576 lines
16 KiB
C
576 lines
16 KiB
C
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/*
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* Copyright (c) 2006-2019, 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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* 2019-09-19 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 "audio.h"
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#define DBG_TAG "usbd.audio.speaker"
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#define DBG_LVL DBG_INFO
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#include <rtdbg.h>
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#define AUDIO_SAMPLERATE 16000
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#define AUDIO_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 AUDIO_PER_MS_SZ ((AUDIO_SAMPLERATE * AUDIO_CHANNEL * RESOLUTION_BYTE) / 1000)
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#define AUDIO_BUFFER_SZ (AUDIO_PER_MS_SZ * 20) /* 20ms */
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#if defined(RT_USBD_SPEAKER_DEVICE_NAME)
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#define SPEAKER_DEVICE_NAME RT_USBD_SPEAKER_DEVICE_NAME
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#else
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#define SPEAKER_DEVICE_NAME "sound0"
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#endif
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#define EVENT_AUDIO_START (1 << 0)
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#define EVENT_AUDIO_STOP (1 << 1)
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#define EVENT_AUDIO_DATA (1 << 2)
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/*
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* uac speaker 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 AUDIO_CHANNEL
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#define UAC_INTR_NUM 1
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#define UAC_CH_NUM 1
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#define UAC_FORMAT_NUM 1
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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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DECLARE_UAC_AC_HEADER_DESCRIPTOR(UAC_INTR_NUM) hdr_desc;
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struct uac_input_terminal_descriptor it_desc;
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struct uac1_output_terminal_descriptor ot_desc;
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#if UAC_USE_FEATURE_UNIT
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DECLARE_UAC_FEATURE_UNIT_DESCRIPTOR(UAC_CH_NUM) 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 uac1_as_header_descriptor hdr_desc;
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DECLARE_UAC_FORMAT_TYPE_I_DISCRETE_DESC(UAC_FORMAT_NUM) format_type_desc;
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struct uendpoint_descriptor ep_desc;
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struct uac_iso_endpoint_descriptor as_ep_desc;
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};
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/*
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* uac speaker device type
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*/
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struct uac_audio_speaker
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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_speaker speaker;
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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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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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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 Speaker",
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"32021919830108",
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"Configuration",
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"Interface",
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};
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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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0x00,
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},
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/* Header Descriptor */
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{
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UAC_DT_AC_HEADER_SIZE(UAC_INTR_NUM),
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UAC_CS_INTERFACE,
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UAC_HEADER,
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0x0100, /* Version: 1.00 */
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0x0027, /* Total length: 39 */
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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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UAC_DT_INPUT_TERMINAL_SIZE,
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UAC_CS_INTERFACE,
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UAC_INPUT_TERMINAL,
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0x01, /* Terminal ID: 1 */
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0x0101, /* Terminal Type: USB Streaming (0x0101) */
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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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UAC_DT_OUTPUT_TERMINAL_SIZE,
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UAC_CS_INTERFACE,
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UAC_OUTPUT_TERMINAL,
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0x02, /* Terminal ID: 2 */
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0x0302, /* Terminal Type: Headphones (0x0302) */
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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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UAC_DT_FEATURE_UNIT_SIZE(UAC_CH_NUM),
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UAC_CS_INTERFACE,
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UAC_FEATURE_UNIT,
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0x02,
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0x0101,
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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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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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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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UAC_DT_AS_HEADER_SIZE,
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UAC_CS_INTERFACE,
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UAC_AS_GENERAL,
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0x01, /* Terminal ID: 1 */
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0x01, /* Interface delay in frames: 1 */
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UAC_FORMAT_TYPE_I_PCM,
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},
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/* Format type i Descriptor */
