021eef1000
* Add tests for Whisper::Context#full * Add Whisper::Context#full * Add tests for Whisper::Error * Add document of Whisper::Context#full [skip ci] * Add additional signature for Whisper::Context#full * Add description to Whisper::Context#full * Add test for Whisper::Context#full_parallel * Add Whisper::Context#full_parallel * Hide Whisper's instance methods from Ruby code * Add class to test MemoryView * Build test class before running test * Add test for MemoryView * Make Whisper::Context#full and #full_parallel accept MemoryView * Use Ruby 3.1 on CI * Add comment on samples data type * Update README * Update README * Remove unused code
109 lines
2.6 KiB
C
109 lines
2.6 KiB
C
#include <ruby.h>
|
|
#include <ruby/memory_view.h>
|
|
#include <ruby/encoding.h>
|
|
|
|
static VALUE
|
|
jfk_reader_initialize(VALUE self, VALUE audio_path)
|
|
{
|
|
rb_iv_set(self, "audio_path", audio_path);
|
|
return Qnil;
|
|
}
|
|
|
|
static bool
|
|
jfk_reader_get_memory_view(const VALUE obj, rb_memory_view_t *view, int flags)
|
|
{
|
|
VALUE audio_path = rb_iv_get(obj, "audio_path");
|
|
const char *audio_path_str = StringValueCStr(audio_path);
|
|
const int n_samples = 176000;
|
|
float *data = (float *)malloc(n_samples * sizeof(float));
|
|
short *samples = (short *)malloc(n_samples * sizeof(short));
|
|
FILE *file = fopen(audio_path_str, "rb");
|
|
|
|
fseek(file, 78, SEEK_SET);
|
|
fread(samples, sizeof(short), n_samples, file);
|
|
fclose(file);
|
|
for (int i = 0; i < n_samples; i++) {
|
|
data[i] = samples[i]/32768.0;
|
|
}
|
|
|
|
view->obj = obj;
|
|
view->data = (void *)data;
|
|
view->byte_size = sizeof(float) * n_samples;
|
|
view->readonly = true;
|
|
view->format = "f";
|
|
view->item_size = sizeof(float);
|
|
view->item_desc.components = NULL;
|
|
view->item_desc.length = 0;
|
|
view->ndim = 1;
|
|
view->shape = NULL;
|
|
view->sub_offsets = NULL;
|
|
view->private_data = NULL;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
jfk_reader_release_memory_view(const VALUE obj, rb_memory_view_t *view)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
jfk_reader_memory_view_available_p(const VALUE obj)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
static const rb_memory_view_entry_t jfk_reader_view_entry = {
|
|
jfk_reader_get_memory_view,
|
|
jfk_reader_release_memory_view,
|
|
jfk_reader_memory_view_available_p
|
|
};
|
|
|
|
static VALUE
|
|
read_jfk(int argc, VALUE *argv, VALUE obj)
|
|
{
|
|
const char *audio_path_str = StringValueCStr(argv[0]);
|
|
const int n_samples = 176000;
|
|
|
|
short samples[n_samples];
|
|
FILE *file = fopen(audio_path_str, "rb");
|
|
|
|
fseek(file, 78, SEEK_SET);
|
|
fread(samples, sizeof(short), n_samples, file);
|
|
fclose(file);
|
|
|
|
VALUE rb_samples = rb_ary_new2(n_samples);
|
|
for (int i = 0; i < n_samples; i++) {
|
|
rb_ary_push(rb_samples, INT2FIX(samples[i]));
|
|
}
|
|
|
|
VALUE rb_data = rb_ary_new2(n_samples);
|
|
for (int i = 0; i < n_samples; i++) {
|
|
rb_ary_push(rb_data, DBL2NUM(samples[i]/32768.0));
|
|
}
|
|
|
|
float data[n_samples];
|
|
for (int i = 0; i < n_samples; i++) {
|
|
data[i] = samples[i]/32768.0;
|
|
}
|
|
void *c_data = (void *)data;
|
|
VALUE rb_void = rb_enc_str_new((const char *)c_data, sizeof(data), rb_ascii8bit_encoding());
|
|
|
|
VALUE rb_result = rb_ary_new3(3, rb_samples, rb_data, rb_void);
|
|
return rb_result;
|
|
}
|
|
|
|
void Init_jfk_reader(void)
|
|
{
|
|
VALUE cJFKReader = rb_define_class("JFKReader", rb_cObject);
|
|
rb_memory_view_register(cJFKReader, &jfk_reader_view_entry);
|
|
rb_define_method(cJFKReader, "initialize", jfk_reader_initialize, 1);
|
|
|
|
|
|
rb_define_global_function("read_jfk", read_jfk, -1);
|
|
|
|
|
|
|
|
}
|