From c0788a90a0d6e047488980a2ad5bb4f9cf108682 Mon Sep 17 00:00:00 2001
From: "Matthias P. Braendli" <matthias.braendli@mpb.li>
Date: Thu, 5 Sep 2019 11:15:58 +0200
Subject: Take BufferManagement setting into account

---
 src/ConfigParser.cpp   | 11 +++++++++++
 src/DabMultiplexer.cpp | 12 ++++++++++--
 src/MuxElements.h      |  9 +++++++++
 3 files changed, 30 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/ConfigParser.cpp b/src/ConfigParser.cpp
index 3142bb3..b1e785a 100644
--- a/src/ConfigParser.cpp
+++ b/src/ConfigParser.cpp
@@ -1021,6 +1021,17 @@ static void setup_subchannel_from_ptree(shared_ptr<DabSubchannel>& subchan,
         }
     }
 
+    const string bufferManagement = pt.get("buffer-management", "prebuffering");
+    if (bufferManagement == "prebuffering") {
+        subchan->bufferManagement = BufferManagement::Prebuffering;
+    }
+    else if (bufferManagement == "timestamped") {
+        subchan->bufferManagement = BufferManagement::Timestamped;
+    }
+    else {
+        throw runtime_error("Subchannel with uid " + subchanuid + " has invalid buffer-management !");
+    }
+
     subchan->startAddress = 0;
 
     dabProtection* protection = &subchan->protection;
diff --git a/src/DabMultiplexer.cpp b/src/DabMultiplexer.cpp
index 498e9e0..6b887bd 100644
--- a/src/DabMultiplexer.cpp
+++ b/src/DabMultiplexer.cpp
@@ -581,8 +581,16 @@ void DabMultiplexer::mux_frame(std::vector<std::shared_ptr<DabOutput> >& outputs
         edi::TagESTn& tag = edi_subchannelToTag[subchannel.get()];
 
         int sizeSubchannel = subchannel->getSizeByte();
-        int result = subchannel->input->readFrame(
-                &etiFrame[index], sizeSubchannel);
+        int result = -1;
+        switch (subchannel->bufferManagement) {
+            case BufferManagement::Prebuffering:
+                result = subchannel->input->readFrame(&etiFrame[index], sizeSubchannel);
+                break;
+            case BufferManagement::Timestamped:
+                // no need to check enableTist because we always increment the timestamp
+                result = subchannel->input->readFrame(&etiFrame[index], sizeSubchannel, edi_time + m_tist_offset, timestamp);
+                break;
+        }
 
         if (result < 0) {
             etiLog.log(info,
diff --git a/src/MuxElements.h b/src/MuxElements.h
index ec79fdd..f691093 100644
--- a/src/MuxElements.h
+++ b/src/MuxElements.h
@@ -338,6 +338,14 @@ struct dabProtection {
     };
 };
 
+enum class BufferManagement {
+    // Use a buffer in the input that doesn't consider timestamps
+    Prebuffering,
+
+    // Buffer incoming data until a given timestamp is reached
+    Timestamped,
+};
+
 class DabSubchannel
 {
 public:
@@ -359,6 +367,7 @@ public:
     std::string uid;
 
     std::string inputUri;
+    BufferManagement bufferManagement = BufferManagement::Prebuffering;
     std::shared_ptr<Inputs::InputBase> input;
     unsigned char id = 0;
     subchannel_type_t type = subchannel_type_t::DABAudio;
-- 
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