add vad interface GetVadResult (#3140)

* add vad interface GetVadResult

* fix comment

runtime/engine/vad/interface/vad_interface.cc

@@ -91,4 +91,13 @@ int PPSVadReset(PPSHandle_t instance) {
     }
     model->Reset();
     return 0;
-}
\ No newline at end of file
+}
+
+int PPSVadGetResult(PPSHandle_t instance, char* result, int max_len){
+    ppspeech::Vad* model = static_cast<ppspeech::Vad*>(instance);
+    if (model == nullptr) {
+        printf("instance is null\n");
+        return -1;
+    }
+    return model->GetResult(result, max_len);
+};
\ No newline at end of file

runtime/engine/vad/interface/vad_interface.h

@@ -41,6 +41,7 @@ PPSVadState_t PPSVadFeedForward(PPSHandle_t instance,
                                 float* chunk,
                                 int num_element);
 
+int PPSVadGetResult(PPSHandle_t instance, char* result, int max_len);
 #ifdef __cplusplus
 }
 #endif  // __cplusplus
\ No newline at end of file

runtime/engine/vad/interface/vad_interface_main.cc

@@ -16,56 +16,63 @@
 #include <iostream>
 #include <vector>
 
+#include <fstream>
 #include "common/base/common.h"
 #include "vad/frontend/wav.h"
 #include "vad/interface/vad_interface.h"
 
 int main(int argc, char* argv[]) {
     if (argc < 3) {
-        std::cout << "Usage: vad_interface_main path/to/config path/to/audio "
+        std::cout << "Usage: vad_interface_main path/to/config wav.scp"
                      "run_option, "
-                     "e.g ./vad_interface_main config sample.wav"
+                     "e.g ./vad_interface_main config wav.scp"
                   << std::endl;
         return -1;
     }
 
     std::string config_path = argv[1];
-    std::string audio_file = argv[2];
+    std::string wav_scp = argv[2];
 
     PPSHandle_t handle = PPSVadCreateInstance(config_path.c_str());
 
-    std::vector<float> inputWav;  // [0, 1]
-    wav::WavReader wav_reader = wav::WavReader(audio_file);
-    auto sr = wav_reader.sample_rate();
-    CHECK(sr == 16000) << " sr is " << sr << " expect 16000";
+    std::ifstream fp_wav(wav_scp);
+    std::string line = "";
+    while(getline(fp_wav, line)){
+        std::vector<float> inputWav;  // [0, 1]
+        wav::WavReader wav_reader = wav::WavReader(line);
+        auto sr = wav_reader.sample_rate();
+        CHECK(sr == 16000) << " sr is " << sr << " expect 16000";
 
-    auto num_samples = wav_reader.num_samples();
-    inputWav.resize(num_samples);
-    for (int i = 0; i < num_samples; i++) {
-        inputWav[i] = wav_reader.data()[i] / 32768;
-    }
-
-    ppspeech::Timer timer;
-    int window_size_samples = PPSVadChunkSizeSamples(handle);
-    for (int64_t j = 0; j < num_samples; j += window_size_samples) {
-        auto start = j;
-        auto end = start + window_size_samples >= num_samples
-                       ? num_samples
-                       : start + window_size_samples;
-        auto current_chunk_size = end - start;
+        auto num_samples = wav_reader.num_samples();
+        inputWav.resize(num_samples);
+        for (int i = 0; i < num_samples; i++) {
+            inputWav[i] = wav_reader.data()[i] / 32768;
+        }
 
-        std::vector<float> r{&inputWav[0] + start, &inputWav[0] + end};
-        assert(r.size() == static_cast<size_t>(current_chunk_size));
+        ppspeech::Timer timer;
+        int window_size_samples = PPSVadChunkSizeSamples(handle);
+        for (int64_t j = 0; j < num_samples; j += window_size_samples) {
+            auto start = j;
+            auto end = start + window_size_samples >= num_samples
+                        ? num_samples
+                        : start + window_size_samples;
+            std::vector<float> r(window_size_samples, 0);
+            auto current_chunk_size = end - start;
+            memcpy(r.data(), inputWav.data() + start, current_chunk_size * sizeof(float));
 
-        PPSVadState_t s = PPSVadFeedForward(handle, r.data(), r.size());
-        std::cout << s << " ";
-    }
-    std::cout << std::endl;
+            PPSVadState_t s = PPSVadFeedForward(handle, r.data(), r.size());
+        }
 
-    std::cout << "RTF=" << timer.Elapsed() / double(num_samples / sr)
-              << std::endl;
-
-    PPSVadReset(handle);
+        std::cout << "RTF=" << timer.Elapsed() / double(num_samples / sr)
+                << std::endl;
 
