[PATCH 2/3] sink, source: improve state change logging

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Now the old and new state is logged every time when the sink or source
state changes.
---
 src/pulsecore/cli-text.c | 38 ++------------------------------------
 src/pulsecore/sink.c     | 14 ++++++++++++++
 src/pulsecore/sink.h     |  2 ++
 src/pulsecore/source.c   | 14 ++++++++++++++
 src/pulsecore/source.h   |  2 ++
 5 files changed, 34 insertions(+), 36 deletions(-)

diff --git a/src/pulsecore/cli-text.c b/src/pulsecore/cli-text.c
index ded82f6e4..794f51c13 100644
--- a/src/pulsecore/cli-text.c
+++ b/src/pulsecore/cli-text.c
@@ -196,40 +196,6 @@ char *pa_card_list_to_string(pa_core *c) {
     return pa_strbuf_to_string_free(s);
 }
 
-static const char *sink_state_to_string(pa_sink_state_t state) {
-    switch (state) {
-        case PA_SINK_INIT:
-            return "INIT";
-        case PA_SINK_RUNNING:
-            return "RUNNING";
-        case PA_SINK_SUSPENDED:
-            return "SUSPENDED";
-        case PA_SINK_IDLE:
-            return "IDLE";
-        case PA_SINK_UNLINKED:
-            return "UNLINKED";
-        default:
-            return "INVALID";
-    }
-}
-
-static const char *source_state_to_string(pa_source_state_t state) {
-    switch (state) {
-        case PA_SOURCE_INIT:
-            return "INIT";
-        case PA_SOURCE_RUNNING:
-            return "RUNNING";
-        case PA_SOURCE_SUSPENDED:
-            return "SUSPENDED";
-        case PA_SOURCE_IDLE:
-            return "IDLE";
-        case PA_SOURCE_UNLINKED:
-            return "UNLINKED";
-        default:
-            return "INVALID";
-    }
-}
-
 char *pa_sink_list_to_string(pa_core *c) {
     pa_strbuf *s;
     pa_sink *sink;
@@ -283,7 +249,7 @@ char *pa_sink_list_to_string(pa_core *c) {
             sink->flags & PA_SINK_LATENCY ? "LATENCY " : "",
             sink->flags & PA_SINK_FLAT_VOLUME ? "FLAT_VOLUME " : "",
             sink->flags & PA_SINK_DYNAMIC_LATENCY ? "DYNAMIC_LATENCY" : "",
-            sink_state_to_string(pa_sink_get_state(sink)),
+            pa_sink_state_to_string(pa_sink_get_state(sink)),
             sink->suspend_cause & PA_SUSPEND_USER ? "USER " : "",
             sink->suspend_cause & PA_SUSPEND_APPLICATION ? "APPLICATION " : "",
             sink->suspend_cause & PA_SUSPEND_IDLE ? "IDLE " : "",
@@ -396,7 +362,7 @@ char *pa_source_list_to_string(pa_core *c) {
             source->flags & PA_SOURCE_DECIBEL_VOLUME ? "DECIBEL_VOLUME " : "",
             source->flags & PA_SOURCE_LATENCY ? "LATENCY " : "",
             source->flags & PA_SOURCE_DYNAMIC_LATENCY ? "DYNAMIC_LATENCY" : "",
-            source_state_to_string(pa_source_get_state(source)),
+            pa_source_state_to_string(pa_source_get_state(source)),
             source->suspend_cause & PA_SUSPEND_USER ? "USER " : "",
             source->suspend_cause & PA_SUSPEND_APPLICATION ? "APPLICATION " : "",
             source->suspend_cause & PA_SUSPEND_IDLE ? "IDLE " : "",
diff --git a/src/pulsecore/sink.c b/src/pulsecore/sink.c
index 39bf18f10..35f189ba9 100644
--- a/src/pulsecore/sink.c
+++ b/src/pulsecore/sink.c
@@ -427,6 +427,7 @@ static int sink_set_state(pa_sink *s, pa_sink_state_t state) {
             return ret;
         }
 