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{
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UAC_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(UAC_FORMAT_NUM),
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UAC_CS_INTERFACE,
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UAC_FORMAT_TYPE,
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UAC_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_OUT,
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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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UAC_ISO_ENDPOINT_DESC_SIZE,
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UAC_CS_ENDPOINT,
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UAC_MS_GENERAL,
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},
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};
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void speaker_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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speaker.buffer = rt_malloc(AUDIO_BUFFER_SZ);
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if (speaker.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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speaker.dev = rt_device_find(SPEAKER_DEVICE_NAME);
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if (speaker.dev == RT_NULL)
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{
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LOG_E("can't find device:%s", SPEAKER_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(speaker.event, EVENT_AUDIO_START | EVENT_AUDIO_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 (speaker.open_count == 0)
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{
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continue;
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}
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LOG_D("play start");
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rt_device_open(speaker.dev, RT_DEVICE_OFLAG_WRONLY);
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caps.main_type = AUDIO_TYPE_OUTPUT;
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caps.sub_type = AUDIO_DSP_PARAM;
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caps.udata.config.samplerate = AUDIO_SAMPLERATE;
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caps.udata.config.channels = AUDIO_CHANNEL;
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caps.udata.config.samplebits = RESOLUTION_BITS;
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rt_device_control(speaker.dev, AUDIO_CTL_CONFIGURE, &caps);
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while (1)
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{
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if (rt_event_recv(speaker.event, EVENT_AUDIO_DATA | EVENT_AUDIO_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 (speaker.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_AUDIO_DATA)
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{
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index = (speaker.buffer_index >= AUDIO_BUFFER_SZ / 2) ? 0 : (AUDIO_BUFFER_SZ / 2);
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rt_device_write(speaker.dev, 0, speaker.buffer + index, AUDIO_BUFFER_SZ / 2);
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}
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else if (e & EVENT_AUDIO_STOP)
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{
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break;
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}
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}
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LOG_D("play stop");
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rt_device_close(speaker.dev);
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}
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__exit:
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if (speaker.buffer)
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rt_free(speaker.buffer);
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}
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static rt_err_t _audio_start(ufunction_t func)
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{
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speaker.ep->request.buffer = speaker.buffer;
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speaker.ep->request.size = UAC_EP_MAX_PACKET_SIZE;
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speaker.ep->request.req_type = UIO_REQUEST_READ_FULL;
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rt_usbd_io_request(func->device, speaker.ep, &speaker.ep->request);
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speaker.open_count ++;
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rt_event_send(speaker.event, EVENT_AUDIO_START);
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return 0;
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}
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static rt_err_t _audio_stop(ufunction_t func)
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{
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speaker.open_count --;
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rt_event_send(speaker.event, EVENT_AUDIO_STOP);
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return 0;
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}
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static rt_err_t _ep_data_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_handler");
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speaker.ep->request.buffer = speaker.buffer + speaker.buffer_index;
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speaker.ep->request.size = UAC_EP_MAX_PACKET_SIZE;
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speaker.ep->request.req_type = UIO_REQUEST_READ_FULL;
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rt_usbd_io_request(func->device, speaker.ep, &speaker.ep->request);
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speaker.buffer_index += UAC_EP_MAX_PACKET_SIZE;
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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][2] = samplerate >> 16 & 0xff;
|
||
|
|
as->format_type_desc.tSamFreq[0][1] = samplerate >> 8 & 0xff;
|
||
|
|
as->format_type_desc.tSamFreq[0][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);
|
||
|
|
|
||
|
|
/* set usb device string description */
|
||
|
|
rt_usbd_device_set_string(device, _ustring);
|
||
|
|
|
||
|
|
/* 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;
|
||
|
|
}
|
||
|
|
INIT_COMPONENT_EXPORT(audio_speaker_init);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* register uac class
|
||
|
|
*/
|
||
|
|
static struct udclass uac_speaker_class =
|
||
|
|
{
|
||
|
|
.rt_usbd_function_create = rt_usbd_function_uac_speaker_create
|
||
|
|
};
|
||
|
|
|
||
|
|
int rt_usbd_uac_speaker_class_register(void)
|
||
|
|
{
|
||
|
|
rt_usbd_class_register(&uac_speaker_class);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
INIT_PREV_EXPORT(rt_usbd_uac_speaker_class_register);
|