694 lines
18 KiB
C
694 lines
18 KiB
C
/*
|
||
* Copyright (c) 2006-2023, RT-Thread Development Team
|
||
*
|
||
* SPDX-License-Identifier: Apache-2.0
|
||
*
|
||
* Change Logs:
|
||
* Date Author Notes
|
||
* 2019-09-19 flybreak the first version
|
||
*/
|
||
|
||
//#include <rthw.h>
|
||
#include <rtthread.h>
|
||
#include "include/usb_device.h"
|
||
|
||
#ifdef RT_USB_DEVICE_AUDIO_SPEAKER
|
||
|
||
|
||
#include "stream_frame.h"
|
||
#include "jpgdef.h"
|
||
|
||
#define AUFMT_MAX_FREQUENCIES 1
|
||
#include "uaudioreg.h"
|
||
|
||
//#define DBG_TAG "usbd.audio.speaker"
|
||
//#define DBG_LVL DBG_INFO
|
||
//#include <rtdbg.h>
|
||
|
||
#define AUDIO_SAMPLERATE 16000
|
||
#define AUDIO_CHANNEL 1
|
||
#define RESOLUTION_BITS 16
|
||
|
||
#define RESOLUTION_BYTE (RESOLUTION_BITS / 8)
|
||
#define AUDIO_PER_MS_SZ ((AUDIO_SAMPLERATE * AUDIO_CHANNEL * RESOLUTION_BYTE) / 1000)
|
||
#define AUDIO_BUFFER_SZ (AUDIO_PER_MS_SZ * 64) /* 64ms */
|
||
|
||
#if defined(RT_USBD_SPEAKER_DEVICE_NAME)
|
||
#define SPEAKER_DEVICE_NAME RT_USBD_SPEAKER_DEVICE_NAME
|
||
#else
|
||
#define SPEAKER_DEVICE_NAME "sound0"
|
||
#endif
|
||
|
||
#define EVENT_AUDIO_START (1 << 0)
|
||
#define EVENT_AUDIO_STOP (1 << 1)
|
||
#define EVENT_AUDIO_DATA (1 << 2)
|
||
|
||
#define SPK_INTF_STR_INDEX 9
|
||
/*
|
||
* uac speaker descriptor define
|
||
*/
|
||
|
||
#define UAC_CS_INTERFACE 0x24
|
||
#define UAC_CS_ENDPOINT 0x25
|
||
|
||
#define UAC_MAX_PACKET_SIZE 64
|
||
#define UAC_EP_MAX_PACKET_SIZE 32
|
||
#define UAC_CHANNEL_NUM AUDIO_CHANNEL
|
||
|
||
#define AUDIO_LEN (1024)
|
||
|
||
struct uac_ac_descriptor
|
||
{
|
||
#ifdef RT_USB_DEVICE_COMPOSITE
|
||
struct uiad_descriptor iad_desc;
|
||
#endif
|
||
struct uinterface_descriptor intf_desc;
|
||
struct usb_audio_control_descriptor hdr_desc;
|
||
struct usb_audio_input_terminal it_desc;
|
||
struct usb_audio_output_terminal ot_desc;
|
||
#if UAC_USE_FEATURE_UNIT
|
||
struct usb_audio_feature_unit feature_unit_desc;
|
||
#endif
|
||
};
|
||
|
||
struct uac_as_descriptor
|
||
{
|
||
struct uinterface_descriptor intf_desc;
|
||
struct usb_audio_streaming_interface_descriptor hdr_desc;
|
||
struct usb_audio_streaming_type1_descriptor format_type_desc;
|
||
struct uendpoint_descriptor ep_desc;
|
||
struct usb_audio_streaming_endpoint_descriptor as_ep_desc;
|
||
};
|
||
|
||
/*
|
||
* uac speaker device type
|
||
*/
|
||
|
||
struct uac_audio_speaker
|
||
{
|
||
rt_device_t dev;
|
||
rt_event_t event;
|
||
