void PNGImageDecoder::decode(bool onlySize)
{
if (failed())
return;
if (!m_reader)
m_reader = adoptPtr(new PNGImageReader(this));
// If we couldn't decode the image but we've received all the data, decoding
// has failed.
if (!m_reader->decode(*m_data, onlySize) && isAllDataReceived())
setFailed();
// If we're done decoding the image, we don't need the PNGImageReader
// anymore. (If we failed, |m_reader| has already been cleared.)
else if (isComplete())
m_reader.clear();
}
void BMPImageDecoder::decode(bool onlySize)
{
#if PLATFORM(CHROMIUM)
TRACE_EVENT("BMPImageDecoder::decode", this, 0);
#endif
if (failed())
return;
// If we couldn't decode the image but we've received all the data, decoding
// has failed.
if (!decodeHelper(onlySize) && isAllDataReceived())
setFailed();
// If we're done decoding the image, we don't need the BMPImageReader
// anymore. (If we failed, |m_reader| has already been cleared.)
else if (!m_frameBufferCache.isEmpty() && (m_frameBufferCache.first().status() == ImageFrame::FrameComplete))
m_reader.clear();
}
bool ICOImageDecoder::processDirectory() {
// Read directory.
ASSERT(!m_decodedOffset);
if (m_data->size() < sizeOfDirectory)
return false;
const uint16_t fileType = readUint16(2);
m_dirEntriesCount = readUint16(4);
m_decodedOffset = sizeOfDirectory;
// See if this is an icon filetype we understand, and make sure we have at
// least one entry in the directory.
if (((fileType != ICON) && (fileType != CURSOR)) || (!m_dirEntriesCount))
return setFailed();
m_fileType = static_cast<FileType>(fileType);
return true;
}
void JPEGImageDecoder::decode(bool onlySize)
{
if (failed())
return;
if (!m_reader)
m_reader = adoptPtr(new JPEGImageReader(this));
// If we couldn't decode the image but we've received all the data, decoding
// has failed.
if (!m_reader->decode(*m_data, onlySize) && isAllDataReceived())
setFailed();
// If we're done decoding the image, we don't need the JPEGImageReader
// anymore. (If we failed, |m_reader| has already been cleared.)
else if (!m_frameBufferCache.isEmpty() && (m_frameBufferCache[0].status() == ImageFrame::FrameComplete))
m_reader.clear();
}
void PNGImageDecoder::decode(bool onlySize)
{
if (failed())
return;
if (!m_reader)
m_reader = adoptPtr(new PNGImageReader(this));
// If we couldn't decode the image but have received all the data, decoding
// has failed.
if (!m_reader->decode(*m_data, onlySize) && isAllDataReceived())
setFailed();
// If decoding is done or failed, we don't need the PNGImageReader anymore.
if (isComplete(this) || failed())
m_reader.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].status() == ImageFrame::FrameComplete)) {
m_bmpReaders[index] = nullptr;
m_pngDecoders[index] = nullptr;
}
}
CLSSIS3820ScalerDarkCurrentMeasurementAction::CLSSIS3820ScalerDarkCurrentMeasurementAction(CLSSIS3820ScalerDarkCurrentMeasurementActionInfo *info, QObject *parent) :
AMListAction3(info, AMListAction3::Sequential, parent)
{
CLSSIS3820Scaler *scaler = CLSBeamline::clsBeamline()->scaler();
double secondsDwell = scalerDarkCurrentMeasurementActionInfo()->dwellTime();
connect( this, SIGNAL(failed()), this, SLOT(onActionFailed()) );
if (scaler && scaler->isConnected() && secondsDwell > 0) {
// pre-measurement settings.
double oldDwell = scaler->dwellTime();
// first turn off beam.
// addSubAction(AMBeamline::bl()->createTurnOffBeamActions());
// set the scaler's dwell time to new time.
addSubAction(scaler->createDwellTimeAction3(secondsDwell));
// initiate a scaler measurement and wait until it is complete.
addSubAction(scaler->createStartAction3(true));
addSubAction(scaler->createWaitForDwellFinishedAction(secondsDwell + 5.0));
// notify attached and able scaler channel detectors that the latest measurement was a dark current measurement.
AMListAction3 *notifyChannelDetectors = new AMListAction3(new AMListActionInfo3("Set last measurement as dark current measurement", "Set last measurement as dark current measurement"));
for (int i = 0; i < scaler->channels().count(); i++) {
CLSSIS3820ScalerChannel *channel = scaler->channelAt(i);
if (channel && channel->isEnabled() && channel->detector() && channel->detector()->canDoDarkCurrentCorrection()) {
notifyChannelDetectors->addSubAction(channel->detector()->createSetLastMeasurementAsDarkCurrentAction());
}
}
addSubAction(notifyChannelDetectors);
// reset settings to pre-measurement conditions.
