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Cleanup pad probes examples a bit

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This commit is contained in:
Sebastian Dröge 2017-07-29 16:15:00 +01:00
parent 2915bfa299
commit 945d136acb
1 changed files with 13 additions and 17 deletions
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30
examples/src/bin/pad_probes.rs
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@ -3,8 +3,6 @@ use gst::*;
use std::u64;
use std::i16;
use std::env;
use std::mem;
fn main() {
gst::init().unwrap();
@ -15,21 +13,19 @@ fn main() {
let src = pipeline.clone().dynamic_cast::<Bin>().unwrap().get_by_name("src").unwrap();
let src_pad = src.get_static_pad("src").unwrap();
src_pad.add_probe(PAD_PROBE_TYPE_BUFFER, |_, probe_info| {
if let Some(ref probe_data) = probe_info.data {
match *probe_data {
PadProbeData::Buffer(ref buffer) => {
let map = buffer.map_read().unwrap();
let data = map.as_slice();
let sum: f64 = data.chunks(2).map(|sample| {
let u: u16 = ((sample[0] as u16) << 8) | (sample[1] as u16);
let f = (u as i16 as f64) / (i16::MAX as f64);
f * f
}).sum();
let rms = (sum / ((data.len() / 2) as f64)).sqrt();
println!("rms: {}", rms);
},
_ => (),
}
match probe_info.data {
Some(PadProbeData::Buffer(ref buffer)) => {
let map = buffer.map_read().unwrap();
let data = map.as_slice();
let sum: f64 = data.chunks(2).map(|sample| {
let u: u16 = ((sample[0] as u16) << 8) | (sample[1] as u16);
let f = (u as i16 as f64) / (i16::MAX as f64);
f * f
}).sum();
let rms = (sum / ((data.len() / 2) as f64)).sqrt();
println!("rms: {}", rms);
},
_ => (),
}
PadProbeReturn::Ok