150 lines
3.3 KiB
C
150 lines
3.3 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* X11 RemoteFX Encoder
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*
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* Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <sys/select.h>
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#include <sys/signal.h>
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#include <winpr/crt.h>
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#include "xf_encode.h"
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XImage* xf_snapshot(xfPeerContext* xfp, int x, int y, int width, int height)
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{
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XImage* image;
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xfInfo* xfi = xfp->info;
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if (xfi->use_xshm)
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{
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XCopyArea(xfi->display, xfi->root_window, xfi->fb_pixmap, xfi->xdamage_gc, x, y, width, height, x, y);
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image = xfi->fb_image;
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}
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else
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{
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image = XGetImage(xfi->display, xfi->root_window, x, y, width, height, AllPlanes, ZPixmap);
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}
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return image;
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}
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void xf_xdamage_subtract_region(xfPeerContext* xfp, int x, int y, int width, int height)
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{
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XRectangle region;
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xfInfo* xfi = xfp->info;
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region.x = x;
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region.y = y;
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region.width = width;
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region.height = height;
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#ifdef WITH_XFIXES
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XFixesSetRegion(xfi->display, xfi->xdamage_region, ®ion, 1);
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XDamageSubtract(xfi->display, xfi->xdamage, xfi->xdamage_region, None);
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#endif
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}
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int xf_update_encode(freerdp_peer* client, int x, int y, int width, int height)
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{
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wStream* s;
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BYTE* data;
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xfInfo* xfi;
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RFX_RECT rect;
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XImage* image;
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rdpUpdate* update;
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xfPeerContext* xfp;
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SURFACE_BITS_COMMAND* cmd;
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update = client->update;
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xfp = (xfPeerContext*) client->context;
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cmd = &update->surface_bits_command;
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xfi = xfp->info;
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if (width * height <= 0)
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{
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cmd->bitmapDataLength = 0;
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return -1;
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}
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s = xfp->s;
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Stream_Clear(s);
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Stream_SetPosition(s, 0);
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if (xfi->use_xshm)
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{
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/**
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* Passing an offset source rectangle to rfx_compose_message()
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* leads to protocol errors, so offset the data pointer instead.
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*/
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rect.x = 0;
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rect.y = 0;
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rect.width = width;
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rect.height = height;
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image = xf_snapshot(xfp, x, y, width, height);
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data = (BYTE*) image->data;
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data = &data[(y * image->bytes_per_line) + (x * image->bits_per_pixel / 8)];
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rfx_compose_message(xfp->rfx_context, s, &rect, 1, data,
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width, height, image->bytes_per_line);
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cmd->destLeft = x;
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cmd->destTop = y;
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cmd->destRight = x + width;
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cmd->destBottom = y + height;
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}
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else
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{
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rect.x = 0;
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rect.y = 0;
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rect.width = width;
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rect.height = height;
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image = xf_snapshot(xfp, x, y, width, height);
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data = (BYTE*) image->data;
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rfx_compose_message(xfp->rfx_context, s, &rect, 1, data,
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width, height, image->bytes_per_line);
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cmd->destLeft = x;
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cmd->destTop = y;
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cmd->destRight = x + width;
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cmd->destBottom = y + height;
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XDestroyImage(image);
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}
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cmd->bpp = 32;
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cmd->codecID = client->settings->RemoteFxCodecId;
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cmd->width = width;
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cmd->height = height;
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cmd->bitmapDataLength = Stream_GetPosition(s);
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cmd->bitmapData = Stream_Buffer(s);
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return 0;
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}
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