427 lines
15 KiB
C++
427 lines
15 KiB
C++
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#include <ruby.h>
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#include "ruby_whisper.h"
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#define DR_WAV_IMPLEMENTATION
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#include "dr_wav.h"
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#include <cmath>
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#include <fstream>
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#include <cstdio>
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#include <string>
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#include <thread>
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#include <vector>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define BOOL_PARAMS_SETTER(self, prop, value) \
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ruby_whisper_params *rwp; \
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Data_Get_Struct(self, ruby_whisper_params, rwp); \
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if (value == Qfalse || value == Qnil) { \
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rwp->params.prop = false; \
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} else { \
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rwp->params.prop = true; \
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} \
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return value; \
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#define BOOL_PARAMS_GETTER(self, prop) \
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ruby_whisper_params *rwp; \
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Data_Get_Struct(self, ruby_whisper_params, rwp); \
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if (rwp->params.prop) { \
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return Qtrue; \
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} else { \
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return Qfalse; \
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}
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VALUE mWhisper;
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VALUE cContext;
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VALUE cParams;
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static void ruby_whisper_free(ruby_whisper *rw) {
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if (rw->context) {
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whisper_free(rw->context);
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rw->context = NULL;
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}
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}
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static void ruby_whisper_params_free(ruby_whisper_params *rwp) {
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}
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void rb_whisper_mark(ruby_whisper *rw) {
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// call rb_gc_mark on any ruby references in rw
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}
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void rb_whisper_free(ruby_whisper *rw) {
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ruby_whisper_free(rw);
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free(rw);
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}
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void rb_whisper_params_mark(ruby_whisper_params *rwp) {
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}
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void rb_whisper_params_free(ruby_whisper_params *rwp) {
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ruby_whisper_params_free(rwp);
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free(rwp);
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}
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static VALUE ruby_whisper_allocate(VALUE klass) {
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ruby_whisper *rw;
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rw = ALLOC(ruby_whisper);
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rw->context = NULL;
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return Data_Wrap_Struct(klass, rb_whisper_mark, rb_whisper_free, rw);
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}
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static VALUE ruby_whisper_params_allocate(VALUE klass) {
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ruby_whisper_params *rwp;
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rwp = ALLOC(ruby_whisper_params);
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rwp->params = whisper_full_default_params(WHISPER_SAMPLING_GREEDY);
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return Data_Wrap_Struct(klass, rb_whisper_params_mark, rb_whisper_params_free, rwp);
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}
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static VALUE ruby_whisper_initialize(int argc, VALUE *argv, VALUE self) {
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ruby_whisper *rw;
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VALUE whisper_model_file_path;
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// TODO: we can support init from buffer here too maybe another ruby object to expose
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rb_scan_args(argc, argv, "01", &whisper_model_file_path);
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Data_Get_Struct(self, ruby_whisper, rw);
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if (!rb_respond_to(whisper_model_file_path, rb_intern("to_s"))) {
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rb_raise(rb_eRuntimeError, "Expected file path to model to initialize Whisper::Context");
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}
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rw->context = whisper_init_from_file(StringValueCStr(whisper_model_file_path));
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if (rw->context == nullptr) {
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rb_raise(rb_eRuntimeError, "error: failed to initialize whisper context");
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}
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return self;
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}
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/*
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* transcribe a single file
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* can emit to a block results
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*
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**/
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static VALUE ruby_whisper_transcribe(int argc, VALUE *argv, VALUE self) {
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ruby_whisper *rw;
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ruby_whisper_params *rwp;
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VALUE wave_file_path, blk, params;
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rb_scan_args(argc, argv, "02&", &wave_file_path, ¶ms, &blk);
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Data_Get_Struct(self, ruby_whisper, rw);
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Data_Get_Struct(params, ruby_whisper_params, rwp);
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if (!rb_respond_to(wave_file_path, rb_intern("to_s"))) {
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rb_raise(rb_eRuntimeError, "Expected file path to wave file");
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}
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std::string fname_inp = StringValueCStr(wave_file_path);
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std::vector<float> pcmf32; // mono-channel F32 PCM
