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whisper-command: write commands to text file #3273

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Jun 24, 2025
Merged

whisper-command: write commands to text file #3273

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34 changes: 26 additions & 8 deletions examples/command/command.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -251,7 +251,7 @@ static std::vector<std::string> get_words(const std::string &txt) {

// command-list mode
// guide the transcription to match the most likely command from a provided list
static int process_command_list(struct whisper_context * ctx, audio_async &audio, const whisper_params &params) {
static int process_command_list(struct whisper_context * ctx, audio_async &audio, const whisper_params &params, std::ofstream &fout) {
fprintf(stderr, "\n");
fprintf(stderr, "%s: guided mode\n", __func__);

Expand Down Expand Up @@ -444,12 +444,16 @@ static int process_command_list(struct whisper_context * ctx, audio_async &audio

const float prob = probs_id[0].first;
const int index = probs_id[0].second;
const char * best_command = allowed_commands[index].c_str();

fprintf(stdout, "\n");
fprintf(stdout, "%s: detected command: %s%s%s | p = %f | t = %d ms\n", __func__,
"\033[1m", allowed_commands[index].c_str(), "\033[0m", prob,
"\033[1m", best_command, "\033[0m", prob,
(int) std::chrono::duration_cast<std::chrono::milliseconds>(t_end - t_start).count());
fprintf(stdout, "\n");
if (fout.is_open()) {
fout << best_command << std::endl;
}
}
}

Expand All @@ -462,7 +466,7 @@ static int process_command_list(struct whisper_context * ctx, audio_async &audio

// always-prompt mode
// transcribe the voice into text after valid prompt
static int always_prompt_transcription(struct whisper_context * ctx, audio_async & audio, const whisper_params & params) {
static int always_prompt_transcription(struct whisper_context * ctx, audio_async & audio, const whisper_params & params, std::ofstream & fout) {
bool is_running = true;
bool ask_prompt = true;

Expand Down Expand Up @@ -528,6 +532,9 @@ static int always_prompt_transcription(struct whisper_context * ctx, audio_async

if ((sim > 0.7f) && (command.size() > 0)) {
fprintf(stdout, "%s: Command '%s%s%s', (t = %d ms)\n", __func__, "\033[1m", command.c_str(), "\033[0m", (int) t_ms);
if (fout.is_open()) {
fout << command << std::endl;
}
}

fprintf(stdout, "\n");
Expand All @@ -542,7 +549,7 @@ static int always_prompt_transcription(struct whisper_context * ctx, audio_async

// general-purpose mode
// freely transcribe the voice into text
static int process_general_transcription(struct whisper_context * ctx, audio_async & audio, const whisper_params & params) {
static int process_general_transcription(struct whisper_context * ctx, audio_async & audio, const whisper_params & params, std::ofstream & fout) {
bool is_running = true;
bool have_prompt = false;
bool ask_prompt = true;
Expand Down Expand Up @@ -662,8 +669,10 @@ static int process_general_transcription(struct whisper_context * ctx, audio_asy
} else {
// cut the prompt from the decoded text
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);
if (fout.is_open()) {
fout << command << std::endl;
}
}

fprintf(stdout, "\n");
Expand Down Expand Up @@ -759,13 +768,22 @@ int main(int argc, char ** argv) {
}
}

std::ofstream fout;
if (params.fname_out.length() > 0) {
fout.open(params.fname_out);
if (!fout.is_open()) {
fprintf(stderr, "%s: failed to open output file '%s'!\n", __func__, params.fname_out.c_str());
return 1;
}
}

if (ret_val == 0) {
if (!params.commands.empty()) {
ret_val = process_command_list(ctx, audio, params);
ret_val = process_command_list(ctx, audio, params, fout);
} else if (!params.prompt.empty() && params.grammar_parsed.rules.empty()) {
ret_val = always_prompt_transcription(ctx, audio, params);
ret_val = always_prompt_transcription(ctx, audio, params, fout);
} else {
ret_val = process_general_transcription(ctx, audio, params);
ret_val = process_general_transcription(ctx, audio, params, fout);
}
}

Expand Down
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