A media file demultiplexer, which extracts raw codec frames from a
media file. It extracts audio, video and text data, reading directly
from a file. All output ports require setting port streams, since the
file may contain multiple streams on any domain. This component
supports metadata extraction using standard OpenMAX IL metadata
interfaces, see \autoref{sec:metadata} for a description of how
metadata extraction is used. It also supports Broadcom-specific
configurations to allow extra play modes. It also supports a clock
input port.
| Port | Index | Notes
|
| | OMX_IndexParamContentURI
| The filename containing the media file can be specified using this
parameter. Currently the format of the URI is assumed to be a file
that the component can directly access using the file system. However,
the file system can support remote mounted file systems.
|
| OMX_IndexConfigTimePosition
| Set the media time position, causing a seek in the file. Some file
formats only support a seek to the start of the file, setting a
different time position in one of these files will return an error.
|
| OMX_IndexConfigTimeSeekMode
| Query / set the seek mode. If the file format does not support
seeking, trying to set the seek mode will return a bad parameter
error.
|
| OMX_IndexConfigPlayMode
| Query / set whether we should return all frames, only IDR frames, or
only IDR frames in reverse order. This can be both got and set on
this component.
|
| OMX_IndexConfigMetadataItemCount
| Query the number of metadata items at a particular scope level (All,
Top, Node, or Port).
|
| OMX_IndexConfigMetadataItem
| Query the value for a particular metadata item. The item can be
specified by index, or searched for by name.
|
| OMX_IndexParamMetadataFilterType
| Not implemented.
|
| OMX_IndexConfigContainerNodeCount
| Query the number of metadata items within a particular container.
|
| OMX_IndexConfigCounterNodeID
| Retrieve the Nth node within a particular container
|
| OMX_IndexConfigDrmView
| This config parameter serves as a notification for DivX DRM protected
rental files. Clients should detect any changes in this parameter
using OMX_IndexConfigRequestCallback. It will be populated with the
current view count and the maximum permissable view count if a DivX
DRM rental file is opened. Clients should respond by setting
OMX_IndexConfigConfirmView config parameter.
|
| OMX_IndexConfigRequestCallback
| Set whether we enable a callback to the client when the value of this
index structure changes. Only supported for the
index OMX_IndexConfigDrmView.
|
| OMX_IndexConfigConfirmView
| It is only applicable to DivX DRM rental files. This is a boolean
config parameter. Setting this to TRUE will continue the playback of
a rental file, while setting to FALSE has no effect, and the host
application is expected to stop the playback afterwards.
|
| OMX_IndexConfigDrmView
| This config parameter serves as a notification for DivX DRM protected rental files.
Host applications should detect any changes in this parameter.
It has two members, nCurrentView and nMaxView, which will be populated with
the current view count and the maximum permissable view count if a DivX DRM rental
file is opened. Host applications should respond by setting OMX_IndexConfigConfirmView
config parameter.
|
| OMX_IndexParamComponentName
| Sets the component name to be used in internal logging messages.
|
| 110 111 112 | OMX_IndexParamPortDefinition
| These are populated with the correct data when the port stream for the
port has been chosen. Only the number of output buffers is allowed to
be set.
|
| OMX_IndexParamNumAvailableStreams
| When the file has been opened, we can query for the number of streams
available on each port.
|
| OMX_IndexParamActiveStream
| Query / set the active port stream.
|
| OMX_IndexParamBrcmDataUnit
| Query the data format being delivered. This indicates whether we
believe the data to be correctly framed in the file format. This
parameter is read-only on this component.
|
| OMX_IndexParamCodecConfig
| Query for codec-specific information. This is current used to transfer
information such as aspect ratio, cropping, and codec-specific header
bytes. This is currently only supported for VideoCore based components
to query. It is read-only on this component.
|
| 110 | OMX_IndexParamAudioPortFormat
| Query / set the audio port format. This port supports several audio
formats, although doesn't support any conversion so the audio format
will be set when the stream has been inspected.
|
| OMX_IndexParamAudioAmr
| Query the AMR properties. Currently eAMRBandMode is supported, and
used to distinguish between different variants of AMR.
|
| OMX_IndexParamAudioAac
| Query AAC format parameters.
|
| OMX_IndexParamAudioMp3
| Query MP3 format parameters.
|
| OMX_IndexParamAudioDdp
| Query DDP format parameters. Currently eBitStreamId is used to
distinguish between different variants of DDP.
|
| OMX_IndexParamAudioPcm
| Query PCM audio parameter. Currently support sampling rate and no. of channels.
|
| OMX_IndexParamAudioEvrc
| This parameter is handled but not filled in by the component. A query will
return all zero values and a set must have all zero values.
|
| OMX_IndexParamAudioG726
| This parameter is handled but not filled in by the component. A query will
return all zero values and a set must have all zero values.
|
| OMX_IndexParamAudioMidi
| This parameter is handled but not filled in by the component. A query will
return all zero values and a set must have all zero values.
|
| OMX_IndexParamAudioQcelp13
| This parameter is handled but not filled in by the component. A query will
return all zero values and a set must have all zero values.
|
| OMX_IndexParamAudioQcelp8
| This parameter is handled but not filled in by the component. A query will
return all zero values and a set must have all zero values.
|
| OMX_IndexParamAudioRa
| This parameter is handled but not filled in by the component. A query will
return all zero values and a set must have all zero values.
|
| OMX_IndexParamAudioVorbis
| This parameter is handled but not filled in by the component. A query will
return all zero values and a set must have all zero values.
|
| OMX_IndexParamAudioWma
| This parameter is handled but not filled in by the component. A query will
return all zero values and a set must have all zero values.
|
| OMX_IndexConfigBrcmAudioTrackGaplessPlayback
| Query encoder delay and padding information for gapless audio playback.
|
| 111 | OMX_IndexParamVideoPortFormat
| Query / set the video port format. This port supports several video
formats, although doesn't support any conversion so the video format
will be set when the stream has been inspected.
|
| OMX_IndexParamNalStreamFormat
| Query the format of NAL units that will be output by the reader
(OMX_NaluFormatStartCodes or OMX_NaluFormatOneNaluPerBuffer).
A value of 0 means that the type can be found by looking at the codec configuration
data. This is parameter is currently only relevant for AVC streams.
|
| OMX_IndexParamVideoAvc
| This parameter is handled but not filled in by the component. A query will
return all zero values and a set must have all zero values.
|
| OMX_IndexParamVideoH263
| This parameter is handled but not filled in by the component. A query will
return all zero values and a set must have all zero values.
|
| OMX_IndexParamVideoMpeg2
| This parameter is handled but not filled in by the component. A query will
return all zero values and a set must have all zero values.
|
| OMX_IndexParamVideoMpeg4
| This parameter is handled but not filled in by the component. A query will
return all zero values and a set must have all zero values.
|
| OMX_IndexParamVideoRv
| This parameter is handled but not filled in by the component. A query will
return all zero values and a set must have all zero values.
|
| OMX_IndexParamVideoWmv
| This parameter is handled but not filled in by the component. A query will
return all zero values and a set must have all zero values.
|
| 112 | OMX_IndexParamOtherPortFormat
| Query / set the other port format. This port supports several text subtitle
formats, although doesn't support any conversion so the format
will be set when the stream has been inspected.
|