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Hello, Xiaozhi.

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Terrence
2024-08-31 18:00:23 +08:00
parent 142653087f
commit 5da7d1755f
28 changed files with 2259 additions and 0 deletions
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main/Application.cc Normal file
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#include "Application.h"
#include <cstring>
#include "esp_log.h"
#include "model_path.h"
#include "SystemInfo.h"
#include "cJSON.h"
#include "silk_resampler.h"
#define TAG "application"
#define INPUT_SAMPLE_RATE 16000
#define DECODE_SAMPLE_RATE 24000
#define OUTPUT_SAMPLE_RATE 24000
Application::Application() {
event_group_ = xEventGroupCreate();
audio_encode_queue_ = xQueueCreate(100, sizeof(AudioEncoderData));
audio_decode_queue_ = xQueueCreate(100, sizeof(AudioPacket*));
srmodel_list_t *models = esp_srmodel_init("model");
for (int i = 0; i < models->num; i++) {
ESP_LOGI(TAG, "Model %d: %s", i, models->model_name[i]);
if (strstr(models->model_name[i], ESP_WN_PREFIX) != NULL) {
wakenet_model_ = models->model_name[i];
} else if (strstr(models->model_name[i], ESP_NSNET_PREFIX) != NULL) {
nsnet_model_ = models->model_name[i];
}
}
opus_encoder_.Configure(INPUT_SAMPLE_RATE, 1);
opus_decoder_ = opus_decoder_create(DECODE_SAMPLE_RATE, 1, NULL);
if (DECODE_SAMPLE_RATE != OUTPUT_SAMPLE_RATE) {
assert(0 == silk_resampler_init(&resampler_state_, DECODE_SAMPLE_RATE, OUTPUT_SAMPLE_RATE, 1));
}
}
Application::~Application() {
if (afe_detection_data_ != nullptr) {
esp_afe_sr_v1.destroy(afe_detection_data_);
}
if (afe_communication_data_ != nullptr) {
esp_afe_vc_v1.destroy(afe_communication_data_);
}
if (opus_decoder_ != nullptr) {
opus_decoder_destroy(opus_decoder_);
}
if (audio_encode_task_stack_ != nullptr) {
free(audio_encode_task_stack_);
}
if (audio_decode_task_stack_ != nullptr) {
free(audio_decode_task_stack_);
}
vQueueDelete(audio_decode_queue_);
vQueueDelete(audio_encode_queue_);
vEventGroupDelete(event_group_);
}
void Application::Start() {
audio_device_.Start(INPUT_SAMPLE_RATE, OUTPUT_SAMPLE_RATE);
audio_device_.OnStateChanged([this]() {
if (audio_device_.playing()) {
SetChatState(kChatStateSpeaking);
} else {
// Check if communication is still running
if (xEventGroupGetBits(event_group_) & COMMUNICATION_RUNNING) {
SetChatState(kChatStateListening);
} else {
SetChatState(kChatStateIdle);
}
}
});
// OPUS encoder / decoder use a lot of stack memory
audio_encode_task_stack_ = (StackType_t*)malloc(4096 * 8);
xTaskCreateStatic([](void* arg) {
Application* app = (Application*)arg;
app->AudioEncodeTask();
}, "opus_encode", 4096 * 8, this, 1, audio_encode_task_stack_, &audio_encode_task_buffer_);
audio_decode_task_stack_ = (StackType_t*)malloc(4096 * 8);
xTaskCreateStatic([](void* arg) {
Application* app = (Application*)arg;
app->AudioDecodeTask();
}, "opus_decode", 4096 * 8, this, 1, audio_decode_task_stack_, &audio_decode_task_buffer_);
wifi_station_.Start();
StartCommunication();
StartDetection();
xEventGroupSetBits(event_group_, DETECTION_RUNNING);
}
void Application::SetChatState(ChatState state) {
chat_state_ = state;
switch (chat_state_) {
case kChatStateIdle:
ESP_LOGI(TAG, "Chat state: idle");
builtin_led_.TurnOff();
break;
case kChatStateConnecting:
ESP_LOGI(TAG, "Chat state: connecting");
builtin_led_.SetBlue();
builtin_led_.TurnOn();
break;
case kChatStateListening:
ESP_LOGI(TAG, "Chat state: listening");
builtin_led_.SetRed();
builtin_led_.TurnOn();
break;
case kChatStateSpeaking:
ESP_LOGI(TAG, "Chat state: speaking");
builtin_led_.SetGreen();
builtin_led_.TurnOn();
break;
}
std::lock_guard<std::recursive_mutex> lock(mutex_);
if (ws_client_ && ws_client_->IsConnected()) {
cJSON* root = cJSON_CreateObject();
cJSON_AddStringToObject(root, "type", "state");
cJSON_AddStringToObject(root, "state", chat_state_ == kChatStateListening ? "listening" : "speaking");
char* json = cJSON_PrintUnformatted(root);
ws_client_->Send(json);
cJSON_Delete(root);
free(json);
}
}
void Application::StartCommunication() {
afe_config_t afe_config = {
.aec_init = false,
.se_init = true,
.vad_init = false,
.wakenet_init = false,
.voice_communication_init = true,
.voice_communication_agc_init = true,
.voice_communication_agc_gain = 10,
.vad_mode = VAD_MODE_3,
.wakenet_model_name = NULL,
.wakenet_model_name_2 = NULL,
.wakenet_mode = DET_MODE_90,
.afe_mode = SR_MODE_HIGH_PERF,
.afe_perferred_core = 0,
.afe_perferred_priority = 5,
.afe_ringbuf_size = 50,
.memory_alloc_mode = AFE_MEMORY_ALLOC_MORE_PSRAM,
.afe_linear_gain = 1.0,
.agc_mode = AFE_MN_PEAK_AGC_MODE_2,
.pcm_config = {
.total_ch_num = 1,
.mic_num = 1,
.ref_num = 0,
.sample_rate = INPUT_SAMPLE_RATE
},
.debug_init = false,
.debug_hook = {{ AFE_DEBUG_HOOK_MASE_TASK_IN, NULL }, { AFE_DEBUG_HOOK_FETCH_TASK_IN, NULL }},
.afe_ns_mode = NS_MODE_SSP,
.afe_ns_model_name = NULL,
.fixed_first_channel = true,
};
afe_communication_data_ = esp_afe_vc_v1.create_from_config(&afe_config);
xTaskCreate([](void* arg) {
Application* app = (Application*)arg;
app->AudioCommunicationTask();
}, "audio_communication", 4096 * 2, this, 5, NULL);
}
void Application::StartDetection() {
afe_config_t afe_config = {
.aec_init = false,
.se_init = true,
.vad_init = false,
.wakenet_init = true,
.voice_communication_init = false,
.voice_communication_agc_init = false,
.voice_communication_agc_gain = 10,
.vad_mode = VAD_MODE_3,
.wakenet_model_name = wakenet_model_,
.wakenet_model_name_2 = NULL,
.wakenet_mode = DET_MODE_90,
.afe_mode = SR_MODE_HIGH_PERF,
.afe_perferred_core = 0,
.afe_perferred_priority = 5,
.afe_ringbuf_size = 50,
.memory_alloc_mode = AFE_MEMORY_ALLOC_MORE_PSRAM,
.afe_linear_gain = 1.0,
.agc_mode = AFE_MN_PEAK_AGC_MODE_2,
.pcm_config = {
.total_ch_num = 1,
.mic_num = 1,
.ref_num = 0,
.sample_rate = INPUT_SAMPLE_RATE
},
.debug_init = false,
.debug_hook = {{ AFE_DEBUG_HOOK_MASE_TASK_IN, NULL }, { AFE_DEBUG_HOOK_FETCH_TASK_IN, NULL }},
.afe_ns_mode = NS_MODE_SSP,
.afe_ns_model_name = NULL,
.fixed_first_channel = true,
};
afe_detection_data_ = esp_afe_sr_v1.create_from_config(&afe_config);
xTaskCreate([](void* arg) {
Application* app = (Application*)arg;
app->AudioFeedTask();
}, "audio_feed", 4096 * 2, this, 5, NULL);
xTaskCreate([](void* arg) {
Application* app = (Application*)arg;
app->AudioDetectionTask();
}, "audio_detection", 4096 * 2, this, 5, NULL);
}
void Application::AudioFeedTask() {
