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- /**
- * Copyright (c) 2016 - 2020, Nordic Semiconductor ASA
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- * list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form, except as embedded into a Nordic
- * Semiconductor ASA integrated circuit in a product or a software update for
- * such product, must reproduce the above copyright notice, this list of
- * conditions and the following disclaimer in the documentation and/or other
- * materials provided with the distribution.
- *
- * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
- * contributors may be used to endorse or promote products derived from this
- * software without specific prior written permission.
- *
- * 4. This software, with or without modification, must only be used with a
- * Nordic Semiconductor ASA integrated circuit.
- *
- * 5. Any software provided in binary form under this license must not be reverse
- * engineered, decompiled, modified and/or disassembled.
- *
- * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
- * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
- * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
- #include "sdk_common.h"
- #if NRF_MODULE_ENABLED(APP_USBD_AUDIO)
- #include "app_usbd_audio.h"
- #include "app_util_platform.h"
- /**
- * @defgroup app_usbd_audio_internals USBD Audio internals
- * @{
- * @ingroup app_usbd_audio
- * @internal
- */
- STATIC_ASSERT(sizeof(app_usbd_audio_ac_iface_header_desc_t) == 8);
- STATIC_ASSERT(sizeof(app_usbd_audio_input_terminal_desc_t) == 12);
- STATIC_ASSERT(sizeof(app_usbd_audio_output_terminal_desc_t) == 9);
- STATIC_ASSERT(sizeof(app_usbd_audio_feature_unit_desc_t) == 6);
- STATIC_ASSERT(sizeof(app_usbd_audio_as_iface_desc_t) == 7);
- STATIC_ASSERT(sizeof(app_usbd_audio_as_format_type_one_desc_t) == 8);
- STATIC_ASSERT(sizeof(app_usbd_audio_as_format_type_two_desc_t) == 9);
- STATIC_ASSERT(sizeof(app_usbd_audio_as_format_type_three_desc_t) == 8);
- STATIC_ASSERT(sizeof(app_usbd_audio_as_endpoint_desc_t) == 7);
- #define APP_USBD_AUDIO_CONTROL_IFACE_IDX 0 /**< Audio class control interface index */
- #define APP_USBD_AUDIO_STREAMING_IFACE_IDX 1 /**< Audio class streaming interface index */
- #define APP_USBD_CDC_AUDIO_STREAMING_EP_IDX 0 /**< Audio streaming isochronous endpoint index */
- /**
- * @brief Auxiliary function to access audio class instance data.
- *
- * @param[in] p_inst Class instance data.
- * @return Audio class instance data @ref app_usbd_audio_t
- */
- static inline app_usbd_audio_t const * audio_get(app_usbd_class_inst_t const * p_inst)
- {
- ASSERT(p_inst != NULL);
- return (app_usbd_audio_t const *)p_inst;
- }
- /**
- * @brief Auxiliary function to access audio class context data.
- *
- * @param[in] p_audio Audio class instance data.
- * @return Audio class context data @ref app_usbd_audio_ctx_t
- */
- static inline app_usbd_audio_ctx_t * audio_ctx_get(app_usbd_audio_t const * p_audio)
- {
- ASSERT(p_audio != NULL);
- ASSERT(p_audio->specific.p_data != NULL);
- return &p_audio->specific.p_data->ctx;
- }
- /**
- * @brief User event handler.
- *
- * @param[in] p_inst Class instance.
- * @param[in] event user Event type @ref app_usbd_audio_user_event_t
- */
- static inline void user_event_handler(
- app_usbd_class_inst_t const * p_inst,
- app_usbd_audio_user_event_t event)
- {
- app_usbd_audio_t const * p_audio = audio_get(p_inst);
- if (p_audio->specific.inst.user_ev_handler != NULL)
- {
- p_audio->specific.inst.user_ev_handler(p_inst, event);
- }
- }
- /**
- * @brief Select interface.
- *
- * @param[in,out] p_inst Instance of the class.
- * @param[in] iface_idx Index of the interface inside class structure.
- * @param[in] alternate Alternate setting that should be selected.
