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docs/design: updates on effects and conforming materials

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Edward Hervey 2011-08-29 09:51:10 +02:00
parent 79756d2ab6
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1 changed files with 29 additions and 10 deletions
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docs/random/design
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@ -81,19 +81,27 @@ FUNDAMENTAL GOALS:
* Effects support
Status:
Implemented, requires API addition for all use-cases.
Partially Implemented, requires API addition for all use-cases.
Problems:
We must be able to provide a list of effects available on the system at
runtime.
We must be able to configure effects through an API in GES
withtout having to access the GstElements properties directly.
We should also expose the GstElement-s contained in an effect so
it is possible for people to control their properties as they wish.
We must be able to implement and handle complexe effects directly in GES
We must be able to configure effects through time -> Keyframes without
duplicating code from GStreamer
In order for users to apply multimedia effects in their timelines,
we need an API to search, add and control those effects.
We must be able to provide a list of effects available on the system
at runtime.
We must be able to configure effects through an API in GES without
having to access the GstElements properties directly.
We should also expose the GstElements contained in an effect so it
is possible for people to control their properties as they wish.
We must be able to implement and handle complex effects directly in
GES.
We must be able to configure effects through time -> Keyframes
without duplicating code from GStreamer.
* Source Material object
@ -187,6 +195,17 @@ FUNDAMENTAL GOALS:
Conforming the material here means bringing it to a common format.
All the information regarding the contents we are handling are
stored in the various GESMaterial. The target format is also known
throught the caps of the various GESTracks involved. Those two
information will allow us to make decisions on what course of action
to take.
By default content should be conformed to a good balance of speed
and avoid loss of information.
Ex: If mixing a 4:3 video and a 16:9 video with a target track
aspect ratio of 4:3, we will make the width of the two videos
be equal without distorting their respective aspect-ratios.
* Media Asset Management integration