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GUACAMOLE-377: Merge support for RemoteFX.

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This commit is contained in:
James Muehlner 2022-06-09 17:41:23 -07:00 committed by GitHub
commit d4cd9b3e3a
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19 changed files with 577 additions and 76 deletions
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8
src/libguac/client.c
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@ -413,15 +413,19 @@ void* guac_client_for_user(guac_client* client, guac_user* user,
}
int guac_client_end_frame(guac_client* client) {
return guac_client_end_multiple_frames(client, 0);
}
int guac_client_end_multiple_frames(guac_client* client, int frames) {
/* Update and send timestamp */
client->last_sent_timestamp = guac_timestamp_current();
/* Log received timestamp and calculated lag (at TRACE level only) */
guac_client_log(client, GUAC_LOG_TRACE, "Server completed "
"frame %" PRIu64 "ms.", client->last_sent_timestamp);
"frame %" PRIu64 "ms (%i logical frames)", client->last_sent_timestamp, frames);
return guac_protocol_send_sync(client->socket, client->last_sent_timestamp);
return guac_protocol_send_sync(client->socket, client->last_sent_timestamp, frames);
}

39
src/libguac/guacamole/client.h
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@ -509,18 +509,47 @@ void* guac_client_for_user(guac_client* client, guac_user* user,
guac_user_callback* callback, void* data);
/**
* Marks the end of the current frame by sending a "sync" instruction to
* all connected users. This instruction will contain the current timestamp.
* The last_sent_timestamp member of guac_client will be updated accordingly.
* Marks the end of the current frame by sending a "sync" instruction to all
* connected users, where the number of input frames that were considered in
* creating this frame is either unknown or inapplicable. This instruction will
* contain the current timestamp. The last_sent_timestamp member of guac_client
* will be updated accordingly.
*
* If an error occurs sending the instruction, a non-zero value is
* returned, and guac_error is set appropriately.
*
* @param client The guac_client which has finished a frame.
* @return Zero on success, non-zero on error.
* @param client
* The guac_client which has finished a frame.
*
* @return
* Zero on success, non-zero on error.
*/
int guac_client_end_frame(guac_client* client);
/**
* Marks the end of the current frame by sending a "sync" instruction to all
* connected users, where that frame may combine or otherwise represent the
* changes of an arbitrary number of input frames. This instruction will
* contain the current timestamp, as well as the number of frames that were
* considered in creating that frame. The last_sent_timestamp member of
* guac_client will be updated accordingly.
*
* If an error occurs sending the instruction, a non-zero value is
* returned, and guac_error is set appropriately.
*
* @param client
* The guac_client which has finished a frame.
*
* @param frames
* The number of distinct frames that were considered or combined when
* generating the current frame, or zero if the boundaries of relevant
* frames are unknown.
*
* @return
* Zero on success, non-zero on error.
*/
int guac_client_end_multiple_frames(guac_client* client, int frames);
/**
* Initializes the given guac_client using the initialization routine provided
* by the plugin corresponding to the named protocol. This will automatically

19
src/libguac/guacamole/protocol.h
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@ -363,11 +363,22 @@ int guac_protocol_send_select(guac_socket* socket, const char* protocol);
* If an error occurs sending the instruction, a non-zero value is
* returned, and guac_error is set appropriately.
*
* @param socket The guac_socket connection to use.
* @param timestamp The current timestamp (in milliseconds).
* @return Zero on success, non-zero on error.
* @param socket
* The guac_socket connection to use.
*
* @param timestamp
* The current timestamp (in milliseconds).
*
* @param frames
* The number of distinct frames that were considered or combined when
* generating the frame terminated by this instruction, or zero if the
* boundaries of relevant frames are unknown.
*
* @return
* Zero on success, non-zero on error.
*/
int guac_protocol_send_sync(guac_socket* socket, guac_timestamp timestamp);
int guac_protocol_send_sync(guac_socket* socket, guac_timestamp timestamp,
int frames);
/* OBJECT INSTRUCTIONS */

5
src/libguac/protocol.c
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@ -1181,7 +1181,8 @@ int guac_protocol_send_start(guac_socket* socket, const guac_layer* layer,
}
int guac_protocol_send_sync(guac_socket* socket, guac_timestamp timestamp) {
int guac_protocol_send_sync(guac_socket* socket, guac_timestamp timestamp,
int frames) {
int ret_val;
@ -1189,6 +1190,8 @@ int guac_protocol_send_sync(guac_socket* socket, guac_timestamp timestamp) {
ret_val =
guac_socket_write_string(socket, "4.sync,")
|| __guac_socket_write_length_int(socket, timestamp)
|| guac_socket_write_string(socket, ",")
|| __guac_socket_write_length_int(socket, frames)
|| guac_socket_write_string(socket, ";");
guac_socket_instruction_end(socket);

