Open FCD.

plugins/samplesource/fcd/fcdsource.cpp

@@ -0,0 +1,48 @@
+/* (C)2015 John Greb
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public Licence version 3.
+ */
+
+#include "fcdthread.h"
+
+bool FCDThread::OpenSource(const char* cardname)
+{
+	//fcd_rate = FCDPP_RATE;
+	//fcd_channels =2;
+	//fcd_format = SND_PCM_SFMT_U16_LE;
+	fcd_stream = SND_PCM_STREAM_PLAYBACK;
+
+	if (fcd_handle)
+		return false;
+	if ( snd_pcm_open( &fcd_handle, cardname, fcd_stream, 1 ) < 0 )
+		return false;
+
+	return true;
+}
+
+void FCDThread::CloseSource()
+{
+	if (fcd_handle)
+		snd_pcm_close( fcd_handle );
+	fcd_handle = NULL;
+}
+
+void FCDThread::set_center_freq(double freq)
+{
+	//TODO
+}
+
+void FCDThread::work(int n_items)
+{
+	int l;
+	SampleVector::iterator it;
+	void *out;
+
+	it = m_convertBuffer.begin();
+	out = (void *)&it[0];
+	l = snd_pcm_readi(fcd_handle, out, (snd_pcm_uframes_t)n_items);
+	if (l > 0)
+		m_sampleFifo->write(it, it + l);
+}
+
+