// Must be in sync with StreamConfig::Encoding.
enum Encoding { STREAM_ENCODING_RAW = 0, STREAM_ENCODING_METACUBE };
- Stream(const std::string &stream_id, size_t backlog_size, Encoding encoding);
+ Stream(const std::string &stream_id, size_t backlog_size, size_t prebuffering_bytes, Encoding encoding);
~Stream();
// Serialization/deserialization.
// How many bytes <data_fd> can hold (the buffer size).
size_t backlog_size;
+ // How many bytes we need to have in the backlog before we start
+ // sending (in practice, we will then send all of them at once,
+ // and then start sending at the normal rate thereafter).
+ // This is basically to force a buffer on the client, which can help
+ // if the client expects us to be able to fill up the buffer much
+ // faster than realtime (ie., it expects a static file).
+ size_t prebuffering_bytes;
+
// How many bytes this stream have received. Can very well be larger
// than <backlog_size>, since the buffer wraps.
size_t bytes_received;
// Queued data, if any. Protected by <queued_data_mutex>.
// The data pointers in the iovec are owned by us.
- std::vector<iovec> queued_data;
-
- // Index of the last element in queued_data that is suitable to start streaming at.
- // -1 if none. Protected by <queued_data_mutex>.
- int queued_data_last_starting_point;
+ struct DataElement {
+ iovec data;
+ StreamStartSuitability suitable_for_stream_start;
+ };
+ std::vector<DataElement> queued_data;
// Put client to sleep, since there is no more data for it; we will on
// longer listen on POLLOUT until we get more data. Also, it will be put
// Adds data directly to the stream file descriptor, without adding headers or
// going through <queued_data>.
// You should hold the owning Server's <mutex>.
- void add_data_raw(const std::vector<iovec> &data);
+ void add_data_raw(const std::vector<DataElement> &data);
};
#endif // !defined(_STREAM_H)