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/*
* nvidia-settings: A tool for configuring the NVIDIA X driver on Unix
* and Linux systems.
*
* Copyright (C) 2004,2012 NVIDIA Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses>.
*/
#include "NvCtrlAttributes.h"
#include "NvCtrlAttributesPrivate.h"
#include "common-utils.h"
#include "msg.h"
#include <X11/extensions/xf86vmode.h>
#include <stdlib.h>
#include <string.h>
NvCtrlVidModeAttributes *
NvCtrlInitVidModeAttributes(NvCtrlAttributePrivateHandle *h)
{
NvCtrlVidModeAttributes *vm = NULL;
int event, error, size, permissions = 0;
Bool ret;
/* Check parameters */
if (!h || !h->dpy || h->target_type != NV_CTRL_TARGET_TYPE_X_SCREEN) {
goto failed;
}
ret = XF86VidModeQueryExtension(h->dpy, &event, &error);
if (!ret) goto failed;
vm = nvalloc(sizeof(NvCtrlVidModeAttributes));
ret = XF86VidModeQueryVersion(h->dpy, &(vm->major_version), &(vm->minor_version));
if (!ret) goto failed;
if (vm->major_version < VM_MINMAJOR ||
(vm->major_version == VM_MINMAJOR && vm->minor_version < VM_MINMINOR)) {
nv_warning_msg("The version of the XF86VidMode extension present "
"on this display (%d.%d) does not support updating "
"gamma ramps. If you'd like to be able to adjust "
"gamma ramps, please update your X server such that "
"the version of the XF86VidMode extension is %d.%d "
"or higher.", vm->major_version, vm->minor_version,
VM_MINMAJOR, VM_MINMINOR);
goto failed;
}
ret = XF86VidModeGetPermissions(h->dpy, h->target_id, &permissions);
if (!ret) {
goto failed;
}
if (((permissions & XF86VM_READ_PERMISSION) == 0) ||
((permissions & XF86VM_WRITE_PERMISSION) == 0)) {
goto failed;
}
ret = XF86VidModeGetGammaRampSize(h->dpy, h->target_id, &size);
if (!ret) goto failed;
vm->lut[RED_CHANNEL_INDEX] = nvalloc(sizeof(unsigned short) * size);
vm->lut[GREEN_CHANNEL_INDEX] = nvalloc(sizeof(unsigned short) * size);
vm->lut[BLUE_CHANNEL_INDEX] = nvalloc(sizeof(unsigned short) * size);
vm->gammaRampSize = size;
ret = XF86VidModeGetGammaRamp(h->dpy, h->target_id, size,
vm->lut[RED_CHANNEL_INDEX],
vm->lut[GREEN_CHANNEL_INDEX],
vm->lut[BLUE_CHANNEL_INDEX]);
if (!ret) goto failed;
NvCtrlInitGammaInputStruct(&vm->gammaInput);
return vm;
failed:
if (vm) {
free(vm->lut[RED_CHANNEL_INDEX]);
free(vm->lut[GREEN_CHANNEL_INDEX]);
free(vm->lut[BLUE_CHANNEL_INDEX]);
free(vm);
}
return NULL;
} /* NvCtrlInitVidModeAttributes() */
ReturnStatus NvCtrlVidModeGetColorAttributes(NvCtrlAttributePrivateHandle *h,
float contrast[3],
float brightness[3],
float gamma[3])
{
int i;
if (!h->vm) return NvCtrlMissingExtension;
for (i = FIRST_COLOR_CHANNEL; i <= LAST_COLOR_CHANNEL; i++) {
contrast[i] = h->vm->gammaInput.contrast[i];
brightness[i] = h->vm->gammaInput.brightness[i];
gamma[i] = h->vm->gammaInput.gamma[i];
}
return NvCtrlSuccess;
} /* NvCtrlGetColorAttributes() */
/*
* NvCtrlSetColorAttributes() - update the color attributes specified
* by bitmask, recompute the LUT, and send the LUT to the X server.
*
* The bitmask parameter is a bitmask of which channels (RED_CHANNEL,
* GREEN_CHANNEL, and BLUE_CHANNEL) and which values (CONTRAST_VALUE,
* BRIGHTNESS_VALUE, GAMMA_VALUE) should be updated.
*
* XXX future optimization: if each channel has the same c/b/g values,
* don't need to compute the ramp separately per channel.
*
* XXX future optimization: if the input is the same as what we
* already have, we don't actually need to recompute the ramp and send
* it to the X server.
*/
ReturnStatus NvCtrlVidModeSetColorAttributes(NvCtrlAttributePrivateHandle *h,
float c[3],
float b[3],
float g[3],
unsigned int bitmask)
{
Bool ret;
if (!h || !h->dpy || h->target_type != NV_CTRL_TARGET_TYPE_X_SCREEN) {
return NvCtrlBadHandle;
}
if (!h->vm) {
return NvCtrlMissingExtension;
}
NvCtrlAssignGammaInput(&h->vm->gammaInput, c, b, g, bitmask);
NvCtrlUpdateGammaRamp(&h->vm->gammaInput,
h->vm->gammaRampSize,
h->vm->lut,
bitmask);
ret = XF86VidModeSetGammaRamp(h->dpy, h->target_id, h->vm->gammaRampSize,
h->vm->lut[RED_CHANNEL_INDEX],
h->vm->lut[GREEN_CHANNEL_INDEX],
h->vm->lut[BLUE_CHANNEL_INDEX]);
return ret ? NvCtrlSuccess : NvCtrlError;
}
ReturnStatus NvCtrlVidModeGetColorRamp(NvCtrlAttributePrivateHandle *h,
unsigned int channel,
unsigned short **lut,
int *n)
{
if (!h || !h->dpy || h->target_type != NV_CTRL_TARGET_TYPE_X_SCREEN) {
return NvCtrlBadHandle;
}
if (!h->vm) {
return NvCtrlMissingExtension;
}
*n = h->vm->gammaRampSize;
switch (channel) {
case RED_CHANNEL: *lut = h->vm->lut[RED_CHANNEL_INDEX]; break;
case GREEN_CHANNEL: *lut = h->vm->lut[GREEN_CHANNEL_INDEX]; break;
case BLUE_CHANNEL: *lut = h->vm->lut[BLUE_CHANNEL_INDEX]; break;
default: return NvCtrlBadArgument;
}
return NvCtrlSuccess;
}
/*
* Get XF86 Video Mode String Attribute Values
*/
ReturnStatus
NvCtrlVidModeGetStringAttribute (NvCtrlAttributePrivateHandle *h,
unsigned int display_mask,
int attr, char **ptr)
{
/* Validate */
if ( !h || !h->dpy || h->target_type != NV_CTRL_TARGET_TYPE_X_SCREEN ) {
return NvCtrlBadHandle;
}
if ( !h->vm) {
return NvCtrlMissingExtension;
}
/* Get Video Mode major & minor versions */
if (attr == NV_CTRL_STRING_XF86VIDMODE_VERSION) {
char str[16];
sprintf(str, "%d.%d", h->vm->major_version, h->vm->minor_version);
*ptr = strdup(str);
return NvCtrlSuccess;
}
return NvCtrlNoAttribute;
} /* NvCtrlVidModeGetStringAttribute() */
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