280 lines
5.8 KiB
C
280 lines
5.8 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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*
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* Copyright 2014 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 "shadow.h"
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#include "shadow_subsystem.h"
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static pfnShadowSubsystemEntry pSubsystemEntry = NULL;
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void shadow_subsystem_set_entry(pfnShadowSubsystemEntry pEntry)
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{
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pSubsystemEntry = pEntry;
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}
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static int shadow_subsystem_load_entry_points(RDP_SHADOW_ENTRY_POINTS* pEntryPoints)
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{
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ZeroMemory(pEntryPoints, sizeof(RDP_SHADOW_ENTRY_POINTS));
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if (!pSubsystemEntry)
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return -1;
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if (pSubsystemEntry(pEntryPoints) < 0)
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return -1;
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return 1;
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}
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rdpShadowSubsystem* shadow_subsystem_new(void)
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{
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RDP_SHADOW_ENTRY_POINTS ep;
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rdpShadowSubsystem* subsystem = NULL;
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shadow_subsystem_load_entry_points(&ep);
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if (!ep.New)
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return NULL;
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subsystem = ep.New();
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if (!subsystem)
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return NULL;
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CopyMemory(&(subsystem->ep), &ep, sizeof(RDP_SHADOW_ENTRY_POINTS));
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return subsystem;
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}
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void shadow_subsystem_free(rdpShadowSubsystem* subsystem)
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{
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if (subsystem && subsystem->ep.Free)
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subsystem->ep.Free(subsystem);
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}
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int shadow_subsystem_init(rdpShadowSubsystem* subsystem, rdpShadowServer* server)
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{
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int status = -1;
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if (!subsystem || !subsystem->ep.Init)
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return -1;
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subsystem->server = server;
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subsystem->selectedMonitor = server->selectedMonitor;
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if (!(subsystem->MsgPipe = MessagePipe_New()))
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goto fail;
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if (!(subsystem->updateEvent = shadow_multiclient_new()))
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goto fail;
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if ((status = subsystem->ep.Init(subsystem)) >= 0)
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return status;
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fail:
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if (subsystem->MsgPipe)
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{
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MessagePipe_Free(subsystem->MsgPipe);
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subsystem->MsgPipe = NULL;
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}
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if (subsystem->updateEvent)
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{
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shadow_multiclient_free(subsystem->updateEvent);
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subsystem->updateEvent = NULL;
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}
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return status;
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}
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static void shadow_subsystem_free_queued_message(void* obj)
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{
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wMessage* message = (wMessage*)obj;
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if (message->Free)
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{
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message->Free(message);
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message->Free = NULL;
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}
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}
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void shadow_subsystem_uninit(rdpShadowSubsystem* subsystem)
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{
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if (!subsystem)
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return;
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if (subsystem->ep.Uninit)
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subsystem->ep.Uninit(subsystem);
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if (subsystem->MsgPipe)
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{
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/* Release resource in messages before free */
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subsystem->MsgPipe->In->object.fnObjectFree = shadow_subsystem_free_queued_message;
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MessageQueue_Clear(subsystem->MsgPipe->In);
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subsystem->MsgPipe->Out->object.fnObjectFree = shadow_subsystem_free_queued_message;
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MessageQueue_Clear(subsystem->MsgPipe->Out);
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MessagePipe_Free(subsystem->MsgPipe);
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subsystem->MsgPipe = NULL;
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}
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if (subsystem->updateEvent)
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{
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shadow_multiclient_free(subsystem->updateEvent);
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subsystem->updateEvent = NULL;
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}
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}
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int shadow_subsystem_start(rdpShadowSubsystem* subsystem)
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{
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int status;
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if (!subsystem || !subsystem->ep.Start)
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return -1;
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status = subsystem->ep.Start(subsystem);
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return status;
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}
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int shadow_subsystem_stop(rdpShadowSubsystem* subsystem)
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{
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int status;
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if (!subsystem || !subsystem->ep.Stop)
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return -1;
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status = subsystem->ep.Stop(subsystem);
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return status;
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}
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UINT32 shadow_enum_monitors(MONITOR_DEF* monitors, UINT32 maxMonitors)
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{
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UINT32 numMonitors = 0;
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RDP_SHADOW_ENTRY_POINTS ep;
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if (shadow_subsystem_load_entry_points(&ep) < 0)
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return -1;
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numMonitors = ep.EnumMonitors(monitors, maxMonitors);
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return numMonitors;
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}
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/**
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* Common function for subsystem implementation.
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* This function convert 32bit ARGB format pixels to xormask data
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* and andmask data and fill into SHADOW_MSG_OUT_POINTER_ALPHA_UPDATE
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* Caller should free the andMaskData and xorMaskData later.
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*/
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int shadow_subsystem_pointer_convert_alpha_pointer_data(
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BYTE* pixels, BOOL premultiplied, UINT32 width, UINT32 height,
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SHADOW_MSG_OUT_POINTER_ALPHA_UPDATE* pointerColor)
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{
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UINT32 x, y;
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BYTE* pSrc8;
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BYTE* pDst8;
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int xorStep;
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int andStep;
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UINT32 andBit;
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BYTE* andBits;
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UINT32 andPixel;
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BYTE A, R, G, B;
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xorStep = (width * 3);
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xorStep += (xorStep % 2);
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andStep = ((width + 7) / 8);
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andStep += (andStep % 2);
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pointerColor->lengthXorMask = height * xorStep;
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pointerColor->xorMaskData = (BYTE*)calloc(1, pointerColor->lengthXorMask);
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if (!pointerColor->xorMaskData)
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return -1;
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pointerColor->lengthAndMask = height * andStep;
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pointerColor->andMaskData = (BYTE*)calloc(1, pointerColor->lengthAndMask);
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if (!pointerColor->andMaskData)
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{
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free(pointerColor->xorMaskData);
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pointerColor->xorMaskData = NULL;
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return -1;
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}
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for (y = 0; y < height; y++)
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{
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pSrc8 = &pixels[(width * 4) * (height - 1 - y)];
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pDst8 = &(pointerColor->xorMaskData[y * xorStep]);
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andBit = 0x80;
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andBits = &(pointerColor->andMaskData[andStep * y]);
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for (x = 0; x < width; x++)
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{
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B = *pSrc8++;
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G = *pSrc8++;
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R = *pSrc8++;
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A = *pSrc8++;
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andPixel = 0;
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if (A < 64)
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A = 0; /* pixel cannot be partially transparent */
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if (!A)
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{
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/* transparent pixel: XOR = black, AND = 1 */
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andPixel = 1;
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B = G = R = 0;
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}
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else
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{
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if (premultiplied)
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{
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B = (B * 0xFF) / A;
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G = (G * 0xFF) / A;
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R = (R * 0xFF) / A;
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}
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}
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*pDst8++ = B;
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*pDst8++ = G;
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*pDst8++ = R;
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if (andPixel)
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*andBits |= andBit;
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if (!(andBit >>= 1))
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{
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andBits++;
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andBit = 0x80;
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}
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}
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}
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return 1;
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}
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void shadow_subsystem_frame_update(rdpShadowSubsystem* subsystem)
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{
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shadow_multiclient_publish_and_wait(subsystem->updateEvent);
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}
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