28
src/libguac/user-handlers.c
View File

@ -120,31 +120,39 @@ int __guac_handle_sync(guac_user* user, int argc, char** argv) {
/* Calculate length of frame, including network and processing lag */
frame_duration = current - timestamp;
/* Update lag statistics if at least one frame has been rendered */
/* Calculate processing lag portion of length of frame */
int frame_processing_lag = 0;
if (user->last_frame_duration != 0) {
/* Calculate lag using the previous frame as a baseline */
int processing_lag = frame_duration - user->last_frame_duration;
frame_processing_lag = frame_duration - user->last_frame_duration;
/* Adjust back to zero if cumulative error leads to a negative
* value */
if (processing_lag < 0)
processing_lag = 0;
user->processing_lag = processing_lag;
if (frame_processing_lag < 0)
frame_processing_lag = 0;
}
/* Record baseline duration of frame by excluding lag */
user->last_frame_duration = frame_duration - user->processing_lag;
/* Record baseline duration of frame by excluding lag (this is the
* network round-trip time) */
int estimated_rtt = frame_duration - frame_processing_lag;
user->last_frame_duration = estimated_rtt;
/* Calculate cumulative accumulated processing lag relative to server timeline */
int processing_lag = current - user->last_received_timestamp - estimated_rtt;
if (processing_lag < 0)
processing_lag = 0;
user->processing_lag = processing_lag;
}
/* Log received timestamp and calculated lag (at TRACE level only) */
guac_user_log(user, GUAC_LOG_TRACE,
"User confirmation of frame %" PRIu64 "ms received "
"at %" PRIu64 "ms (processing_lag=%ims)",
timestamp, current, user->processing_lag);
"at %" PRIu64 "ms (processing_lag=%ims, estimated_rtt=%ims)",
timestamp, current, user->processing_lag, user->last_frame_duration);
if (user->sync_handler)
return user->sync_handler(user, timestamp);

2
src/protocols/rdp/Makefile.am
View File

@ -57,6 +57,7 @@ libguac_client_rdp_la_SOURCES = \
channels/rdpdr/rdpdr-printer.c \
channels/rdpdr/rdpdr.c \
channels/rdpei.c \
channels/rdpgfx.c \
channels/rdpsnd/rdpsnd-messages.c \
channels/rdpsnd/rdpsnd.c \
client.c \
@ -103,6 +104,7 @@ noinst_HEADERS = \
channels/rdpdr/rdpdr-printer.h \
channels/rdpdr/rdpdr.h \
channels/rdpei.h \
channels/rdpgfx.h \
channels/rdpsnd/rdpsnd-messages.h \
channels/rdpsnd/rdpsnd.h \
client.h \

14
src/protocols/rdp/channels/cliprdr.c
View File

@ -509,12 +509,12 @@ static UINT guac_rdp_cliprdr_format_data_response(CliprdrClientContext* cliprdr,
* @param context
* The rdpContext associated with the active RDP session.
*
* @param e
* @param args
* Event-specific arguments, mainly the name of the channel, and a
* reference to the associated plugin loaded for that channel by FreeRDP.
*/
static void guac_rdp_cliprdr_channel_connected(rdpContext* context,
ChannelConnectedEventArgs* e) {
ChannelConnectedEventArgs* args) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
@ -526,12 +526,12 @@ static void guac_rdp_cliprdr_channel_connected(rdpContext* context,
assert(clipboard != NULL);
/* Ignore connection event if it's not for the CLIPRDR channel */
if (strcmp(e->name, CLIPRDR_SVC_CHANNEL_NAME) != 0)
if (strcmp(args->name, CLIPRDR_SVC_CHANNEL_NAME) != 0)
return;
/* The structure pointed to by pInterface is guaranteed to be a
* CliprdrClientContext if the channel is CLIPRDR */
CliprdrClientContext* cliprdr = (CliprdrClientContext*) e->pInterface;
CliprdrClientContext* cliprdr = (CliprdrClientContext*) args->pInterface;
/* Associate FreeRDP CLIPRDR context and its Guacamole counterpart with
* eachother */
@ -562,12 +562,12 @@ static void guac_rdp_cliprdr_channel_connected(rdpContext* context,
* @param context
* The rdpContext associated with the active RDP session.
*
* @param e
* @param args
* Event-specific arguments, mainly the name of the channel, and a
* reference to the associated plugin loaded for that channel by FreeRDP.
*/
static void guac_rdp_cliprdr_channel_disconnected(rdpContext* context,
ChannelDisconnectedEventArgs* e) {
ChannelDisconnectedEventArgs* args) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
@ -579,7 +579,7 @@ static void guac_rdp_cliprdr_channel_disconnected(rdpContext* context,
assert(clipboard != NULL);
/* Ignore disconnection event if it's not for the CLIPRDR channel */
if (strcmp(e->name, CLIPRDR_SVC_CHANNEL_NAME) != 0)
if (strcmp(args->name, CLIPRDR_SVC_CHANNEL_NAME) != 0)
return;
/* Channel is no longer connected */

