forked from extern/whisper.cpp
command : refactor to split command list & general transcription modes (#331)
This makes it easier to understand if you're looking for only one of the capabilities.
This commit is contained in:
Andy Maloney
GitHub
parent
424c410c42
commit
f00509d57c
@ -510,6 +510,333 @@ std::vector<std::string> read_allowed_commands(const std::string & fname) {
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return allowed_commands;
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}
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// command-list mode
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// guide the transcription to match the most likely command from a provided list
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int process_command_list(struct whisper_context * ctx, audio_async &audio, const whisper_params ¶ms) {
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fprintf(stderr, "\n");
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fprintf(stderr, "%s: guided mode\n", __func__);
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std::vector<std::string> allowed_commands = read_allowed_commands(params.commands);
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if (allowed_commands.empty()) {
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fprintf(stderr, "%s: error: failed to read allowed commands from '%s'\n", __func__, params.commands.c_str());
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return 2;
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}
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int max_len = 0;
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std::vector<std::vector<whisper_token>> allowed_tokens;
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for (const auto & cmd : allowed_commands) {
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whisper_token tokens[1024];
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allowed_tokens.emplace_back();
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for (int l = 0; l < (int) cmd.size(); ++l) {
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// NOTE: very important to add the whitespace !
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// the reason is that the first decoded token starts with a whitespace too!
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std::string ss = std::string(" ") + cmd.substr(0, l + 1);
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const int n = whisper_tokenize(ctx, ss.c_str(), tokens, 1024);
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if (n < 0) {
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fprintf(stderr, "%s: error: failed to tokenize command '%s'\n", __func__, cmd.c_str());
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return 3;
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}
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if (n == 1) {
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allowed_tokens.back().push_back(tokens[0]);
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}
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}
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max_len = std::max(max_len, (int) cmd.size());
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}
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fprintf(stderr, "%s: allowed commands [ tokens ]:\n", __func__);
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fprintf(stderr, "\n");
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for (int i = 0; i < (int) allowed_commands.size(); ++i) {
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fprintf(stderr, " - \033[1m%-*s\033[0m = [", max_len, allowed_commands[i].c_str());
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for (const auto & token : allowed_tokens[i]) {
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fprintf(stderr, " %5d", token);
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}
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fprintf(stderr, " ]\n");
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}
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std::string k_prompt = "select one from the available words: ";
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for (int i = 0; i < (int) allowed_commands.size(); ++i) {
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if (i > 0) {
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k_prompt += ", ";
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}
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k_prompt += allowed_commands[i];
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}
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k_prompt += ". selected word: ";
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// tokenize prompt
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std::vector<whisper_token> k_tokens;
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{
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k_tokens.resize(1024);
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const int n = whisper_tokenize(ctx, k_prompt.c_str(), k_tokens.data(), 1024);
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if (n < 0) {
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fprintf(stderr, "%s: error: failed to tokenize prompt '%s'\n", __func__, k_prompt.c_str());
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return 4;
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}
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k_tokens.resize(n);
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}
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fprintf(stderr, "\n");
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fprintf(stderr, "%s: prompt: '%s'\n", __func__, k_prompt.c_str());
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fprintf(stderr, "%s: tokens: [", __func__);
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for (const auto & token : k_tokens) {
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fprintf(stderr, " %d", token);
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}
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fprintf(stderr, " ]\n");
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fprintf(stderr, "\n");
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fprintf(stderr, "%s: listening for a command ...\n", __func__);
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fprintf(stderr, "\n");
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bool is_running = true;
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std::vector<float> pcmf32_cur;
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std::vector<float> pcmf32_prompt;
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// main loop
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while (is_running) {
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// handle Ctrl + C
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{
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SDL_Event event;
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while (SDL_PollEvent(&event)) {
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switch (event.type) {
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case SDL_QUIT:
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{
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is_running = false;
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} break;
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default:
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break;
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}
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}
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if (!is_running) {
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return 0;
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}
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}
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// delay
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std::this_thread::sleep_for(std::chrono::milliseconds(100));
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audio.get(2000, pcmf32_cur);
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if (vad_simple(pcmf32_cur, WHISPER_SAMPLE_RATE, 1000, params.vad_thold, params.freq_thold, params.print_energy)) {
