582 lines
16 KiB
C
582 lines
16 KiB
C
/*
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* Copyright (c) 2006-2023, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2019-09-07 flybreak the first version
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*/
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#include <rthw.h>
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#include <rtdevice.h>
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#include "drivers/usb_device.h"
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#include "uaudioreg.h"
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#define DBG_TAG "usbd.audio.mic"
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#define DBG_LVL DBG_INFO
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#include <rtdbg.h>
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#define RECORD_SAMPLERATE 16000
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#define RECORD_CHANNEL 1
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#define RESOLUTION_BITS 16
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#define RESOLUTION_BYTE (RESOLUTION_BITS / 8)
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#define RECORD_PER_MS_SZ ((RECORD_SAMPLERATE * RECORD_CHANNEL * RESOLUTION_BYTE) / 1000)
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#define RECORD_BUFFER_SZ (RECORD_PER_MS_SZ * 20) /* 20ms */
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#if defined(RT_USBD_MIC_DEVICE_NAME)
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#define MIC_DEVICE_NAME RT_USBD_MIC_DEVICE_NAME
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#else
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#define MIC_DEVICE_NAME "mic0"
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#endif
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#define EVENT_RECORD_START (1 << 0)
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#define EVENT_RECORD_STOP (1 << 1)
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#define EVENT_RECORD_DATA (1 << 2)
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#define MIC_INTF_STR_INDEX 8
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/*
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* uac mic descriptor define
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*/
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#define UAC_CS_INTERFACE 0x24
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#define UAC_CS_ENDPOINT 0x25
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#define UAC_MAX_PACKET_SIZE 64
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#define UAC_EP_MAX_PACKET_SIZE 32
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#define UAC_CHANNEL_NUM RECORD_CHANNEL
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struct uac_ac_descriptor
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{
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#ifdef RT_USB_DEVICE_COMPOSITE
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struct uiad_descriptor iad_desc;
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#endif
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struct uinterface_descriptor intf_desc;
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struct usb_audio_control_descriptor hdr_desc;
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struct usb_audio_input_terminal it_desc;
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struct usb_audio_output_terminal ot_desc;
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#if UAC_USE_FEATURE_UNIT
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struct usb_audio_feature_unit feature_unit_desc;
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#endif
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};
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struct uac_as_descriptor
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{
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struct uinterface_descriptor intf_desc;
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struct usb_audio_streaming_interface_descriptor hdr_desc;
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struct usb_audio_streaming_type1_descriptor format_type_desc;
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struct uendpoint_descriptor ep_desc;
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struct usb_audio_streaming_endpoint_descriptor as_ep_desc;
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};
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/*
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* uac mic device type
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*/
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struct uac_audio_mic
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{
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rt_device_t dev;
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rt_event_t event;
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rt_uint8_t open_count;
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rt_uint8_t *buffer;
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rt_uint32_t buffer_index;
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uep_t ep;
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};
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static struct uac_audio_mic mic;
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rt_align(4)
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static struct udevice_descriptor dev_desc =
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{
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USB_DESC_LENGTH_DEVICE, //bLength;
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USB_DESC_TYPE_DEVICE, //type;
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USB_BCD_VERSION, //bcdUSB;
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USB_CLASS_DEVICE, //bDeviceClass;
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0x00, //bDeviceSubClass;
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0x00, //bDeviceProtocol;
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UAC_MAX_PACKET_SIZE, //bMaxPacketSize0;
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_VENDOR_ID, //idVendor;
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_PRODUCT_ID, //idProduct;
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USB_BCD_DEVICE, //bcdDevice;
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USB_STRING_MANU_INDEX, //iManufacturer;
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USB_STRING_PRODUCT_INDEX, //iProduct;
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USB_STRING_SERIAL_INDEX, //iSerialNumber;Unused.
