Struct TTSQueueOutput 

pub struct TTSQueueOutput<T>
where
    T: Source + Send + Clone,
{
    pub current: SoundOrSilence<T>,
    pub current_signal: Option<Sender<bool>>,
    pub index: usize,
    pub input: Arc<TTSQueueInput<T>>,
    pub is_initial: bool,
}

TTS队列输出端

实现了Iterator和Source trait，可以作为音频源直接使用。 自动处理队列中音频片段的顺序播放。

泛型参数

• T - 音频源类型，必须实现Source、Send和Clone trait

Fields

current: SoundOrSilence<T>

当前正在播放的音频或静音片段

current_signal: Option<Sender<bool>>

当前音频片段关联的信号发送器 用于通知播放状态（开始/结束）

index: usize

当前播放片段在队列中的索引

input: Arc<TTSQueueInput<T>>

队列输入端的引用

is_initial: bool

是否为初始状态 初始状态下会播放索引为index的片段，而非index+1的片段

Implementations

impl<T> TTSQueueOutput<T>

where T: Source + Send + Clone,

pub fn new(input: Arc<TTSQueueInput<T>>, index: usize) -> Self

创建一个新的队列输出端

参数

• input - 队列输入端的引用
• index - 初始播放索引

返回值

• TTSQueueOutput<T> - 新创建的队列输出端

pub fn go_next(&mut self) -> Result<()>

切换到下一个音频片段

如果队列中还有下一个音频片段，则切换到该片段； 如果队列已完成且没有更多片段，则返回错误； 如果队列未完成但没有更多片段，则播放静音片段。

返回值

• Result<()> - 成功返回Ok，如果队列已完成且没有更多片段则返回Err

Trait Implementations

impl<T> Iterator for TTSQueueOutput<T>

where T: Source + Send + Clone,

type Item = f32

The type of the elements being iterated over.

fn next(&mut self) -> Option<Self::Item>

Advances the iterator and returns the next value.

fn size_hint(&self) -> (usize, Option<usize>)

Returns the bounds on the remaining length of the iterator.

fn next_chunk<const N: usize>( &mut self, ) -> Result<[Self::Item; N], IntoIter<Self::Item, N>>

where Self: Sized,

🔬This is a nightly-only experimental API. (iter_next_chunk)

Advances the iterator and returns an array containing the next N values.

fn count(self) -> usize

where Self: Sized,

Consumes the iterator, counting the number of iterations and returning it.

fn last(self) -> Option<Self::Item>

where Self: Sized,

Consumes the iterator, returning the last element.

fn advance_by(&mut self, n: usize) -> Result<(), NonZero<usize>>

🔬This is a nightly-only experimental API. (iter_advance_by)

Advances the iterator by n elements.

fn nth(&mut self, n: usize) -> Option<Self::Item>

Returns the nth element of the iterator.

fn step_by(self, step: usize) -> StepBy<Self>

where Self: Sized,

Creates an iterator starting at the same point, but stepping by the given amount at each iteration.

fn chain<U>(self, other: U) -> Chain<Self, <U as IntoIterator>::IntoIter>

where Self: Sized, U: IntoIterator<Item = Self::Item>,

Takes two iterators and creates a new iterator over both in sequence.

fn zip<U>(self, other: U) -> Zip<Self, <U as IntoIterator>::IntoIter>

where Self: Sized, U: IntoIterator,

‘Zips up’ two iterators into a single iterator of pairs.

fn intersperse(self, separator: Self::Item) -> Intersperse<Self>

where Self: Sized, Self::Item: Clone,

🔬This is a nightly-only experimental API. (iter_intersperse)

Creates a new iterator which places a copy of separator between items of the original iterator.

fn intersperse_with<G>(self, separator: G) -> IntersperseWith<Self, G>

where Self: Sized, G: FnMut() -> Self::Item,

🔬This is a nightly-only experimental API. (iter_intersperse)

Creates a new iterator which places an item generated by separator between items of the original iterator.

fn map<B, F>(self, f: F) -> Map<Self, F>

where Self: Sized, F: FnMut(Self::Item) -> B,

Takes a closure and creates an iterator which calls that closure on each element.

fn for_each<F>(self, f: F)

where Self: Sized, F: FnMut(Self::Item),

Calls a closure on each element of an iterator.

fn filter<P>(self, predicate: P) -> Filter<Self, P>

where Self: Sized, P: FnMut(&Self::Item) -> bool,

Creates an iterator which uses a closure to determine if an element should be yielded.

