Waveform class

Audio waveform data in the audiowaveform format, suitable for visual rendering.

Constructors

Waveform({required int version, required int flags, required int sampleRate, required int samplesPerPixel, required int length, required List<int> data})

Properties

data → List<int>
A list of min/max pairs, each representing a pixel. For each pixel, the min/max pair represents the minimum and maximum sample over the samplesPerPixel range.
final
duration → Duration
The duration of audio, inferred from the length of the waveform data.
no setter
flags → int
A bit field where bit 0 indicates the resolution of each pixel value. 0 indicates 16-bit resolution, while 1 indicates 8-bit resolution.
final
hashCode → int
The hash code for this object.
no setterinherited
length → int
The number of pixels in the data.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
sampleRate → int
The sample rate in Hertz of the original audio.
final
samplesPerPixel → int
The number of samples captured for each pixel.
final
version → int
The format version.
final

Methods

getPixelMax(int i) → int
Returns the maximum sample for pixel i.
getPixelMin(int i) → int
Returns the minimum sample for pixel i.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
positionToPixel(Duration position) → double
Converts an audio position to a pixel position. The returned position is a double for accuracy, but can be converted toInt and used to access the nearest pixel value via getPixelMin/getPixelMax.
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited
operator [](int i) → int
Returns the data at index i, or zero when out of bounds.