Index of values

add b1 o1 b2 o2 len adds len samples of contents of b2 starting at o2 to b1 starting at o1.

Apply an affine transformation to an image.

Amplify a portion of the buffer by a given coefficient.

Concatenate two buffers.

Frequency associated to the k-th coefficient of an FFT.

Clear an image (sets it to black).

Blitting function.

Same as Array.blit for audio data.

blit_all src dst copies all the contents of src into dst.

Clear a portion of a buffer (fill it with zeroes).

Clear the buffer (sets all the samples to zero).

Clip a sample (ie ensure that it is between -1. and 1..

A compander following the mu-law (see http://en.wikipedia.org/wiki/Mu-law).

complex_create buf ofs len create a array of complex numbers of size len by copying data from buf from ofset ofs (the imaginary part is null).

Convert a generic image from a format to another.

Create a fresh copy of a buffer.

Copy the given buffer.

Create a copy of a MIDI buffer.

Create a buffer with a given number of frames.

Generate an element.

Create an image of given width and height.

Create a ringbuffer of given number of channels and size (in samples).

Create an extensible buffer of given channels and initial size in samples.

Create a ringbuffer of given size.

create chans len creates a buffer with chans channels and len samples as duration.

Create a multitrack MIDI buffer with given number of channels and length in samples.

Create a MIDI buffer of given length in samples.

Create a buffer with the same number of channels and duration as the given buffer.

Convert linear coefficient to decibels.

delay chans samplerate d once feedback creates a delay operator for buffer with chans channels at samplerate samplerate with d as delay in seconds and feedback as feedback.

Current duration (in samples) of the buffer.

Duration of the FFT buffer analysis in samples.

Duration of a buffer in samples.

Perform an FFT analysis.

Flip (mirror across horizontal axis).

Convert to greyscale.

Height of an image.

Height of an image.

Initial state for processing.

Initialize FFT for an analysis of 2^n samples.

Invert colors.

Convert decibels to linear coefficient.

Lomo effect on colors (see http://en.wikipedia.org/wiki/Lomo_effect ).

Create a buffer with a given number of frames of given size.

Create an envelope with specified Attack/Decay/Sustain/Release times in seconds (excepting sustain which is an amplification coefficient between 0. and 1.).

Create a new image of RGB format.

merge b1 b2 merges the buffer b2 into b1.

Returns note number and octave.

Create a generic image from an RGBA32 image.

Create a generic image from a YUV420 image.

Decode a color stored as RGB.

Convert a mono buffer into a buffer.

Pan a stereo buffer from left to right (the buffer should have exactly two channels!).

Same as read but does not advance the read pointer.

Pixel format of an image.

Make sure that the buffer can hold at least a given number of samples.

Read data.

Drop data.

Size of data available for reading.

Data and stride of an RGB image.

Compute the RMS power of a portion of a buffer.

Rotate image by a given angle (in radians).

At given sample rate, number of samples in given amount of time.

Scale alpha channel with a given coefficient.

At given sample rate, duration of given number of samples.

Convert to sepia colors.

Size of the buffer in frames.

String representation of the format of a pixel.

Swap red and blue channels.

Convert a frame rate to a fraction.

Convert a buffer to a mono buffer by computing the mean of all channels.

Translate image.

Read all the data in the ringbuffer.

Width of an image.

Width of an image.

Write data.

Advance the write pointer.

Size of space available for writing.

Data of a YUV image.