Oliver Woodman a70c1f1a4b Remove requirement to specify downstream renderer count.
This makes it so that it's no longer necessary to specify the number
of downstream renderers to HlsSampleSource, FrameworkSampleSource and
ExtractorSampleSource, by forcing the downstream renderers to register
with the SampleSource instances in their constructors. This eliminates
a common source of subtle client bugs where the passed value is incorrect.
2015-06-12 17:52:56 +01:00
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