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42 lines
1.7 KiB
Plaintext
42 lines
1.7 KiB
Plaintext
TODO:
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- directsound: incomplete and somewhat broken
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- osx: understand why AudioQueueGetCurrentTime can return negative mSampleTime
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- test (and fix) sub-prefill size data playback
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- report stream delay instead of position; leave position calculation to user
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- capture support
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- capture and output enumeration and configuration
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- also expose default hardware config to allow decisions on speaker layout
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- prefill occurs at different times in each backend:
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- pulse prefills async off worker thread after init
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- coreaudio prefills during init
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- alsa prefills async after start
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- expose configured prefill size; may differ from requested latency
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- solved by exposing stream delay
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- xruns may occur in user callback but also in audio hardware
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may need to expose details of hardware xruns to user api
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- document thread safety
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- document which calls may block, and when effects take effect
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- document what's permissible inside callbacks
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- implement basic channel mapping for surround
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- vorbis has documented mapping based on channel count (if mapping type ==
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0) -- http://xiph.org/vorbis/doc/Vorbis_I_spec.html#x1-800004.3.9
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1 -> M
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2 -> L, R
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3 -> L, C, R
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4 -> L, R, RL, RR
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5 -> L, C, R, RL, RR
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6 -> L, C, R, RL, RR, LFE
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7 -> L, C, R, SL, SR, RC, LFE
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8 -> L, C, R, SL, SR, RL, RR, LFE
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>8 -> application defined
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- wave files with channel count only
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3 -> L, R, C
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4 -> L, R, RL, RR
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5 -> L, R, C, RL, RR
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6 -> L, R, C, LFE, RL, RR
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7 -> L, R, C, LFE, RC, SL, SR
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8 -> L, R, C, LFE, RL, RR, SL, SR
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- wave files with WAVE_FORMAT_EXTENSIBLE have explicitly mappings, can
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extract these
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- implement configurable channel mapping
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