73a8c5fb94
* whisper : remove whisper_load_backends function This commit removes the `whisper_load_backends` function, which was used to load all GGML backends. The motivation for this change push the responsibility of loading backends to user applications to give them more control over which backends to load and when. See the references below for more context. Resolves: https://github.com/ggml-org/whisper.cpp/issues/3182 Refs: https://github.com/ggml-org/whisper.cpp/pull/3042#issuecomment-2801778733 Refs: https://github.com/ggml-org/whisper.cpp/pull/3042#issuecomment-2801928990 * ruby : add check for rwc is NULL This commit adds a check to ensure that the `rwc` pointer is not NULL before attempting to mark its members in the garbage collector. The motivation for this is an attempt to see if this fixed the CI build as I'm not able to reproduce the issue locally. Refs: https://github.com/ggml-org/whisper.cpp/actions/runs/15299612277/job/43036694928?pr=3196
whisper.cpp/examples/command
This is a basic Voice Assistant example that accepts voice commands from the microphone. More info is available in issue #171.
# Run with default arguments and small model
./whisper-command -m ./models/ggml-small.en.bin -t 8
# On Raspberry Pi, use tiny or base models + "-ac 768" for better performance
./whisper-command -m ./models/ggml-tiny.en.bin -ac 768 -t 3 -c 0
https://user-images.githubusercontent.com/1991296/204038393-2f846eae-c255-4099-a76d-5735c25c49da.mp4
Web version: examples/command.wasm
Guided mode
"Guided mode" allows you to specify a list of commands (i.e. strings) and the transcription will be guided to classify your command into one from the list. This can be useful in situations where a device is listening only for a small subset of commands.
Initial tests show that this approach might be extremely efficient in terms of performance, since it integrates very well with the "partial Encoder" idea from #137.
# Run in guided mode, the list of allowed commands is in commands.txt
./whisper-command -m ./models/ggml-base.en.bin -cmd ./examples/command/commands.txt
# On Raspberry Pi, in guided mode you can use "-ac 128" for extra performance
./whisper-command -m ./models/ggml-tiny.en.bin -cmd ./examples/command/commands.txt -ac 128 -t 3 -c 0
https://user-images.githubusercontent.com/1991296/207435352-8fc4ed3f-bde5-4555-9b8b-aeeb76bee969.mp4
Building
The whisper-command tool depends on SDL2 library to capture audio from the microphone. You can build it like this:
# Install SDL2
# On Debian based linux distributions:
sudo apt-get install libsdl2-dev
# On Fedora Linux:
sudo dnf install SDL2 SDL2-devel
# Install SDL2 on Mac OS
brew install sdl2
cmake -B build -DWHISPER_SDL2=ON
cmake --build build --config Release