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Working, but very slow

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This commit is contained in:
Jamie Hardt
2021-01-04 19:12:03 -08:00
parent eee3c3f625
commit 6776820e16
1 changed files with 23 additions and 5 deletions
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28
examples/wave-deinter.rs
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@@ -8,7 +8,7 @@ use std::io;
use std::path::Path;
extern crate bwavfile;
use bwavfile::{Error,WaveReader, ChannelDescriptor, ChannelMask};
use bwavfile::{Error,WaveReader, WaveWriter, ChannelDescriptor, ChannelMask, WaveFmt, AudioFrameWriter};
#[macro_use]
extern crate clap;
@@ -44,9 +44,10 @@ fn name_suffix(force_numeric : bool, delim : &str, index: usize, channel_descrip
}
fn process_file(infile: &str, delim : &str, numeric_channel_names : bool) -> Result<(), Error> {
let mut read_wave = WaveReader::open(infile)?;
let channel_desc = read_wave.channels()?;
let mut input_file = WaveReader::open(infile)?;
let channel_desc = input_file.channels()?;
let input_format = input_file.format()?;
if channel_desc.len() == 1 {
println!("Input file in monoaural, exiting.");
return Ok(());
@@ -56,10 +57,27 @@ fn process_file(infile: &str, delim : &str, numeric_channel_names : bool) -> Res
let basename = infile_path.file_stem().expect("Unable to extract file basename").to_str().unwrap();
let output_dir = infile_path.parent().expect("Unable to derive parent directory");
let ouptut_format = WaveFmt::new_pcm_mono(input_format.sample_rate, input_format.bits_per_sample);
let mut input_wave_reader = input_file.audio_frame_reader()?;
for (n, channel) in channel_desc.iter().enumerate() {
let suffix = name_suffix(numeric_channel_names, delim, n + 1, channel);
let outfile_name = output_dir.join(format!("{}{}.wav", basename, suffix)).into_os_string().into_string().unwrap();
let outfile_name = output_dir.join(format!("{}{}.wav", basename, suffix))
.into_os_string().into_string().unwrap();
println!("Will create file {}", outfile_name);
let output_file = WaveWriter::create(&outfile_name, ouptut_format).expect("Failed to create new file");
let mut output_wave_writer = output_file.audio_frame_writer()?;
let mut buffer = input_format.create_frame_buffer();
while input_wave_reader.read_integer_frame(&mut buffer)? > 0 {
output_wave_writer.write_integer_frames(&buffer[n..=n])?;
}
output_wave_writer.end()?;
input_wave_reader.locate(0)?;
}
Ok(())