* There's no need to supply ways to mismatch the buffer duration
and size. Anything should reflect the media_format, this is at least
fixed on API level.
* There's no point actually in providing BTimeSource dependant
functionality. If and when there will be need for something like
that, possibly never, an higher level solution will be integrated.
* The idea is to move the callback based mechanism into a derived
class. The objects can be composed to create working systems.
* The BMediaClient class supply RegisterInput/RegisterOutput
and BeginInput/BeginOutput is moved to BSimpleMediaClient.
* Various minor fixes.
* Capabilities() become Kind()
* Use media_client and media_connection to better model
the different situations of the API. Reduce code duplication
and move media_kit structs/methods into private.
* Various API and beauty improvements.
* Introduce id management for media_connections.
* Fix different issues preventing to correctly begin a connection.
* Those structs are provided as replacement for the classic
media_kit ones. They provide better encapsulation of the data
and the resulting code is heavily simplified. It's planned to
introduce BMediaRoster functions to provide conversion from
media_node and media_input/media_output to media_client
and media_connection.
* The BMediaClient is an higher level API to the media_kit. It
corresponds to what the layout API was for the interface_kit.
The main idea is to allow the developer concentrate only on
higher level details and avoiding handle with the tricky parts
of the media_kit. At the same time the general purpose node that
is implemented inside would allow implementing the best techniques
around thus at the same time reducing code duplication and increasing
efficiency.
* BMediaClient is WIP, this is the initial merge of the branch.
The initial development stone was set long time ago and walked
through various design/implementation phases.
* Ideally we should support this feature by default to allow
future improvements to the plugins management.
* Fixes the major memory corruption that lead to various
crashes on exit in MediaPlayer.
* Wait evaluation is done considering both position
and buffer size.
* Set back position to 0 after seeking.
* Simplify EvaluatePosition to take advantage of inheritance.
* Use back position to determine the current size of the buffer.
* Add more debug tracing.
* Other minor fixes.
* Implement Open/Close mechanism.
* Implement SetBuffer.
* Implement timeout handling.
* Improve Seek mechanism, this is now working by locking the
thread until the backend call SeekCompleted.
* Moved data locking in the internal buffer class, includes handling
of backend writes.
* Takes advantage of inheritance for getting the size. The choice is
made depending on the flags. This allow the implementer to easily
return a custom size by reimplementing GetSize. At the same time
a plain BAdapterIO can still have it's total size set, but the behavior
will change depending it's mutable or not.
* Some decisions are now made by considering everything in absolute
values.
* Other minor fixes.
* This is by default provided using a relative buffer. When the
client request a seek over the range we currently have, we will
ask the backend with a SeekRequested. When the backend operation
ended successfully, the client is required to call SeekCompleted
before to return. This will cause the offset to change and the
buffer is cleaned as result. Next data received will be considered
to be at a position equal to the offset plus the relative position.
* This class is provided as a safe multithreaded communication channel
between a BMediaIO-like interface and a Read/Write backend.
* Includes internal buffering and can be used to provide multithreaded
edit of the data.
* Current limitations include missing BOutputAdapter and
correct timeout handling.
* Future plans provide a BRemoteAdapterIO that using ports
and areas allow to easily send big data between processes.
