1 files changed, 162 insertions, 0 deletions
diff --git a/test/chmap_sel.c b/test/chmap_sel.c
new file mode 100644
index 0000000000..c315d2f9a1
--- /dev/null
+++ b/test/chmap_sel.c
@@ -0,0 +1,162 @@
+#include "test_helpers.h"
+#include "audio/chmap_sel.h"
+
+static void test_mp_chmap_sel_fallback_upmix(void **state) {
+    struct mp_chmap a;
+    struct mp_chmap b;
+    struct mp_chmap_sel s = {0};
+
+    mp_chmap_from_str(&a, bstr0("7.1"));
+    mp_chmap_from_str(&b, bstr0("5.1"));
+
+    mp_chmap_sel_add_map(&s, &a);
+    assert_true(mp_chmap_sel_fallback(&s, &b));
+    assert_string_equal(mp_chmap_to_str(&b), "7.1");
+}
+
+static void test_mp_chmap_sel_fallback_downmix(void **state) {
+    struct mp_chmap a;
+    struct mp_chmap b;
+    struct mp_chmap_sel s = {0};
+
+    mp_chmap_from_str(&a, bstr0("5.1"));
+    mp_chmap_from_str(&b, bstr0("7.1"));
+
+    mp_chmap_sel_add_map(&s, &a);
+    assert_true(mp_chmap_sel_fallback(&s, &b));
+    assert_string_equal(mp_chmap_to_str(&b), "5.1");
+}
+
+static void test_mp_chmap_sel_fallback_incompatible(void **state) {
+    struct mp_chmap a;
+    struct mp_chmap b;
+    struct mp_chmap_sel s = {0};
+
+    mp_chmap_from_str(&a, bstr0("7.1"));
+    mp_chmap_from_str(&b, bstr0("7.1(wide-side)"));
+
+    mp_chmap_sel_add_map(&s, &a);
+    assert_true(mp_chmap_sel_fallback(&s, &b));
+    assert_string_equal(mp_chmap_to_str(&b), "7.1");
+}
+
+static void test_mp_chmap_sel_fallback_prefer_compatible(void **state) {
+    struct mp_chmap a, b, c;
+    struct mp_chmap_sel s = {0};
+
+    mp_chmap_from_str(&a, bstr0("7.1"));
+    mp_chmap_from_str(&b, bstr0("5.1(side)"));
+    mp_chmap_from_str(&c, bstr0("7.1(wide-side)"));
+
+    mp_chmap_sel_add_map(&s, &a);
+    mp_chmap_sel_add_map(&s, &b);
+
+    assert_true(mp_chmap_sel_fallback(&s, &c));
+    assert_string_equal(mp_chmap_to_str(&b), "5.1(side)");
+}
+
+static void test_mp_chmap_sel_fallback_prefer_closest_upmix(void **state) {
+    struct mp_chmap_sel s = {0};
+
+    char *maps[] = { "7.1", "5.1", "2.1", "stereo", "mono", NULL };
+    for (int i = 0; maps[i]; i++) {
+        struct mp_chmap m;
+        mp_chmap_from_str(&m, bstr0(maps[i]));
+        mp_chmap_sel_add_map(&s, &m);
+    }
+
+    struct mp_chmap c;
+    mp_chmap_from_str(&c, bstr0("3.1"));
+    assert_true(mp_chmap_sel_fallback(&s, &c));
+    assert_string_equal(mp_chmap_to_str(&c), "5.1");
+}
+
+static void test_mp_chmap_sel_fallback_use_replacements(void **state) {
+    struct mp_chmap a;
+    struct mp_chmap b;
+    struct mp_chmap_sel s = {0};
+
+    mp_chmap_from_str(&a, bstr0("7.1(rear)"));
+    mp_chmap_from_str(&b, bstr0("5.1"));
+
+    mp_chmap_sel_add_map(&s, &a);
+    assert_true(mp_chmap_sel_fallback(&s, &b));
+    assert_string_equal(mp_chmap_to_str(&b), "7.1(rear)");
+}
+
+static void test_mp_chmap_sel_fallback_reject_unknown(void **state) {
+    struct mp_chmap a;
+    struct mp_chmap b;
+    struct mp_chmap_sel s = {0};
+
+    a.num = 2;
+    a.speaker[0] = MP_SPEAKER_ID_UNKNOWN0;
+    a.speaker[1] = MP_SPEAKER_ID_UNKNOWN0 + 1;
+
+    mp_chmap_from_str(&b, bstr0("5.1"));
+
+    mp_chmap_sel_add_map(&s, &a);
+    assert_false(mp_chmap_sel_fallback(&s, &b));
+    assert_string_equal(mp_chmap_to_str(&b), "5.1");
+}
+
+static void test_mp_chmap_sel_fallback_works_on_alsa_chmaps(void **state) {
+    struct mp_chmap a;
+    struct mp_chmap b;
+    struct mp_chmap_sel s = {0};
+
+    mp_chmap_from_str(&a, bstr0("7.1(alsa)"));
+    mp_chmap_from_str(&b, bstr0("5.1"));
+
+    mp_chmap_sel_add_map(&s, &a);
+    assert_true(mp_chmap_sel_fallback(&s, &b));
+    assert_string_equal(mp_chmap_to_str(&b), "7.1(alsa)");
+}
+
+static void test_mp_chmap_sel_fallback_mono_to_stereo(void **state) {
+    struct mp_chmap a;
+    struct mp_chmap b;
+    struct mp_chmap c;
+    struct mp_chmap_sel s = {0};
+
+    mp_chmap_from_str(&a, bstr0("stereo"));
+    mp_chmap_from_str(&b, bstr0("5.1"));
+    mp_chmap_from_str(&c, bstr0("mono"));
+
+    mp_chmap_sel_add_map(&s, &a);
+    mp_chmap_sel_add_map(&s, &b);
+    assert_true(mp_chmap_sel_fallback(&s, &c));
+    assert_string_equal(mp_chmap_to_str(&c), "stereo");
+}
+
+static void test_mp_chmap_sel_fallback_stereo_to_stereo(void **state) {
+    struct mp_chmap a;
+    struct mp_chmap b;
+    struct mp_chmap c;
+    struct mp_chmap_sel s = {0};
+
+    mp_chmap_from_str(&a, bstr0("stereo"));
+    mp_chmap_from_str(&b, bstr0("5.1"));
+    mp_chmap_from_str(&c, bstr0("stereo"));
+
+    mp_chmap_sel_add_map(&s, &a);
+    mp_chmap_sel_add_map(&s, &b);
+    assert_true(mp_chmap_sel_fallback(&s, &c));
+    assert_string_equal(mp_chmap_to_str(&c), "stereo");
+}
+
+int main(void) {
+    const UnitTest tests[] = {
+        unit_test(test_mp_chmap_sel_fallback_upmix),
+        unit_test(test_mp_chmap_sel_fallback_downmix),
+        unit_test(test_mp_chmap_sel_fallback_incompatible),
+        unit_test(test_mp_chmap_sel_fallback_prefer_compatible),
+        unit_test(test_mp_chmap_sel_fallback_prefer_closest_upmix),
+        unit_test(test_mp_chmap_sel_fallback_use_replacements),
+        unit_test(test_mp_chmap_sel_fallback_reject_unknown),
+        unit_test(test_mp_chmap_sel_fallback_works_on_alsa_chmaps),
+        unit_test(test_mp_chmap_sel_fallback_mono_to_stereo),
+        unit_test(test_mp_chmap_sel_fallback_stereo_to_stereo),
+    };
+    return run_tests(tests);
+}