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authorMattias Andrée <maandree@operamail.com>2014-09-04 09:25:01 +0200
committerMattias Andrée <maandree@operamail.com>2014-09-04 09:25:01 +0200
commit8c72d071d453f95ba5fba8e2a35bd332ae6ec453 (patch)
tree6e944b88c03bc498458c8820bf9ff22229d7211d /src/libgamma/CRTC.java
parentadd behex and unhex (diff)
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add states
Signed-off-by: Mattias Andrée <maandree@operamail.com>
Diffstat (limited to 'src/libgamma/CRTC.java')
-rw-r--r--src/libgamma/CRTC.java135
1 files changed, 135 insertions, 0 deletions
diff --git a/src/libgamma/CRTC.java b/src/libgamma/CRTC.java
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+/**
+ * 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 state.
+ *
+ * The CRTC controls the gamma ramps for the
+ * monitor that is plugged in to the connector
+ * that the CRTC belongs to.
+ */
+public class CRTC
+{
+ /**
+ * Constructor.
+ *
+ * @param partition The partition this CRTC belongs to.
+ * @param crtc The index of the CRTC within its partition.
+ */
+ public CRTC(Partition partition, int crtc) throws LibgammaException
+ {
+ this.partition = partition;
+ this.crtc = crtc;
+ long[] r = libgamma_crtc_create(partition.address, crtc);
+ this.address = r[0];
+ if (r[1] != 0)
+ throw new LibgammaException((int)(r[1]));
+ }
+
+
+ /**
+ * The partition this CRTC belongs to.
+ */
+ public final Partition partition;
+
+ /**
+ * The index of the CRTC within its partition.
+ */
+ public final int crtc;
+
+ /**
+ * The address of the native object.
+ */
+ final long address;
+
+
+ /**
+ * Release resources.
+ */
+ public void close()
+ {
+ libgamma_crtc_free(this.address);
+ }
+
+ /**
+ * Restore the gamma ramps for the CRTC to the system settings.
+ */
+ public void restore() throws LibgammaException
+ {
+ int r = libgamma_crtc_restore(this.address);
+ if (r != 0)
+ throw new LibgammaException(r);
+ }
+
+ /**
+ * Read information about the CRTC.
+ *
+ * @param fields OR:ed identifiers for the information about the CRTC that should be read.
+ * @return Information about the CRTC.
+ */
+ public CRTCInformation get_information(int fields)
+ {
+ Object[] r = libgamma_get_crtc_information(this.address, fields);
+ byte[] edid = (byte[])(r[0]);
+ String connector_name = (String)(r[1]);
+ float[] gamma = (float[])(r[2]);
+ int[] ints = (int[])(r[3]);
+ return new CRTCInformation(edid, connector_name, gamma, ints);
+ }
+
+
+
+ /**
+ * Create a CRTC state.
+ *
+ * @param partition The partition state for the partition that the CRTC belongs to.
+ * @param crtc The index of the CRTC within the partition.
+ * @return Element 0: The value for {@link #address}.
+ * Element 1: Error code, zero on success.
+ */
+ private static native long[] libgamma_crtc_create(long partition, int crtc);
+
+ /**
+ * Release all resources held by a CRTC state
+ * and free the CRTC state pointer.
+ *
+ * @param address The CRTC state.
+ */
+ private static native void libgamma_crtc_free(long address);
+
+ /**
+ * Restore the gamma ramps for a CRTC to the system settings for that CRTC.
+ *
+ * @param address The CRTC state.
+ * @return Zero on success, and error code on failure.
+ */
+ private static native int libgamma_crtc_restore(long address);
+
+ /**
+ * Read information about a CRTC.
+ *
+ * @param crtc The state of the CRTC whose information should be read.
+ * @param fields OR:ed identifiers for the information about the CRTC that should be read.
+ * @return Input parameters for the constructor of {@link CRTCInformation}
+ */
+ private static native Object[] libgamma_get_crtc_information(long crtc, int fields);
+
+}
+