• This repository has been archived on 28/Mar/2022
  • Stars
    star
    948
  • Rank 46,610 (Top 1.0 %)
  • Language
    C++
  • License
    Other
  • Created about 13 years ago
  • Updated about 2 years ago

Reviews

There are no reviews yet. Be the first to send feedback to the community and the maintainers!

Repository Details

Codegen for Echoprint

Codegen for Echoprint

Note: This project is no longer actively maintained

Echoprint is an open source music fingerprint and resolving framework powered by the The Echo Nest. The code generator (library to convert PCM samples from a microphone or file into Echoprint codes) is open source (MIT licensed) and free for any use. The server component that stores and resolves queries is open source (Apache 2 licensed) and free for any use. The data for resolving to millions of songs is free for any use provided any changes or additions are merged back to the community.

Read more about Echoprint here

There are two modes of operation of the Echoprint codegen:

  1. the codegen library (libcodegen) is meant to be linked into code that passes it a buffer of PCM data and will output a code string.

  2. the codegen binary runs standalone, accepts filenames as inputs and runs in a multithreaded worker mode.

Requirements

For libcodegen

  • Boost >= 1.35
  • zlib

Additional requirements for the codegen binary

  • TagLib
  • ffmpeg - this is called via shell and is not linked into codegen

On Ubuntu or Debian you can install these dependencies with:

sudo apt-get install ffmpeg libboost1.42-dev libtag1-dev zlib1g-dev

On OS-X with homebrew you can use:

brew install ffmpeg boost taglib

On Windows:

Refer to the documentation under the windows folder for more specifics.

The binary generated in Windows will be named codegen by default where as on Linux or Mac OS-X it is named echoprint-codegen.

Notes about libcodegen:

Code generation takes a buffer of floating point PCM data sampled at 11025 Hz and mono.

Codegen * pCodegen = new Codegen(const float* pcm, uint numSamples, int start_offset);

pcm: a buffer of floats, mono, 11025 Hz
numSamples: the number of samples
start_offset: creates a hint to the server on where the sample is taken from in the original file if known

string code = pCodegen->getCodeString(); 

The code string is just a base64 encoding of a zlib compression of the original code string, which is a hex encoded series of ASCII numbers. See API/fp.py in echoprint-server for decoding help.

You only need to query for 20 seconds of audio to get a result.

Notes about the codegen binary

The makefile builds an example code generator that uses libcodegen, called "codegen." This code generator has more features -- it will output ID3 tag information and uses ffmpeg to decode any type of file. If you don't need to compile libcodegen into your app you can rely on this. Note that you need to have ffmpeg installed and accessible on your path for this to work.

./echoprint-codegen billie_jean.mp3 10 30

Will take 30 seconds of audio from 10 seconds into the file and output JSON suitable for querying:

{"metadata":{"artist":"Michael jackson", "release":"800 chansons des annes 80", "title":"Billie jean", "genre":"", "bitrate":192, "sample_rate":44100, "seconds":294, "filename":"billie_jean.mp3", "samples_decoded":220598, "given_duration":30, "start_offset":10, "version":4.00}, "code_count":846, "code":"JxVlIuNwzAMQ1fxCDL133+xo1rnGqNAEcWy/ERa2aKeZmW...

You can host your own Echoprint server and ingest or query to that.

Codegen also runs in a multithreaded mode for bulk resolving:

./echoprint-codegen -s 10 30 < file_list

Will compute codes for every file in file_list for 30 seconds starting at 10 seconds. (It tries to be smart about the number of threads to use.) It will output a JSON list.

Statistics

Speed

Codegen scans audio at roughly 250x real time per processor after decoding and resampling to 11025 Hz. This means a full song can be scanned in less than 0.5s on an average computer, and an amount of audio suitable for querying (30s) can be scanned in less than 0.04s.

Decoding from MP3 will be the bottleneck for most implementations. Decoders like mpg123 or ffmpeg can decode 30s mp3 audio to 11025 PCM in under 0.10s.

clump:echoprint-codegen bwhitman$ time mpg123 -q -s -4 -n 1200 song.mp3  > /dev/null
real        0m0.079s
user        0m0.067s
sys         0m0.007s

Accuracy

Look at http://echoprint.me for information on the accuracy of the echoprint system.

FAQ

Q: I get "Couldn't decode any samples with: ffmpeg" when running codegen

A: When running the example code generator (echoprint-codegen) make sure ffmpeg is accessible to your path. Try running ffmpeg filename.mp3 on the file you are testing the code generator with. If it doesn't work, codegen won't work.