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USB_DYNAMIC, //bNumConfigurations;
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};
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//FS and HS needed
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rt_align(4)
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static struct usb_qualifier_descriptor dev_qualifier =
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{
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sizeof(dev_qualifier), //bLength
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USB_DESC_TYPE_DEVICEQUALIFIER, //bDescriptorType
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0x0200, //bcdUSB
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USB_CLASS_AUDIO, //bDeviceClass
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0x00, //bDeviceSubClass
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0x00, //bDeviceProtocol
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64, //bMaxPacketSize0
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0x01, //bNumConfigurations
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0,
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};
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rt_align(4)
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const static char *_ustring[] =
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{
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"Language",
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"RT-Thread Team.",
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"RT-Thread Audio Microphone",
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"32021919830108",
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"Configuration",
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"Interface",
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};
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rt_align(4)
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static struct uac_ac_descriptor ac_desc =
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{
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#ifdef RT_USB_DEVICE_COMPOSITE
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/* Interface Association Descriptor */
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{
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USB_DESC_LENGTH_IAD,
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USB_DESC_TYPE_IAD,
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USB_DYNAMIC,
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0x02,
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USB_CLASS_AUDIO,
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USB_SUBCLASS_AUDIOSTREAMING,
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0x00,
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0x00,
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},
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#endif
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/* Interface Descriptor */
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{
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USB_DESC_LENGTH_INTERFACE,
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USB_DESC_TYPE_INTERFACE,
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USB_DYNAMIC,
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0x00,
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0x00,
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USB_CLASS_AUDIO,
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USB_SUBCLASS_AUDIOCONTROL,
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0x00,
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#ifdef RT_USB_DEVICE_COMPOSITE
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MIC_INTF_STR_INDEX,
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#else
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0x00,
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#endif
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},
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/* Header Descriptor */
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{
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sizeof(struct usb_audio_control_descriptor),
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UAC_CS_INTERFACE,
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UDESCSUB_AC_HEADER,
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0x0100, /* Version: 1.00 */
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0x001E, /* Total length: 30 */
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0x01, /* Total number of interfaces: 1 */
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{0x01}, /* Interface number: 1 */
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},
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/* Input Terminal Descriptor */
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{
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sizeof(struct usb_audio_input_terminal),
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UAC_CS_INTERFACE,
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UDESCSUB_AC_INPUT,
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0x01, /* Terminal ID: 1 */
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0x0201, /* Terminal Type: Microphone (0x0201) */
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0x00, /* Assoc Terminal: 0 */
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0x01, /* Number Channels: 1 */
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0x0000, /* Channel Config: 0x0000 */
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0x00, /* Channel Names: 0 */
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0x00, /* Terminal: 0 */
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},
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/* Output Terminal Descriptor */
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{
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sizeof(struct usb_audio_output_terminal),
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UAC_CS_INTERFACE,
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UDESCSUB_AC_OUTPUT,
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0x02, /* Terminal ID: 2 */
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0x0101, /* Terminal Type: USB Streaming (0x0101) */
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0x00, /* Assoc Terminal: 0 */
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0x01, /* Source ID: 1 */
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0x00, /* Terminal: 0 */
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},
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#if UAC_USE_FEATURE_UNIT
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/* Feature unit Descriptor */
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{
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sizeof(struct usb_audio_feature_unit),
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UAC_CS_INTERFACE,
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UDESCSUB_AC_FEATURE,
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0x02,
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0x01,
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0x01,
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0x00,
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0x01,
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},
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#endif
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};
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rt_align(4)
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static struct uinterface_descriptor as_desc0 =
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{
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USB_DESC_LENGTH_INTERFACE,
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USB_DESC_TYPE_INTERFACE,
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USB_DYNAMIC,
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0x00,
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0x00,
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USB_CLASS_AUDIO,
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USB_SUBCLASS_AUDIOSTREAMING,
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0x00,
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0x00,
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};
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rt_align(4)
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static struct uac_as_descriptor as_desc =
