public ParsedContent Read(Stream stream)
{
var res = new ParsedContent();
var info = new AtomCollection(Channel.ChannelInfo.Extra);
var processed = false;
var eos = false;
while (!eos)
{
var start_pos = stream.Position;
try {
switch (state)
{
case ReaderState.Header:
{
var bin = ReadBytes(stream, 13);
var header = new FileHeader(bin);
if (header.IsValid)
{
Logger.Info("FLV Header found");
fileHeader = header;
bin = header.Binary;
res.ContentHeader = new Content(position, bin);
res.Contents = null;
info.SetChanInfoType("FLV");
info.SetChanInfoStreamType("video/x-flv");
info.SetChanInfoStreamExt(".flv");
res.ChannelInfo = new ChannelInfo(info);
position = bin.Length;
tags.Clear();
state = ReaderState.Body;
}
else
{
throw new BadDataException();
}
}
break;
case ReaderState.Body:
{
var bin = ReadBytes(stream, 11);
var read_valid = false;
var body = new FLVTag(bin);
if (body.IsValidHeader)
{
body.ReadBody(stream);
body.ReadFooter(stream);
if (body.IsValidFooter)
{
read_valid = true;
bin = body.Binary;
if (res.Contents == null)
{
res.Contents = new List <Content>();
}
res.Contents.Add(new Content(position, bin));
tags.AddLast(new TagDesc {
Timestamp = body.Timestamp / 1000.0, DataSize = body.DataSize
});
var timespan = tags.Last.Value.Timestamp - tags.First.Value.Timestamp;
if (timespan >= 30.0)
{
var sz = tags.Take(tags.Count - 1).Sum(t => t.DataSize);
info.SetChanInfoBitrate((int)(sz * 8 / timespan + 900) / 1000);
res.ChannelInfo = new ChannelInfo(info);
while (tags.Count > 1)
{
tags.RemoveFirst();
}
}
position += bin.Length;
}
}
if (!read_valid)
{
stream.Position = start_pos;
var header = new FileHeader(ReadBytes(stream, 13));
if (header.IsValid)
{
Logger.Info("New FLV Header found");
read_valid = true;
fileHeader = header;
bin = header.Binary;
res.ContentHeader = new Content(0, bin);
res.Contents = null;
info.SetChanInfoType("FLV");
info.SetChanInfoStreamType("video/x-flv");
info.SetChanInfoStreamExt(".flv");
res.ChannelInfo = new ChannelInfo(info);
tags.Clear();
position = bin.Length;
}
}
if (!read_valid)
{
throw new BadDataException();
}
}
break;
}
processed = true;
}
catch (EndOfStreamException) {
if (!processed)
{
throw;
}
stream.Position = start_pos;
eos = true;
}
catch (BadDataException) {
stream.Position = start_pos + 1;
}
}
return(res);
}
public bool Read(Stream stream, IRTMPContentSink sink)
{
var processed = false;
var eos = false;
while (!eos)
{
retry:
var start_pos = stream.Position;
try {
switch (state)
{
case ReaderState.Header:
{
var bin = ReadBytes(stream, 13, out eos);
if (eos)
{
goto error;
}
var header = new FLVFileHeader(bin);
if (header.IsValid)
{
sink.OnFLVHeader(header);
state = ReaderState.Body;
}
else
{
throw new BadDataException();
}
}
break;
case ReaderState.Body:
{
var bin = ReadBytes(stream, 11, out eos);
if (eos)
{
goto error;
}
var read_valid = false;
var body = new FLVTag(this, bin);
if (body.IsValidHeader)
{
if (!body.ReadBody(stream))
{
eos = true; goto error;
}
if (!body.ReadFooter(stream))
{
eos = true; goto error;
}
if (body.IsValidFooter)
{
read_valid = true;
switch (body.Type)
{
case FLVTag.TagType.Audio:
sink.OnAudio(body.ToRTMPMessage());
break;
case FLVTag.TagType.Video:
sink.OnVideo(body.ToRTMPMessage());
break;
case FLVTag.TagType.Script:
sink.OnData(new DataAMF0Message(body.ToRTMPMessage()));
break;
}
}
}
else
{
stream.Position = start_pos;
var headerbin = ReadBytes(stream, 13, out eos);
if (eos)
{
goto error;
}
var header = new FLVFileHeader(headerbin);
if (header.IsValid)
{
read_valid = true;
sink.OnFLVHeader(header);
}
}
if (!read_valid)
{
stream.Position = start_pos + 1;
var b = stream.ReadByte();
while (true)
{
if (b < 0)