addSubAction(scaler->createDwellTimeAction3(oldDwell));
} else {
AMErrorMon::alert(this, CLSSIS3820SCALERDARKCURRENTMEASUREMENTACTION_SCALER_NOT_VALID, "Failed to complete dark current measurement--scaler not valid.");
setFailed();
}
}
ImageFrame* WEBPImageDecoder::frameBufferAtIndex(size_t index)
{
if (index >= frameCount())
return 0;
ImageFrame& frame = m_frameBufferCache[index];
if (frame.status() == ImageFrame::FrameComplete)
return &frame;
Vector<size_t> framesToDecode;
size_t frameToDecode = index;
do {
framesToDecode.append(frameToDecode);
frameToDecode = m_frameBufferCache[frameToDecode].requiredPreviousFrameIndex();
} while (frameToDecode != kNotFound && m_frameBufferCache[frameToDecode].status() != ImageFrame::FrameComplete);
ASSERT(m_demux);
for (size_t i = framesToDecode.size(); i > 0; --i) {
size_t frameIndex = framesToDecode[i - 1];
if ((m_formatFlags & ANIMATION_FLAG) && !initFrameBuffer(frameIndex))
return 0;
WebPIterator webpFrame;
if (!WebPDemuxGetFrame(m_demux, frameIndex + 1, &webpFrame))
return 0;
PlatformInstrumentation::willDecodeImage("WEBP");
decode(webpFrame.fragment.bytes, webpFrame.fragment.size, false, frameIndex);
PlatformInstrumentation::didDecodeImage();
WebPDemuxReleaseIterator(&webpFrame);
if (failed())
return 0;
// We need more data to continue decoding.
if (m_frameBufferCache[frameIndex].status() != ImageFrame::FrameComplete)
break;
}
// It is also a fatal error if all data is received and we have decoded all
// frames available but the file is truncated.
if (index >= m_frameBufferCache.size() - 1 && isAllDataReceived() && m_demux && m_demuxState != WEBP_DEMUX_DONE)
setFailed();
frame.notifyBitmapIfPixelsChanged();
return &frame;
}
void VESPERSSetStringAction::onValueChanged()
{
const AMProcessVariable *pv = ((AMPVControl *)(control_))->readPV();
QString string = VESPERS::pvToString(pv);
QString text = ((VESPERSSetStringActionInfo *)info())->text();
if (string == text){
AMErrorMon::debug(this, VESPERSSETSTRINGACTION_SUCCEEDED, QString("[SUCCEEDED] Set string. Desired: %1 Result: %2.").arg(text).arg(string));
setSucceeded();
}
else{
AMErrorMon::debug(this, VESPERSSETSTRINGACTION_FAILED, QString("[FAILED] Set string. Desired: %1 Result: %2.").arg(text).arg(string));
setFailed();
}
}
// TODO: Do not increment the m_frameBufferCache.size() by one but more than one
void ImageDecoderQt::forceLoadEverything()
{
int imageCount = 0;
do {
m_frameBufferCache.resize(++imageCount);
} while (internalHandleCurrentImage(imageCount - 1));
// If we failed decoding the first image we actually
// have no images and need to set the failed bit.
// Otherwise, we want to forget about
// the last attempt to decode a image.
m_frameBufferCache.resize(imageCount - 1);
for (size_t i = 0; i < m_frameBufferCache.size(); ++i)
m_frameBufferCache[i].setPremultiplyAlpha(m_premultiplyAlpha);
if (imageCount == 1)
setFailed();
}
void AMScanAction::onControllerInitialized()
{
if (state() == AMAction3::Skipping){
disconnect(controller_, SIGNAL(cancelled()), this, SLOT(onControllerCancelled()));
connect(controller_, SIGNAL(cancelled()), this, SLOT(onControllerSucceeded()));
controller_->cancel();
}
else if (!controller_->start()){
AMErrorMon::alert(this, AMSCANACTION_CANT_START_CONTROLLER, "Could not start the scan controller.");
setFailed();
}
else {
setStarted();
}
}
void ImageDecoderQt::internalDecodeSize()
{
ASSERT(m_reader);
// If we have a QSize() something failed
QSize size = m_reader->size();
if (size.isEmpty()) {
setFailed();
return clearPointers();
}
setSize(size.width(), size.height());
// We don't need the tables set by prepareScaleDataIfNecessary,
// but their dimensions are used by ImageDecoder::scaledSize().
prepareScaleDataIfNecessary();
if (m_scaled)
m_reader->setScaledSize(scaledSize());
}
UString URPCObject::processMessage(URPCEnvelope& envelope, bool& bContainsFault)
{
U_TRACE(0, "URPCObject::processMessage(%p,%p)", &envelope, &bContainsFault)
U_INTERNAL_ASSERT_POINTER(URPCMethod::encoder)
UString retval;
// Iterate over the list of methods
URPCMethod* method = find(envelope.getMethodName());
if (method == 0)
{
// Return object not found error. This would be a Client fault
setFailed();
URPCMethod::pFault->setFaultReason(U_CONSTANT_TO_PARAM("The requested method does not exist on this server"));
bContainsFault = true;
retval = URPCMethod::encoder->encodeFault(URPCMethod::pFault);
}
else
{
UString ns = envelope.getNsName();
U_INTERNAL_DUMP("envelope.nsName = %V", ns.rep)
// check the name of namespace qualified element information (gSOAP)
if (ns.empty()) ns = method->getNamespaces();
if (ns.empty()) ns = *UString::str_ns;
bContainsFault = (method->execute(envelope) == false);
retval = URPCMethod::encoder->encodeMethodResponse(*method, ns);
}
U_RETURN_STRING(retval);
}
bool ICOImageDecoder::processDirectoryEntries() {
// Read directory entries.
ASSERT(m_decodedOffset == sizeOfDirectory);
if ((m_decodedOffset > m_data->size()) ||
((m_data->size() - m_decodedOffset) <
(m_dirEntriesCount * sizeOfDirEntry)))
return false;
// Enlarge member vectors to hold all the entries.
m_dirEntries.resize(m_dirEntriesCount);
m_bmpReaders.resize(m_dirEntriesCount);
m_pngDecoders.resize(m_dirEntriesCount);
for (IconDirectoryEntries::iterator i(m_dirEntries.begin());
i != m_dirEntries.end(); ++i)
*i = readDirectoryEntry(); // Updates m_decodedOffset.