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fprintf(stdout, "%s: Speech detected! Processing ...\n", __func__);
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const auto t_start = std::chrono::high_resolution_clock::now();
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whisper_full_params wparams = whisper_full_default_params(WHISPER_SAMPLING_GREEDY);
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wparams.print_progress = false;
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wparams.print_special = params.print_special;
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wparams.print_realtime = false;
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wparams.print_timestamps = !params.no_timestamps;
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wparams.translate = params.translate;
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wparams.no_context = true;
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wparams.single_segment = true;
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wparams.max_tokens = 1;
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wparams.language = params.language.c_str();
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wparams.n_threads = params.n_threads;
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wparams.audio_ctx = params.audio_ctx;
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wparams.speed_up = params.speed_up;
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wparams.prompt_tokens = k_tokens.data();
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wparams.prompt_n_tokens = k_tokens.size();
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// run the transformer and a single decoding pass
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if (whisper_full(ctx, wparams, pcmf32_cur.data(), pcmf32_cur.size()) != 0) {
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fprintf(stderr, "%s: ERROR: whisper_full() failed\n", __func__);
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break;
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}
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const auto * probs = whisper_get_probs(ctx);
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std::vector<std::pair<float, int>> probs_id;
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double psum = 0.0;
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for (int i = 0; i < (int) allowed_commands.size(); ++i) {
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probs_id.emplace_back(probs[allowed_tokens[i][0]], i);
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for (int j = 1; j < (int) allowed_tokens[i].size(); ++j) {
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probs_id.back().first += probs[allowed_tokens[i][j]];
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}
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probs_id.back().first /= allowed_tokens[i].size();
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psum += probs_id.back().first;
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}
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// normalize
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for (auto & p : probs_id) {
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p.first /= psum;
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}
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// sort descending
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{
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using pair_type = decltype(probs_id)::value_type;
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std::sort(probs_id.begin(), probs_id.end(), [](const pair_type & a, const pair_type & b) {
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return a.first > b.first;
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});
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}
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// print the commands and the respective probabilities
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{
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fprintf(stdout, "\n");
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for (const auto & cmd : probs_id) {
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fprintf(stdout, "%s: %s%-*s%s = %f | ", __func__, "\033[1m", max_len, allowed_commands[cmd.second].c_str(), "\033[0m", cmd.first);
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for (int token : allowed_tokens[cmd.second]) {
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fprintf(stdout, "'%4s' %f ", whisper_token_to_str(ctx, token), probs[token]);
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}
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fprintf(stdout, "\n");
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}
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}
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// best command
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{
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const auto t_end = std::chrono::high_resolution_clock::now();
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const float prob = probs_id[0].first;
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const int index = probs_id[0].second;
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fprintf(stdout, "\n");
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fprintf(stdout, "%s: detected command: %s%s%s | p = %f | t = %d ms\n", __func__,
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"\033[1m", allowed_commands[index].c_str(), "\033[0m", prob,
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(int) std::chrono::duration_cast<std::chrono::milliseconds>(t_end - t_start).count());
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fprintf(stdout, "\n");
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}
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audio.clear();
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}
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}
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return 0;
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}
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// general-purpose mode
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// freely transcribe the voice into text
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int process_general_transcription(struct whisper_context * ctx, audio_async &audio, const whisper_params ¶ms) {
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bool is_running = true;
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bool have_prompt = false;
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bool ask_prompt = true;
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float prob0 = 0.0f;
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float prob = 0.0f;
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std::vector<float> pcmf32_cur;
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std::vector<float> pcmf32_prompt;
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const std::string k_prompt = "Ok Whisper, start listening for commands.";
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fprintf(stderr, "\n");
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fprintf(stderr, "%s: general-purpose mode\n", __func__);
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// main loop
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while (is_running) {
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// handle Ctrl + C
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{
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SDL_Event event;
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while (SDL_PollEvent(&event)) {
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switch (event.type) {
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case SDL_QUIT:
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{
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is_running = false;
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} break;
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default:
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break;
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}
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}
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if (!is_running) {
