<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=Content-Type content="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 11 (filtered medium)"> <style>  </style> </head> <body lang=EN-US link=blue vlink=purple> <div class=Section1> To: 'gstreamer-devel@lists.sourceforge.net' Subject: How to overcome the caps limitation of peers during caps negotiation?<o:p></o:p> <o:p> </o:p> <o:p> </o:p> Hello all,<o:p></o:p> <o:p> </o:p> <o:p> </o:p> PROBLEM DESCRIPTION:<o:p></o:p> <o:p> </o:p> I have developed a gstreamer filter (say "wow").<o:p></o:p> <o:p> </o:p> I am trying to play a 6 channel (> 2 channels) wav file with my filter in the pipeline (on Nokia 770) as follows:<o:p></o:p> ------------------------------------------------------------------------------------<o:p></o:p> Gst-launch-0.10 filesrc location=6channel.wav ! wavparse ! wow ! dsppcmsink<o:p></o:p> ------------------------------------------------------------------------------------<o:p></o:p> <o:p> </o:p> But, this fails during caps negotiation due to the fact that dsppcmsink’s sink pad supports only a MAX of 2 channels.<o:p></o:p> <o:p> </o:p> How should I implement my gst_wow_getcaps (GstPad) function to overcome this peer caps limitation?<o:p></o:p> I read in Plug-in writer’s guide section 10.5. about implementating _getcaps() to overcome such limitations and setting order of preferences.<o:p></o:p> But, I need more information and guidelines about how this _getcaps is used by gstreamer during caps negotiation.<o:p></o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> DETAILS OF MY PLUGIN:<o:p></o:p> <o:p> </o:p> <o:p> </o:p> My plugin’s sink and src pads are like this:<o:p></o:p> NOTE: my plugin can take 1 to 6 channels and outputs 2 channels always.<o:p></o:p> <o:p> </o:p> ----------------------------------------------------------------------------------------<o:p></o:p> static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",<o:p></o:p>     GST_PAD_SINK,<o:p></o:p>     GST_PAD_ALWAYS,<o:p></o:p>     GST_STATIC_CAPS (<o:p></o:p>         "audio/x-raw-int, "<o:p></o:p>         "signed = (boolean){ true, false }, "<o:p></o:p>         "width = (int) 16, "<o:p></o:p>         "depth = (int) 16, "<o:p></o:p>         "endianess = (int) 1234, "<o:p></o:p>         "channels = (int) [ 1 , 6 ], "<o:p></o:p>         "rate = (int) { 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000 } "<o:p></o:p>     )<o:p></o:p> );<o:p></o:p> <o:p> </o:p> static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",<o:p></o:p>     GST_PAD_SRC,<o:p></o:p>     GST_PAD_ALWAYS,<o:p></o:p>     GST_STATIC_CAPS (<o:p></o:p>         "audio/x-raw-int, "<o:p></o:p>         "signed = (boolean){ true, false }, "<o:p></o:p>         "width = (int) 16, "<o:p></o:p>         "depth = (int) 16, "<o:p></o:p>         "endianess = (int) 1234, "<o:p></o:p>         "channels = (int) 2, "<o:p></o:p>         "rate = (int) { 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000 } "<o:p></o:p>     )<o:p></o:p> );<o:p></o:p> <o:p> </o:p> -----------------------------------------------------------------------------------------------<o:p></o:p> <o:p> </o:p> <o:p> </o:p> Nokia770-49:~# gst-inspect-0.10 wow<o:p></o:p> Factory Details:<o:p></o:p>   Long name:    <o:p></o:p>   Class:        Filter/Audio<o:p></o:p>   Description:  Enhances stereo content for headphones<o:p></o:p>   Author(s):    Sharath Mudalamane <sharath_m@mindtree.com><o:p></o:p>   Rank:         none (0)<o:p></o:p> <o:p> </o:p> Plugin Details:<o:p></o:p>   Name:                 wow<o:p></o:p>   Description:          Enhances stereo content for mobile device<o:p></o:p>   Filename:             /usr/lib/gstreamer-0.10/libgstwow.so<o:p></o:p>   Version:              0.10.0.1<o:p></o:p>   License:              LGPL<o:p></o:p>   Source module:        gst-plugin<o:p></o:p>   Binary package:       GStreamer<o:p></o:p>   Origin URL:           <o:p></o:p> <o:p> </o:p> GObject<o:p></o:p>  +----GstObject<o:p></o:p>        +----GstElement<o:p></o:p>              +----GstWow<o:p></o:p> <o:p> </o:p> Pad Templates:<o:p></o:p>   SRC template: 'src'<o:p></o:p>     Availability: Always<o:p></o:p>     Capabilities:<o:p></o:p>       audio/x-raw-int<o:p></o:p>                  