- */
- static ret_code_t iface_select(
- app_usbd_class_inst_t const * const p_inst,
- uint8_t iface_idx,
- uint8_t alternate)
- {
- app_usbd_class_iface_conf_t const * p_iface = app_usbd_class_iface_get(p_inst, iface_idx);
- /* Simple check if this is data interface */
- uint8_t const ep_count = app_usbd_class_iface_ep_count_get(p_iface);
- if (ep_count > 0)
- {
- if (alternate > 1)
- {
- return NRF_ERROR_INVALID_PARAM;
- }
- app_usbd_audio_t const * p_audio = audio_get(p_inst);
- app_usbd_audio_ctx_t * p_audio_ctx = audio_ctx_get(p_audio);
- p_audio_ctx->streaming = (alternate != 0);
- uint8_t i;
- for (i = 0; i < ep_count; ++i)
- {
- nrf_drv_usbd_ep_t ep_addr =
- app_usbd_class_ep_address_get(app_usbd_class_iface_ep_get(p_iface, i));
- if (alternate)
- {
- app_usbd_ep_enable(ep_addr);
- }
- else
- {
- app_usbd_ep_disable(ep_addr);
- }
- }
- return NRF_SUCCESS;
- }
- return NRF_ERROR_NOT_SUPPORTED;
- }
- static void iface_deselect(
- app_usbd_class_inst_t const * const p_inst,
- uint8_t iface_idx)
- {
- app_usbd_class_iface_conf_t const * p_iface = app_usbd_class_iface_get(p_inst, iface_idx);
- /* Simple check if this is data interface */
- if (p_iface->ep_cnt > 0)
- {
- app_usbd_audio_t const * p_audio = audio_get(p_inst);
- app_usbd_audio_ctx_t * p_audio_ctx = audio_ctx_get(p_audio);
- p_audio_ctx->streaming = false;
- }
- /* Note that all the interface endpoints would be disabled automatically after this function */
- }
- static uint8_t iface_selection_get(
- app_usbd_class_inst_t const * const p_inst,
- uint8_t iface_idx)
- {
- app_usbd_class_iface_conf_t const * p_iface = app_usbd_class_iface_get(p_inst, iface_idx);
- /* Simple check if this is data interface */
- uint8_t const ep_count = app_usbd_class_iface_ep_count_get(p_iface);
- if (ep_count > 0)
- {
- app_usbd_audio_t const * p_audio = audio_get(p_inst);
- app_usbd_audio_ctx_t * p_audio_ctx = audio_ctx_get(p_audio);
- return (p_audio_ctx->streaming) ? 1 : 0;
- }
- return 0;
- }
- /**
- * @brief Internal SETUP standard IN request handler.
- *
- * @param[in] p_inst Generic class instance.
- * @param[in] p_setup_ev Setup event.
- *
- * @return Standard error code.
- * @retval NRF_SUCCESS Request handled correctly.
- * @retval NRF_ERROR_NOT_SUPPORTED Request is not supported.
- */
- static ret_code_t setup_req_std_in(app_usbd_class_inst_t const * p_inst,
- app_usbd_setup_evt_t const * p_setup_ev)
- {
- /* Only Get Descriptor standard IN request is supported by Audio class */
- if ((app_usbd_setup_req_rec(p_setup_ev->setup.bmRequestType) == APP_USBD_SETUP_REQREC_INTERFACE)
- &&
- (p_setup_ev->setup.bRequest == APP_USBD_SETUP_STDREQ_GET_DESCRIPTOR))
- {
- size_t dsc_len = 0;
- size_t max_size;
- uint8_t * p_trans_buff = app_usbd_core_setup_transfer_buff_get(&max_size);
- /* Try to find descriptor in class internals*/
- ret_code_t ret = app_usbd_class_descriptor_find(
- p_inst,
- p_setup_ev->setup.wValue.hb,
- p_setup_ev->setup.wValue.lb,
- p_trans_buff,
- &dsc_len);
- if (ret != NRF_ERROR_NOT_FOUND)
- {
- ASSERT(dsc_len < NRF_DRV_USBD_EPSIZE);
- return app_usbd_core_setup_rsp(&(p_setup_ev->setup), p_trans_buff, dsc_len);
- }
- }
- return NRF_ERROR_NOT_SUPPORTED;
- }
- /**
- * @brief Internal SETUP class IN request handler.
