diff options
Diffstat (limited to 'src/class/audio/audio_device.c')
| -rw-r--r-- | src/class/audio/audio_device.c | 94 |
1 files changed, 57 insertions, 37 deletions
diff --git a/src/class/audio/audio_device.c b/src/class/audio/audio_device.c index 5ca02f39b..2af3da324 100644 --- a/src/class/audio/audio_device.c +++ b/src/class/audio/audio_device.c @@ -294,10 +294,12 @@ typedef struct #endif -#if CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN - uint8_t ep_int_ctr; // Audio control interrupt EP. +#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP + uint8_t ep_int; // Audio control interrupt EP. #endif + bool mounted; // Device opened + /*------------- From this point, data is not cleared by bus reset -------------*/ uint16_t desc_length; // Length of audio function descriptor @@ -351,8 +353,8 @@ typedef struct #endif // Audio control interrupt buffer - no FIFO - 6 Bytes according to UAC 2 specification (p. 74) -#if CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN - CFG_TUSB_MEM_ALIGN uint8_t ep_int_ctr_buf[CFG_TUD_AUDIO_INT_CTR_EP_IN_SW_BUFFER_SIZE]; +#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP + CFG_TUSB_MEM_ALIGN uint8_t ep_int_buf[6]; #endif // Decoding parameters - parameters are set when alternate AS interface is set by host @@ -479,23 +481,7 @@ bool tud_audio_n_mounted(uint8_t func_id) TU_VERIFY(func_id < CFG_TUD_AUDIO); audiod_function_t* audio = &_audiod_fct[func_id]; -#if CFG_TUD_AUDIO_ENABLE_EP_OUT - if (audio->ep_out == 0) return false; -#endif - -#if CFG_TUD_AUDIO_ENABLE_EP_IN - if (audio->ep_in == 0) return false; -#endif - -#if CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN - if (audio->ep_int_ctr == 0) return false; -#endif - -#if CFG_TUD_AUDIO_ENABLE_FEEDBACK_EP - if (audio->ep_fb == 0) return false; -#endif - - return true; + return audio->mounted; } //--------------------------------------------------------------------+ @@ -818,24 +804,30 @@ tu_fifo_t* tud_audio_n_get_tx_support_ff(uint8_t func_id, uint8_t ff_idx) #endif -#if CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN - -// If no interrupt transmit is pending bytes get written into buffer and a transmit is scheduled - once transmit completed tud_audio_int_ctr_done_cb() is called in inform user -uint16_t tud_audio_int_ctr_n_write(uint8_t func_id, uint8_t const* buffer, uint16_t len) +#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP +// If no interrupt transmit is pending bytes get written into buffer and a transmit is scheduled - once transmit completed tud_audio_int_done_cb() is called in inform user +bool tud_audio_int_n_write(uint8_t func_id, const audio_interrupt_data_t * data) { TU_VERIFY(func_id < CFG_TUD_AUDIO && _audiod_fct[func_id].p_desc != NULL); - // We write directly into the EP's buffer - abort if previous transfer not complete - TU_VERIFY(!usbd_edpt_busy(_audiod_fct[func_id].rhport, _audiod_fct[func_id].ep_int_ctr)); + TU_VERIFY(_audiod_fct[func_id].ep_int != 0); - TU_VERIFY(tu_memcpy_s(_audiod_fct[func_id].ep_int_ctr_buf, CFG_TUD_AUDIO_INT_CTR_EP_IN_SW_BUFFER_SIZE, buffer, len)==0); + // We write directly into the EP's buffer - abort if previous transfer not complete + TU_VERIFY(usbd_edpt_claim(_audiod_fct[func_id].rhport, _audiod_fct[func_id].ep_int)); - // Schedule transmit - TU_VERIFY(usbd_edpt_xfer(_audiod_fct[func_id].rhport, _audiod_fct[func_id].ep_int_ctr, _audiod_fct[func_id].ep_int_ctr_buf, len)); + // Check length + if (tu_memcpy_s(_audiod_fct[func_id].ep_int_buf, sizeof(_audiod_fct[func_id].ep_int_buf), data, sizeof(audio_interrupt_data_t)) == 