signed: { true, false }<o:p></o:p>                   width: 16<o:p></o:p>                   depth: 16<o:p></o:p>               endianess: 1234<o:p></o:p>                channels: 2<o:p></o:p>                    rate: { 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000 }<o:p></o:p> <o:p> </o:p>   SINK template: 'sink'<o:p></o:p>     Availability: Always<o:p></o:p>     Capabilities:<o:p></o:p>       audio/x-raw-int<o:p></o:p>                  signed: { true, false }<o:p></o:p>                   width: 16<o:p></o:p>                   depth: 16<o:p></o:p>               endianess: 1234<o:p></o:p>                channels: [ 1, 6 ]<o:p></o:p>                    rate: { 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000 }<o:p></o:p> <o:p> </o:p> <o:p> </o:p> Element Flags:<o:p></o:p>   no flags set<o:p></o:p> <o:p> </o:p> Element Implementation:<o:p></o:p>   No loopfunc(), must be chain-based or not configured yet<o:p></o:p>   Has change_state() function: 0x40040ba1<o:p></o:p>   Has custom save_thyself() function: 0x40040f09<o:p></o:p>   Has custom restore_thyself() function: 0x40041191<o:p></o:p> <o:p> </o:p> Element has no clocking capabilities.<o:p></o:p> Element has no indexing capabilities.<o:p></o:p> <o:p> </o:p> Pads:<o:p></o:p>   SRC: 'src'<o:p></o:p>     Implementation:<o:p></o:p>     Pad Template: 'src'<o:p></o:p>   SINK: 'sink'<o:p></o:p>     Implementation:<o:p></o:p>       Has chainfunc(): 0x4068fde8<o:p></o:p>     Pad Template: 'sink'<o:p></o:p> <o:p> </o:p> Element Properties:<o:p></o:p> <o:p> </o:p> [ not shown ]<o:p></o:p> <o:p> </o:p> Nokia770-49:~#<o:p></o:p> <o:p> </o:p> ----------------------------------------------------------------------------------------<o:p></o:p> <o:p> </o:p> OTHER OBSERVATIONS:<o:p></o:p> <o:p> </o:p> Gst-launch-0.10 filesrc location=6channel.wav ! wavparse ! wow ! dsppcmsink<o:p></o:p> The above pipeline worked for wav files with 1 and 2 channels. It fails (hang up) for 3,4,5,6 channels.<o:p></o:p> <o:p> </o:p> The logs are provided below<o:p></o:p> -----------------------------------------------------------------------------------------------<o:p></o:p> Nokia770-49:/home/user/media_samples# gst-launch-0.10 -m filesrc location=SigAudistry_2ch_48k.wav ! wavparse ! wow ! dsppcmsink<o:p></o:p> Setting pipeline to PAUSED ...<o:p></o:p> Pipeline is PREROLLING ...<o:p></o:p> Got Message from element "dsppcmsink0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_NULL, new-state=(GstState)GST_STATE_READY, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "wow0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_NULL, new-state=(GstState)GST_STATE_READY, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "wavparse0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_NULL, new-state=(GstState)GST_STATE_READY, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "filesrc0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_NULL, new-state=(GstState)GST_STATE_READY, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "pipeline0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_NULL, new-state=(GstState)GST_STATE_READY, pending-state=(GstState)GST_STATE_PAUSED<o:p></o:p> Got Message from element "wow0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_READY, new-state=(GstState)GST_STATE_PAUSED, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "wavparse0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_READY, new-state=(GstState)GST_STATE_PAUSED, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "filesrc0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_READY, new-state=(GstState)GST_STATE_PAUSED, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> <o:p> </o:p>  #[gst_wow_set_caps] called !!... GstPad = <0x50180>, GstCaps = <0x180b0><o:p></o:p>  #[gst_wow_set_caps] Proposed Capabilities by the stream:<o:p></o:p>   [ audio/x-raw-int, endianness=(int)1234, channels=(int)2, width=(int)16, depth=(int)16, signed=(boolean)true, rate=(int)48000 ]<o:p></o:p> Got Message from element "wavparse0" (tag): taglist, audio-codec=(string)"Uncompressed\ 16-bit\ PCM\ audio"<o:p></o:p> Got Message from element "dsppcmsink0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_READY, new-state=(GstState)GST_STATE_PAUSED, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "pipeline0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_READY, new-state=(GstState)GST_STATE_PAUSED, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Pipeline is PREROLLED ...