Load output info and current gamma ramps, also restore gamma ramps on exit

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 118 insertions, 0 deletions

diff --git a/src/output.h b/src/output.h
new file mode 100644
index 0000000..b84ea22
--- /dev/null
+++ b/src/output.h
@@ -0,0 +1,118 @@
+/**
+ * gammad -- Cooperative gamma server
+ * Copyright (C) 2016  Mattias Andrée (maandree@kth.se)
+ * 
+ * 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/>.
+ */
+#include <stddef.h>
+
+#include <libgamma.h>
+
+
+/**
+ * Gamma ramps union for all
+ * lbigamma gamma ramps types
+ */
+union gamma_ramps
+{
+  /**
+   * Ramps with 8-bit value
+   */
+  libgamma_gamma_ramps8_t u8;
+  
+  /**
+   * Ramps with 16-bit value
+   */
+  libgamma_gamma_ramps16_t u16;
+  
+  /**
+   * Ramps with 32-bit value
+   */
+  libgamma_gamma_ramps32_t u32;
+  
+  /**
+   * Ramps with 64-bit value
+   */
+  libgamma_gamma_ramps64_t u64;
+  
+  /**
+   * Ramps with `float` value
+   */
+  libgamma_gamma_rampsf_t f;
+  
+  /**
+   * Ramps with `double` value
+   */
+  libgamma_gamma_rampsd_t d;
+};
+
+
+/**
+ * Information about an output
+ */
+struct output
+{
+  /**
+   * -2: double
+   * -1: float
+   *  8: uint8_t
+   * 16: uint16_t
+   * 32: uint32_t
+   * 64: uint64_t
+   */
+  signed depth;
+  
+  /**
+   * The number of stops in the red gamma ramp
+   */
+  size_t red_size;
+  
+  /**
+   * The number of stops in the red gamma ramp
+   */
+  size_t green_size;
+  
+  /**
+   * The number of stops in the red gamma ramp
+   */
+  size_t blue_size;
+  
+  /**
+   * Whether gamma ramps are supported
+   */
+  enum libgamma_decision supported;
+  
+  /**
+   * The name of the output, will be its EDID
+   * if available, otherwise it will be the
+   * index of the partition, followed by a dot
+   * and the index of the CRTC within the
+   * partition, or if a name for the connector
+   * is available: the index of the partition
+   * followed by a dot and the name of the
+   * connector
+   */
+  char* name;
+  
+  /**
+   * The libgamma state for the output
+   */
+  libgamma_crtc_state_t* crtc;
+  
+  /**
+   * Saved gamma ramps
+   */
+  union gamma_ramps saved_ramps;
+};
+