add tentative example

This commit is contained in:
kkitayam 2021-07-31 19:35:22 +09:00
parent 033d6b28ff
commit 019c1ab09e
8 changed files with 639 additions and 311 deletions

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@ -0,0 +1,12 @@
include ../../../tools/top.mk
include ../../make.mk
INC += \
src \
$(TOP)/hw \
# Example source
EXAMPLE_SOURCE += $(wildcard src/*.c)
SRC_C += $(addprefix $(CURRENT_PATH)/, $(EXAMPLE_SOURCE))
include ../../rules.mk

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@ -0,0 +1,123 @@
/*
* The MIT License (MIT)
*
* Copyright (c) 2019 Ha Thach (tinyusb.org)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "bsp/board.h"
#include "tusb.h"
//--------------------------------------------------------------------+
// MACRO CONSTANT TYPEDEF PROTYPES
//--------------------------------------------------------------------+
/* Blink pattern
* - 250 ms : device not mounted
* - 1000 ms : device mounted
* - 2500 ms : device is suspended
*/
enum {
BLINK_NOT_MOUNTED = 250,
BLINK_MOUNTED = 1000,
BLINK_SUSPENDED = 2500,
};
static uint32_t blink_interval_ms = BLINK_NOT_MOUNTED;
void led_blinking_task(void);
void video_task(void);
/*------------- MAIN -------------*/
int main(void)
{
board_init();
tusb_init();
while (1)
{
tud_task(); // tinyusb device task
led_blinking_task();
video_task();
}
return 0;
}
//--------------------------------------------------------------------+
// Device callbacks
//--------------------------------------------------------------------+
// Invoked when device is mounted
void tud_mount_cb(void)
{
blink_interval_ms = BLINK_MOUNTED;
}
// Invoked when device is unmounted
void tud_umount_cb(void)
{
blink_interval_ms = BLINK_NOT_MOUNTED;
}
// Invoked when usb bus is suspended
// remote_wakeup_en : if host allow us to perform remote wakeup
// Within 7ms, device must draw an average of current less than 2.5 mA from bus
void tud_suspend_cb(bool remote_wakeup_en)
{
(void) remote_wakeup_en;
blink_interval_ms = BLINK_SUSPENDED;
}
// Invoked when usb bus is resumed
void tud_resume_cb(void)
{
blink_interval_ms = BLINK_MOUNTED;
}
//--------------------------------------------------------------------+
// USB Video
//--------------------------------------------------------------------+
void video_task(void)
{
}
//--------------------------------------------------------------------+
// BLINKING TASK
//--------------------------------------------------------------------+
void led_blinking_task(void)
{
static uint32_t start_ms = 0;
static bool led_state = false;
// Blink every interval ms
if ( board_millis() - start_ms < blink_interval_ms) return; // not enough time
start_ms += blink_interval_ms;
board_led_write(led_state);
led_state = 1 - led_state; // toggle
}

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/*
* The MIT License (MIT)
*
* Copyright (c) 2019 Ha Thach (tinyusb.org)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#ifndef _TUSB_CONFIG_H_
#define _TUSB_CONFIG_H_
#ifdef __cplusplus
extern "C" {
#endif
//--------------------------------------------------------------------
// COMMON CONFIGURATION
//--------------------------------------------------------------------
// RHPort number used for device can be defined by board.mk, default to port 0
#ifndef BOARD_DEVICE_RHPORT_NUM
#define BOARD_DEVICE_RHPORT_NUM 0
#endif
// RHPort max operational speed can defined by board.mk
// Default to Highspeed for MCU with internal HighSpeed PHY (can be port specific), otherwise FullSpeed
#ifndef BOARD_DEVICE_RHPORT_SPEED
#if (CFG_TUSB_MCU == OPT_MCU_LPC18XX || CFG_TUSB_MCU == OPT_MCU_LPC43XX || CFG_TUSB_MCU == OPT_MCU_MIMXRT10XX || \
CFG_TUSB_MCU == OPT_MCU_NUC505 || CFG_TUSB_MCU == OPT_MCU_CXD56)
#define BOARD_DEVICE_RHPORT_SPEED OPT_MODE_HIGH_SPEED
#else
#define BOARD_DEVICE_RHPORT_SPEED OPT_MODE_FULL_SPEED
#endif
#endif
// Device mode with rhport and speed defined by board.mk
#if BOARD_DEVICE_RHPORT_NUM == 0
#define CFG_TUSB_RHPORT0_MODE (OPT_MODE_DEVICE | BOARD_DEVICE_RHPORT_SPEED)
#elif BOARD_DEVICE_RHPORT_NUM == 1
#define CFG_TUSB_RHPORT1_MODE (OPT_MODE_DEVICE | BOARD_DEVICE_RHPORT_SPEED)
#else
#error "Incorrect RHPort configuration"
#endif
// This example doesn't use an RTOS
#ifndef CFG_TUSB_OS
#define CFG_TUSB_OS OPT_OS_NONE
#endif
// CFG_TUSB_DEBUG is defined by compiler in DEBUG build
// #define CFG_TUSB_DEBUG 0
/* USB DMA on some MCUs can only access a specific SRAM region with restriction on alignment.
* Tinyusb use follows macros to declare transferring memory so that they can be put
* into those specific section.
* e.g
* - CFG_TUSB_MEM SECTION : __attribute__ (( section(".usb_ram") ))
* - CFG_TUSB_MEM_ALIGN : __attribute__ ((aligned(4)))
*/
#ifndef CFG_TUSB_MEM_SECTION
#define CFG_TUSB_MEM_SECTION
#endif
#ifndef CFG_TUSB_MEM_ALIGN
#define CFG_TUSB_MEM_ALIGN __attribute__ ((aligned(4)))
#endif
//--------------------------------------------------------------------
// DEVICE CONFIGURATION
//--------------------------------------------------------------------
#ifndef CFG_TUD_ENDPOINT0_SIZE
#define CFG_TUD_ENDPOINT0_SIZE 64
#endif
//------------- CLASS -------------//
#define CFG_TUD_CDC 0
#define CFG_TUD_MSC 0
#define CFG_TUD_HID 0
#define CFG_TUD_MIDI 0
#define CFG_TUD_AUDIO 0
#define CFG_TUD_VIDEO 1
#define CFG_TUD_VENDOR 0
#ifdef __cplusplus
}
#endif
#endif /* _TUSB_CONFIG_H_ */

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@ -0,0 +1,172 @@
/*
* The MIT License (MIT)
*
* Copyright (c) 2019 Ha Thach (tinyusb.org)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#include "tusb.h"
#include "usb_descriptors.h"
/* A combination of interfaces must have a unique product id, since PC will save device driver after the first plug.
