[PATCH 12/13] loopback: Validate the rate parameter

[georg@xxxxxxxx (Georg Chini)]

---
 src/modules/module-loopback.c | 5 +++++
 src/pulse/sample.c            | 5 ++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/modules/module-loopback.c b/src/modules/module-loopback.c
index d22afb5..7474ef2 100644
--- a/src/modules/module-loopback.c
+++ b/src/modules/module-loopback.c
@@ -1039,6 +1039,11 @@ int pa__init(pa_module *m) {
         goto fail;
     }
 
+    if (ss.rate < 4000 || ss.rate > PA_RATE_MAX) {
+        pa_log("Invalid rate specification, valid range is 4000 Hz to %i Hz", PA_RATE_MAX);
+        goto fail;
+    }
+
     if (pa_modargs_get_value(ma, "format", NULL))
         format_set = true;
 
diff --git a/src/pulse/sample.c b/src/pulse/sample.c
index 1331c72..69ac83f 100644
--- a/src/pulse/sample.c
+++ b/src/pulse/sample.c
@@ -106,7 +106,10 @@ int pa_sample_format_valid(unsigned format) {
 }
 
 int pa_sample_rate_valid(uint32_t rate) {
-    return rate > 0 && rate <= PA_RATE_MAX;
+    /* The extra 1% is due to module-loopback: it temporarily sets
+     * a higher-than-nominal rate to get rid of excessive buffer
+     * latency */
+    return rate > 0 && rate <= PA_RATE_MAX * 101 / 100;
 }
 
 int pa_channels_valid(uint8_t channels) {
-- 
2.1.4