0) + { + // Schedule transmit + TU_ASSERT(usbd_edpt_xfer(_audiod_fct[func_id].rhport, _audiod_fct[func_id].ep_int, _audiod_fct[func_id].ep_int_buf, sizeof(_audiod_fct[func_id].ep_int_buf)), 0); + } else + { + // Release endpoint since we don't make any transfer + usbd_edpt_release(_audiod_fct[func_id].rhport, _audiod_fct[func_id].ep_int); + } return true; } - #endif // This function is called once a transmit of an audio packet was successfully completed. Here, we encode samples and place it in IN EP's buffer for next transmission. @@ -1440,10 +1432,11 @@ uint16_t audiod_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uin // Verify version is correct - this check can be omitted TU_VERIFY(itf_desc->bInterfaceProtocol == AUDIO_INT_PROTOCOL_CODE_V2); - // Verify interrupt control EP is enabled if demanded by descriptor - this should be best some static check however - this check can be omitted - if (itf_desc->bNumEndpoints == 1) // 0 or 1 EPs are allowed + // Verify interrupt control EP is enabled if demanded by descriptor + TU_ASSERT(itf_desc->bNumEndpoints <= 1); // 0 or 1 EPs are allowed + if (itf_desc->bNumEndpoints == 1) { - TU_VERIFY(CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN > 0); + TU_ASSERT(CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP); } // Alternate setting MUST be zero - this check can be omitted @@ -1587,6 +1580,32 @@ uint16_t audiod_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uin } #endif // CFG_TUD_AUDIO_EP_IN_FLOW_CONTROL +#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP + { + uint8_t const *p_desc = _audiod_fct[i].p_desc; + uint8_t const *p_desc_end = p_desc + _audiod_fct[i].desc_length - TUD_AUDIO_DESC_IAD_LEN; + // Condition modified from p_desc < p_desc_end to prevent gcc>=12 strict-overflow warning + while (p_desc_end - p_desc > 0) + { + // For each endpoint + if (tu_desc_type(p_desc) == TUSB_DESC_ENDPOINT) + { + tusb_desc_endpoint_t const* desc_ep = (tusb_desc_endpoint_t const *) p_desc; + uint8_t const ep_addr = desc_ep->bEndpointAddress; + // If endpoint is input-direction and interrupt-type + if (tu_edpt_dir(ep_addr) == TUSB_DIR_IN && desc_ep->bmAttributes.xfer == TUSB_XFER_INTERRUPT) + { + // Store endpoint number and open endpoint + _audiod_fct[i].ep_int = ep_addr; + TU_ASSERT(usbd_edpt_open(_audiod_fct[i].rhport, desc_ep)); + } + } + p_desc = tu_desc_next(p_desc); + } + } +#endif + + _audiod_fct[i].mounted = true; break; } } @@ -2113,10 +2132,10 @@ bool audiod_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint3 { audiod_function_t* audio = &_audiod_fct[func_id]; -#if CFG_TUD_AUDIO_INT_CTR_EPSIZE_IN +#if CFG_TUD_AUDIO_ENABLE_INTERRUPT_EP // Data transmission of control interrupt finished - if (audio->ep_int_ctr == ep_addr) + if (audio->ep_int == ep_addr) { // According to USB2 specification, maximum payload of interrupt EP is 8 bytes on low speed, 64 bytes on full speed, and 1024 bytes on high speed (but only if an alternate interface other than 0 is used - see specification p. 49) // In case there is nothing to send we have to return a NAK - this is taken care of by PHY ??? @@ -2125,7 +2144,8 @@ bool audiod_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint3 // I assume here, that things above are handled by PHY // All transmission is done - what remains to do is to inform job was completed - if (tud_audio_int_ctr_done_cb) TU_VERIFY(tud_audio_int_ctr_done_cb(rhport, (uint16_t) xferred_bytes)); + if (tud_audio_int_done_cb) tud_audio_int_done_cb(rhport); + return true; } #endif |