* Same VID/PID with different interface e.g MSC (first), then CDC (later) will possibly cause system error on PC.
*
* Auto ProductID layout's Bitmap:
* [MSB] VIDEO | AUDIO | MIDI | HID | MSC | CDC [LSB]
*/
#define _PID_MAP(itf, n) ( (CFG_TUD_##itf) << (n) )
#define USB_PID (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | \
_PID_MAP(MIDI, 3) | _PID_MAP(AUDIO, 4) | _PID_MAP(VIDEO, 5) | _PID_MAP(VENDOR, 6) )
//--------------------------------------------------------------------+
// Device Descriptors
//--------------------------------------------------------------------+
tusb_desc_device_t const desc_device =
{
.bLength = sizeof(tusb_desc_device_t),
.bDescriptorType = TUSB_DESC_DEVICE,
.bcdUSB = 0x0200,
// Use Interface Association Descriptor (IAD) for CDC
// As required by USB Specs IAD's subclass must be common class (2) and protocol must be IAD (1)
.bDeviceClass = TUSB_CLASS_MISC,
.bDeviceSubClass = MISC_SUBCLASS_COMMON,
.bDeviceProtocol = MISC_PROTOCOL_IAD,
.bMaxPacketSize0 = CFG_TUD_ENDPOINT0_SIZE,
.idVendor = 0xCafe,
.idProduct = USB_PID,
.bcdDevice = 0x0100,
.iManufacturer = 0x01,
.iProduct = 0x02,
.iSerialNumber = 0x03,
.bNumConfigurations = 0x01
};
// Invoked when received GET DEVICE DESCRIPTOR
// Application return pointer to descriptor
uint8_t const * tud_descriptor_device_cb(void)
{
return (uint8_t const *) &desc_device;
}
//--------------------------------------------------------------------+
// Configuration Descriptor
//--------------------------------------------------------------------+
#define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_VIDEO_CAPTURE_DESC_LEN)
#if CFG_TUSB_MCU == OPT_MCU_LPC175X_6X || CFG_TUSB_MCU == OPT_MCU_LPC177X_8X || CFG_TUSB_MCU == OPT_MCU_LPC40XX
// LPC 17xx and 40xx endpoint type (bulk/interrupt/iso) are fixed by its number
// 0 control, 1 In, 2 Bulk, 3 Iso, 4 In, 5 Bulk etc ...
#define EPNUM_VIDEO_IN 0x83
#elif CFG_TUSB_MCU == OPT_MCU_SAMG || CFG_TUSB_MCU == OPT_MCU_CXD56
// SAMG doesn't support a same endpoint number with different direction IN and OUT
// e.g EP1 OUT & EP1 IN cannot exist together
#define EPNUM_VIDEO_IN 0x81
#elif CFG_TUSB_MCU == OPT_MCU_CXD56
// CXD56 doesn't support a same endpoint number with different direction IN and OUT
// e.g EP1 OUT & EP1 IN cannot exist together
// CXD56 USB driver has fixed endpoint type (bulk/interrupt/iso) and direction (IN/OUT) by its number
// 0 control (IN/OUT), 1 Bulk (IN), 2 Bulk (OUT), 3 In (IN), 4 Bulk (IN), 5 Bulk (OUT), 6 In (IN)
#define EPNUM_VIDEO_IN 0x81
#else
#define EPNUM_VIDEO_IN 0x81
#endif
uint8_t const desc_fs_configuration[] =
{
// Config number, interface count, string index, total length, attribute, power in mA
TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, TUSB_DESC_CONFIG_ATT_REMOTE_WAKEUP, 100),
// IAD for Video Control
TUD_VIDEO_CAPTURE_DESCRIPTOR(4, EPNUM_VIDEO_IN, 128, 96, 15)
};
// Invoked when received GET CONFIGURATION DESCRIPTOR
// Application return pointer to descriptor
// Descriptor contents must exist long enough for transfer to complete
uint8_t const * tud_descriptor_configuration_cb(uint8_t index)
{
(void) index; // for multiple configurations
return desc_fs_configuration;
}
//--------------------------------------------------------------------+
// String Descriptors
//--------------------------------------------------------------------+
// array of pointer to string descriptors
char const* string_desc_arr [] =
{
(const char[]) { 0x09, 0x04 }, // 0: is supported language is English (0x0409)
"TinyUSB", // 1: Manufacturer
"TinyUSB Device", // 2: Product
"123456", // 3: Serials, should use chip ID
"TinyUSB UVC", // 4: UVC Interface
};
static uint16_t _desc_str[32];
// Invoked when received GET STRING DESCRIPTOR request
// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete
uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
{
(void) langid;
uint8_t chr_count;
if ( index == 0)
{
memcpy(&_desc_str[1], string_desc_arr[0], 2);
chr_count = 1;
}else
{
// Note: the 0xEE index string is a Microsoft OS 1.0 Descriptors.
