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@@ -206,6 +206,15 @@ CFG_TUSB_MEM_SECTION audiod_interface_t _audiod_itf[CFG_TUD_AUDIO];
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extern const uint16_t tud_audio_desc_lengths[];
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+// bSubslotSize for PCM encoding/decoding using support FIFOs
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+#if CFG_TUD_AUDIO_EPSIZE_IN && CFG_TUD_AUDIO_TX_SUPPORT_SW_FIFO_SIZE
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+extern const tud_audio_n_bytes_per_sample_tx[CFG_TUD_AUDIO][CFG_TUD_AUDIO_N_AS_INT];
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+#endif
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+
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+#if CFG_TUD_AUDIO_EPSIZE_OUT && CFG_TUD_AUDIO_RX_SUPPORT_SW_FIFO_SIZE
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+extern const tud_audio_n_bytes_per_sample_rx[CFG_TUD_AUDIO][CFG_TUD_AUDIO_N_AS_INT];
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+#endif
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+
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#if CFG_TUD_AUDIO_EP_OUT_SW_BUFFER_SIZE
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static bool audiod_rx_done_cb(uint8_t rhport, audiod_interface_t* audio, uint16_t n_bytes_received);
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#endif
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