14
src/protocols/rdp/channels/disp.c
View File

@ -68,19 +68,19 @@ void guac_rdp_disp_free(guac_rdp_disp* disp) {
* @param context
* The rdpContext associated with the active RDP session.
*
* @param e
* @param args
* Event-specific arguments, mainly the name of the channel, and a
* reference to the associated plugin loaded for that channel by FreeRDP.
*/
static void guac_rdp_disp_channel_connected(rdpContext* context,
ChannelConnectedEventArgs* e) {
ChannelConnectedEventArgs* args) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
guac_rdp_disp* guac_disp = rdp_client->disp;
/* Ignore connection event if it's not for the Display Update channel */
if (strcmp(e->name, DISP_DVC_CHANNEL_NAME) != 0)
if (strcmp(args->name, DISP_DVC_CHANNEL_NAME) != 0)
return;
/* Init module with current display size */
@ -89,7 +89,7 @@ static void guac_rdp_disp_channel_connected(rdpContext* context,
guac_rdp_get_height(context->instance));
/* Store reference to the display update plugin once it's connected */
DispClientContext* disp = (DispClientContext*) e->pInterface;
DispClientContext* disp = (DispClientContext*) args->pInterface;
guac_disp->disp = disp;
guac_client_log(client, GUAC_LOG_DEBUG, "Display update channel "
@ -110,19 +110,19 @@ static void guac_rdp_disp_channel_connected(rdpContext* context,
* @param context
* The rdpContext associated with the active RDP session.
*
* @param e
* @param args
* Event-specific arguments, mainly the name of the channel, and a
* reference to the associated plugin loaded for that channel by FreeRDP.
*/
static void guac_rdp_disp_channel_disconnected(rdpContext* context,
ChannelDisconnectedEventArgs* e) {
ChannelDisconnectedEventArgs* args) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
guac_rdp_disp* guac_disp = rdp_client->disp;
/* Ignore disconnection event if it's not for the Display Update channel */
if (strcmp(e->name, DISP_DVC_CHANNEL_NAME) != 0)
if (strcmp(args->name, DISP_DVC_CHANNEL_NAME) != 0)
return;
/* Channel is no longer connected */

8
src/protocols/rdp/channels/rail.c
View File

@ -230,22 +230,22 @@ static UINT guac_rdp_rail_handshake_ex(RailClientContext* rail,
* @param context
* The rdpContext associated with the active RDP session.
*
* @param e
* @param args
* Event-specific arguments, mainly the name of the channel, and a
* reference to the associated plugin loaded for that channel by FreeRDP.
*/
static void guac_rdp_rail_channel_connected(rdpContext* context,
ChannelConnectedEventArgs* e) {
ChannelConnectedEventArgs* args) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
/* Ignore connection event if it's not for the RAIL channel */
if (strcmp(e->name, RAIL_SVC_CHANNEL_NAME) != 0)
if (strcmp(args->name, RAIL_SVC_CHANNEL_NAME) != 0)
return;
/* The structure pointed to by pInterface is guaranteed to be a
* RailClientContext if the channel is RAIL */
RailClientContext* rail = (RailClientContext*) e->pInterface;
RailClientContext* rail = (RailClientContext*) args->pInterface;
/* Init FreeRDP RAIL context, ensuring the guac_client can be accessed from
* within any RAIL-specific callbacks */