int chunk_size = esp_afe_vc_v1.get_feed_chunksize(afe_detection_data_);
int16_t buffer[chunk_size];
ESP_LOGI(TAG, "Audio feed task started, chunk size: %d", chunk_size);
while (true) {
audio_device_.Read(buffer, chunk_size);
auto event_bits = xEventGroupGetBits(event_group_);
if (event_bits & DETECTION_RUNNING) {
esp_afe_sr_v1.feed(afe_detection_data_, buffer);
} else if (event_bits & COMMUNICATION_RUNNING) {
esp_afe_vc_v1.feed(afe_communication_data_, buffer);
}
}
vTaskDelete(NULL);
}
void Application::AudioDetectionTask() {
auto chunk_size = esp_afe_sr_v1.get_fetch_chunksize(afe_detection_data_);
ESP_LOGI(TAG, "Audio detection task started, chunk size: %d", chunk_size);
while (true) {
xEventGroupWaitBits(event_group_, DETECTION_RUNNING, pdFALSE, pdTRUE, portMAX_DELAY);
auto res = esp_afe_sr_v1.fetch(afe_detection_data_);
if (res == nullptr || res->ret_value == ESP_FAIL) {
ESP_LOGE(TAG, "Error in fetch");
if (res != nullptr) {
ESP_LOGI(TAG, "Error code: %d", res->ret_value);
}
continue;;
}
if (res->wakeup_state == WAKENET_DETECTED) {
ESP_LOGI(TAG, "Wakenet detected");
xEventGroupClearBits(event_group_, DETECTION_RUNNING);
SetChatState(kChatStateConnecting);
StartWebSocketClient();
std::lock_guard<std::recursive_mutex> lock(mutex_);
if (ws_client_ && ws_client_->IsConnected()) {
// If connected, the hello message is already sent, so we can start communication
xEventGroupSetBits(event_group_, COMMUNICATION_RUNNING);
} else {
SetChatState(kChatStateIdle);
xEventGroupSetBits(event_group_, DETECTION_RUNNING);
}
}
}
}
void Application::AudioCommunicationTask() {
int chunk_size = esp_afe_vc_v1.get_fetch_chunksize(afe_communication_data_);
ESP_LOGI(TAG, "Audio communication task started, chunk size: %d", chunk_size);
while (true) {
xEventGroupWaitBits(event_group_, COMMUNICATION_RUNNING, pdFALSE, pdTRUE, portMAX_DELAY);
auto res = esp_afe_vc_v1.fetch(afe_communication_data_);
if (res == nullptr || res->ret_value == ESP_FAIL) {
ESP_LOGE(TAG, "Error in fetch");
if (res != nullptr) {
ESP_LOGI(TAG, "Error code: %d", res->ret_value);
}
continue;
}
// Check if the websocket client is disconnected by the server
{
std::lock_guard<std::recursive_mutex> lock(mutex_);
if (ws_client_ == nullptr || !ws_client_->IsConnected()) {
if (ws_client_ != nullptr) {
delete ws_client_;
ws_client_ = nullptr;
}
if (audio_device_.playing()) {
audio_device_.Break();
}
SetChatState(kChatStateIdle);
xEventGroupSetBits(event_group_, DETECTION_RUNNING);
xEventGroupClearBits(event_group_, COMMUNICATION_RUNNING);
continue;
}
}
if (chat_state_ == kChatStateListening) {
// Send audio data to server
AudioEncoderData data;
data.size = res->data_size;
data.data = malloc(data.size);
memcpy((void*)data.data, res->data, data.size);
xQueueSend(audio_encode_queue_, &data, portMAX_DELAY);
}
}
}
void Application::AudioEncodeTask() {
ESP_LOGI(TAG, "Audio encode task started");
while (true) {
AudioEncoderData data;
xQueueReceive(audio_encode_queue_, &data, portMAX_DELAY);
// Encode audio data
opus_encoder_.Encode(data.data, data.size, [this](const void* data, size_t size) {
std::lock_guard<std::recursive_mutex> lock(mutex_);
if (ws_client_ && ws_client_->IsConnected()) {