<o:p></o:p> Setting pipeline to PLAYING ...<o:p></o:p> Got Message from element "pipeline0" (new-clock): GstMessageNewClock, clock=(GstClock)(NULL)<o:p></o:p> New clock: GstSystemClock<o:p></o:p> Got Message from element "dsppcmsink0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_PAUSED, new-state=(GstState)GST_STATE_PLAYING, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "wow0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_PAUSED, new-state=(GstState)GST_STATE_PLAYING, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "wavparse0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_PAUSED, new-state=(GstState)GST_STATE_PLAYING, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "filesrc0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_PAUSED, new-state=(GstState)GST_STATE_PLAYING, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "pipeline0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_PAUSED, new-state=(GstState)GST_STATE_PLAYING, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "pipeline0" (eos): no message details<o:p></o:p> Got EOS from element "pipeline0".<o:p></o:p> Execution ended after 2938873000 ns.<o:p></o:p> Setting pipeline to PAUSED ...<o:p></o:p> Setting pipeline to READY ...<o:p></o:p> Setting pipeline to NULL ...<o:p></o:p> FREEING pipeline ...<o:p></o:p> Nokia770-49:/home/user/media_samples#<o:p></o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> Nokia770-49:/home/user/media_samples# gst-launch-0.10 -m filesrc location=SigAudistry_6ch_48k.wav ! wavparse ! wow ! dsppcmsink<o:p></o:p> Setting pipeline to PAUSED ...<o:p></o:p> Pipeline is PREROLLING ...<o:p></o:p> Got Message from element "dsppcmsink0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_NULL, new-state=(GstState)GST_STATE_READY, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "wow0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_NULL, new-state=(GstState)GST_STATE_READY, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "wavparse0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_NULL, new-state=(GstState)GST_STATE_READY, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "filesrc0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_NULL, new-state=(GstState)GST_STATE_READY, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "pipeline0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_NULL, new-state=(GstState)GST_STATE_READY, pending-state=(GstState)GST_STATE_PAUSED<o:p></o:p> Got Message from element "wow0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_READY, new-state=(GstState)GST_STATE_PAUSED, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "wavparse0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_READY, new-state=(GstState)GST_STATE_PAUSED, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "filesrc0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_READY, new-state=(GstState)GST_STATE_PAUSED, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "wavparse0" (tag): taglist, audio-codec=(string)"Uncompressed\ 16-bit\ PCM\ audio"<o:p></o:p> Caught interrupt -- <o:p></o:p> Nokia770-49:/home/user/media_samples# <o:p></o:p> Nokia770-49:/home/user/media_samples# <o:p></o:p> Nokia770-49:/home/user/media_samples# <o:p></o:p> Nokia770-49:/home/user/media_samples# <o:p></o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> Nokia770-49:/home/user/media_samples# gst-launch-0.10 -m filesrc location=SigAudistry_5ch_48k.wav ! wavparse ! wow ! dsppcmsink<o:p></o:p> Setting pipeline to PAUSED ...<o:p></o:p> Pipeline is PREROLLING ...