#include "whisper.h" // third-party utilities // use your favorite implementations #define DR_WAV_IMPLEMENTATION #include "dr_wav.h" #include #include #include #include #include // 500 -> 00:05.000 // 6000 -> 01:00.000 std::string to_timestamp(int64_t t) { int64_t sec = t/100; int64_t msec = t - sec*100; int64_t min = sec/60; sec = sec - min*60; char buf[32]; snprintf(buf, sizeof(buf), "%02d:%02d.%03d", (int) min, (int) sec, (int) msec); return std::string(buf); } // command-line parameters struct whisper_params { int32_t seed = -1; // RNG seed, not used currently int32_t n_threads = std::min(4, (int32_t) std::thread::hardware_concurrency()); int32_t offset_ms = 0; bool verbose = false; bool translate = false; bool output_txt = false; bool output_vtt = false; bool output_srt = false; bool print_special_tokens = false; bool no_timestamps = false; std::string language = "en"; std::string model = "models/ggml-base.en.bin"; std::vector fname_inp = {}; }; void whisper_print_usage(int argc, char ** argv, const whisper_params & params); bool whisper_params_parse(int argc, char ** argv, whisper_params & params) { for (int i = 1; i < argc; i++) { std::string arg = argv[i]; if (arg[0] != '-') { params.fname_inp.push_back(arg); continue; } if (arg == "-s" || arg == "--seed") { params.seed = std::stoi(argv[++i]); } else if (arg == "-t" || arg == "--threads") { params.n_threads = std::stoi(argv[++i]); } else if (arg == "-o" || arg == "--offset") { params.offset_ms = std::stoi(argv[++i]); } else if (arg == "-v" || arg == "--verbose") { params.verbose = true; } else if (arg == "--translate") { params.translate = true; } else if (arg == "-l" || arg == "--language") { params.language = argv[++i]; if (whisper_lang_id(params.language.c_str()) == -1) { fprintf(stderr, "error: unknown language '%s'\n", params.language.c_str()); whisper_print_usage(argc, argv, params); exit(0); } } else if (arg == "-otxt" || arg == "--output-txt") { params.output_txt = true; } else if (arg == "-ovtt" || arg == "--output-vtt") { params.output_vtt = true; } else if (arg == "-osrt" || arg == "--output-srt") { params.output_srt = true; } else if (arg == "-ps" || arg == "--print_special") { params.print_special_tokens = true; } else if (arg == "-nt" || arg == "--no_timestamps") { params.no_timestamps = true; } else if (arg == "-m" || arg == "--model") { params.model = argv[++i]; } else if (arg == "-f" || arg == "--file") { params.fname_inp.push_back(argv[++i]); } else if (arg == "-h" || arg == "--help") { whisper_print_usage(argc, argv, params); exit(0); } else { fprintf(stderr, "error: unknown argument: %s\n", arg.c_str()); whisper_print_usage(argc, argv, params); exit(0); } } return true; } void whisper_print_usage(int argc, char ** argv, const whisper_params & params) { fprintf(stderr, "\n"); fprintf(stderr, "usage: %s [options] file0.wav file1.wav ...\n", argv[0]); fprintf(stderr, "\n"); fprintf(stderr, "options:\n"); fprintf(stderr, " -h, --help show this help message and exit\n"); fprintf(stderr, " -s SEED, --seed SEED RNG seed (default: -1)\n"); fprintf(stderr, " -t N, --threads N number of threads to use during computation (default: %d)\n", params.n_threads); fprintf(stderr, " -o N, --offset N offset in milliseconds (default: %d)\n", params.offset_ms); fprintf(stderr, " -v, --verbose verbose output\n"); fprintf(stderr, " --translate translate from source language to english\n"); fprintf(stderr, " -otxt, --output-txt output result in a text file\n"); fprintf(stderr, " -ovtt, --output-vtt output result in a vtt file\n"); fprintf(stderr, " -ps, --print_special print special tokens\n"); fprintf(stderr, " -nt, --no_timestamps do not print timestamps\n"); fprintf(stderr, " -l LANG, --language LANG spoken language (default: %s)\n", params.language.c_str()); fprintf(stderr, " -m FNAME, --model FNAME model path (default: %s)\n", params.model.c_str()); fprintf(stderr, " -f FNAME, --file FNAME input WAV file path\n"); fprintf(stderr, "\n"); } int main(int argc, char ** argv) { whisper_params params; if (whisper_params_parse(argc, argv, params) == false) { return 1; } if (params.seed < 0) { params.seed = time(NULL); } if (params.fname_inp.empty()) { fprintf(stderr, "error: no input files specified\n"); whisper_print_usage(argc, argv, params); return 2; } // whisper init struct whisper_context * ctx = whisper_init(params.model.c_str()); for (int f = 0; f < (int) params.fname_inp.size(); ++f) { const auto fname_inp = params.fname_inp[f]; // WAV input std::vector pcmf32; { drwav wav; if (!drwav_init_file(&wav, fname_inp.c_str(), NULL)) { fprintf(stderr, "%s: failed to open WAV file '%s' - check your