ExternalVendorCode/whisper.cpp
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Add Params#new_segment_callback= method

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Kitaiti Makoto 2024-10-18 01:23:12 +09:00
parent a5abfe6a90
commit 647c5f6788
2 changed files with 32 additions and 0 deletions
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31
bindings/ruby/ext/ruby_whisper.cpp
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@ -73,6 +73,7 @@ static VALUE ruby_whisper_params_allocate(VALUE klass) {
ruby_whisper_params *rwp;
rwp = ALLOC(ruby_whisper_params);
rwp->params = whisper_full_default_params(WHISPER_SAMPLING_GREEDY);
rwp->new_segment_callback = Qnil;
return Data_Wrap_Struct(klass, rb_whisper_params_mark, rb_whisper_params_free, rwp);
}
@ -205,6 +206,28 @@ static VALUE ruby_whisper_transcribe(int argc, VALUE *argv, VALUE self) {
};
rwp->params.encoder_begin_callback_user_data = &is_aborted;
}
{
// This cannot be used later because it is not incremented when new_segment_callback is not given.
static int n_segments = 0;
rwp->params.new_segment_callback = [](struct whisper_context * ctx, struct whisper_state * state, int n_new, void * user_data) {
VALUE callback = *(VALUE *)user_data;
if (NIL_P(callback)){
return;
}
for (int i = 0; i < n_new; i++) {
const int i_segment = n_segments + i;
const char * text = whisper_full_get_segment_text_from_state(state, i_segment);
// Multiplying 10 shouldn't cause overflow because to_timestamp() in whisper.cpp does it
const int64_t t0 = whisper_full_get_segment_t0_from_state(state, i_segment) * 10;
const int64_t t1 = whisper_full_get_segment_t1_from_state(state, i_segment) * 10;
rb_funcall(callback, rb_intern("call"), 4, rb_str_new2(text), INT2NUM(t0), INT2NUM(t1), INT2FIX(i_segment));
}
n_segments += n_new;
};
rwp->params.new_segment_callback_user_data = &rwp->new_segment_callback;
}
if (whisper_full_parallel(rw->context, rwp->params, pcmf32.data(), pcmf32.size(), 1) != 0) {
fprintf(stderr, "failed to process audio\n");
@ -365,6 +388,12 @@ static VALUE ruby_whisper_params_set_max_text_tokens(VALUE self, VALUE value) {
rwp->params.n_max_text_ctx = NUM2INT(value);
return value;
}
static VALUE ruby_whisper_params_set_new_segment_callback(VALUE self, VALUE value) {
ruby_whisper_params *rwp;
Data_Get_Struct(self, ruby_whisper_params, rwp);
rwp->new_segment_callback = value;
return value;
}
void Init_whisper() {
mWhisper = rb_define_module("Whisper");
@ -412,6 +441,8 @@ void Init_whisper() {
rb_define_method(cParams, "max_text_tokens", ruby_whisper_params_get_max_text_tokens, 0);
rb_define_method(cParams, "max_text_tokens=", ruby_whisper_params_set_max_text_tokens, 1);
rb_define_method(cParams, "new_segment_callback=", ruby_whisper_params_set_new_segment_callback, 1);
}
#ifdef __cplusplus
}

1
bindings/ruby/ext/ruby_whisper.h
View File

@ -10,6 +10,7 @@ typedef struct {
typedef struct {
struct whisper_full_params params;
bool diarize;
VALUE new_segment_callback;
} ruby_whisper_params;
#endif