Add AudioClip trait

This commit is contained in:
Daniel Wolf 2022-11-16 21:18:41 +01:00
parent e1e137945e
commit 2cd2ba77b9
14 changed files with 1083 additions and 1 deletions

1
.gitattributes vendored
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* text=auto eol=lf
*.bat text eol=crlf
# Use Git LFS for binary files
*.wav filter=lfs diff=lfs merge=lfs -text

3
.gitignore vendored
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.gradle/
.vs/
build/
target/
*.user
*.profraw

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gradle/wrapper/gradle-wrapper.jar vendored Normal file

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distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-7.6-bin.zip
networkTimeout=10000
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

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gradlew vendored Normal file
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#!/bin/sh
#
# Copyright © 2015-2021 the original authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
##############################################################################
#
# Gradle start up script for POSIX generated by Gradle.
#
# Important for running:
#
# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
# noncompliant, but you have some other compliant shell such as ksh or
# bash, then to run this script, type that shell name before the whole
# command line, like:
#
# ksh Gradle
#
# Busybox and similar reduced shells will NOT work, because this script
# requires all of these POSIX shell features:
# * functions;
# * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
# «${var#prefix}», «${var%suffix}», and «$( cmd )»;
# * compound commands having a testable exit status, especially «case»;
# * various built-in commands including «command», «set», and «ulimit».
#
# Important for patching:
#
# (2) This script targets any POSIX shell, so it avoids extensions provided
# by Bash, Ksh, etc; in particular arrays are avoided.
#
# The "traditional" practice of packing multiple parameters into a
# space-separated string is a well documented source of bugs and security
# problems, so this is (mostly) avoided, by progressively accumulating
# options in "$@", and eventually passing that to Java.
#
# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
# see the in-line comments for details.
#
# There are tweaks for specific operating systems such as AIX, CygWin,
# Darwin, MinGW, and NonStop.
#
# (3) This script is generated from the Groovy template
# https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
# within the Gradle project.
#
# You can find Gradle at https://github.com/gradle/gradle/.
#
##############################################################################
# Attempt to set APP_HOME
# Resolve links: $0 may be a link
app_path=$0
# Need this for daisy-chained symlinks.
while
APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path
[ -h "$app_path" ]
do
ls=$( ls -ld "$app_path" )
link=${ls#*' -> '}
case $link in #(
/*) app_path=$link ;; #(
*) app_path=$APP_HOME$link ;;
esac
done
# This is normally unused
# shellcheck disable=SC2034
APP_BASE_NAME=${0##*/}
APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD=maximum
warn () {
echo "$*"
} >&2
die () {
echo
echo "$*"
echo
exit 1
} >&2
# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
nonstop=false
case "$( uname )" in #(
CYGWIN* ) cygwin=true ;; #(
Darwin* ) darwin=true ;; #(
MSYS* | MINGW* ) msys=true ;; #(
NONSTOP* ) nonstop=true ;;
esac
CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