// Make sure the specified image offsets are past the end of the directory
// entries.
for (IconDirectoryEntries::iterator i(m_dirEntries.begin());
i != m_dirEntries.end(); ++i) {
if (i->m_imageOffset < m_decodedOffset)
return setFailed();
}
DEFINE_THREAD_SAFE_STATIC_LOCAL(
blink::CustomCountHistogram, dimensionsLocationHistogram,
new blink::CustomCountHistogram(
"Blink.DecodedImage.EffectiveDimensionsLocation.ICO", 0, 50000, 50));
dimensionsLocationHistogram.count(m_decodedOffset - 1);
// Arrange frames in decreasing quality order.
std::sort(m_dirEntries.begin(), m_dirEntries.end(), compareEntries);
// The image size is the size of the largest entry.
const IconDirectoryEntry& dirEntry = m_dirEntries.first();
// Technically, this next call shouldn't be able to fail, since the width
// and height here are each <= 256, and |m_frameSize| is empty.
return setSize(dirEntry.m_size.width(), dirEntry.m_size.height());
}
void EglWaylandBackend::init()
{
if (!initRenderingContext()) {
setFailed("Could not initialize rendering context");
return;
}
initEGL();
GLPlatform *glPlatform = GLPlatform::instance();
glPlatform->detect(EglPlatformInterface);
glPlatform->printResults();
initGL(EglPlatformInterface);
setSupportsBufferAge(false);
if (hasGLExtension("EGL_EXT_buffer_age")) {
const QByteArray useBufferAge = qgetenv("KWIN_USE_BUFFER_AGE");
if (useBufferAge != "0")
setSupportsBufferAge(true);
}
}
void AMDetectorReadAction::startImplementation(){
// If you still don't have a detector, check the exposed detectors one last time.
//if(!detector_)
// detector_ = AMBeamline::bl()->exposedDetectorByInfo(*(detectorReadInfo()->detectorInfo()));
if(!detector_ && AMBeamlineSupport::beamlineDetectorAPI())
detector_ = AMBeamlineSupport::beamlineDetectorAPI()->exposedDetectorByInfo(*(detectorReadInfo()->detectorInfo()));
if(!detector_) {
AMErrorMon::alert(this,
AMDETECTORREADACTION_NO_VALID_DETECTOR,
QString("There was an error reading the detector '%1', because the detector was not found. Please report this problem to the Acquaman developers.").arg(detectorReadInfo()->name()));
setFailed();
return;
}
if(detector_->readMethod() == AMDetectorDefinitions::WaitRead){
// connect to detector initialization signals
connect(detector_, SIGNAL(newValuesAvailable()), this, SLOT(onDetectorNewValuesAvailable()));
}
else
internalSetSucceeded();
}
void GIFImageDecoder::parse(GIFParseQuery query)
{
if (failed())
return;
if (!m_reader) {
m_reader = adoptPtr(new GIFImageReader(this));
m_reader->setData(m_data);
}
if (!m_reader->parse(query)) {
setFailed();
return;
}
const size_t oldSize = m_frameBufferCache.size();
m_frameBufferCache.resize(m_reader->imagesCount());
for (size_t i = oldSize; i < m_reader->imagesCount(); ++i) {
ImageFrame& buffer = m_frameBufferCache[i];
const GIFFrameContext* frameContext = m_reader->frameContext(i);
buffer.setPremultiplyAlpha(m_premultiplyAlpha);
buffer.setRequiredPreviousFrameIndex(findRequiredPreviousFrame(i));
buffer.setDuration(frameContext->delayTime);
buffer.setDisposalMethod(frameContext->disposalMethod);
// Initialize the frame rect in our buffer.
IntRect frameRect(frameContext->xOffset, frameContext->yOffset, frameContext->width, frameContext->height);
// Make sure the frameRect doesn't extend outside the buffer.
if (frameRect.maxX() > size().width())
frameRect.setWidth(size().width() - frameContext->xOffset);
if (frameRect.maxY() > size().height())
frameRect.setHeight(size().height() - frameContext->yOffset);
buffer.setOriginalFrameRect(frameRect);
}
}
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();
}
}
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.
}
bool ICOImageDecoder::processDirectoryEntries()
{
// Read directory entries.
ASSERT(m_decodedOffset == sizeOfDirectory);
if ((m_decodedOffset > m_data->size()) || ((m_data->size() - m_decodedOffset) < (m_dirEntries.size() * sizeOfDirEntry)))
return false;
for (IconDirectoryEntries::iterator i(m_dirEntries.begin()); i != m_dirEntries.end(); ++i)
*i = readDirectoryEntry(); // Updates m_decodedOffset.
