From a2c424c76165ab22105270cddb8e5a79bf554837 Mon Sep 17 00:00:00 2001
From: Mark Kendall <mkendall@mythtv.org>
Date: Fri, 18 Mar 2011 16:48:04 +0800
Subject: [PATCH] libmythtv: Add visualiser support to AudioPlayer.

---
 mythtv/libs/libmythtv/audioplayer.cpp | 53 +++++++++++++++++++++++++++
 mythtv/libs/libmythtv/audioplayer.h   | 13 +++++++
 2 files changed, 66 insertions(+)

diff --git a/mythtv/libs/libmythtv/audioplayer.cpp b/mythtv/libs/libmythtv/audioplayer.cpp
index ddf7cf7a9b7..461904a9568 100644
--- a/mythtv/libs/libmythtv/audioplayer.cpp
+++ b/mythtv/libs/libmythtv/audioplayer.cpp
@@ -18,6 +18,55 @@ AudioPlayer::AudioPlayer(MythPlayer *parent, bool muted)
 AudioPlayer::~AudioPlayer()
 {
     DeleteOutput();
+    m_visuals.clear();
+}
+
+void AudioPlayer::addVisual(MythTV::Visual *vis)
+{
+    if (!m_audioOutput)
+        return;
+
+    QMutexLocker lock(&m_lock);
+    Visuals::iterator it = std::find(m_visuals.begin(), m_visuals.end(), vis);
+    if (it == m_visuals.end())
+    {
+        m_visuals.push_back(vis);
+        m_audioOutput->addVisual(vis);
+    }
+}
+
+void AudioPlayer::removeVisual(MythTV::Visual *vis)
+{
+    if (!m_audioOutput)
+        return;
+
+    QMutexLocker lock(&m_lock);
+    Visuals::iterator it = std::find(m_visuals.begin(), m_visuals.end(), vis);
+    if (it != m_visuals.end())
+    {
+        m_visuals.erase(it);
+        m_audioOutput->removeVisual(vis);
+    }
+}
+
+void AudioPlayer::AddVisuals(void)
+{
+    if (!m_audioOutput)
+        return;
+
+    QMutexLocker lock(&m_lock);
+    for (uint i = 0; i < m_visuals.size(); i++)
+        m_audioOutput->addVisual(m_visuals[i]);
+}
+
+void AudioPlayer::RemoveVisuals(void)
+{
+    if (!m_audioOutput)
+        return;
+
+    QMutexLocker lock(&m_lock);
+    for (uint i = 0; i < m_visuals.size(); i++)
+        m_audioOutput->removeVisual(m_visuals[i]);
 }
 
 void AudioPlayer::Reset(void)
@@ -31,6 +80,7 @@ void AudioPlayer::Reset(void)
 
 void AudioPlayer::DeleteOutput(void)
 {
+    RemoveVisuals();
     QMutexLocker locker(&m_lock);
     if (m_audioOutput)
     {
@@ -81,6 +131,7 @@ QString AudioPlayer::ReinitAudio(void)
         {
             errMsg = m_audioOutput->GetError();
         }
+        AddVisuals();
     }
     else if (want_audio && !m_no_audio_in)
     {
@@ -150,7 +201,9 @@ void AudioPlayer::PauseAudioUntilBuffered()
 void AudioPlayer::SetAudioOutput(AudioOutput *ao)
 {
     m_lock.lock();
+    RemoveVisuals();
     m_audioOutput = ao;
+    AddVisuals();
     m_lock.unlock();
 }
 
diff --git a/mythtv/libs/libmythtv/audioplayer.h b/mythtv/libs/libmythtv/audioplayer.h
index b9e173688df..8ff42f0933d 100644
--- a/mythtv/libs/libmythtv/audioplayer.h
+++ b/mythtv/libs/libmythtv/audioplayer.h
@@ -6,12 +6,20 @@
 class MythPlayer;
 class AudioOutput;
 
+namespace MythTV
+{
+    class Visual;
+}
+
 class MTV_PUBLIC AudioPlayer
 {
   public:
     AudioPlayer(MythPlayer *parent, bool muted);
    ~AudioPlayer();
 
+    void addVisual(MythTV::Visual *vis);
+    void removeVisual(MythTV::Visual *vis);
+
     void  Reset(void);
     void  DeleteOutput(void);
     QString ReinitAudio(void);
@@ -62,6 +70,10 @@ class MTV_PUBLIC AudioPlayer
     bool GetBufferStatus(uint &fill, uint &total);
     bool IsBufferAlmostFull(void);
 
+  private:
+    void AddVisuals(void);
+    void RemoveVisuals(void);
+
   private:
     MythPlayer  *m_parent;
     AudioOutput *m_audioOutput;
@@ -79,6 +91,7 @@ class MTV_PUBLIC AudioPlayer
     QString      m_passthru_device;
     bool         m_no_audio_in;
     bool         m_no_audio_out;
+    vector<MythTV::Visual*> m_visuals;
 };
 
 #endif // AUDIOPLAYER_H