Fix #832 by saving/restoring the decoder stack without settings

[pulseview.git] / pv / data / decodesignal.cpp

diff --git a/pv/data/decodesignal.cpp b/pv/data/decodesignal.cpp
index be2ed1616d1bdbed47c4eeb604028ca654f1bfc7..4a9c139bb039a90627960d35c6a24a4f64ae7b3f 100644 (file)
--- a/pv/data/decodesignal.cpp
+++ b/pv/data/decodesignal.cpp
@@ -77,7 +77,7 @@ const vector< shared_ptr<Decoder> >& DecodeSignal::decoder_stack() const
        return stack_;
 }
 
-void DecodeSignal::stack_decoder(srd_decoder *decoder)
+void DecodeSignal::stack_decoder(const srd_decoder *decoder)
 {
        assert(decoder);
        stack_.push_back(make_shared<decode::Decoder>(decoder));
@@ -413,14 +413,51 @@ void DecodeSignal::save_settings(QSettings &settings) const
 {
        SignalBase::save_settings(settings);
 
-       // TODO Save decoder stack, channel mapping and decoder options
+       settings.setValue("decoders", (int)(stack_.size()));
+
+       int decoder_idx = 0;
+       for (shared_ptr<decode::Decoder> decoder : stack_) {
+               settings.beginGroup("decoder" + QString::number(decoder_idx++));
+
+               settings.setValue("id", decoder->decoder()->id);
+
+               settings.endGroup();
+       }
+
+       // TODO Save channel mapping and decoder options
 }
 
 void DecodeSignal::restore_settings(QSettings &settings)
 {
        SignalBase::restore_settings(settings);
 
-       // TODO Restore decoder stack, channel mapping and decoder options
+       GSList *dec_list = g_slist_copy((GSList*)srd_decoder_list());
+
+       int decoders = settings.value("decoders").toInt();
+
+       for (int decoder_idx = 0; decoder_idx < decoders; decoder_idx++) {
+               settings.beginGroup("decoder" + QString::number(decoder_idx));
+
+               QString id = settings.value("id").toString();
+
+               for (GSList *entry = dec_list; entry; entry = entry->next) {
+                       const srd_decoder *dec = (srd_decoder*)entry->data;
+                       if (!dec)
+                               continue;
+
+                       if (QString::fromUtf8(dec->id) == id) {
+                               stack_.push_back(make_shared<decode::Decoder>(dec));
+
+                               // Include the newly created decode channels in the channel lists
+                               update_channel_list();
+                               break;
+                       }
+               }
+
+               settings.endGroup();
+       }
+
+       // TODO Restore channel mapping and decoder options
 }
 
 void DecodeSignal::update_channel_list()