improve on playback hiccups because of small DMA buffer

- add default values in menuconfig for ADAU1961
- remove bug in main resulting in failed i2s aquisition

Signed-off-by: Karl Osterseher <karli_o@gmx.at>

components/custom_board/Kconfig.projbuild

@@ -51,12 +51,14 @@ menu "Custom Audio Board"
 	menu "I2S master interface"
        	config MASTER_I2S_MCLK_PIN
             int "Master i2s mclk"
+            default 3 if DAC_ADAU1961
             default 0
             help
                 Master audio interface master clock.
 
         config MASTER_I2S_BCK_PIN
             int "Master i2s bck"
+            default 15 if DAC_ADAU1961
             default 23 if DAC_MAX98357
             default 23
             help
@@ -64,6 +66,7 @@ menu "Custom Audio Board"
 
         config MASTER_I2S_LRCK_PIN
             int "Master i2s lrck"
+            default 13 if DAC_ADAU1961
             default 24 if DAC_MAX98357
             default 13
             help
@@ -71,6 +74,7 @@ menu "Custom Audio Board"
 
         config MASTER_I2S_DATAOUT_PIN
             int "Master i2s data out"
+            default 4 if DAC_ADAU1961
             default 25 if DAC_MAX98357
             default 14
             help

components/lightsnapcast/player.c

@@ -108,7 +108,7 @@ static esp_err_t player_setup_i2s(i2s_port_t i2sNum,
   int fi2s_clk;
 
 #if USE_SAMPLE_INSERTION
-  i2sDmaBufMaxLen = 6;
+  i2sDmaBufMaxLen = 12;
   i2sDmaBufCnt = CHNK_CTRL_CNT * (setting->chkInFrames /
                                   i2sDmaBufMaxLen);  // 288 * CHNK_CTRL_CNT;
 #else
@@ -1676,7 +1676,7 @@ static void player_task(void *pvParameters) {
 #if USE_SAMPLE_INSERTION
             // uint32_t sampleSizeInBytes = (uint32_t)(scSet.bits / 8) *
             // scSet.ch * (uint32_t)(miniMedian / (1E6 / scSet.sr));
-            uint32_t sampleSizeInBytes = (scSet.bits / 8) * scSet.ch * 1;
+            uint32_t sampleSizeInBytes = (scSet.bits / 8) * scSet.ch * 2;
 
             if (dir_insert_sample == -1) {
               if (i2s_channel_write(tx_chan, p_payload, sampleSizeInBytes,