// https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/microsoft-defined-usb-descriptors
if ( !(index < sizeof(string_desc_arr)/sizeof(string_desc_arr[0])) ) return NULL;
const char* str = string_desc_arr[index];
// Cap at max char
chr_count = strlen(str);
if ( chr_count > 31 ) chr_count = 31;
// Convert ASCII string into UTF-16
for(uint8_t i=0; i<chr_count; i++)
{
_desc_str[1+i] = str[i];
}
}
// first byte is length (including header), second byte is string type
_desc_str[0] = (TUSB_DESC_STRING << 8 ) | (2*chr_count + 2);
return _desc_str;
}

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@ -0,0 +1,97 @@
/*
* The MIT License (MIT)
*
* Copyright (c) 2020 Jerzy Kasenbreg
* Copyright (c) 2021 Koji KITAYAMA
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#ifndef _USB_DESCRIPTORS_H_
#define _USB_DESCRIPTORS_H_
/* Time stamp base clock. It is a deprecated parameter. */
#define UVC_CLOCK_FREQUENCY 27000000
// video capture path
#define UVC_ENTITY_CAP_INPUT_TERMINAL 0x01
#define UVC_ENTITY_CAP_OUTPUT_TERMINAL 0x02
enum {
ITF_NUM_VIDEO_CONTROL = 0,
ITF_NUM_VIDEO_STREAMING,
ITF_NUM_TOTAL
};
#define TUD_VIDEO_CAPTURE_DESC_LEN (TUD_VIDEO_DESC_IAD_LEN\
/* control */\
+ TUD_VIDEO_DESC_STD_VC_LEN\
+ TUD_VIDEO_DESC_CS_VC_LEN\
+ TUD_VIDEO_DESC_INPUT_TERM_LEN\
+ TUD_VIDEO_DESC_OUTPUT_TERM_LEN\
/* Interface 1, Alternate 0 */\
+ TUD_VIDEO_DESC_STD_VS_LEN\
+ TUD_VIDEO_DESC_CS_VS_IN_LEN\
+ TUD_VIDEO_DESC_CS_VS_FMT_UNCOMPR_LEN\
+ TUD_VIDEO_DESC_CS_VS_FRM_UNCOMPR_CONT_LEN)
#define TUD_VIDEO_DESC_CS_VS_FMT_YUY2(_fmtidx, _numfmtdesc, _frmidx, _asrx, _asry, _interlace, _cp) \
TUD_VIDEO_DESC_CS_VS_FMT_UNCOMPR(_fmtidx, _numfmtdesc, TUD_VIDEO_GUID_YUY2, 16, _frmidx, _asrx, _asry, _interlace, _cp)
#define TUD_VIDEO_DESC_CS_VS_FMT_NV12(_fmtidx, _numfmtdesc, _frmidx, _asrx, _asry, _interlace, _cp) \
TUD_VIDEO_DESC_CS_VS_FMT_UNCOMPR(_fmtidx, _numfmtdesc, TUD_VIDEO_GUID_NV12, 12, _frmidx, _asrx, _asry, _interlace, _cp)
#define TUD_VIDEO_DESC_CS_VS_FMT_M420(_fmtidx, _numfmtdesc, _frmidx, _asrx, _asry, _interlace, _cp) \
TUD_VIDEO_DESC_CS_VS_FMT_UNCOMPR(_fmtidx, _numfmtdesc, TUD_VIDEO_GUID_M420, 12, _frmidx, _asrx, _asry, _interlace, _cp)
#define TUD_VIDEO_DESC_CS_VS_FMT_I420(_fmtidx, _numfmtdesc, _frmidx, _asrx, _asry, _interlace, _cp) \
TUD_VIDEO_DESC_CS_VS_FMT_UNCOMPR(_fmtidx, _numfmtdesc, TUD_VIDEO_GUID_I420, 12, _frmidx, _asrx, _asry, _interlace, _cp)
#define TUD_VIDEO_CAPTURE_DESCRIPTOR(_stridx, _epin, _width, _height, _fps) \
TUD_VIDEO_DESC_IAD(ITF_NUM_VIDEO_CONTROL, ITF_NUM_TOTAL, _stridx), \
/* Video control 0 */ \
TUD_VIDEO_DESC_STD_VC(ITF_NUM_VIDEO_CONTROL, 0, 0), \
TUD_VIDEO_DESC_CS_VC( /* UVC 1.5*/ 0x0150, \
TUD_VIDEO_DESC_INPUT_TERM_LEN + \
TUD_VIDEO_DESC_OUTPUT_TERM_LEN, \
UVC_CLOCK_FREQUENCY, 1, 1), \
TUD_VIDEO_DESC_INPUT_TERM(UVC_ENTITY_CAP_INPUT_TERMINAL,\
VIDEO_TT_COMPOSITE_CONNECTOR, 0, 0), \
TUD_VIDEO_DESC_OUTPUT_TERM(UVC_ENTITY_CAP_OUTPUT_TERMINAL,\
VIDEO_TT_STREAMING, 0, 1, 0), \
/* Video stream alt. 0 */ \
TUD_VIDEO_DESC_STD_VS( 1, 0, 0, 0), \
/* Video stream header for without still image capture */ \
TUD_VIDEO_DESC_CS_VS_INPUT(1, \
TUD_VIDEO_DESC_CS_VS_FMT_UNCOMPR_LEN + \
TUD_VIDEO_DESC_CS_VS_FRM_UNCOMPR_CONT_LEN,\
_epin, /*bmInfo*/ 0, UVC_ENTITY_CAP_OUTPUT_TERMINAL, \
0, 2, 0, 0, 0, 1, 0), \
/* Video stream format */ \
TUD_VIDEO_DESC_CS_VS_FMT_I420(0, 1, 0, 1, 1, 0, 0), \
/* Video stream frame format */ \
TUD_VIDEO_DESC_CS_VS_FRM_UNCOMPR_CONT( 1, 0, _width, _height, \
_width * _height * 12, _width * _height * 12 * _fps, \
_width * _height * 12, \
(10000000/_fps), (10000000/1), (10000000/_fps), 166666), \
/* VS alt 1 */ \
TUD_VIDEO_DESC_STD_VS( 1, 1, 1, 0), \
/* EP */ \
TUD_VIDEO_DESC_EP_ISO(_epin, (_width * _height * 12 / 8) * _fps, 1)
#endif

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@ -228,8 +228,17 @@ typedef struct TU_ATTR_PACKED {
//--------------------------------------------------------------------+
// Requests
//--------------------------------------------------------------------+
/* 4.3.1.1 */
typedef struct TU_ATTR_PACKED {
uint16_t bmHint;
struct TU_ATTR_PACKEDt {
uint16_t dwFrameInterval: 1;
uint16_t wKeyFrameRatel : 1;
uint16_t wPFrameRate : 1;
uint16_t wCompQuality : 1;
uint16_t wCompWindowSize: 1;
uint16_t : 0;
} bmHint;
uint8_t bFormatIndex;
uint8_t bFrameIndex;
uint32_t dwFrameInterval;
@ -241,7 +250,12 @@ typedef struct TU_ATTR_PACKED {
uint32_t dwMaxVideoFrameSize;
uint32_t dwMaxPayloadTransferSize;
uint32_t dwClockFrequency;
