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comparison semiconginev2/audio/mixer.nim @ 1234:841e12f33c47

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add: text & font rendering, not tested yet
author sam <sam@basx.dev>
date Sat, 20 Jul 2024 00:03:57 +0700
parents a3fa15c25026
children
comparison
equal deleted inserted replaced
1233:1cf698973dca 1234:841e12f33c47
1
2 const NBUFFERS = 32 1 const NBUFFERS = 32
3 const BUFFERSAMPLECOUNT = 256 2 const BUFFERSAMPLECOUNT = 256
4 const AUDIO_SAMPLE_RATE* = 44100 3 const AUDIO_SAMPLE_RATE* = 44100
5 4
6 type 5 type
196 clip(int32(a[1]) + int32(b[1])), 195 clip(int32(a[1]) + int32(b[1])),
197 ] 196 ]
198 197
199 proc updateSoundBuffer(mixer: var Mixer) = 198 proc updateSoundBuffer(mixer: var Mixer) =
200 let t = getMonoTime() 199 let t = getMonoTime()
201
202 let tDebug = getTime()
203 # echo ""
204 # echo tDebug
205 200
206 let dt = (t - mixer.lastUpdate).inNanoseconds.float64 / 1_000_000_000'f64 201 let dt = (t - mixer.lastUpdate).inNanoseconds.float64 / 1_000_000_000'f64
207 mixer.lastUpdate = t 202 mixer.lastUpdate = t
208 203
209 # update fadings 204 # update fadings
236 stoppedSounds.add id 231 stoppedSounds.add id
237 for id in stoppedSounds: 232 for id in stoppedSounds:
238 track.playing.del(id) 233 track.playing.del(id)
239 mixer.buffers[mixer.currentBuffer][i] = mixedSample 234 mixer.buffers[mixer.currentBuffer][i] = mixedSample
240 # send data to sound device 235 # send data to sound device
241 # echo getTime() - tDebug
242 mixer.device.WriteSoundData(mixer.currentBuffer) 236 mixer.device.WriteSoundData(mixer.currentBuffer)
243 # echo getTime() - tDebug
244 mixer.currentBuffer = (mixer.currentBuffer + 1) mod mixer.buffers.len 237 mixer.currentBuffer = (mixer.currentBuffer + 1) mod mixer.buffers.len
245 238
246 # DSP functions 239 # DSP functions
247 # TODO: finish implementation, one day 240 # TODO: finish implementation, one day
248 241