292 lines
11 KiB
C
292 lines
11 KiB
C
/**
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* Copyright (c) 2017 - 2020, Nordic Semiconductor ASA
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form, except as embedded into a Nordic
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* Semiconductor ASA integrated circuit in a product or a software update for
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* such product, must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef APP_USBD_AUDIO_INTERNAL_H__
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#define APP_USBD_AUDIO_INTERNAL_H__
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @defgroup app_usbd_audio_internal USB Audio internals
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* @brief @tagAPI52840 USB Audio class internals.
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* @ingroup app_usbd_audio
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* @{
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*/
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/**
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* @brief Forward declaration of type defined by @ref APP_USBD_CLASS_TYPEDEF in audio class.
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*
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*/
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APP_USBD_CLASS_FORWARD(app_usbd_audio);
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/*lint -save -e165*/
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/**
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* @brief Forward declaration of @ref app_usbd_audio_user_event_e
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*
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*/
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enum app_usbd_audio_user_event_e;
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/*lint -restore*/
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/**
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* @brief User event handler.
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*
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* @param[in] p_inst Class instance.
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* @param[in] event User event.
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*
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*/
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typedef void (*app_usbd_audio_user_ev_handler_t)(app_usbd_class_inst_t const * p_inst,
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enum app_usbd_audio_user_event_e event);
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/**
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* @brief Audio subclass descriptor.
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*/
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typedef struct {
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size_t size;
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uint8_t type;
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uint8_t const * const p_data;
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} app_usbd_audio_subclass_desc_t;
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/**
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* @brief Audio class part of class instance data.
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*/
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typedef struct {
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app_usbd_audio_subclass_desc_t const * const p_format_dsc; //!< Audio class Format descriptor
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app_usbd_audio_subclass_desc_t const * const p_input_dsc; //!< Audio class Input Terminal descriptor
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app_usbd_audio_subclass_desc_t const * const p_output_dsc; //!< Audio class Output Terminal descriptor
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app_usbd_audio_subclass_desc_t const * const p_feature_dsc; //!< Audio class Feature Unit descriptor
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uint8_t delay; //!< Streaming delay
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uint16_t format; //!< FormatTag (@ref app_usbd_audio_as_iface_format_tag_t)
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uint16_t ep_size; //!< Endpoint size
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uint8_t terminal_link; //!< Terminal link in AS Interface Descriptor
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app_usbd_audio_subclass_t type_streaming; //!< Streaming type MIDISTREAMING/AUDIOSTREAMING (@ref app_usbd_audio_subclass_t)
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app_usbd_audio_user_ev_handler_t user_ev_handler; //!< User event handler
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} app_usbd_audio_inst_t;
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/**
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* @brief Audio class request target.
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*/
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typedef enum {
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APP_USBD_AUDIO_CLASS_REQ_IN, /**< Audio class request IN */
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APP_USBD_AUDIO_CLASS_REQ_OUT, /**< Audio class request OUT */
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APP_USBD_AUDIO_EP_REQ_IN, /**< Audio class endpoint request IN */
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APP_USBD_AUDIO_EP_REQ_OUT, /**< Audio class endpoint request OUT */
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} app_usbd_audio_class_req_target_t;
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/**
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* @brief Audio class specific request handled via control endpoint.
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*/
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typedef struct {
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app_usbd_audio_class_req_target_t req_target; //!< Request target
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app_usbd_audio_req_type_t req_type; //!< Request type
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uint8_t control; //!< Request control field
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uint8_t channel; //!< Channel ID
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uint8_t interface; //!< Interface ID
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uint8_t entity; //!< Entity ID
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uint16_t length; //!< Request payload length
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uint8_t payload[64]; //!< Request payload
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} app_usbd_audio_req_t;
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/**
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* @brief Audio class context.
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*
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*/
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typedef struct {
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app_usbd_audio_req_t request; //!< Audio class request
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bool streaming; //!< Streaming flag
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app_usbd_sof_interrupt_handler_t sof_handler; //!< SOF event handler
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} app_usbd_audio_ctx_t;
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/**
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* @brief Audio class configuration macro.
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*
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* Used by @ref APP_USBD_AUDIO_GLOBAL_DEF
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*
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* @param iface_control Interface number of audio control.
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* @param iface_stream Interface number of audio stream.