uint8_t bmFramingInfo;
struct TU_ATTR_PACKED {
uint8_t FrameID : 1;
uint8_t EndOfFrame: 1;
uint8_t EndOfSlice: 1;
uint8_t : 0;
} bmFramingInfo;
uint8_t bPreferedVersion;
uint8_t bMinVersion;
uint8_t bMaxVersion;

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@ -82,7 +82,7 @@ typedef struct
} videod_interface_t;
#define ITF_MEM_RESET_SIZE offsetof(cdcd_interface_t, wanted_char)
#define ITF_MEM_RESET_SIZE offsetof(videod_interface_t, ctl_buf)
//--------------------------------------------------------------------+
// INTERNAL OBJECT & FUNCTION DECLARATION
@ -109,6 +109,14 @@ static uint16_t* _get_desc_ofs(videod_interface_t *self, unsigned itfnum)
return NULL;
}
static tusb_desc_vs_itf_t const *_get_desc_vs(videod_interface_t const *self, unsigned itfnum)
{
uint16_t const *ofs = _get_desc_ofs((videod_interface_t*)self, itfnum);
if (!ofs) return NULL;
return (tusb_desc_vs_itf_t const*)(self->beg + *ofs);
}
/** Find the first descriptor with the specified descriptor type.
*
* @param[in] beg The head of descriptor byte array.
@ -188,6 +196,10 @@ static void const* _find_desc_entity(tusb_desc_vc_itf_t const *vc, unsigned enti
return end;
}
/** Close current video control interface.
*
* @param[in,out] self The context.
* @param[in] altnum The target alternate setting number. */
static bool _close_vc_itf(uint8_t rhport, videod_interface_t *self)
{
tusb_desc_vc_itf_t const *vc = _get_desc_vc(self);
@ -206,6 +218,10 @@ static bool _close_vc_itf(uint8_t rhport, videod_interface_t *self)
return true;
}
/** Set the specified alternate setting to own video control interface.
*
* @param[in,out] self The context.
* @param[in] altnum The target alternate setting number. */
static bool _open_vc_itf(uint8_t rhport, videod_interface_t *self, unsigned altnum)
{
void const *beg = self->beg;
@ -238,48 +254,6 @@ static bool _open_vc_itf(uint8_t rhport, videod_interface_t *self, unsigned altn
return true;
}
/** Set the specified alternate setting to own video control interface.
*
* @param[in,out] self The context.
* @param[in] altnum The target alternate setting number. */
static bool _set_vc_itf(uint8_t rhport, videod_interface_t *self, unsigned altnum)
{
void const *beg = self->beg;
void const *end = beg + self->len;
/* The head descriptor is a video control interface descriptor. */
unsigned itfnum = ((tusb_desc_interface_t const *)beg)->bInterfaceNumber;
void const *cur = _find_desc_itf(beg, end, itfnum, altnum);
TU_VERIFY(cur < end);
tusb_desc_vc_itf_t const *vc = (tusb_desc_vc_itf_t const *)cur;
/* Support for up to 2 streaming interfaces only. */
TU_VERIFY(vc->ctl.bInCollection < 3);
/* Close the previous notification endpoint if it is opened */
if (self->ep_notif) {
usbd_edpt_close(rhport, self->ep_notif);
self->ep_notif = 0;
}
/* Advance to the next descriptor after the class-specific VC interface header descriptor. */
cur += vc->std.bLength + vc->ctl.bLength;
/* Update to point the end of the video control interface descriptor. */
end = cur + vc->ctl.wTotalLength;
/* Open the notification endpoint if it exist. */
if (vc->std.bNumEndpoints) {
/* Support for 1 endpoint only. */
TU_VERIFY(1 == vc->std.bNumEndpoints);
/* Find the notification endpoint descriptor. */
cur = _find_desc(cur, end, TUSB_DESC_ENDPOINT);
TU_VERIFY(cur < end);
tusb_desc_endpoint_t const *notif = (tusb_desc_endpoint_t const *)cur;
/* Open the notification endpoint */
TU_ASSERT(usbd_edpt_open(rhport, notif));
self->ep_notif = notif->bEndpointAddress;
}
self->ofs[0] = (void const*)vc - beg;
return true;
}
/** Set the specified alternate setting to own video control interface.
*
* @param[in,out] self The context.
@ -293,7 +267,7 @@ static bool _close_vs_itf(uint8_t rhport, videod_interface_t *self, unsigned itf
void const *cur = (void const*)vs + vs->std.bLength + vs->stm.bLength;
/* The end of the video streaming interface descriptor. */
void const *end = cur + vs->stm.wTotalLength;
if (unsigned i = 0; i < vs->std.bNumEndpoints; ++i) {
for (unsigned i = 0; i < vs->std.bNumEndpoints; ++i) {
cur = _find_desc(cur, end, TUSB_DESC_ENDPOINT);
TU_ASSERT(cur < end);
tusb_desc_endpoint_t const *ep = (tusb_desc_endpoint_t const *)cur;
@ -345,123 +319,28 @@ static bool _open_vs_itf(uint8_t rhport, videod_interface_t *self, unsigned itfn
return true;
}
/** Set the specified alternate setting to own video control interface.
*
* @param[in,out] self The context.
* @param[in] itfnum The target interface number.