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std::vector<std::vector<float>> pcmf32s; // stereo-channel F32 PCM
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// WAV input - this is directly from main.cpp example
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{
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drwav wav;
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std::vector<uint8_t> wav_data; // used for pipe input from stdin
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if (fname_inp == "-") {
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{
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uint8_t buf[1024];
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while (true) {
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const size_t n = fread(buf, 1, sizeof(buf), stdin);
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if (n == 0) {
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break;
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}
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wav_data.insert(wav_data.end(), buf, buf + n);
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}
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}
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if (drwav_init_memory(&wav, wav_data.data(), wav_data.size(), nullptr) == false) {
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fprintf(stderr, "error: failed to open WAV file from stdin\n");
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return self;
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}
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fprintf(stderr, "%s: read %zu bytes from stdin\n", __func__, wav_data.size());
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} else if (drwav_init_file(&wav, fname_inp.c_str(), nullptr) == false) {
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fprintf(stderr, "error: failed to open '%s' as WAV file\n", fname_inp.c_str());
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return self;
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}
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if (wav.channels != 1 && wav.channels != 2) {
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fprintf(stderr, "WAV file '%s' must be mono or stereo\n", fname_inp.c_str());
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return self;
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}
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if (rwp->diarize && wav.channels != 2 && rwp->params.print_timestamps == false) {
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fprintf(stderr, "WAV file '%s' must be stereo for diarization and timestamps have to be enabled\n", fname_inp.c_str());
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return self;
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}
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if (wav.sampleRate != WHISPER_SAMPLE_RATE) {
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fprintf(stderr, "WAV file '%s' must be %i kHz\n", fname_inp.c_str(), WHISPER_SAMPLE_RATE/1000);
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return self;
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}
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if (wav.bitsPerSample != 16) {
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fprintf(stderr, "WAV file '%s' must be 16-bit\n", fname_inp.c_str());
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return self;
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}
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const uint64_t n = wav_data.empty() ? wav.totalPCMFrameCount : wav_data.size()/(wav.channels*wav.bitsPerSample/8);
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std::vector<int16_t> pcm16;
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pcm16.resize(n*wav.channels);
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drwav_read_pcm_frames_s16(&wav, n, pcm16.data());
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drwav_uninit(&wav);
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// convert to mono, float
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pcmf32.resize(n);
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if (wav.channels == 1) {
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for (uint64_t i = 0; i < n; i++) {
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pcmf32[i] = float(pcm16[i])/32768.0f;
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}
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} else {
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for (uint64_t i = 0; i < n; i++) {
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pcmf32[i] = float(pcm16[2*i] + pcm16[2*i + 1])/65536.0f;
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}
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}
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if (rwp->diarize) {
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// convert to stereo, float
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pcmf32s.resize(2);
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pcmf32s[0].resize(n);
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pcmf32s[1].resize(n);
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for (uint64_t i = 0; i < n; i++) {
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pcmf32s[0][i] = float(pcm16[2*i])/32768.0f;
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pcmf32s[1][i] = float(pcm16[2*i + 1])/32768.0f;
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}
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}
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}
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{
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static bool is_aborted = false; // NOTE: this should be atomic to avoid data race
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rwp->params.encoder_begin_callback = [](struct whisper_context * /*ctx*/, void * user_data) {
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bool is_aborted = *(bool*)user_data;
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return !is_aborted;
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};
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rwp->params.encoder_begin_callback_user_data = &is_aborted;
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}
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if (whisper_full_parallel(rw->context, rwp->params, pcmf32.data(), pcmf32.size(), 1) != 0) {
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fprintf(stderr, "failed to process audio\n");
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return self;
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}
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const int n_segments = whisper_full_n_segments(rw->context);
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VALUE output = rb_str_new2("");
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for (int i = 0; i < n_segments; ++i) {
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const char * text = whisper_full_get_segment_text(rw->context, i);
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output = rb_str_concat(output, rb_str_new2(text));
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}
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VALUE idCall = rb_intern("call");
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if (blk != Qnil) {
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rb_funcall(blk, idCall, 1, output);
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}
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return self;
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}
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/*
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* params.language = "auto" | "en", etc...