{
eos = true;
goto error;
}
if ((b & 0xC0) == 0 && ((b & 0x1F) == 8 || (b & 0x1F) == 9 || (b & 0x1F) == 18))
{
break;
}
b = stream.ReadByte();
}
stream.Position = stream.Position - 1;
goto retry;
}
}
break;
}
processed = true;
}
catch (EndOfStreamException) {
stream.Position = start_pos;
eos = true;
}
catch (BadDataException) {
stream.Position = start_pos + 1;
}
error:
if (eos)
{
stream.Position = start_pos;
eos = true;
}
}
return(processed);
}
public ParsedContent Read(Stream stream)
{
var processed = false;
var eos = false;
while (!eos) {
var start_pos = stream.Position;
try {
switch (state) {
case ReaderState.Header:
{
var bin = ReadBytes(stream, 13);
var header = new FileHeader(bin);
if (header.IsValid) {
Logger.Info("FLV Header found");
contentBuffer.OnStart();
state = ReaderState.Body;
}
else {
throw new BadDataException();
}
}
break;
case ReaderState.Body:
{
var bin = ReadBytes(stream, 11);
var read_valid = false;
var body = new FLVTag(bin);
if (body.IsValidHeader) {
body.ReadBody(stream);
body.ReadFooter(stream);
if (body.IsValidFooter) {
read_valid = true;
switch (body.Type) {
case FLVTag.TagType.Audio:
contentBuffer.OnAudio(body.ToRTMPMessage());
break;
case FLVTag.TagType.Video:
contentBuffer.OnVideo(body.ToRTMPMessage());
break;
case FLVTag.TagType.Script:
contentBuffer.OnData(new RTMP.DataAMF0Message(body.ToRTMPMessage()));
break;
}
}
}
if (!read_valid) {
stream.Position = start_pos;
var header = new FileHeader(ReadBytes(stream, 13));
if (header.IsValid) {
Logger.Info("New FLV Header found");
read_valid = true;
contentBuffer.OnStart();
}
}
if (!read_valid) throw new BadDataException();
}
break;
}
processed = true;
}
catch (EndOfStreamException) {
if (!processed) throw;
stream.Position = start_pos;
eos = true;
}
catch (BadDataException) {
stream.Position = start_pos+1;
}
}
return contentBuffer.GetContents();
}
public bool Read(Stream stream, IRTMPContentSink sink)
{
var processed = false;
var eos = false;
while (!eos) {
retry:
var start_pos = stream.Position;
try {
switch (state) {
case ReaderState.Header:
{
var bin = ReadBytes(stream, 13, out eos);
if (eos) goto error;
var header = new FileHeader(bin);
if (header.IsValid) {
sink.OnFLVHeader();
state = ReaderState.Body;
}
else {
throw new BadDataException();
}
}
break;
case ReaderState.Body:
{
var bin = ReadBytes(stream, 11, out eos);
if (eos) goto error;
var read_valid = false;
var body = new FLVTag(this, bin);
if (body.IsValidHeader) {
if (!body.ReadBody(stream)) { eos = true; goto error; }
if (!body.ReadFooter(stream)) { eos = true; goto error; }
if (body.IsValidFooter) {
read_valid = true;
switch (body.Type) {
case FLVTag.TagType.Audio:
sink.OnAudio(body.ToRTMPMessage());
break;
case FLVTag.TagType.Video:
sink.OnVideo(body.ToRTMPMessage());
break;
case FLVTag.TagType.Script:
sink.OnData(new DataAMF0Message(body.ToRTMPMessage()));
break;
}
}
}
else {
stream.Position = start_pos;
var headerbin = ReadBytes(stream, 13, out eos);
if (eos) goto error;
var header = new FileHeader(headerbin);
if (header.IsValid) {
read_valid = true;
sink.OnFLVHeader();
}
}
if (!read_valid) {
stream.Position = start_pos+1;
var b = stream.ReadByte();
while (true) {
if (b<0) {
eos = true;
goto error;
}
if ((b & 0xC0)==0 && ((b & 0x1F)==8 || (b & 0x1F)==9 || (b & 0x1F)==18)) {
break;
}
b = stream.ReadByte();
}
stream.Position = stream.Position-1;
goto retry;
}
}
break;
}
processed = true;
}
catch (EndOfStreamException) {
stream.Position = start_pos;
eos = true;
}
catch (BadDataException) {
stream.Position = start_pos+1;
}
error:
if (eos) {
stream.Position = start_pos;
eos = true;
}
}
return processed;
}
public ParsedContent Read(Stream stream)
