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server.cpp: add dtw #2044

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Merged
merged 2 commits into from
Apr 15, 2024
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server.cpp: add dtw #2044

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aff5a9c
server.cpp: add dtw
eschmidbauer Apr 12, 2024
02bf9f3
Update examples/server/server.cpp
ggerganov Apr 15, 2024
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48 changes: 48 additions & 0 deletions examples/server/server.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -87,6 +87,8 @@ struct whisper_params {
std::string tdrz_speaker_turn = " [SPEAKER_TURN]"; // TODO: set from command line

std::string openvino_encode_device = "CPU";

std::string dtw = "";
};

void whisper_print_usage(int /*argc*/, char ** argv, const whisper_params & params, const server_params& sparams) {
Expand Down Expand Up @@ -126,6 +128,7 @@ void whisper_print_usage(int /*argc*/, char ** argv, const whisper_params & para
fprintf(stderr, " -m FNAME, --model FNAME [%-7s] model path\n", params.model.c_str());
fprintf(stderr, " -oved D, --ov-e-device DNAME [%-7s] the OpenVINO device used for encode inference\n", params.openvino_encode_device.c_str());
// server params
fprintf(stderr, " -dtw MODEL --dtw MODEL [%-7s] compute token-level timestamps\n", params.dtw.c_str());
fprintf(stderr, " --host HOST, [%-7s] Hostname/ip-adress for the server\n", sparams.hostname.c_str());
fprintf(stderr, " --port PORT, [%-7d] Port number for the server\n", sparams.port);
fprintf(stderr, " --public PATH, [%-7s] Path to the public folder\n", sparams.public_path.c_str());
Expand Down Expand Up @@ -173,6 +176,7 @@ bool whisper_params_parse(int argc, char ** argv, whisper_params & params, serve
else if ( arg == "--prompt") { params.prompt = argv[++i]; }
else if (arg == "-m" || arg == "--model") { params.model = argv[++i]; }
else if (arg == "-oved" || arg == "--ov-e-device") { params.openvino_encode_device = argv[++i]; }
else if (arg == "-dtw" || arg == "--dtw") { params.dtw = argv[++i]; }
else if (arg == "-ng" || arg == "--no-gpu") { params.use_gpu = false; }
// server params
else if ( arg == "--port") { sparams.port = std::stoi(argv[++i]); }
Expand Down Expand Up @@ -499,6 +503,49 @@ int main(int argc, char ** argv) {
// whisper init
struct whisper_context_params cparams = whisper_context_default_params();
cparams.use_gpu = params.use_gpu;
if (!params.dtw.empty()) {
cparams.dtw_token_timestamps = true;
cparams.dtw_aheads_preset = WHISPER_AHEADS_NONE;

if (params.dtw == "tiny") {
cparams.dtw_aheads_preset = WHISPER_AHEADS_TINY;
}
if (params.dtw == "tiny.en") {
cparams.dtw_aheads_preset = WHISPER_AHEADS_TINY_EN;
}
if (params.dtw == "base") {
cparams.dtw_aheads_preset = WHISPER_AHEADS_BASE;
}
if (params.dtw == "base.en") {
cparams.dtw_aheads_preset = WHISPER_AHEADS_BASE_EN;
}
if (params.dtw == "small") {
cparams.dtw_aheads_preset = WHISPER_AHEADS_SMALL;
}
if (params.dtw == "small.en") {
cparams.dtw_aheads_preset = WHISPER_AHEADS_SMALL_EN;
}
if (params.dtw == "medium") {
cparams.dtw_aheads_preset = WHISPER_AHEADS_MEDIUM;
}
if (params.dtw == "medium.en") {
cparams.dtw_aheads_preset = WHISPER_AHEADS_MEDIUM_EN;
}
if (params.dtw == "large.v1") {
cparams.dtw_aheads_preset = WHISPER_AHEADS_LARGE_V1;
}
if (params.dtw == "large.v2") {
cparams.dtw_aheads_preset = WHISPER_AHEADS_LARGE_V2;
}
if (params.dtw == "large.v3") {
cparams.dtw_aheads_preset = WHISPER_AHEADS_LARGE_V3;
}

if (cparams.dtw_aheads_preset == WHISPER_AHEADS_NONE) {
fprintf(stderr, "error: unknown DTW preset '%s'\n", params.dtw.c_str());
return 3;
}
}

struct whisper_context * ctx = whisper_init_from_file_with_params(params.model.c_str(), cparams);

Expand Down Expand Up @@ -865,6 +912,7 @@ int main(int argc, char ** argv) {
if (!params.no_timestamps) {
word["start"] = token.t0 * 0.01;
word["end"] = token.t1 * 0.01;
word["t_dtw"] = token.t_dtw;
}
word["probability"] = token.p;
total_logprob += token.plog;
Expand Down