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-rw-r--r--Makefile.am1
-rw-r--r--test/test_pcm_all.hxx12
-rw-r--r--test/test_pcm_main.cxx5
-rw-r--r--test/test_pcm_mix.cxx84
-rw-r--r--test/test_pcm_util.hxx17
5 files changed, 119 insertions, 0 deletions
diff --git a/Makefile.am b/Makefile.am
index 840fc8163..de818855e 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1407,6 +1407,7 @@ test_test_pcm_SOURCES = \
test/test_pcm_channels.cxx \
test/test_pcm_format.cxx \
test/test_pcm_volume.cxx \
+ test/test_pcm_mix.cxx \
test/test_pcm_all.hxx \
test/test_pcm_main.cxx
test_test_pcm_LDADD = \
diff --git a/test/test_pcm_all.hxx b/test/test_pcm_all.hxx
index 7159b4651..18202454b 100644
--- a/test/test_pcm_all.hxx
+++ b/test/test_pcm_all.hxx
@@ -65,4 +65,16 @@ test_pcm_format_16_to_32();
void
test_pcm_format_float();
+void
+test_pcm_mix_8();
+
+void
+test_pcm_mix_16();
+
+void
+test_pcm_mix_24();
+
+void
+test_pcm_mix_32();
+
#endif
diff --git a/test/test_pcm_main.cxx b/test/test_pcm_main.cxx
index 01cc731bf..a221b26af 100644
--- a/test/test_pcm_main.cxx
+++ b/test/test_pcm_main.cxx
@@ -43,5 +43,10 @@ main(int argc, char **argv)
g_test_add_func("/pcm/format/16_to_32", test_pcm_format_16_to_32);
g_test_add_func("/pcm/format/float", test_pcm_format_float);
+ g_test_add_func("/pcm/mix/8", test_pcm_mix_8);
+ g_test_add_func("/pcm/mix/16", test_pcm_mix_16);
+ g_test_add_func("/pcm/mix/24", test_pcm_mix_24);
+ g_test_add_func("/pcm/mix/32", test_pcm_mix_32);
+
g_test_run();
}
diff --git a/test/test_pcm_mix.cxx b/test/test_pcm_mix.cxx
new file mode 100644
index 000000000..a6e01d20f
--- /dev/null
+++ b/test/test_pcm_mix.cxx
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2003-2013 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "test_pcm_all.hxx"
+#include "test_pcm_util.hxx"
+#include "PcmMix.hxx"
+
+#include <glib.h>
+
+template<typename T, sample_format format, typename G=GlibRandomInt<T>>
+void
+TestPcmMix(G g=G())
+{
+ constexpr unsigned N = 256;
+ const auto src1 = TestDataBuffer<T, N>(g);
+ const auto src2 = TestDataBuffer<T, N>(g);
+
+ /* portion1=1.0: result must be equal to src1 */
+ auto result = src1;
+ bool success = pcm_mix(result.begin(), src2.begin(), sizeof(result),
+ format, 1.0);
+ g_assert(success);
+ AssertEqualWithTolerance(result, src1, 1);
+
+ /* portion1=0.0: result must be equal to src2 */
+ result = src1;
+ success = pcm_mix(result.begin(), src2.begin(), sizeof(result),
+ format, 0.0);
+ g_assert(success);
+ AssertEqualWithTolerance(result, src2, 1);
+
+ /* portion1=0.5 */
+ result = src1;
+ success = pcm_mix(result.begin(), src2.begin(), sizeof(result),
+ format, 0.5);
+ g_assert(success);
+
+ auto expected = src1;
+ for (unsigned i = 0; i < N; ++i)
+ expected[i] = (int64_t(src1[i]) + int64_t(src2[i])) / 2;
+
+ AssertEqualWithTolerance(result, expected, 1);
+}
+
+void
+test_pcm_mix_8()
+{
+ TestPcmMix<int8_t, SAMPLE_FORMAT_S8>();
+}
+
+void
+test_pcm_mix_16()
+{
+ TestPcmMix<int16_t, SAMPLE_FORMAT_S16>();
+}
+
+void
+test_pcm_mix_24()
+{
+ TestPcmMix<int32_t, SAMPLE_FORMAT_S24_P32>(GlibRandomInt24());
+}
+
+void
+test_pcm_mix_32()
+{
+ TestPcmMix<int32_t, SAMPLE_FORMAT_S32>();
+}
diff --git a/test/test_pcm_util.hxx b/test/test_pcm_util.hxx
index c039d6560..84ba074fd 100644
--- a/test/test_pcm_util.hxx
+++ b/test/test_pcm_util.hxx
@@ -51,6 +51,7 @@ template<typename T, size_t N>
class TestDataBuffer : std::array<T, N> {
public:
using typename std::array<T, N>::const_pointer;
+ using std::array<T, N>::size;
using std::array<T, N>::begin;
using std::array<T, N>::end;
using std::array<T, N>::operator[];
@@ -66,3 +67,19 @@ public:
return begin();
}
};
+
+template<typename T>
+bool
+AssertEqualWithTolerance(const T &a, const T &b, unsigned tolerance)
+{
+ g_assert_cmpint(a.size(), ==, b.size());
+
+ for (unsigned i = 0; i < a.size(); ++i) {
+ int64_t x = a[i], y = b[i];
+
+ g_assert_cmpint(x, >=, y - int64_t(tolerance));
+ g_assert_cmpint(x, <=, y + int64_t(tolerance));
+ }
+
+ return true;
+}