bump to 0.6.2

CMakeLists.txt

@@ -4,7 +4,7 @@
 # CMakeLists in this exact order for cmake to work correctly
 cmake_minimum_required(VERSION 3.16)
 
-set(PROJECT_VER "0.6.1")
+set(PROJECT_VER "0.6.2")
 
 include($ENV{IDF_PATH}/tools/cmake/project.cmake)
 project(xiaozhi)

convert_audio_to_p3.py

@@ -0,0 +1,40 @@
+# convert audio files to protocol v3 stream
+import librosa
+import opuslib
+import struct
+import sys
+import tqdm
+import numpy as np
+
+def encode_audio_to_opus(input_file, output_file):
+    # Load audio file using librosa
+    audio, sample_rate = librosa.load(input_file, sr=None, mono=False, dtype=np.int16)
+    
+    # Get left channel if stereo
+    if audio.ndim == 2:
+        audio = audio[0]
+    
+    # Initialize Opus encoder
+    encoder = opuslib.Encoder(sample_rate, 1, opuslib.APPLICATION_VOIP)
+
+    # Encode audio data to Opus packets
+    # Save encoded data to file
+    with open(output_file, 'wb') as f:
+        sample_rate = 16000 # 16000Hz
+        duration = 60 # 60ms every frame
+        frame_size = int(sample_rate * duration / 1000)
+        for i in tqdm.tqdm(range(0, len(audio) - frame_size, frame_size)):
+            frame = audio[i:i + frame_size]
+            opus_data = encoder.encode(frame.tobytes(), frame_size=frame_size)
+            # protocol format, [1u type, 1u reserved, 2u len, data]
+            packet = struct.pack('>BBH', 0, 0, len(opus_data)) + opus_data
+            f.write(packet)
+
+# Example usage
+if len(sys.argv) != 3:
+    print('Usage: python convert.py <input_file> <output_file>')
+    sys.exit(1)
+
+input_file = sys.argv[1]
+output_file = sys.argv[2]
+encode_audio_to_opus(input_file, output_file)

main/BoxAudioDevice.cc

@@ -219,12 +219,16 @@ void BoxAudioDevice::CreateDuplexChannels() {
 }
 
 int BoxAudioDevice::Read(int16_t *buffer, int samples) {
-    ESP_ERROR_CHECK_WITHOUT_ABORT(esp_codec_dev_read(input_dev_, (void*)buffer, samples * sizeof(int16_t)));
+    if (input_enabled_) {
+        ESP_ERROR_CHECK_WITHOUT_ABORT(esp_codec_dev_read(input_dev_, (void*)buffer, samples * sizeof(int16_t)));
+    }
     return samples;
 }
 
 int BoxAudioDevice::Write(const int16_t *buffer, int samples) {
-    ESP_ERROR_CHECK_WITHOUT_ABORT(esp_codec_dev_write(output_dev_, (void*)buffer, samples * sizeof(int16_t)));
+    if (output_enabled_) {
+        ESP_ERROR_CHECK_WITHOUT_ABORT(esp_codec_dev_write(output_dev_, (void*)buffer, samples * sizeof(int16_t)));
+    }
     return samples;
 }