/**
* jlibgamma — Display server abstraction layer for gamma ramp and Java
* Copyright © 2014 Mattias Andrée (maandree@member.fsf.org)
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library 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 library. If not, see <http://www.gnu.org/licenses/>.
*/
package libgamma;
/**
* Cathode ray tube controller information data structure.
*/
public class CRTCInformation
{
/**
* Type initialiser.
*/
static
{
Libgamma.initialise();
}
/**
* For a {@link CRTCInformation} fill in the values for {@link #edid}
* and {@link #edid_length} and report errors to {@link #edid_error}.
*/
public static final int EDID = 1 << 0;
/**
* For a {@link CRTCInformation} fill in the value for
* {@link #width_mm} and report errors to {@link #width_mm_error}.
*/
public static final int WIDTH_MM = 1 << 1;
/**
* For a {@link CRTCInformation} fill in the value for
* {@link #height_mm} and report errors to {@link #height_mm_error}.
*/
public static final int HEIGHT_MM = 1 << 2;
/**
* For a {@link CRTCInformation} fill in the value for {@link #width_mm_edid}
* and report errors to {@link #width_mm_edid_error}.
*/
public static final int WIDTH_MM_EDID = 1 << 3;
/**
* For a {@link CRTCInformation} fill in the value for
* {@link #height_mm_edid} and report errors to {@link #height_mm_edid_error}.
*/
public static final int HEIGHT_MM_EDID = 1 << 4;
/**
* For a {@link CRTCInformation} fill in the values for
* {@link #red_gamma_size}, {@link #green_gamma_size} and
* {@link #blue_gamma_size}. and report errors to
* {@link #gamma_size_error}.
*/
public static final int GAMMA_SIZE = 1 << 5;
/**
* For a {@link CRTCInformation} fill in the value for
* {@link #gamma_depth} and report errors to {@link #gamma_depth_error}.
*/
public static final int GAMMA_DEPTH = 1 << 6;
/**
* For a {@link CRTCInformation} fill in the value for
* {@link #gamma_support} and report errors to {@link #gamma_support_error}.
*/
public static final int GAMMA_SUPPORT = 1 << 7;
/**
* For a {@link CRTCInformation} fill in the value for
* {@link #subpixel_order} and report errors to {@link #subpixel_order_error}.
*/
public static final int SUBPIXEL_ORDER = 1 << 8;
/**
* For a {@link CRTCInformation} fill in the value for
* {@link #active} and report errors to {@link #active_error}.
*/
public static final int ACTIVE = 1 << 9;
/**
* For a {@link CRTCInformation} fill in the value
* for {@link #connector_name} and report errors to
* {@link #connector_name_error}.
*/
public static final int CONNECTOR_NAME = 1 << 10;
/**
* For a {@link CRTCInformation} fill in the
* value for {@link #connector_type} and report
* errors to {@link #connector_type_error}.
*/
public static final int CONNECTOR_TYPE = 1 << 11;
/**
* For a {@link CRTCInformation} fill in the values for
* {@link #gamma_red}, {@link #gamma_green} and
* {@link #gamma_blue} and report errors to {@link #gamma_error}.
*/
public static final int GAMMA = 1 << 12;
/**
* The number of {@link #*} values defined.
*/
public static final int COUNT = 13;
/**
* Macro for both {@link CRTCInformation} fields
* that can specify the size of the monitor's viewport
* as specified in the monitor's Extended Display
* Information Data.
*/
public static final int MACRO_EDID_VIEWPORT = WIDTH_MM_EDID | HEIGHT_MM_EDID;
/**
* Macro for all {@link CRTCInformation} fields
* that can be filled if the adjustment method have
* support for reading the monitors' Extended Display
* Information Data.
*/
public static final int MACRO_EDID = EDID | MACRO_EDID_VIEWPORT | GAMMA;
/**
* Macro for both {@link CRTCInformation} fields
* that can specify the size of the monitor's viewport
* as provided by the adjustment method without this
* library having to parse the monitor's Extended Display
* Information Data.
*/
public static final int MACRO_VIEWPORT = WIDTH_MM | HEIGHT_MM;
/**
* Macro for the {@link CRTCInformation} fields
* that specifies the CRTC's gamma ramp sizes and gamma
* ramp depth.
*/
public static final int MACRO_RAMP = GAMMA_SIZE | GAMMA_DEPTH;
/**
* Macro for the {@link CRTCInformation} fields
* that specifies the CRTC's connector type and the
* partition unique name of the connector.
*/
public static final int MACRO_CONNECTOR = CONNECTOR_NAME | CONNECTOR_TYPE;
/**
* Macro for the {@link CRTCInformation} fields
* that required there is a monitor attached to
* the connector, and that status itself.
