From 79a63cde40917504e55375309fb5d03cd7483e3a Mon Sep 17 00:00:00 2001
From: trialuser02 <trialuser02@90c681e8-e032-0410-971d-27865f9a5e38>
Date: Sat, 10 Nov 2018 18:39:14 +0000
Subject: pulseaudio: optimization

git-svn-id: http://svn.code.sf.net/p/qmmp-dev/code/trunk/qmmp@8416 90c681e8-e032-0410-971d-27865f9a5e38
---
 src/plugins/Output/pulseaudio/outputpulseaudio.cpp | 69 ++++++++++------------
 src/plugins/Output/pulseaudio/outputpulseaudio.h   | 11 ++--
 2 files changed, 37 insertions(+), 43 deletions(-)

(limited to 'src')

diff --git a/src/plugins/Output/pulseaudio/outputpulseaudio.cpp b/src/plugins/Output/pulseaudio/outputpulseaudio.cpp
index 44bd8ec12..a243ca877 100644
--- a/src/plugins/Output/pulseaudio/outputpulseaudio.cpp
+++ b/src/plugins/Output/pulseaudio/outputpulseaudio.cpp
@@ -157,40 +157,16 @@ bool OutputPulseAudio::initialize(quint32 freq, ChannelMap map, Qmmp::AudioForma
 
     bool success = false;
     pa_operation *op = pa_context_subscribe(m_ctx, PA_SUBSCRIPTION_MASK_SINK_INPUT, OutputPulseAudio::context_success_cb, &success);
-    if(!op)
-    {
-        qWarning("OutputPulseAudio: pa_context_subscribe failed: %s", pa_strerror(pa_context_errno(m_ctx)));
-        return false;
-    }
-
-    pa_operation_state_t op_state;
-    while((op_state = pa_operation_get_state(op)) != PA_OPERATION_DONE && isReady())
-    {
-       poll();
-    }
-    pa_operation_unref(op);
-
-    if(op_state != PA_OPERATION_DONE || !success)
+    if(!process(op) || !success)
     {
         qWarning("OutputPulseAudio: pa_context_subscribe failed: %s", pa_strerror(pa_context_errno(m_ctx)));
         return false;
     }
     success = false;
-    if(!(op = pa_context_get_sink_input_info(m_ctx, pa_stream_get_index(m_stream), OutputPulseAudio::info_cb, &success)))
+    op = pa_context_get_sink_input_info(m_ctx, pa_stream_get_index(m_stream), OutputPulseAudio::info_cb, &success);
+    if(!process(op) || !success)
     {
-        qWarning("OutputPulseAudio: pa_context_get_sink_input_info failed: %s", pa_strerror(pa_context_errno(m_ctx)));
-        return false;
-    }
-
-    while((op_state = pa_operation_get_state(op)) != PA_OPERATION_DONE && isReady())
-    {
-        poll();
-    }
-    pa_operation_unref(op);
-
-    if(op_state != PA_OPERATION_DONE || !success)
-    {
-        qWarning("OutputPulseAudio: pa_context_get_sink_input_info failed: %s", pa_strerror(pa_context_errno(m_ctx)));
+        qWarning("OutputPulseAudio:pa_context_get_sink_input_info: %s", pa_strerror(pa_context_errno(m_ctx)));
         return false;
     }
 
@@ -226,23 +202,25 @@ qint64 OutputPulseAudio::writeAudio(unsigned char *data, qint64 maxSize)
 void OutputPulseAudio::drain()
 {
     pa_operation *op = pa_stream_drain(m_stream, OutputPulseAudio::stream_success_cb, 0);
-
-    while(pa_operation_get_state(op) != PA_OPERATION_DONE && isReady())
-    {
-        poll();
-    }
-    pa_operation_unref(op);
+    process(op);
 }
 
 void OutputPulseAudio::reset()
 {
     pa_operation *op = pa_stream_flush(m_stream, OutputPulseAudio::stream_success_cb, 0);
+    process(op);
+}
 
-    while(pa_operation_get_state(op) != PA_OPERATION_DONE && isReady())
-    {
-       poll();
-    }
-    pa_operation_unref(op);
+void OutputPulseAudio::suspend()
+{
+    pa_operation *op = pa_stream_cork(m_stream, 1, OutputPulseAudio::stream_success_cb, 0);
+    process(op);
+}
+
+void OutputPulseAudio::resume()
+{
+    pa_operation *op = pa_stream_cork(m_stream, 0, OutputPulseAudio::stream_success_cb, 0);
+    process(op);
 }
 
 void OutputPulseAudio::setVolume(const VolumeSettings &v)
@@ -289,6 +267,19 @@ void OutputPulseAudio::poll()
     pa_mainloop_poll(m_loop);
     pa_mainloop_dispatch(m_loop);
 }
+
+bool OutputPulseAudio::process(pa_operation *op)
+{
+    if(!op)
+        return false;
+
+    pa_operation_state_t state;
+    while((state = pa_operation_get_state(op)) != PA_OPERATION_DONE && isReady())
+       poll();
+
+    pa_operation_unref(op);
+    return (state == PA_OPERATION_DONE) && isReady();
+}
 //callbacks
 void OutputPulseAudio::subscribe_cb(pa_context *ctx, pa_subscription_event_type t, uint32_t index, void *data)
 {
diff --git a/src/plugins/Output/pulseaudio/outputpulseaudio.h b/src/plugins/Output/pulseaudio/outputpulseaudio.h
index b78b7cde8..ae95da520 100644
--- a/src/plugins/Output/pulseaudio/outputpulseaudio.h
+++ b/src/plugins/Output/pulseaudio/outputpulseaudio.h
@@ -46,6 +46,8 @@ public:
     qint64 writeAudio(unsigned char *data, qint64 maxSize);
     void drain();
     void reset();
+    void suspend();
+    void resume();
     void setVolume(const VolumeSettings &v);
 
     static OutputPulseAudio *instance;
@@ -56,13 +58,14 @@ private:
     void uninitialize();
     bool isReady() const;
     void poll();
+    bool process(pa_operation *op);
     //callbacks
     static void subscribe_cb(pa_context *ctx, pa_subscription_event_type t, uint32_t index, void *data);
-    static void info_cb (pa_context *ctx, const pa_sink_input_info * info, int, void * data);
-    static void context_success_cb (pa_context *, int success, void *data);
-    static void stream_success_cb (pa_stream *, int success, void *data);
+    static void info_cb(pa_context *ctx, const pa_sink_input_info * info, int, void * data);
+    //converters
+    static void context_success_cb(pa_context *, int success, void *data);
+    static void stream_success_cb(pa_stream *, int success, void *data);
 
-    //pa_simple *m_connection;
     pa_mainloop *m_loop;
     pa_context *m_ctx;
     pa_stream *m_stream;
-- 
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