+        char result[10240] = {0};
+        PPSVadGetResult(handle, result, 10240);
+        std::cout << line << " " << result << std::endl;
+        
+        PPSVadReset(handle);
+        // getchar();
+    }
+    PPSVadDestroyInstance(handle);
     return 0;
 }

runtime/engine/vad/nnet/vad.cc

@@ -100,8 +100,8 @@ void Vad::Reset() {
     temp_end_ = 0;
     current_sample_ = 0;
 
-    speakStart_.clear();
-    speakEnd_.clear();
+    speechStart_.clear();
+    speechEnd_.clear();
 
     states_.clear();
 }
@@ -176,34 +176,43 @@ const Vad::State& Vad::Postprocess() {
 
     if (outputProb_ < threshold_ && !triggerd_) {
         // 1. Silence
+#ifdef PPS_DEBUG
         DLOG(INFO) << "{ silence: " << 1.0 * current_sample_ / sample_rate_
                    << " s; prob: " << outputProb_ << " }";
+#endif
         states_.emplace_back(Vad::State::SIL);
     } else if (outputProb_ >= threshold_ && !triggerd_) {
         // 2. Start
         triggerd_ = true;
         speech_start_ =
             current_sample_ - current_chunk_size_ - speech_pad_left_samples_;
+        speech_start_ = std::max(int(speech_start_), 0);
         float start_sec = 1.0 * speech_start_ / sample_rate_;
-        speakStart_.emplace_back(start_sec);
+        speechStart_.emplace_back(start_sec);
+#ifdef PPS_DEBUG
         DLOG(INFO) << "{ speech start: " << start_sec
                    << " s; prob: " << outputProb_ << " }";
+#endif
         states_.emplace_back(Vad::State::START);
     } else if (outputProb_ >= threshold_ - beam_ && triggerd_) {
         // 3. Continue
 
         if (temp_end_ != 0) {
             // speech prob relaxation, speech continues again
+#ifdef PPS_DEBUG
             DLOG(INFO)
                 << "{ speech fake end(sil < min_silence_ms) to continue: "
                 << 1.0 * current_sample_ / sample_rate_
                 << " s; prob: " << outputProb_ << " }";
+#endif
             temp_end_ = 0;
         } else {
             // speech prob relaxation, keep tracking speech
+#ifdef PPS_DEBUG
             DLOG(INFO) << "{ speech continue: "
                        << 1.0 * current_sample_ / sample_rate_
                        << " s; prob: " << outputProb_ << " }";
+#endif
         }
 
         states_.emplace_back(Vad::State::SPEECH);
@@ -216,9 +225,11 @@ const Vad::State& Vad::Postprocess() {
         // check possible speech end
         if (current_sample_ - temp_end_ < min_silence_samples_) {
             // a. silence < min_slience_samples, continue speaking
+#ifdef PPS_DEBUG
             DLOG(INFO) << "{ speech fake end(sil < min_silence_ms): "
                        << 1.0 * current_sample_ / sample_rate_
                        << " s; prob: " << outputProb_ << " }";
+#endif
             states_.emplace_back(Vad::State::SIL);
         } else {
             // b. silence >= min_slience_samples, end speaking
@@ -226,9 +237,11 @@ const Vad::State& Vad::Postprocess() {
             temp_end_ = 0;
             triggerd_ = false;
             auto end_sec = 1.0 * speech_end_ / sample_rate_;
-            speakEnd_.emplace_back(end_sec);
+            speechEnd_.emplace_back(end_sec);
+#ifdef PPS_DEBUG
             DLOG(INFO) << "{ speech end: " << end_sec
                        << " s; prob: " << outputProb_ << " }";
+#endif
             states_.emplace_back(Vad::State::END);
         }
     }
@@ -236,66 +249,63 @@ const Vad::State& Vad::Postprocess() {
     return states_.back();
 }
 
