public BitmapStream askBitmapStream(int streamCount)
{
video_stream_fractions = new List <byte[]>(NUM_FRACTION);
video = new List <int>(NUM_FRACTION);
video_writing = new List <int>(NUM_FRACTION);
for (int i = 0; i < NUM_FRACTION; i++)
{
video_stream_fractions.Add(new byte[0]);
video.Add(0);
video_writing.Add(0);
}
video_stream = new CompressedBitmapStream();
//“有这个视频”名单空的，返回null
if (video_client.Count == 0)
{
return(null);
}
//给所有名单里的人发请求
Connector conn = find_conn(conn_video_header, video_client[streamCount % video_client.Count]);
Package pack = new Package("request_video");
pack.header.Add("" + streamCount);
conn.send(pack);
while (true)
{
//等待回复
//如果某个线程知道有回复了，就把video改成1，然后读data写到video_stream（buffer）里面
int tag = 1;
for (int i = 0; i < NUM_FRACTION; i++)
{
if (video[i] == 0)
{
tag = 0;
break;
}
}
if (tag == 1)
{
MemoryStream stream = new MemoryStream();
BinaryFormatter formatter = new BinaryFormatter();
for (int i = 0; i < NUM_FRACTION; i++)
{
stream.Write(video_stream_fractions[i], 0, video_stream_fractions[i].Length);
}
stream.Position = 0;
//解压缩一下。。。
/*byte[] data = stream.ToArray();
* stream = new MemoryStream();
* GZipStream decomp = new GZipStream(stream,CompressionMode.Decompress);
* decomp.Read(data, 0, data.Length);
*/
video_stream = (CompressedBitmapStream)formatter.Deserialize(stream);
return(video_stream.toBitmapStream());
}
}
}
public void listen_video_header()
{
while (true)
{
Console.Out.WriteLine("listen_video_header is running...");
Package pack = conn.recv();
if (pack == null)
{
continue;
}
if (pack.type == "ask_video")
{
/*
* header for request:
* [0] Name
*/
List <String> header = new List <String>(pack.header);
String[] tmp = header[0].Split('\\');
String tmp_addr = Utils.search_addr_from_list(tmp[tmp.Length - 1], Client.media);
if (tmp_addr != "" && File.Exists(tmp_addr))
{
//该文件存在，载入到本线程的reader里面
//接受的时候不需要reader，只有传的时候需要，所以一个reader就够了
/*
* type of resp: has_video
*
* reader the info from the video file and response a header
*
* header of resp:
* [0] FrameRate(给player设置interval)
* [1] Height
* [2] Width
*
* 那个wmv是历史遗留问题反正avi也是这个参数。。。
*
*/
header = reader.loadFile(tmp_addr, "wmv");
for (int i = 0; i < header.Count; i++)
{
Console.Out.WriteLine("{0}: {1}", i, header[i]);
}
Package pack_resp = new Package("has_video");
pack_resp.header = new List <string>(header);
Connector conn_resp = Client.find_conn(Client.conn_video_data, pack.from);
conn_resp.send(pack_resp);
}
else
{
Package pack_resp = new Package("no_video");
Connector conn_resp = Client.find_conn(Client.conn_video_data, pack.from);
conn_resp.send(pack_resp);
}
}
else if (pack.type == "request_video" && num_frac == 0)
{
/*
* header for request:
* [0] 第几个bitmapStream
*/
List <String> header = new List <String>(pack.header);
if (reader.finish == 1)
{
//空了，给一个end_video
Package pack_resp = new Package("end_video");
List <Connector> conn_resp = Client.find_conns(Client.conn_video_data, pack.from);
conn_resp[0].send(pack_resp);
}
else
{
BitmapStream bitmapStream = reader.loadBitmapStream_count(Int32.Parse(header[0]));
CompressedBitmapStream comp_bitmapStream = new CompressedBitmapStream(bitmapStream);
//把object serialize成memoryStream,再到byte[]
MemoryStream stream = new MemoryStream();
BinaryFormatter formatter = new BinaryFormatter();
formatter.Serialize(stream, comp_bitmapStream);
byte[] data = stream.ToArray();
//byte[] m = Compress.compress(data);
List <byte[]> data_list = new List <byte[]>();
int offset = (int)data.Length / Client.NUM_FRACTION;
for (int i = 0; i < Client.NUM_FRACTION; i++)
{
byte[] tmp_data;
if (i < Client.NUM_FRACTION - 1)
{
tmp_data = new byte[offset];
}
else
{
tmp_data = new byte[data.Length - (Client.NUM_FRACTION - 1) * offset];
}
System.Buffer.BlockCopy(data, i * offset, tmp_data, 0, tmp_data.Length);
data_list.Add(tmp_data);
}
//发回去
List <Connector> conn_resp = Client.find_conns(Client.conn_video_data, pack.from);
if (conn_resp.Count == 0)
{
return;
}
for (int i = 0; i < Client.NUM_FRACTION; i++)
{
Package pack_resp = new Package("video_resp");
pack_resp.data = data_list[i];
if (conn_resp[i].ip_send == "")
{
return;
}
send_thread a = new send_thread(conn_resp[i], pack_resp);
a.start();
}
}
}
}
}
