Fix reattaching audio source at dynamic audio codec change. (#530)

[smudri85]

Summary: Fix reattaching audio source at dynamic audio codec change.
Type: Fix
Test Plan: UT/CT, Fullstack
Jira: RDKEMW-17771

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[Copilot]

Pull request overview

This PR addresses failures when reattaching the audio source during a dynamic audio codec change by introducing explicit “remove source” handling on the GStreamer player side and by gating audio data/underflow behavior while the audio source is considered removed.

Changes:

• Add IGstGenericPlayer::removeSource() and a new tasks::generic::RemoveSource task to reset audio-stream state on removal.
• Prevent audio data requests and audio underflow notifications while audioSourceRemoved is set; ensure reattach re-enables data flow.
• Extend unit tests/mocks and task-factory coverage to validate the new remove/reattach behavior.

Reviewed changes

Copilot reviewed 27 out of 27 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tests/unittests/media/server/mocks/gstplayer/GstGenericPlayerPrivateMock.h	Minor mock header cleanup.
tests/unittests/media/server/mocks/gstplayer/GstGenericPlayerMock.h	Add removeSource() mock for new player API.
tests/unittests/media/server/mocks/gstplayer/GenericPlayerTaskFactoryMock.h	Add createRemoveSource() factory mock method.
tests/unittests/media/server/main/mediaPipeline/SourceTest.cpp	Assert server-side removeSource() triggers Gst player removal.
tests/unittests/media/server/gstplayer/genericPlayer/tasksTests/RemoveSourceTest.cpp	New task-level tests for RemoveSource behavior.
tests/unittests/media/server/gstplayer/genericPlayer/tasksTests/NeedDataTest.cpp	Add test for NeedData behavior when audio source is removed.
tests/unittests/media/server/gstplayer/genericPlayer/tasksTests/GenericPlayerTaskFactoryTest.cpp	Validate factory can create RemoveSource task.
tests/unittests/media/server/gstplayer/genericPlayer/tasksTests/AttachSourceTest.cpp	Update reattach tests to require “removed” state + data request.
tests/unittests/media/server/gstplayer/genericPlayer/GstGenericPlayerTest.cpp	Add test for GstGenericPlayer::removeSource() scheduling.
tests/unittests/media/server/gstplayer/genericPlayer/GstGenericPlayerPrivateTest.cpp	Update/extend underflow scheduling tests with audioSourceRemoved.
tests/unittests/media/server/gstplayer/genericPlayer/common/GenericTasksTestsBase.h	Add helpers for removed-source and RemoveSource task testing.
tests/unittests/media/server/gstplayer/genericPlayer/common/GenericTasksTestsBase.cpp	Implement new test helpers + trigger RemoveSource task execution.
tests/unittests/media/server/gstplayer/CMakeLists.txt	Register new RemoveSource unit test.
media/server/main/source/MediaPipelineServerInternal.cpp	Invoke Gst player removeSource(type) during pipeline source removal.
media/server/gstplayer/source/tasks/generic/RemoveSource.cpp	New task to reset audio-stream state/buffers/EOS info on removal.
media/server/gstplayer/source/tasks/generic/NeedData.cpp	Skip requesting audio data from client when audio source is removed.
media/server/gstplayer/source/tasks/generic/GenericPlayerTaskFactory.cpp	Add factory creation of RemoveSource task.
media/server/gstplayer/source/tasks/generic/CheckAudioUnderflow.cpp	Disable audio underflow handling when audio source is removed.
media/server/gstplayer/source/tasks/generic/AttachSource.cpp	On audio reattach, re-enable data-needed and request more audio data.
media/server/gstplayer/source/GstGenericPlayer.cpp	Add removeSource() and gate underflow scheduling on removed-audio flag.
media/server/gstplayer/interface/IGstGenericPlayer.h	Add removeSource() API (doc requires alignment with implementation).
media/server/gstplayer/include/tasks/IGenericPlayerTaskFactory.h	Add createRemoveSource() to task factory interface.
media/server/gstplayer/include/tasks/generic/RemoveSource.h	New RemoveSource task header.
media/server/gstplayer/include/tasks/generic/GenericPlayerTaskFactory.h	Declare createRemoveSource() override.
media/server/gstplayer/include/GstGenericPlayer.h	Declare removeSource() on concrete player.
media/server/gstplayer/include/GenericPlayerContext.h	Add audioSourceRemoved flag to player context.
media/server/gstplayer/CMakeLists.txt	Build system: compile new RemoveSource task into gstplayer library.

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Coverage statistics of your commit:
Congratulations, your commit improved lines coverage from: 0.0% to 84.2%
Congratulations, your commit improved functions coverage from: 0.0% to 92.6%