_image;
}
Exemple #2
0
void BitmapImage::destroyDecodedData(bool incremental)
{
    // Destroy the cached images and release them.
    if (m_frames.size()) {
        int sizeChange = 0;
        int frameSize = m_size.width() * m_size.height() * 4;
        for (unsigned i = incremental ? m_frames.size() - 1 : 0; i < m_frames.size(); i++) {
            if (m_frames[i].m_frame) {
                sizeChange -= frameSize;
                m_frames[i].clear();
            }
        }

        // We just always invalidate our platform data, even in the incremental case.
        // This could be better, but it's not a big deal.
        m_isSolidColor = false;
        invalidatePlatformData();
        
        if (sizeChange) {
            m_decodedSize += sizeChange;
            if (imageObserver())
                imageObserver()->decodedSizeChanged(this, sizeChange);
        }
        
        if (!incremental) {
            // Reset the image source, since Image I/O has an underlying cache that it uses
            // while animating that it seems to never clear.
            m_source.clear();
            m_source.setData(m_data.get(), m_allDataReceived);
        }
    }
}
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);
}
Exemple #4
0
void BitmapImage::destroyMetadataAndNotify(unsigned frameBytesCleared)
{
    m_isSolidColor = false;
    m_checkedForSolidColor = false;
    invalidatePlatformData();

    ASSERT(m_decodedSize >= frameBytesCleared);
    m_decodedSize -= frameBytesCleared;
    if (frameBytesCleared > 0) {
        frameBytesCleared += m_decodedPropertiesSize;
        m_decodedPropertiesSize = 0;
    }
    if (frameBytesCleared && imageObserver())
        imageObserver()->decodedSizeChanged(this, -safeCast<int>(frameBytesCleared));
}
Exemple #5
0
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);
}
Exemple #6
0
void BitmapImage::destroyMetadataAndNotify(unsigned frameBytesCleared, ClearedSource clearedSource)
{
    m_solidColor = Nullopt;
    invalidatePlatformData();

    ASSERT(m_decodedSize >= frameBytesCleared);
    m_decodedSize -= frameBytesCleared;

    // Clearing the ImageSource destroys the extra decoded data used for determining image properties.
    if (clearedSource == ClearedSource::Yes) {
        frameBytesCleared += m_decodedPropertiesSize;
        m_decodedPropertiesSize = 0;
    }

    if (frameBytesCleared && imageObserver())
        imageObserver()->decodedSizeChanged(this, -safeCast<int>(frameBytesCleared));
}
Exemple #7
0
BitmapImage::~BitmapImage()
{
    invalidatePlatformData();
    stopAnimation();
}