- *
- * @param[in] p_inst Generic class instance.
- * @param[in] p_setup_ev Setup event.
- *
- * @return Standard error code.
- * @retval NRF_SUCCESS Request handled correctly.
- * @retval NRF_ERROR_NOT_SUPPORTED Request is not supported.
- */
- static ret_code_t setup_req_class_in(
- app_usbd_class_inst_t const * p_inst,
- app_usbd_setup_evt_t const * p_setup_ev)
- {
- switch (p_setup_ev->setup.bRequest)
- {
- case APP_USBD_AUDIO_REQ_GET_CUR:
- case APP_USBD_AUDIO_REQ_GET_MIN:
- case APP_USBD_AUDIO_REQ_GET_MAX:
- case APP_USBD_AUDIO_REQ_SET_RES:
- case APP_USBD_AUDIO_REQ_GET_MEM:
- {
- app_usbd_audio_t const * p_audio = audio_get(p_inst);
- app_usbd_audio_ctx_t * p_audio_ctx = audio_ctx_get(p_audio);
- p_audio_ctx->request.req_type = (app_usbd_audio_req_type_t)p_setup_ev->setup.bRequest;
- p_audio_ctx->request.control = p_setup_ev->setup.wValue.hb;
- p_audio_ctx->request.channel = p_setup_ev->setup.wValue.lb;
- p_audio_ctx->request.interface = p_setup_ev->setup.wIndex.hb;
- p_audio_ctx->request.entity = p_setup_ev->setup.wIndex.lb;
- p_audio_ctx->request.length = p_setup_ev->setup.wLength.w;
- p_audio_ctx->request.req_target = APP_USBD_AUDIO_CLASS_REQ_IN;
- app_usbd_setup_reqrec_t rec = app_usbd_setup_req_rec(p_setup_ev->setup.bmRequestType);
- if (rec == APP_USBD_SETUP_REQREC_ENDPOINT)
- {
- p_audio_ctx->request.req_target = APP_USBD_AUDIO_EP_REQ_IN;
- }
- user_event_handler((app_usbd_class_inst_t const *)p_audio,
- APP_USBD_AUDIO_USER_EVT_CLASS_REQ);
- return app_usbd_core_setup_rsp(&p_setup_ev->setup,
- p_audio_ctx->request.payload,
- p_audio_ctx->request.length);
- }
- default:
- break;
- }
- return NRF_ERROR_NOT_SUPPORTED;
- }
- static ret_code_t audio_req_out_data_cb(nrf_drv_usbd_ep_status_t status, void * p_context)
- {
- if (status == NRF_USBD_EP_OK)
- {
- app_usbd_audio_t const * p_audio = p_context;
- user_event_handler((app_usbd_class_inst_t const *)p_audio,
- APP_USBD_AUDIO_USER_EVT_CLASS_REQ);
- }
- return NRF_SUCCESS;
- }
- static ret_code_t audio_req_out(
- app_usbd_class_inst_t const * p_inst,
- app_usbd_setup_evt_t const * p_setup_ev)
- {
- app_usbd_audio_t const * p_audio = audio_get(p_inst);
- app_usbd_audio_ctx_t * p_audio_ctx = audio_ctx_get(p_audio);
- p_audio_ctx->request.req_type = (app_usbd_audio_req_type_t)p_setup_ev->setup.bRequest;
- p_audio_ctx->request.control = p_setup_ev->setup.wValue.hb;
- p_audio_ctx->request.channel = p_setup_ev->setup.wValue.lb;
- p_audio_ctx->request.interface = p_setup_ev->setup.wIndex.hb;
- p_audio_ctx->request.entity = p_setup_ev->setup.wIndex.lb;
- p_audio_ctx->request.length = p_setup_ev->setup.wLength.w;
- p_audio_ctx->request.req_target = APP_USBD_AUDIO_CLASS_REQ_OUT;
- if (app_usbd_setup_req_rec(p_setup_ev->setup.bmRequestType) == APP_USBD_SETUP_REQREC_ENDPOINT)
- {
- p_audio_ctx->request.req_target = APP_USBD_AUDIO_EP_REQ_OUT;
- }
- /*Request setup data*/
- NRF_DRV_USBD_TRANSFER_OUT(transfer, p_audio_ctx->request.payload, p_audio_ctx->request.length);
- ret_code_t ret;
- CRITICAL_REGION_ENTER();
- ret = app_usbd_ep_transfer(NRF_DRV_USBD_EPOUT0, &transfer);
- if (ret == NRF_SUCCESS)
- {
- app_usbd_core_setup_data_handler_desc_t desc = {
- .handler = audio_req_out_data_cb,
- .p_context = (void *)p_audio
- };
- ret = app_usbd_core_setup_data_handler_set(NRF_DRV_USBD_EPOUT0, &desc);
- }
- CRITICAL_REGION_EXIT();
- return ret;
- }
- /**
- * @brief Internal SETUP class OUT request handler.