fn filter_map<B, F>(self, f: F) -> FilterMap<Self, F>

where Self: Sized, F: FnMut(Self::Item) -> Option<B>,

Creates an iterator that both filters and maps.

fn enumerate(self) -> Enumerate<Self>

where Self: Sized,

Creates an iterator which gives the current iteration count as well as the next value.

fn peekable(self) -> Peekable<Self>

where Self: Sized,

Creates an iterator which can use the peek and peek_mut methods to look at the next element of the iterator without consuming it. See their documentation for more information.

fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P>

where Self: Sized, P: FnMut(&Self::Item) -> bool,

Creates an iterator that skips elements based on a predicate.

fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P>

where Self: Sized, P: FnMut(&Self::Item) -> bool,

Creates an iterator that yields elements based on a predicate.

fn map_while<B, P>(self, predicate: P) -> MapWhile<Self, P>

where Self: Sized, P: FnMut(Self::Item) -> Option<B>,

Creates an iterator that both yields elements based on a predicate and maps.

fn skip(self, n: usize) -> Skip<Self>

where Self: Sized,

Creates an iterator that skips the first n elements.

fn take(self, n: usize) -> Take<Self>

where Self: Sized,

Creates an iterator that yields the first n elements, or fewer if the underlying iterator ends sooner.

fn scan<St, B, F>(self, initial_state: St, f: F) -> Scan<Self, St, F>

where Self: Sized, F: FnMut(&mut St, Self::Item) -> Option<B>,

An iterator adapter which, like fold, holds internal state, but unlike fold, produces a new iterator.

fn flat_map<U, F>(self, f: F) -> FlatMap<Self, U, F>

where Self: Sized, U: IntoIterator, F: FnMut(Self::Item) -> U,

Creates an iterator that works like map, but flattens nested structure.

fn flatten(self) -> Flatten<Self>

where Self: Sized, Self::Item: IntoIterator,

Creates an iterator that flattens nested structure.

fn map_windows<F, R, const N: usize>(self, f: F) -> MapWindows<Self, F, N>

where Self: Sized, F: FnMut(&[Self::Item; N]) -> R,

🔬This is a nightly-only experimental API. (iter_map_windows)

Calls the given function f for each contiguous window of size N over self and returns an iterator over the outputs of f. Like slice::windows(), the windows during mapping overlap as well.

fn fuse(self) -> Fuse<Self>

where Self: Sized,

Creates an iterator which ends after the first None.

fn inspect<F>(self, f: F) -> Inspect<Self, F>

where Self: Sized, F: FnMut(&Self::Item),

Does something with each element of an iterator, passing the value on.

fn by_ref(&mut self) -> &mut Self

where Self: Sized,

Creates a “by reference” adapter for this instance of Iterator.

fn collect<B>(self) -> B

where B: FromIterator<Self::Item>, Self: Sized,

Transforms an iterator into a collection.

fn try_collect<B>( &mut self, ) -> <<Self::Item as Try>::Residual as Residual<B>>::TryType

where Self: Sized, Self::Item: Try, <Self::Item as Try>::Residual: Residual<B>, B: FromIterator<<Self::Item as Try>::Output>,

🔬This is a nightly-only experimental API. (iterator_try_collect)

Fallibly transforms an iterator into a collection, short circuiting if a failure is encountered.

fn collect_into<E>(self, collection: &mut E) -> &mut E

where E: Extend<Self::Item>, Self: Sized,

🔬This is a nightly-only experimental API. (iter_collect_into)

Collects all the items from an iterator into a collection.

fn partition<B, F>(self, f: F) -> (B, B)

where Self: Sized, B: Default + Extend<Self::Item>, F: FnMut(&Self::Item) -> bool,

Consumes an iterator, creating two collections from it.

fn is_partitioned<P>(self, predicate: P) -> bool

where Self: Sized, P: FnMut(Self::Item) -> bool,

🔬This is a nightly-only experimental API. (iter_is_partitioned)

Checks if the elements of this iterator are partitioned according to the given predicate, such that all those that return true precede all those that return false.

fn try_fold<B, F, R>(&mut self, init: B, f: F) -> R

where Self: Sized, F: FnMut(B, Self::Item) -> R, R: Try<Output = B>,

An iterator method that applies a function as long as it returns successfully, producing a single, final value.

fn try_for_each<F, R>(&mut self, f: F) -> R

where Self: Sized, F: FnMut(Self::Item) -> R, R: Try<Output = ()>,

An iterator method that applies a fallible function to each item in the iterator, stopping at the first error and returning that error.

