source-output: Get the correct source for "direct_on_input" streams

If a capture stream captures from a single sink input (so the capture
stream is a so called "direct on input" stream), then it needs to
connect to the monitor source of the sink to which the sink input is
connected. Previously the correct source was not figured out
automatically, causing the capture stream creation to fail.

diff --git a/src/pulsecore/source-output.c b/src/pulsecore/source-output.c
index 66a33bd..5a48935 100644 (file)
--- a/src/pulsecore/source-output.c
+++ b/src/pulsecore/source-output.c
@@ -255,8 +255,16 @@ int pa_source_output_new(
     pa_return_val_if_fail(!data->driver || pa_utf8_valid(data->driver), -PA_ERR_INVALID);
 
     if (!data->source) {
-        pa_source *source = pa_namereg_get(core, NULL, PA_NAMEREG_SOURCE);
-        pa_return_val_if_fail(source, -PA_ERR_NOENTITY);
+        pa_source *source;
+
+        if (data->direct_on_input) {
+            source = data->direct_on_input->sink->monitor_source;
+            pa_return_val_if_fail(source, -PA_ERR_INVALID);
+        } else {
+            source = pa_namereg_get(core, NULL, PA_NAMEREG_SOURCE);
+            pa_return_val_if_fail(source, -PA_ERR_NOENTITY);
+        }
+
         pa_source_output_new_data_set_source(data, source, false);
     }