- *
- * @param[in] p_inst Generic class instance.
- * @param[in] p_setup_ev Setup event.
- *
- * @return Standard error code
- * @retval NRF_SUCCESS Request handled correctly.
- * @retval NRF_ERROR_NOT_SUPPORTED Request is not supported.
- */
- static ret_code_t setup_req_class_out(
- app_usbd_class_inst_t const * p_inst,
- app_usbd_setup_evt_t const * p_setup_ev)
- {
- switch (p_setup_ev->setup.bRequest)
- {
- case APP_USBD_AUDIO_REQ_SET_CUR:
- case APP_USBD_AUDIO_REQ_SET_MIN:
- case APP_USBD_AUDIO_REQ_SET_MAX:
- case APP_USBD_AUDIO_REQ_SET_RES:
- case APP_USBD_AUDIO_REQ_SET_MEM:
- return audio_req_out(p_inst, p_setup_ev);
- default:
- break;
- }
- return NRF_ERROR_NOT_SUPPORTED;
- }
- /**
- * @brief Control endpoint handle.
- *
- * @param[in] p_inst Generic class instance.
- * @param[in] p_setup_ev Setup event.
- *
- * @return Standard error code.
- * @retval NRF_SUCCESS Request handled correctly.
- * @retval NRF_ERROR_NOT_SUPPORTED Request is not supported.
- */
- static ret_code_t setup_event_handler(
- app_usbd_class_inst_t const * p_inst,
- app_usbd_setup_evt_t const * p_setup_ev)
- {
- ASSERT(p_inst != NULL);
- ASSERT(p_setup_ev != NULL);
- if (app_usbd_setup_req_dir(p_setup_ev->setup.bmRequestType) == APP_USBD_SETUP_REQDIR_IN)
- {
- switch (app_usbd_setup_req_typ(p_setup_ev->setup.bmRequestType))
- {
- case APP_USBD_SETUP_REQTYPE_STD:
- return setup_req_std_in(p_inst, p_setup_ev);
- case APP_USBD_SETUP_REQTYPE_CLASS:
- return setup_req_class_in(p_inst, p_setup_ev);
- default:
- break;
- }
- }
- else /*APP_USBD_SETUP_REQDIR_OUT*/
- {
- switch (app_usbd_setup_req_typ(p_setup_ev->setup.bmRequestType))
- {
- case APP_USBD_SETUP_REQTYPE_CLASS:
- return setup_req_class_out(p_inst, p_setup_ev);
- default:
- break;
- }
- }
- return NRF_ERROR_NOT_SUPPORTED;
- }
- /**
- * @brief Endpoint IN event handler.
- *
- * @param[in] p_inst Generic class instance.
- *
- * @return Standard error code.
- * @retval NRF_SUCCESS Request handled correctly.
- * @retval NRF_ERROR_NOT_SUPPORTED Request is not supported.
- */
- static ret_code_t endpoint_in_event_handler(app_usbd_class_inst_t const * p_inst)
- {
- user_event_handler(p_inst, APP_USBD_AUDIO_USER_EVT_TX_DONE);
- return NRF_SUCCESS;
- }
- /**
- * @brief Endpoint OUT event handler.
- *
- * @param[in] p_inst Generic class instance.
- *
- * @return Standard error code.
- * @retval NRF_SUCCESS Request handled correctly.
- * @retval NRF_ERROR_NOT_SUPPORTED Request is not supported.