input\n", argv[0], fname_inp.c_str()); whisper_print_usage(argc, argv, {}); return 3; } if (wav.channels != 1 && wav.channels != 2) { fprintf(stderr, "%s: WAV file '%s' must be mono or stereo\n", argv[0], fname_inp.c_str()); return 4; } if (wav.sampleRate != WHISPER_SAMPLE_RATE) { fprintf(stderr, "%s: WAV file '%s' must be 16 kHz\n", argv[0], fname_inp.c_str()); return 5; } if (wav.bitsPerSample != 16) { fprintf(stderr, "%s: WAV file '%s' must be 16-bit\n", argv[0], fname_inp.c_str()); return 6; } int n = wav.totalPCMFrameCount; std::vector pcm16; pcm16.resize(n*wav.channels); drwav_read_pcm_frames_s16(&wav, n, pcm16.data()); drwav_uninit(&wav); // convert to mono, float pcmf32.resize(n); if (wav.channels == 1) { for (int i = 0; i < n; i++) { pcmf32[i] = float(pcm16[i])/32768.0f; } } else { for (int i = 0; i < n; i++) { pcmf32[i] = float(pcm16[2*i] + pcm16[2*i + 1])/65536.0f; } } } // print some info about the processing { fprintf(stderr, "\n"); if (!whisper_is_multilingual(ctx)) { if (params.language != "en" || params.translate) { params.language = "en"; params.translate = false; fprintf(stderr, "%s: WARNING: model is not multilingual, ignoring language and translation options\n", __func__); } } fprintf(stderr, "%s: processing '%s' (%d samples, %.1f sec), %d threads, lang = %s, task = %s, timestamps = %d ...\n", __func__, fname_inp.c_str(), int(pcmf32.size()), float(pcmf32.size())/WHISPER_SAMPLE_RATE, params.n_threads, params.language.c_str(), params.translate ? "translate" : "transcribe", params.no_timestamps ? 0 : 1); fprintf(stderr, "\n"); } // run the inference { whisper_full_params wparams = whisper_full_default_params(WHISPER_DECODE_GREEDY); wparams.print_realtime = true; wparams.print_progress = false; wparams.print_timestamps = !params.no_timestamps; wparams.print_special_tokens = params.print_special_tokens; wparams.translate = params.translate; wparams.language = params.language.c_str(); wparams.n_threads = params.n_threads; wparams.offset_ms = params.offset_ms; if (whisper_full(ctx, wparams, pcmf32.data(), pcmf32.size()) != 0) { fprintf(stderr, "%s: failed to process audio\n", argv[0]); return 7; } // print result if (!wparams.print_realtime) { fprintf(stderr, "\n"); const int n_segments = whisper_full_n_segments(ctx); for (int i = 0; i < n_segments; ++i) { const char * text = whisper_full_get_segment_text(ctx, i); if (params.no_timestamps) { fprintf(stderr, "%s", text); fflush(stdout); } else { const int64_t t0 = whisper_full_get_segment_t0(ctx, i); const int64_t t1 = whisper_full_get_segment_t1(ctx, i); fprintf(stderr, "[%s --> %s] %s\n", to_timestamp(t0).c_str(), to_timestamp(t1).c_str(), text); } } } fprintf(stderr, "\n"); // output to text file if (params.output_txt) { const auto fname_txt = fname_inp + ".txt"; std::ofstream fout_txt(fname_txt); if (!fout_txt.is_open()) { fprintf(stderr, "%s: failed to open '%s' for writing\n", __func__, fname_txt.c_str()); return 8; } fprintf(stderr, "%s: saving output to '%s.txt'\n", __func__, fname_inp.c_str()); const int n_segments = whisper_full_n_segments(ctx); for (int i = 0; i < n_segments; ++i) { const char * text = whisper_full_get_segment_text(ctx, i); fout_txt << text; } } // output to VTT file if (params.output_vtt) { const auto fname_vtt = fname_inp + ".vtt"; std::ofstream fout_vtt(fname_vtt); if (!fout_vtt.is_open()) { fprintf(stderr, "%s: failed to open '%s' for writing\n", __func__, fname_vtt.c_str()); return 9; } fprintf(stderr, "%s: saving output to '%s.vtt'\n", __func__, fname_inp.c_str()); fout_vtt << "WEBVTT\n\n"; const int n_segments = whisper_full_n_segments(ctx); for (int i = 0; i < n_segments; ++i) { const char * text = whisper_full_get_segment_text(ctx, i); const int64_t t0 = whisper_full_get_segment_t0(ctx, i); const int64_t t1 = whisper_full_get_segment_t1(ctx, i); fout_vtt << to_timestamp(t0) << " --> " << to_timestamp(t1) << "\n"; fout_vtt << text << "\n\n"; } } // output to SRT file if (params.output_srt) { const auto fname_srt = fname_inp + ".srt"; std::ofstream fout_srt(fname_srt); if (!fout_srt.is_open()) { fprintf(stderr, "%s: failed to open '%s' for writing\n", __func__, fname_srt.c_str()); return 10; } fprintf(stderr, "%s: saving output to '%s.srt'\n", __func__, fname_inp.c_str()); const int n_segments = whisper_full_n_segments(ctx); for (int i = 0; i < n_segments; ++i) { const char * text = whisper_full_get_segment_text(ctx, i); const int64_t t0 = whisper_full_get_segment_t0(ctx, i); const int64_t t1 = whisper_full_get_segment_t1(ctx, i); fout_srt << i + 1 << "\n"; fout_srt << to_timestamp(t0) << " --> " << to_timestamp(t1) << "\n"; fout_srt << text << "\n\n"; } } } } whisper_print_timings(ctx); whisper_free(ctx); return 0; }