// Make sure the specified image offsets are past the end of the directory
// entries.
for (IconDirectoryEntries::iterator i(m_dirEntries.begin()); i != m_dirEntries.end(); ++i) {
if (i->m_imageOffset < m_decodedOffset)
return setFailed();
}
// Arrange frames in decreasing quality order.
std::sort(m_dirEntries.begin(), m_dirEntries.end(), compareEntries);
// The image size is the size of the largest entry.
const IconDirectoryEntry& dirEntry = m_dirEntries.first();
setSize(dirEntry.m_size.width(), dirEntry.m_size.height());
return true;
}
void KJavaApplet::create( )
{
if ( !context->create( this ) )
setFailed();
d->reallyExists = true;
}
bool WEBPImageDecoder::decode(bool onlySize)
{
if (failed())
return false;
const uint8_t* dataBytes = reinterpret_cast<const uint8_t*>(m_data->data());
const size_t dataSize = m_data->size();
if (!ImageDecoder::isSizeAvailable()) {
static const size_t imageHeaderSize = 30;
if (dataSize < imageHeaderSize)
return false;
int width, height;
#ifdef QCMS_WEBP_COLOR_CORRECTION
WebPData inputData = { dataBytes, dataSize };
WebPDemuxState state;
WebPDemuxer* demuxer = WebPDemuxPartial(&inputData, &state);
if (!demuxer)
return setFailed();
width = WebPDemuxGetI(demuxer, WEBP_FF_CANVAS_WIDTH);
height = WebPDemuxGetI(demuxer, WEBP_FF_CANVAS_HEIGHT);
m_formatFlags = WebPDemuxGetI(demuxer, WEBP_FF_FORMAT_FLAGS);
m_hasAlpha = !!(m_formatFlags & ALPHA_FLAG);
WebPDemuxDelete(demuxer);
if (state <= WEBP_DEMUX_PARSING_HEADER)
return false;
#elif (WEBP_DECODER_ABI_VERSION >= 0x0163)
WebPBitstreamFeatures features;
if (WebPGetFeatures(dataBytes, dataSize, &features) != VP8_STATUS_OK)
return setFailed();
width = features.width;
height = features.height;
m_hasAlpha = features.has_alpha;
#else
// Earlier version won't be able to display WebP files with alpha.
if (!WebPGetInfo(dataBytes, dataSize, &width, &height))
return setFailed();
m_hasAlpha = false;
#endif
if (!setSize(width, height))
return setFailed();
}
ASSERT(ImageDecoder::isSizeAvailable());
if (onlySize)
return true;
ASSERT(!m_frameBufferCache.isEmpty());
ImageFrame& buffer = m_frameBufferCache[0];
ASSERT(buffer.status() != ImageFrame::FrameComplete);
if (buffer.status() == ImageFrame::FrameEmpty) {
if (!buffer.setSize(size().width(), size().height()))
return setFailed();
buffer.setStatus(ImageFrame::FramePartial);
buffer.setHasAlpha(m_hasAlpha);
buffer.setOriginalFrameRect(IntRect(IntPoint(), size()));
}
if (!m_decoder) {
WEBP_CSP_MODE mode = outputMode(m_hasAlpha);
if (!m_premultiplyAlpha)
mode = outputMode(false);
if ((m_formatFlags & ICCP_FLAG) && !ignoresGammaAndColorProfile())
mode = MODE_RGBA; // Decode to RGBA for input to libqcms.
int rowStride = size().width() * sizeof(ImageFrame::PixelData);
uint8_t* output = reinterpret_cast<uint8_t*>(buffer.getAddr(0, 0));
int outputSize = size().height() * rowStride;
m_decoder = WebPINewRGB(mode, output, outputSize, rowStride);
if (!m_decoder)
return setFailed();
}
switch (WebPIUpdate(m_decoder, dataBytes, dataSize)) {
case VP8_STATUS_OK:
if ((m_formatFlags & ICCP_FLAG) && !ignoresGammaAndColorProfile())
applyColorProfile(dataBytes, dataSize, buffer);
buffer.setStatus(ImageFrame::FrameComplete);
clear();
return true;
case VP8_STATUS_SUSPENDED:
if ((m_formatFlags & ICCP_FLAG) && !ignoresGammaAndColorProfile())
applyColorProfile(dataBytes, dataSize, buffer);
return false;
default:
clear();
return setFailed();
}
}
bool BMPImageReader::processRLEData()
{
if (m_decodedOffset > m_data->size())
return false;
// RLE decoding is poorly specified. Two main problems:
// (1) Are EOL markers necessary? What happens when we have too many
// pixels for one row?
// http://www.fileformat.info/format/bmp/egff.htm says extra pixels
// should wrap to the next line. Real BMPs I've encountered seem to
// instead expect extra pixels to be ignored until the EOL marker is
// seen, although this has only happened in a few cases and I suspect
// those BMPs may be invalid. So we only change lines on EOL (or Delta
// with dy > 0), and fail in most cases when pixels extend past the end
// of the line.
// (2) When Delta, EOL, or EOF are seen, what happens to the "skipped"
// pixels?
// http://www.daubnet.com/formats/BMP.html says these should be filled
// with color 0. However, the "do nothing" and "don't care" comments
// of other references suggest leaving these alone, i.e. letting them
// be transparent to the background behind the image. This seems to
// match how MSPAINT treats BMPs, so we do that. Note that when we
// actually skip pixels for a case like this, we need to note on the
// framebuffer that we have alpha.