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*/
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static VALUE ruby_whisper_params_set_language(VALUE self, VALUE value) {
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ruby_whisper_params *rwp;
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Data_Get_Struct(self, ruby_whisper_params, rwp);
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if (value == Qfalse || value == Qnil) {
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rwp->params.language = "auto";
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} else {
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rwp->params.language = StringValueCStr(value);
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}
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return value;
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}
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static VALUE ruby_whisper_params_get_language(VALUE self) {
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ruby_whisper_params *rwp;
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Data_Get_Struct(self, ruby_whisper_params, rwp);
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if (rwp->params.language) {
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return rb_str_new2(rwp->params.language);
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} else {
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return rb_str_new2("auto");
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}
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}
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static VALUE ruby_whisper_params_set_translate(VALUE self, VALUE value) {
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BOOL_PARAMS_SETTER(self, translate, value)
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}
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static VALUE ruby_whisper_params_get_translate(VALUE self) {
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BOOL_PARAMS_GETTER(self, translate)
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}
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static VALUE ruby_whisper_params_set_no_context(VALUE self, VALUE value) {
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BOOL_PARAMS_SETTER(self, no_context, value)
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}
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static VALUE ruby_whisper_params_get_no_context(VALUE self) {
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BOOL_PARAMS_GETTER(self, no_context)
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}
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static VALUE ruby_whisper_params_set_single_segment(VALUE self, VALUE value) {
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BOOL_PARAMS_SETTER(self, single_segment, value)
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}
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static VALUE ruby_whisper_params_get_single_segment(VALUE self) {
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BOOL_PARAMS_GETTER(self, single_segment)
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}
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static VALUE ruby_whisper_params_set_print_special(VALUE self, VALUE value) {
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BOOL_PARAMS_SETTER(self, print_special, value)
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}
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static VALUE ruby_whisper_params_get_print_special(VALUE self) {
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BOOL_PARAMS_GETTER(self, print_special)
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}
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static VALUE ruby_whisper_params_set_print_progress(VALUE self, VALUE value) {
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BOOL_PARAMS_SETTER(self, print_progress, value)
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}
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static VALUE ruby_whisper_params_get_print_progress(VALUE self) {
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BOOL_PARAMS_GETTER(self, print_progress)
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}
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static VALUE ruby_whisper_params_set_print_realtime(VALUE self, VALUE value) {
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BOOL_PARAMS_SETTER(self, print_realtime, value)
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}
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static VALUE ruby_whisper_params_get_print_realtime(VALUE self) {
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BOOL_PARAMS_GETTER(self, print_realtime)
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}
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static VALUE ruby_whisper_params_set_print_timestamps(VALUE self, VALUE value) {
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BOOL_PARAMS_SETTER(self, print_timestamps, value)
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}
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static VALUE ruby_whisper_params_get_print_timestamps(VALUE self) {
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BOOL_PARAMS_GETTER(self, print_timestamps)
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}
