Reworked existing subtitle support (sideloaded, MP4 in and srt out)

lib/subtitles.cpp

@@ -0,0 +1,38 @@
+#include "subtitles.h"
+#include "bitfields.h"
+
+#include "defines.h"
+namespace Subtitle {
+  
+  Packet getSubtitle(DTSC::Packet packet, DTSC::Meta meta) {
+    char * tmp = 0;
+    uint16_t length = 0;
+    unsigned int len;
+
+    Packet output;
+    long int trackId= packet.getTrackId();
+    if(meta.tracks[trackId].codec != "TTXT" && meta.tracks[trackId].codec != "SRT") {
+      //no subtitle track
+      return output;
+    }
+
+    if(packet.hasMember("duration")) {
+      output.duration = packet.getInt("duration");
+    } else {
+      //get parts from meta
+      //calculate duration
+
+    }
+    
+    packet.getString("data", output.subtitle);
+    if(meta.tracks[trackId].codec == "TTXT") {
+      unsigned short size = Bit::btohs(output.subtitle.c_str());
+      output.subtitle = output.subtitle.substr(2,size);
+    }
+
+    return output;
+  } 
+
+
+
+}

lib/subtitles.h

@@ -0,0 +1,15 @@
+#pragma once
+#include <string>
+#include "dtsc.h"
+
+namespace Subtitle {
+ 
+  struct Packet {
+    std::string subtitle;
+    uint64_t duration;
+  };
+
+  Packet getSubtitle(DTSC::Packet packet, DTSC::Meta meta);
+
+}
+