{
var processed = false;
var eos = false;
while (!eos)
{
var start_pos = stream.Position;
try {
switch (state)
{
case ReaderState.Header:
{
var bin = ReadBytes(stream, 13);
var header = new FileHeader(bin);
if (header.IsValid)
{
Logger.Info("FLV Header found");
contentBuffer.OnStart();
state = ReaderState.Body;
}
else
{
throw new BadDataException();
}
}
break;
case ReaderState.Body:
{
var bin = ReadBytes(stream, 11);
var read_valid = false;
var body = new FLVTag(bin);
if (body.IsValidHeader)
{
body.ReadBody(stream);
body.ReadFooter(stream);
if (body.IsValidFooter)
{
read_valid = true;
switch (body.Type)
{
case FLVTag.TagType.Audio:
contentBuffer.OnAudio(body.ToRTMPMessage());
break;
case FLVTag.TagType.Video:
contentBuffer.OnVideo(body.ToRTMPMessage());
break;
case FLVTag.TagType.Script:
contentBuffer.OnData(new RTMP.DataAMF0Message(body.ToRTMPMessage()));
break;
}
}
}
if (!read_valid)
{
stream.Position = start_pos;
var header = new FileHeader(ReadBytes(stream, 13));
if (header.IsValid)
{
Logger.Info("New FLV Header found");
read_valid = true;
contentBuffer.OnStart();
}
}
if (!read_valid)
{
throw new BadDataException();
}
}
break;
}
processed = true;
}
catch (EndOfStreamException) {
if (!processed)
{
throw;
}
stream.Position = start_pos;
eos = true;
}
catch (BadDataException) {
stream.Position = start_pos + 1;
}
}
return(contentBuffer.GetContents());
}
public ParsedContent Read(Stream stream)
{
var res = new ParsedContent();
var info = new AtomCollection(Channel.ChannelInfo.Extra);
var processed = false;
var eos = false;
while (!eos) {
var start_pos = stream.Position;
try {
switch (state) {
case ReaderState.Header:
{
var bin = ReadBytes(stream, 13);
var header = new FileHeader(bin);
if (header.IsValid) {
Logger.Info("FLV Header found");
fileHeader = header;
bin = header.Binary;
res.ContentHeader = new Content(position, bin);
res.Contents = null;
info.SetChanInfoType("FLV");
info.SetChanInfoStreamType("video/x-flv");
info.SetChanInfoStreamExt(".flv");
res.ChannelInfo = new ChannelInfo(info);
position = bin.Length;
tags.Clear();
state = ReaderState.Body;
}
else {
throw new BadDataException();
}
}
break;
case ReaderState.Body:
{
var bin = ReadBytes(stream, 11);
var read_valid = false;
var body = new FLVTag(bin);
if (body.IsValidHeader) {
body.ReadBody(stream);
body.ReadFooter(stream);
if (body.IsValidFooter) {
read_valid = true;
bin = body.Binary;
if (res.Contents==null) res.Contents = new List<Content>();
res.Contents.Add(new Content(position, bin));
tags.AddLast(new TagDesc { Timestamp=body.Timestamp/1000.0, DataSize=body.DataSize });
var timespan = tags.Last.Value.Timestamp-tags.First.Value.Timestamp;
if (timespan>=30.0) {
var sz = tags.Take(tags.Count-1).Sum(t => t.DataSize);
info.SetChanInfoBitrate((int)(sz*8/timespan+900)/1000);
res.ChannelInfo = new ChannelInfo(info);
while (tags.Count>1) tags.RemoveFirst();
}
position += bin.Length;
}
}
if (!read_valid) {
stream.Position = start_pos;
var header = new FileHeader(ReadBytes(stream, 13));
if (header.IsValid) {
Logger.Info("New FLV Header found");
read_valid = true;
fileHeader = header;
bin = header.Binary;
res.ContentHeader = new Content(0, bin);
res.Contents = null;
info.SetChanInfoType("FLV");
info.SetChanInfoStreamType("video/x-flv");
info.SetChanInfoStreamExt(".flv");
res.ChannelInfo = new ChannelInfo(info);
tags.Clear();
position = bin.Length;
}
}
if (!read_valid) throw new BadDataException();
}
break;
}
processed = true;
}
catch (EndOfStreamException) {
if (!processed) throw;
stream.Position = start_pos;
eos = true;
}
catch (BadDataException) {
stream.Position = start_pos+1;
}
}
return res;
}