* @param[in] altnum The target alternate setting number. */
static bool _set_vs_itf(uint8_t rhport, videod_interface_t *self, unsigned itfnum, unsigned altnum)
{
unsigned i;
tusb_desc_vc_itf_t const *vc = _get_desc_vc(self);
void const *end = self->beg + self->len;
/* Set the end of the video control interface descriptor. */
void const *cur = (void const*)vc + vc->std.bLength + vc->ctl.bLength + vc->ctl.wTotalLength;
/* Check itfnum is valid */
unsigned bInCollection = vc->ctl.bInCollection;
for (i = 0; (i < bInCollection) && (vc->ctl.baInterfaceNr[i] != itfnum); ++i) ;
TU_VERIFY(i < bInCollection);
cur = _find_desc_itf(cur, end, itfnum, altnum);
TU_VERIFY(cur < end);
tusb_desc_vs_itf_t const *vs = (tusb_desc_vs_itf_t const*)cur;
/* Advance to the next descriptor after the class-specific VS interface header descriptor. */
cur += vs->std.bLength + vs->stm.bLength;
/* Update to point the end of the video control interface descriptor. */
end = cur + vs->stm.wTotalLength;
switch (vs->stm.bDescriptorSubType) {
default: return false;
case VIDEO_CS_VS_INTERFACE_INPUT_HEADER:
/* Support for up to 2 endpoint only. */
TU_VERIFY(vc->std.bNumEndpoints < 3);
if (self->ep_sti) {
usbd_edpt_close(rhport, self->ep_sti);
self->ep_sti = 0;
}
if (self->ep_in) {
usbd_edpt_close(rhport, self->ep_in);
self->ep_in = 0;
}
if (i = 0; i < vs->std.bNumEndpoints; ++i) {
cur = _find_desc(cur, end, TUSB_DESC_ENDPOINT);
TU_VERIFY(cur < end);
tusb_desc_endpoint_t const *ep = (tusb_desc_endpoint_t const *)cur;
if (vs->stm.bEndpointAddress == ep->bEndpointAddress) {
/* video input endpoint */
TU_ASSERT(!self->ep_in);
TU_ASSERT(usbd_edpt_open(rhport, ep));
self->ep_in = ep->bEndpointAddress;
} else {
/* still image input endpoint */
TU_ASSERT(!self->ep_sti);
TU_ASSERT(usbd_edpt_open(rhport, ep));
self->ep_sti = ep->bEndpointAddress;
}
cur += tu_desc_len(cur);
}
break;
case VIDEO_CS_VS_INTERFACE_OUTPUT_HEADER:
/* Support for up to 1 endpoint only. */
TU_VERIFY(vc->std.bNumEndpoints < 2);
if (self->ep_out) {
usbd_edpt_close(rhport, self->ep_out);
self->ep_out = 0;
}
if (vs->std.bNumEndpoints) {
cur = _find_desc(cur, end, TUSB_DESC_ENDPOINT);
TU_VERIFY(cur < end);
tusb_desc_endpoint_t const *ep = (tusb_desc_endpoint_t const *)cur;
if (vs->stm.bEndpointAddress == ep->bEndpointAddress) {
/* video output endpoint */
TU_ASSERT(usbd_edpt_open(rhport, ep));
self->ep_out = ep->bEndpointAddress;
}
}
break;
}
for (unsigned i = 1; i < sizeof(self->ofs)/sizeof(ofs[0]); ++i) {
if (!self->ofs[i]) {
return true;
}
tusb_desc_interface_t const* itf = (tusb_desc_interface_t const*)(beg + ofs[i]);
if (itfnum == itf->bInterfaceNumber) return itf;
}
return NULL;
for (i = 0; i < sizeof(self->vs)/sizeof(self->vs[0]); ++i) {
if (!self->vs[i] || self->vs[i].stm.bInterfaceNumber == vs->stm.bInterfaceNumber) {
self->ofs[i] = (void const*)vs - self->beg;
return true;
}
}
return false;
}
static int handle_video_ctl_std_req_get_itf(uint8_t rhport, uint8_t stage, tusb_control_request_t const *request, unsigned itf)
{
if (stage != CONTROL_STAGE_SETUP)
return VIDEO_NO_ERROR;
videod_interface_t *self = &_videod_itf[itf];
TU_VERIFY(1 == request->wLength, VIDEO_UNKNOWN);
tusb_desc_interface_t const *p = _get_desc_cur_itf(self, itfnum);
if (!p) return VIDEO_UNKNOWN;
if (tud_control_xfer(rhport, request, &p->bAlternateSettings, sizeof(p->bAlternateSettings)))
return VIDEO_NO_ERROR;
return VIDEO_UNKNOWN;
}
/** Handle a standard request to the video control interface. */
static int handle_video_ctl_std_req(uint8_t rhport, uint8_t stage, tusb_control_request_t const *request, unsigned itf)
{
switch (p_request->bRequest) {
switch (request->bRequest) {
case TUSB_REQ_GET_INTERFACE:
handle_video_ctl_std_req_get_itf(rhport, stage, request, itf);
case TUSB_REQ_SET_INTERFACE:
if (stage != CONTROL_STAGE_SETUP) return VIDEO_NO_ERROR;
if (_set_vc_itf(rhport, &_videod_itf[itf], request->wValue))
TU_VERIFY(1 == request->wLength, VIDEO_UNKNOWN);
tusb_desc_vc_itf_t const *vc = _get_desc_vc(&_videod_itf[itf]);
if (!vc) return VIDEO_UNKNOWN;
if (tud_control_xfer(rhport, request,
(void*)&vc->std.bAlternateSetting,
sizeof(vc->std.bAlternateSetting)))
return VIDEO_NO_ERROR;
return VIDEO_UNKNOWN;
case TUSB_REQ_SET_INTERFACE:
if (stage != CONTROL_STAGE_SETUP) return VIDEO_NO_ERROR;
TU_VERIFY(0 == request->wLength, VIDEO_UNKNOWN);
if (!_close_vc_itf(rhport, &_videod_itf[itf]))
return VIDEO_UNKNOWN;
if (!_open_vc_itf(rhport, &_videod_itf[itf], request->wValue))
return VIDEO_UNKNOWN;
return VIDEO_NO_ERROR;
default: /* Unknown/Unsupported request */
TU_BREAKPOINT();
return VIDEO_INVALID_REQUEST;
@ -470,11 +349,11 @@ static int handle_video_ctl_std_req(uint8_t rhport, uint8_t stage, tusb_control_
static int handle_video_ctl_cs_req(uint8_t rhport, uint8_t stage, tusb_control_request_t const *request, unsigned itf)
{
videod_interface_t *self = &_videod_itf[i];
videod_interface_t *self = &_videod_itf[itf];
/* 4.2.1 Interface Control Request */
switch (TU_U16_HIGH(request->wValue)) {
case VIDEO_VC_CTL_VIDEO_POWER_MODE:
switch (p_request->bRequest) {
switch (request->bRequest) {
case VIDEO_REQUEST_SET_CUR:
if (stage == CONTROL_STAGE_SETUP) {
TU_LOG2(" Set Power Mode\r\n");
@ -482,7 +361,7 @@ static int handle_video_ctl_cs_req(uint8_t rhport, uint8_t stage, tusb_control_r
if (!tud_control_xfer(rhport, request, &self->power_mode, sizeof(self->power_mode)))
return VIDEO_UNKNOWN;
} else if (stage == CONTROL_STAGE_ACK) {
if (tud_video_power_mode_cb) return tud_video_power_mode_cb(itf, &self->power_mode);
if (tud_video_power_mode_cb) return tud_video_power_mode_cb(itf, self->power_mode);
}
return VIDEO_NO_ERROR;
case VIDEO_REQUEST_GET_CUR:
@ -497,7 +376,7 @@ static int handle_video_ctl_cs_req(uint8_t rhport, uint8_t stage, tusb_control_r
if (stage == CONTROL_STAGE_SETUP) {
TU_LOG2(" Get Info Power Mode\r\n");
TU_VERIFY(1 == request->wLength, VIDEO_UNKNOWN);
if (!tud_control_xfer(rhport, request, &_cap_get_set, sizeof(_cap_get_set)))
if (!tud_control_xfer(rhport, request, (uint8_t*)&_cap_get_set, sizeof(_cap_get_set)))
return VIDEO_UNKNOWN;
}
return VIDEO_NO_ERROR;
@ -505,7 +384,7 @@ static int handle_video_ctl_cs_req(uint8_t rhport, uint8_t stage, tusb_control_r
}
break;
case VIDEO_VC_CTL_REQUEST_ERROR_CODE:
switch (p_request->bRequest) {
switch (request->bRequest) {
case VIDEO_REQUEST_GET_CUR:
if (stage == CONTROL_STAGE_SETUP) {
TU_LOG2(" Get Error Code\r\n");
@ -516,7 +395,7 @@ static int handle_video_ctl_cs_req(uint8_t rhport, uint8_t stage, tusb_control_r
case VIDEO_REQUEST_GET_INFO:
if (stage == CONTROL_STAGE_SETUP) {
TU_LOG2(" Get Info Error Code\r\n");
if (tud_control_xfer(rhport, request, &_cap_get, sizeof(_cap_get)))
if (tud_control_xfer(rhport, request, (uint8_t*)&_cap_get, sizeof(_cap_get)))
return VIDEO_UNKNOWN;
}
return VIDEO_NO_ERROR;
@ -532,14 +411,17 @@ static int handle_video_ctl_cs_req(uint8_t rhport, uint8_t stage, tusb_control_r
static int handle_video_ctl_req(uint8_t rhport, uint8_t stage, tusb_control_request_t const *request, unsigned itf)
{
switch (p_request->bmRequestType_bit.type) {
unsigned entity_id;
switch (request->bmRequestType_bit.type) {
case TUSB_REQ_TYPE_STANDARD:
return handle_video_ctl_std_req(rhport, stage, request, itf);
case TUSB_REQ_TYPE_CLASS:
if (!TU_U16_HIGH(request->wIndex)) {
entity_id = TU_U16_HIGH(request->wIndex);
if (!entity_id) {
return handle_video_ctl_cs_req(rhport, stage, request, itf);
} else {
/* TODO: */
if (!_find_desc_entity(_get_desc_vc(&_videod_itf[itf]), entity_id))
return VIDEO_INVALID_REQUEST;
return VIDEO_INVALID_REQUEST;
}
default:
@ -549,16 +431,27 @@ static int handle_video_ctl_req(uint8_t rhport, uint8_t stage, tusb_control_requ
static int handle_video_stm_std_req(uint8_t rhport, uint8_t stage, tusb_control_request_t const *request, unsigned itf)
{
switch (p_request->bRequest) {
unsigned itfnum;
switch (request->bRequest) {
case TUSB_REQ_GET_INTERFACE:
handle_video_ctl_std_req_get_itf(rhport, stage, request, itf);
case TUSB_REQ_SET_INTERFACE:
videod_interface_t *self = &_videod_itf[itf];
unsigned itfnum = tu_u16_low(p_request->wIndex);
if (stage != CONTROL_STAGE_SETUP) return VIDEO_NO_ERROR;
if (_set_vs_itf(rhport, self, itfnum, request->wValue))
TU_VERIFY(1 == request->wLength, VIDEO_UNKNOWN);
itfnum = tu_u16_low(request->wIndex);
tusb_desc_vs_itf_t const *vs = _get_desc_vs(&_videod_itf[itf], itfnum);
if (!vs) return VIDEO_UNKNOWN;
if (tud_control_xfer(rhport, request,