rt_uint8_t open_count;
|
||
|
||
rt_uint8_t *buffer;
|
||
rt_uint32_t buffer_index;
|
||
|
||
uep_t ep;
|
||
};
|
||
static struct uac_audio_speaker speaker;
|
||
|
||
rt_align(4)
|
||
static struct udevice_descriptor dev_desc =
|
||
{
|
||
USB_DESC_LENGTH_DEVICE, //bLength;
|
||
USB_DESC_TYPE_DEVICE, //type;
|
||
USB_BCD_VERSION, //bcdUSB;
|
||
USB_CLASS_DEVICE, //bDeviceClass;
|
||
0x00, //bDeviceSubClass;
|
||
0x00, //bDeviceProtocol;
|
||
UAC_MAX_PACKET_SIZE, //bMaxPacketSize0;
|
||
_VENDOR_ID, //idVendor;
|
||
_PRODUCT_ID, //idProduct;
|
||
USB_BCD_DEVICE, //bcdDevice;
|
||
USB_STRING_MANU_INDEX, //iManufacturer;
|
||
USB_STRING_PRODUCT_INDEX, //iProduct;
|
||
USB_STRING_SERIAL_INDEX, //iSerialNumber;Unused.
|
||
USB_DYNAMIC, //bNumConfigurations;
|
||
};
|
||
|
||
//FS and HS needed
|
||
rt_align(4)
|
||
static struct usb_qualifier_descriptor dev_qualifier =
|
||
{
|
||
sizeof(dev_qualifier), //bLength
|
||
USB_DESC_TYPE_DEVICEQUALIFIER, //bDescriptorType
|
||
0x0200, //bcdUSB
|
||
USB_CLASS_AUDIO, //bDeviceClass
|
||
0x00, //bDeviceSubClass
|
||
0x00, //bDeviceProtocol
|
||
64, //bMaxPacketSize0
|
||
0x01, //bNumConfigurations
|
||
0,
|
||
};
|
||
|
||
rt_align(4)
|
||
const static char *_ustring[] =
|
||
{
|
||
"Language",
|
||
"RT-Thread Team.",
|
||
"RT-Thread Audio Speaker",
|
||
"32021919830108",
|
||
"Configuration",
|
||
"Interface",
|
||
};
|
||
|
||
rt_align(4)
|
||
static struct uac_ac_descriptor ac_desc =
|
||
{
|
||
#ifdef RT_USB_DEVICE_COMPOSITE
|
||
/* Interface Association Descriptor */
|
||
{
|
||
USB_DESC_LENGTH_IAD,
|
||
USB_DESC_TYPE_IAD,
|
||
USB_DYNAMIC,
|
||
0x02,
|
||
USB_CLASS_AUDIO,
|
||
USB_SUBCLASS_AUDIOSTREAMING,
|
||
0x00,
|
||
0x00,
|
||
},
|
||
#endif
|
||
/* Interface Descriptor */
|
||
{
|
||
USB_DESC_LENGTH_INTERFACE,
|
||
USB_DESC_TYPE_INTERFACE,
|
||
USB_DYNAMIC,
|
||
0x00,
|
||
0x00,
|
||
USB_CLASS_AUDIO,
|
||
USB_SUBCLASS_AUDIOCONTROL,
|
||
0x00,
|
||
#ifdef RT_USB_DEVICE_COMPOSITE
|
||
SPK_INTF_STR_INDEX,
|
||
#else
|
||
0x00,
|
||
#endif
|
||
},
|
||
/* Header Descriptor */
|
||
{
|
||
sizeof(struct usb_audio_control_descriptor),
|
||
UAC_CS_INTERFACE,
|
||
UDESCSUB_AC_HEADER,
|
||
0x0100, /* Version: 1.00 */
|
||
0x0027, /* Total length: 39 */
|
||
0x01, /* Total number of interfaces: 1 */
|
||
{0x01}, /* Interface number: 1 */
|
||
},
|
||
/* Input Terminal Descriptor */
|
||
{
|
||
sizeof(struct usb_audio_input_terminal),
|
||
UAC_CS_INTERFACE,
|
||
UDESCSUB_AC_INPUT,
|
||