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return 0;
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}
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}
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// delay
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std::this_thread::sleep_for(std::chrono::milliseconds(100));
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if (ask_prompt) {
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fprintf(stdout, "\n");
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fprintf(stdout, "%s: Say the following phrase: '%s%s%s'\n", __func__, "\033[1m", k_prompt.c_str(), "\033[0m");
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fprintf(stdout, "\n");
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ask_prompt = false;
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}
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{
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audio.get(2000, pcmf32_cur);
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if (vad_simple(pcmf32_cur, WHISPER_SAMPLE_RATE, 1000, params.vad_thold, params.freq_thold, params.print_energy)) {
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fprintf(stdout, "%s: Speech detected! Processing ...\n", __func__);
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int64_t t_ms = 0;
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if (!have_prompt) {
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// wait for activation phrase
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audio.get(params.prompt_ms, pcmf32_cur);
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const auto txt = ::trim(::transcribe(ctx, params, pcmf32_cur, prob0, t_ms));
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fprintf(stdout, "%s: Heard '%s%s%s', (t = %d ms)\n", __func__, "\033[1m", txt.c_str(), "\033[0m", (int) t_ms);
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const float sim = similarity(txt, k_prompt);
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if (txt.length() < 0.8*k_prompt.length() || txt.length() > 1.2*k_prompt.length() || sim < 0.8f) {
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fprintf(stdout, "%s: WARNING: prompt not recognized, try again\n", __func__);
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ask_prompt = true;
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} else {
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fprintf(stdout, "\n");
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fprintf(stdout, "%s: The prompt has been recognized!\n", __func__);
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fprintf(stdout, "%s: Waiting for voice commands ...\n", __func__);
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fprintf(stdout, "\n");
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// save the audio for the prompt
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pcmf32_prompt = pcmf32_cur;
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have_prompt = true;
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}
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} else {
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// we have heard the activation phrase, now detect the commands
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audio.get(params.command_ms, pcmf32_cur);
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// prepend the prompt audio
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pcmf32_cur.insert(pcmf32_cur.begin(), pcmf32_prompt.begin(), pcmf32_prompt.end());
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const auto txt = ::trim(::transcribe(ctx, params, pcmf32_cur, prob, t_ms));
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prob = 100.0f*(prob - prob0);
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//fprintf(stdout, "%s: heard '%s'\n", __func__, txt.c_str());
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// find the prompt in the text
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float best_sim = 0.0f;
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size_t best_len = 0;
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for (int n = 0.8*k_prompt.size(); n <= 1.2*k_prompt.size(); ++n) {
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const auto prompt = txt.substr(0, n);
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const float sim = similarity(prompt, k_prompt);
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//fprintf(stderr, "%s: prompt = '%s', sim = %f\n", __func__, prompt.c_str(), sim);
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if (sim > best_sim) {
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best_sim = sim;
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best_len = n;
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}
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}
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const std::string command = ::trim(txt.substr(best_len));
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fprintf(stdout, "%s: Command '%s%s%s', (t = %d ms)\n", __func__, "\033[1m", command.c_str(), "\033[0m", (int) t_ms);
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fprintf(stdout, "\n");
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}
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audio.clear();
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}
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}
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}
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return 0;
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}
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int main(int argc, char ** argv) {
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whisper_params params;
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@ -561,300 +888,12 @@ int main(int argc, char ** argv) {
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std::this_thread::sleep_for(std::chrono::milliseconds(1000));
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audio.clear();
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int max_len = 0;
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bool is_running = true;
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bool have_prompt = false;
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bool ask_prompt = true;
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float prob0 = 0.0f;
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float prob = 0.0f;
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std::vector<float> pcmf32_cur;
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std::vector<float> pcmf32_prompt;
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std::vector<std::string> allowed_commands;
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std::vector<std::vector<whisper_token>> allowed_tokens;
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std::string k_prompt;
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std::vector<whisper_token> k_tokens;
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int ret_val = 0;
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if (!params.commands.empty()) {
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fprintf(stderr, "\n");
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fprintf(stderr, "%s: guided mode\n", __func__);
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allowed_commands = read_allowed_commands(params.commands);
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if (allowed_commands.empty()) {
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fprintf(stderr, "%s: error: failed to read allowed commands from '%s'\n", __func__, params.commands.c_str());
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return 2;
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}
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for (const auto & cmd : allowed_commands) {
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whisper_token tokens[1024];
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allowed_tokens.emplace_back();
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for (int l = 0; l < (int) cmd.size(); ++l) {
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// NOTE: very important to add the whitespace !
