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clarify sample index calculation with channel_count

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This commit is contained in:
Michael Sippel 2024-12-03 15:52:30 +01:00
parent c22eb1cd8f
commit e441ed634f
Signed by: senvas
GPG key ID: F96CF119C34B64A6
1 changed files with 6 additions and 6 deletions
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12
01-play-sine/src/main.rs
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@ -29,12 +29,12 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
.register(); .register();
let sample_rate = 48000; let sample_rate = 48000;
let channel_count = 2; let channel_count : usize = 2;
let mut audio_info = AudioInfoRaw::new(); let mut audio_info = AudioInfoRaw::new();
audio_info.set_format(AudioFormat::F32LE); audio_info.set_format(AudioFormat::F32LE);
audio_info.set_rate(sample_rate); audio_info.set_rate(sample_rate);
audio_info.set_channels(channel_count); audio_info.set_channels(channel_count as u32);
let param_bytes = PodSerializer::serialize( let param_bytes = PodSerializer::serialize(
Cursor::new(vec![]), Cursor::new(vec![]),
@ -83,7 +83,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
} }
}; };
let stride = std::mem::size_of::<f32>() * (channel_count as usize); let stride = std::mem::size_of::<f32>() * channel_count;
let datas = buffer.datas_mut(); let datas = buffer.datas_mut();
let data = &mut datas[0]; let data = &mut datas[0];
@ -104,9 +104,9 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
let phi = pi2 * time_secs * sine_freq; let phi = pi2 * time_secs * sine_freq;
let value = 0.5 + 0.5 * f32::sin(phi); let value = 0.5 + 0.5 * f32::sin(phi);
slice[2 * i] = value; slice[channel_count*i + 0] = value;
slice[2 * i + 1] = value; slice[channel_count*i + 1] = value;
samples_written += 2; samples_written += 1;
} }
} }