0x01, /* Terminal ID: 1 */
|
||
0x0101, /* Terminal Type: USB Streaming (0x0101) */
|
||
0x00, /* Assoc Terminal: 0 */
|
||
0x01, /* Number Channels: 1 */
|
||
0x0000, /* Channel Config: 0x0000 */
|
||
0x00, /* Channel Names: 0 */
|
||
0x00, /* Terminal: 0 */
|
||
},
|
||
/* Output Terminal Descriptor */
|
||
{
|
||
sizeof(struct usb_audio_output_terminal),
|
||
UAC_CS_INTERFACE,
|
||
UDESCSUB_AC_OUTPUT,
|
||
0x02, /* Terminal ID: 2 */
|
||
0x0301, /* Terminal Type */
|
||
0x00, /* Assoc Terminal: 0 */
|
||
0x01, /* Source ID: 1 */
|
||
0x00, /* Terminal: 0 */
|
||
},
|
||
#if UAC_USE_FEATURE_UNIT
|
||
/* Feature unit Descriptor */
|
||
{
|
||
sizeof(struct usb_audio_feature_unit),
|
||
UAC_CS_INTERFACE,
|
||
UDESCSUB_AC_FEATURE,
|
||
0x02,
|
||
0x01，
|
||
0x01,
|
||
0x00,
|
||
0x01,
|
||
},
|
||
#endif
|
||
};
|
||
|
||
rt_align(4)
|
||
static struct uinterface_descriptor as_desc0 =
|
||
{
|
||
USB_DESC_LENGTH_INTERFACE,
|
||
USB_DESC_TYPE_INTERFACE,
|
||
USB_DYNAMIC,
|
||
0x00,
|
||
0x00,
|
||
USB_CLASS_AUDIO,
|
||
USB_SUBCLASS_AUDIOSTREAMING,
|
||
0x00,
|
||
0x00,
|
||
};
|
||
|
||
rt_align(4)
|
||
static struct uac_as_descriptor as_desc =
|
||
{
|
||
/* Interface Descriptor */
|
||
{
|
||
USB_DESC_LENGTH_INTERFACE,
|
||
USB_DESC_TYPE_INTERFACE,
|
||
USB_DYNAMIC,
|
||
0x01,
|
||
0x01,
|
||
USB_CLASS_AUDIO,
|
||
USB_SUBCLASS_AUDIOSTREAMING,
|
||
0x00,
|
||
0x00,
|
||
},
|
||
/* General AS Descriptor */
|
||
{
|
||
sizeof(struct usb_audio_streaming_interface_descriptor),
|
||
UAC_CS_INTERFACE,
|
||
AS_GENERAL,
|
||
0x01, /* Terminal ID: 1 */
|
||
0x01, /* Interface delay in frames: 1 */
|
||
UA_FMT_PCM,
|
||
},
|
||
/* Format type i Descriptor */
|
||
{
|
||
sizeof(struct usb_audio_streaming_type1_descriptor),
|
||
UAC_CS_INTERFACE,
|
||
FORMAT_TYPE,
|
||
FORMAT_TYPE_I,
|
||
UAC_CHANNEL_NUM,
|
||
2, /* Subframe Size: 2 */
|
||
RESOLUTION_BITS,
|
||
0x01, /* Samples Frequence Type: 1 */
|
||
{0}, /* Samples Frequence */
|
||
},
|
||
/* Endpoint Descriptor */
|
||
{
|
||
USB_DESC_LENGTH_ENDPOINT,
|
||
USB_DESC_TYPE_ENDPOINT,
|
||
USB_DYNAMIC | USB_DIR_OUT,
|
||
USB_EP_ATTR_ISOC,
|
||
UAC_EP_MAX_PACKET_SIZE,
|
||
0x04, //HS:0x04 FS:0x01
|
||
},
|
||
/* AS Endpoint Descriptor */
|
||
{
|
||
sizeof(struct usb_audio_streaming_endpoint_descriptor),
|
||
UAC_CS_ENDPOINT,
|
||
AS_GENERAL,
|
||
},
|
||
};
|
||
|
||
static uint32_t get_sound_data_len(void *data)
|
||
{
|
||
struct data_structure *d = (struct data_structure *)data;
|