14
src/protocols/rdp/channels/rdpei.c
View File

@ -66,23 +66,23 @@ void guac_rdp_rdpei_free(guac_rdp_rdpei* rdpei) {
* @param context
* The rdpContext associated with the active RDP session.
*
* @param e
* @param args
* Event-specific arguments, mainly the name of the channel, and a
* reference to the associated plugin loaded for that channel by FreeRDP.
*/
static void guac_rdp_rdpei_channel_connected(rdpContext* context,
ChannelConnectedEventArgs* e) {
ChannelConnectedEventArgs* args) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
guac_rdp_rdpei* guac_rdpei = rdp_client->rdpei;
/* Ignore connection event if it's not for the RDPEI channel */
if (strcmp(e->name, RDPEI_DVC_CHANNEL_NAME) != 0)
if (strcmp(args->name, RDPEI_DVC_CHANNEL_NAME) != 0)
return;
/* Store reference to the RDPEI plugin once it's connected */
RdpeiClientContext* rdpei = (RdpeiClientContext*) e->pInterface;
RdpeiClientContext* rdpei = (RdpeiClientContext*) args->pInterface;
guac_rdpei->rdpei = rdpei;
/* Declare level of multi-touch support */
@ -107,19 +107,19 @@ static void guac_rdp_rdpei_channel_connected(rdpContext* context,
* @param context
* The rdpContext associated with the active RDP session.
*
* @param e
* @param args
* Event-specific arguments, mainly the name of the channel, and a
* reference to the associated plugin loaded for that channel by FreeRDP.
*/
static void guac_rdp_rdpei_channel_disconnected(rdpContext* context,
ChannelDisconnectedEventArgs* e) {
ChannelDisconnectedEventArgs* args) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
guac_rdp_rdpei* guac_rdpei = rdp_client->rdpei;
/* Ignore disconnection event if it's not for the RDPEI channel */
if (strcmp(e->name, RDPEI_DVC_CHANNEL_NAME) != 0)
if (strcmp(args->name, RDPEI_DVC_CHANNEL_NAME) != 0)
return;
/* Channel is no longer connected */

122
src/protocols/rdp/channels/rdpgfx.c Normal file
View File

@ -0,0 +1,122 @@
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#include "channels/rdpgfx.h"
#include "plugins/channels.h"
#include "rdp.h"
#include "settings.h"
#include <freerdp/client/rdpgfx.h>
#include <freerdp/freerdp.h>
#include <freerdp/gdi/gfx.h>
#include <freerdp/event.h>
#include <guacamole/client.h>
#include <stdlib.h>
#include <string.h>
/**
* Callback which associates handlers specific to Guacamole with the
* RdpgfxClientContext instance allocated by FreeRDP to deal with received
* RDPGFX (Graphics Pipeline) messages.
*
* This function is called whenever a channel connects via the PubSub event
* system within FreeRDP, but only has any effect if the connected channel is
* the RDPGFX channel. This specific callback is registered with the
* PubSub system of the relevant rdpContext when guac_rdp_rdpgfx_load_plugin() is
* called.
*
* @param context
* The rdpContext associated with the active RDP session.
*
* @param args
* Event-specific arguments, mainly the name of the channel, and a
* reference to the associated plugin loaded for that channel by FreeRDP.
*/
static void guac_rdp_rdpgfx_channel_connected(rdpContext* context,
ChannelConnectedEventArgs* args) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
/* Ignore connection event if it's not for the RDPGFX channel */
if (strcmp(args->name, RDPGFX_DVC_CHANNEL_NAME) != 0)
return;
/* Init GDI-backed support for the Graphics Pipeline */
RdpgfxClientContext* rdpgfx = (RdpgfxClientContext*) args->pInterface;
rdpGdi* gdi = context->gdi;
if (!gdi_graphics_pipeline_init(gdi, rdpgfx))
guac_client_log(client, GUAC_LOG_WARNING, "Rendering backend for RDPGFX "
"channel could not be loaded. Graphics may not render at all!");
else
guac_client_log(client, GUAC_LOG_DEBUG, "RDPGFX channel will be used for "
"the RDP Graphics Pipeline Extension.");
}
/**
* Callback which handles any RDPGFX cleanup specific to Guacamole.
*
* This function is called whenever a channel disconnects via the PubSub event
* system within FreeRDP, but only has any effect if the disconnected channel
* is the RDPGFX channel. This specific callback is registered with the PubSub
* system of the relevant rdpContext when guac_rdp_rdpgfx_load_plugin() is
* called.
*
* @param context
* The rdpContext associated with the active RDP session.
*
* @param args
* Event-specific arguments, mainly the name of the channel, and a
* reference to the associated plugin loaded for that channel by FreeRDP.
*/
static void guac_rdp_rdpgfx_channel_disconnected(rdpContext* context,
ChannelDisconnectedEventArgs* args) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
/* Ignore disconnection event if it's not for the RDPGFX channel */
if (strcmp(args->name, RDPGFX_DVC_CHANNEL_NAME) != 0)
return;
/* Un-init GDI-backed support for the Graphics Pipeline */
RdpgfxClientContext* rdpgfx = (RdpgfxClientContext*) args->pInterface;
rdpGdi* gdi = context->gdi;
gdi_graphics_pipeline_uninit(gdi, rdpgfx);
guac_client_log(client, GUAC_LOG_DEBUG, "RDPGFX channel support unloaded.");
}
void guac_rdp_rdpgfx_load_plugin(rdpContext* context) {
/* Subscribe to and handle channel connected events */
PubSub_SubscribeChannelConnected(context->pubSub,
(pChannelConnectedEventHandler) guac_rdp_rdpgfx_channel_connected);
/* Subscribe to and handle channel disconnected events */
PubSub_SubscribeChannelDisconnected(context->pubSub,
(pChannelDisconnectedEventHandler) guac_rdp_rdpgfx_channel_disconnected);
/* Add "rdpgfx" channel */
guac_freerdp_dynamic_channel_collection_add(context->settings, "rdpgfx", NULL);
}

