1 files changed, 60 insertions, 0 deletions
diff --git a/libgamma_internal_allocated_any_ramp.c b/libgamma_internal_allocated_any_ramp.c
new file mode 100644
index 0000000..7e6953d
--- /dev/null
+++ b/libgamma_internal_allocated_any_ramp.c
@@ -0,0 +1,60 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+
+/**
+ * Just an arbitrary version
+ */
+#define ANY bits64
+
+/**
+ * Concatenation of all ramps
+ */
+#define ALL red
+
+
+/**
+ * Allocate and initalise a gamma ramp with any depth
+ * 
+ * @param   ramps_sys  Output gamma ramps
+ * @param   ramps      The gamma ramps whose sizes should be duplicated
+ * @param   depth      The depth of the gamma ramps to allocate,
+ *                     `-1` for `float`, `-2` for `double`
+ * @param   elements   Output reference for the grand size of the gamma ramps
+ * @return             Zero on success, otherwise (negative) the value of an
+ *                     error identifier provided by this library
+ */
+int
+libgamma_internal_allocated_any_ramp(gamma_ramps_any_t *restrict ramps_sys, gamma_ramps_any_t ramps,
+                                     signed depth, size_t *restrict elements)
+{
+	/* Calculate the size of the allocation to do */
+	size_t d, n = ramps.ANY.red_size + ramps.ANY.green_size + ramps.ANY.blue_size;
+	switch (depth) {
+	case  8:  d = sizeof(uint8_t);   break;
+	case 16:  d = sizeof(uint16_t);  break;
+	case 32:  d = sizeof(uint32_t);  break;
+	case 64:  d = sizeof(uint64_t);  break;
+	case -1:  d = sizeof(float);     break;
+	case -2:  d = sizeof(double);    break;
+	default:
+		return errno = EINVAL, LIBGAMMA_ERRNO_SET;
+	}
+
+	/* Copy the gamma ramp sizes */
+	ramps_sys->ANY = ramps.ANY;
+	/* Allocate the new ramps */
+#ifdef HAVE_LIBGAMMA_METHOD_LINUX_DRM
+	/* Valgrind complains about us reading uninitialize memory if we just use malloc */
+	ramps_sys->ANY.red = calloc(n, d);
+#else
+	ramps_sys->ANY.red = malloc(n * d);
+#endif
+	ramps_sys->ANY.green = (void *)&((char *)ramps_sys->ANY.  red)[ramps.ANY.  red_size * d / sizeof(char)];
+	ramps_sys->ANY.blue  = (void *)&((char *)ramps_sys->ANY.green)[ramps.ANY.green_size * d / sizeof(char)];
+
+	/* Report the total gamma ramp size */
+	*elements = n;
+	/* Report successfulness */
+	return ramps_sys->ANY.red ? 0 : LIBGAMMA_ERRNO_SET;
+}