GUAC-936: Use initial resolution for all future resizing of display. Suggest reasonable resolution only if resolution of display is not provided/forced.
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6ea36b5a27
@ -43,6 +43,7 @@ libguac_client_rdp_la_SOURCES = \
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rdp_settings.c \
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rdp_stream.c \
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rdp_svc.c \
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resolution.c \
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unicode.c
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guacsvc_sources = \
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@ -95,6 +96,7 @@ noinst_HEADERS = \
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rdp_status.h \
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rdp_stream.h \
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rdp_svc.h \
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resolution.h \
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unicode.h
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# Add compatibility layer for WinPR if not available
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@ -33,6 +33,7 @@
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#include "rdp_pointer.h"
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#include "rdp_stream.h"
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#include "rdp_svc.h"
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#include "resolution.h"
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#ifdef HAVE_FREERDP_DISPLAY_UPDATE_SUPPORT
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#include "rdp_disp.h"
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@ -509,56 +510,6 @@ void __guac_rdp_client_load_keymap(guac_client* client,
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}
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/**
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* Reduces the resolution of the client to the given resolution in DPI if
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* doing so is reasonable. This function returns non-zero if the resolution
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* was successfully reduced to the given DPI, and zero if reduction failed.
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*/
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static int __guac_rdp_reduce_resolution(guac_client* client, int resolution) {
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int width = client->info.optimal_width * resolution / client->info.optimal_resolution;
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int height = client->info.optimal_height * resolution / client->info.optimal_resolution;
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/* Reduced resolution if result is reasonably sized */
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if (width*height >= GUAC_RDP_REASONABLE_AREA) {
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client->info.optimal_width = width;
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client->info.optimal_height = height;
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client->info.optimal_resolution = resolution;
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guac_client_log(client, GUAC_LOG_INFO,
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"Reducing resolution to %i DPI (%ix%i)", resolution, width, height);
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return 1;
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}
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/* No reduction performed */
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return 0;
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}
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/**
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* Forces the client resolution to the given value, without checking whether
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* the resulting width and height are reasonable.
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*/
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static void __guac_rdp_force_resolution(guac_client* client, int resolution) {
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int width = client->info.optimal_width * resolution / client->info.optimal_resolution;
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int height = client->info.optimal_height * resolution / client->info.optimal_resolution;
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/* Do not force DPI to zero */
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if (resolution == 0) {
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guac_client_log(client, GUAC_LOG_WARNING,
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"Cowardly refusing to force resolution to %i DPI", resolution);
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return;
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}
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/* Reduced resolution if result is reasonably sized */
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client->info.optimal_width = width;
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client->info.optimal_height = height;
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client->info.optimal_resolution = resolution;
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guac_client_log(client, GUAC_LOG_INFO,
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"Resolution forced to %i DPI (%ix%i)", resolution, width, height);
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}
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int guac_client_init(guac_client* client, int argc, char** argv) {
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rdp_guac_client_data* guac_client_data;
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@ -648,23 +599,22 @@ int guac_client_init(guac_client* client, int argc, char** argv) {
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if (argv[IDX_PORT][0] != '\0')
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settings->port = atoi(argv[IDX_PORT]);
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guac_client_log(client, GUAC_LOG_INFO, "Client resolution is %ix%i at %i DPI",
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guac_client_log(client, GUAC_LOG_DEBUG,
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"Client resolution is %ix%i at %i DPI",
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client->info.optimal_width,
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client->info.optimal_height,
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client->info.optimal_resolution);
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/* Use optimal resolution unless overridden */
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/* Use suggested resolution unless overridden */
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settings->resolution = guac_rdp_suggest_resolution(client);
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if (argv[IDX_DPI][0] != '\0')
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__guac_rdp_force_resolution(client, atoi(argv[IDX_DPI]));
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/* If resolution not forced, attempt to reduce resolution for high DPI */
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else if (client->info.optimal_resolution > GUAC_RDP_NATIVE_RESOLUTION
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&& !__guac_rdp_reduce_resolution(client, GUAC_RDP_NATIVE_RESOLUTION)
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&& !__guac_rdp_reduce_resolution(client, GUAC_RDP_HIGH_RESOLUTION))
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guac_client_log(client, GUAC_LOG_INFO, "No reasonable lower resolution");
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settings->resolution = atoi(argv[IDX_DPI]);
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/* Use optimal width unless overridden */
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settings->width = client->info.optimal_width;
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settings->width = client->info.optimal_width
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* settings->resolution
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/ client->info.optimal_resolution;
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if (argv[IDX_WIDTH][0] != '\0')
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settings->width = atoi(argv[IDX_WIDTH]);
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@ -680,7 +630,10 @@ int guac_client_init(guac_client* client, int argc, char** argv) {
