From a69b7294145e7dfed6ede8e3d8aa01d7e8509142 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 19 Aug 2009 01:02:32 +0200
Subject: voltest: extend test to verify correctness of _multiply() and
 _divide()

---
 src/modules/reserve-monitor.c | 24 +-----------------------
 src/modules/reserve.c         | 25 +------------------------
 src/tests/voltest.c           | 36 +++++++++++++++++++++++++++++++++++-
 3 files changed, 37 insertions(+), 48 deletions(-)

diff --git a/src/modules/reserve-monitor.c b/src/modules/reserve-monitor.c
index 97cb9b9e..ab453e61 100644
--- a/src/modules/reserve-monitor.c
+++ b/src/modules/reserve-monitor.c
@@ -64,7 +64,6 @@ static DBusHandlerResult filter_handler(
 	DBusMessage *s,
 	void *userdata) {
 
-	DBusMessage *reply;
 	rm_monitor *m;
 	DBusError error;
 
@@ -105,31 +104,10 @@ static DBusHandlerResult filter_handler(
 		}
 	}
 
-	return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
-
 invalid:
-	if (!(reply = dbus_message_new_error(
-		      s,
-		      DBUS_ERROR_INVALID_ARGS,
-		      "Invalid arguments")))
-		goto oom;
-
-	if (!dbus_connection_send(c, reply, NULL))
-		goto oom;
-
-	dbus_message_unref(reply);
-
 	dbus_error_free(&error);
 
-	return DBUS_HANDLER_RESULT_HANDLED;
-
-oom:
-	if (reply)
-		dbus_message_unref(reply);
-
-	dbus_error_free(&error);
-
-	return DBUS_HANDLER_RESULT_NEED_MEMORY;
+	return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 }
 
 int rm_watch(
diff --git a/src/modules/reserve.c b/src/modules/reserve.c
index 5597f177..b4c168cf 100644
--- a/src/modules/reserve.c
+++ b/src/modules/reserve.c
@@ -291,7 +291,6 @@ static DBusHandlerResult filter_handler(
 	DBusMessage *m,
 	void *userdata) {
 
-	DBusMessage *reply;
 	rd_device *d;
 	DBusError error;
 
@@ -323,35 +322,13 @@ static DBusHandlerResult filter_handler(
 				rd_release(d);
 			}
 
-			return DBUS_HANDLER_RESULT_HANDLED;
 		}
 	}
 
-	return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
-
 invalid:
-	if (!(reply = dbus_message_new_error(
-		      m,
-		      DBUS_ERROR_INVALID_ARGS,
-		      "Invalid arguments")))
-		goto oom;
-
-	if (!dbus_connection_send(c, reply, NULL))
-		goto oom;
-
-	dbus_message_unref(reply);
-
-	dbus_error_free(&error);
-
-	return DBUS_HANDLER_RESULT_HANDLED;
-
-oom:
-	if (reply)
-		dbus_message_unref(reply);
-
 	dbus_error_free(&error);
 
-	return DBUS_HANDLER_RESULT_NEED_MEMORY;
+	return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
 }
 
 
diff --git a/src/tests/voltest.c b/src/tests/voltest.c
index 64aec5c6..551f7ecd 100644
--- a/src/tests/voltest.c
+++ b/src/tests/voltest.c
@@ -33,6 +33,8 @@ int main(int argc, char *argv[]) {
     pa_cvolume cv;
     float b;
     pa_channel_map map;
+    pa_volume_t md = 0;
+    unsigned mdn = 0;
 
     printf("Attenuation of sample 1 against 32767: %g dB\n", 20.0*log10(1.0/32767.0));
     printf("Smallest possible attenutation > 0 applied to 32767: %li\n", lrint(32767.0*pa_sw_volume_to_linear(1)));
@@ -85,16 +87,48 @@ int main(int argc, char *argv[]) {
                 printf("After: volume: [%s]; balance: %2.1f (intended: %2.1f) %s\n", pa_cvolume_snprint(s, sizeof(s), &r), k, b, k < b-.05 || k > b+.5 ? "MISMATCH" : "");
             }
 
-    for (v = PA_VOLUME_MUTED; v <= PA_VOLUME_NORM*2; v += 1) {
+    for (v = PA_VOLUME_MUTED; v <= PA_VOLUME_NORM*2; v += 51) {
 
         double l = pa_sw_volume_to_linear(v);
         pa_volume_t k = pa_sw_volume_from_linear(l);
         double db = pa_sw_volume_to_dB(v);
         pa_volume_t r = pa_sw_volume_from_dB(db);
+        pa_volume_t w;
 
         pa_assert(k == v);
         pa_assert(r == v);
+
+        for (w = PA_VOLUME_MUTED; w < PA_VOLUME_NORM*2; w += 37) {
+
+            double t = pa_sw_volume_to_linear(w);
+            double db2 = pa_sw_volume_to_dB(w);
+            pa_volume_t p, p1, p2;
+            double q, qq;
+
+            p = pa_sw_volume_multiply(v, w);
+            qq = db + db2;
+            p2 = pa_sw_volume_from_dB(qq);
+            q = l*t;
+            p1 = pa_sw_volume_from_linear(q);
+
+            if (p2 > p && p2 - p > md)
+                md = p2 - p;
+            if (p2 < p && p - p2 > md)
+                md = p - p2;
+            if (p1 > p && p1 - p > md)
+                md = p1 - p;
+            if (p1 < p && p - p1 > md)
+                md = p - p1;
+
+            if (p1 != p || p2 != p)
+                mdn++;
+        }
     }
 
+    printf("max deviation: %lu n=%lu\n", (unsigned long) md, (unsigned long) mdn);
+
+    pa_assert(md <= 1);
+    pa_assert(mdn <= 251);
+
     return 0;
 }
-- 
cgit