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{
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/* Interface Descriptor */
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{
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USB_DESC_LENGTH_INTERFACE,
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USB_DESC_TYPE_INTERFACE,
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USB_DYNAMIC,
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0x01,
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0x01,
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USB_CLASS_AUDIO,
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USB_SUBCLASS_AUDIOSTREAMING,
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0x00,
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0x00,
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},
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/* General AS Descriptor */
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{
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sizeof(struct usb_audio_streaming_interface_descriptor),
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UAC_CS_INTERFACE,
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AS_GENERAL,
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0x02, /* Terminal ID: 2 */
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0x01, /* Interface delay in frames: 1 */
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UA_FMT_PCM,
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},
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/* Format type i Descriptor */
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{
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sizeof(struct usb_audio_streaming_type1_descriptor),
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UAC_CS_INTERFACE,
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FORMAT_TYPE,
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FORMAT_TYPE_I,
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UAC_CHANNEL_NUM,
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2, /* Subframe Size: 2 */
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RESOLUTION_BITS,
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0x01, /* Samples Frequence Type: 1 */
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{0}, /* Samples Frequence */
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},
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/* Endpoint Descriptor */
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{
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USB_DESC_LENGTH_ENDPOINT,
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USB_DESC_TYPE_ENDPOINT,
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USB_DYNAMIC | USB_DIR_IN,
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USB_EP_ATTR_ISOC,
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UAC_EP_MAX_PACKET_SIZE,
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0x01,
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},
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/* AS Endpoint Descriptor */
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{
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sizeof(struct usb_audio_streaming_endpoint_descriptor),
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UAC_CS_ENDPOINT,
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AS_GENERAL,
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},
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};
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void mic_entry(void *parameter)
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{
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struct rt_audio_caps caps = {0};
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rt_uint32_t e, index;
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mic.buffer = rt_malloc(RECORD_BUFFER_SZ);
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if (mic.buffer == RT_NULL)
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{
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LOG_E("malloc failed");
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goto __exit;
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}
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mic.dev = rt_device_find(MIC_DEVICE_NAME);
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if (mic.dev == RT_NULL)
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{
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LOG_E("can't find device:%s", MIC_DEVICE_NAME);
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goto __exit;
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}
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while (1)
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{
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if (rt_event_recv(mic.event, EVENT_RECORD_START | EVENT_RECORD_STOP,
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RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR,
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1000, &e) != RT_EOK)
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{
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continue;
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}
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if (mic.open_count == 0)
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{
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continue;
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}
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LOG_D("record start");
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rt_device_open(mic.dev, RT_DEVICE_OFLAG_RDONLY);
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caps.main_type = AUDIO_TYPE_INPUT;
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caps.sub_type = AUDIO_DSP_PARAM;
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caps.udata.config.samplerate = RECORD_SAMPLERATE;
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caps.udata.config.channels = RECORD_CHANNEL;
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caps.udata.config.samplebits = RESOLUTION_BITS;
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rt_device_control(mic.dev, AUDIO_CTL_CONFIGURE, &caps);
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while (1)
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{
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if (rt_event_recv(mic.event, EVENT_RECORD_DATA | EVENT_RECORD_STOP,
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RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR,
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1000, &e) != RT_EOK)
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{
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if (mic.open_count > 0)
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continue;
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else
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break;
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}
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if (e & EVENT_RECORD_DATA)
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{
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index = (mic.buffer_index >= RECORD_BUFFER_SZ / 2) ? 0 : (RECORD_BUFFER_SZ / 2);
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rt_device_read(mic.dev, 0, mic.buffer + index, RECORD_BUFFER_SZ / 2);
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}
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else if (e & EVENT_RECORD_STOP)
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{
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break;
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}
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}
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LOG_D("record stop");
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rt_device_close(mic.dev);
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}
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__exit:
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if (mic.buffer)
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rt_free(mic.buffer);
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}
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static rt_err_t _record_start(ufunction_t func)
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{
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mic.ep->request.buffer = RT_NULL;
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mic.ep->request.size = UAC_EP_MAX_PACKET_SIZE;