+    pa_log_debug("%s: state: %s -> %s", s->name, pa_sink_state_to_string(s->state), pa_sink_state_to_string(state));
     s->state = state;
 
     if (state != PA_SINK_UNLINKED) { /* if we enter UNLINKED state pa_sink_unlink() will fire the appropriate events */
@@ -2462,6 +2463,19 @@ unsigned pa_sink_check_suspend(pa_sink *s, pa_sink_input *ignore_input, pa_sourc
     return ret;
 }
 
+const char *pa_sink_state_to_string(pa_sink_state_t state) {
+    switch (state) {
+        case PA_SINK_INIT:          return "INIT";
+        case PA_SINK_IDLE:          return "IDLE";
+        case PA_SINK_RUNNING:       return "RUNNING";
+        case PA_SINK_SUSPENDED:     return "SUSPENDED";
+        case PA_SINK_UNLINKED:      return "UNLINKED";
+        case PA_SINK_INVALID_STATE: return "INVALID_STATE";
+    }
+
+    pa_assert_not_reached();
+}
+
 /* Called from the IO thread */
 static void sync_input_volumes_within_thread(pa_sink *s) {
     pa_sink_input *i;
diff --git a/src/pulsecore/sink.h b/src/pulsecore/sink.h
index cae5e517b..3fb230123 100644
--- a/src/pulsecore/sink.h
+++ b/src/pulsecore/sink.h
@@ -476,6 +476,8 @@ unsigned pa_sink_check_suspend(pa_sink *s, pa_sink_input *ignore_input, pa_sourc
 
 #define pa_sink_get_state(s) ((s)->state)
 
+const char *pa_sink_state_to_string(pa_sink_state_t state);
+
 /* Moves all inputs away, and stores them in pa_queue */
 pa_queue *pa_sink_move_all_start(pa_sink *s, pa_queue *q);
 void pa_sink_move_all_finish(pa_sink *s, pa_queue *q, bool save);
diff --git a/src/pulsecore/source.c b/src/pulsecore/source.c
index 6099c10d5..a0ab8e964 100644
--- a/src/pulsecore/source.c
+++ b/src/pulsecore/source.c
@@ -381,6 +381,7 @@ static int source_set_state(pa_source *s, pa_source_state_t state) {
             return ret;
         }
 
+    pa_log_debug("%s: state: %s -> %s", s->name, pa_source_state_to_string(s->state), pa_source_state_to_string(state));
     s->state = state;
 
     if (state != PA_SOURCE_UNLINKED) { /* if we enter UNLINKED state pa_source_unlink() will fire the appropriate events */
@@ -2014,6 +2015,19 @@ unsigned pa_source_check_suspend(pa_source *s, pa_source_output *ignore) {
     return ret;
 }
 
+const char *pa_source_state_to_string(pa_source_state_t state) {
+    switch (state) {
+        case PA_SOURCE_INIT:          return "INIT";
+        case PA_SOURCE_IDLE:          return "IDLE";
+        case PA_SOURCE_RUNNING:       return "RUNNING";
+        case PA_SOURCE_SUSPENDED:     return "SUSPENDED";
+        case PA_SOURCE_UNLINKED:      return "UNLINKED";
+        case PA_SOURCE_INVALID_STATE: return "INVALID_STATE";
+    }
+
+    pa_assert_not_reached();
+}
+
 /* Called from the IO thread */
 static void sync_output_volumes_within_thread(pa_source *s) {
     pa_source_output *o;
diff --git a/src/pulsecore/source.h b/src/pulsecore/source.h
index 7fb4a79ea..75ce241f1 100644
--- a/src/pulsecore/source.h
+++ b/src/pulsecore/source.h
@@ -407,6 +407,8 @@ unsigned pa_source_check_suspend(pa_source *s, pa_source_output *ignore);
 
 #define pa_source_get_state(s) ((pa_source_state_t) (s)->state)
 
+const char *pa_source_state_to_string(pa_source_state_t state);
+
 /* Moves all inputs away, and stores them in pa_queue */
 pa_queue *pa_source_move_all_start(pa_source *s, pa_queue *q);
 void pa_source_move_all_finish(pa_source *s, pa_queue *q, bool save);
-- 
2.14.2



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