Prioritize hardware decoder for playbin2

[Jim]

Hi Tim,
Here's the output of gst-inspect for the hardware decoder. I missed it
before but I now see it has a rank of GST_RANK_PRIMARY+1, which I would
assume is high enough to be selected, but from what you said, it sounds like
there's more to it than just the rank.

Factory Details:
  Long name:	VPU-based video decoder
  Class:	Codec/Decoder/Video
  Description:	Decode compressed video to raw data by using VPU
  Author(s):	Multimedia Team <shmmmw at freescale.com>
  Rank:		primary + 1 (257)

Plugin Details:
  Name:			vpu.imx
  Description:		VPU-based video codec
  Filename:		/usr/lib/gstreamer-0.10/libmfw_vpu.so
  Version:		3.0.1
  License:		LGPL
  Source module:	gst-fsl-plugins
  Binary package:	Freescle Gstreamer Multimedia Plugins
  Origin URL:		http://www.freescale.com

GObject
 +----GstObject
       +----GstElement
             +----GstVpuDec

Pad Templates:
  SINK template: 'sink'
    Availability: Always
    Capabilities:
      video/mpeg
            mpegversion: 4
      video/x-h264
      video/x-h263
      video/mpeg
           systemstream: false
            mpegversion: { 1, 2 }
      video/x-wmv
             wmvversion: 3
                 format: WVC1
      video/x-wmv
             wmvversion: 3
      video/x-xvid
      video/x-vp8
      image/jpeg

  SRC template: 'src'
    Availability: Always
    Capabilities:
      video/x-raw-yuv
                 format: NV12
      video/x-raw-yuv
                 format: I420
      video/x-raw-yuv
                 format: YV12
      video/x-raw-yuv
                 format: TNVP
      video/x-raw-yuv
                 format: TNVF


Element Flags:
  no flags set

Element Implementation:
  Has change_state() function: gst_vpudec_state_change
  Has custom save_thyself() function: gst_element_save_thyself
  Has custom restore_thyself() function: gst_element_restore_thyself

Element has no clocking capabilities.
Element has no indexing capabilities.
Element has no URI handling capabilities.

Pads:
  SRC: 'src'
    Implementation:
      Has custom eventfunc(): gst_vpudec_src_event
      Has custom queryfunc(): gst_pad_query_default
      Has custom iterintlinkfunc(): gst_pad_iterate_internal_links_default
      Has getcapsfunc(): gst_pad_get_fixed_caps_func
      Has acceptcapsfunc(): gst_pad_acceptcaps_default
    Pad Template: 'src'
  SINK: 'sink'
    Implementation:
      Has chainfunc(): gst_vpudec_chain
      Has custom eventfunc(): gst_vpudec_sink_event
      Has custom queryfunc(): gst_pad_query_default
      Has custom iterintlinkfunc(): gst_pad_iterate_internal_links_default
      Has setcapsfunc(): gst_vpudec_setcaps
      Has acceptcapsfunc(): gst_pad_acceptcaps_default
    Pad Template: 'sink'

Element Properties:
  name                : The name of the object
                        flags: readable, writable
                        String. Default: "vpudec0"
  low-latency         : set low latency mode enable/disable for streaming
case
                        flags: readable, writable
                        Boolean. Default: false
  framerate-nu        : set framerate numerator
                        flags: readable, writable
                        Integer. Range: 1 - 2147483647 Default: 30 
  framerate-de        : set framerate denominator
                        flags: readable, writable
                        Integer. Range: 1 - 2147483647 Default: 1 
  framedrop           : enable adaptive frame drop for smoothly playback
                        flags: readable, writable
                        Boolean. Default: true
  frame-plus          : set number of addtional frames for smoothly playback
                        flags: readable, writable
                        Integer. Range: 1 - 2147483647 Default: 6 
  output-format       : set raw format for output
                        flags: readable, writable
                        Enum "vpudec_outputformat" Default: 0, "auto"
                           (0): auto             - auto
                           (1): i420             - I420
                           (2): yv12             - YV12
                           (3): nv12             - NV12
                           (4): tile             - tiled format
                           (5): tilefield        - tiled field format
  framedrop-level-mask: set enable mask for drop policy 0x100: drop B/P
frame; 0x200: drop B frame; 0xff mask of frame not display
                        flags: readable, writable
                        Unsigned Integer. Range: 0 - 1023 Default: 1023 
  experimental-tsm    : enable/disable experimental timestamp algorithm
                        flags: readable, writable
                        Boolean. Default: true
  profile             : enable profile on vpudec
                        flags: readable, writable
                        Boolean. Default: false


Thanks,
Jim

-----Original Message-----
From:
gstreamer-devel-bounces+restlessmindsstudio=gmail.com at lists.freedesktop.org
[mailto:gstreamer-devel-bounces+restlessmindsstudio=gmail.com at lists.freedesk
top.org] On Behalf Of Tim-Philipp Müller
Sent: Tuesday, February 19, 2013 10:49 AM
To: gstreamer-devel at lists.freedesktop.org
Subject: Re: Prioritize hardware decoder for playbin2

On Tue, 2013-02-19 at 10:39 -0700, Jim wrote:

Hi,

> Thanks for the reply. I was able to set the rank using the functions 
> you listed. But even after setting the rank to GST_RANK_PRIMARY + 2, 
> playbin2 is still not using the hardware decoder. I guess I'll have to 
> keep poking around.

There are more things that need to be set right.

The element factory class needs to have the right tags in it, and the
template caps need to be correct.

Perhaps you could paste the output of gst-inspect $yourdecoder ?
(removing any specifics/names from the output if necessary).

Cheers
 -Tim

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