KoFilter::ConversionStatus VmlDrawingReader::read_xml()
{
unsigned index = 0;
KoXmlWriter *oldBody = 0;
while (!atEnd()) {
readNext();
if (isEndElement() && qualifiedName() == "xml") {
break;
}
if (isStartElement()) {
if (name() == "shapetype") {
TRY_READ(shapetype)
}
else if (name() == "shape") {
oldBody = body; // Body protetion starts
QBuffer frameBuf;
KoXmlWriter frameWriter(&frameBuf);
body = &frameWriter;
TRY_READ(shape) //from vml
m_content[m_currentVMLProperties.currentShapeId] = m_currentVMLProperties.imagedataPath;
pushCurrentDrawStyle(new KoGenStyle(KoGenStyle::GraphicAutoStyle, "graphic"));
createFrameStart();
popCurrentDrawStyle();
m_frames[m_currentVMLProperties.currentShapeId] = QString::fromUtf8(frameBuf.buffer(), frameBuf.buffer().size()).append(">");
body = oldBody; // Body protection ends
++index;
}
}
}
return KoFilter::OK;
}
already_AddRefed<mozilla::MediaRawData>
MP3Demuxer::GetNext() {
static const int BUFFER_SIZE = 4096;
uint8_t buffer[BUFFER_SIZE];
uint32_t read = 0;
const uint8_t* frameBeg = nullptr;
const uint8_t* bufferEnd = nullptr;
while (frameBeg == bufferEnd &&
(read = Read(buffer, mOffset, BUFFER_SIZE)) > 0) {
MOZ_ASSERT(mOffset + read > mOffset);
mOffset += read;
bufferEnd = buffer + read;
frameBeg = mParser.Parse(buffer, bufferEnd);
}
if (frameBeg == bufferEnd || !mParser.CurrentFrame().Length()) {
return nullptr;
}
// Valid frame header was fully parsed, let's read the whole frame.
const int32_t frameLen = mParser.CurrentFrame().Length();
nsRefPtr<MediaRawData> frame = new MediaRawData();
frame->mOffset = mOffset - (bufferEnd - frameBeg) + 1;
nsAutoPtr<MediaRawDataWriter> frameWriter(frame->CreateWriter());
if (!frameWriter->SetSize(frameLen)) {
return nullptr;
}
read = Read(frameWriter->mData, frame->mOffset, frame->mSize);
if (read != frame->mSize) {
return nullptr;
}
// Prevent overflow.
if (mTotalFrameLen + frameLen < 0) {
// These variables have a linear dependency and are only used to derive the
// average frame length.
mTotalFrameLen /= 2;
mNumParsedFrames /= 2;
}
// Full frame parsed, move offset to its end.
mOffset = frame->mOffset + frame->mSize;
MOZ_ASSERT(mOffset > frame->mOffset);
mTotalFrameLen += frameLen;
mSamplesPerFrame = mParser.CurrentFrame().Header().SamplesPerFrame();
mSamplesPerSecond = mParser.CurrentFrame().Header().SampleRate();
mChannels = mParser.CurrentFrame().Header().Channels();
++mNumParsedFrames;
++mFrameIndex;
MOZ_ASSERT(mFrameIndex > 0);
frame->mTime = Duration(mFrameIndex - 1);
frame->mDuration = Duration(1);
if (mNumParsedFrames == 1) {
// First frame parsed, let's read VBR info if available.
// TODO: read info that helps with seeking (bug 1163667).
mParser.ParseVBRHeader(frame->mData, frame->mData + frame->mSize);
mFirstFrameOffset = frame->mOffset;
}
// Prepare the parser for the next frame parsing session.
mParser.FinishParsing();
return frame.forget();
}
