libretro / libretro/libretro-common
Audio mixer discussion
Nobody has claimed this yet.
- Dominant language
- C
- Stars
- 180
- Forks
- 98
- Avg merge
- 7h 16m
- Merged PRs (30d)
- 1
Description
Original post by @leiradel:
"My problem with the mixer was that I couldn't decide how to store PCM data in memory. The problem is that the data comes in 16-bit signed integers, the resampler wants floats, the mixer wants 16-bit signed integers (I'm not sure about this one), and the audio sample rate can change at any time (as I was told at the dev channel.)
So if I keep audio data as int16_t, I'll need to convert to float and resample every time a sound is played. I can convert to float only once and resample every time, but then we'll need twice the memory for audio data. I wanted to get away with resampling every time, but then I'd need to keep the original data around so if the sample rate changes I could resample to the new rate."
Contributor guide
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
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Research direction
The issue names no files, tests, or entry points. Read the discussion and repository audio code to understand the PCM storage and resampling constraints, but the issue does not define a settled implementation or a clear condition for done.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c
- Domain
- audio-video-rtc
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 20/100