(void*)&vs->std.bAlternateSetting,
sizeof(vs->std.bAlternateSetting)))
return VIDEO_NO_ERROR;
return VIDEO_UNKNOWN;
case TUSB_REQ_SET_INTERFACE:
if (stage != CONTROL_STAGE_SETUP) return VIDEO_NO_ERROR;
itfnum = tu_u16_low(request->wIndex);
if (!_close_vs_itf(rhport, &_videod_itf[itf], itfnum))
return VIDEO_UNKNOWN;
if (!_open_vs_itf(rhport, &_videod_itf[itf], itfnum, request->wValue))
return VIDEO_UNKNOWN;
return VIDEO_NO_ERROR;
default: /* Unknown/Unsupported request */
TU_BREAKPOINT();
return VIDEO_INVALID_REQUEST;
@ -567,56 +460,52 @@ static int handle_video_stm_std_req(uint8_t rhport, uint8_t stage, tusb_control_
static int handle_video_stm_cs_req(uint8_t rhport, uint8_t stage, tusb_control_request_t const *request, unsigned itf)
{
videod_interface_t *self = &_videod_itf[i];
// videod_interface_t *self = &_videod_itf[itf];
(void)rhport; (void)stage; (void)itf;
/* 4.2.1 Interface Control Request */
switch (TU_U16_HIGH(request->wValue)) {
case VIDEO_VS_CTL_PROBE:
switch (p_request->bRequest) {
TU_LOG2(" Probe ");
switch (request->bRequest) {
case VIDEO_REQUEST_SET_CUR:
if (stage == CONTROL_STAGE_SETUP) {
TU_LOG2(" Set Power Mode\r\n");
TU_VERIFY(1 == request->wLength, VIDEO_UNKNOWN);
if (!tud_control_xfer(rhport, request, &self->power_mode, sizeof(self->power_mode)))
return VIDEO_UNKNOWN;
} else if (stage == CONTROL_STAGE_ACK) {
if (tud_video_power_mode_cb) return tud_video_power_mode_cb(itf, &self->power_mode);
}
return VIDEO_NO_ERROR;
TU_LOG2("Set\r\n");
return VIDEO_UNKNOWN;
case VIDEO_REQUEST_GET_CUR:
if (stage == CONTROL_STAGE_SETUP) {
TU_LOG2(" Get Power Mode\r\n");
TU_VERIFY(1 == request->wLength, VIDEO_UNKNOWN);
if (!tud_control_xfer(rhport, request, &self->power_mode, sizeof(self->power_mode)))
return VIDEO_UNKNOWN;
}
return VIDEO_NO_ERROR;
TU_LOG2("Get\r\n");
return VIDEO_UNKNOWN;
case VIDEO_REQUEST_GET_MIN:
TU_LOG2("Get Min\r\n");
return VIDEO_UNKNOWN;
case VIDEO_REQUEST_GET_MAX:
TU_LOG2("Get Man\r\n");
return VIDEO_UNKNOWN;
case VIDEO_REQUEST_GET_RES:
TU_LOG2("Get Res\r\n");
return VIDEO_UNKNOWN;
case VIDEO_REQUEST_GET_DEF:
TU_LOG2("Get Def\r\n");
return VIDEO_UNKNOWN;
case VIDEO_REQUEST_GET_LEN:
TU_LOG2("Get Len\r\n");
return VIDEO_UNKNOWN;
case VIDEO_REQUEST_GET_INFO:
if (stage == CONTROL_STAGE_SETUP) {
TU_LOG2(" Get Info Power Mode\r\n");
TU_VERIFY(1 == request->wLength, VIDEO_UNKNOWN);
if (!tud_control_xfer(rhport, request, &_cap_get_set, sizeof(_cap_get_set)))
return VIDEO_UNKNOWN;
}
return VIDEO_NO_ERROR;
TU_LOG2("Get Info\r\n");
return VIDEO_UNKNOWN;
default: break;
}
break;
case VIDEO_VS_CTL_COMMIT:
switch (p_request->bRequest) {
TU_LOG2(" Commit ");
switch (request->bRequest) {
case VIDEO_REQUEST_SET_CUR:
TU_LOG2("Set\r\n");
return VIDEO_UNKNOWN;
case VIDEO_REQUEST_GET_CUR:
if (stage == CONTROL_STAGE_SETUP) {
TU_LOG2(" Get Error Code\r\n");
if (!tud_control_xfer(rhport, request, &self->error_code, sizeof(self->error_code)))
return VIDEO_UNKNOWN;
}
return VIDEO_NO_ERROR;
TU_LOG2("Get\r\n");
return VIDEO_UNKNOWN;
case VIDEO_REQUEST_GET_INFO:
if (stage == CONTROL_STAGE_SETUP) {
TU_LOG2(" Get Info Error Code\r\n");
if (tud_control_xfer(rhport, request, &_cap_get, sizeof(_cap_get)))
return VIDEO_UNKNOWN;
}
return VIDEO_NO_ERROR;
TU_LOG2("Get Info\r\n");
return VIDEO_UNKNOWN;
default: break;
}
break;
@ -629,7 +518,7 @@ static int handle_video_stm_cs_req(uint8_t rhport, uint8_t stage, tusb_control_r
static int handle_video_stm_req(uint8_t rhport, uint8_t stage, tusb_control_request_t const *request, unsigned itf)
{
switch (p_request->bmRequestType_bit.type) {
switch (request->bmRequestType_bit.type) {
case TUSB_REQ_TYPE_STANDARD:
return handle_video_stm_std_req(rhport, stage, request, itf);
case TUSB_REQ_TYPE_CLASS:
@ -642,40 +531,14 @@ static int handle_video_stm_req(uint8_t rhport, uint8_t stage, tusb_control_requ
return VIDEO_UNKNOWN;
}
static void _prep_out_transaction(cdcd_interface_t* p_cdc)
{
uint8_t const rhport = TUD_OPT_RHPORT;
uint16_t available = tu_fifo_remaining(&p_cdc->rx_ff);
// Prepare for incoming data but only allow what we can store in the ring buffer.
// TODO Actually we can still carry out the transfer, keeping count of received bytes
// and slowly move it to the FIFO when read().