// Impossible to decode row-at-a-time, so just do things as a stream of
// bytes.
while (true) {
// Every entry takes at least two bytes; bail if there isn't enough
// data.
if ((m_data->size() - m_decodedOffset) < 2)
return false;
// For every entry except EOF, we'd better not have reached the end of
// the image.
const uint8_t count = m_data->data()[m_decodedOffset];
const uint8_t code = m_data->data()[m_decodedOffset + 1];
if ((count || (code != 1)) && pastEndOfImage(0))
return setFailed();
// Decode.
if (count == 0) {
switch (code) {
case 0: // Magic token: EOL
// Skip any remaining pixels in this row.
if (m_coord.x() < m_parent->size().width())
m_buffer->setHasAlpha(true);
moveBufferToNextRow();
m_decodedOffset += 2;
break;
case 1: // Magic token: EOF
// Skip any remaining pixels in the image.
if ((m_coord.x() < m_parent->size().width()) || (m_isTopDown ? (m_coord.y() < (m_parent->size().height() - 1)) : (m_coord.y() > 0)))
m_buffer->setHasAlpha(true);
return true;
case 2: { // Magic token: Delta
// The next two bytes specify dx and dy. Bail if there isn't
// enough data.
if ((m_data->size() - m_decodedOffset) < 4)
return false;
// Fail if this takes us past the end of the desired row or
// past the end of the image.
const uint8_t dx = m_data->data()[m_decodedOffset + 2];
const uint8_t dy = m_data->data()[m_decodedOffset + 3];
if (dx || dy)
m_buffer->setHasAlpha(true);
if (((m_coord.x() + dx) > m_parent->size().width()) || pastEndOfImage(dy))
return setFailed();
// Skip intervening pixels.
m_coord.move(dx, m_isTopDown ? dy : -dy);
m_decodedOffset += 4;
break;
}
default: // Absolute mode
// |code| pixels specified as in BI_RGB, zero-padded at the end
// to a multiple of 16 bits.
// Because processNonRLEData() expects m_decodedOffset to
// point to the beginning of the pixel data, bump it past
// the escape bytes and then reset if decoding failed.
m_decodedOffset += 2;
if (!processNonRLEData(true, code)) {
m_decodedOffset -= 2;
return false;
}
break;
}
} else { // Encoded mode
// The following color data is repeated for |count| total pixels.
// Strangely, some BMPs seem to specify excessively large counts
// here; ignore pixels past the end of the row.
const int endX = std::min(m_coord.x() + count, m_parent->size().width());
if (m_infoHeader.biCompression == RLE24) {
// Bail if there isn't enough data.
if ((m_data->size() - m_decodedOffset) < 4)
return false;
// One BGR triple that we copy |count| times.
fillRGBA(endX, m_data->data()[m_decodedOffset + 3], m_data->data()[m_decodedOffset + 2], code, 0xff);
m_decodedOffset += 4;
} else {
// RLE8 has one color index that gets repeated; RLE4 has two
// color indexes in the upper and lower 4 bits of the byte,
// which are alternated.
size_t colorIndexes[2] = {code, code};
if (m_infoHeader.biCompression == RLE4) {
colorIndexes[0] = (colorIndexes[0] >> 4) & 0xf;
colorIndexes[1] &= 0xf;
}
if ((colorIndexes[0] >= m_infoHeader.biClrUsed) || (colorIndexes[1] >= m_infoHeader.biClrUsed))
return setFailed();
for (int which = 0; m_coord.x() < endX; ) {
setI(colorIndexes[which]);
which = !which;
}
m_decodedOffset += 2;
}
}
}
bool BMPImageReader::processBitmasks()
{
// Create m_bitMasks[] values.
if (m_infoHeader.biCompression != BITFIELDS) {
// The format doesn't actually use bitmasks. To simplify the decode
// logic later, create bitmasks for the RGB data. For Windows V4+,
// this overwrites the masks we read from the header, which are
// supposed to be ignored in non-BITFIELDS cases.
// 16 bits: MSB <- xRRRRRGG GGGBBBBB -> LSB
// 24/32 bits: MSB <- [AAAAAAAA] RRRRRRRR GGGGGGGG BBBBBBBB -> LSB
const int numBits = (m_infoHeader.biBitCount == 16) ? 5 : 8;
for (int i = 0; i <= 2; ++i)
m_bitMasks[i] = ((static_cast<uint32_t>(1) << (numBits * (3 - i))) - 1) ^ ((static_cast<uint32_t>(1) << (numBits * (2 - i))) - 1);
// For Windows V4+ 32-bit RGB, don't overwrite the alpha mask from the
// header (see note in readInfoHeader()).
if (m_infoHeader.biBitCount < 32)
m_bitMasks[3] = 0;
else if (!isWindowsV4Plus())
m_bitMasks[3] = static_cast<uint32_t>(0xff000000);
} else if (!isWindowsV4Plus()) {
// For Windows V4+ BITFIELDS mode bitmaps, this was already done when
// we read the info header.
// Fail if we don't have enough file space for the bitmasks.
static const size_t SIZEOF_BITMASKS = 12;
if (((m_headerOffset + m_infoHeader.biSize + SIZEOF_BITMASKS) < (m_headerOffset + m_infoHeader.biSize)) || (m_imgDataOffset && (m_imgDataOffset < (m_headerOffset + m_infoHeader.biSize + SIZEOF_BITMASKS))))
return setFailed();
// Read bitmasks.
if ((m_data->size() - m_decodedOffset) < SIZEOF_BITMASKS)
return false;
m_bitMasks[0] = readUint32(0);
m_bitMasks[1] = readUint32(4);
m_bitMasks[2] = readUint32(8);
// No alpha in anything other than Windows V4+.
m_bitMasks[3] = 0;
m_decodedOffset += SIZEOF_BITMASKS;
}
// We've now decoded all the non-image data we care about. Skip anything
// else before the actual raster data.
if (m_imgDataOffset)
m_decodedOffset = m_imgDataOffset;
m_needToProcessBitmasks = false;
// Check masks and set shift values.