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// the reason is that the first decoded token starts with a whitespace too!
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std::string ss = std::string(" ") + cmd.substr(0, l + 1);
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const int n = whisper_tokenize(ctx, ss.c_str(), tokens, 1024);
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if (n < 0) {
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fprintf(stderr, "%s: error: failed to tokenize command '%s'\n", __func__, cmd.c_str());
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return 3;
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}
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if (n == 1) {
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allowed_tokens.back().push_back(tokens[0]);
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}
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}
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max_len = std::max(max_len, (int) cmd.size());
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}
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fprintf(stderr, "%s: allowed commands [ tokens ]:\n", __func__);
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fprintf(stderr, "\n");
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for (int i = 0; i < (int) allowed_commands.size(); ++i) {
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fprintf(stderr, " - \033[1m%-*s\033[0m = [", max_len, allowed_commands[i].c_str());
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for (const auto & token : allowed_tokens[i]) {
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fprintf(stderr, " %5d", token);
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}
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fprintf(stderr, " ]\n");
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}
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k_prompt = "select one from the available words: ";
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for (int i = 0; i < (int) allowed_commands.size(); ++i) {
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if (i > 0) {
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k_prompt += ", ";
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}
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k_prompt += allowed_commands[i];
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}
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k_prompt += ". selected word: ";
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// tokenize prompt
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{
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k_tokens.resize(1024);
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const int n = whisper_tokenize(ctx, k_prompt.c_str(), k_tokens.data(), 1024);
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if (n < 0) {
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fprintf(stderr, "%s: error: failed to tokenize prompt '%s'\n", __func__, k_prompt.c_str());
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return 4;
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}
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k_tokens.resize(n);
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}
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fprintf(stderr, "\n");
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fprintf(stderr, "%s: prompt: '%s'\n", __func__, k_prompt.c_str());
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fprintf(stderr, "%s: tokens: [", __func__);
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for (const auto & token : k_tokens) {
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fprintf(stderr, " %d", token);
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}
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fprintf(stderr, " ]\n");
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fprintf(stderr, "\n");
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fprintf(stderr, "%s: listening for a command ...\n", __func__);
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fprintf(stderr, "\n");
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ret_val = process_command_list(ctx, audio, params);