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settings->width = settings->width & ~0x3;
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/* Use optimal height unless overridden */
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settings->height = client->info.optimal_height;
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settings->height = client->info.optimal_height
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* settings->resolution
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/ client->info.optimal_resolution;
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if (argv[IDX_HEIGHT][0] != '\0')
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settings->height = atoi(argv[IDX_HEIGHT]);
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@ -692,6 +645,12 @@ int guac_client_init(guac_client* client, int argc, char** argv) {
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argv[IDX_WIDTH], settings->height);
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}
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guac_client_log(client, GUAC_LOG_DEBUG,
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"Using resolution of %ix%i at %i DPI",
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settings->width,
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settings->height,
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settings->resolution);
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/* Domain */
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settings->domain = NULL;
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if (argv[IDX_DOMAIN][0] != '\0')
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@ -480,6 +480,13 @@ int rdp_guac_client_size_handler(guac_client* client, int width, int height) {
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freerdp* rdp_inst = guac_client_data->rdp_inst;
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/* Convert client pixels to remote pixels */
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width = width * guac_client_data->settings.resolution
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/ client->info.optimal_resolution;
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height = height * guac_client_data->settings.resolution
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/ client->info.optimal_resolution;
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/* Send display update */
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pthread_mutex_lock(&(guac_client_data->rdp_lock));
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guac_rdp_disp_set_size(guac_client_data->disp, rdp_inst->context,
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@ -122,6 +122,12 @@ typedef struct guac_rdp_settings {
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*/
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int height;
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/**
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* The DPI of the remote display to assume when converting between
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* client pixels and remote pixels.
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*/
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int resolution;
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/**
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* Whether audio is enabled.
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*/
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60
src/protocols/rdp/resolution.c
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60
src/protocols/rdp/resolution.c
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@ -0,0 +1,60 @@
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/*
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* Copyright (C) 2014 Glyptodon LLC
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "client.h"
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#include "resolution.h"
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#include <guacamole/client.h>
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int guac_rdp_resolution_reasonable(guac_client* client, int resolution) {
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int width = client->info.optimal_width;
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int height = client->info.optimal_height;
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/* Convert client pixels to remote pixels */
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width = width * resolution / client->info.optimal_resolution;
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height = height * resolution / client->info.optimal_resolution;
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/*
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* Resolution is reasonable if the same as the client optimal resolution
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* OR if the resulting display area is reasonable
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*/
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return client->info.optimal_resolution == resolution
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|| width*height >= GUAC_RDP_REASONABLE_AREA;
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}
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int guac_rdp_suggest_resolution(guac_client* client) {
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/* Prefer RDP's native resolution */
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if (guac_rdp_resolution_reasonable(client, GUAC_RDP_NATIVE_RESOLUTION))
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return GUAC_RDP_NATIVE_RESOLUTION;
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/* If native resolution is too tiny, try higher resolution */
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if (guac_rdp_resolution_reasonable(client, GUAC_RDP_HIGH_RESOLUTION))
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return GUAC_RDP_HIGH_RESOLUTION;
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/* Fallback to client-suggested resolution */
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return client->info.optimal_resolution;
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}
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49
src/protocols/rdp/resolution.h
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49
src/protocols/rdp/resolution.h
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@ -0,0 +1,49 @@
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/*
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* Copyright (C) 2014 Glyptodon LLC
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef GUAC_RDP_RESOLUTION_H
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#define GUAC_RDP_RESOLUTION_H
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#include <guacamole/client.h>
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/**
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* Returns whether the given resolution is reasonable for the given client,
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* based on arbitrary criteria for reasonability.
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*
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* @param client The guac_client to test the given resolution against.
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* @param resolution The resolution to test, in DPI.
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* @return Non-zero if the resolution is reasonable, zero otherwise.
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*/
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int guac_rdp_resolution_reasonable(guac_client* client, int resolution);
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/**
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* Returns a reasonable resolution for the remote display, given the size and
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* resolution of a guac_client.
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*
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* @param client The guac_client whose size and resolution shall be used to
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* determine an appropriate remote display resolution.
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* @return A reasonable resolution for the remote display, in DPI.
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*/
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int guac_rdp_suggest_resolution(guac_client* client);
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#endif
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