 # Building FreeDV GUI

This document describes how to build the FreeDV GUI program for various operating systems.  FreeDV GUI is developed on Ubuntu Linux, and then cross compiled for Windows using Fedora Linux (Fedora has great cross compiling support) and Docker.

## Further Reading

  * http://freedv.org - introduction, documentation, downloads
  * [FreeDV GUI User Manual](USER_MANUAL.md)
  * [Building for Windows using Docker](docker/README_docker.md)
  
## Building on Ubuntu Linux (16-20)
  ```
  $ sudo apt install libc6-i386 libspeexdsp-dev libsamplerate0-dev sox git \
  libwxgtk3.0-dev portaudio19-dev libhamlib-dev libasound2-dev libao-dev \
  libgsm1-dev libsndfile-dev cmake
  $ git clone https://github.com/drowe67/freedv-gui.git
  $ cd freedv-gui
  $ ./build_linux.sh
  ```
  (For Ubuntu 20.04 the wxWidgets package is named `libwxgtk3.0-gtk3-dev`.)
  
  Then run with:
  ```
  $ ./build_linux/src/freedv
  ```
  
  Note this builds all libraries locally, nothing is installed on your machine.  ```make install``` is not required.

## Building on Fedora Linux
  ```
  $ sudo dnf groupinstall "Development Tools"
  $ sudo dnf install cmake wxGTK3-devel portaudio-devel libsamplerate-devel \
    libsndfile-devel speexdsp-devel hamlib-devel alsa-lib-devel libao-devel \
    gsm-devel
  $ git clone https://github.com/drowe67/freedv-gui.git
  $ cd freedv-gui
  $ ./build_linux.sh
  ```
  Then run with:
  ```
  $ ./build_linux/src/freedv
  ```

## Installing on Linux

You need to install the codec2 and lpcnetfreedv shared libraries, and freedv-gui:
  ```
  $ cd ~/freedv-gui/codec2/build_linux
  $ sudo make install
  $ cd ~/freedv-gui/LPCNet/build_linux
  $ sudo make install
  $ cd ~/freedv-gui/build_linux
  $ sudo make install
  $ sudo ldconfig
  ```
  
## Testing

The ```wav``` directory contains test files of modulated audio that you can use to test FreeDV (see the [USER_MANUAL](USER_MANUAL.md)).

## Building for Windows using Docker

The Windows build process above has been automated using a Docker container, see the freedv-gui Docker [README](docker/README_docker.md).

## Building for Windows on Fedora (Cross compiling)

Install basic MinGW development packages:
```
  $ sudo dnf install mingw{32,64}-filesystem mingw{32,64}-binutils \
    mingw{32,64}-gcc mingw{32,64}-crt mingw{32,64}-headers mingw32-nsis
```

Install dependencies of FreeDV/Codec2:
```
  $ sudo dnf install mingw{32,64}-speex
```

Enable Freetel specific packages not currently in Fedora proper:
```
  $ sudo dnf install dnf-plugins-core
  $ sudo dnf copr enable hobbes1069/mingw
  $ sudo dnf install mingw{32,64}-wxWidgets3 mingw{32,64}-hamlib \
    mingw{32,64}-portaudio mingw{32,64}-libsndfile mingw{32,64}-libsamplerate.noarch
```

Clone freedv-gui:
```
  $ cd
  $ git clone https://github.com/drowe67/freedv-gui.git
```

Building FreeDV for 64 Bit windows:
```
  $ cd ~/freedv-gui
  $ ./build_windows.sh
  $ cd build_win64
  $ make package
```

**OR** Building FreeDV for 32 Bit windows:
```
  $ cd ~/freedv-gui
  $ CMAKE=mingw32-cmake ./build_windows.sh
  $ cd build_win32
  $ make package
```

### Testing Windows Build

Conveniently, it is possible to run Windows executables using Wine on Fedora:

Testing LPCNet:
```
  $ cd ~/freedv-gui/LPCNet/build_win/src
  $ WINEPATH=$HOME/freedv-gui/codec2/build_win/src';'$HOME/freedv-gui/build_win/_CPack_Packages/win64/NSIS/FreeDV-1.4.0-devel-win64/bin/ wine lpcnet_enc.exe --infile all.wav --outfile all.bit
  $ WINEPATH=$HOME/freedv-gui/codec2/build_win/src';'$HOME/freedv-gui/build_win/_CPack_Packages/win64/NSIS/FreeDV-1.4.0-devel-win64/bin/ wine lpcnet_dec.exe --infile all.bin --outfile all_out.raw
  $ cat all_out.raw | aplay -f S16_LE -r 16000

```

Testing FreeDV API:

```
  $ cd freedv-gui/codec2/build_win/src
  $ WINEPATH=$HOME/freedv-gui/LPCNet/build_win/src';'$HOME/freedv-gui/build_win/_CPack_Packages/win64/NSIS/FreeDV-1.4.0-devel-win64/bin/ wine freedv_rx 2020 ~/freedv-gui/wav/all_2020.wav out.raw
  $ play -t .s16 -r 16000 -b 16 out.raw
```

## Building and installing on OSX

Please see [README.osx](README.osx).

## Building and installing on FreeBSD

In ```build_linux.sh``` change the ```build_linux``` directory to build_freebsd.