- */
- static ret_code_t endpoint_out_event_handler(app_usbd_class_inst_t const * p_inst)
- {
- user_event_handler(p_inst, APP_USBD_AUDIO_USER_EVT_RX_DONE);
- return NRF_SUCCESS;
- }
- /**
- * @brief Auxiliary function to access isochronous endpoint address.
- *
- * @param[in] p_inst Class instance data.
- *
- * @return ISO endpoint address.
- */
- static inline nrf_drv_usbd_ep_t ep_iso_addr_get(app_usbd_class_inst_t const * p_inst)
- {
- app_usbd_class_iface_conf_t const * class_iface;
- class_iface = app_usbd_class_iface_get(p_inst, APP_USBD_AUDIO_STREAMING_IFACE_IDX);
- app_usbd_class_ep_conf_t const * ep_cfg;
- ep_cfg = app_usbd_class_iface_ep_get(class_iface, APP_USBD_CDC_AUDIO_STREAMING_EP_IDX);
- return app_usbd_class_ep_address_get(ep_cfg);
- }
- /**
- * @brief @ref app_usbd_class_methods_t::event_handler
- */
- static ret_code_t audio_event_handler(
- app_usbd_class_inst_t const * p_inst,
- app_usbd_complex_evt_t const * p_event)
- {
- ASSERT(p_inst != NULL);
- ASSERT(p_event != NULL);
- ret_code_t ret = NRF_SUCCESS;
- switch (p_event->app_evt.type)
- {
- case APP_USBD_EVT_DRV_RESET:
- break;
- case APP_USBD_EVT_DRV_SETUP:
- ret = setup_event_handler(p_inst, (app_usbd_setup_evt_t const *)p_event);
- break;
- case APP_USBD_EVT_DRV_EPTRANSFER:
- if (NRF_USBD_EPIN_CHECK(p_event->drv_evt.data.eptransfer.ep))
- {
- ret = endpoint_in_event_handler(p_inst);
- }
- else
- {
- ret = endpoint_out_event_handler(p_inst);
- }
- break;
- case APP_USBD_EVT_DRV_SUSPEND:
- break;
- case APP_USBD_EVT_DRV_RESUME:
- break;
- case APP_USBD_EVT_INST_APPEND:
- {
- app_usbd_audio_t const * p_audio = audio_get(p_inst);
- app_usbd_audio_ctx_t * p_audio_ctx = audio_ctx_get(p_audio);
- if(p_audio_ctx->sof_handler != NULL)
- {
- ret = app_usbd_class_sof_interrupt_register(p_inst, p_audio_ctx->sof_handler);
- APP_ERROR_CHECK(ret);
- }
- break;
- }
- case APP_USBD_EVT_INST_REMOVE:
- {
- app_usbd_audio_t const * p_audio = audio_get(p_inst);
- app_usbd_audio_ctx_t * p_audio_ctx = audio_ctx_get(p_audio);
- if(p_audio_ctx->sof_handler != NULL)
- {
- ret = app_usbd_class_sof_interrupt_unregister(p_inst);
- APP_ERROR_CHECK(ret);
- }
- break;
- }
- case APP_USBD_EVT_STARTED:
- break;
- case APP_USBD_EVT_STOPPED:
- break;
- default:
- ret = NRF_ERROR_NOT_SUPPORTED;
- break;
- }
- return ret;
- }
- static size_t audio_get_format_descriptor_size(app_usbd_class_inst_t const * p_inst)
- {
- app_usbd_audio_t const * p_audio = audio_get(p_inst);
- if (p_audio->specific.inst.p_format_dsc == NULL)
- {
- return 0;
- }
- return p_audio->specific.inst.p_format_dsc->size;
- }
- static size_t audio_get_format_descriptor_data(app_usbd_class_inst_t const * p_inst,
- uint32_t cur_byte)
- {
- app_usbd_audio_t const * p_audio = audio_get(p_inst);
- return p_audio->specific.inst.p_format_dsc->p_data[cur_byte];
- }
- static size_t audio_get_input_descriptor_size(app_usbd_class_inst_t const * p_inst)
- {
- app_usbd_audio_t const * p_audio = audio_get(p_inst);
- if (p_audio->specific.inst.p_input_dsc == NULL)
- {
- return 0;
- }
- return p_audio->specific.inst.p_input_dsc->size;
- }
- static size_t audio_get_input_descriptor_data(app_usbd_class_inst_t const * p_inst,
- uint32_t cur_byte)
- {
- app_usbd_audio_t const * p_audio = audio_get(p_inst);
- return p_audio->specific.inst.p_input_dsc->p_data[cur_byte];
- }
- static size_t audio_get_output_descriptor_size(app_usbd_class_inst_t const * p_inst)
- {
- app_usbd_audio_t const * p_audio = audio_get(p_inst);
