more consistent usage of variables, really use apll rx setting (arendst#21459)

Author: Staars

tasmota/tasmota_xdrv_driver/xdrv_42_0_i2s_0_config_idf51.ino

@@ -109,7 +109,7 @@ typedef struct{
     bool     left_align = true;     // B12 - left alignment
     bool     big_endian = false;    // B13 - big endian
     bool     bit_order_lsb = false; // B14 - lsb first
-    uint16_t dma_frame_num = 512;   // B015/16 - DMA buffer size in samples, 512 should be okay up to ~32000 bps
+    uint16_t dma_frame_num = 576;   // B015/16 - DMA buffer size in samples, 576 should be okay up to ~32000 bps
     uint8_t  dma_desc_num = 3;      // B17 - number of DMA buffers, maybe increased with smaller buffers
     uint8_t  spare[3];              // B018-20 - padding
   } rx;

tasmota/tasmota_xdrv_driver/xdrv_42_0_i2s_3_lib_idf51.ino

@@ -638,10 +638,10 @@ bool TasmotaI2S::startI2SChannel(bool tx, bool rx) {
       case I2S_MODE_STD:
         {
           i2s_std_slot_config_t _slot_cfg = {
-            .data_bit_width = (i2s_data_bit_width_t)bps,
+            .data_bit_width = rx_data_bit_width,
             .slot_bit_width = (i2s_slot_bit_width_t)audio_i2s.Settings->rx.slot_bit_width,
-            .slot_mode = (i2s_slot_mode_t)channels,
-            .slot_mask = (i2s_std_slot_mask_t)audio_i2s.Settings->rx.slot_mask,
+            .slot_mode =  rx_slot_mode,
+            .slot_mask =  (i2s_std_slot_mask_t)_rx_slot_mask,
             .ws_width = audio_i2s.Settings->rx.ws_width,
             .ws_pol = audio_i2s.Settings->rx.ws_pol,
             .bit_shift = audio_i2s.Settings->rx.bit_shift,
@@ -669,7 +669,9 @@ bool TasmotaI2S::startI2SChannel(bool tx, bool rx) {
               },
             },
           };
-
+          if(audio_i2s.Settings->rx.apll == 1){
+              rx_std_cfg.clk_cfg.clk_src = I2S_CLK_SRC_APLL;
+          }
           err = i2s_channel_init_std_mode(_rx_handle, &rx_std_cfg);
           AddLog(LOG_LEVEL_DEBUG, "I2S: RX i2s_channel_init_std_mode with err:%i", err);
           AddLog(LOG_LEVEL_DEBUG, "I2S: RX channel in standard mode with %u bit width on %i channel(s) initialized", bps, rx_slot_mode);