https://github.com/andrewrk/libebur128

libebur128 with the build system replaced by zig
https://github.com/andrewrk/libebur128

Last synced: 3 months ago
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libebur128 with the build system replaced by zig

• Host: GitHub
• URL: https://github.com/andrewrk/libebur128
• Owner: andrewrk
• License: mit
• Fork: true (jiixyj/libebur128)
• Created: 2014-02-17T03:03:18.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2023-12-05T23:37:24.000Z (11 months ago)
• Last Synced: 2024-05-14T00:21:21.755Z (6 months ago)
• Language: C
• Homepage:
• Size: 1.05 MB
• Stars: 0
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: COPYING

Awesome Lists containing this project

• awesome-zig - libebur128

README

        
This is a fork of [libebur128](https://github.com/jiixyj/libebur128), packaged

for Zig. Unnecessary files have been deleted, and the build system has been

replaced with `build.zig`.

Original README follows:

============================================================================

libebur128

==========

libebur128 is a library that implements the EBU R 128 standard for loudness

normalisation.

All source code is licensed under the MIT license. See COPYING file for

details.

See also [loudness-scanner tool](https://github.com/jiixyj/loudness-scanner).

News

----

v1.2.6 released:

 * Fix dynamic linking on Windows.

v1.2.5 released:

 * Remove `BUILD_STATIC_LIBS` build option. Instead the CMake-supported

   `BUILD_SHARED_LIBS` option is now honored as expected.

 * Various code cleanups, warning fixes and documentation improvements

 * Fix issue related to filter state indexing with high channel enums (#77)

 * Introduce limits for number of channels and maximum supported samplerate to

   avoid integer overflows

 * Fix error return code of `ebur128_set_channel`. The actual behavior is now

   aligned to the documentation (#90).

v1.2.4 released:

 * Fix broken `ebur128_loudness_global_multiple()` function. Since v1.1.0 it

   calculated the relative threshold just from the last state given to it,

   resulting in wrong values.

 * More tests

 * Fix some minor build issues

 * Fix uninitialized memory in `ebur128_init()`, possibly resulting in wrong

   values

v1.2.3 released:

 * Fix uninitialized memory access during true peak scanning (bug #72)

v1.2.2 released (v1.2.1 was mistagged):

 * Fix a null pointer dereference when doing true peak scanning of 192kHz data

v1.2.0 released:

 * New functions for real time loudness/peak monitoring:

   * `ebur128_loudness_window()`

   * `ebur128_set_max_window()`

   * `ebur128_set_max_history()`

   * `ebur128_prev_sample_peak()`

   * `ebur128_prev_true_peak()`

 * New FIR resampler for true peak calculation, removing Speex dependency

 * Add true peak conformance tests

 * Bug fixes

v1.1.0 released:

 * Add `ebur128_relative_threshold()`

 * Add channel definitions from ITU R-REC-BS 1770-4 to channel enum

 * Fix some minor build issues

v1.0.3 released:

 * Fix build with recent speexdsp

 * Correct license file name

 * CMake option to disable static library

 * minimal-example.c: do not hard code program name in usage

Features

--------

* Portable ANSI C code

* Implements M, S and I modes

* Implements loudness range measurement (EBU - TECH 3342)

* True peak scanning

* Supports all samplerates by recalculation of the filter coefficients

Installation

------------

In the root folder, type:

    mkdir build

    cd build

    cmake ..

    make

If you want the git version, run simply:

    git clone git://github.com/jiixyj/libebur128.git

Usage

-----

Library usage should be pretty straightforward. All exported symbols are

documented in the ebur128.h header file. For a usage example, see

minimal-example.c in the tests folder.

On some operating systems, static libraries should be compiled as position

independent code. You can enable that by turning on `WITH_STATIC_PIC`.