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mic.ep->request.req_type = UIO_REQUEST_WRITE;
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rt_usbd_io_request(func->device, mic.ep, &mic.ep->request);
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mic.open_count ++;
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rt_event_send(mic.event, EVENT_RECORD_START);
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return 0;
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}
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static rt_err_t _record_stop(ufunction_t func)
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{
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mic.open_count --;
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rt_event_send(mic.event, EVENT_RECORD_STOP);
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return 0;
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}
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static rt_err_t _ep_data_in_handler(ufunction_t func, rt_size_t size)
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{
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RT_ASSERT(func != RT_NULL);
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LOG_D("_ep_data_in_handler");
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mic.ep->request.buffer = mic.buffer + mic.buffer_index;
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mic.ep->request.size = UAC_EP_MAX_PACKET_SIZE;
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mic.ep->request.req_type = UIO_REQUEST_WRITE;
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rt_usbd_io_request(func->device, mic.ep, &mic.ep->request);
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mic.buffer_index += UAC_EP_MAX_PACKET_SIZE;
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if (mic.buffer_index >= RECORD_BUFFER_SZ)
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{
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mic.buffer_index = 0;
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rt_event_send(mic.event, EVENT_RECORD_DATA);
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}
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else if (mic.buffer_index == RECORD_BUFFER_SZ / 2)
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{
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rt_event_send(mic.event, EVENT_RECORD_DATA);
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}
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return RT_EOK;
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}
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static rt_err_t _interface_as_handler(ufunction_t func, ureq_t setup)
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{
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RT_ASSERT(func != RT_NULL);
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RT_ASSERT(func->device != RT_NULL);
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RT_ASSERT(setup != RT_NULL);
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LOG_D("_interface_as_handler");
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if ((setup->request_type & USB_REQ_TYPE_MASK) == USB_REQ_TYPE_STANDARD)
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{
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switch (setup->bRequest)
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{
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case USB_REQ_GET_INTERFACE:
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break;
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case USB_REQ_SET_INTERFACE:
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LOG_D("set interface handler");
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if (setup->wValue == 1)
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{
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_record_start(func);
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}
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else if (setup->wValue == 0)
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{
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_record_stop(func);
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}
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break;
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default:
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LOG_D("unknown uac request 0x%x", setup->bRequest);
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return -RT_ERROR;
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}
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}
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return RT_EOK;
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}
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static rt_err_t _function_enable(ufunction_t func)
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{
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RT_ASSERT(func != RT_NULL);
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LOG_D("uac function enable");
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return RT_EOK;
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}
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static rt_err_t _function_disable(ufunction_t func)
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{
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RT_ASSERT(func != RT_NULL);
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LOG_D("uac function disable");
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_record_stop(func);
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return RT_EOK;
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}
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static struct ufunction_ops ops =
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{
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_function_enable,
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_function_disable,
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RT_NULL,
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};
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/**
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* This function will configure uac descriptor.
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*
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* @param comm the communication interface number.
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* @param data the data interface number.
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*
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* @return RT_EOK on successful.
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*/
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static rt_err_t _uac_descriptor_config(struct uac_ac_descriptor *ac,
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rt_uint8_t cintf_nr, struct uac_as_descriptor *as, rt_uint8_t sintf_nr)
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{
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ac->hdr_desc.baInterfaceNr[0] = sintf_nr;
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#ifdef RT_USB_DEVICE_COMPOSITE
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ac->iad_desc.bFirstInterface = cintf_nr;
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#endif
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return RT_EOK;
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}
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static rt_err_t _uac_samplerate_config(struct uac_as_descriptor *as, rt_uint32_t samplerate)
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{
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as->format_type_desc.tSamFreq[0 * 3 + 2] = samplerate >> 16 & 0xff;
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as->format_type_desc.tSamFreq[0 * 3 + 1] = samplerate >> 8 & 0xff;
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as->format_type_desc.tSamFreq[0 * 3 + 0] = samplerate & 0xff;
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return RT_EOK;
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}
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|
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/**
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* This function will create a uac function instance.
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*
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* @param device the usb device object.
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*
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* @return RT_EOK on successful.
