void SendTexture(Agent agent, AssetTexture texture, int discardLevel, int packet, float priority)
{
ImageDownload download = new ImageDownload(texture, agent, discardLevel, priority, packet);
Logger.DebugLog(String.Format(
"[Periscope] Starting new texture transfer for {0}, DiscardLevel: {1}, Priority: {2}, Start: {3}, End: {4}, Total: {5}",
texture.AssetID, discardLevel, priority, download.CurrentPacket, download.StopPacket, download.TexturePacketCount()));
// Send initial data
ImageDataPacket data = new ImageDataPacket();
data.ImageID.Codec = (byte)ImageCodec.J2C;
data.ImageID.ID = download.Texture.AssetID;
data.ImageID.Packets = (ushort)download.TexturePacketCount();
data.ImageID.Size = (uint)download.Texture.AssetData.Length;
// The first bytes of the image are always sent in the ImageData packet
data.ImageData = new ImageDataPacket.ImageDataBlock();
int imageDataSize = (download.Texture.AssetData.Length >= ImageDownload.FIRST_IMAGE_PACKET_SIZE) ?
ImageDownload.FIRST_IMAGE_PACKET_SIZE : download.Texture.AssetData.Length;
try
{
data.ImageData.Data = new byte[imageDataSize];
Buffer.BlockCopy(download.Texture.AssetData, 0, data.ImageData.Data, 0, imageDataSize);
}
catch (Exception ex)
{
Logger.Log(String.Format("{0}: imageDataSize={1}", ex.Message, imageDataSize),
Helpers.LogLevel.Error);
}
server.UDP.SendPacket(agent.Avatar.ID, data, PacketCategory.Texture);
// Check if ImagePacket packets need to be sent to complete this transfer
if (download.CurrentPacket <= download.StopPacket)
{
// Insert this download into the dictionary
lock (currentDownloads)
currentDownloads[texture.AssetID] = download;
// Send all of the remaining packets
ThreadPool.QueueUserWorkItem(
delegate(object obj)
{
while (download.CurrentPacket <= download.StopPacket)
{
if (download.Priority == 0.0f && download.DiscardLevel == -1)
break;
lock (download)
{
int imagePacketSize = (download.CurrentPacket == download.TexturePacketCount() - 1) ?
download.LastPacketSize() : ImageDownload.IMAGE_PACKET_SIZE;
ImagePacketPacket transfer = new ImagePacketPacket();
transfer.ImageID.ID = texture.AssetID;
transfer.ImageID.Packet = (ushort)download.CurrentPacket;
transfer.ImageData.Data = new byte[imagePacketSize];
try
{
Buffer.BlockCopy(download.Texture.AssetData, download.CurrentBytePosition(),
transfer.ImageData.Data, 0, imagePacketSize);
}
catch (Exception ex)
{
Logger.Log(String.Format(
"{0}: CurrentBytePosition()={1}, AssetData.Length={2} imagePacketSize={3}",
ex.Message, download.CurrentBytePosition(), download.Texture.AssetData.Length,
imagePacketSize), Helpers.LogLevel.Error);
}
server.UDP.SendPacket(agent.Avatar.ID, transfer, PacketCategory.Texture);
++download.CurrentPacket;
}
}
Logger.DebugLog("Completed image transfer for " + texture.AssetID.ToString());
// Transfer is complete, remove the reference
lock (currentDownloads)
currentDownloads.Remove(texture.AssetID);
}
);
}
}
