rename writeSilence to write_silence()

Author: pschatzmann

src/BluetoothA2DPOutput.h

@@ -27,7 +27,7 @@ class BluetoothA2DPOutput {
   virtual void set_sample_rate(int rate) = 0;
   virtual void set_output_active(bool active) = 0;
 
-  virtual void writeSilence(size_t len) {
+  virtual void write_silence(size_t len) {
     uint8_t silence[64] = {};
     for (size_t i = 0; i < len; i += sizeof(silence))
       write(silence, std::min(sizeof(silence), len - i));

src/BluetoothA2DPSink.cpp

@@ -654,7 +654,7 @@ void BluetoothA2DPSink::handle_audio_state(uint16_t event, void *p_param) {
     } else if (ESP_A2D_AUDIO_STATE_SUSPEND == a2d->audio_stat.state) {
        // flush silence through DMA before deactivating to avoid a noise pop
        if (is_output && is_i2s_active)
-         out->writeSilence(2 * 1024);
+         out->write_silence(2 * 1024);
        // deactivate only when is_output_active_by_state is true
        if (is_output_active_by_state) set_i2s_active(false);
     }