From 8e3918bce7b2e1e0e23cab69334df52b58d10f4d Mon Sep 17 00:00:00 2001
From: Christian Gmeiner <christian.gmeiner@gmail.com>
Date: Mon, 23 Feb 2009 07:37:49 +0100
Subject: simplify audiochannel handling

---
 dxr3audiodecoder.c |  4 ++--
 dxr3device.h       |  4 ----
 dxr3interface.c    | 19 +++++++++----------
 dxr3syncbuffer.c   |  1 -
 dxr3syncbuffer.h   | 15 ++++-----------
 5 files changed, 15 insertions(+), 28 deletions(-)

diff --git a/dxr3audiodecoder.c b/dxr3audiodecoder.c
index 8ce0812..1b33ed1 100644
--- a/dxr3audiodecoder.c
+++ b/dxr3audiodecoder.c
@@ -146,13 +146,13 @@ void cDxr3AudioDecoder::Decode(const uint8_t* buf, int length, uint32_t pts,
 		if (rate != -1) throw UNEXPECTED_PARAMETER_CHANGE;
 		rate = Codec.codec_context.sample_rate;
 	    }
-	    if (Codec.codec_context.channels != channels + 1)
+	    if (Codec.codec_context.channels != channels)
 	    {
 		dsyslog("dxr3: audiodecoder: channels=%d",
 			Codec.codec_context.channels);
 		if (channels != -1)
 		    throw UNEXPECTED_PARAMETER_CHANGE;
-		channels = (Codec.codec_context.channels == 2) ? 1 : 0;
+		channels = Codec.codec_context.channels;
 	    }
 	    if (out_size)
 	    {
diff --git a/dxr3device.h b/dxr3device.h
index 4ea31d7..d58319f 100644
--- a/dxr3device.h
+++ b/dxr3device.h
@@ -40,7 +40,6 @@ class iAudio;
 class cDxr3Device : public cDevice {
 public:
     cDxr3Device();
-    cDxr3Device(cDxr3Interface& demuxDevice);
     ~cDxr3Device();
 
     virtual void MakePrimaryDevice(bool On);
@@ -84,9 +83,6 @@ protected:
     std::string m_strBuf;
     int m_Offset;
 
-    //virtual bool SetPlayMode(ePlayMode PlayMode);
-    //uint8_t m_pBuffer[MAX_VIDEO_BUFFER_SIZE];
-    //cDxr3StartStopThread* m_pStartStopThread;
     cDxr3SpuDecoder* m_spuDecoder;
 
 private:
diff --git a/dxr3interface.c b/dxr3interface.c
index 9eedf5c..8a9a523 100644
--- a/dxr3interface.c
+++ b/dxr3interface.c
@@ -192,17 +192,16 @@ void cDxr3Interface::SetAudioSpeed(uint32_t speed)
 //! set number of channels
 void cDxr3Interface::SetChannelCount(uint32_t count)
 {
+    // 0 = mono, 1 = stereo
+    uint32_t ioval = count - 1;
+
     if (!m_ExternalReleased && m_audioMode != EM8300_AUDIOMODE_DIGITALAC3 &&
-	m_audioChannelCount != count && count != UNKNOWN_CHANNEL_COUNT)
-    {
-	if (ioctl(m_fdAudio, SNDCTL_DSP_STEREO, &count) == -1)
-	{
-	    esyslog("dxr3: unable to set channel count to %d: %m", count);
-	}
-	else
-	{
-	    m_audioChannelCount = count;
-	}
+        m_audioChannelCount != count) {
+        if (ioctl(m_fdAudio, SNDCTL_DSP_STEREO, &ioval) == -1) {
+            esyslog("dxr3: unable to set channel count to %d: %m", count);
+        } else {
+            m_audioChannelCount = count;
+        }
     }
 }
 
diff --git a/dxr3syncbuffer.c b/dxr3syncbuffer.c
index 95fdbd2..d5c5ce2 100644
--- a/dxr3syncbuffer.c
+++ b/dxr3syncbuffer.c
@@ -107,7 +107,6 @@ void cFixedLengthFrame::SetPts(uint32_t pts)
 }
 
 // ==================================
-uint32_t cFixedLengthFrame::m_staticAudioChannelCount = 0;
 uint32_t cFixedLengthFrame::m_staticAudioDataRate = 0;
 
 
diff --git a/dxr3syncbuffer.h b/dxr3syncbuffer.h
index 75b19e0..f72b121 100644
--- a/dxr3syncbuffer.h
+++ b/dxr3syncbuffer.h
@@ -50,11 +50,8 @@ public:
     void SetPts(uint32_t pts);
     void SetChannelCount(uint32_t channelCount)
     {
-	if (channelCount != UNKNOWN_CHANNEL_COUNT)
-	    m_staticAudioChannelCount = m_audioChannelCount = channelCount;
-	else
-	    m_audioChannelCount = m_staticAudioChannelCount;
-    };
+	    m_audioChannelCount = channelCount;
+    }
     void SetDataRate(uint32_t dataRate)
     {
 	if (m_audioDataRate != UNKNOWN_DATA_RATE)
@@ -68,10 +65,8 @@ public:
     };
     uint32_t GetChannelCount(void)
     {
-	return ((m_audioChannelCount == m_staticAudioChannelCount ||
-		 !m_staticAudioChannelCount)?
-		m_audioChannelCount : m_staticAudioChannelCount);
-    };
+	return m_audioChannelCount;
+    }
     uint32_t GetDataRate(void)
     {
 	return ((m_audioDataRate == m_staticAudioDataRate ||
@@ -90,7 +85,6 @@ public:
     static void Clear(void)
     {
 	m_staticAudioDataRate = 0;
-	m_staticAudioChannelCount = 0;
     };
 
 protected:
@@ -104,7 +98,6 @@ protected:
     uint32_t m_audioDataRate;
     uint32_t m_videoAspectRatio;
 
-    static uint32_t m_staticAudioChannelCount;
     static uint32_t m_staticAudioDataRate;
 };
 
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