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matt
360
unix/xserver/hw/vnc/RandrGlue.c
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360
unix/xserver/hw/vnc/RandrGlue.c
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/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
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* Copyright 2011-2015 Pierre Ossman for Cendio AB
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <assert.h>
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#include <string.h>
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#include "scrnintstr.h"
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#include "randrstr.h"
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#include "RandrGlue.h"
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#include "XorgGlue.h"
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static int scrIdx;
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void vncSetGlueContext(int screenIndex);
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void vncSetGlueContext(int screenIndex)
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{
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scrIdx = screenIndex;
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}
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int vncGetScreenWidth(void)
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{
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return screenInfo.screens[scrIdx]->width;
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}
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int vncGetScreenHeight(void)
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{
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return screenInfo.screens[scrIdx]->height;
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}
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int vncRandRIsValidScreenSize(int width, int height)
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{
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rrScrPrivPtr rp = rrGetScrPriv(screenInfo.screens[scrIdx]);
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if (width < rp->minWidth || rp->maxWidth < width)
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return 0;
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if (height < rp->minHeight || rp->maxHeight < height)
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return 0;
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return 1;
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}
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int vncRandRResizeScreen(int width, int height)
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{
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ScreenPtr pScreen = screenInfo.screens[scrIdx];
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/* Try to retain DPI when we resize */
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return RRScreenSizeSet(pScreen, width, height,
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pScreen->mmWidth * width / pScreen->width,
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pScreen->mmHeight * height / pScreen->height);
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}
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void vncRandRUpdateSetTime(void)
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{
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rrScrPrivPtr rp = rrGetScrPriv(screenInfo.screens[scrIdx]);
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rp->lastSetTime = currentTime;
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}
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int vncRandRHasOutputClones(void)
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{
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rrScrPrivPtr rp = rrGetScrPriv(screenInfo.screens[scrIdx]);
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for (int i = 0;i < rp->numCrtcs;i++) {
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if (rp->crtcs[i]->numOutputs > 1)
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return 1;
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}
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return 0;
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}
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int vncRandRGetOutputCount(void)
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{
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rrScrPrivPtr rp = rrGetScrPriv(screenInfo.screens[scrIdx]);
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return rp->numOutputs;
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}
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int vncRandRGetAvailableOutputs(void)
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{
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rrScrPrivPtr rp = rrGetScrPriv(screenInfo.screens[scrIdx]);
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int availableOutputs;
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RRCrtcPtr *usedCrtcs;
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int numUsed;
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int i, j, k;
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usedCrtcs = malloc(sizeof(RRCrtcPtr) * rp->numCrtcs);
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if (usedCrtcs == NULL)
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return 0;
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/*
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* This gets slightly complicated because we might need to hook a CRTC
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* up to the output, but also check that we don't try to use the same
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* CRTC for multiple outputs.
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*/
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availableOutputs = 0;
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numUsed = 0;
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for (i = 0;i < rp->numOutputs;i++) {
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RROutputPtr output;
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output = rp->outputs[i];
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if (output->crtc != NULL)
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availableOutputs++;
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else {
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for (j = 0;j < output->numCrtcs;j++) {
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if (output->crtcs[j]->numOutputs != 0)
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continue;
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for (k = 0;k < numUsed;k++) {
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if (usedCrtcs[k] == output->crtcs[j])
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break;
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}
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if (k != numUsed)
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continue;
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availableOutputs++;
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usedCrtcs[numUsed] = output->crtcs[j];
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numUsed++;
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break;
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}
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}
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}
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free(usedCrtcs);
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return availableOutputs;
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}
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char *vncRandRGetOutputName(int outputIdx)
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{
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rrScrPrivPtr rp = rrGetScrPriv(screenInfo.screens[scrIdx]);
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return strdup(rp->outputs[outputIdx]->name);
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}
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int vncRandRIsOutputEnabled(int outputIdx)
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{
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rrScrPrivPtr rp = rrGetScrPriv(screenInfo.screens[scrIdx]);
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if (rp->outputs[outputIdx]->crtc == NULL)
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return 0;
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if (rp->outputs[outputIdx]->crtc->mode == NULL)
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return 0;
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return 1;
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}
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int vncRandRIsOutputUsable(int outputIdx)
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{
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rrScrPrivPtr rp = rrGetScrPriv(screenInfo.screens[scrIdx]);
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RROutputPtr output;
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int i;
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output = rp->outputs[outputIdx];
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if (output->crtc != NULL)
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return 1;
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/* Any unused CRTCs? */
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for (i = 0;i < output->numCrtcs;i++) {
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if (output->crtcs[i]->numOutputs == 0)
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return 1;
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}
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return 0;
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}
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int vncRandRIsOutputConnected(int outputIdx)
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{
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rrScrPrivPtr rp = rrGetScrPriv(screenInfo.screens[scrIdx]);
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RROutputPtr output;
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output = rp->outputs[outputIdx];
