Add a smoke test for input-only streams.

This only checks we have non-silence audio for 500ms.

.gitignore

@@ -53,6 +53,8 @@ test/test_devices
 test/test_devices.exe
 test/test_resampler
 test/test_resampler.exe
+test/test_record
+test/test_record.exe
 test/test_utils
 test/test_utils.exe
 include/cubeb/cubeb-stdint.h

Makefile.am

@@ -82,6 +82,7 @@ check_PROGRAMS = test/test_sanity \
 								 test/test_devices \
 								 test/test_duplex \
 								 test/test_resampler \
+								 test/test_record \
 								 test/test_utils \
 								 $(NULL)
 
@@ -106,6 +107,9 @@ test_test_resampler_LDADD = -lm src/libcubeb.la $(platform_lib) src/cubeb_resamp
 test_test_duplex_SOURCES = test/test_duplex.cpp
 test_test_duplex_LDADD = -lm src/libcubeb.la $(platform_lib)
 
+test_test_record_SOURCES = test/test_record.cpp
+test_test_record_LDADD = -lm src/libcubeb.la $(platform_lib)
+
 test_test_resampler_SOURCES = test/test_utils.cpp
 
 TESTS = $(check_PROGRAMS)

test/test_record.cpp

@@ -0,0 +1,129 @@
+/*
+ * Copyright © 2016 Mozilla Foundation
+ *
+ * This program is made available under an ISC-style license.  See the
+ * accompanying file LICENSE for details.
+ */
+
+/* libcubeb api/function test. Record the mic and check there is sound. */
+#ifdef NDEBUG
+#undef NDEBUG
+#endif
+#define _XOPEN_SOURCE 500
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <assert.h>
+
+#include "../include/cubeb/cubeb.h"
+#include "common.h"
+#ifdef CUBEB_GECKO_BUILD
+#include "TestHarness.h"
+#endif
+
+#define SAMPLE_FREQUENCY 48000
+#if (defined(_WIN32) || defined(__WIN32__))
+#define STREAM_FORMAT CUBEB_SAMPLE_FLOAT32LE
+#else
+#define STREAM_FORMAT CUBEB_SAMPLE_S16LE
+#endif
+
+struct user_state
+{
+  bool seen_noise;
+};
+
+long data_cb(cubeb_stream *stream, void *user, const void * inputbuffer, void *outputbuffer, long nframes)
+{
+  user_state * u = reinterpret_cast<user_state*>(user);
+#if STREAM_FORMAT != CUBEB_SAMPLE_FLOAT32LE
+  short *b = (short *)inputbuffer;
+#else
+  float *b = (float *)inputbuffer;
+#endif
+
+  if (stream == NULL  || inputbuffer == NULL || outputbuffer != NULL) {
+    return CUBEB_ERROR;
+  }
+
+  bool seen_noise = false;
+  for (long i = 0; i < nframes; i++) {
+    if (b[i] != 0.0) {
+      seen_noise = true;
+    }
+  }
+
+  u->seen_noise |= seen_noise;
+
+  return nframes;
+}
+
+void state_cb(cubeb_stream *stream, void *user, cubeb_state state)
+{
+  if (stream == NULL)
+    return;
+
+  switch (state) {
+  case CUBEB_STATE_STARTED:
+    printf("stream started\n"); break;
+  case CUBEB_STATE_STOPPED:
+    printf("stream stopped\n"); break;
+  case CUBEB_STATE_DRAINED:
+    printf("stream drained\n"); break;
+  default:
+    printf("unknown stream state %d\n", state);
+  }
+
+  return;
+}
+
+int main(int argc, char *argv[])
+{
+#ifdef CUBEB_GECKO_BUILD
+  ScopedXPCOM xpcom("test_record");
+#endif
+
+  cubeb *ctx;
+  cubeb_stream *stream;
+  cubeb_stream_params params;
+  int r;
+  cubeb_device_collection * collection;
+  user_state stream_state = { false };
+
+  r = cubeb_init(&ctx, "Cubeb record example");
+  if (r != CUBEB_OK) {
+    fprintf(stderr, "Error initializing cubeb library\n");
+    return r;
+  }
+
+  r = cubeb_enumerate_devices(ctx, CUBEB_DEVICE_TYPE_INPUT, &collection);
+
+  if (r != CUBEB_OK) {
+	  fprintf(stderr, "Error getting the device collection\n");
+	  return r;
+  }
+
+  params.format = STREAM_FORMAT;
+  params.rate = SAMPLE_FREQUENCY;
+  params.channels = 1;
+  assert(collection->count >= 3);
+  params.devid = collection->device[5]->devid;
+
+  r = cubeb_stream_init(ctx, &stream, "Cubeb record (mono)", NULL, &params, NULL, nullptr,
+                        250, data_cb, state_cb, &stream_state);
+  if (r != CUBEB_OK) {
+    fprintf(stderr, "Error initializing cubeb stream\n");
+    return r;
+  }
+
+  cubeb_stream_start(stream);
+  delay(500);
+  cubeb_stream_stop(stream);
+
+  cubeb_stream_destroy(stream);
+  cubeb_destroy(ctx);
+
+  assert(stream_state.seen_noise);
+
+  return CUBEB_OK;
+}