49
src/protocols/rdp/channels/rdpgfx.h Normal file
View File

@ -0,0 +1,49 @@
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#ifndef GUAC_RDP_CHANNELS_RDPGFX_H
#define GUAC_RDP_CHANNELS_RDPGFX_H
#include "settings.h"
#include <freerdp/client/rdpgfx.h>
#include <freerdp/freerdp.h>
#include <guacamole/client.h>
/**
* Adds FreeRDP's "rdpgfx" plugin to the list of dynamic virtual channel plugins
* to be loaded by FreeRDP's "drdynvc" plugin. The context of the plugin will
* automatically be assicated with the guac_rdp_rdpgfx instance pointed to by the
* current guac_rdp_client. The plugin will only be loaded once the "drdynvc"
* plugin is loaded. The "rdpgfx" plugin ultimately adds support for the RDP
* Graphics Pipeline Extension.
*
* If failures occur, messages noting the specifics of those failures will be
* logged.
*
* This MUST be called within the PreConnect callback of the freerdp instance
* for Graphics Pipeline support to be loaded.
*
* @param context
* The rdpContext associated with the active RDP session.
*/
void guac_rdp_rdpgfx_load_plugin(rdpContext* context);
#endif

109
src/protocols/rdp/gdi.c
View File

@ -26,6 +26,7 @@
#include <cairo/cairo.h>
#include <freerdp/freerdp.h>
#include <freerdp/gdi/gdi.h>
#include <freerdp/graphics.h>
#include <freerdp/primary.h>
#include <guacamole/client.h>
@ -371,11 +372,112 @@ BOOL guac_rdp_gdi_set_bounds(rdpContext* context, const rdpBounds* bounds) {
}
BOOL guac_rdp_gdi_end_paint(rdpContext* context) {
/* IGNORE */
void guac_rdp_gdi_mark_frame(rdpContext* context, int starting) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
/* The server supports defining explicit frames */
rdp_client->frames_supported = 1;
/* A new frame is beginning */
if (starting) {
rdp_client->in_frame = 1;
return;
}
/* The current frame has ended */
guac_timestamp frame_end = guac_timestamp_current();
int time_elapsed = frame_end - client->last_sent_timestamp;
rdp_client->in_frame = 0;
/* 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->frames_received = 0;
}
}
BOOL guac_rdp_gdi_frame_marker(rdpContext* context, const FRAME_MARKER_ORDER* frame_marker) {
guac_rdp_gdi_mark_frame(context, frame_marker->action == FRAME_START);
return TRUE;
}
BOOL guac_rdp_gdi_surface_frame_marker(rdpContext* context, const SURFACE_FRAME_MARKER* surface_frame_marker) {
guac_rdp_gdi_mark_frame(context, surface_frame_marker->frameAction == SURFACECMD_FRAMEACTION_END);
if (context->settings->FrameAcknowledge > 0)
IFCALL(context->update->SurfaceFrameAcknowledge, context,
surface_frame_marker->frameId);
return TRUE;
}
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;
/* Leverage BeginPaint handler to detect start of frame for RDPGFX channel */
if (rdp_client->settings->enable_gfx && rdp_client->frames_supported)
guac_rdp_gdi_mark_frame(context, 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;
/* Ignore EndPaint handler unless needed to detect end of frame for RDPGFX
* channel */
if (!rdp_client->settings->enable_gfx)
return TRUE;
/* Ignore paint if GDI output is suppressed */
if (gdi->suppressOutput)
return TRUE;
/* Ignore paint if nothing has been done (empty rect) */
if (gdi->primary->hdc->hwnd->invalid->null)
return TRUE;
INT32 x = gdi->primary->hdc->hwnd->invalid->x;
INT32 y = gdi->primary->hdc->hwnd->invalid->y;
UINT32 w = gdi->primary->hdc->hwnd->invalid->w;
UINT32 h = gdi->primary->hdc->hwnd->invalid->h;
/* Create surface from image data */
cairo_surface_t* surface = cairo_image_surface_create_for_data(
gdi->primary_buffer + 4*x + y*gdi->stride,
CAIRO_FORMAT_RGB24, w, h, gdi->stride);
/* Send surface to buffer */
guac_common_surface_draw(rdp_client->display->default_surface, x, y, surface);
/* Free surface */
cairo_surface_destroy(surface);
/* Next frame */
if (gdi->inGfxFrame) {
guac_rdp_gdi_mark_frame(context, 0);
}
return TRUE;
}
BOOL guac_rdp_gdi_desktop_resize(rdpContext* context) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
@ -391,7 +493,8 @@ BOOL guac_rdp_gdi_desktop_resize(rdpContext* context) {
guac_rdp_get_width(context->instance),
guac_rdp_get_height(context->instance));
return TRUE;
return gdi_resize(context->gdi, guac_rdp_get_width(context->instance),
guac_rdp_get_height(context->instance));
}