*/
public static final int MACRO_ACTIVE = MACRO_EDID | MACRO_VIEWPORT | SUBPIXEL_ORDER | ACTIVE;
/**
* Constructor.
*
* @param edid The value for {@link edid}.
* @param connector_name The value for {@link connector_name}.
* @param gamma The values for {@link gamma_red},
* {@link gamma_green} and {@link gamma_blue}.
* @param ints Values for the rest of the variables.
*/
public CRTCInformation(byte[] edid, String connector_name, float[] gamma, int[] ints)
{
this.edid = edid;
this.connector_name = connector_name;
this.gamma_red = gamma[0];
this.gamma_green = gamma[1];
this.gamma_blue = gamma[2];
this.edid_error = make_error(ints[0]);
this.width_mm = ints[1];
this.width_mm_error = make_error(ints[2]);
this.height_mm = ints[3];
this.height_mm_error = make_error(ints[4]);
this.width_mm_edid = ints[5];
this.width_mm_edid_error = make_error(ints[6]);
this.height_mm_edid = ints[7];
this.height_mm_edid_error = make_error(ints[8]);
this.red_gamma_size = ints[9];
this.green_gamma_size = ints[10];
this.blue_gamma_size = ints[11];
this.gamma_size_error = make_error(ints[12]);
this.gamma_depth = (short)(ints[13]);
this.gamma_depth_error = make_error(ints[14]);
this.gamma_support = ints[15];
this.gamma_support_error = make_error(ints[16]);
this.subpixel_order = SubpixelOrder.VALUES[ints[17]];
this.subpixel_order_error = make_error(ints[18]);
this.active = ints[19];
this.active_error = make_error(ints[20]);
this.connector_name_error = make_error(ints[21]);
this.connector_type = ConnectorType.VALUES[ints[22]];
this.connector_type_error = make_error(ints[23]);
this.gamma_error = make_error(ints[24]);
this.has_error = (this.edid_error != null)
|| (this.width_mm_error != null)
|| (this.height_mm_error != null)
|| (this.width_mm_edid_error != null)
|| (this.height_mm_edid_error != null)
|| (this.gamma_size_error != null)
|| (this.gamma_depth_error != null)
|| (this.gamma_support_error != null)
|| (this.subpixel_order_error != null)
|| (this.connector_name_error != null)
|| (this.connector_type_error != null);
}
/**
* Create an {@link LibgammaException} from an error code.
*
* @param error_code The error code.
* @return An {@link LibgammaException} for the error,
* {@code null} if <tt>error_code</tt> is zero.
*/
private static LibgammaException make_error(int error_code)
{
if (error_code == 0)
return null;
else
return new LibgammaException(error_code);
}
/**
* The Extended Display Identification Data associated with
* the attached monitor. This is raw byte array that is usually
* 128 bytes long.
*/
public final byte[] edid;
/**
* Error that occurred when fetching the value for
* {@link #edid}, {@code null} on success.
*/
public final LibgammaException edid_error;
/**
* The phyical width, in millimetres, of the viewport of the
* attached monitor, as reported by the adjustment method. This
* value may be incorrect, which is a known issue with the X
* server where it is the result of the X server attempting
* the estimate the size on its own.
* Zero means that its is not applicable, which is the case
* for projectors.
*/
public final int width_mm;
/**
* Error that occurred when fetching the value for
* {@link #width_mm}, {@code null} on success.
*/
public final LibgammaException width_mm_error;
/**
* The phyical height, in millimetres, of the viewport of the
* attached monitor, as reported by the adjustment method. This
* value may be incorrect, which is a known issue with the X
* server where it is the result of the X server attempting
* the estimate the size on its own.
* Zero means that its is not applicable, which is the case
* for projectors.
*/
public final int height_mm;
/**
* Error that occurred when fetching the value for
* {@link #height_mm}, {@code null} on success.
*/
public final LibgammaException height_mm_error;
/**
* The phyical width, in millimetres, of the viewport of the
* attached monitor, as reported by it the monitor's Extended
* Display Information Data. This value can only contain whole
* centimetres, which means that the result is always zero
* modulus ten. However, this could change with revisions of
* the EDID structure.
* Zero means that its is not applicable, which is the case
* for projectors.
*/
public final int width_mm_edid;
/**
* Error that occurred when fetching the value for
* {@link #width_mm_edid}, {@code null} on success.
*/
public final LibgammaException width_mm_edid_error;
/**
* The phyical height, in millimetres, of the viewport of the
* attached monitor, as reported by it the monitor's Extended
* Display Information Data. This value can only contain whole
* centimetres, which means that the result is always zero
* modulus ten. However, this could change with revisions of
* the EDID structure.
* Zero means that its is not applicable, which is the case
* for projectors.
*/
public final int height_mm_edid;
/**
* Error that occurred when fetching the value for
* {@link #height_mm_edid}, {@code null} on success.