||
return (uint32_t)d->priv;
|
||
}
|
||
static uint32_t set_sound_data_len(void *data,uint32_t len)
|
||
{
|
||
struct data_structure *d = (struct data_structure *)data;
|
||
d->priv = (void*)len;
|
||
return len;
|
||
}
|
||
static stream_ops_func stream_sound_ops =
|
||
{
|
||
.get_data_len = get_sound_data_len,
|
||
.set_data_len = set_sound_data_len,
|
||
};
|
||
static int opcode_func(stream *s,void *priv,int opcode)
|
||
{
|
||
static uint8 *audio_buf = NULL;
|
||
int res = 0;
|
||
switch(opcode)
|
||
{
|
||
case STREAM_OPEN_ENTER:
|
||
break;
|
||
case STREAM_OPEN_EXIT:
|
||
{
|
||
audio_buf = os_malloc(8 * AUDIO_LEN);
|
||
if(audio_buf)
|
||
{
|
||
stream_data_dis_mem(s,8);
|
||
}
|
||
|
||
streamSrc_bind_streamDest(s,R_SPEAKER);
|
||
|
||
}
|
||
break;
|
||
case STREAM_OPEN_FAIL:
|
||
break;
|
||
|
||
case STREAM_FILTER_DATA:
|
||
break;
|
||
|
||
case STREAM_DATA_DIS:
|
||
{
|
||
struct data_structure *data = (struct data_structure *)priv;
|
||
int data_num = (int)data->priv;
|
||
data->ops = &stream_sound_ops;
|
||
data->data = audio_buf + (data_num)*AUDIO_LEN;
|
||
}
|
||
break;
|
||
|
||
case STREAM_DATA_FREE:
|
||
//_os_printf("%s:%d\n",__FUNCTION__,__LINE__);
|
||
break;
|
||
|
||
|
||
//数据发送完成,可以选择唤醒对应的任务
|
||
case STREAM_RECV_DATA_FINISH:
|
||
break;
|
||
|
||
default:
|
||
//默认都返回成功
|
||
break;
|
||
}
|
||
return res;
|
||
}
|
||
void speaker_entry(void *parameter)
|
||
{
|
||
|
||
struct rt_audio_caps caps = {0};
|
||
rt_uint32_t e, index;
|
||
|
||
speaker.buffer = rt_malloc(AUDIO_BUFFER_SZ);
|
||
if (speaker.buffer == RT_NULL)
|
||
{
|
||
os_printf("speaker buffer malloc failed\n");
|
||
LOG_E("malloc failed");
|
||
goto __exit;
|
||
}
|
||
|
||
stream *audio_s = NULL;
|
||
volatile int16 *realdata = NULL;
|
||
struct data_structure *data = NULL;
|
||
audio_s = open_stream_available(S_USB_MIC, 8, 0, opcode_func,NULL);
|
||
|
||
if(!audio_s)
|
||
{
|
||
_os_printf("creat audio_s stream fail\n");
|
||
goto __exit;
|
||
}
|
||
|
||
if(audio_s)
|
||
{
|
||
enable_stream(audio_s,1);
|
||
}
|
||
|
||
#if 1
|
||
|
||
while (1)
|
||
{
|
||
if (rt_event_recv(speaker.event, EVENT_AUDIO_START | EVENT_AUDIO_STOP,
|
||
RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR,
|
||
1000, &e) != RT_EOK)
|
||
{
|
||
continue;
|
||
}
|
||
|
||
|
||
if (e & EVENT_AUDIO_START)
|
||
{
|
||
|
||
}else
|
||
{
|
||
continue;
|
||
}
|
||
|
||
|
||
LOG_D("play start");
|
||
|
||
caps.udata.config.samplerate = AUDIO_SAMPLERATE;
|