More Repositories

1

luigi

Luigi is a Python module that helps you build complex pipelines of batch jobs. It handles dependency resolution, workflow management, visualization etc. It also comes with Hadoop support built in.
Python
17,340
star
2

annoy

Approximate Nearest Neighbors in C++/Python optimized for memory usage and loading/saving to disk
C++
12,751
star
3

docker-gc

INACTIVE: Docker garbage collection of containers and images
Shell
5,068
star
4

pedalboard

🎛 🔊 A Python library for audio.
C++
4,880
star
5

chartify

Python library that makes it easy for data scientists to create charts.
Python
3,486
star
6

basic-pitch

A lightweight yet powerful audio-to-MIDI converter with pitch bend detection
Python
2,972
star
7

dockerfile-maven

MATURE: A set of Maven tools for dealing with Dockerfiles
Java
2,737
star
8

docker-maven-plugin

INACTIVE: A maven plugin for Docker
Java
2,652
star
9

scio

A Scala API for Apache Beam and Google Cloud Dataflow.
Scala
2,485
star
10

helios

Docker container orchestration platform
Java
2,097
star
11

web-api-examples

Basic examples to authenticate and fetch data using the Spotify Web API
HTML
1,889
star
12

HubFramework

DEPRECATED – Spotify’s component-driven UI framework for iOS
Objective-C
1,863
star
13

apollo

Java libraries for writing composable microservices
Java
1,648
star
14

dh-virtualenv

Python virtualenvs in Debian packages
Python
1,601
star
15

docker-client

INACTIVE: A simple docker client for the JVM
Java
1,426
star
16

docker-kafka

Kafka (and Zookeeper) in Docker
Shell
1,400
star
17

SPTPersistentCache

Everyone tries to implement a cache at some point in their iOS app’s lifecycle, and this is ours.
Objective-C
1,243
star
18

mobius

A functional reactive framework for managing state evolution and side-effects.
Java
1,209
star
19

voyager

🛰️ An approximate nearest-neighbor search library for Python and Java with a focus on ease of use, simplicity, and deployability.
C++
1,175
star
20

sparkey

Simple constant key/value storage library, for read-heavy systems with infrequent large bulk inserts.
C
1,149
star
21

ruler

Gradle plugin which helps you analyze the size of your Android apps.
Kotlin
1,107
star
22

XCMetrics

XCMetrics is the easiest way to collect Xcode build metrics and improve developer productivity.
Swift
1,089
star
23

web-api

This issue tracker is no longer used. Join us in the Spotify for Developers forum for support with the Spotify Web API ➡️ https://community.spotify.com/t5/Spotify-for-Developers/bd-p/Spotify_Developer
RAML
981
star
24

snakebite

A pure python HDFS client
Python
858
star
25

heroic

The Heroic Time Series Database
Java
843
star
26

klio

Smarter data pipelines for audio.
Python
831
star
27

XCRemoteCache

Swift
821
star
28

ios-sdk

Spotify SDK for iOS
Objective-C
627
star
29

apps-tutorial

A Spotify App that contains working examples of the use of Spotify Apps API
627
star
30

SPTDataLoader

The HTTP library used by the Spotify iOS client
Objective-C
625
star
31

postgresql-metrics

Tool that extracts and provides metrics on your PostgreSQL database
Python
588
star
32

JniHelpers

Tools for writing great JNI code
C++
587
star
33

Mobius.swift

A functional reactive framework for managing state evolution and side-effects [Swift implementation]
Swift
551
star
34

reactochart

📈 React chart component library 📉
JavaScript
548
star
35

dockerfile-mode

An emacs mode for handling Dockerfiles
Emacs Lisp
525
star
36

threaddump-analyzer

A JVM threaddump analyzer
JavaScript
483
star
37

featran

A Scala feature transformation library for data science and machine learning
Scala
465
star
38

android-sdk

Spotify SDK for Android
HTML
449
star
39

echoprint-server

Server for the Echoprint audio fingerprint system
Java
396
star
40

completable-futures

Utilities for working with futures in Java 8
Java
382
star
41

web-scripts

DEPRECATED: A collection of base configs and CLI wrappers used to speed up development @ Spotify.
TypeScript
381
star
42

SpotifyLogin

Swift framework for authenticating with the Spotify API
Swift
346
star
43

ratatool

A tool for data sampling, data generation, and data diffing
Scala
337
star
44

fmt-maven-plugin

Opinionated Maven Plugin that formats your Java code.
Java
309
star
45

spotify-web-api-ts-sdk

A Typescript SDK for the Spotify Web API with types for returned data.
TypeScript
290
star
46

big-data-rosetta-code

Code snippets for solving common big data problems in various platforms. Inspired by Rosetta Code
Scala
287
star
47

trickle

A small library for composing asynchronous code
Java
284
star
48

coordinator

A visual interface for turning an SVG into XY coördinates.
HTML
283
star
49

pythonflow

🐍 Dataflow programming for python.
Python
281
star
50

styx

"The path to execution", Styx is a service that schedules batch data processing jobs in Docker containers on Kubernetes.
Java
266
star
51

