From 78f51945418696073fe877f5f6f5faf19443b8a6 Mon Sep 17 00:00:00 2001
From: Colin Guthrie <cguthrie@mandriva.org>
Date: Sat, 17 Oct 2009 15:59:29 +0100
Subject: Allow for the sink input peak detect to survive across sink moves.

---
 src/mainwindow.cc   | 30 +++++++++++++++++++-----------
 src/mainwindow.h    |  2 +-
 src/streamwidget.cc |  3 ++-
 src/streamwidget.h  |  1 +
 4 files changed, 23 insertions(+), 13 deletions(-)

diff --git a/src/mainwindow.cc b/src/mainwindow.cc
index 5aa509e..99b9530 100644
--- a/src/mainwindow.cc
+++ b/src/mainwindow.cc
@@ -317,8 +317,7 @@ void MainWindow::createMonitorStreamForSource(uint32_t source_idx) {
     }
 }
 
-void MainWindow::createMonitorStreamForSinkInput(uint32_t sink_input_idx, uint32_t sink_idx) {
-    pa_stream *s;
+void MainWindow::createMonitorStreamForSinkInput(SinkInputWidget* w, uint32_t sink_idx) {
     char t[16];
     pa_buffer_attr attr;
     pa_sample_spec ss;
@@ -331,6 +330,11 @@ void MainWindow::createMonitorStreamForSinkInput(uint32_t sink_input_idx, uint32
     if (!sinkWidgets.count(sink_idx))
         return;
 
+    if (w->peak) {
+        pa_stream_disconnect(w->peak);
+        w->peak = NULL;
+    }
+
     monitor_source_idx = sinkWidgets[sink_idx]->monitor_index;
 
     memset(&attr, 0, sizeof(attr));
@@ -339,18 +343,19 @@ void MainWindow::createMonitorStreamForSinkInput(uint32_t sink_input_idx, uint32
 
     snprintf(t, sizeof(t), "%u", monitor_source_idx);
 
-    if (!(s = pa_stream_new(get_context(), _("Peak detect"), &ss, NULL))) {
+    if (!(w->peak = pa_stream_new(get_context(), _("Peak detect"), &ss, NULL))) {
         show_error(_("Failed to create monitoring stream"));
         return;
     }
 
-    pa_stream_set_monitor_stream(s, sink_input_idx);
-    pa_stream_set_read_callback(s, read_callback, this);
-    pa_stream_set_suspended_callback(s, suspended_callback, this);
+    pa_stream_set_monitor_stream(w->peak, w->index);
+    pa_stream_set_read_callback(w->peak, read_callback, this);
+    pa_stream_set_suspended_callback(w->peak, suspended_callback, this);
 
-    if (pa_stream_connect_record(s, t, &attr, (pa_stream_flags_t) (PA_STREAM_DONT_MOVE|PA_STREAM_PEAK_DETECT|PA_STREAM_ADJUST_LATENCY)) < 0) {
+    if (pa_stream_connect_record(w->peak, t, &attr, (pa_stream_flags_t) (PA_STREAM_DONT_MOVE|PA_STREAM_PEAK_DETECT|PA_STREAM_ADJUST_LATENCY)) < 0) {
         show_error(_("Failed to connect monitoring stream"));
-        pa_stream_unref(s);
+        pa_stream_unref(w->peak);
+        w->peak = NULL;
         return;
     }
 }
@@ -469,9 +474,12 @@ void MainWindow::updateSinkInput(const pa_sink_input_info &info) {
         }
     }
 
-    if (sinkInputWidgets.count(info.index))
+    if (sinkInputWidgets.count(info.index)) {
         w = sinkInputWidgets[info.index];
-    else {
+        if (pa_context_get_server_protocol_version(get_context()) >= 13)
+            if (w->sinkIndex() != info.sink)
+                createMonitorStreamForSinkInput(w, info.sink);
+    } else {
         sinkInputWidgets[info.index] = w = SinkInputWidget::create(this);
         w->setChannelMap(info.channel_map, true);
         streamsVBox->pack_start(*w, false, false, 0);
@@ -480,7 +488,7 @@ void MainWindow::updateSinkInput(const pa_sink_input_info &info) {
         is_new = true;
 
         if (pa_context_get_server_protocol_version(get_context()) >= 13)
-            createMonitorStreamForSinkInput(info.index, info.sink);
+            createMonitorStreamForSinkInput(w, info.sink);
     }
 
     w->updating = true;
diff --git a/src/mainwindow.h b/src/mainwindow.h
index 3c72ef3..0ee84b5 100644
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -80,7 +80,7 @@ public:
     void updateDeviceVisibility();
     void reallyUpdateDeviceVisibility();
     void createMonitorStreamForSource(uint32_t source_idx);
-    void createMonitorStreamForSinkInput(uint32_t sink_input_idx, uint32_t sink_idx);
+    void createMonitorStreamForSinkInput(SinkInputWidget* w, uint32_t sink_idx);
 
     void setIconFromProplist(Gtk::Image *icon, pa_proplist *l, const char *name);
 
diff --git a/src/streamwidget.cc b/src/streamwidget.cc
index 2ab5c12..12c7d6d 100644
--- a/src/streamwidget.cc
+++ b/src/streamwidget.cc
@@ -31,7 +31,8 @@
 /*** StreamWidget ***/
 StreamWidget::StreamWidget(BaseObjectType* cobject, const Glib::RefPtr<Gnome::Glade::Xml>& x) :
     MinimalStreamWidget(cobject, x),
-    mpMainWindow(NULL) {
+    mpMainWindow(NULL),
+    peak(NULL) {
 
     x->get_widget("lockToggleButton", lockToggleButton);
     x->get_widget("muteToggleButton", muteToggleButton);
diff --git a/src/streamwidget.h b/src/streamwidget.h
index 215e332..28a2a47 100644
--- a/src/streamwidget.h
+++ b/src/streamwidget.h
@@ -43,6 +43,7 @@ public:
 
     pa_channel_map channelMap;
     pa_cvolume volume;
+    pa_stream *peak;
 
     ChannelWidget *channelWidgets[PA_CHANNELS_MAX];
 
-- 
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