# Determine the Java command to use to start the JVM.
if [ -n "$JAVA_HOME" ] ; then
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
# IBM's JDK on AIX uses strange locations for the executables
JAVACMD=$JAVA_HOME/jre/sh/java
else
JAVACMD=$JAVA_HOME/bin/java
fi
if [ ! -x "$JAVACMD" ] ; then
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
else
JAVACMD=java
which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
# Increase the maximum file descriptors if we can.
if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
case $MAX_FD in #(
max*)
# In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
# shellcheck disable=SC3045
MAX_FD=$( ulimit -H -n ) ||
warn "Could not query maximum file descriptor limit"
esac
case $MAX_FD in #(
'' | soft) :;; #(
*)
# In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
# shellcheck disable=SC3045
ulimit -n "$MAX_FD" ||
warn "Could not set maximum file descriptor limit to $MAX_FD"
esac
fi
# Collect all arguments for the java command, stacking in reverse order:
# * args from the command line
# * the main class name
# * -classpath
# * -D...appname settings
# * --module-path (only if needed)
# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
# For Cygwin or MSYS, switch paths to Windows format before running java
if "$cygwin" || "$msys" ; then
APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
JAVACMD=$( cygpath --unix "$JAVACMD" )
# Now convert the arguments - kludge to limit ourselves to /bin/sh
for arg do
if
case $arg in #(
-*) false ;; # don't mess with options #(
/?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath
[ -e "$t" ] ;; #(
*) false ;;
esac
then
arg=$( cygpath --path --ignore --mixed "$arg" )
fi
# Roll the args list around exactly as many times as the number of
# args, so each arg winds up back in the position where it started, but
# possibly modified.
#
# NB: a `for` loop captures its iteration list before it begins, so
# changing the positional parameters here affects neither the number of
# iterations, nor the values presented in `arg`.
shift # remove old arg
set -- "$@" "$arg" # push replacement arg
done
fi
# Collect all arguments for the java command;
# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
# shell script including quotes and variable substitutions, so put them in
# double quotes to make sure that they get re-expanded; and
# * put everything else in single quotes, so that it's not re-expanded.
set -- \
"-Dorg.gradle.appname=$APP_BASE_NAME" \
-classpath "$CLASSPATH" \
org.gradle.wrapper.GradleWrapperMain \
"$@"
# Stop when "xargs" is not available.
if ! command -v xargs >/dev/null 2>&1
then
die "xargs is not available"
fi
# Use "xargs" to parse quoted args.
#
# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
#
# In Bash we could simply go:
#
# readarray ARGS < <( xargs -n1 <<<"$var" ) &&
# set -- "${ARGS[@]}" "$@"
#
# but POSIX shell has neither arrays nor command substitution, so instead we
# post-process each arg (as a line of input to sed) to backslash-escape any
# character that might be a shell metacharacter, then use eval to reverse
# that process (while maintaining the separation between arguments), and wrap
# the whole thing up as a single "set" statement.
#
# This will of course break if any of these variables contains a newline or
# an unmatched quote.
#
eval "set -- $(
printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
xargs -n1 |
sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
tr '\n' ' '
)" '"$@"'
exec "$JAVACMD" "$@"

