ASFStream::ASFStream(Common::SeekableReadStream *stream, bool dispose) : _stream(stream), _disposeAfterUse(dispose) {
_extraData = 0;
_lastPacket = 0;
_curPacket = 0;
_codec = 0;
_curAudioStream = 0;
_curSequenceNumber = 1; // They always start at one
ASFGUID guid = ASFGUID(*_stream);
if (guid != s_asfHeader)
throw Common::Exception("ASFStream: Missing asf header");
_stream->readUint64LE();
_stream->readUint32LE();
_stream->readByte();
_stream->readByte();
for (;;) {
uint64 startPos = _stream->pos();
guid = ASFGUID(*_stream);
uint64 size = _stream->readUint64LE();
if (_stream->eos())
throw Common::Exception("ASFStream: Unexpected eos");
// TODO: Parse each chunk
if (guid == s_asfFileHeader) {
parseFileHeader();
} else if (guid == s_asfHead1) {
// Should be safe to ignore
} else if (guid == s_asfComment) {
// Ignored
} else if (guid == s_asfStreamHeader) {
parseStreamHeader();
} else if (guid == s_asfCodecComment) {
// TODO
} else if (guid == s_asfDataHeader) {
// Done parsing the header
break;
} else if (guid == s_asfExtendedHeader) {
// TODO
} else if (guid == s_asfStreamBitRate) {
// Ignored
} else
warning("Found unknown ASF GUID: %s", guid.toString().c_str());
_stream->seek(startPos + size);
}
// Skip to the beginning of the packets
_stream->skip(26);
_rewindPos = _stream->pos();
}
void ASFStream::load() {
ASFGUID guid = ASFGUID(*_stream);
if (guid != s_asfHeader)
throw Common::Exception("ASFStream: Missing asf header");
_stream->readUint64LE();
_stream->readUint32LE();
_stream->readByte();
_stream->readByte();
for (;;) {
size_t startPos = _stream->pos();
guid = ASFGUID(*_stream);
uint64 size = _stream->readUint64LE();
if (_stream->eos())
throw Common::Exception("ASFStream: Unexpected eos");
// TODO: Parse each chunk
if (guid == s_asfFileHeader) {
parseFileHeader();
} else if (guid == s_asfHead1) {
// Should be safe to ignore
} else if (guid == s_asfComment) {
// Ignored
} else if (guid == s_asfStreamHeader) {
parseStreamHeader();
} else if (guid == s_asfCodecComment) {
// TODO
} else if (guid == s_asfDataHeader) {
// Done parsing the header
break;
} else if (guid == s_asfExtendedHeader) {
// TODO
} else if (guid == s_asfStreamBitRate) {
// Ignored
} else
warning("Found unknown ASF GUID: %s", guid.toString().c_str());
_stream->seek(startPos + size);
}
// Skip to the beginning of the packets
_stream->skip(26);
_rewindPos = _stream->pos();
}
