DORIS-1710: Respect the advertised packet size in the CEA708 decoder (#…

…75)

* DORIS-1710: Respect the advertised packet size, otherwise the decoding will fail if the packet has less data as advertised.

* DORIS-1710: Remove TODO

library/extractor/src/main/java/com/google/android/exoplayer2/text/cea/Cea708Decoder.java

@@ -310,7 +310,10 @@ private void processCurrentPacket() {
     // exhausted. On each iteration we process a single service block. If the block has a service
     // number different to the currently selected service, then we skip it and continue with the
     // next service block.
-    captionChannelPacketData.reset(currentDtvCcPacket.packetData, currentDtvCcPacket.currentIndex);
+
+    // Fix for https://dicetech.atlassian.net/browse/DORIS-1710.
+    captionChannelPacketData.reset(currentDtvCcPacket.packetData, (currentDtvCcPacket.packetSize * 2 - 1));
+    //captionChannelPacketData.reset(currentDtvCcPacket.packetData, currentDtvCcPacket.currentIndex);
     while (captionChannelPacketData.bitsLeft() > 0) {
       // Parse the Standard Service Block Header (see CEA-708B 6.2.1)
       int serviceNumber = captionChannelPacketData.readBits(3);