// This pre-check reduces endpoint claiming
TU_VERIFY(available >= sizeof(p_cdc->epout_buf), );
// claim endpoint
TU_VERIFY(usbd_edpt_claim(rhport, p_cdc->ep_out), );
// fifo can be changed before endpoint is claimed
available = tu_fifo_remaining(&p_cdc->rx_ff);
if ( available >= sizeof(p_cdc->epout_buf) )
{
usbd_edpt_xfer(rhport, p_cdc->ep_out, p_cdc->epout_buf, sizeof(p_cdc->epout_buf));
}else
{
// Release endpoint since we don't make any transfer
usbd_edpt_release(rhport, p_cdc->ep_out);
}
}
//--------------------------------------------------------------------+
// APPLICATION API
//--------------------------------------------------------------------+
bool tud_video_n_connected(uint8_t itf)
{
(void)itf;
// DTR (bit 0) active is considered as connected
return tud_ready() && tu_bit_test(_cdcd_itf[itf].line_state, 0);
return tud_ready();
}
//--------------------------------------------------------------------+
@ -695,7 +558,7 @@ void videod_init(void)
for (unsigned i = 0; i < CFG_TUD_VIDEO; ++i)
{
videod_interface_t* p_video = &_videod_itf[i];
// videod_interface_t* p_video = &_videod_itf[i];
// TODO
}
@ -716,14 +579,14 @@ void videod_reset(uint8_t rhport)
uint16_t videod_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t max_len)
{
TU_VERIFY(TUSB_CLASS_VIDEO == itf_desc->bInterfaceClass &&
VIDEO_SUBCLASS_CONTROL == itf_desc->bInterfaceSubClass &&
VIDEO_INT_PROTOCOL_CODE_15 == itf_desc->bFunctionProtool, 0);
TU_VERIFY((TUSB_CLASS_VIDEO == itf_desc->bInterfaceClass) &&
(VIDEO_SUBCLASS_CONTROL == itf_desc->bInterfaceSubClass) &&
(VIDEO_INT_PROTOCOL_CODE_15 == itf_desc->bInterfaceProtocol), 0);
/* Find available interface */
videod_interface_t *self = NULL;
for (unsigned i = 0; i < CFG_TUD_VIDEO; ++i) {
if (!_videod_itf[i].vc) {
if (!_videod_itf[i].beg) {
self = &_videod_itf[i];
break;
}
@ -758,24 +621,23 @@ uint16_t videod_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uin
bool videod_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_request_t const * request)
{
int err;
if (p_request->bmRequestType_bit.recipient != TUSB_REQ_RCPT_INTERFACE) {
if (request->bmRequestType_bit.recipient != TUSB_REQ_RCPT_INTERFACE) {
return false;
}
unsigned itfnum = tu_u16_low(p_request->wIndex);
unsigned itfnum = tu_u16_low(request->wIndex);
/* Identify which interface to use */
int itf;
tusb_desc_vc_itf_t const *vc = NULL;
for (itf = 0; itf < CFG_TUD_VIDEO; ++itf) {
vc = _videod_itf[itf].vc;
if (!vc) continue;
unsigned beg_itfnum = vc->bInterfaceNumber;
vc = _get_desc_vc(&_videod_itf[itf]);
unsigned beg_itfnum = vc->std.bInterfaceNumber;
unsigned end_itfnum = vc->ctl.bInCollection;
if (beg_itfnum <= itfnum && itfnum < end_itfnum)
break;
}
if (itf == CFG_TUD_VIDEO) return false;
if (itfnum == vc->bInterfaceNumber) {
if (itfnum == vc->std.bInterfaceNumber) {
/* To video control interface */
err = handle_video_ctl_req(rhport, stage, request, itf);
} else {
@ -789,68 +651,8 @@ bool videod_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_request_
bool videod_xfer_cb(uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes)
{
(void) result;
uint8_t itf;
videod_interface_t* p_video;
// Identify which interface to use
for (itf = 0; itf < CFG_TUD_CDC; itf++)
{
p_video = &_videod_itf[itf];
if ( ( ep_addr == p_video->ep_out ) || ( ep_addr == p_video->ep_in ) ) break;
}
TU_ASSERT(itf < CFG_TUD_CDC);
// Received new data
if ( ep_addr == p_video->ep_out )
{
tu_fifo_write_n(&p_video->rx_ff, &p_video->epout_buf, xferred_bytes);
// Check for wanted char and invoke callback if needed
if ( tud_cdc_rx_wanted_cb && (((signed char) p_video->wanted_char) != -1) )
{
for ( uint32_t i = 0; i < xferred_bytes; i++ )
{
if ( (p_video->wanted_char == p_video->epout_buf[i]) && !tu_fifo_empty(&p_video->rx_ff) )
{
tud_cdc_rx_wanted_cb(itf, p_video->wanted_char);
}
}
}
// invoke receive callback (if there is still data)
if (tud_cdc_rx_cb && !tu_fifo_empty(&p_video->rx_ff) ) tud_cdc_rx_cb(itf);
// prepare for OUT transaction
_prep_out_transaction(p_video);
}
// Data sent to host, we continue to fetch from tx fifo to send.
// Note: This will cause incorrect baudrate set in line coding.
// Though maybe the baudrate is not really important !!!
if ( ep_addr == p_video->ep_in )
{
// invoke transmit callback to possibly refill tx fifo
if ( tud_cdc_tx_complete_cb ) tud_cdc_tx_complete_cb(itf);
if ( 0 == tud_cdc_n_write_flush(itf) )
{
// If there is no data left, a ZLP should be sent if
// xferred_bytes is multiple of EP Packet size and not zero
if ( !tu_fifo_count(&p_video->tx_ff) && xferred_bytes && (0 == (xferred_bytes & (BULK_PACKET_SIZE-1))) )
{
if ( usbd_edpt_claim(rhport, p_video->ep_in) )
{
usbd_edpt_xfer(rhport, p_video->ep_in, NULL, 0);
}
}
}
}
// nothing to do with notif endpoint for now
return true;
(void)rhport; (void)ep_addr; (void)result; (void)xferred_bytes;
return false;
}
#endif

View File

@ -46,6 +46,8 @@ TU_ATTR_WEAK bool tud_video_set_cur_cb(uint8_t rhport, tusb_control_request_t co
// Invoked when GET_CUR request received
TU_ATTR_WEAK bool tud_video_get_cur_cb(uint8_t rhport, tusb_control_request_t const *request);
/* @return video_error_code_t */
TU_ATTR_WEAK int tud_video_power_mode_cb(unsigned itf, uint8_t power_mod);
//--------------------------------------------------------------------+
// INTERNAL USBD-CLASS DRIVER API
//--------------------------------------------------------------------+