||
caps.udata.config.channels = AUDIO_CHANNEL;
|
||
caps.udata.config.samplebits = RESOLUTION_BITS;
|
||
// audio_da_reinit();
|
||
while (1)
|
||
{
|
||
if (rt_event_recv(speaker.event, EVENT_AUDIO_DATA | EVENT_AUDIO_STOP,
|
||
RT_EVENT_FLAG_OR | RT_EVENT_FLAG_CLEAR,
|
||
1000, &e) != RT_EOK)
|
||
{
|
||
continue;
|
||
}
|
||
if (e & EVENT_AUDIO_DATA)
|
||
{
|
||
index = (speaker.buffer_index >= AUDIO_BUFFER_SZ / 2) ? 0 : (AUDIO_BUFFER_SZ / 2);
|
||
|
||
data = get_src_data_f(audio_s);
|
||
if(data)
|
||
{
|
||
realdata = get_stream_real_data(data);
|
||
os_memcpy(realdata, speaker.buffer + index, AUDIO_BUFFER_SZ / 2);
|
||
os_printf("s: %x %x %x %x\r\n",realdata[0],realdata[1],realdata[2],realdata[3]);
|
||
data->type = SET_DATA_TYPE(SOUND, SOUND_ALL);
|
||
set_stream_real_data_len(data,AUDIO_BUFFER_SZ / 2);
|
||
send_data_to_stream(data);
|
||
}
|
||
else
|
||
{
|
||
os_printf("get src data_f failed\n");
|
||
}
|
||
}
|
||
else if (e & EVENT_AUDIO_STOP)
|
||
{
|
||
// audio_da_deinit();
|
||
break;
|
||
}
|
||
}
|
||
LOG_D("play stop");
|
||
|
||
}
|
||
#endif
|
||
__exit:
|
||
if(audio_s)
|
||
close_stream(audio_s);
|
||
|
||
if (speaker.buffer)
|
||
rt_free(speaker.buffer);
|
||
}
|
||
|
||
static rt_err_t _audio_start(ufunction_t func)
|
||
{
|
||
speaker.ep->request.buffer = speaker.buffer;
|
||
speaker.ep->request.size = UAC_EP_MAX_PACKET_SIZE;
|
||
speaker.ep->request.req_type = UIO_REQUEST_READ_FULL;
|
||
rt_usbd_io_request(func->device, speaker.ep, &speaker.ep->request);
|
||
|
||
speaker.open_count ++;
|
||
rt_event_send(speaker.event, EVENT_AUDIO_START);
|
||
|
||
return 0;
|
||
}
|
||
|
||
static rt_err_t _audio_stop(ufunction_t func)
|
||
{
|
||
// audio_da_deinit();
|
||
speaker.open_count --;
|
||
rt_event_send(speaker.event, EVENT_AUDIO_STOP);
|
||
return 0;
|
||
}
|
||
|
||
static rt_err_t _ep_data_handler(ufunction_t func, rt_size_t size)
|
||
{
|
||
RT_ASSERT(func != RT_NULL);
|
||
LOG_D("_ep_data_handler");
|
||
|
||
speaker.ep->request.buffer = speaker.buffer + speaker.buffer_index;
|
||
speaker.ep->request.size = UAC_EP_MAX_PACKET_SIZE;
|
||
speaker.ep->request.req_type = UIO_REQUEST_READ_FULL;
|
||
rt_usbd_io_request(func->device, speaker.ep, &speaker.ep->request);
|
||
|
||
speaker.buffer_index += UAC_EP_MAX_PACKET_SIZE;
|
||
//os_printf("buffer_index:%d \n",speaker.buffer_index);
|
||
if (speaker.buffer_index >= AUDIO_BUFFER_SZ)
|
||
{
|
||
speaker.buffer_index = 0;
|
||
rt_event_send(speaker.event, EVENT_AUDIO_DATA);