for (int i = 0; i < 4; ++i) {
// Trim the mask to the allowed bit depth. Some Windows V4+ BMPs
// specify a bogus alpha channel in bits that don't exist in the pixel
// data (for example, bits 25-31 in a 24-bit RGB format).
if (m_infoHeader.biBitCount < 32)
m_bitMasks[i] &= ((static_cast<uint32_t>(1) << m_infoHeader.biBitCount) - 1);
// For empty masks (common on the alpha channel, especially after the
// trimming above), quickly clear the shifts and continue, to avoid an
// infinite loop in the counting code below.
uint32_t tempMask = m_bitMasks[i];
if (!tempMask) {
m_bitShiftsRight[i] = m_bitShiftsLeft[i] = 0;
continue;
}
// Make sure bitmask does not overlap any other bitmasks.
for (int j = 0; j < i; ++j) {
if (tempMask & m_bitMasks[j])
return setFailed();
}
// Count offset into pixel data.
for (m_bitShiftsRight[i] = 0; !(tempMask & 1); tempMask >>= 1)
++m_bitShiftsRight[i];
// Count size of mask.
for (m_bitShiftsLeft[i] = 8; tempMask & 1; tempMask >>= 1)
--m_bitShiftsLeft[i];
// Make sure bitmask is contiguous.
if (tempMask)
return setFailed();
// Since RGBABuffer tops out at 8 bits per channel, adjust the shift
// amounts to use the most significant 8 bits of the channel.
if (m_bitShiftsLeft[i] < 0) {
m_bitShiftsRight[i] -= m_bitShiftsLeft[i];
m_bitShiftsLeft[i] = 0;
}
}
return true;
}
bool BMPImageReader::readInfoHeader()
{
// Pre-initialize some fields that not all headers set.
m_infoHeader.biCompression = RGB;
m_infoHeader.biClrUsed = 0;
if (m_isOS21x) {
m_infoHeader.biWidth = readUint16(4);
m_infoHeader.biHeight = readUint16(6);
ASSERT(m_andMaskState == None); // ICO is a Windows format, not OS/2!
m_infoHeader.biBitCount = readUint16(10);
return true;
}
m_infoHeader.biWidth = readUint32(4);
m_infoHeader.biHeight = readUint32(8);
if (m_andMaskState != None)
m_infoHeader.biHeight /= 2;
m_infoHeader.biBitCount = readUint16(14);
// Read compression type, if present.
if (m_infoHeader.biSize >= 20) {
uint32_t biCompression = readUint32(16);
// Detect OS/2 2.x-specific compression types.
if ((biCompression == 3) && (m_infoHeader.biBitCount == 1)) {
m_infoHeader.biCompression = HUFFMAN1D;
m_isOS22x = true;
} else if ((biCompression == 4) && (m_infoHeader.biBitCount == 24)) {
m_infoHeader.biCompression = RLE24;
m_isOS22x = true;
} else if (biCompression > 5)
return setFailed(); // Some type we don't understand.
else
m_infoHeader.biCompression = static_cast<CompressionType>(biCompression);
}
// Read colors used, if present.
if (m_infoHeader.biSize >= 36)
m_infoHeader.biClrUsed = readUint32(32);
// Windows V4+ can safely read the four bitmasks from 40-56 bytes in, so do
// that here. If the bit depth is less than 16, these values will be
// ignored by the image data decoders. If the bit depth is at least 16 but
// the compression format isn't BITFIELDS, these values will be ignored and
// overwritten* in processBitmasks().
// NOTE: We allow alpha here. Microsoft doesn't really document this well,
// but some BMPs appear to use it.
//
// For non-Windows V4+, m_bitMasks[] et. al will be initialized later
// during processBitmasks().
//
// *Except the alpha channel. Bizarrely, some RGB bitmaps expect decoders
// to pay attention to the alpha mask here, so there's a special case in
// processBitmasks() that doesn't always overwrite that value.
if (isWindowsV4Plus()) {
m_bitMasks[0] = readUint32(40);
m_bitMasks[1] = readUint32(44);
m_bitMasks[2] = readUint32(48);
m_bitMasks[3] = readUint32(52);
}
// Detect top-down BMPs.
if (m_infoHeader.biHeight < 0) {
m_isTopDown = true;
m_infoHeader.biHeight = -m_infoHeader.biHeight;
}
return true;
}
bool WEBPImageDecoder::decode(bool onlySize)
{
if (failed())
return false;
#if defined(__LB_SHELL__)
// We dont want progressive decoding.
if (!isAllDataReceived())
return false;
#endif
const uint8_t* dataBytes = reinterpret_cast<const uint8_t*>(m_data->data());
const size_t dataSize = m_data->size();
if (!ImageDecoder::isSizeAvailable()) {
static const size_t imageHeaderSize = 30;
if (dataSize < imageHeaderSize)
return false;
int width, height;
#if (WEBP_DECODER_ABI_VERSION >= 0x0163)
WebPBitstreamFeatures features;
if (WebPGetFeatures(dataBytes, dataSize, &features) != VP8_STATUS_OK)
return setFailed();
width = features.width;
height = features.height;
m_hasAlpha = features.has_alpha;
#else
// Earlier version won't be able to display WebP files with alpha.
