mpegtsdemux: Add more flag debugging for PES and TS packets

Helps with debugging issues. And also remove unused variable (opcr)

This will also allow us in the future to properly detect:
* random-access location (to enable keyframe observation and
  potentially seeking
* discont location (to properly handle resets)
* splice location (to properly handle new stream changes)

gst/mpegtsdemux/mpegtspacketizer.c

@@ -406,6 +406,16 @@ mpegts_packetizer_parse_adaptation_field_control (MpegTSPacketizer2 *
 
   afcflags = packet->afc_flags = *data++;
 
+  GST_DEBUG ("flags: %s%s%s%s%s%s%s%s%s",
+      afcflags & 0x80 ? "discontinuity " : "",
+      afcflags & 0x40 ? "random_access " : "",
+      afcflags & 0x20 ? "elementary_stream_priority " : "",
+      afcflags & 0x10 ? "PCR " : "",
+      afcflags & 0x08 ? "OPCR " : "",
+      afcflags & 0x04 ? "splicing_point " : "",
+      afcflags & 0x02 ? "transport_private_data " : "",
+      afcflags & 0x01 ? "extension " : "", afcflags == 0x00 ? "<none>" : "");
+
   /* PCR */
   if (afcflags & MPEGTS_AFC_PCR_FLAG) {
     MpegTSPCR *pcrtable = NULL;
@@ -426,15 +436,41 @@ mpegts_packetizer_parse_adaptation_field_control (MpegTSPacketizer2 *
       record_pcr (packetizer, pcrtable, packet->pcr, packet->offset);
     }
   }
-
+#ifndef GST_DISABLE_GST_DEBUG
   /* OPCR */
   if (afcflags & MPEGTS_AFC_OPCR_FLAG) {
-    packet->opcr = mpegts_packetizer_compute_pcr (data);
+    /* Note: We don't use/need opcr for the time being */
-    /* *data += 6; */
+    guint64 opcr = mpegts_packetizer_compute_pcr (data);
+    data += 6;
     GST_DEBUG ("opcr %" G_GUINT64_FORMAT " (%" GST_TIME_FORMAT ")",
-        packet->pcr, GST_TIME_ARGS (PCRTIME_TO_GSTTIME (packet->pcr)));
+        opcr, GST_TIME_ARGS (PCRTIME_TO_GSTTIME (opcr)));
   }
 
+  if (afcflags & MPEGTS_AFC_SPLICING_POINT_FLAG) {
+    GST_DEBUG ("splice_countdown: %u", *data++);
+  }
+
+  if (afcflags & MPEGTS_AFC_TRANSPORT_PRIVATE_DATA_FLAG) {
+    guint8 len = *data++;
+    GST_MEMDUMP ("private data", data, len);
+    data += len;
+  }
+
+  if (afcflags & MPEGTS_AFC_EXTENSION_FLAG) {
+    guint8 extlen = *data++;
+    guint8 flags = *data++;
+    GST_DEBUG ("extension size:%d flags : %s%s%s", extlen,
+        flags & 0x80 ? "ltw " : "",
+        flags & 0x40 ? "piecewise_rate " : "",
+        flags & 0x20 ? "seamless_splice " : "");
+    if (flags & 0x80) {
+      GST_DEBUG ("legal time window: valid_flag:%d offset:%d", *data >> 7,
+          GST_READ_UINT16_BE (data) & 0x7fff);
+      data += 2;
+    }
+  }
+#endif
+
   return TRUE;
 }
 

gst/mpegtsdemux/mpegtspacketizer.h

@@ -39,8 +39,11 @@
 #define MPEGTS_MIN_PACKETSIZE MPEGTS_NORMAL_PACKETSIZE
 #define MPEGTS_MAX_PACKETSIZE MPEGTS_ATSC_PACKETSIZE
 
-#define MPEGTS_AFC_PCR_FLAG	0x10
+#define MPEGTS_AFC_PCR_FLAG	                0x10
-#define MPEGTS_AFC_OPCR_FLAG	0x08
+#define MPEGTS_AFC_OPCR_FLAG	                0x08
+#define MPEGTS_AFC_SPLICING_POINT_FLAG	        0x04
+#define MPEGTS_AFC_TRANSPORT_PRIVATE_DATA_FLAG	0x02
+#define MPEGTS_AFC_EXTENSION_FLAG	        0x01
 
 #define MAX_WINDOW 512
 
@@ -131,7 +134,6 @@ typedef struct
 
   guint8  afc_flags;
   guint64 pcr;
-  guint64 opcr;
   guint64 offset;
 } MpegTSPacketizerPacket;
 

gst/mpegtsdemux/pesparse.c

@@ -113,6 +113,11 @@ mpegts_parse_pes_header (const guint8 * data, gsize length, PESHeader * res,
   res->flags = val8 & 0xf;
 
   GST_LOG ("scrambling_control 0x%0x", res->scrambling_control);
+  GST_LOG ("flags_1: %s%s%s%s%s",
+      val8 & 0x08 ? "priority " : "",
+      val8 & 0x04 ? "data_alignment " : "",
+      val8 & 0x02 ? "copyright " : "",
+      val8 & 0x01 ? "original_or_copy " : "", val8 & 0x0f ? "" : "<none>");
 
   /* PTS_DTS_flags                    2
    * ESCR_flag                        1
@@ -122,7 +127,15 @@ mpegts_parse_pes_header (const guint8 * data, gsize length, PESHeader * res,
    * PES_CRC_flag                     1
    * PES_extension_flag               1*/
   flags = *data++;
-  GST_DEBUG ("PES_flag 0x%02x", flags);
+  GST_LOG ("flags_2: %s%s%s%s%s%s%s%s%s",
+      flags & 0x80 ? "PTS " : "",
+      flags & 0x40 ? "DTS " : "",
+      flags & 0x20 ? "ESCR" : "",
+      flags & 0x10 ? "ES_rate " : "",
+      flags & 0x08 ? "DSM_trick_mode " : "",
+      flags & 0x04 ? "additional_copy_info " : "",
+      flags & 0x02 ? "CRC " : "",
+      flags & 0x01 ? "extension " : "", flags ? "" : "<none>");
 
   /* PES_header_data_length           8 */
   res->header_size = *data++;