Multimedia codecs (SBC-i.MX51)
1 Basic libraries
- i.MX specific libraries for VPU, IPU, etc.
- Firmware for the VPU
2 Codec libraries
- Libraries for all hardware de-/encoders
3 GStreamer support
A plug-in for the GStreamer framework (see here for the Wikipedia overview) allows for playing multimedia files using the i.MX hardware codecs.
- Freescale GStreamer plug-in
In addition to the GStreamer plug-in, there are also patches applied to the GStreamer core.
3.1 Command-line usage
The gst-fsl-plugin comes with a command-line player that is called gplay. Simply supply the multimedia file as an argument to gplay. For more information, please have a look at the "Application Specification for gplay" document provided by Freescale at .
There's even a more low-level interface that can be used: gst-launch. Here is an example:
gst-launch filesrc location=avatar.mov ! qtdemux ! queue max-size-time=0 ! mfw_vpudecoder ! mfw_v4lsink disp-width=1024 disp-height=768
For more information, please refer to the "i.MX Linux Multimedia Framework User's Guide" available from Freescale at .
3.2 Media player
The SBC Gnome demo image comes with the Totem media player. Totem exclusively uses GStreamer to play multimedia files (audio and video).
To start Totem, navigate to Applications-->Sound & Video-->Movie Player in the Gnome menu.
If you are interested in which codecs are used in the background, start Totem from a Gnome terminal. Start playing any file and you can view a similar output in the terminal (look for the colored lines):
root@sbc-imx51:~# totem MFW_GST_V4LSINK_PLUGIN 1.9.0 build on Oct 7 2010 23:14:53. [INFO] Product Info: i.MX51 VPU Version: firmware 13.4.0; libvpu: 5.1.0 MFW_GST_VPU_DECODER_PLUGIN 1.9.0 build on Oct 7 2010 23:14:32. BLN_MAD-MMCODECS_AACD_ARM_03.05.00 build on Nov 25 2009 15:02:24. MFW_GST_AAC_PLUGIN 1.9.0 build on Oct 7 2010 23:14:15. >>V4L_SINK: Actually buffer status: hardware buffer : 14 software buffer : 0 [V4L Update Display]: left=5, top=202, width=440, height=184 Total rendered:3192 >>VPU_DEC: State: Ready to Null >>V4L_SINK: All buffer freed, close device. root@sbc-imx51:~#