if (!WebPGetInfo(dataBytes, dataSize, &width, &height))
return setFailed();
m_hasAlpha = false;
#endif
if (!setSize(width, height))
return setFailed();
}
ASSERT(ImageDecoder::isSizeAvailable());
if (onlySize)
return true;
ASSERT(!m_frameBufferCache.isEmpty());
ImageFrame& buffer = m_frameBufferCache[0];
ASSERT(buffer.status() != ImageFrame::FrameComplete);
if (buffer.status() == ImageFrame::FrameEmpty) {
if (!buffer.setSize(size().width(), size().height()))
return setFailed();
buffer.setStatus(ImageFrame::FramePartial);
buffer.setHasAlpha(m_hasAlpha);
buffer.setOriginalFrameRect(IntRect(IntPoint(), size()));
}
if (!m_decoder) {
int rowStride = size().width() * sizeof(ImageFrame::PixelData);
uint8_t* output = reinterpret_cast<uint8_t*>(buffer.getAddr(0, 0));
int outputSize = size().height() * rowStride;
m_decoder = WebPINewRGB(outputMode(m_hasAlpha), output, outputSize, rowStride);
if (!m_decoder)
return setFailed();
}
switch (WebPIUpdate(m_decoder, dataBytes, dataSize)) {
case VP8_STATUS_OK:
buffer.setStatus(ImageFrame::FrameComplete);
WebPIDelete(m_decoder);
m_decoder = 0;
return true;
case VP8_STATUS_SUSPENDED:
return false;
default:
WebPIDelete(m_decoder);
m_decoder = 0;
return setFailed();
}
}
void RPIImageDecoder::decode(bool onlySize)
{
unsigned int width, height;
if (failed())
return;
// make sure we have all the data before doing anything
if (!isAllDataReceived())
return;
if (onlySize)
{
if (readSize(width, height));
{
setSize(width, height);
}
return;
}
else
{
readSize(width, height);
clock_t start = clock();
ImageFrame& buffer = m_frameBufferCache[0];
if (m_frameBufferCache.isEmpty())
{
log("decode : frameBuffercache is empty");
setFailed();
return;
}
if (buffer.status() == ImageFrame::FrameEmpty)
{
if (!buffer.setSize(width, height))
{
log("decode : could not define buffer size");
setFailed();
return;
}
// The buffer is transparent outside the decoded area while the image is
// loading. The completed image will be marked fully opaque in jpegComplete().
buffer.setHasAlpha(false);
}
// lock the mutex so that we only process once at a time
pthread_mutex_lock(&decode_mutex);
// setup decoder request information
BRCMIMAGE_REQUEST_T* dec_request = getDecoderRequest();
BRCMIMAGE_T *decoder = getDecoder();
memset(dec_request, 0, sizeof(BRCMIMAGE_REQUEST_T));
dec_request->input = (unsigned char*)m_data->data();
dec_request->input_size = m_data->size();
dec_request->output = (unsigned char*)buffer.getAddr(0, 0);
dec_request->output_alloc_size = width * height * 4;
dec_request->output_handle = 0;
dec_request->pixel_format = PIXEL_FORMAT_RGBA;
dec_request->buffer_width = 0;
dec_request->buffer_height = 0;
brcmimage_acquire(decoder);
BRCMIMAGE_STATUS_T status = brcmimage_process(decoder, dec_request);
if (status == BRCMIMAGE_SUCCESS)
{
clock_t copy = clock();
unsigned char *ptr = (unsigned char *)buffer.getAddr(0, 0);
for (unsigned int i = 0; i < dec_request->height * dec_request->width; i++)
{
// we swap RGBA -> BGRA
unsigned char tmp = *ptr;
*ptr = ptr[2];
ptr[2] = tmp;
ptr += 4;
}
brcmimage_release(decoder);
buffer.setPixelsChanged(true);
buffer.setStatus(ImageFrame::FrameComplete);
buffer.setHasAlpha(m_hasAlpha);
clock_t end = clock();
unsigned long millis = (end - start) * 1000 / CLOCKS_PER_SEC;
unsigned long copymillis = (end - copy) * 1000 / CLOCKS_PER_SEC;
log("decode : image (%d x %d)(Alpha=%d) decoded in %d ms (copy in %d ms), source size = %d bytes", width, height, m_hasAlpha, millis, copymillis, m_data->size());
}
else
{
log("decode : Decoding failed with status %d", status);
}
pthread_mutex_unlock(&decode_mutex);
}
}
bool JPEGImageDecoder::outputScanlines()
{
if (m_frameBufferCache.isEmpty())
return false;
// Initialize the framebuffer if needed.
ImageFrame& buffer = m_frameBufferCache[0];
if (buffer.status() == ImageFrame::FrameEmpty) {
if (!buffer.setSize(scaledSize().width(), scaledSize().height()))
return setFailed();
buffer.setStatus(ImageFrame::FramePartial);
buffer.setHasAlpha(false);
buffer.setColorProfile(m_colorProfile);
// For JPEGs, the frame always fills the entire image.
buffer.setOriginalFrameRect(IntRect(IntPoint(), size()));
}
jpeg_decompress_struct* info = m_reader->info();
#if !ENABLE(IMAGE_DECODER_DOWN_SAMPLING) && defined(TURBO_JPEG_RGB_SWIZZLE)
if (turboSwizzled(info->out_color_space)) {
ASSERT(!m_scaled);
while (info->output_scanline < info->output_height) {
unsigned char* row = reinterpret_cast<unsigned char*>(buffer.getAddr(0, info->output_scanline));
if (jpeg_read_scanlines(info, &row, 1) != 1)
return false;
}
return true;
}
#endif
JSAMPARRAY samples = m_reader->samples();
while (info->output_scanline < info->output_height) {
// jpeg_read_scanlines will increase the scanline counter, so we
// save the scanline before calling it.
