GUACAMOLE-377: Leverage RDPGFX to report remote frame statistics to the client.

This commit is contained in:
Michael Jumper 2021-09-02 17:07:58 -07:00
parent 52c8683bcf
commit 669e02b4dc
4 changed files with 88 additions and 5 deletions

View File

@ -372,12 +372,27 @@ BOOL guac_rdp_gdi_set_bounds(rdpContext* context, const rdpBounds* bounds) {
}
BOOL guac_rdp_gdi_begin_paint(rdpContext* context) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
/* A new frame is beginning */
rdp_client->in_frame = 1;
return TRUE;
}
BOOL guac_rdp_gdi_end_paint(rdpContext* context) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
rdpGdi* gdi = context->gdi;
/* The current frame has ended */
rdp_client->in_frame = 0;
/* Ignore paint if GDI output is suppressed */
if (gdi->suppressOutput)
return TRUE;
@ -396,12 +411,30 @@ BOOL guac_rdp_gdi_end_paint(rdpContext* context) {
gdi->primary_buffer + 4*x + y*gdi->stride,
CAIRO_FORMAT_RGB24, w, h, gdi->stride);
guac_timestamp frame_end = guac_timestamp_current();
int time_elapsed = frame_end - rdp_client->frame_start;
/* Send surface to buffer */
guac_common_surface_draw(rdp_client->display->default_surface, x, y, surface);
/* Free surface */
cairo_surface_destroy(surface);
/* A new frame has been received from the RDP server and processed */
rdp_client->frames_received++;
/* Flush a new frame if the client is ready for it */
if (time_elapsed >= guac_client_get_processing_lag(client)) {
guac_common_display_flush(rdp_client->display);
guac_client_end_multiple_frames(client, rdp_client->frames_received);
guac_socket_flush(client->socket);
rdp_client->frame_start = frame_end;
rdp_client->frames_received = 0;
}
return TRUE;
}

View File

@ -156,8 +156,22 @@ BOOL guac_rdp_gdi_opaquerect(rdpContext* context,
BOOL guac_rdp_gdi_set_bounds(rdpContext* context, const rdpBounds* bounds);
/**
* Handler called when a paint operation is complete. We don't actually
* use this, but FreeRDP requires it. Calling this function has no effect.
* Handler called when a paint operation is beginning. This function is
* expected to be called by the FreeRDP GDI implementation of RemoteFX when a
* new frame is beginning.
*
* @param context
* The rdpContext associated with the current RDP session.
*
* @return
* TRUE if successful, FALSE otherwise.
*/
BOOL guac_rdp_gdi_begin_paint(rdpContext* context);
/**
* Handler called when a paint operation is complete. This function is
* expected to be called by the FreeRDP GDI implementation of RemoteFX when a
* new frame has been completed.
*
* @param context
* The rdpContext associated with the current RDP session.

View File

@ -179,6 +179,7 @@ BOOL rdp_freerdp_pre_connect(freerdp* instance) {
/* Set up GDI */
instance->update->DesktopResize = guac_rdp_gdi_desktop_resize;
instance->update->BeginPaint = guac_rdp_gdi_begin_paint;
instance->update->EndPaint = guac_rdp_gdi_end_paint;
instance->update->SetBounds = guac_rdp_gdi_set_bounds;
@ -530,6 +531,7 @@ static int guac_rdp_handle_connection(guac_client* client) {
rdp_client->rdp_inst = rdp_inst;
guac_timestamp last_frame_end = guac_timestamp_current();
rdp_client->frame_start = guac_timestamp_current();
/* Signal that reconnect has been completed */
guac_rdp_disp_reconnect_complete(rdp_client->disp);
@ -569,6 +571,13 @@ static int guac_rdp_handle_connection(guac_client* client) {
break;
}
/* Continue handling inbound data if we are in the middle of an RDP frame */
if (rdp_client->in_frame) {
wait_result = rdp_guac_client_wait_for_messages(client, GUAC_RDP_FRAME_START_TIMEOUT);
if (wait_result >= 0)
continue;
}
/* Calculate time remaining in frame */
frame_end = guac_timestamp_current();
frame_remaining = frame_start + GUAC_RDP_FRAME_DURATION
@ -612,11 +621,17 @@ static int guac_rdp_handle_connection(guac_client* client) {
guac_client_abort(client, GUAC_PROTOCOL_STATUS_UPSTREAM_UNAVAILABLE,
"Connection closed.");
/* Flush frame only if successful */
else {
/* Flush frame only if successful and an RDP frame is not known to be
* in progress */
else if (rdp_client->frames_received) {
guac_common_display_flush(rdp_client->display);
guac_client_end_frame(client);
guac_client_end_multiple_frames(client, rdp_client->frames_received);
guac_socket_flush(client->socket);
rdp_client->frame_start = guac_timestamp_current();
rdp_client->frames_received = 0;
}
}

View File

@ -91,6 +91,27 @@ typedef struct guac_rdp_client {
*/
guac_common_surface* current_surface;
/**
* Whether the RDP server has reported that a new frame is in progress, and
* we are now receiving updates relevant to that frame.
*/
int in_frame;
/**
* The number of distinct frames received from the RDP server since last
* flush, if the RDP server supports reporting frame boundaries. If the RDP
* server does not support tracking frames, this will be zero.
*/
int frames_received;
/**
* The server timestamp of the end of the last frame received from the RDP
* server, as returned by guac_timestamp_current(), if the RDP server
* supports reporting frame boundaries. If the RDP server does not support
* tracking frames, this will be zero.
*/
guac_timestamp frame_start;
/**
* The current state of the keyboard with respect to the RDP session.
*/