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return (output->connection == RR_Connected);
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}
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static RRModePtr vncRandRGetMatchingMode(int outputIdx, int width, int height)
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{
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rrScrPrivPtr rp = rrGetScrPriv(screenInfo.screens[scrIdx]);
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RROutputPtr output;
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output = rp->outputs[outputIdx];
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if (output->crtc != NULL) {
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unsigned int swap;
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switch (output->crtc->rotation) {
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case RR_Rotate_90:
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case RR_Rotate_270:
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swap = width;
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width = height;
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height = swap;
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break;
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}
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}
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for (int i = 0; i < output->numModes; i++) {
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if ((output->modes[i]->mode.width == width) &&
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(output->modes[i]->mode.height == height))
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return output->modes[i];
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}
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return NULL;
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}
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int vncRandRCheckOutputMode(int outputIdx, int width, int height)
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{
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if (vncRandRGetMatchingMode(outputIdx, width, height) != NULL)
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return 1;
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if (vncRandRCanCreateModes())
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return 1;
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return 0;
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}
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int vncRandRDisableOutput(int outputIdx)
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{
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rrScrPrivPtr rp = rrGetScrPriv(screenInfo.screens[scrIdx]);
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RRCrtcPtr crtc;
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int i;
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RROutputPtr *outputs;
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int numOutputs = 0;
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RRModePtr mode;
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int ret;
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crtc = rp->outputs[outputIdx]->crtc;
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if (crtc == NULL)
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return 1;
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/* Remove this output from the CRTC configuration */
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outputs = malloc(crtc->numOutputs * sizeof(RROutputPtr));
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if (!outputs) {
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return 0;
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}
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for (i = 0; i < crtc->numOutputs; i++) {
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if (rp->outputs[outputIdx] != crtc->outputs[i]) {
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outputs[numOutputs++] = crtc->outputs[i];
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}
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}
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if (numOutputs == 0) {
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mode = NULL;
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} else {
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mode = crtc->mode;
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}
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ret = RRCrtcSet(crtc, mode, crtc->x, crtc->y, crtc->rotation, numOutputs, outputs);
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free(outputs);
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return ret;
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}
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unsigned int vncRandRGetOutputId(int outputIdx)
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{
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rrScrPrivPtr rp = rrGetScrPriv(screenInfo.screens[scrIdx]);
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return rp->outputs[outputIdx]->id;
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}
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int vncRandRGetOutputDimensions(int outputIdx,
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int *x, int *y, int *width, int *height)
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{
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rrScrPrivPtr rp = rrGetScrPriv(screenInfo.screens[scrIdx]);
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RRCrtcPtr crtc;
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int swap;
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*x = *y = *width = *height = 0;
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crtc = rp->outputs[outputIdx]->crtc;
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if (crtc == NULL || !crtc->mode)
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return 1;
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*x = crtc->x;
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*y = crtc->y;
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*width = crtc->mode->mode.width;
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*height = crtc->mode->mode.height;
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switch (crtc->rotation & 0xf) {
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case RR_Rotate_90:
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case RR_Rotate_270:
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swap = *width;
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*width = *height;
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*height = swap;
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break;
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}
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return 0;
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}
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int vncRandRReconfigureOutput(int outputIdx, int x, int y,
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int width, int height)
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{
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rrScrPrivPtr rp = rrGetScrPriv(screenInfo.screens[scrIdx]);
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RROutputPtr output;
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RRCrtcPtr crtc;
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RRModePtr mode;
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int i;
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output = rp->outputs[outputIdx];
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crtc = output->crtc;
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/* Need a CRTC? */
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if (crtc == NULL) {
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for (i = 0;i < output->numCrtcs;i++) {
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if (output->crtcs[i]->numOutputs != 0)
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continue;
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crtc = output->crtcs[i];
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break;
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}
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/* Couldn't find one... */
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if (crtc == NULL)
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return 0;
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}
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/* Make sure we have the mode we want */
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mode = vncRandRGetMatchingMode(outputIdx, width, height);
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if (mode == NULL) {
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mode = vncRandRCreateMode(output, width, height);
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if (mode == NULL)
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return 0;
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}
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mode = vncRandRSetPreferredMode(output, mode);
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if (mode == NULL)
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return 0;
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/* Reconfigure new mode and position */
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return RRCrtcSet(crtc, mode, x, y, crtc->rotation, 1, &output);
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}
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int vncRandRCanCreateOutputs(int extraOutputs)
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{
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return vncRandRCanCreateScreenOutputs(scrIdx, extraOutputs);
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}
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int vncRandRCreateOutputs(int extraOutputs)
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{
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return vncRandRCreateScreenOutputs(scrIdx, extraOutputs);
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}
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