<o:p></o:p> Got Message from element "dsppcmsink0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_NULL, new-state=(GstState)GST_STATE_READY, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "wow0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_NULL, new-state=(GstState)GST_STATE_READY, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "wavparse0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_NULL, new-state=(GstState)GST_STATE_READY, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "filesrc0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_NULL, new-state=(GstState)GST_STATE_READY, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "pipeline0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_NULL, new-state=(GstState)GST_STATE_READY, pending-state=(GstState)GST_STATE_PAUSED<o:p></o:p> Got Message from element "wow0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_READY, new-state=(GstState)GST_STATE_PAUSED, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "wavparse0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_READY, new-state=(GstState)GST_STATE_PAUSED, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "filesrc0" (state-changed): GstMessageState, old-state=(GstState)GST_STATE_READY, new-state=(GstState)GST_STATE_PAUSED, pending-state=(GstState)GST_STATE_VOID_PENDING<o:p></o:p> Got Message from element "wavparse0" (tag): taglist, audio-codec=(string)"Uncompressed\ 16-bit\ PCM\ audio"<o:p></o:p> Caught interrupt -- <o:p></o:p> Nokia770-49:/home/user/media_samples# <o:p></o:p> <o:p> </o:p>             <o:p></o:p> -----------------------------------------------------------------------------------------------<o:p></o:p> <o:p> </o:p> (2)<o:p></o:p> <o:p> </o:p> Also I tried writing a typical hello world program to check capabilities during negotiation. I have collected the capabilities of my filter wow during the linking of the wavparse dynamic pad (sinkpad) and my filter’s static source pad in the callback function. Below is my observation:<o:p></o:p> <o:p> </o:p> FOR 6CHANNEL: the gst_pad_link () fails and also I observed the filter’s capabilities limited to 2 channels.<o:p></o:p> ----------------------------------------------------------<o:p></o:p> Nokia770-49:/home/user/bin# ./wav_hell01 ../media_samples/SigAudistry_6ch_48k.wav  <o:p></o:p> <o:p> </o:p> [main()] Calling ... gst_init() <o:p></o:p> <o:p> </o:p> [main()] AFTER Calling... gst_init()<o:p></o:p> <o:p> </o:p> [main()] Calling... factory_make( wow)<o:p></o:p> <o:p> </o:p> [main()] AFTER Calling... factory_make( wow) handle = <358504><o:p></o:p> <o:p> </o:p> [main()] Adding wow to the pipeline BIN<o:p></o:p> <o:p> </o:p> [main()] AFTER   Adding wow to the pipeline BIN<o:p></o:p> <o:p> </o:p> <o:p> </o:p> [main()] Setting to PLAYING<o:p></o:p> <o:p> </o:p> <o:p> </o:p> [main()] Running<o:p></o:p> <o:p> </o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <1> new <2> pending <0><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <1> new <2> pending <0><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <1> new <2> pending <0><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <1> new <2> pending <0><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <1> new <2> pending <4><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <2> new <3> pending <0><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <2> new <3> pending <0><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <2> new <3> pending <0><o:p></o:p> <o:p> </o:p>  [new_pad()] The Capabilities of dynamic pad of wavparse:<o:p></o:p>  [ audio/x-raw-int, endianness=(int)1234, channels=(int)6, width=(int)16, depth=(int)16, signed=(boolean)true, channel-positions=(GstAudioChannelPosition)< GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT, GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT, GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER, GST_AUDIO_CHANNEL_POSITION_LFE, GST_AUDIO_CHANNEL_POSITION_REAR_LEFT, GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT >, rate=(int)48000 ]<o:p></o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p>  [new_pad()] The Caps of sinkPad of wow filter:<o:p></o:p>  [ audio/x-raw-int, endianness=(int)1234, signed=(boolean){ true, false }, width=(int)16, depth=(int)16, rate=(int){ 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000 }, channels=(int)[ 1, 2 ], endianess=(int)1234 ]<o:p></o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> [new_pad()] Dynamic pad created, linking parser-filter<o:p></o:p> <o:p> </o:p> <o:p> </o:p> [NEW_PAD()] gst_pad_link() returns [-4]<o:p></o:p> <o:p> </o:p> Nokia770-49:/home/user/bin# <o:p></o:p> <o:p> </o:p> -------------------------------------------------------<o:p></o:p> <o:p> </o:p> FOR 2 CHANNEL:<o:p></o:p> --------------------------------------------------------<o:p></o:p> Nokia770-49:/home/user/bin# ./wav_hell01 ../media_samples/SigAudistry_2ch_48k.wav <o:p></o:p> <o:p> </o:p> [main()] Calling ... gst_init() <o:p></o:p> <o:p> </o:p> [main()] AFTER Calling... gst_init()<o:p></o:p> <o:p> </o:p> [main()] Calling... factory_make( wow)<o:p></o:p> <o:p> </o:p> [main()] AFTER Calling... factory_make( wow) handle = <358504><o:p></o:p> <o:p> </o:p> [main()] Adding wow to the pipeline BIN<o:p></o:p> <o:p> </o:p> [main()] AFTER   Adding wow to the pipeline BIN<o:p></o:p> <o:p> </o:p> <o:p> </o:p> [main()] Setting to PLAYING<o:p></o:p> <o:p> </o:p> <o:p> </o:p> [main()] Running<o:p></o:p> <o:p> </o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <1> new <2> pending <0><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <1> new <2> pending <0><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <1> new <2> pending <0><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <1> new <2> pending <0><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <1> new <2> pending <4><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <2> new <3> pending <0><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <2> new <3> pending <0><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <2> new <3> pending <0><o:p></o:p> <o:p> </o:p>  [new_pad()] The Capabilities of dynamic pad of wavparse:<o:p></o:p>  [ audio/x-raw-int, endianness=(int)1234, channels=(int)2, width=(int)16, depth=(int)16, signed=(boolean)true, rate=(int)48000 ]<o:p></o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p>  [new_pad()] The Caps of sinkPad of wow filter:<o:p></o:p>  [ audio/x-raw-int, endianness=(int)1234, signed=(boolean){ true, false }, width=(int)16, depth=(int)16, rate=(int){ 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000 }, channels=(int)[ 1, 2 ], endianess=(int)1234 ]<o:p></o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> [new_pad()] Dynamic pad created, linking parser-filter<o:p></o:p> <o:p> </o:p> <o:p> </o:p> [NEW_PAD()] gst_pad_link() returns [0]<o:p></o:p> <o:p> </o:p>  #[gst_wow_set_caps] called !!... GstPad = <0x511c0>, GstCaps = <0x65fd0><o:p></o:p>  #[gst_wow_set_caps] Proposed Capabilities by the stream:<o:p></o:p>   [ audio/x-raw-int, endianness=(int)1234, channels=(int)2, width=(int)16, depth=(int)16, signed=(boolean)true, rate=(int)48000 ]<o:p></o:p> <o:p> </o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <2> new <3> pending <0><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <2> new <3> pending <4><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <3> new <4> pending <0><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <3> new <4> pending <0><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <3> new <4> pending <0><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <3> new <4> pending <0><o:p></o:p>  [GST_MESSAGE_STATE_CHANGED] recvd! old <3> new <4> pending <0><o:p></o:p> <o:p> </o:p> [bus_call()] End-of-stream<o:p></o:p> <o:p> </o:p> <o:p> </o:p> [main()] Returned, stopping playback<o:p></o:p> <o:p> </o:p> <o:p> </o:p> [main()] Deleting pipeline ... Here wow will also be de-referenced...!<o:p></o:p> <o:p> </o:p> [main()] AFTER Deleting pipeline ... Here wow will also be de-referenced...!<o:p></o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> <o:p> </o:p> ----------------------------------------------------------------------------------------------<o:p></o:p> <o:p> </o:p> Please provide help.<o:p></o:p> <o:p> </o:p> Thanks and regards,<o:p></o:p> Sharath<o:p></o:p> <o:p> </o:p> </div> DISCLAIMER: This message (including attachment if any) is confidential and may be privileged. If you have received this message by mistake please notify the sender by return e-mail and delete this message from your system. Any unauthorized use or dissemination of this message in whole or in part is strictly prohibited.E-mail may contain viruses. Before opening attachments please check them for viruses and defects. 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