|
||
}
|
||
else if (speaker.buffer_index == AUDIO_BUFFER_SZ / 2)
|
||
{
|
||
rt_event_send(speaker.event, EVENT_AUDIO_DATA);
|
||
}
|
||
|
||
return RT_EOK;
|
||
}
|
||
|
||
static rt_err_t _interface_as_handler(ufunction_t func, ureq_t setup)
|
||
{
|
||
RT_ASSERT(func != RT_NULL);
|
||
RT_ASSERT(func->device != RT_NULL);
|
||
RT_ASSERT(setup != RT_NULL);
|
||
|
||
LOG_D("_interface_as_handler");
|
||
|
||
if ((setup->request_type & USB_REQ_TYPE_MASK) == USB_REQ_TYPE_STANDARD)
|
||
{
|
||
switch (setup->bRequest)
|
||
{
|
||
case USB_REQ_GET_INTERFACE:
|
||
break;
|
||
case USB_REQ_SET_INTERFACE:
|
||
LOG_D("set interface handler");
|
||
if (setup->wValue == 1)
|
||
{
|
||
_audio_start(func);
|
||
}
|
||
else if (setup->wValue == 0)
|
||
{
|
||
_audio_stop(func);
|
||
}
|
||
break;
|
||
default:
|
||
LOG_D("unknown uac request 0x%x", setup->bRequest);
|
||
return -RT_ERROR;
|
||
}
|
||
}
|
||
|
||
return RT_EOK;
|
||
}
|
||
|
||
static rt_err_t _function_enable(ufunction_t func)
|
||
{
|
||
RT_ASSERT(func != RT_NULL);
|
||
|
||
LOG_D("uac function enable");
|
||
|
||
return RT_EOK;
|
||
}
|
||
|
||
static rt_err_t _function_disable(ufunction_t func)
|
||
{
|
||
RT_ASSERT(func != RT_NULL);
|
||
|
||
LOG_D("uac function disable");
|
||
_audio_stop(func);
|
||
return RT_EOK;
|
||
}
|
||
|
||
static struct ufunction_ops ops =
|
||
{
|
||
_function_enable,
|
||
_function_disable,
|
||
RT_NULL,
|
||
};
|
||
/**
|
||
* This function will configure uac descriptor.
|
||
*
|
||
* @param comm the communication interface number.
|
||
* @param data the data interface number.
|
||
*
|
||
* @return RT_EOK on successful.
|
||
*/
|
||
static rt_err_t _uac_descriptor_config(struct uac_ac_descriptor *ac,
|
||
rt_uint8_t cintf_nr, struct uac_as_descriptor *as, rt_uint8_t sintf_nr)
|
||
{
|
||
ac->hdr_desc.baInterfaceNr[0] = sintf_nr;
|
||
#ifdef RT_USB_DEVICE_COMPOSITE
|
||
ac->iad_desc.bFirstInterface = cintf_nr;
|
||
#endif
|
||
|
||
return RT_EOK;
|
||
}
|
||
|
||
static rt_err_t _uac_samplerate_config(struct uac_as_descriptor *as, rt_uint32_t samplerate)
|
||
{
|
||
as->format_type_desc.tSamFreq[0 * 3 + 2] = samplerate >> 16 & 0xff;
|
||
as->format_type_desc.tSamFreq[0 * 3 + 1] = samplerate >> 8 & 0xff;
|
||
as->format_type_desc.tSamFreq[0 * 3 + 0] = samplerate & 0xff;
|
||
return RT_EOK;
|
||
}
|
||
|
||
/**
|
||
* This function will create a uac function instance.
|
||
*
|
||
* @param device the usb device object.
