public Flv(FileInfo file, bool generateMetadata) {
_file = file;
_generateMetadata = generateMetadata;
int count = 0;
if (!_generateMetadata) {
try {
FlvReader reader = new FlvReader(_file);
ITag tag = null;
while (reader.HasMoreTags() && (++count < 5)) {
tag = reader.ReadTag();
if (tag.DataType == IOConstants.TYPE_METADATA) {
if (_metaService == null)
_metaService = new MetaService(_file);
_metaData = _metaService.ReadMetaData(tag.Body);
}
}
reader.Close();
} catch (Exception ex) {
#if !SILVERLIGHT
log.Error("An error occured looking for metadata:", ex);
#endif
}
}
}
public void ReadTag_WhenStateIsBeforeBackpointer_ThrowsInvalidOperationException()
{
// Arrange
_flvReader = _flvReaderObjectMother.CreateFlvReaderWithBackpointer();
// Act and assert.
Assert.Throws <InvalidOperationException>(() => _flvReader.ReadTag());
}
public void ReadTag_WhenStateIsBeforeTag_ReturnsTag()
{
// Arrange
_flvReader = _flvReaderObjectMother.CreateFlvReaderWithTag();
// Act
var tag = _flvReader.ReadTag();
// Assert
Assert.NotNull(tag);
}
public void ReadTag_ReachedEndOfStream_ReturnsNull()
{
// Arrange
_flvReader = _flvReaderObjectMother.CreateEmptyFlvReader();
_flvReader.MoveToBeforeTagState();
// Act
var tag = _flvReader.ReadTag();
// Assert
Assert.Null(tag);
}
/// <summary>
/// Initiates writing of the Metadata.
/// </summary>
/// <param name="meta">Metadata to write.</param>
public void Write(MetaData meta) {
// Get cue points, FLV reader and writer
MetaCue[] metaArr = meta.MetaCue;
FlvReader reader = new FlvReader(_file, false);
FlvWriter writer = new FlvWriter(_output, false);
ITag tag = null;
// Read first tag
if (reader.HasMoreTags()) {
tag = reader.ReadTag();
if (tag.DataType == IOConstants.TYPE_METADATA) {
if (!reader.HasMoreTags())
throw new IOException("File we're writing is metadata only?");
}
}
meta.Duration = (double)reader.Duration / 1000;
meta.VideoCodecId = reader.VideoCodecId;
meta.AudioCodecId = reader.AudioCodecId;
ITag injectedTag = InjectMetaData(meta, tag);
injectedTag.PreviousTagSize = 0;
tag.PreviousTagSize = injectedTag.BodySize;
writer.WriteHeader();
writer.WriteTag(injectedTag);
writer.WriteTag(tag);
int cuePointTimeStamp = 0;
int counter = 0;
if (metaArr != null) {
Array.Sort(metaArr);
cuePointTimeStamp = GetTimeInMilliseconds(metaArr[0]);
}
while (reader.HasMoreTags()) {
tag = reader.ReadTag();
// if there are cuePoints in the array
if (counter < metaArr.Length) {
// If the tag has a greater timestamp than the
// cuePointTimeStamp, then inject the tag
while (tag.Timestamp > cuePointTimeStamp) {
injectedTag = InjectMetaCue(metaArr[counter], tag);
writer.WriteTag(injectedTag);
tag.PreviousTagSize = injectedTag.BodySize;
// Advance to the next CuePoint
counter++;
if (counter > (metaArr.Length - 1)) {
break;
}
cuePointTimeStamp = GetTimeInMilliseconds(metaArr[counter]);
}
}
if (tag.DataType != IOConstants.TYPE_METADATA) {
writer.WriteTag(tag);
}
}
writer.Close();
}
public void ReadTag_WhenStateIsBeforeTag_ReturnsTag()
{
// Arrange
_flvReader = _flvReaderObjectMother.CreateFlvReaderWithTag();
// Act
var tag = _flvReader.ReadTag();
// Assert
Assert.NotNull(tag);
}
public void ReadTag_WhenStateIsBeforeHeader_ThrowsInvalidOperationException()
{
// Arrange
_flvReader = _flvReaderObjectMother.CreateFlvReaderWithHeader();
// Act and assert.
Assert.Throws<InvalidOperationException>(() => _flvReader.ReadTag());
}
public void ReadTag_ReachedEndOfStream_ReturnsNull()
{
// Arrange
_flvReader = _flvReaderObjectMother.CreateEmptyFlvReader();
_flvReader.MoveToBeforeTagState();
// Act
var tag = _flvReader.ReadTag();
// Assert
Assert.Null(tag);
}