64
src/protocols/rdp/gdi.h
View File

@ -156,8 +156,68 @@ 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.
* Notifies the internal GDI implementation that a frame is either starting or
* ending. If the frame is ending and the connected client is ready to receive
* a new frame, a new frame will be flushed to the client.
*
* @param context
* The rdpContext associated with the current RDP session.
*
* @param starting
* Non-zero if the frame in question is starting, zero if the frame is
* ending.
*/
void guac_rdp_gdi_mark_frame(rdpContext* context, int starting);
/**
* Handler called when a frame boundary is received from the RDP server in the
* form of a frame marker command. Each frame boundary may be the beginning or
* the end of a frame.
*
* @param context
* The rdpContext associated with the current RDP session.
*
* @param frame_marker
* The received frame marker.
*
* @return
* TRUE if successful, FALSE otherwise.
*/
BOOL guac_rdp_gdi_frame_marker(rdpContext* context, const FRAME_MARKER_ORDER* frame_marker);
/**
* Handler called when a frame boundary is received from the RDP server in the
* form of a surface frame marker. Each frame boundary may be the beginning or
* the end of a frame.
*
* @param context
* The rdpContext associated with the current RDP session.
*
* @param surface_frame_marker
* The received frame marker.
*
* @return
* TRUE if successful, FALSE otherwise.
*/
BOOL guac_rdp_gdi_surface_frame_marker(rdpContext* context, const SURFACE_FRAME_MARKER* surface_frame_marker);
/**
* 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 has started.
*
* @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.

34
src/protocols/rdp/pointer.c
View File

@ -21,6 +21,7 @@
#include "common/cursor.h"
#include "common/display.h"
#include "common/surface.h"
#include "gdi.h"
#include "pointer.h"
#include "rdp.h"
@ -78,11 +79,22 @@ BOOL guac_rdp_pointer_set(rdpContext* context, const rdpPointer* pointer) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
/* Add explicit frame boundaries around cursor set operation if not already
* in a frame (the RDP protocol does not send nor expect frame boundaries
* for cursor changes, but Guacamole does expect this) */
int in_frame = rdp_client->in_frame;
if (rdp_client->frames_supported && !in_frame)
guac_rdp_gdi_mark_frame(context, 1);
/* Set cursor */
guac_common_cursor_set_surface(rdp_client->display->cursor,
pointer->xPos, pointer->yPos,
((guac_rdp_pointer*) pointer)->layer->surface);
if (rdp_client->frames_supported && !in_frame)
guac_rdp_gdi_mark_frame(context, 0);
return TRUE;
}
@ -106,9 +118,20 @@ BOOL guac_rdp_pointer_set_null(rdpContext* context) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
/* Add explicit frame boundaries around cursor set operation if not already
* in a frame (the RDP protocol does not send nor expect frame boundaries
* for cursor changes, but Guacamole does expect this) */
int in_frame = rdp_client->in_frame;
if (rdp_client->frames_supported && !in_frame)
guac_rdp_gdi_mark_frame(context, 1);
/* Set cursor to empty/blank graphic */
guac_common_cursor_set_blank(rdp_client->display->cursor);
if (rdp_client->frames_supported && !in_frame)
guac_rdp_gdi_mark_frame(context, 0);
return TRUE;
}
@ -118,9 +141,20 @@ BOOL guac_rdp_pointer_set_default(rdpContext* context) {
guac_client* client = ((rdp_freerdp_context*) context)->client;
guac_rdp_client* rdp_client = (guac_rdp_client*) client->data;
/* Add explicit frame boundaries around cursor set operation if not already
* in a frame (the RDP protocol does not send nor expect frame boundaries
* for cursor changes, but Guacamole does expect this) */
int in_frame = rdp_client->in_frame;
if (rdp_client->frames_supported && !in_frame)
guac_rdp_gdi_mark_frame(context, 1);
/* Set cursor to embedded pointer */
guac_common_cursor_set_pointer(rdp_client->display->cursor);
if (rdp_client->frames_supported && !in_frame)
guac_rdp_gdi_mark_frame(context, 0);
return TRUE;
}