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static VALUE ruby_whisper_params_set_suppress_blank(VALUE self, VALUE value) {
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BOOL_PARAMS_SETTER(self, suppress_blank, value)
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}
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static VALUE ruby_whisper_params_get_suppress_blank(VALUE self) {
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BOOL_PARAMS_GETTER(self, suppress_blank)
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}
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static VALUE ruby_whisper_params_set_suppress_non_speech_tokens(VALUE self, VALUE value) {
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BOOL_PARAMS_SETTER(self, suppress_non_speech_tokens, value)
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}
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static VALUE ruby_whisper_params_get_suppress_non_speech_tokens(VALUE self) {
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BOOL_PARAMS_GETTER(self, suppress_non_speech_tokens)
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}
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static VALUE ruby_whisper_params_get_token_timestamps(VALUE self) {
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BOOL_PARAMS_GETTER(self, token_timestamps)
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}
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static VALUE ruby_whisper_params_set_token_timestamps(VALUE self, VALUE value) {
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BOOL_PARAMS_SETTER(self, token_timestamps, value)
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}
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static VALUE ruby_whisper_params_get_split_on_word(VALUE self) {
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BOOL_PARAMS_GETTER(self, split_on_word)
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}
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static VALUE ruby_whisper_params_set_split_on_word(VALUE self, VALUE value) {
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BOOL_PARAMS_SETTER(self, split_on_word, value)
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}
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static VALUE ruby_whisper_params_get_speed_up(VALUE self) {
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BOOL_PARAMS_GETTER(self, speed_up)
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}
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static VALUE ruby_whisper_params_set_speed_up(VALUE self, VALUE value) {
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BOOL_PARAMS_SETTER(self, speed_up, value)
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}
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static VALUE ruby_whisper_params_get_diarize(VALUE self) {
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ruby_whisper_params *rwp;
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Data_Get_Struct(self, ruby_whisper_params, rwp);
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if (rwp->diarize) {
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return Qtrue;
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} else {
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return Qfalse;
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}
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}
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static VALUE ruby_whisper_params_set_diarize(VALUE self, VALUE value) {
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ruby_whisper_params *rwp;
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Data_Get_Struct(self, ruby_whisper_params, rwp);
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if (value == Qfalse || value == Qnil) {
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rwp->diarize = false;
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} else {
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rwp->diarize = true;
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} \
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return value;
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}
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static VALUE ruby_whisper_params_get_offset(VALUE self) {
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ruby_whisper_params *rwp;
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Data_Get_Struct(self, ruby_whisper_params, rwp);
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return INT2NUM(rwp->params.offset_ms);
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}
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static VALUE ruby_whisper_params_set_offset(VALUE self, VALUE value) {
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ruby_whisper_params *rwp;
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Data_Get_Struct(self, ruby_whisper_params, rwp);
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rwp->params.offset_ms = NUM2INT(value);
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return value;
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}
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static VALUE ruby_whisper_params_get_duration(VALUE self) {
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ruby_whisper_params *rwp;
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Data_Get_Struct(self, ruby_whisper_params, rwp);