-const std::vector<std::map<std::string, float>> Vad::GetResult(
+std::string Vad::ConvertTime(float time_s) const{
+    float seconds_tmp, minutes_tmp, hours_tmp;
+    float seconds;
+    int minutes, hours;
+ 
+	//	计算小时
+	hours_tmp = time_s / 60 / 60;  // 1
+	hours = (int)hours_tmp;
+ 
+	// 计算分钟
+	minutes_tmp = time_s / 60;
+	if (minutes_tmp >= 60) {
+		minutes = minutes_tmp - 60 * (double)hours;
+	}
+	else {
+		minutes = minutes_tmp;
+	}
+ 
+	// 计算秒数
+	seconds_tmp = (60 * 60 * hours) + (60 * minutes);
+	seconds = time_s - seconds_tmp;
+ 
+	// 输出格式
+    std::stringstream ss;
+    ss << hours << ":" << minutes << ":" << seconds;
+ 
+	return ss.str();
+}
+
+int Vad::GetResult(char* result, int max_len,
     float removeThreshold,
     float expandHeadThreshold,
     float expandTailThreshold,
     float mergeThreshold) const {
     float audioLength = 1.0 * current_sample_ / sample_rate_;
-    if (speakStart_.empty() && speakEnd_.empty()) {
+    if (speechStart_.empty() && speechEnd_.empty()) {
         return {};
     }
-    if (speakEnd_.size() != speakStart_.size()) {
+    if (speechEnd_.size() != speechStart_.size()) {
         // set the audio length as the last end
-        speakEnd_.emplace_back(audioLength);
+        speechEnd_.emplace_back(audioLength);
+    }
+    
+    std::string json = "[";
+
+    for (int i = 0; i < speechStart_.size(); ++i) {
+        json += "{\"s\":\"" + ConvertTime(speechStart_[i]) + "\",\"e\":\"" + ConvertTime(speechEnd_[i]) + "\"},";
     }
-    // Remove too short segments
-    //  auto startIter = speakStart_.begin();
-    //  auto endIter = speakEnd_.begin();
-    //  while (startIter != speakStart_.end()) {
-    //      if (removeThreshold < audioLength &&
-    //          *endIter - *startIter < removeThreshold) {
-    //          startIter = speakStart_.erase(startIter);
-    //          endIter = speakEnd_.erase(endIter);
-    //      } else {
-    //          startIter++;
-    //          endIter++;
-    //      }
-    //  }
-    //  // Expand to avoid to tight cut.
-    //  startIter = speakStart_.begin();
-    //  endIter = speakEnd_.begin();
-    //  *startIter = std::fmax(0.f, *startIter - expandHeadThreshold);
-    //  *endIter = std::fmin(*endIter + expandTailThreshold, *(startIter + 1));
-    //  endIter = speakEnd_.end() - 1;
-    //  startIter = speakStart_.end() - 1;
-    //  *startIter = fmax(*startIter - expandHeadThreshold, *(endIter - 1));
-    //  *endIter = std::fmin(*endIter + expandTailThreshold, audioLength);
-    //  for (int i = 1; i < speakStart_.size() - 1; ++i) {
-    //      speakStart_[i] = std::fmax(speakStart_[i] - expandHeadThreshold,
-    //      speakEnd_[i - 1]);
-    //      speakEnd_[i] = std::fmin(speakEnd_[i] + expandTailThreshold,
-    //      speakStart_[i + 1]);
-    //  }
-    //  // Merge very closed segments
-    //  startIter = speakStart_.begin() + 1;
-    //  endIter = speakEnd_.begin();
-    //  while (startIter != speakStart_.end()) {
-    //      if (*startIter - *endIter < mergeThreshold) {
-    //          startIter = speakStart_.erase(startIter);
-    //          endIter = speakEnd_.erase(endIter);
-    //      } else {
-    //          startIter++;
-    //          endIter++;
-    //      }
-    //  }
-
-    std::vector<std::map<std::string, float>> result;
-    for (int i = 0; i < speakStart_.size(); ++i) {
-        result.emplace_back(std::map<std::string, float>(
-            {{"start", speakStart_[i]}, {"end", speakEnd_[i]}}));
+    json.pop_back();
+    json += "]";
+    
+    if(result != NULL){
+        snprintf(result, max_len, "%s", json.c_str());
+    } else {
+        DLOG(INFO) << "result is NULL";
     }
-    return result;
+    return 0;
 }
 
 std::ostream& operator<<(std::ostream& os, const Vad::State& s) {

runtime/engine/vad/nnet/vad.h

@@ -70,7 +70,7 @@ class Vad : public fastdeploy::FastDeployModel {
 
     const State& Postprocess();
 
-    const std::vector<std::map<std::string, float>> GetResult(
+    int GetResult(char* result, int max_len,
         float removeThreshold = 0.0,
         float expandHeadThreshold = 0.0,
         float expandTailThreshold = 0,
@@ -103,6 +103,7 @@ class Vad : public fastdeploy::FastDeployModel {
 
   private:
     bool Initialize();
+    std::string ConvertTime(float time_s) const;
 
   private:
     std::mutex init_lock_;
@@ -122,8 +123,8 @@ class Vad : public fastdeploy::FastDeployModel {
     // MAX 4294967295 samples / 8sample per ms / 1000 / 60 = 8947 minutes
     float outputProb_;
 
-    std::vector<float> speakStart_;
-    mutable std::vector<float> speakEnd_;
+    std::vector<float> speechStart_;
+    mutable std::vector<float> speechEnd_;
 
     std::vector<State> states_;
 

runtime/engine/vad/nnet/vad_nnet_main.cc

@@ -70,12 +70,6 @@ int main(int argc, char* argv[]) {
 
     std::cout << "RTF=" << timer.Elapsed() / double(num_samples / sr)
               << std::endl;
-
-    std::vector<std::map<std::string, float>> result = vad.GetResult();
-    for (auto& res : result) {
-        std::cout << "speak start: " << res["start"]
-                  << " s, end: " << res["end"] << " s | ";
-    }
     std::cout << "\b\b " << std::endl;
 
     vad.Reset();