50
src/protocols/rdp/rdp.c
View File

@ -28,6 +28,7 @@
#include "channels/rail.h"
#include "channels/rdpdr/rdpdr.h"
#include "channels/rdpei.h"
#include "channels/rdpgfx.h"
#include "channels/rdpsnd/rdpsnd.h"
#include "client.h"
#include "color.h"
@ -137,15 +138,6 @@ BOOL rdp_freerdp_pre_connect(freerdp* instance) {
}
/* Load plugin providing Dynamic Virtual Channel support, if required */
if (instance->settings->SupportDynamicChannels &&
guac_freerdp_channels_load_plugin(context, "drdynvc",
instance->settings)) {
guac_client_log(client, GUAC_LOG_WARNING,
"Failed to load drdynvc plugin. Display update and audio "
"input support will be disabled.");
}
/* Init FreeRDP internal GDI implementation */
if (!gdi_init(instance, guac_rdp_get_native_pixel_format(FALSE)))
return FALSE;
@ -187,9 +179,13 @@ 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;
instance->update->SurfaceFrameMarker = guac_rdp_gdi_surface_frame_marker;
instance->update->altsec->FrameMarker = guac_rdp_gdi_frame_marker;
rdpPrimaryUpdate* primary = instance->update->primary;
primary->DstBlt = guac_rdp_gdi_dstblt;
primary->PatBlt = guac_rdp_gdi_patblt;
@ -204,6 +200,19 @@ BOOL rdp_freerdp_pre_connect(freerdp* instance) {
offscreen_cache_register_callbacks(instance->update);
palette_cache_register_callbacks(instance->update);
/* Load "rdpgfx" plugin for Graphics Pipeline Extension */
if (settings->enable_gfx)
guac_rdp_rdpgfx_load_plugin(context);
/* Load plugin providing Dynamic Virtual Channel support, if required */
if (instance->settings->SupportDynamicChannels &&
guac_freerdp_channels_load_plugin(context, "drdynvc",
instance->settings)) {
guac_client_log(client, GUAC_LOG_WARNING,
"Failed to load drdynvc plugin. Display update and audio "
"input support will be disabled.");
}
return TRUE;
}
@ -544,7 +553,6 @@ static int guac_rdp_handle_connection(guac_client* client) {
if (wait_result > 0) {
int processing_lag = guac_client_get_processing_lag(client);
guac_timestamp frame_start = guac_timestamp_current();
/* Read server messages until frame is built */
do {
@ -564,7 +572,15 @@ 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 */
guac_timestamp frame_start = client->last_sent_timestamp;
frame_end = guac_timestamp_current();
frame_remaining = frame_start + GUAC_RDP_FRAME_DURATION
- frame_end;
@ -587,12 +603,6 @@ static int guac_rdp_handle_connection(guac_client* client) {
} while (wait_result > 0);
/* Record end of frame, excluding server-side rendering time (we
* assume server-side rendering time will be consistent between any
* two subsequent frames, and that this time should thus be
* excluded from the required wait period of the next frame). */
last_frame_end = frame_start;
}
/* Test whether the RDP server is closing the connection */
@ -607,11 +617,13 @@ 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_supported || 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->frames_received = 0;
}
}

18
src/protocols/rdp/rdp.h
View File

@ -91,6 +91,24 @@ typedef struct guac_rdp_client {
*/
guac_common_surface* current_surface;
/**
* Whether the RDP server supports defining explicit frame boundaries.
*/
int frames_supported;
/**
* 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 current state of the keyboard with respect to the RDP session.
*/

