InitialHEADmaster

1 files changed, 51 insertions, 0 deletions

diff --git a/lib/resample_s16func.cpp b/lib/resample_s16func.cpp
new file mode 100644
index 0000000..07c086e
--- /dev/null
+++ b/lib/resample_s16func.cpp
@@ -0,0 +1,51 @@
+/* Copyright 2012 Dietrich Epp <depp@zdome.net> */
+#include "defs.h"
+#include "filter.h"
+#include "resample.h"
+#include "resample_func.h"
+
+namespace {
+  template<auto func>
+  void helper(lfr_fixed_t* pos, lfr_fixed_t inv_ratio, unsigned* dither, void* out, int outlen, const void* in, int inlen, const lfr_filter* filter)
+  {
+    return func(*pos, inv_ratio, *dither, out, outlen, in, inlen, *filter);
+  }
+}
+
+lfr_resample_func_t
+lfr_resample_s16func(int nchan, const struct lfr_filter *filter)
+{
+    const auto ftype = filter->type;
+    switch (nchan) {
+    case 1:
+        switch (ftype) {
+        case LFR_FTYPE_S16:
+          return helper<lfr_resample<short, short, short, int, 1, 14>>;
+
+        case LFR_FTYPE_F32:
+          return helper<lfr_resample<short, short, short, int, 1, 14>>;
+
+        default:
+            break;
+        }
+        break;
+
+    case 2:
+        switch (ftype) {
+        case LFR_FTYPE_S16:
+          return helper<lfr_resample<short, short, short, int, 2, 14>>;
+
+        case LFR_FTYPE_F32:
+          return helper<lfr_resample<short, short, float, float, 2, 14>>;
+
+        default:
+            break;
+        }
+        break;
+
+    default:
+        break;
+    }
+
+    return NULL;
+}