fn fold<B, F>(self, init: B, f: F) -> B

where Self: Sized, F: FnMut(B, Self::Item) -> B,

Folds every element into an accumulator by applying an operation, returning the final result.

fn reduce<F>(self, f: F) -> Option<Self::Item>

where Self: Sized, F: FnMut(Self::Item, Self::Item) -> Self::Item,

Reduces the elements to a single one, by repeatedly applying a reducing operation.

fn try_reduce<R>( &mut self, f: impl FnMut(Self::Item, Self::Item) -> R, ) -> <<R as Try>::Residual as Residual<Option<<R as Try>::Output>>>::TryType

where Self: Sized, R: Try<Output = Self::Item>, <R as Try>::Residual: Residual<Option<Self::Item>>,

🔬This is a nightly-only experimental API. (iterator_try_reduce)

Reduces the elements to a single one by repeatedly applying a reducing operation. If the closure returns a failure, the failure is propagated back to the caller immediately.

fn all<F>(&mut self, f: F) -> bool

where Self: Sized, F: FnMut(Self::Item) -> bool,

Tests if every element of the iterator matches a predicate.

fn any<F>(&mut self, f: F) -> bool

where Self: Sized, F: FnMut(Self::Item) -> bool,

Tests if any element of the iterator matches a predicate.

fn find<P>(&mut self, predicate: P) -> Option<Self::Item>

where Self: Sized, P: FnMut(&Self::Item) -> bool,

Searches for an element of an iterator that satisfies a predicate.

fn find_map<B, F>(&mut self, f: F) -> Option<B>

where Self: Sized, F: FnMut(Self::Item) -> Option<B>,

Applies function to the elements of iterator and returns the first non-none result.

fn try_find<R>( &mut self, f: impl FnMut(&Self::Item) -> R, ) -> <<R as Try>::Residual as Residual<Option<Self::Item>>>::TryType

where Self: Sized, R: Try<Output = bool>, <R as Try>::Residual: Residual<Option<Self::Item>>,

🔬This is a nightly-only experimental API. (try_find)

Applies function to the elements of iterator and returns the first true result or the first error.

fn position<P>(&mut self, predicate: P) -> Option<usize>

where Self: Sized, P: FnMut(Self::Item) -> bool,

Searches for an element in an iterator, returning its index.

fn max(self) -> Option<Self::Item>

where Self: Sized, Self::Item: Ord,

Returns the maximum element of an iterator.

fn min(self) -> Option<Self::Item>

where Self: Sized, Self::Item: Ord,

Returns the minimum element of an iterator.

fn max_by_key<B, F>(self, f: F) -> Option<Self::Item>

where B: Ord, Self: Sized, F: FnMut(&Self::Item) -> B,

Returns the element that gives the maximum value from the specified function.

fn max_by<F>(self, compare: F) -> Option<Self::Item>

where Self: Sized, F: FnMut(&Self::Item, &Self::Item) -> Ordering,

Returns the element that gives the maximum value with respect to the specified comparison function.

fn min_by_key<B, F>(self, f: F) -> Option<Self::Item>

where B: Ord, Self: Sized, F: FnMut(&Self::Item) -> B,

Returns the element that gives the minimum value from the specified function.

fn min_by<F>(self, compare: F) -> Option<Self::Item>

where Self: Sized, F: FnMut(&Self::Item, &Self::Item) -> Ordering,

Returns the element that gives the minimum value with respect to the specified comparison function.

fn unzip<A, B, FromA, FromB>(self) -> (FromA, FromB)

where FromA: Default + Extend<A>, FromB: Default + Extend<B>, Self: Sized + Iterator<Item = (A, B)>,

Converts an iterator of pairs into a pair of containers.

fn copied<'a, T>(self) -> Copied<Self>

where T: Copy + 'a, Self: Sized + Iterator<Item = &'a T>,

Creates an iterator which copies all of its elements.

fn cloned<'a, T>(self) -> Cloned<Self>

where T: Clone + 'a, Self: Sized + Iterator<Item = &'a T>,

Creates an iterator which clones all of its elements.

fn array_chunks<const N: usize>(self) -> ArrayChunks<Self, N>

where Self: Sized,

🔬This is a nightly-only experimental API. (iter_array_chunks)

Returns an iterator over N elements of the iterator at a time.

fn sum<S>(self) -> S

where Self: Sized, S: Sum<Self::Item>,

Sums the elements of an iterator.

fn product<P>(self) -> P

where Self: Sized, P: Product<Self::Item>,

Iterates over the entire iterator, multiplying all the elements.

