void stream__BeforeFrameDataRead(FrameCallbackArgs args)
{
long rem = args.Stream.Reader.BytesRemaining;
long percent = (length_ - rem) * 100 / length_;
Console.Title = percent.ToString() + "% complete";
ProcessFrame(args);
}
protected override void ProcessFrame(FrameCallbackArgs args)
{
Frame frame = args.Frame;
frame.ReadData(stream_);
frame.ReadFooter(stream_);
frame.Write(outStream_);
args.ContinueDecoding = true;
args.HaveReadData = true;
}
protected override void ProcessFrame(FrameCallbackArgs args)
{
FrameHeader header = args.Frame.Header;
string s = "Frame # {0}: S-{1} E-{2}";
s = string.Format(s, currentFrame_, header.StartingSampleNumber, header.StartingSampleNumber + header.BlockSize);
Console.WriteLine(s);
currentFrame_++;
// we are not reading file data
args.HaveReadData = false;
}
void inStream__BeforeFrameDataRead(FrameCallbackArgs args)
{
FlacStream inStream = args.Stream;
long offset = args.Offset;
Frame frame = args.Frame;
frame.ReadData(inStream);
frame.ReadFooter(inStream);
ProcessFrame(inStream, frame, offset);
args.HaveReadData = true;
}
protected abstract void ProcessFrame(FrameCallbackArgs args);
protected override void ProcessFrame(FrameCallbackArgs args)
{
if (done_)
{
args.ContinueDecoding = false;
return;
}
Frame frame = args.Frame;
FrameHeader header = args.Frame.Header;
bool haveRead = false;
long start = header.StartingSampleNumber;
long end = start + header.BlockSize;
if (!writeFrames_)
{
if (start <= startSample_ && startSample_ <= end)
{
if (start <= endSample_ && endSample_ <= end)
{
// tracks ends in the same frame
writeFrames_ = false;
end = endSample_;
}
else
{
writeFrames_ = true;
}
start = startSample_;
// write (probably) partial first frame of track
WriteFrame(frame, header, start, end);
haveRead = true;
}
else
{
// nothing
}
}
else
{
if (start <= endSample_ && endSample_ <= end)
{
// write (probably) partial last frame of track
WriteFrame(frame, header, start, endSample_);
haveRead = true;
done_ = true;
writeFrames_ = false;
}
else
{
// write full frame
WriteFrame(frame, header, start, end);
haveRead = true;
}
}
args.HaveReadData = haveRead;
args.ContinueDecoding = !done_;
}
public void Decode()
{
signature_ = new Signature();
signature_.Read(this);
streamInfo_ = MetadataBlock.New(this) as MetadataBlockStreamInfo;
Validation.IsValid(streamInfo_ != null);
MetadataBlock block = streamInfo_;
if (MetadataRead != null)
{
MetadataRead(streamInfo_);
}
while (!block.Header.IsLastMetadataBlock)
{
block = MetadataBlock.New(this);
if (MetadataRead != null)
{
MetadataRead(block);
}
}
while (!reader_.Done)
{
Frame frame = new Frame();
long offset = reader_.Debug_BytesRead;
frame.ReadHeader(this);
bool haveRead = false;
if (BeforeFrameDataRead != null)
{
FrameCallbackArgs a = new FrameCallbackArgs(frame, this);
a.Offset = offset;
BeforeFrameDataRead(a);
if (!a.ContinueDecoding)
{
break;
}
haveRead = a.HaveReadData;
}
if (!haveRead)
{
frame.ReadData(this);
frame.ReadFooter(this);
}
}
}
void inStream__BeforeFrameDataRead(FrameCallbackArgs args)
{
args.ContinueDecoding = false;
}
