When reconnecting, reapply the ramps

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

1 files changed, 51 insertions, 0 deletions

diff --git a/src/util.c b/src/util.c
index c116998..3e2bdd2 100644
--- a/src/util.c
+++ b/src/util.c
@@ -17,6 +17,8 @@
  */
 #include "util.h"
 
+#include <libclut.h>
+
 #include <sys/stat.h>
 #include <errno.h>
 #include <stdlib.h>
@@ -265,3 +267,52 @@ int verify_utf8(const char* restrict string, int allow_modified_nul)
   return read_bytes == 0 ? 0 : -1;
 }
 
+
+/**
+ * Make identity mapping ramps
+ * 
+ * @param   ramps   Output parameter for the ramps
+ * @param   output  The output for which the ramps shall be configured
+ * @return          Zero on success, -1 on error
+ */
+int make_plain_ramps(union gamma_ramps* restrict ramps, struct output* restrict output)
+{
+  COPY_RAMP_SIZES(&(ramps->u8), output);
+  switch (output->depth)
+    {
+    case 8:
+      if (libgamma_gamma_ramps8_initialise(&(ramps->u8)))
+	return -1;
+      libclut_start_over(&(ramps->u8), UINT8_MAX, uint8_t, 1, 1, 1);
+      break;
+    case 16:
+      if (libgamma_gamma_ramps16_initialise(&(ramps->u16)))
+	return -1;
+      libclut_start_over(&(ramps->u16), UINT16_MAX, uint16_t, 1, 1, 1);
+      break;
+    case 32:
+      if (libgamma_gamma_ramps32_initialise(&(ramps->u32)))
+	return -1;
+      libclut_start_over(&(ramps->u32), UINT32_MAX, uint32_t, 1, 1, 1);
+      break;
+    case 64:
+      if (libgamma_gamma_ramps64_initialise(&(ramps->u64)))
+	return -1;
+      libclut_start_over(&(ramps->u64), UINT64_MAX, uint64_t, 1, 1, 1);
+      break;
+    case -1:
+      if (libgamma_gamma_rampsf_initialise(&(ramps->f)))
+	return -1;
+      libclut_start_over(&(ramps->f), 1.0f, float, 1, 1, 1);
+      break;
+    case -2:
+      if (libgamma_gamma_rampsd_initialise(&(ramps->d)))
+	return -1;
+      libclut_start_over(&(ramps->d), (double)1, double, 1, 1, 1);
+      break;
+    default:
+      abort();
+    }
+  return 0;
+}
+