fn cmp<I>(self, other: I) -> Ordering

where I: IntoIterator<Item = Self::Item>, Self::Item: Ord, Self: Sized,

Lexicographically compares the elements of this Iterator with those of another.

fn cmp_by<I, F>(self, other: I, cmp: F) -> Ordering

where Self: Sized, I: IntoIterator, F: FnMut(Self::Item, <I as IntoIterator>::Item) -> Ordering,

🔬This is a nightly-only experimental API. (iter_order_by)

Lexicographically compares the elements of this Iterator with those of another with respect to the specified comparison function.

fn partial_cmp<I>(self, other: I) -> Option<Ordering>

where I: IntoIterator, Self::Item: PartialOrd<<I as IntoIterator>::Item>, Self: Sized,

Lexicographically compares the PartialOrd elements of this Iterator with those of another. The comparison works like short-circuit evaluation, returning a result without comparing the remaining elements. As soon as an order can be determined, the evaluation stops and a result is returned.

fn partial_cmp_by<I, F>(self, other: I, partial_cmp: F) -> Option<Ordering>

where Self: Sized, I: IntoIterator, F: FnMut(Self::Item, <I as IntoIterator>::Item) -> Option<Ordering>,

🔬This is a nightly-only experimental API. (iter_order_by)

Lexicographically compares the elements of this Iterator with those of another with respect to the specified comparison function.

fn eq<I>(self, other: I) -> bool

where I: IntoIterator, Self::Item: PartialEq<<I as IntoIterator>::Item>, Self: Sized,

Determines if the elements of this Iterator are equal to those of another.

fn eq_by<I, F>(self, other: I, eq: F) -> bool

where Self: Sized, I: IntoIterator, F: FnMut(Self::Item, <I as IntoIterator>::Item) -> bool,

🔬This is a nightly-only experimental API. (iter_order_by)

Determines if the elements of this Iterator are equal to those of another with respect to the specified equality function.

fn ne<I>(self, other: I) -> bool

where I: IntoIterator, Self::Item: PartialEq<<I as IntoIterator>::Item>, Self: Sized,

Determines if the elements of this Iterator are not equal to those of another.

fn lt<I>(self, other: I) -> bool

where I: IntoIterator, Self::Item: PartialOrd<<I as IntoIterator>::Item>, Self: Sized,

Determines if the elements of this Iterator are lexicographically less than those of another.

fn le<I>(self, other: I) -> bool

where I: IntoIterator, Self::Item: PartialOrd<<I as IntoIterator>::Item>, Self: Sized,

Determines if the elements of this Iterator are lexicographically less or equal to those of another.

fn gt<I>(self, other: I) -> bool

where I: IntoIterator, Self::Item: PartialOrd<<I as IntoIterator>::Item>, Self: Sized,

Determines if the elements of this Iterator are lexicographically greater than those of another.

fn ge<I>(self, other: I) -> bool

where I: IntoIterator, Self::Item: PartialOrd<<I as IntoIterator>::Item>, Self: Sized,

Determines if the elements of this Iterator are lexicographically greater than or equal to those of another.

fn is_sorted(self) -> bool

where Self: Sized, Self::Item: PartialOrd,

Checks if the elements of this iterator are sorted.

fn is_sorted_by<F>(self, compare: F) -> bool

where Self: Sized, F: FnMut(&Self::Item, &Self::Item) -> bool,

Checks if the elements of this iterator are sorted using the given comparator function.

fn is_sorted_by_key<F, K>(self, f: F) -> bool

where Self: Sized, F: FnMut(Self::Item) -> K, K: PartialOrd,

Checks if the elements of this iterator are sorted using the given key extraction function.

impl<T> Source for TTSQueueOutput<T>

where T: Source + Send + Clone,

fn current_span_len(&self) -> Option<usize>

返回当前片段的跨度长度

该函数确定当前音频片段的跨度长度，用于音频处理中的缓冲区管理。 队列中两个音频片段之间的边界也应作为跨度边界处理。

确定跨度长度的优先级：

1. 当前音频片段提供的跨度长度（非零值）
2. 当队列为空且未完成时，使用静音片段长度
3. 使用音频片段的大小提示（正值）
4. 默认使用THRESHOLD常量

返回值

• Option<usize> - 当前片段的跨度长度

fn channels(&self) -> ChannelCount

返回音频的声道数

fn sample_rate(&self) -> SampleRate

返回音频的采样率

fn total_duration(&self) -> Option<Duration>

返回音频的总时长（无）

fn buffered(self) -> Buffered<Self>

where Self: Sized,

Stores the source in a buffer in addition to returning it. This iterator can be cloned.