cstar

Apache Cassandra cluster orchestration tool for the command line
Python
254
star
52

netty-zmtp

A Netty implementation of ZMTP, the ZeroMQ Message Transport Protocol.
Java
242
star
53

ios-style

Guidelines for iOS development in use at Spotify
241
star
54

confidence

Python
238
star
55

cassandra-reaper

Software to run automated repairs of cassandra
235
star
56

docker-cassandra

Cassandra in Docker with fast startup
Shell
219
star
57

terraform-gke-kubeflow-cluster

Terraform module for creating GKE clusters to run Kubeflow
HCL
209
star
58

basic-pitch-ts

A lightweight yet powerful audio-to-MIDI converter with pitch bend detection.
TypeScript
206
star
59

linux

Spotify's Linux kernel for Debian-based systems
C
204
star
60

dns-java

DNS wrapper library that provides SRV lookup functionality
Java
203
star
61

git-test

test your commits
Shell
202
star
62

SPStackedNav

[DEPRECATED] Navigation controller which represents its content in stacks of panes, rather than one at a time
Objective-C
195
star
63

quickstart

A CommonJS module resolver, loader and compiler for node.js and browsers.
JavaScript
193
star
64

spotify-json

Fast and nice to use C++ JSON library.
C++
191
star
65

dbeam

DBeam exports SQL tables into Avro files using JDBC and Apache Beam
Java
188
star
66

flink-on-k8s-operator

Kubernetes operator for managing the lifecycle of Apache Flink and Beam applications.
Go
180
star
67

lingon

A user friendly tool for building single-page JavaScript applications
JavaScript
162
star
68

bazel-tools

Tools for dealing with very large Bazel-managed repositories
Java
162
star
69

dataenum

Algebraic data types in Java.
Java
161
star
70

magnolify

A collection of Magnolia add-on modules
Scala
158
star
71

async-google-pubsub-client

[SUNSET] Async Google Pubsub Client
Java
157
star
72

gcp-audit

A tool for auditing security properties of GCP projects.
Python
156
star
73

spark-bigquery

Google BigQuery support for Spark, SQL, and DataFrames
Scala
155
star
74

should-up

Remove most of the "should" noise from your tests
JavaScript
150
star
75

flo

A lightweight workflow definition library
Java
146
star
76

folsom

An asynchronous memcache client for Java
Java
144
star
77

missinglink

Build time tool for detecting link problems in java projects
Java
142
star
78

android-auth

Spotify authentication and authorization for Android. Part of the Spotify Android SDK.
HTML
140
star
79

proto-registry

An implementation of the Protobuf Registry API
TypeScript
140
star
80

zoltar

Common library for serving TensorFlow, XGBoost and scikit-learn models in production.
Java
138
star
81

futures-extra

Java library for working with Guava futures
Java
135
star
82

annoy-java

Approximate nearest neighbors in Java
Java
134
star
83

spydra

Ephemeral Hadoop clusters using Google Compute Platform
Java
133
star
84

spotify-web-playback-sdk-example

React based example app that creates a new player in Spotify Connect to play music from in the browse using Spotify Web Playback SDK.
JavaScript
129
star
85

docker-stress

Simple docker stress test and monitoring tools
Python
125
star
86

spotify-tensorflow

Provides Spotify-specific TensorFlow helpers
Python
124
star
87

crtauth

a public key backed client/server authentication system
Python
118
star
88

redux-location-state

Utilities for reading & writing Redux store state to & from the URL
JavaScript
118
star
89

sparkey-java

Java implementation of the Sparkey key value store
Java
117
star
90

github-java-client

A Java client to Github API
Java
114
star
91

realbook

Easier audio-based machine learning with TensorFlow.
Python
109
star
92

rspec-dns

Easily test your DNS with RSpec
Ruby
107
star
93

web-playback-sdk

This issue tracker is no longer used. Join us in the Spotify for Developers forum for support with the Spotify Web Playback SDK ➡️ https://community.spotify.com/t5/Spotify-for-Developers/bd-p/Spotify_Developer
107
star
94

ffwd-ruby

An event and metrics fast-forwarding agent.
Ruby
106
star
95

gimme

Creating time bound IAM Conditions with ease and flair
Python
103
star
96

super-smash-brogp

Sends and withdraws BGP prefixes for fun.
Python
98
star
97

lighthouse-audit-service

TypeScript
93
star
98

noether

Scala Aggregators used for ML Model metrics monitoring
Scala
91
star
99

python-graphwalker

Python re-implementation of the graphwalker testing tool
Python
91
star
100

spotify.github.io

Showcase site for hand-picked open-source projects by Spotify
HTML
88
star