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} else {
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fprintf(stderr, "\n");
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fprintf(stderr, "%s: general-purpose mode\n", __func__);
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k_prompt = "Ok Whisper, start listening for commands.";
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}
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// main loop
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while (is_running) {
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// handle Ctrl + C
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{
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SDL_Event event;
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while (SDL_PollEvent(&event)) {
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switch (event.type) {
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case SDL_QUIT:
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{
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is_running = false;
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} break;
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default:
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break;
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}
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}
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if (!is_running) {
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break;
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}
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}
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// delay
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std::this_thread::sleep_for(std::chrono::milliseconds(100));
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if (allowed_commands.empty()) {
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// general-purpose mode
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// freely transcribe the voice into text
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if (ask_prompt) {
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fprintf(stdout, "\n");
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fprintf(stdout, "%s: Say the following phrase: '%s%s%s'\n", __func__, "\033[1m", k_prompt.c_str(), "\033[0m");
|
||||
fprintf(stdout, "\n");
|
||||
|
||||
ask_prompt = false;
|
||||
}
|
||||
|
||||
{
|
||||
int64_t t_ms = 0;
|
||||
|
||||
audio.get(2000, pcmf32_cur);
|
||||
|
||||
if (vad_simple(pcmf32_cur, WHISPER_SAMPLE_RATE, 1000, params.vad_thold, params.freq_thold, params.print_energy)) {
|
||||
fprintf(stdout, "%s: Speech detected! Processing ...\n", __func__);
|
||||
|
||||
if (!have_prompt) {
|
||||
// wait for activation phrase
|
||||
audio.get(params.prompt_ms, pcmf32_cur);
|
||||
|
||||
const auto txt = ::trim(::transcribe(ctx, params, pcmf32_cur, prob0, t_ms));
|
||||
|
||||
fprintf(stdout, "%s: Heard '%s%s%s', (t = %d ms)\n", __func__, "\033[1m", txt.c_str(), "\033[0m", (int) t_ms);
|
||||
|
||||
const float sim = similarity(txt, k_prompt);
|
||||
|
||||
if (txt.length() < 0.8*k_prompt.length() || txt.length() > 1.2*k_prompt.length() || sim < 0.8f) {
|
||||
fprintf(stdout, "%s: WARNING: prompt not recognized, try again\n", __func__);
|
||||
ask_prompt = true;
|
||||
} else {
|
||||
fprintf(stdout, "\n");
|
||||
fprintf(stdout, "%s: The prompt has been recognized!\n", __func__);
|
||||
fprintf(stdout, "%s: Waiting for voice commands ...\n", __func__);
|
||||
fprintf(stdout, "\n");
|
||||
|
||||
// save the audio for the prompt
|
||||
pcmf32_prompt = pcmf32_cur;
|
||||
have_prompt = true;
|
||||
}
|
||||
} else {
|
||||
// we have heard the activation phrase, now detect the commands
|
||||
audio.get(params.command_ms, pcmf32_cur);
|
||||
|
||||
// prepend the prompt audio
|
||||
pcmf32_cur.insert(pcmf32_cur.begin(), pcmf32_prompt.begin(), pcmf32_prompt.end());
|
||||
|
||||
const auto txt = ::trim(::transcribe(ctx, params, pcmf32_cur, prob, t_ms));
|
||||
|
||||
prob = 100.0f*(prob - prob0);
|
||||
|
||||
//fprintf(stdout, "%s: heard '%s'\n", __func__, txt.c_str());
|
||||
|
||||
// find the prompt in the text
|
||||
float best_sim = 0.0f;
|
||||
size_t best_len = 0;
|
||||