- if (p_audio->specific.inst.p_output_dsc == NULL)
- {
- return 0;
- }
- return p_audio->specific.inst.p_output_dsc->size;
- }
- static size_t audio_get_output_descriptor_data(app_usbd_class_inst_t const * p_inst,
- uint32_t cur_byte)
- {
- app_usbd_audio_t const * p_audio = audio_get(p_inst);
- return p_audio->specific.inst.p_output_dsc->p_data[cur_byte];
- }
- static size_t audio_get_feature_descriptor_size(app_usbd_class_inst_t const * p_inst)
- {
- app_usbd_audio_t const * p_audio = audio_get(p_inst);
- if (p_audio->specific.inst.p_feature_dsc == NULL)
- {
- return 0;
- }
- return p_audio->specific.inst.p_feature_dsc->size;
- }
- static size_t audio_get_feature_descriptor_data(app_usbd_class_inst_t const * p_inst,
- uint32_t cur_byte)
- {
- app_usbd_audio_t const * p_audio = audio_get(p_inst);
- return p_audio->specific.inst.p_feature_dsc->p_data[cur_byte];
- }
- static uint8_t audio_get_control_interface_number(app_usbd_class_inst_t const * p_inst)
- {
- app_usbd_class_iface_conf_t const * ifce = 0;
- ifce = app_usbd_class_iface_get(p_inst, 0);
- return app_usbd_class_iface_number_get(ifce);
- }
- /**
- * @brief @ref app_usbd_class_methods_t::feed_descriptors
- */
- static bool audio_feed_descriptors(app_usbd_class_descriptor_ctx_t * p_ctx,
- app_usbd_class_inst_t const * p_inst,
- uint8_t * p_buff,
- size_t max_size)
- {
- static uint8_t ifaces = 0;
- ifaces = app_usbd_class_iface_count_get(p_inst);
- ASSERT(ifaces == 2);
- app_usbd_audio_t const * p_audio = audio_get(p_inst);
- APP_USBD_CLASS_DESCRIPTOR_BEGIN(p_ctx, p_buff, max_size);
- /* CONTROL INTERFACE DESCRIPTOR */
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x09); // bLength
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_DESCRIPTOR_INTERFACE); // bDescriptorType = Interface
- static app_usbd_class_iface_conf_t const * p_cur_iface = NULL;
- p_cur_iface = app_usbd_class_iface_get(p_inst, 0);
- APP_USBD_CLASS_DESCRIPTOR_WRITE(app_usbd_class_iface_number_get(p_cur_iface)); // bInterfaceNumber
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // bAlternateSetting
- APP_USBD_CLASS_DESCRIPTOR_WRITE(app_usbd_class_iface_ep_count_get(p_cur_iface)); // bNumEndpoints
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_CLASS); // bInterfaceClass = Audio
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_SUBCLASS_AUDIOCONTROL); // bInterfaceSubclass (Audio Control)
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_CLASS_PROTOCOL_UNDEFINED); // bInterfaceProtocol
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // iInterface
- /* HEADER INTERFACE */
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x09); // bLength
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_DESCRIPTOR_INTERFACE); // bDescriptorType = Audio Interfaces
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_AC_IFACE_SUBTYPE_HEADER); // bDescriptorSubtype = Header
- APP_USBD_CLASS_DESCRIPTOR_WRITE(LSB_16(0x0100)); // bcdADC LSB
- APP_USBD_CLASS_DESCRIPTOR_WRITE(MSB_16(0x0100)); // bcdADC MSB
- static uint16_t header_desc_len = 0;
- header_desc_len = 9 + audio_get_feature_descriptor_size(p_inst) +
- audio_get_input_descriptor_size(p_inst) + audio_get_output_descriptor_size(
- p_inst);
- APP_USBD_CLASS_DESCRIPTOR_WRITE(LSB_16(header_desc_len)); // wTotalLength LSB
- APP_USBD_CLASS_DESCRIPTOR_WRITE(MSB_16(header_desc_len)); // wTotalLength MSB
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x01); // bInCollection
