add test for previous 2 fixes

tests/1-delay-clear.c

@@ -0,0 +1,64 @@
+/* SoX Resampler Library      Copyright (c) 2007-15 robs@users.sourceforge.net
+ * Licence for this file: LGPL v2.1                  See LICENCE for details. */
+
+/* Test 1: exercises soxr_delay and soxr_clear */
+
+#ifdef NDEBUG /* N.B. assert used with active statements so enable always. */
+#undef NDEBUG /* Must undef above assert.h or other that might include it. */
+#endif
+
+#include <soxr.h>
+#include "../examples/examples-common.h"
+
+#define ranqd1(x) ((x) = 1664525 * (x) + 1013904223) /* int32_t x */
+#define franqd1(x) (float)(ranqd1(x) * (1. / (65536. * 32768.))) /* [-1,1) */
+
+#define irate 9600
+#define orate 4410
+
+int main(int argc, char const * arg[])
+{
+  soxr_error_t error;
+  int32_t ran = 0;
+  int j;
+
+  soxr_t soxr = soxr_create(irate, orate, 1, &error, NULL, NULL, NULL);
+  assert(!error);
+
+  for (j=0; j<2; ++j) {
+    float ibuf[irate], out[orate+2], obuf[orate+2], * ibuf1 = ibuf;
+    size_t ilen = AL(ibuf)-1, olen = AL(obuf), i, odone = 0, odone0, odone1=0;
+    soxr_quality_spec_t  q_spec = soxr_quality_spec(SOXR_HQ, 0);
+
+    for (i=0; i<irate; ibuf[i++] = franqd1(ran));
+
+    error = soxr_oneshot(irate, orate, 1, ibuf, ilen, NULL,
+        out, AL(out), &odone0, NULL, &q_spec, NULL);
+    assert(!error);
+    assert(odone0==orate);
+
+    for (i=0; ilen || odone1; ++i) {
+      double out_samples = (double)orate / irate * (double)ilen;
+      double delayed_samples = soxr_delay(soxr);
+      unsigned max_out_samples = (unsigned)(out_samples + delayed_samples + .5);
+      assert(delayed_samples >= 0);
+      fprintf(stderr, "%5u %5u %5u\n",
+          (unsigned)ilen, max_out_samples, (unsigned)odone);
+      assert(max_out_samples+odone==odone0);
+      error = soxr_process(soxr, ibuf1, ilen, NULL, obuf+odone, olen, &odone1);
+      assert(!error);
+      odone += odone1;
+      ibuf1 = NULL, ilen = 0;
+      olen = min(100, AL(obuf)-odone);
+    }
+    assert(odone==odone0);
+
+    for (i=0; i<odone && out[i]==obuf[i]; ++i);
+    assert(i==odone);
+
+    soxr_clear(soxr);
+  }
+  soxr_delete(soxr);
+
+  return 0 * argc * !arg;
+}

tests/CMakeLists.txt

@@ -48,3 +48,5 @@ foreach (b ${test_bits})
 endforeach ()
 
 add_custom_target (test-vectors ALL DEPENDS ${vectors})
+
+add_test (1-delay-clear ${BIN}1-delay-clear)