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gradlew.bat vendored Normal file
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@rem
@rem Copyright 2015 the original author or authors.
@rem
@rem Licensed under the Apache License, Version 2.0 (the "License");
@rem you may not use this file except in compliance with the License.
@rem You may obtain a copy of the License at
@rem
@rem https://www.apache.org/licenses/LICENSE-2.0
@rem
@rem Unless required by applicable law or agreed to in writing, software
@rem distributed under the License is distributed on an "AS IS" BASIS,
@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@rem See the License for the specific language governing permissions and
@rem limitations under the License.
@rem
@if "%DEBUG%"=="" @echo off
@rem ##########################################################################
@rem
@rem Gradle startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal
set DIRNAME=%~dp0
if "%DIRNAME%"=="" set DIRNAME=.
@rem This is normally unused
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%
@rem Resolve any "." and ".." in APP_HOME to make it shorter.
for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome
set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if %ERRORLEVEL% equ 0 goto execute
echo.
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
if exist "%JAVA_EXE%" goto execute
echo.
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:execute
@rem Setup the command line
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
:end
@rem End local scope for the variables with windows NT shell
if %ERRORLEVEL% equ 0 goto mainEnd
:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
set EXIT_CODE=%ERRORLEVEL%
if %EXIT_CODE% equ 0 set EXIT_CODE=1
if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
exit /b %EXIT_CODE%
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega

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4
rhubarb/Cargo.toml Normal file
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[workspace]
members = [
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]

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[package]
name = "rhubarb-audio"
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edition = "2021"
[dependencies]
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log = "0.4.17"
[dev-dependencies]
assert_matches = "1.5.0"
rstest = "0.15.0"
speculoos = "0.10.0"