- APP_USBD_CLASS_DESCRIPTOR_WRITE(audio_get_control_interface_number(p_inst) + 1); // baInterfaceNr(1)
- /* INPUT TERMINAL DESCRIPTOR */
- static uint32_t cur_byte = 0;
- static size_t input_desc_size = 0;
- input_desc_size = audio_get_input_descriptor_size(p_inst);
- for (cur_byte = 0; cur_byte < input_desc_size; cur_byte++)
- {
- APP_USBD_CLASS_DESCRIPTOR_WRITE(audio_get_input_descriptor_data(p_inst, cur_byte));
- }
- /* FEATURE UNIT DESCRIPTOR */
- static size_t feature_desc_size = 0;
- feature_desc_size = audio_get_feature_descriptor_size(p_inst);
- for (cur_byte = 0; cur_byte < feature_desc_size; cur_byte++)
- {
- APP_USBD_CLASS_DESCRIPTOR_WRITE(audio_get_feature_descriptor_data(p_inst, cur_byte));
- }
- /* OUTPUT TERMINAL DESCRIPTOR */
- static size_t output_desc_size = 0;
- output_desc_size = audio_get_output_descriptor_size(p_inst);
- for (cur_byte = 0; cur_byte < output_desc_size; cur_byte++)
- {
- APP_USBD_CLASS_DESCRIPTOR_WRITE(audio_get_output_descriptor_data(p_inst, cur_byte));
- }
- p_cur_iface++;
- /* STREAM INTERFACE DESCRIPTOR ALT 0 */
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x09); // bLength
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_DESCRIPTOR_INTERFACE); // bDescriptorType = Interface
- APP_USBD_CLASS_DESCRIPTOR_WRITE(audio_get_control_interface_number(p_inst) + 1); // bInterfaceNumber
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // bAlternateSetting
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // bNumEndpoints
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_CLASS); // bInterfaceClass = Audio
- APP_USBD_CLASS_DESCRIPTOR_WRITE(p_audio->specific.inst.type_streaming); // bInterfaceSubclass (Audio Control)
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_CLASS_PROTOCOL_UNDEFINED); // bInterfaceProtocol
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // iInterface
- /* STREAM INTERFACE DESCRIPTOR ALT 1 */
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x09); // bLength
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_DESCRIPTOR_INTERFACE); // bDescriptorType = Interface
- APP_USBD_CLASS_DESCRIPTOR_WRITE(audio_get_control_interface_number(p_inst) + 1); // bInterfaceNumber
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x01); // bAlternateSetting
- APP_USBD_CLASS_DESCRIPTOR_WRITE(app_usbd_class_iface_ep_count_get(p_cur_iface)); // bNumEndpoints
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_CLASS); // bInterfaceClass = Audio
- APP_USBD_CLASS_DESCRIPTOR_WRITE(p_audio->specific.inst.type_streaming); // bInterfaceSubclass (Audio Control)
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_CLASS_PROTOCOL_UNDEFINED); // bInterfaceProtocol
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // iInterface
- /* AudioStreaming GENERAL DESCRIPTOR */
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x07); // bLength
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_DESCRIPTOR_INTERFACE); // bDescriptorType = Audio Interface
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_AS_IFACE_SUBTYPE_GENERAL); // bDescriptorSubtype = General
- APP_USBD_CLASS_DESCRIPTOR_WRITE(p_audio->specific.inst.terminal_link); // bTerminalLink
- APP_USBD_CLASS_DESCRIPTOR_WRITE(p_audio->specific.inst.delay); // bDelay
- APP_USBD_CLASS_DESCRIPTOR_WRITE(LSB_16(p_audio->specific.inst.format)); // wFormatTag LSB
- APP_USBD_CLASS_DESCRIPTOR_WRITE(MSB_16(p_audio->specific.inst.format)); // wFormatTag MSB
- /* FORMAT DESCRIPTOR */
