+static SNDFILE* ref = 0;
+static int ref_buffer_size = 0;
+static float* ref_buffer = 0;
+
+static void
+audio (boost::shared_ptr<AudioBuffers> audio, int channels)
+{
+ /* Check that we have a big enough buffer */
+ BOOST_CHECK (audio->frames() * audio->channels() < ref_buffer_size);
+
+ int const N = sf_readf_float (ref, ref_buffer, audio->frames());
+ for (int i = 0; i < N; ++i) {
+ switch (channels) {
+ case 1:
+ BOOST_CHECK_EQUAL (ref_buffer[i], audio->data(2)[i]);
+ break;
+ case 2:
+ BOOST_CHECK_EQUAL (ref_buffer[i*2 + 0], audio->data(0)[i]);
+ BOOST_CHECK_EQUAL (ref_buffer[i*2 + 1], audio->data(1)[i]);
+ break;
+ default:
+ BOOST_REQUIRE (false);
+ }
+ }
+}
+