Problem in using omx_mpeg4dec

[Liang Guo]

Hi,
I am using Ubuntu10.10, bellagio-openmax0.9.1 and the newest gst-openmax plugin.

I can use omx_mp3dec decode MP3 files well, but when I try to decode avi or mp4 files with omx_mpeg4dec , it will be stuck. If I change the decoder to ffdec_mpeg, it works well.

So I am confused.

use this command to play avi file:
gst-launch filesrc location=Sometimes.avi ! avidemux name=demux demux.video_00 ! omx_mpeg4dec ! ffmpegcolorspace ! ximagesink demux.audio_00 ! mad ! alsasink

terminal display information like this:
Setting pipeline to PAUSED …
Pipeline is PREROLLING …

and it is stuck here.

If I set bellagio-openmax debug -level to #define DEBUG_LEVEL (DEB_LEV_ERR | DEB_LEV_FULL_SEQ),terminal display like this:

gst-launch filesrc location=Sometimes.avi ! avidemux name=demux demux.video_00 ! omx_mpeg4dec ! ffmpegcolorspace ! ximagesink demux.audio_00 ! mad ! alsasink
OMX-libname: /home/guo/omx/lib/bellagio/libomxvideosrc.so
OMX-In BOSA_ST_InitComponentLoader comp name=OMX.st.video_src
OMX-libname: /home/guo/omx/lib/bellagio/libomxfbdev.so
OMX-In BOSA_ST_InitComponentLoader comp name=OMX.st.fbdev.fbdev_sink
OMX-libname: /home/guo/omx/lib/bellagio/libomxcamera.so
OMX-In BOSA_ST_InitComponentLoader comp name=OMX.st.v4l.camera_source
OMX-libname: /home/guo/omx/lib/bellagio/libomxaudio_effects.so
OMX-In BOSA_ST_InitComponentLoader comp name=OMX.st.volume.component
OMX-In BOSA_ST_InitComponentLoader comp name=OMX.st.audio.mixer
OMX-libname: /home/guo/omx/lib/bellagio/libomxclocksrc.so
OMX-In BOSA_ST_InitComponentLoader comp name=OMX.st.clocksrc
OMX-libname: /home/guo/omx/lib/bellagio/libomxmad.so
OMX-In BOSA_ST_InitComponentLoader comp name=OMX.st.audio_decoder.mp3.mad
OMX-libname: /home/guo/omx/lib/bellagio/libomxparser3gp.so
OMX-In BOSA_ST_InitComponentLoader comp name=OMX.st.parser.3gp
OMX-libname: /home/guo/omx/lib/bellagio/libomxffmpeg.so
OMX-In BOSA_ST_InitComponentLoader comp name=OMX.st.audio_decoder
OMX-In BOSA_ST_InitComponentLoader comp name=OMX.st.video_decoder
OMX-In BOSA_ST_InitComponentLoader comp name=OMX.st.video_colorconv.ffmpeg
OMX-In BOSA_ST_InitComponentLoader comp name=OMX.st.video_encoder
OMX-libname: /home/guo/omx/lib/bellagio/libomxalsa.so
OMX-In BOSA_ST_InitComponentLoader comp name=OMX.st.alsa.alsasink
OMX-In BOSA_ST_InitComponentLoader comp name=OMX.st.alsa.alsasrc
OMX-libname: /home/guo/omx/lib/bellagio/libomxfilereader.so
OMX-In BOSA_ST_InitComponentLoader comp name=OMX.st.audio_filereader
OMX-libname: /home/guo/omx/lib/bellagio/libomximagejpeg.so
OMX-In BOSA_ST_InitComponentLoader comp name=OMX.st.image_decoder.jpeg
OMX-In BOSA_ST_InitComponentLoader comp name=OMX.st.image_encoder.jpeg
OMX-libname: /home/guo/omx/lib/bellagio/libomxvorbis.so
OMX-In BOSA_ST_InitComponentLoader comp name=OMX.st.audio_decoder.ogg.single
OMX-Template OMX.st.video_decoder.mpeg4 found returning from OMX_GetHandle
Setting pipeline to PAUSED …
Pipeline is PREROLLING …
OMX-In omx_base_component_DoStateSet: wait for buffers. port enabled 1,  port populated 0
OMX-In omx_base_component_SendCommand messageSem up param=2
OMX-In omx_base_component_DoStateSet: wait for buffers. port enabled 1,  port populated 0
OMX-running callback in omx_base_component_MessageHandler
OMX-running callback in omx_base_component_MessageHandler
OMX-In omx_base_component_SendCommand messageSem up param=3
OMX-New Buffer FilledLen = 3573
OMX-One output buffer b13bd008 nLen=0 is full returning in video decoder
OMX-Waiting for next input/output buffer
OMX-Waiting for next input/output buffer
OMX-Waiting for next input/output buffer
OMX-Waiting for next input/output buffer

stuck here

Will you please tell why this happened?

Best Regard!
Liang Guo

[Giulio Urlini]

Hi,
         the Bellagio component that implements the ffmpeg video decoding is aligned to an obsolete version of ffmpeg.
It is supposed to be used with a File reader input component and I'm not sure it is used in the gstreamer pipeline.
The update of ffmpeg support is on going on a devoted git branch,

Regards,

Giulio