CODEWITHSUNDEEP
macosvirtualboxosx-mavericksgstreamer
konstantin_doncov
konstantin_doncov

Reputation: 2879

Audio playback using Gstreamer on OS X

I am trying to play mp3 audio on Mac OS X Mavericks(VirtualBox) using these pipelines:

gst-launch-1.0 playbin uri=file:///path/to/test.mp3

gst-launch-1.0 filesrc location=test.mp3 ! decodebin ! audioconvert ! audioresample ! autoaudiosink

gst-launch-1.0 uridecodebin uri=file:///path/to/test.mp3 ! audioconvert ! audioresample ! autoaudiosink

But always get this output:

Setting pipeline to PAUSED ...
0:00:00.032003000 4120 0x7fe62bcd4900 WARN basesrc gstbasesrc.c:3470:void gst_base_src_start_complete(GstBaseSrc *, GstFlowReturn): pad not activated yet 0:00:00.033290000 4120 0x7fe62bcd4900 WARN basesrc gstbasesrc.c:3470:void gst_base_src_start_complete(GstBaseSrc *, GstFlowReturn): pad not activated yet Pipeline is PREROLLING ...
0:00:00.106320000 4120 0x7fe62c032140 WARN osxaudiosink gstosxaudiosink.c:601:gst_osx_audio_sink_allowed_caps: unrecognized channel: -1
0:00:00.106584000 4120 0x7fe62c032140 WARN osxaudiosink gstosxaudiosink.c:601:gst_osx_audio_sink_allowed_caps: unrecognized channel: -1
0:00:00.128755000 4120 0x7fe62c032140 WARN audioresample gstaudioresample.c:1537:gboolean plugin_init(GstPlugin *): Orc disabled, can't benchmark int vs. float resampler
0:00:00.129217000 4120 0x7fe62c032140 WARN GST_PERFORMANCE gstaudioresample.c:1540:gboolean plugin_init(GstPlugin *): orc disabled, no benchmarking done
0:00:00.133383000 4120 0x7fe62c032140 WARN baseparse gstbaseparse.c:3264:void gst_base_parse_loop(GstPad *): error: streaming stopped, reason not-negotiated
0:00:00.133718000 4120 0x7fe62c032140 WARN queue gstqueue.c:860:gboolean gst_queue_handle_sink_event(GstPad *, GstObject *, GstEvent *): error: Internal data flow error.
ERROR: from element /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0/GstMpegAudioParse:mpegaudioparse0: GStreamer encountered a general stream error.
0:00:00.134308000 4120 0x7fe62c032140 WARN queue gstqueue.c:860:gboolean gst_queue_handle_sink_event(GstPad *, GstObject *, GstEvent *): error: streaming task paused, reason not-negotiated (-4)
Additional debug info:
gstbaseparse.c(3264): void gst_base_parse_loop(GstPad *) (): /GstPlayBin:playbin0/GstURIDecodeBin:uridecodebin0/GstDecodeBin:decodebin0/GstMpegAudioParse:mpegaudioparse0: streaming stopped, reason not-negotiated
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...

Identical pipeline works fine on Windows 7 with the same audio.

How I can resolve this issue on Mac OS X Mavericks?

Upvotes: 1

Views: 1874

Answers (1)

Anil_M
Anil_M

Reputation: 11473

A little late to respond, but though would put it in here in case anyone else has same problem.

On mac we need proper pipeline and pipeline elements such as decoder and sink. using autoaudiosink, gstreamer will find sink automatically.
Or you can provide mac specific osxaudiosink.

Try

gst-launch-1.0 filesrc location=test.mp3 ! decodebin ! audioconvert !
audioresample ! autoaudiosink

or 

gst-launch-1.0 uridecodebin uri=file:///path/to/test.mp3 !
audioconvert ! audioresample ! autoaudiosin

Upvotes: 2

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