/// <include file='IAdbClient.xml' path='/IAdbClient/GetFrameBuffer/*'/>
public async Task <Image> GetFrameBuffer(DeviceData device, CancellationToken cancellationToken)
{
using (IAdbSocket socket = Factories.AdbSocketFactory(this.EndPoint))
{
// Select the target device
this.SetDevice(socket, device);
// Send the framebuffer command
socket.SendAdbRequest("framebuffer:");
socket.ReadAdbResponse();
// The result first is a FramebufferHeader object,
var size = Marshal.SizeOf(typeof(FramebufferHeader));
var headerData = new byte[size];
await socket.ReadAsync(headerData, cancellationToken).ConfigureAwait(false);
var header = FramebufferHeader.Read(headerData);
// followed by the actual framebuffer content
var imageData = new byte[header.Size];
socket.Read(imageData);
// Convert the framebuffer to an image, and return that.
return(header.ToImage(imageData));
}
}
/// <summary>
/// Asynchronously refreshes the framebuffer: fetches the latest framebuffer data from the device. Access the <see cref="Header"/>
/// and <see cref="Data"/> properties to get the updated framebuffer data.
/// </summary>
/// <param name="cancellationToken">
/// A <see cref="CancellationToken"/> which can be used to cancel the asynchronous task.
/// </param>
/// <returns>
/// A <see cref="Task"/> which represents the asynchronous operation.
/// </returns>
public async Task RefreshAsync(CancellationToken cancellationToken)
{
var socket = Factories.AdbSocketFactory(this.client.EndPoint);
// Select the target device
this.client.SetDevice(socket, this.Device);
// Send the framebuffer command
socket.SendAdbRequest("framebuffer:");
socket.ReadAdbResponse();
// The result first is a FramebufferHeader object,
await socket.ReadAsync(this.headerData, cancellationToken).ConfigureAwait(false);
if (!this.headerInitialized)
{
this.Header = FramebufferHeader.Read(this.headerData);
this.headerInitialized = true;
}
if (this.Data == null || this.Data.Length < this.Header.Size)
{
this.Data = new byte[this.Header.Size];
}
// followed by the actual framebuffer content
await socket.ReadAsync(this.Data, (int)this.Header.Size, cancellationToken).ConfigureAwait(false);
}
/// <summary>
/// Asynchronously refreshes the framebuffer: fetches the latest framebuffer data from the device. Access the <see cref="Header"/>
/// and <see cref="Data"/> properties to get the updated framebuffer data.
/// </summary>
/// <param name="cancellationToken">
/// A <see cref="CancellationToken"/> which can be used to cancel the asynchronous task.
/// </param>
/// <returns>
/// A <see cref="Task"/> which represents the asynchronous operation.
/// </returns>
public async Task RefreshAsync(CancellationToken cancellationToken)
{
this.EnsureNotDisposed();
using (var socket = Factories.AdbSocketFactory(this.client.EndPoint))
{
// Select the target device
this.client.SetDevice(socket, this.Device);
// Send the framebuffer command
socket.SendAdbRequest("framebuffer:");
socket.ReadAdbResponse();
// The result first is a FramebufferHeader object,
await socket.ReadAsync(this.headerData, cancellationToken).ConfigureAwait(false);
if (!this.headerInitialized)
{
this.Header = FramebufferHeader.Read(this.headerData);
this.headerInitialized = true;
}
if (this.Data == null || this.Data.Length < this.Header.Size)
{
#if !NETFX
// Optimization on .NET Core: Use the BufferPool to rent buffers
if (this.Data != null)
{
ArrayPool <byte> .Shared.Return(this.Data, clearArray : false);
}
this.Data = ArrayPool <byte> .Shared.Rent((int)this.Header.Size);
#else
this.Data = new byte[(int)this.Header.Size];
#endif
}
// followed by the actual framebuffer content
await socket.ReadAsync(this.Data, (int)this.Header.Size, cancellationToken).ConfigureAwait(false);
}
}