|
||
*
|
||
* @return RT_EOK on successful.
|
||
*/
|
||
ufunction_t rt_usbd_function_uac_speaker_create(udevice_t device)
|
||
{
|
||
ufunction_t func;
|
||
uintf_t intf_ac, intf_as;
|
||
ualtsetting_t setting_as0;
|
||
ualtsetting_t setting_ac, setting_as;
|
||
struct uac_as_descriptor *as_desc_t;
|
||
|
||
/* parameter check */
|
||
RT_ASSERT(device != RT_NULL);
|
||
|
||
#ifdef RT_USB_DEVICE_COMPOSITE
|
||
rt_usbd_device_set_interface_string(device, SPK_INTF_STR_INDEX, _ustring[2]);
|
||
#else
|
||
/* set usb device string description */
|
||
rt_usbd_device_set_string(device, _ustring);
|
||
#endif
|
||
/* create a uac function */
|
||
func = rt_usbd_function_new(device, &dev_desc, &ops);
|
||
//not support HS
|
||
//rt_usbd_device_set_qualifier(device, &dev_qualifier);
|
||
|
||
/* create interface */
|
||
intf_ac = rt_usbd_interface_new(device, RT_NULL);
|
||
intf_as = rt_usbd_interface_new(device, _interface_as_handler);
|
||
|
||
/* create alternate setting */
|
||
setting_ac = rt_usbd_altsetting_new(sizeof(struct uac_ac_descriptor));
|
||
setting_as0 = rt_usbd_altsetting_new(sizeof(struct uinterface_descriptor));
|
||
setting_as = rt_usbd_altsetting_new(sizeof(struct uac_as_descriptor));
|
||
/* config desc in alternate setting */
|
||
rt_usbd_altsetting_config_descriptor(setting_ac, &ac_desc,
|
||
(rt_off_t) & ((struct uac_ac_descriptor *)0)->intf_desc);
|
||
rt_usbd_altsetting_config_descriptor(setting_as0, &as_desc0, 0);
|
||
rt_usbd_altsetting_config_descriptor(setting_as, &as_desc,
|
||
(rt_off_t) & ((struct uac_as_descriptor *)0)->intf_desc);
|
||
/* configure the uac interface descriptor */
|
||
_uac_descriptor_config(setting_ac->desc, intf_ac->intf_num, setting_as->desc, intf_as->intf_num);
|
||
_uac_samplerate_config(setting_as->desc, AUDIO_SAMPLERATE);
|
||
|
||
/* create endpoint */
|
||
as_desc_t = (struct uac_as_descriptor *)setting_as->desc;
|
||
speaker.ep = rt_usbd_endpoint_new(&as_desc_t->ep_desc, _ep_data_handler);
|
||
|
||
/* add the endpoint to the alternate setting */
|
||
rt_usbd_altsetting_add_endpoint(setting_as, speaker.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_speaker_init(void)
|
||
{
|
||
rt_thread_t speaker_tid;
|
||
speaker.event = rt_event_create("speaker_event", RT_IPC_FLAG_FIFO);
|
||
|
||
speaker_tid = rt_thread_create("speaker_thread",
|
||
speaker_entry, RT_NULL,
|
||
1024,
|
||
5, 10);
|
||
|
||
if (speaker_tid != RT_NULL)
|
||
rt_thread_startup(speaker_tid);
|
||
return RT_EOK;
|
||
}
|
||
|
||
|
||
/*
|
||
* register uac class
|
||
*/
|
||
static struct udclass uac_speaker_class =
|
||
{
|
||
.rt_usbd_function_create = rt_usbd_function_uac_speaker_create
|
||
};
|
||
|
||
|
||
//需要初始化DAC的采样率，与UAC一致
|
||
int rt_usbd_uac_speaker_class_register(void)
|
||
{
|
||
rt_usbd_class_register(&uac_speaker_class);
|
||
return 0;
|
||
}
|
||
|
||
|
||
#endif
|