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*/
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ufunction_t rt_usbd_function_uac_mic_create(udevice_t device)
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{
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ufunction_t func;
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uintf_t intf_ac, intf_as;
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ualtsetting_t setting_as0;
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ualtsetting_t setting_ac, setting_as;
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struct uac_as_descriptor *as_desc_t;
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/* parameter check */
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RT_ASSERT(device != RT_NULL);
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#ifdef RT_USB_DEVICE_COMPOSITE
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rt_usbd_device_set_interface_string(device, MIC_INTF_STR_INDEX, _ustring[2]);
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#else
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/* set usb device string description */
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rt_usbd_device_set_string(device, _ustring);
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#endif
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/* create a uac function */
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func = rt_usbd_function_new(device, &dev_desc, &ops);
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//not support HS
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//rt_usbd_device_set_qualifier(device, &dev_qualifier);
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/* create interface */
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intf_ac = rt_usbd_interface_new(device, RT_NULL);
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intf_as = rt_usbd_interface_new(device, _interface_as_handler);
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/* create alternate setting */
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setting_ac = rt_usbd_altsetting_new(sizeof(struct uac_ac_descriptor));
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setting_as0 = rt_usbd_altsetting_new(sizeof(struct uinterface_descriptor));
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setting_as = rt_usbd_altsetting_new(sizeof(struct uac_as_descriptor));
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/* config desc in alternate setting */
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rt_usbd_altsetting_config_descriptor(setting_ac, &ac_desc,
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(rt_off_t) & ((struct uac_ac_descriptor *)0)->intf_desc);
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rt_usbd_altsetting_config_descriptor(setting_as0, &as_desc0, 0);
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rt_usbd_altsetting_config_descriptor(setting_as, &as_desc,
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(rt_off_t) & ((struct uac_as_descriptor *)0)->intf_desc);
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/* configure the uac interface descriptor */
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_uac_descriptor_config(setting_ac->desc, intf_ac->intf_num, setting_as->desc, intf_as->intf_num);
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|
_uac_samplerate_config(setting_as->desc, RECORD_SAMPLERATE);
|
|
|
|
/* create endpoint */
|
|
as_desc_t = (struct uac_as_descriptor *)setting_as->desc;
|
|
mic.ep = rt_usbd_endpoint_new(&as_desc_t->ep_desc, _ep_data_in_handler);
|
|
|
|
/* add the endpoint to the alternate setting */
|
|
rt_usbd_altsetting_add_endpoint(setting_as, mic.ep);
|
|
|
|
/* add the alternate setting to the interface, then set default setting of the interface */
|
|
rt_usbd_interface_add_altsetting(intf_ac, setting_ac);
|
|
rt_usbd_set_altsetting(intf_ac, 0);
|
|
rt_usbd_interface_add_altsetting(intf_as, setting_as0);
|
|
rt_usbd_interface_add_altsetting(intf_as, setting_as);
|
|
rt_usbd_set_altsetting(intf_as, 0);
|
|
|
|
/* add the interface to the uac function */
|
|
rt_usbd_function_add_interface(func, intf_ac);
|
|
rt_usbd_function_add_interface(func, intf_as);
|
|
|
|
return func;
|
|
}
|
|
|
|
int audio_mic_init(void)
|
|
{
|
|
rt_thread_t mic_tid;
|
|
mic.event = rt_event_create("mic_event", RT_IPC_FLAG_FIFO);
|
|
|
|
mic_tid = rt_thread_create("mic_thread",
|
|
mic_entry, RT_NULL,
|
|
1024,
|
|
5, 10);
|
|
|
|
if (mic_tid != RT_NULL)
|
|
rt_thread_startup(mic_tid);
|
|
return RT_EOK;
|
|
}
|
|
INIT_COMPONENT_EXPORT(audio_mic_init);
|
|
|
|
/*
|
|
* register uac class
|
|
*/
|
|
struct udclass uac_class =
|
|
{
|
|
.rt_usbd_function_create = rt_usbd_function_uac_mic_create
|
|
};
|
|
|
|
int rt_usbd_uac_mic_class_register(void)
|
|
{
|
|
rt_usbd_class_register(&uac_class);
|
|
return 0;
|
|
}
|
|
INIT_PREV_EXPORT(rt_usbd_uac_mic_class_register);
|