fn mix<S>(self, other: S) -> Mix<Self, S>

where Self: Sized, S: Source,

Mixes this source with another one.

fn repeat_infinite(self) -> Repeat<Self>

where Self: Sized,

Repeats this source forever.

fn take_duration(self, duration: Duration) -> TakeDuration<Self>

where Self: Sized,

Takes a certain duration of this source and then stops.

fn delay(self, duration: Duration) -> Delay<Self>

where Self: Sized,

Delays the sound by a certain duration.

fn skip_duration(self, duration: Duration) -> SkipDuration<Self>

where Self: Sized,

Immediately skips a certain duration of this source.

fn amplify(self, value: f32) -> Amplify<Self>

where Self: Sized,

Amplifies the sound by the given value.

fn amplify_decibel(self, value: f32) -> Amplify<Self>

where Self: Sized,

Amplifies the sound logarithmically by the given value.

fn amplify_normalized(self, value: f32) -> Amplify<Self>

where Self: Sized,

Normalized amplification in [0.0, 1.0] range. This method better matches the perceived loudness of sounds in human hearing and is recommended to use when you want to change volume in [0.0, 1.0] range. based on article: https://www.dr-lex.be/info-stuff/volumecontrols.html

fn automatic_gain_control( self, target_level: f32, attack_time: f32, release_time: f32, absolute_max_gain: f32, ) -> AutomaticGainControl<Self>

where Self: Sized,

Applies automatic gain control to the sound.

fn take_crossfade_with<S>( self, other: S, duration: Duration, ) -> Mix<TakeDuration<Self>, FadeIn<TakeDuration<S>>>

where S: Source, Self: Sized, Self::Item: FromSample<<S as Iterator>::Item>,

Mixes this sound fading out with another sound fading in for the given duration.

fn fade_in(self, duration: Duration) -> FadeIn<Self>

where Self: Sized,

Fades in the sound.

fn fade_out(self, duration: Duration) -> FadeOut<Self>

where Self: Sized,

Fades out the sound.

fn limit(self, settings: LimitSettings) -> Limit<Self>

where Self: Sized,

Applies limiting to prevent audio peaks from exceeding a threshold.

fn linear_gain_ramp( self, duration: Duration, start_value: f32, end_value: f32, clamp_end: bool, ) -> LinearGainRamp<Self>

where Self: Sized,

Applies a linear gain ramp to the sound.

fn periodic_access<F>( self, period: Duration, access: F, ) -> PeriodicAccess<Self, F>

where Self: Sized, F: FnMut(&mut Self),

Calls the access closure on Self the first time the source is iterated and every time period elapses.

fn speed(self, ratio: f32) -> Speed<Self>

where Self: Sized,

Changes the play speed of the sound. Does not adjust the samples, only the playback speed.

fn pausable(self, initially_paused: bool) -> Pausable<Self>

where Self: Sized,

Makes the sound pausable.

fn stoppable(self) -> Stoppable<Self>

where Self: Sized,

Makes the sound stoppable.

fn skippable(self) -> Skippable<Self>

where Self: Sized,

Adds a method Skippable::skip for skipping this source. Skipping makes Source::next() return None. Which in turn makes the Sink skip to the next source.

fn track_position(self) -> TrackPosition<Self>

where Self: Sized,

Start tracking the elapsed duration since the start of the underlying source.

fn low_pass(self, freq: u32) -> BltFilter<Self>

where Self: Sized + Source<Item = f32>,

Applies a low-pass filter to the source. Warning: Probably buggy.

fn high_pass(self, freq: u32) -> BltFilter<Self>

where Self: Sized + Source<Item = f32>,

Applies a high-pass filter to the source.

fn low_pass_with_q(self, freq: u32, q: f32) -> BltFilter<Self>

where Self: Sized + Source<Item = f32>,

Applies a low-pass filter to the source while allowing the q (bandwidth) to be changed.

fn high_pass_with_q(self, freq: u32, q: f32) -> BltFilter<Self>

where Self: Sized + Source<Item = f32>,

Applies a high-pass filter to the source while allowing the q (bandwidth) to be changed.

fn distortion(self, gain: f32, threshold: f32) -> Distortion<Self>

where Self: Sized,

Applies a distortion effect to the sound.

fn try_seek(&mut self, pos: Duration) -> Result<(), SeekError>

Attempts to seek to a given position in the current source.