void ICOImageDecoder::decode(size_t index, bool onlySize)
{
if (failed())
return;
// If we couldn't decode the image but we've received all the data, decoding
// has failed.
if ((!decodeDirectory() || (!onlySize && !decodeAtIndex(index))) && isAllDataReceived())
setFailed();
// If we're done decoding this frame, we don't need the BMPImageReader or
// PNGImageDecoder anymore. (If we failed, these have already been
// cleared.)
else if ((m_frameBufferCache.size() > index) && (m_frameBufferCache[index].status() == ImageFrame::FrameComplete)) {
m_bmpReaders[index].clear();
m_pngDecoders[index].clear();
}
}
void ICOImageDecoder::decode(size_t index, bool onlySize)
{
if (failed())
return;
// If we couldn't decode the image but we've received all the data, decoding
// has failed.
if ((!decodeDirectory() || (!onlySize && !decodeAtIndex(index))) && isAllDataReceived())
setFailed();
// If we're done decoding this frame, we don't need the BMPImageReader or
// PNGImageDecoder anymore. (If we failed, these have already been
// cleared.)
else if ((m_frameBufferCache.size() > index) && m_frameBufferCache[index].isComplete()) {
m_bmpReaders[index] = nullptr;
m_pngDecoders[index] = nullptr;
}
if (m_frameBufferCache.isEmpty())
m_frameBufferCache.resize(m_dirEntries.size());
// CAUTION: We must not resize m_frameBufferCache again after this, as
// decodeAtIndex() may give a BMPImageReader a pointer to one of the
// entries.
}
void ICOImageDecoder::decode(size_t index, bool onlySize) {
if (failed())
return;
// Defensively clear the FastSharedBufferReader's cache, as another caller
// may have called SharedBuffer::mergeSegmentsIntoBuffer().
m_fastReader.clearCache();
// If we couldn't decode the image but we've received all the data, decoding
// has failed.
if ((!decodeDirectory() || (!onlySize && !decodeAtIndex(index))) &&
isAllDataReceived()) {
setFailed();
// If we're done decoding this frame, we don't need the BMPImageReader or
// PNGImageDecoder anymore. (If we failed, these have already been
// cleared.)
} else if ((m_frameBufferCache.size() > index) &&
(m_frameBufferCache[index].getStatus() ==
ImageFrame::FrameComplete)) {
m_bmpReaders[index].reset();
m_pngDecoders[index].reset();
}
}
