I2SDriverESP32V1: NPE

Author: pschatzmann

src/AudioTools/CoreAudio/AudioI2S/I2SESP32V1.h

@@ -253,6 +253,7 @@ class I2SDriverESP32V1 {
       // use the legicy size parameters for frame num
       int size = cfg.buffer_size * cfg.buffer_count;
       int frame_size = get_bits_eff(cfg.bits_per_sample) * cfg.channels / 8;
+      frame_size = (frame_size == 0) ? 1 : frame_size;
       if (size > 0) result.dma_frame_num = size / frame_size;
       LOGI("dma_frame_num: %d", (int)result.dma_frame_num);
       result.auto_clear = cfg.auto_clear;