From 6cede7a667fa0891194efb44a0494992f2cc24d0 Mon Sep 17 00:00:00 2001
From: f4exb <f4exb06@gmail.com>
Date: Tue, 30 Oct 2018 10:02:32 +0100
Subject: [PATCH] SoapySDR support: output: open and close

---
 .../soapysdroutput/soapysdroutput.cpp         | 110 +++++++++++++++++-
 .../soapysdroutput/soapysdroutput.h           |   7 ++
 2 files changed, 115 insertions(+), 2 deletions(-)

diff --git a/plugins/samplesink/soapysdroutput/soapysdroutput.cpp b/plugins/samplesink/soapysdroutput/soapysdroutput.cpp
index 634bf396a..2cbcc484a 100644
--- a/plugins/samplesink/soapysdroutput/soapysdroutput.cpp
+++ b/plugins/samplesink/soapysdroutput/soapysdroutput.cpp
@@ -15,11 +15,18 @@
 ///////////////////////////////////////////////////////////////////////////////////
 
 #include "util/simpleserializer.h"
+#include "dsp/dspcommands.h"
+#include "dsp/dspengine.h"
+#include "device/devicesinkapi.h"
+#include "device/devicesourceapi.h"
+#include "soapysdr/devicesoapysdr.h"
 
 #include "soapysdroutput.h"
 
-SoapySDROutput::SoapySDROutput(DeviceSinkAPI *deviceAPI __attribute__((unused))) :
-    m_deviceDescription("SoapySDROutput")
+SoapySDROutput::SoapySDROutput(DeviceSinkAPI *deviceAPI) :
+    m_deviceAPI(deviceAPI),
+    m_deviceDescription("SoapySDROutput"),
+    m_running(false)
 {
 }
 
@@ -32,6 +39,105 @@ void SoapySDROutput::destroy()
     delete this;
 }
 
+bool SoapySDROutput::openDevice()
+{
+    m_sampleSourceFifo.resize(96000 * 4);
+
+    // look for Tx buddies and get reference to the device object
+    if (m_deviceAPI->getSinkBuddies().size() > 0) // look sink sibling first
+    {
+        qDebug("SoapySDROutput::openDevice: look in Tx buddies");
+
+        DeviceSinkAPI *sinkBuddy = m_deviceAPI->getSinkBuddies()[0];
+        DeviceSoapySDRShared *deviceSoapySDRShared = (DeviceSoapySDRShared*) sinkBuddy->getBuddySharedPtr();
+
+        if (deviceSoapySDRShared == 0)
+        {
+            qCritical("SoapySDROutput::openDevice: the sink buddy shared pointer is null");
+            return false;
+        }
+
+        SoapySDR::Device *device = deviceSoapySDRShared->m_device;
+
+        if (device == 0)
+        {
+            qCritical("SoapySDROutput::openDevice: cannot get device pointer from Tx buddy");
+            return false;
+        }
+
+        m_deviceShared.m_device = device;
+    }
+    // look for Rx buddies and get reference to the device object
+    else if (m_deviceAPI->getSourceBuddies().size() > 0) // then source
+    {
+        qDebug("SoapySDROutput::openDevice: look in Rx buddies");
+
+        DeviceSourceAPI *sourceBuddy = m_deviceAPI->getSourceBuddies()[0];
+        DeviceSoapySDRShared *deviceSoapySDRShared = (DeviceSoapySDRShared*) sourceBuddy->getBuddySharedPtr();
+
+        if (deviceSoapySDRShared == 0)
+        {
+            qCritical("SoapySDROutput::openDevice: the source buddy shared pointer is null");
+            return false;
+        }
+
+        SoapySDR::Device *device = deviceSoapySDRShared->m_device;
+
+        if (device == 0)
+        {
+            qCritical("SoapySDROutput::openDevice: cannot get device pointer from Rx buddy");
+            return false;
+        }
+
+        m_deviceShared.m_device = device;
+    }
+    // There are no buddies then create the first BladeRF2 device
+    else
+    {
+        qDebug("SoapySDROutput::openDevice: open device here");
+        DeviceSoapySDR& deviceSoapySDR = DeviceSoapySDR::instance();
+        m_deviceShared.m_device = deviceSoapySDR.openSoapySDR(m_deviceAPI->getSampleSinkSequence());
+
+        if (!m_deviceShared.m_device)
+        {
+            qCritical("SoapySDROutput::openDevice: cannot open SoapySDR device");
+            return false;
+        }
+    }
+
+    m_deviceShared.m_channel = m_deviceAPI->getItemIndex(); // publicly allocate channel
+    m_deviceShared.m_sink = this;
+    m_deviceAPI->setBuddySharedPtr(&m_deviceShared); // propagate common parameters to API
+    return true;
+}
+
+void SoapySDROutput::closeDevice()
+{
+    if (m_deviceShared.m_device == 0) { // was never open
+        return;
+    }
+
+    if (m_running) {
+        stop();
+    }
+
+//    if (m_thread) { // stills own the thread => transfer to a buddy
+//        moveThreadToBuddy();
+//    }
+
+    m_deviceShared.m_channel = -1; // publicly release channel
+    m_deviceShared.m_sink = 0;
+
+    // No buddies so effectively close the device
+
+    if ((m_deviceAPI->getSinkBuddies().size() == 0) && (m_deviceAPI->getSourceBuddies().size() == 0))
+    {
+        DeviceSoapySDR& deviceSoapySDR = DeviceSoapySDR::instance();
+        deviceSoapySDR.closeSoapySdr(m_deviceShared.m_device);
+        m_deviceShared.m_device = 0;
+    }
+}
+
 void SoapySDROutput::init()
 {
 }
diff --git a/plugins/samplesink/soapysdroutput/soapysdroutput.h b/plugins/samplesink/soapysdroutput/soapysdroutput.h
index 34355171e..f69336414 100644
--- a/plugins/samplesink/soapysdroutput/soapysdroutput.h
+++ b/plugins/samplesink/soapysdroutput/soapysdroutput.h
@@ -20,6 +20,7 @@
 #include <QString>
 
 #include "dsp/devicesamplesink.h"
+#include "soapysdr/devicesoapysdrshared.h"
 
 class DeviceSinkAPI;
 
@@ -45,7 +46,13 @@ public:
     virtual bool handleMessage(const Message& message);
 
 private:
+    DeviceSinkAPI *m_deviceAPI;
     QString m_deviceDescription;
+    DeviceSoapySDRShared m_deviceShared;
+    bool m_running;
+
+    bool openDevice();
+    void closeDevice();
 };