libavformat/mpegts: expose raw packet size

We cannot easily determine if an mpeg TS's packet size is DVHS, FEC
or so on, for that we need to expose the internal raw_packet_size
field.
Signed-off-by: Leandro Dorileo <leandro.maciel.dorileo@intel.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/mpegts.c

@@ -145,6 +145,8 @@ struct MpegTSContext {
 static const AVOption mpegtsraw_options[] = {
     {"compute_pcr", "Compute exact PCR for each transport stream packet.", offsetof(MpegTSContext, mpeg2ts_compute_pcr), AV_OPT_TYPE_INT,
      {.i64 = 0}, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
+    {"ts_packetsize", "Output option carrying the raw packet size.", offsetof(MpegTSContext, raw_packet_size), AV_OPT_TYPE_INT,
+     {.i64 = 0}, 0, 0, AV_OPT_FLAG_METADATA },
     { NULL },
 };
 
@@ -158,6 +160,8 @@ static const AVClass mpegtsraw_class = {
 static const AVOption mpegts_options[] = {
     {"fix_teletext_pts", "Try to fix pts values of dvb teletext streams.", offsetof(MpegTSContext, fix_teletext_pts), AV_OPT_TYPE_INT,
      {.i64 = 1}, 0, 1, AV_OPT_FLAG_DECODING_PARAM },
+    {"ts_packetsize", "Output option carrying the raw packet size.", offsetof(MpegTSContext, raw_packet_size), AV_OPT_TYPE_INT,
+     {.i64 = 0}, 0, 0, AV_OPT_FLAG_METADATA },
     { NULL },
 };