for (int n = 0.8*k_prompt.size(); n <= 1.2*k_prompt.size(); ++n) {
|
||||
const auto prompt = txt.substr(0, n);
|
||||
|
||||
const float sim = similarity(prompt, k_prompt);
|
||||
|
||||
//fprintf(stderr, "%s: prompt = '%s', sim = %f\n", __func__, prompt.c_str(), sim);
|
||||
|
||||
if (sim > best_sim) {
|
||||
best_sim = sim;
|
||||
best_len = n;
|
||||
}
|
||||
}
|
||||
|
||||
const std::string command = ::trim(txt.substr(best_len));
|
||||
|
||||
fprintf(stdout, "%s: Command '%s%s%s', (t = %d ms)\n", __func__, "\033[1m", command.c_str(), "\033[0m", (int) t_ms);
|
||||
fprintf(stdout, "\n");
|
||||
}
|
||||
|
||||
audio.clear();
|
||||
}
|
||||
}
|
||||
} else {
|
||||
// command-list mode
|
||||
// guide the transcription to match the most likely command from a provided list
|
||||
|
||||
audio.get(2000, pcmf32_cur);
|
||||
|
||||
if (vad_simple(pcmf32_cur, WHISPER_SAMPLE_RATE, 1000, params.vad_thold, params.freq_thold, params.print_energy)) {
|
||||
fprintf(stdout, "%s: Speech detected! Processing ...\n", __func__);
|
||||
|
||||
const auto t_start = std::chrono::high_resolution_clock::now();
|
||||
|
||||
whisper_full_params wparams = whisper_full_default_params(WHISPER_SAMPLING_GREEDY);
|
||||
|
||||
wparams.print_progress = false;
|
||||
wparams.print_special = params.print_special;
|
||||
wparams.print_realtime = false;
|
||||
wparams.print_timestamps = !params.no_timestamps;
|
||||
wparams.translate = params.translate;
|
||||
wparams.no_context = true;
|
||||
wparams.single_segment = true;
|
||||
wparams.max_tokens = 1;
|
||||
wparams.language = params.language.c_str();
|
||||
wparams.n_threads = params.n_threads;
|
||||
|
||||
wparams.audio_ctx = params.audio_ctx;
|
||||
wparams.speed_up = params.speed_up;
|
||||
|
||||
wparams.prompt_tokens = k_tokens.data();
|
||||
wparams.prompt_n_tokens = k_tokens.size();
|
||||
|
||||
// run the transformer and a single decoding pass
|
||||
if (whisper_full(ctx, wparams, pcmf32_cur.data(), pcmf32_cur.size()) != 0) {
|
||||
fprintf(stderr, "%s: ERROR: whisper_full() failed\n", __func__);
|
||||
break;
|
||||
}
|
||||
|
||||
const auto * probs = whisper_get_probs(ctx);
|
||||
std::vector<std::pair<float, int>> probs_id;
|
||||
|
||||
double psum = 0.0;
|
||||
for (int i = 0; i < (int) allowed_commands.size(); ++i) {
|
||||
probs_id.emplace_back(probs[allowed_tokens[i][0]], i);
|
||||
for (int j = 1; j < (int) allowed_tokens[i].size(); ++j) {
|
||||
probs_id.back().first += probs[allowed_tokens[i][j]];
|
||||
}
|
||||
probs_id.back().first /= allowed_tokens[i].size();
|
||||
psum += probs_id.back().first;
|
||||
}
|
||||
|
||||
// normalize
|
||||
for (auto & p : probs_id) {
|
||||
p.first /= psum;
|
||||
}
|
||||
|
||||
// sort descending
|
||||
{
|
||||
using pair_type = decltype(probs_id)::value_type;
|
||||
std::sort(probs_id.begin(), probs_id.end(), [](const pair_type & a, const pair_type & b) {
|
||||
return a.first > b.first;
|
||||
});
|
||||
}
|
||||
|
||||
// print the commands and the respective probabilities
|
||||
{
|
||||
fprintf(stdout, "\n");
|
||||
for (const auto & cmd : probs_id) {
|
||||
fprintf(stdout, "%s: %s%-*s%s = %f | ", __func__, "\033[1m", max_len, allowed_commands[cmd.second].c_str(), "\033[0m", cmd.first);
|
||||
for (int i = 0; i < (int) allowed_tokens[cmd.second].size(); ++i) {
|
||||
fprintf(stdout, "'%4s' %f ", whisper_token_to_str(ctx, allowed_tokens[cmd.second][i]), probs[allowed_tokens[cmd.second][i]]);
|
||||
}
|
||||
fprintf(stdout, "\n");
|
||||
}
|
||||
}
|
||||
|
||||
// best command
|
||||
{
|
||||
const auto t_end = std::chrono::high_resolution_clock::now();
|
||||
|
||||
fprintf(stdout, "\n");
|
||||
fprintf(stdout, "%s: detected command: %s%s%s | p = %f | t = %d ms\n", __func__,
|
||||
"\033[1m", allowed_commands[probs_id[0].second].c_str(), "\033[0m", probs_id[0].first,
|
||||
(int) std::chrono::duration_cast<std::chrono::milliseconds>(t_end - t_start).count());
|
||||
fprintf(stdout, "\n");
|
||||
}
|
||||
|
||||
audio.clear();
|
||||
}
|
||||
}
|
||||
ret_val = process_general_transcription(ctx, audio, params);
|
||||
}
|
||||
|
||||
audio.pause();
|
||||
@ -862,5 +901,5 @@ int main(int argc, char ** argv) {
|
||||
whisper_print_timings(ctx);
|
||||
whisper_free(ctx);
|
||||
|
||||
return 0;
|
||||
return ret_val;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user