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tasks.register("testCoverage") {
group = "Rhubarb"
doLast {
val environmentVariables = mapOf(
"RUSTFLAGS" to "-Cinstrument-coverage",
"LLVM_PROFILE_FILE" to File(project.projectDir, "rhubarb-audio-%p-%m.profraw").path,
)
project.exec {
commandLine = listOf("cargo", "build")
environment(environmentVariables)
}
project.exec {
commandLine = listOf("cargo", "test")
environment(environmentVariables)
}
project.exec {
commandLine = listOf(
"grcov",
"--source-dir", ".",
"--binary-path", "../target/debug/deps",
"--output-type", "html",
"--branch", "--ignore-not-existing",
"--output-path", "../target/debug/coverage",
".",
)
}
project.delete(fileTree(project.projectDir) { include("*.profraw") })
}
}

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use crate::audio_error::AudioError;
use dyn_clone::DynClone;
use std::fmt::Debug;
use std::time::Duration;
const NANOS_PER_SEC: u32 = 1_000_000_000;
/// An audio clip containing monaural sampled audio.
///
/// Structs implementing this trait may read the audio data from disk, keep it in memory, or
/// generate it on the fly.
pub trait AudioClip: DynClone + Debug {
/// The number of audio frames in the audio clip.
fn len(&self) -> u64;
/// The sampling rate in frames per second.
fn sampling_rate(&self) -> u32;
/// Creates a new sample reader for reading from this audio clip.
fn create_sample_reader(&self) -> Result<Box<dyn SampleReader>, AudioError>;
/// Returns the duration of this audio clip.
fn duration(&self) -> Duration {
Duration::from_nanos(
(u128::from(self.len()) * u128::from(NANOS_PER_SEC) / u128::from(self.sampling_rate()))
as u64,
)
}
/// Indicates whether this audio clip is empty, that is, contains zero samples.
fn is_empty(&self) -> bool {
self.len() == 0
}
}
/// Allows seeking within an [AudioClip] and reading its samples.
pub trait SampleReader: Debug {
/// The number of audio frames in the associated audio clip.
fn len(&self) -> u64;
/// The current read position in frames.
fn position(&self) -> u64;
/// Seeks to the specified position in frames.
///
/// *Performance note:* Implementers of source sample readers should make sure that this method
/// doesn't perform any time-consuming work such as reading from the disk. This allows
/// downstream sample readers to unconditionally call `seek` upstream without worrying about
/// performance.
fn set_position(&mut self, position: u64);
/// Attempts to read samples until the given buffer is full.
/// Errors if there are not enough samples left to fill the buffer.
fn read(&mut self, buffer: &mut [Sample]) -> Result<(), AudioError>;
/// Indicates whether the associated audio clip is empty, that is, contains zero samples.
fn is_empty(&self) -> bool {
self.len() == 0
}
/// The number of remaining samples before the end of the audio clip is reached.
fn remainder(&self) -> u64 {
self.len() - self.position()
}
}
/// An audio sample in the range [-1, 1].
pub type Sample = f32;
#[cfg(test)]
mod tests {
use super::*;
use rstest::*;
use speculoos::prelude::*;
mod audio_clip {
use super::*;
#[derive(Clone, Debug)]
struct MockAudioClip {
len: u64,
sampling_rate: u32,
}
impl AudioClip for MockAudioClip {
fn len(&self) -> u64 {
self.len
}
fn sampling_rate(&self) -> u32 {
self.sampling_rate
}
fn create_sample_reader(&self) -> Result<Box<dyn SampleReader>, AudioError> {
todo!()
}
}
#[rstest]
fn provides_duration() {
let mut clip = MockAudioClip {
len: 0,
sampling_rate: 44100,
};
assert_that!(clip.duration()).is_equal_to(Duration::ZERO);
clip.len = 4410;
assert_that!(clip.duration()).is_equal_to(Duration::from_millis(100));
clip.len = 1;
clip.sampling_rate = 1_000_000;
assert_that!(clip.duration()).is_equal_to(Duration::from_micros(1));
}
#[rstest]
fn provides_is_empty() {
let mut clip = MockAudioClip {
len: 0,
sampling_rate: 44100,
};
assert_that!(clip.is_empty()).is_true();
clip.len = 1;
assert_that!(clip.is_empty()).is_false();
clip.sampling_rate = u32::MAX;
assert_that!(clip.is_empty()).is_false();
}
}
mod sample_reader {
use super::*;
#[derive(Debug)]
struct MockSampleReader {
pos: u64,
len: u64,
}
impl SampleReader for MockSampleReader {
fn len(&self) -> u64 {
self.len
}
fn position(&self) -> u64 {
self.pos
}
fn set_position(&mut self, _position: u64) {
todo!()
}
fn read(&mut self, _buffer: &mut [Sample]) -> Result<(), AudioError> {
todo!()
}
}
#[rstest]
fn provides_is_empty() {
let mut sample_reader = MockSampleReader { pos: 0, len: 0 };
assert_that!(sample_reader.is_empty()).is_true();
sample_reader.len = 1;
assert_that!(sample_reader.is_empty()).is_false();
}
#[rstest]
fn provides_remainder() {
let mut sample_reader = MockSampleReader { pos: 0, len: 0 };
assert_that!(sample_reader.remainder()).is_equal_to(0);
sample_reader.len = 10;
assert_that!(sample_reader.remainder()).is_equal_to(10);
sample_reader.pos = 8;
assert_that!(sample_reader.remainder()).is_equal_to(2);
}
}
}