int sourceY = info->output_scanline;
/* Request one scanline. Returns 0 or 1 scanlines. */
if (jpeg_read_scanlines(info, samples, 1) != 1)
return false;
int destY = scaledY(sourceY);
if (destY < 0)
continue;
int width = m_scaled ? m_scaledColumns.size() : info->output_width;
for (int x = 0; x < width; ++x) {
JSAMPLE* jsample = *samples + (m_scaled ? m_scaledColumns[x] : x) * ((info->out_color_space == JCS_RGB) ? 3 : 4);
if (info->out_color_space == JCS_RGB)
buffer.setRGBA(x, destY, jsample[0], jsample[1], jsample[2], 0xFF);
else if (info->out_color_space == JCS_CMYK) {
// Source is 'Inverted CMYK', output is RGB.
// See: http://www.easyrgb.com/math.php?MATH=M12#text12
// Or: http://www.ilkeratalay.com/colorspacesfaq.php#rgb
// From CMYK to CMY:
// X = X * (1 - K ) + K [for X = C, M, or Y]
// Thus, from Inverted CMYK to CMY is:
// X = (1-iX) * (1 - (1-iK)) + (1-iK) => 1 - iX*iK
// From CMY (0..1) to RGB (0..1):
// R = 1 - C => 1 - (1 - iC*iK) => iC*iK [G and B similar]
unsigned k = jsample[3];
buffer.setRGBA(x, destY, jsample[0] * k / 255, jsample[1] * k / 255, jsample[2] * k / 255, 0xFF);
} else {
ASSERT_NOT_REACHED();
return setFailed();
}
}
}
return true;
}
void AMDetectorTriggerAction::onAcquisitionFailed(){
if(triggerSource_)
disconnect(triggerSource_, 0, this, 0);
disconnect(detector_, 0, this, 0);
setFailed();
}
bool GIFImageDecoder::initFrameBuffer(unsigned frameIndex)
{
// Initialize the frame rect in our buffer.
const GIFFrameContext* frameContext = m_reader->frameContext();
IntRect frameRect(frameContext->xOffset, frameContext->yOffset, frameContext->width, frameContext->height);
// Make sure the frameRect doesn't extend outside the buffer.
if (frameRect.maxX() > size().width())
frameRect.setWidth(size().width() - frameContext->xOffset);
if (frameRect.maxY() > size().height())
frameRect.setHeight(size().height() - frameContext->yOffset);
ImageFrame* const buffer = &m_frameBufferCache[frameIndex];
int left = upperBoundScaledX(frameRect.x());
int right = lowerBoundScaledX(frameRect.maxX(), left);
int top = upperBoundScaledY(frameRect.y());
int bottom = lowerBoundScaledY(frameRect.maxY(), top);
buffer->setOriginalFrameRect(IntRect(left, top, right - left, bottom - top));
if (!frameIndex) {
// This is the first frame, so we're not relying on any previous data.
if (!buffer->setSize(scaledSize().width(), scaledSize().height()))
return setFailed();
} else {
// The starting state for this frame depends on the previous frame's
// disposal method.
//
// Frames that use the DisposeOverwritePrevious method are effectively
// no-ops in terms of changing the starting state of a frame compared to
// the starting state of the previous frame, so skip over them. (If the
// first frame specifies this method, it will get treated like
// DisposeOverwriteBgcolor below and reset to a completely empty image.)
const ImageFrame* prevBuffer = &m_frameBufferCache[--frameIndex];
ImageFrame::FrameDisposalMethod prevMethod = prevBuffer->disposalMethod();
while (frameIndex && (prevMethod == ImageFrame::DisposeOverwritePrevious)) {
prevBuffer = &m_frameBufferCache[--frameIndex];
prevMethod = prevBuffer->disposalMethod();
}
ASSERT(prevBuffer->status() == ImageFrame::FrameComplete);
if ((prevMethod == ImageFrame::DisposeNotSpecified) || (prevMethod == ImageFrame::DisposeKeep)) {
// Preserve the last frame as the starting state for this frame.
if (!buffer->copyBitmapData(*prevBuffer))
return setFailed();
} else {
// We want to clear the previous frame to transparent, without
// affecting pixels in the image outside of the frame.
const IntRect& prevRect = prevBuffer->originalFrameRect();
const IntSize& bufferSize = scaledSize();
if (!frameIndex || prevRect.contains(IntRect(IntPoint(), scaledSize()))) {
// Clearing the first frame, or a frame the size of the whole
// image, results in a completely empty image.
if (!buffer->setSize(bufferSize.width(), bufferSize.height()))
return setFailed();
} else {
// Copy the whole previous buffer, then clear just its frame.
if (!buffer->copyBitmapData(*prevBuffer))
return setFailed();
for (int y = prevRect.y(); y < prevRect.maxY(); ++y) {
for (int x = prevRect.x(); x < prevRect.maxX(); ++x)
buffer->setRGBA(x, y, 0, 0, 0, 0);
}
if ((prevRect.width() > 0) && (prevRect.height() > 0))
buffer->setHasAlpha(true);
}
}
}
// Update our status to be partially complete.
buffer->setStatus(ImageFrame::FramePartial);
// Reset the alpha pixel tracker for this frame.
m_currentBufferSawAlpha = false;
return true;
}