46
src/protocols/rdp/settings.c
View File

@ -80,6 +80,7 @@ const char* GUAC_RDP_CLIENT_ARGS[] = {
"disable-bitmap-caching",
"disable-offscreen-caching",
"disable-glyph-caching",
"disable-gfx",
"preconnection-id",
"preconnection-blob",
"timezone",
@ -371,6 +372,13 @@ enum RDP_ARGS_IDX {
*/
IDX_DISABLE_GLYPH_CACHING,
/**
* "true" if the RDP Graphics Pipeline Extension should not be used, and
* traditional RDP graphics should be used instead, "false" or blank if the
* Graphics Pipeline Extension should be used if available.
*/
IDX_DISABLE_GFX,
/**
* The preconnection ID to send within the preconnection PDU when
* initiating an RDP connection, if any.
@ -908,11 +916,6 @@ guac_rdp_settings* guac_rdp_parse_args(guac_user* user,
GUAC_RDP_CLIENT_ARGS[IDX_DISABLE_GLYPH_CACHING]);
}
/* Session color depth */
settings->color_depth =
guac_user_parse_args_int(user, GUAC_RDP_CLIENT_ARGS, argv,
IDX_COLOR_DEPTH, RDP_DEFAULT_DEPTH);
/* Preconnection ID */
settings->preconnection_id = -1;
if (argv[IDX_PRECONNECTION_ID][0] != '\0') {
@ -1129,6 +1132,16 @@ guac_rdp_settings* guac_rdp_parse_args(guac_user* user,
settings->resize_method = GUAC_RESIZE_NONE;
}
/* RDP Graphics Pipeline enable/disable */
settings->enable_gfx =
!guac_user_parse_args_boolean(user, GUAC_RDP_CLIENT_ARGS, argv,
IDX_DISABLE_GFX, 0);
/* Session color depth */
settings->color_depth =
guac_user_parse_args_int(user, GUAC_RDP_CLIENT_ARGS, argv,
IDX_COLOR_DEPTH, settings->enable_gfx ? RDP_GFX_REQUIRED_DEPTH : RDP_DEFAULT_DEPTH);
/* Multi-touch input enable/disable */
settings->enable_touch =
guac_user_parse_args_boolean(user, GUAC_RDP_CLIENT_ARGS, argv,
@ -1397,6 +1410,29 @@ void guac_rdp_push_settings(guac_client* client,
/* Explicitly set flag value */
rdp_settings->PerformanceFlags = guac_rdp_get_performance_flags(guac_settings);
/* Always request frame markers */
rdp_settings->FrameMarkerCommandEnabled = TRUE;
rdp_settings->SurfaceFrameMarkerEnabled = TRUE;
/* Enable RemoteFX / Graphics Pipeline */
if (guac_settings->enable_gfx) {
rdp_settings->SupportGraphicsPipeline = TRUE;
rdp_settings->RemoteFxCodec = TRUE;
if (rdp_settings->ColorDepth != RDP_GFX_REQUIRED_DEPTH) {
guac_client_log(client, GUAC_LOG_WARNING, "Ignoring requested "
"color depth of %i bpp, as the RDP Graphics Pipeline "
"requires %i bpp.", rdp_settings->ColorDepth, RDP_GFX_REQUIRED_DEPTH);
}
/* Required for RemoteFX / Graphics Pipeline */
rdp_settings->FastPathOutput = TRUE;
rdp_settings->ColorDepth = RDP_GFX_REQUIRED_DEPTH;
rdp_settings->SoftwareGdi = TRUE;
}
/* Set individual flags - some FreeRDP versions overwrite the above */
rdp_settings->AllowFontSmoothing = guac_settings->font_smoothing_enabled;
rdp_settings->DisableWallpaper = !guac_settings->wallpaper_enabled;

10
src/protocols/rdp/settings.h
View File

@ -58,6 +58,11 @@
*/
#define RDP_DEFAULT_DEPTH 16
/**
* The color depth required by the RDPGFX channel, in bits.
*/
#define RDP_GFX_REQUIRED_DEPTH 32
/**
* The filename to use for the screen recording, if not specified.
*/
@ -552,6 +557,11 @@ typedef struct guac_rdp_settings {
*/
int enable_audio_input;
/**
* Whether the RDP Graphics Pipeline Extension is enabled.
*/
int enable_gfx;
/**
* Whether multi-touch support is enabled.
*/