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@ -0,0 +1,161 @@
use std::{
error::Error,
fmt::{self, Display, Formatter},
io::{self, ErrorKind},
};
/// The error type for working with audio.
#[derive(Debug)]
pub enum AudioError {
/// This library doesn't know how to read audio files with the current file's extension.
UnsupportedFileType,
/// The current file uses an unsupported feature, such as an audio codec or a sample format.
///
/// Expects a string containing a more detailed error message.
UnsupportedFileFeature(String),
/// The current file doesn't adhere to the expected file format. This could be because it got
/// corrupted during transfer or because it is a valid file that received the wrong file
/// extension.
///
/// Expects a string containing a more detailed error message.
CorruptFile(String),
/// An I/O error occurred trying to read from or write to the current file.
IoError(io::Error),
}
impl Error for AudioError {
fn source(&self) -> Option<&(dyn Error + 'static)> {
// Don't expose source. See https://stackoverflow.com/a/63620301/52041
None
}
}
impl Display for AudioError {
fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
match self {
Self::UnsupportedFileType => write!(f, "Unsupported audio file type."),
Self::UnsupportedFileFeature(message) => {
write!(f, "Unsupported audio file feature: {message}")
}
Self::CorruptFile(message) => {
write!(f, "Audio file appears to be corrupt: {message}")
}
Self::IoError(io_error) => write!(f, "Error reading audio file: {io_error}"),
}
}
}
impl From<io::Error> for AudioError {
fn from(io_error: io::Error) -> Self {
if io_error.kind() == ErrorKind::UnexpectedEof {
Self::CorruptFile("Unexpected end of file.".to_owned())
} else {
Self::IoError(io_error)
}
}
}
impl PartialEq for AudioError {
fn eq(&self, other: &Self) -> bool {
match (self, other) {
(Self::UnsupportedFileType, Self::UnsupportedFileType) => true,
(
Self::UnsupportedFileFeature(left_message),
Self::UnsupportedFileFeature(right_message),
) => left_message == right_message,
(Self::CorruptFile(left_message), Self::CorruptFile(right_message)) => {
left_message == right_message
}
(Self::IoError(left_error), Self::IoError(right_error)) => {
left_error.kind() == right_error.kind()
}
_ => false,
}
}
}
#[cfg(test)]
mod tests {
use super::*;
use assert_matches::assert_matches;
use rstest::*;
use speculoos::prelude::*;
#[rstest]
fn does_not_expose_source() {
let error = AudioError::UnsupportedFileType;
assert_that!(error.source()).is_none();
let error = AudioError::IoError(io::Error::from(ErrorKind::NotFound));
assert_that!(error.source()).is_none();
}
#[rstest]
fn supports_display() {
let error = AudioError::UnsupportedFileType;
assert_that!(format!("{error}")).is_equal_to("Unsupported audio file type.".to_owned());
let error = AudioError::UnsupportedFileFeature("Spacial audio not supported.".to_owned());
assert_that!(format!("{error}"))
.is_equal_to("Unsupported audio file feature: Spacial audio not supported.".to_owned());
let error = AudioError::CorruptFile("Checksum doesn't match.".to_owned());
assert_that!(format!("{error}"))
.is_equal_to("Audio file appears to be corrupt: Checksum doesn't match.".to_owned());
let error = AudioError::IoError(io::Error::from(ErrorKind::NotFound));
assert_that!(format!("{error}"))
.is_equal_to("Error reading audio file: entity not found".to_owned());
}
mod from_io_error {
use super::*;
#[rstest]
fn converts_from_io_error() {
let error = AudioError::from(io::Error::from(ErrorKind::NotFound));
assert_matches!(
error,
AudioError::IoError(io_error) if io_error.kind() == ErrorKind::NotFound
);
}
#[rstest]
fn treats_unexpected_eof_as_corrupt() {
let error = AudioError::from(io::Error::from(ErrorKind::UnexpectedEof));
assert_matches!(
error,
AudioError::CorruptFile(message) if message == "Unexpected end of file."
);
}
}
#[rstest]
fn supports_partial_equality() {
assert_that!(AudioError::UnsupportedFileType).is_equal_to(AudioError::UnsupportedFileType);
assert_that!(AudioError::UnsupportedFileType)
.is_not_equal_to(AudioError::CorruptFile("".to_owned()));
assert_that!(AudioError::CorruptFile("Foo".to_owned()))
.is_equal_to(AudioError::CorruptFile("Foo".to_owned()));
assert_that!(AudioError::CorruptFile("Foo".to_owned()))
.is_not_equal_to(AudioError::CorruptFile("Bar".to_owned()));
assert_that!(AudioError::from(io::Error::from(ErrorKind::UnexpectedEof)))
.is_equal_to(AudioError::from(io::Error::from(ErrorKind::UnexpectedEof)));
assert_that!(AudioError::from(io::Error::new(
ErrorKind::UnexpectedEof,
"Foo"
)))
.is_equal_to(AudioError::from(io::Error::new(
ErrorKind::UnexpectedEof,
"Bar",
)));
assert_that!(AudioError::from(io::Error::from(ErrorKind::UnexpectedEof))).is_not_equal_to(
AudioError::from(io::Error::from(ErrorKind::ConnectionReset)),
);
}
}

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@ -0,0 +1,19 @@
#![warn(
rust_2018_idioms,
missing_debug_implementations,
missing_docs,
clippy::cast_lossless,
clippy::checked_conversions,
clippy::ptr_as_ptr,
clippy::unnecessary_self_imports,
clippy::use_self
)]
#![allow(clippy::module_inception)]
//! Audio library for use in Rhubarb Lip Sync.
mod audio_clip;
mod audio_error;
pub use audio_clip::{AudioClip, Sample, SampleReader};
pub use audio_error::AudioError;

2
settings.gradle.kts Normal file
View File

@ -0,0 +1,2 @@
rootProject.name = "rhubarb-lip-sync"
include("rhubarb:rhubarb-audio")