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*/
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#define APP_USBD_AUDIO_CONFIG(iface_control, iface_stream) \
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((iface_control), \
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(iface_stream, 0))
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/**
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* @brief Only IN audio stream configuration.
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*
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* @param iface_control Interface number of audio control.
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* @param iface_stream_in Interface number of audio stream on IN endpoint.
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*/
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#define APP_USBD_AUDIO_CONFIG_IN(iface_control, iface_stream_in) \
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((iface_control), (iface_stream_in, NRF_DRV_USBD_EPIN8))
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/**
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* @brief Only OUT audio stream configuration.
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*
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* @param iface_control Interface number of audio control.
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* @param iface_stream_out Interface number of audio stream on OUT endpoint.
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*/
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#define APP_USBD_AUDIO_CONFIG_OUT(iface_control, iface_stream_out) \
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((iface_control), (iface_stream_out, NRF_DRV_USBD_EPOUT8))
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/**
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* @brief Specific class constant data for audio class.
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*
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* @ref app_usbd_audio_inst_t
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*/
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#define APP_USBD_AUDIO_INSTANCE_SPECIFIC_DEC app_usbd_audio_inst_t inst;
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/**
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* @brief Configures audio class instance.
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*
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* @param user_event_handler User event handler.
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* @param format_descriptor Audio class Format descriptor.
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* @param input_descriptor Audio class Input Terminal descriptor.
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* @param output_descriptor Audio class Output Terminal descriptor.
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* @param feature_descriptor Audio class Feature Unit descriptor.
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* @param dlay Streaming delay.
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* @param frmat FormatTag (@ref app_usbd_audio_as_iface_format_tag_t).
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* @param ep_siz Endpoint size.
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* @param type_str Streaming type MIDISTREAMING/AUDIOSTREAMING.
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* @param terminal Terminal link in AS Interface Descriptor.
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*/
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#define APP_USBD_AUDIO_INST_CONFIG(user_event_handler, \
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format_descriptor, \
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input_descriptor, \
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output_descriptor, \
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feature_descriptor, \
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dlay, \
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frmat, \
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ep_siz, \
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type_str, \
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terminal) \
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.inst = { \
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.user_ev_handler = user_event_handler, \
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.p_format_dsc = format_descriptor, \
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.p_input_dsc = input_descriptor, \
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.p_output_dsc = output_descriptor, \
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.p_feature_dsc = feature_descriptor, \
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.delay = dlay, \
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.format = frmat, \
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.ep_size = ep_siz, \
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.type_streaming = type_str, \
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.terminal_link = terminal \
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}
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/**
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* @brief Specific class data for audio class.
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*
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* @ref app_usbd_audio_ctx_t
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*/
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#define APP_USBD_AUDIO_DATA_SPECIFIC_DEC app_usbd_audio_ctx_t ctx;
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/**
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* @brief Audio class descriptors config macro.
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*
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* @param interface_number Interface number.
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* @param ... Extracted endpoint list.
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*/
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#define APP_USBD_AUDIO_DSC_CONFIG(interface_number, ...) { \
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APP_USBD_AUDIO_INTERFACE_DSC(interface_number, \
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0, \
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0, \
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APP_USBD_AUDIO_SUBCLASS_AUDIOCONTROL) \
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}
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/**
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* @brief Public audio class interface.
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*
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*/
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extern const app_usbd_class_methods_t app_usbd_audio_class_methods;
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/**
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* @brief Global definition of @ref app_usbd_audio_t class
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*
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*/
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#define APP_USBD_AUDIO_GLOBAL_DEF_INTERNAL(instance_name, \
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interfaces_configs, \
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user_ev_handler, \
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format_descriptor, \
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input_descriptor, \
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output_descriptor, \
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feature_descriptor, \
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delay, \
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format, \
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ep_size, \
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type_str, \
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terminal_link) \
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APP_USBD_CLASS_INST_GLOBAL_DEF( \
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instance_name, \
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app_usbd_audio, \
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&app_usbd_audio_class_methods, \
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interfaces_configs, \
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(APP_USBD_AUDIO_INST_CONFIG(user_ev_handler, \
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format_descriptor, \
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input_descriptor, \
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output_descriptor, \
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feature_descriptor, \
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delay, \
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format, \
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ep_size, \
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type_str, \
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terminal_link)) \
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)
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/** @} */
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#ifdef __cplusplus
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}
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#endif
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#endif /* APP_USBD_AUDIO_INTERNAL_H__ */
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