[Bug 703913] New: LPCM audio is being ignored in mpeg ts file(tsdemux or mpegtsdemux)

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=703913
  GStreamer | gst-plugins-bad | 1.x

           Summary: LPCM audio is being ignored in mpeg ts file(tsdemux or
                    mpegtsdemux)
    Classification: Platform
           Product: GStreamer
           Version: 1.x
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: critical
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: shiva.mudugal at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Summary:

 * Bad: LPCM audio is ignored in tsdemux plugin.

Description:

   Overview:
I am trying to play a mpeg ts file with h264 video and lcpm audio in it. But
"mpegtsdemux" is ignoring the audio and source pad is created only for video. I
added logs in "mpegtsdemux and tsdemux" and printed stream_id and stream_type
for the same. It is stream_id=0xbd and stream_type=0x83.  

I saw in the tsdemux and mpegtsdemux source code that stream_type=0x83 is
mapped to ST_BD_AUDIO_AC3_TRUE_HD and is not handled. But vlc is recognizing it
as DVD lpcm audio. 


I used "dvbsnoop" ubuntu utility to analyze the stream. Below is what it says
about audio section.(for one of the ts packets)

Sync-Byte 0x47: 71 (0x47)
Transport_error_indicator: 0 (0x00)  [= packet ok]
Payload_unit_start_indicator: 1 (0x01)  [= Packet data starts]
transport_priority: 0 (0x00)
PID: 68 (0x0044)  [= ]
transport_scrambling_control: 0 (0x00)  [= No scrambling of TS packet payload]
adaptation_field_control: 1 (0x01)  [= no adaptation_field, payload only]
continuity_counter: 0 (0x00)  [= (sequence ok)]
Payload: (len: 184)
     ==> PES-stream: 189 (0xbd)  [= private_stream_1] 

But "mpegtsdemux and tsdemux" src pad claims the it can candle
"audio/x-private-ts-lpcm" and "audio/x-lpcm".


  SRC template: 'audio_%04x'
    Availability: Sometimes
    Capabilities:
      audio/mpeg
            mpegversion: 1
      audio/mpeg
            mpegversion: 4
          stream-format: adts
      audio/x-lpcm
                  width: { 16, 20, 24 }
                   rate: { 48000, 96000 }
               channels: [ 1, 8 ]
          dynamic_range: [ 0, 255 ]
               emphasis: { false, true }
                   mute: { false, true }
      audio/x-ac3
      audio/x-eac3
      audio/x-dts
      audio/x-private-ts-lpcm

I am using 0.10.22.3 version of gstreamer bad plugings but the issue is seen in
1.x also.

Steps to Reproduce:

Actual Results: 

  Only video pad is created and audio is ignored.

Expected Results:

  It should handle both audio(LPCM) and video as src pad capability says.

Platform:

  On ubuntu 12.04

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