561 static esp_err_t i2s_destroy_dma_object(i2s_port_t i2s_num, i2s_dma_t **dma)  in i2s_destroy_dma_object()  argument
565     if (!(*dma)) {  in i2s_destroy_dma_object()
569     i2s_delete_dma_buffer(i2s_num, (*dma));  in i2s_destroy_dma_object()
571     if ((*dma)->desc) {  in i2s_destroy_dma_object()
572         free((*dma)->desc);  in i2s_destroy_dma_object()
573         (*dma)->desc = NULL;  in i2s_destroy_dma_object()
576     if ((*dma)->buf) {  in i2s_destroy_dma_object()
577         free((*dma)->buf);  in i2s_destroy_dma_object()
578         (*dma)->buf = NULL;  in i2s_destroy_dma_object()
581     vSemaphoreDelete((*dma)->mux);  in i2s_destroy_dma_object()
583     vQueueDelete((*dma)->queue);  in i2s_destroy_dma_object()
585     free(*dma);  in i2s_destroy_dma_object()
586     *dma = NULL;  in i2s_destroy_dma_object()
591 static esp_err_t i2s_create_dma_object(i2s_port_t i2s_num, i2s_dma_t **dma)  in i2s_create_dma_object()  argument
593     ESP_RETURN_ON_FALSE(dma, ESP_ERR_INVALID_ARG, TAG, "DMA object secondary pointer is NULL");  in i2s_create_dma_object()
594     ESP_RETURN_ON_FALSE((*dma == NULL), ESP_ERR_INVALID_ARG, TAG, "DMA object has been created");  in i2s_create_dma_object()
597     *dma = (i2s_dma_t *) calloc(1, sizeof(i2s_dma_t));  in i2s_create_dma_object()
598     ESP_RETURN_ON_FALSE(*dma, ESP_ERR_NO_MEM, TAG, "DMA object allocate failed");  in i2s_create_dma_object()
600     (*dma)->buf = (char **)heap_caps_calloc(buf_cnt, sizeof(char *), MALLOC_CAP_DMA);  in i2s_create_dma_object()
601     if (!(*dma)->buf) {  in i2s_create_dma_object()
605     (*dma)->desc = (lldesc_t **)heap_caps_calloc(buf_cnt, sizeof(lldesc_t *), MALLOC_CAP_DMA);  in i2s_create_dma_object()
606     if (!(*dma)->desc) {  in i2s_create_dma_object()
610     (*dma)->queue = xQueueCreate(buf_cnt - 1, sizeof(char *));  in i2s_create_dma_object()
611     if (!(*dma)->queue) {  in i2s_create_dma_object()
614     (*dma)->mux = xSemaphoreCreateMutex();  in i2s_create_dma_object()
615     if (!(*dma)->mux) {  in i2s_create_dma_object()
623     i2s_destroy_dma_object(i2s_num, dma);  in i2s_create_dma_object()