/// <summary>
/// Corutine that captures an image from the camera, obtains its relevant data
/// and sends the corresponding header and chunk messages.
/// </summary>
/// <returns>IEnumerator to be run.</returns>
protected override IEnumerator SendStream()
{
uint textId = nextId;
nextId += 1;
Debug.Log("Sending snapshoot with ID " + textId + ".");
//Texture2D texture = Paint(1000);
int minTexSide = Mathf.Min(cam.width, cam.height);
int x = minTexSide == cam.width ? 0 : (cam.width - minTexSide) / 2;
int y = minTexSide == cam.height ? 0 : (cam.height - minTexSide) / 2;
Texture2D texture = new Texture2D(minTexSide, minTexSide);
texture.SetPixels(cam.GetPixels(x, y, minTexSide, minTexSide));
texture.Apply(true);
TextureScale.Bilinear(texture, resolution, resolution);
//lastCapturedFrame = texture;
Color32[] pixelData = texture.GetPixels32(0);
int size = Mathf.FloorToInt(pixelData.Length / Mathf.Ceil(pixelData.Length * 4.0f / maxChunkSize));
Debug.Log("Chunk size " + size);
var headerMessage = new TextureHeaderMessage(networkIdentity.netId.Value, textId, texture.width, texture.height, size);
SendHeaderMessage(textureMsgType, headerMessage);
List <(int, Color32[], int)> chunks = DivideArrayInChunks(pixelData, size);
foreach (var chunk in chunks)
{
var chunkMessage = new TextureChunkMessage(networkIdentity.netId.Value, textId, chunk.Item1, chunk.Item2, chunk.Item3);
SendChunkMessage(textureMsgType, chunkMessage);
}
Debug.Log("SnapShoot for ID " + textId + " has been sent.");
yield return(new WaitForSeconds(0.01f));
}
/// <summary>
/// Saves on the data structure the data contained in a chunk.
/// </summary>
/// <param name="row">Image's chunk message.</param>
private void SaveChunk(TextureChunkMessage row)
{
TextureStruc textureStruc = msgData[row.id];
for (int i = 0; i < row.data.Length && i < row.size && textureStruc.pixelsReceived < textureStruc.data.Length; i++)
{
textureStruc.data[i + row.order * textureStruc.chunkSize] = row.data[i];
textureStruc.pixelsReceived += 1;
}
msgData[row.id] = textureStruc;
Debug.Log(textureStruc.pixelsReceived + "/" + textureStruc.data.Length
+ " pixels currently recived for ID " + row.id + ".");
}
/// <summary>
/// Processes the chunk messages received on the client.
/// </summary>
/// <param name="row">Image's chunk message.</param>
private void OnTextureChunkReceived(TextureChunkMessage row)
{
msgData.AddChunk(row, SaveChunk);
}
