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# atracdenc - ATRAC Decoder Encoder
It is free LGPL implementation of ATRAC1, ATRAC3 encoders.
Building:
You need:
* C++17 compiler.
* CMake >= 3.1.
* PCM input/output backend:
* `libsndfile` on Linux and MSYS2.
* Media Foundation on Windows with MSVC.
* Python 3 (optional, only required to run the integration tests).
If the source was cloned with git, fetch submodules first:
```
git submodule update --init --recursive
```
The PCM backend can be selected with `ATRACDENC_PCM_IO_BACKEND`.
Supported values are `auto`, `mediafoundation`, and `libsndfile`.
The default is `mediafoundation` for MSVC Windows builds and `libsndfile`
everywhere else.
Linux, Debian/Ubuntu based:
```
sudo apt update
sudo apt install -y build-essential cmake libsndfile1-dev python3 googletest libgtest-dev
cmake -S . -B build -DCMAKE_BUILD_TYPE=Release -DATRACDENC_PCM_IO_BACKEND=libsndfile
cmake --build build -j"$(nproc)"
ctest --test-dir build --output-on-failure
```
The binary is created at `build/src/atracdenc`.
Windows, MSYS2 MinGW64:
Run the commands from the `MSYS2 MinGW x64` shell.
```
pacman -S --needed \
git \
mingw-w64-x86_64-cmake \
mingw-w64-x86_64-gcc \
mingw-w64-x86_64-gtest \
mingw-w64-x86_64-libsndfile \
mingw-w64-x86_64-ninja \
mingw-w64-x86_64-python
cmake -S . -B build-msys2 -G Ninja \
-DCMAKE_BUILD_TYPE=Release \
-DATRACDENC_PCM_IO_BACKEND=libsndfile
cmake --build build-msys2
ctest --test-dir build-msys2 --output-on-failure
```
The binary is created at `build-msys2/src/atracdenc.exe`.
To create a redistributable directory with required MSYS2 runtime DLLs and
license files:
```
bash tools/package-msys2-runtime.sh build-msys2/src/atracdenc.exe dist-msys2
```
Windows, MSVC:
Install Visual Studio or Visual Studio Build Tools with the C++ desktop
workload. Run the commands from an `x64 Native Tools Command Prompt for VS`.
```
cmake -S . -B build-msvc -G "Visual Studio 17 2022" -A x64 ^
-DATRACDENC_PCM_IO_BACKEND=mediafoundation
cmake --build build-msvc --config Release
ctest --test-dir build-msvc -C Release --output-on-failure
```
The binary is created at `build-msvc/src/Release/atracdenc.exe`.
Usage:
By default the output container is selected from the output file extension.
Use `--container {aea|oma|riff|rm|raw}` to select it explicitly.
Valid combinations are ATRAC1: AEA/RAW, ATRAC3: OMA/RIFF/RM/RAW,
and ATRAC3PLUS: OMA/RIFF/RAW.
ATRAC1:
```
./atracdenc -e atrac1 -i ~/01.wav -o /tmp/01.aea
```
ATRAC3:
```
./atracdenc -e atrac3 -i ~/01.wav -o /tmp/01.oma
```
ATRAC3PLUS:
```
./atracdenc -e atrac3plus -i ~/01.wav -o /tmp/01.oma
```
More information on the [atracdenc man page](https://code.mastervirt.ru/atracdenc/about/man/atracdenc.1)
Limitations:
- Only 44100 16bit wav input file
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