- static size_t format_desc_size = 0;
- format_desc_size = audio_get_format_descriptor_size(p_inst);
- for (cur_byte = 0; cur_byte < format_desc_size; cur_byte++)
- {
- APP_USBD_CLASS_DESCRIPTOR_WRITE(audio_get_format_descriptor_data(p_inst, cur_byte));
- }
- /* ENDPOINT GENERAL DESCRIPTOR */
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x07); // bLength
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_DESCRIPTOR_ENDPOINT); // bDescriptorType = Audio Descriptor
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_AUDIO_EP_SUBTYPE_GENERAL); // bDescriptorSubtype = EP General
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // bmAttributes
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // bLockDelayUnits
- APP_USBD_CLASS_DESCRIPTOR_WRITE(LSB_16(0x0000)); // wLockDelay LSB
- APP_USBD_CLASS_DESCRIPTOR_WRITE(MSB_16(0x0000)); // wLockDelay MSB
- /* ENDPOINT ISO DESCRIPTOR */
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x09); // bLength
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_DESCRIPTOR_ENDPOINT); // bDescriptorType = Endpoint
- static app_usbd_class_ep_conf_t const * p_cur_ep = NULL;
- p_cur_ep = app_usbd_class_iface_ep_get(p_cur_iface, 0);
- APP_USBD_CLASS_DESCRIPTOR_WRITE(app_usbd_class_ep_address_get(p_cur_ep)); // bEndpointAddress
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_DESCRIPTOR_EP_ATTR_TYPE_ISOCHRONOUS); // bmAttributes
- APP_USBD_CLASS_DESCRIPTOR_WRITE(LSB_16(p_audio->specific.inst.ep_size)); // wMaxPacketSize LSB
- APP_USBD_CLASS_DESCRIPTOR_WRITE(MSB_16(p_audio->specific.inst.ep_size)); // wMaxPacketSize MSB
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x01); // bInterval
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // bRefresh
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // bSynchAddress
- APP_USBD_CLASS_DESCRIPTOR_END();
- }
- /** @} */
- const app_usbd_class_methods_t app_usbd_audio_class_methods = {
- .event_handler = audio_event_handler,
- .feed_descriptors = audio_feed_descriptors,
- .iface_select = iface_select,
- .iface_deselect = iface_deselect,
- .iface_selection_get = iface_selection_get,
- };
- size_t app_usbd_audio_class_rx_size_get(app_usbd_class_inst_t const * p_inst)
- {
- nrf_drv_usbd_ep_t ep_addr;
- ep_addr = ep_iso_addr_get(p_inst);
- ASSERT(NRF_USBD_EPISO_CHECK(ep_addr));
- return (size_t)nrf_drv_usbd_epout_size_get(ep_addr);
- }
- ret_code_t app_usbd_audio_class_rx_start(
- app_usbd_class_inst_t const * p_inst,
- void * p_buff,
- size_t size)
- {
- nrf_drv_usbd_ep_t ep_addr;
- ep_addr = ep_iso_addr_get(p_inst);
- ASSERT(NRF_USBD_EPISO_CHECK(ep_addr));
- NRF_DRV_USBD_TRANSFER_OUT(transfer, p_buff, size);
- return app_usbd_ep_transfer(ep_addr, &transfer);
- }
- ret_code_t app_usbd_audio_class_tx_start(
- app_usbd_class_inst_t const * p_inst,
- const void * p_buff,
- size_t size)
- {
- nrf_drv_usbd_ep_t ep_addr;
- ep_addr = ep_iso_addr_get(p_inst);
- ASSERT(NRF_USBD_EPISO_CHECK(ep_addr));
- NRF_DRV_USBD_TRANSFER_IN(transfer, p_buff, size);
- return app_usbd_ep_transfer(ep_addr, &transfer);
- }
- ret_code_t app_usbd_audio_sof_interrupt_register(app_usbd_class_inst_t const * p_inst,
- app_usbd_sof_interrupt_handler_t handler)
- {
- app_usbd_audio_t const * p_audio = audio_get(p_inst);
- app_usbd_audio_ctx_t * p_audio_ctx = audio_ctx_get(p_audio);
- p_audio_ctx->sof_handler = handler;
- return NRF_SUCCESS;
- }
- #endif //NRF_MODULE_ENABLED(APP_USBD_AUDIO)
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