*/
public final LibgammaException height_mm_edid_error;
/**
* The size of the encoding axis of the red gamma ramp.
*/
public final int red_gamma_size;
/**
* The size of the encoding axis of the green gamma ramp.
*/
public final int green_gamma_size;
/**
* The size of the encoding axis of the blue gamma ramp.
*/
public final int blue_gamma_size;
/**
* Error that occurred when fetching the values for
* {@link #red_gamma_size}, {@link #green_gamma_size}
* and {@link #blue_gamma_size}, {@code null} on success.
*/
public final LibgammaException gamma_size_error;
/**
* The bit-depth of the value axes of gamma ramps,
* -1 for single precision floating point, and -2 for
* double precision floating point.
*/
public final short gamma_depth;
/**
* Error that occurred when fetching the value for
* {@link #gamma_depth}, {@code null} on success.
*/
public final LibgammaException gamma_depth_error;
/**
* Non-zero gamma ramp adjustments are supported.
*/
public final int gamma_support;
/**
* Error that occurred when fetching the value for
* {@link #gamma_support}, {@code null} on success.
*/
public final LibgammaException gamma_support_error;
/**
* The layout of the subpixels.
* You cannot count on this value --- especially for CRT:s ---
* but it is provided anyway as a means of distinguishing monitors.
*/
public final SubpixelOrder subpixel_order;
/**
* Error that occurred when fetching the value for
* {@link #subpixel_order}, {@code null} on success.
*/
public final LibgammaException subpixel_order_error;
/**
* Whether there is a monitors connected to the CRTC.
*/
public final int active;
/**
* Error that occurred when fetching the value for
* {@link #active}, {@code null} on success.
*/
public final LibgammaException active_error;
/**
* The name of the connector as designated by the display
* server or as give by this library in case the display
* server lacks this feature.
*/
public final String connector_name;
/**
* Error that occurred when fetching the value for
* {@link #connector_name}, {@code null} on success.
*/
public final LibgammaException connector_name_error;
/**
* The type of the connector that is associated with the CRTC.
*/
public final ConnectorType connector_type;
/**
* Error that occurred when fetching the value for
* {@link #connector_type}, {@code null} on success.
*/
public final LibgammaException connector_type_error;
/**
* The gamma characteristics of the monitor as reported
* in its Extended Display Information Data. The value
* holds the value for the red channel. If you do not have
* and more accurate measurement of the gamma for the
* monitor this could be used to give a rought gamma
* correction; simply divide the value with 2.2 and use
* the result for the red channel in the gamma correction.
*/
public final float gamma_red;
/**
* The gamma characteristics of the monitor as reported
* in its Extended Display Information Data. The value
* holds the value for the green channel. If you do not have
* and more accurate measurement of the gamma for the
* monitor this could be used to give a rought gamma
* correction; simply divide the value with 2.2 and use
* the result for the green channel in the gamma correction.
*/
public final float gamma_green;
/**
* The gamma characteristics of the monitor as reported
* in its Extended Display Information Data. The value
* holds the value for the blue channel. If you do not have
* and more accurate measurement of the gamma for the
* monitor this could be used to give a rought gamma
* correction; simply divide the value with 2.2 and use
* the result for the blue channel in the gamma correction.
*/
public final float gamma_blue;
/**
* Error that occurred when fetching the values for
* {@link #red_gamma}, {@link #green_gamma} and
* {@link #blue_gamma}, {@code null} on success.
*/
public final LibgammaException gamma_error;
/**
* Whether any of the error fields are non-{@code null}.
*/
public final boolean has_error;
/**
* Convert a raw representation of an EDID to a lowercase hexadecimal representation.
*
* @param edid The EDID in raw representation.
* @return The EDID in lowercase hexadecimal representation,
*/
public static String behex(byte[] edid)
{
char[] rc = new char[edid.length * 2];
for (int i = 0; i < edid.length; i++)
{ rc[i * 2 + 0] = "0123456789abcdef".charAt((edid[i] >> 4) & 15);
rc[i * 2 + 1] = "0123456789abcdef".charAt((edid[i] >> 0) & 15);
}
return new String(rc);
}
/**
* Convert an hexadecimal representation of an EDID to a raw representation.
*
* @param edid The EDID in hexadecimal representation.
* @return The EDID in raw representation, it will be half the length
* of <tt>edid</tt> (the input value).
*/
public static byte[] unhex(String edid)
{
byte[] rc = new byte[edid.length() / 2];
edid = edid.toLowerCase();
for (int i = 0; i < rc.length; i++)
{ rc[i] = (byte)("0123456789abcdef".indexOf(edid.charAt(i * 2 + 0)) << 4);
rc[i] |= (byte)("0123456789abcdef".indexOf(edid.charAt(i * 2 + 1)) << 0);
}
return rc;
}
}
