From: Ben Hutchings Date: Thu, 30 Dec 2010 03:27:25 +0000 (+0000) Subject: Add diagram of mixer internals X-Git-Url: https://git.decadent.org.uk/gitweb/?a=commitdiff_plain;h=52b286d5570447d1e4d9b4e70e8639d2e0db3fc3;p=lca-dvswitch.git Add diagram of mixer internals --- diff --git a/Makefile b/Makefile index b6b835b..09e0f40 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ -all: s5-checksums.txt dvswitch-simple.svg screenshot-1-annotated.png +all: s5-checksums.txt dvswitch-simple.svg screenshot-1-annotated.png dvswitch-internal.svg clean: - rm -r s5-checksums.txt s5-blank dvswitch-simple.svg screenshot-1-annotated.png + rm -r s5-checksums.txt s5-blank dvswitch-simple.svg screenshot-1-annotated.png dvswitch-internal.svg s5-checksums.txt: /usr/share/s5/s5-blank s5 blank . diff --git a/dvswitch-internal.dia b/dvswitch-internal.dia new file mode 100644 index 0000000..27728a4 Binary files /dev/null and b/dvswitch-internal.dia differ diff --git a/index.html b/index.html index 3d506df..dec5f13 100644 --- a/index.html +++ b/index.html @@ -262,5 +262,27 @@ +
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Mixer internals

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+ To simplify the diagram, I omitted connection setup, tally light + and recording control, and the internal sinks that haven't been + implemented yet. +

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+ All these interfaces have limited-length queues. If a queue + fills up, frames have to be dropped - we must not block or use + unlimited memory! +

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+ The mixer clock thread maintains a frame clock at about 25 or + 30 Hz depending on the video system, constantly adjusted to + follow the audio source. +

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