Added singular mode override for inputs

lib/stream.cpp

@@ -244,7 +244,7 @@ bool Util::startInput(std::string streamname, std::string filename, bool forkFir
       FAIL_MSG("Forking process for stream %s failed: %s", streamname.c_str(), strerror(errno));
       return false;
     }
-    if (pid && filename.substr(0, 21) == "push://INTERNAL_ONLY:"){
+    if (pid && overrides.count("singular")){
       Util::Procs::setHandler();
       Util::Procs::remember(pid);
     }

src/input/input.cpp

@@ -13,6 +13,7 @@
 
 namespace Mist {
   Input * Input::singleton = NULL;
+  Util::Config * Input::config = NULL;
 
   void Input::userCallback(char * data, size_t len, unsigned int id) {
     for (int i = 0; i < SIMUL_TRACKS; i++) {
@@ -343,45 +344,53 @@ namespace Mist {
   /// - call getNext() in a loop, buffering packets
   void Input::stream(){
     IPC::semaphore pullLock;
-    pullLock.open(std::string("/MstPull_" + streamName).c_str(), O_CREAT | O_RDWR, ACCESSPERMS, 1);
-    if (!pullLock){
-      FAIL_MSG("Could not open pull lock for stream '%s' - aborting!", streamName.c_str());
-      return;
-    }
-    if (!pullLock.tryWait()){
-      WARN_MSG("A pull process for stream %s is already running", streamName.c_str());
-      pullLock.close();
-      return;
+    if(isSingular()){
+      pullLock.open(std::string("/MstPull_" + streamName).c_str(), O_CREAT | O_RDWR, ACCESSPERMS, 1);
+      if (!pullLock){
+        FAIL_MSG("Could not open pull lock for stream '%s' - aborting!", streamName.c_str());
+        return;
+      }
+      
+      if (!pullLock.tryWait()){
+        WARN_MSG("A pull process for stream %s is already running", streamName.c_str());
+        pullLock.close();
+        return;
+      }
+
+      if (Util::streamAlive(streamName)){
+        pullLock.post();
+        pullLock.close();
+        pullLock.unlink();
+        WARN_MSG("Stream already online, cancelling");
+        return;
+      }
     }
 
-    if (Util::streamAlive(streamName)){
-      pullLock.post();
-      pullLock.close();
-      pullLock.unlink();
-      WARN_MSG("Stream already online, cancelling");
-      return;
-    }
     std::map<std::string, std::string> overrides;
     overrides["throughboot"] = "";
+    if(isSingular()){
+      overrides["singular"] = "";
+    }
+
     if (!Util::startInput(streamName, "push://INTERNAL_ONLY:"+config->getString("input"), true, true, overrides)) {//manually override stream url to start the buffer
-      pullLock.post();
-      pullLock.close();
-      pullLock.unlink();
+      if(isSingular()){
+        pullLock.post();
+        pullLock.close();
+        pullLock.unlink();
+      }
       WARN_MSG("Could not start buffer, cancelling");
       return;
     }
 
-    char userPageName[NAME_BUFFER_SIZE];
-    snprintf(userPageName, NAME_BUFFER_SIZE, SHM_USERS, streamName.c_str());
-    nProxy.userClient = IPC::sharedClient(userPageName, PLAY_EX_SIZE, true);
-    nProxy.userClient.countAsViewer = false;
    
     INFO_MSG("Input for stream %s started", streamName.c_str());
 
     if (!openStreamSource()){
       FAIL_MSG("Unable to connect to source");
-      pullLock.post();
-      pullLock.close();
+      if(isSingular()){
+        pullLock.post();
+        pullLock.close();
+      }
       return;
     }
     parseStreamHeader();
@@ -389,12 +398,18 @@ namespace Mist {
     if (myMeta.tracks.size() == 0){
       nProxy.userClient.finish();
       finish();
-      pullLock.post();
-      pullLock.close();
-      pullLock.unlink();
+      if(isSingular()){
+        pullLock.post();
+        pullLock.close();
+        pullLock.unlink();
+      }
       INFO_MSG("No tracks found, cancelling");
       return;
     }
+
+    char userPageName[NAME_BUFFER_SIZE];
+    snprintf(userPageName, NAME_BUFFER_SIZE, SHM_USERS, streamName.c_str());
+    nProxy.userClient = IPC::sharedClient(userPageName, PLAY_EX_SIZE, true);
     nProxy.userClient.countAsViewer = false;
 
     for (std::map<unsigned int, DTSC::Track>::iterator it = myMeta.tracks.begin(); it != myMeta.tracks.end(); it++){
@@ -409,9 +424,11 @@ namespace Mist {
 
     nProxy.userClient.finish();
     finish();
-    pullLock.post();
-    pullLock.close();
-    pullLock.unlink();
+    if(isSingular()){
+      pullLock.post();
+      pullLock.close();
+      pullLock.unlink();
+    }
     INFO_MSG("Stream input %s closing clean; reason: %s", streamName.c_str(), reason.c_str());
     return;
   }

src/input/input.h

@@ -25,12 +25,16 @@ namespace Mist {
       virtual ~Input() {};
 
       virtual bool needsLock(){return true;}
+
+      static Util::Config * config;
+
     protected:
       static void callbackWrapper(char * data, size_t len, unsigned int id);
       virtual bool checkArguments() = 0;
       virtual bool readHeader() = 0;
       virtual bool needHeader(){return !readExistingHeader();}
       virtual bool preRun(){return true;}
+      virtual bool isSingular(){return true;}
       virtual bool readExistingHeader();
       virtual bool atKeyFrame();
       virtual void getNext(bool smart = true) {}

src/io.cpp

@@ -7,7 +7,6 @@
 #include "io.h"
 
 namespace Mist {
-  Util::Config * InOutBase::config = NULL;
   ///Opens a shared memory page for the stream metadata.
   ///
   ///Assumes myMeta contains the metadata to write.

src/io.h

@@ -78,7 +78,6 @@ namespace Mist {
 
 
       bool standAlone;
-      static Util::Config * config;
 
       negotiationProxy nProxy;
 

src/output/output.cpp

@@ -16,6 +16,7 @@
 
 namespace Mist{
   JSON::Value Output::capa = JSON::Value();
+  Util::Config * Output::config = NULL;
 
   int getDTSCLen(char * mapped, long long int offset){
     return Bit::btohl(mapped + offset + 4);

src/output/output.h

@@ -74,6 +74,7 @@ namespace Mist {
       virtual void sendHeader();
       virtual void onFail();
       virtual void requestHandler();
+      static Util::Config * config;
     private://these *should* not be messed with in child classes.
       std::map<unsigned long, unsigned int> currKeyOpen;
       void loadPageForKey(long unsigned int trackId, long long int keyNum);