ws_client_->Send((const char*)data, size, true);
}
});
free((void*)data.data);
}
}
void Application::AudioDecodeTask() {
int frame_size = DECODE_SAMPLE_RATE / 1000 * opus_duration_ms_;
while (true) {
AudioPacket* packet;
xQueueReceive(audio_decode_queue_, &packet, portMAX_DELAY);
packet->pcm.resize(frame_size);
int ret = opus_decode(opus_decoder_, packet->opus.data(), packet->opus.size(), packet->pcm.data(), frame_size, 0);
if (ret < 0) {
ESP_LOGE(TAG, "Failed to decode audio, error code: %d", ret);
free(packet);
continue;
}
if (DECODE_SAMPLE_RATE != OUTPUT_SAMPLE_RATE) {
int target_size = frame_size * OUTPUT_SAMPLE_RATE / DECODE_SAMPLE_RATE;
std::vector<int16_t> resampled(target_size);
assert(0 == silk_resampler(&resampler_state_, resampled.data(), packet->pcm.data(), frame_size));
packet->pcm = std::move(resampled);
}
audio_device_.QueueAudioPacket(packet);
}
}
void Application::StartWebSocketClient() {
if (ws_client_ != nullptr) {
delete ws_client_;
}
std::string token = "Bearer " + std::string(CONFIG_WEBSOCKET_ACCESS_TOKEN);
ws_client_ = new WebSocketClient();
ws_client_->SetHeader("Authorization", token.c_str());
ws_client_->SetHeader("Device-Id", SystemInfo::GetMacAddress().c_str());
ws_client_->OnConnected([this]() {
ESP_LOGI(TAG, "Websocket connected");
// Send hello message to describe the client
// keys: message type, version, wakeup_model, audio_params (format, sample_rate, channels)
std::string message = "{";
message += "\"type\":\"hello\", \"version\":\"1.0\",";
message += "\"wakeup_model\":\"" + std::string(wakenet_model_) + "\",";
message += "\"audio_params\":{";
message += "\"format\":\"opus\", \"sample_rate\":" + std::to_string(INPUT_SAMPLE_RATE) + ", \"channels\":1";
message += "}}";
ws_client_->Send(message);
});
ws_client_->OnData([this](const char* data, size_t len, bool binary) {
auto packet = new AudioPacket();
if (binary) {
auto header = (AudioDataHeader*)data;
packet->type = kAudioPacketTypeData;
packet->timestamp = ntohl(header->timestamp);
auto payload_size = ntohl(header->payload_size);
packet->opus.resize(payload_size);
memcpy(packet->opus.data(), data + sizeof(AudioDataHeader), payload_size);
} else {
// Parse JSON data
auto root = cJSON_Parse(data);
auto type = cJSON_GetObjectItem(root, "type");
if (type != NULL) {
if (strcmp(type->valuestring, "tts") == 0) {
auto state = cJSON_GetObjectItem(root, "state");
if (strcmp(state->valuestring, "start") == 0) {
packet->type = kAudioPacketTypeStart;
} else if (strcmp(state->valuestring, "stop") == 0) {
packet->type = kAudioPacketTypeStop;
} else if (strcmp(state->valuestring, "sentence_end") == 0) {
packet->type = kAudioPacketTypeSentenceEnd;
} else if (strcmp(state->valuestring, "sentence_start") == 0) {
packet->type = kAudioPacketTypeSentenceStart;
packet->text = cJSON_GetObjectItem(root, "text")->valuestring;
}
}
}
cJSON_Delete(root);
}
xQueueSend(audio_decode_queue_, &packet, portMAX_DELAY);
});
ws_client_->OnError([this](int error) {
ESP_LOGE(TAG, "Websocket error: %d", error);
});
ws_client_->OnClosed([this]() {
ESP_LOGI(TAG, "Websocket closed");
});
if (!ws_client_->Connect(CONFIG_WEBSOCKET_URL)) {
ESP_LOGE(TAG, "Failed to connect to websocket server");
return;
}
}