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return INT2NUM(rwp->params.duration_ms);
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}
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static VALUE ruby_whisper_params_set_duration(VALUE self, VALUE value) {
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ruby_whisper_params *rwp;
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Data_Get_Struct(self, ruby_whisper_params, rwp);
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rwp->params.duration_ms = NUM2INT(value);
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return value;
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}
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static VALUE ruby_whisper_params_get_max_text_tokens(VALUE self) {
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ruby_whisper_params *rwp;
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Data_Get_Struct(self, ruby_whisper_params, rwp);
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return INT2NUM(rwp->params.n_max_text_ctx);
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}
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static VALUE ruby_whisper_params_set_max_text_tokens(VALUE self, VALUE value) {
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ruby_whisper_params *rwp;
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Data_Get_Struct(self, ruby_whisper_params, rwp);
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rwp->params.n_max_text_ctx = NUM2INT(value);
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return value;
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}
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void Init_whisper() {
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mWhisper = rb_define_module("Whisper");
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cContext = rb_define_class_under(mWhisper, "Context", rb_cObject);
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cParams = rb_define_class_under(mWhisper, "Params", rb_cObject);
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rb_define_alloc_func(cContext, ruby_whisper_allocate);
|
||
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rb_define_method(cContext, "initialize", ruby_whisper_initialize, -1);
|
||
|
|
||
|
rb_define_method(cContext, "transcribe", ruby_whisper_transcribe, -1);
|
||
|
|
||
|
rb_define_alloc_func(cParams, ruby_whisper_params_allocate);
|
||
|
|
||
|
rb_define_method(cParams, "language=", ruby_whisper_params_set_language, 1);
|
||
|
rb_define_method(cParams, "language", ruby_whisper_params_get_language, 0);
|
||
|
rb_define_method(cParams, "translate=", ruby_whisper_params_set_translate, 1);
|
||
|
rb_define_method(cParams, "translate", ruby_whisper_params_get_translate, 0);
|
||
|
rb_define_method(cParams, "no_context=", ruby_whisper_params_set_no_context, 1);
|
||
|
rb_define_method(cParams, "no_context", ruby_whisper_params_get_no_context, 0);
|
||
|
rb_define_method(cParams, "single_segment=", ruby_whisper_params_set_single_segment, 1);
|
||
|
rb_define_method(cParams, "single_segment", ruby_whisper_params_get_single_segment, 0);
|
||
|
rb_define_method(cParams, "print_special", ruby_whisper_params_get_print_special, 0);
|
||
|
rb_define_method(cParams, "print_special=", ruby_whisper_params_set_print_special, 1);
|
||
|
rb_define_method(cParams, "print_progress", ruby_whisper_params_get_print_progress, 0);
|
||
|
rb_define_method(cParams, "print_progress=", ruby_whisper_params_set_print_progress, 1);
|
||
|
rb_define_method(cParams, "print_realtime", ruby_whisper_params_get_print_realtime, 0);
|
||
|
rb_define_method(cParams, "print_realtime=", ruby_whisper_params_set_print_realtime, 1);
|
||
|
rb_define_method(cParams, "print_timestamps", ruby_whisper_params_get_print_timestamps, 0);
|
||
|
rb_define_method(cParams, "print_timestamps=", ruby_whisper_params_set_print_timestamps, 1);
|
||
|
rb_define_method(cParams, "suppress_blank", ruby_whisper_params_get_suppress_blank, 0);
|
||
|
rb_define_method(cParams, "suppress_blank=", ruby_whisper_params_set_suppress_blank, 1);
|
||
|
rb_define_method(cParams, "suppress_non_speech_tokens", ruby_whisper_params_get_suppress_non_speech_tokens, 0);
|
||
|
rb_define_method(cParams, "suppress_non_speech_tokens=", ruby_whisper_params_set_suppress_non_speech_tokens, 1);
|
||
|
rb_define_method(cParams, "token_timestamps", ruby_whisper_params_get_token_timestamps, 0);
|
||
|
rb_define_method(cParams, "token_timestamps=", ruby_whisper_params_set_token_timestamps, 1);
|
||
|
rb_define_method(cParams, "split_on_word", ruby_whisper_params_get_split_on_word, 0);
|
||
|
rb_define_method(cParams, "split_on_word=", ruby_whisper_params_set_split_on_word, 1);
|
||
|
rb_define_method(cParams, "speed_up", ruby_whisper_params_get_speed_up, 0);
|
||
|
rb_define_method(cParams, "speed_up=", ruby_whisper_params_set_speed_up, 1);
|
||
|
rb_define_method(cParams, "diarize", ruby_whisper_params_get_diarize, 0);
|
||
|
rb_define_method(cParams, "diarize=", ruby_whisper_params_set_diarize, 1);
|
||
|
|
||
|
rb_define_method(cParams, "offset", ruby_whisper_params_get_offset, 0);
|
||
|
rb_define_method(cParams, "offset=", ruby_whisper_params_set_offset, 1);
|
||
|
rb_define_method(cParams, "duration", ruby_whisper_params_get_duration, 0);
|
||
|
rb_define_method(cParams, "duration=", ruby_whisper_params_set_duration, 1);
|
||
|
|
||
|
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);
|
||
|
}
|
||
|
#ifdef __cplusplus
|
||
|
}
|
||
|
#endif
|