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cleanup open()

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This commit is contained in:
kkitayam 2021-07-19 21:28:05 +09:00
parent 97d5d1e491
commit e8de411322
3 changed files with 358 additions and 125 deletions
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20
src/class/video/video.h
View File

@ -103,6 +103,14 @@ typedef enum
VIDEO_REQUEST_GET_DEF_ALL = 0x97
} video_control_request_t;
/* A.9 */
typedef enum
{
VIDEO_CTL_SEL_UNDEF = 0x00,
VIDEO_CTL_SEL_VIDEO_POWER_MODE_CONTROL,
VIDEO_CTL_SEL_REQUEST_ERROR_CODE_CONTROL,
} video_interface_control_selector_t;
/* B. Terminal Types */
typedef enum
{
@ -130,7 +138,7 @@ typedef struct TU_ATTR_PACKED {
uint32_t dwClockFrequency;
uint8_t bInCollection;
uint8_t baInterfaceNr[];
} tusb_desc_video_control_interface_t;
} tusb_desc_cs_video_ctl_itf_hdr_t;
/* 3.9.2.1 */
typedef struct TU_ATTR_PACKED {
@ -147,7 +155,7 @@ typedef struct TU_ATTR_PACKED {
uint8_t bTriggerUsage;
uint8_t bControlSize;
uint8_t bmaControls[];
} tusb_desc_video_streaming_interface_input_t;
} tusb_desc_cs_video_stm_itf_in_hdr_t;
/* 3.9.2.2 */
typedef struct TU_ATTR_PACKED {
@ -160,7 +168,7 @@ typedef struct TU_ATTR_PACKED {
uint8_t bTerminalLink;
uint8_t bControlSize;
uint8_t bmaControls[];
} tusb_desc_video_streaming_interface_output_t;
} tusb_desc_cs_video_stm_itf_out_hdr_t;
typedef struct TU_ATTR_PACKED {
uint8_t bLength;
@ -178,14 +186,14 @@ typedef struct TU_ATTR_PACKED {
uint8_t bTriggerUsage;
uint8_t bControlSize;
uint8_t bmaControls[];
} in;
} input;
struct {
uint8_t bEndpointAddress;
uint8_t bTerminalLink;
uint8_t bControlSize;
uint8_t bmaControls[];
} out;
} tusb_desc_video_streaming_interface_t;
} output;
} tusb_desc_cs_video_stm_itf_hdr_t;
#define TUD_VIDEO_DESC_IAD_LEN 8
#define TUD_VIDEO_DESC_STD_VC_LEN 9

450
src/class/video/video_device.c
View File

@ -38,16 +38,38 @@
//--------------------------------------------------------------------+
// MACRO CONSTANT TYPEDEF
//--------------------------------------------------------------------+
typedef struct {
uint8_t num;
uint8_t alt;
} itf_setting_t;
typedef struct {
tusb_desc_interface_t std;
tusb_desc_cs_video_ctl_itf_hdr_t ctl;
} tusb_desc_vc_itf_t;
typedef struct {
tusb_desc_interface_t std;
tusb_desc_cs_video_stm_itf_hdr_t stm;
} tusb_desc_vs_itf_t;
typedef struct TU_ATTR_PACKED {
uint8_t bLength;
uint8_t bDescriptorType;
uint8_t bDescriptorSubtype;
union {
uint8_t bId;
uint8_t bTerminalId;
uint8_t bUnitId;
};
} tusb_desc_cs_video_entity_itf_t;
typedef struct
{
uint8_t itf_ctl;
uint8_t itf_in;
uint8_t itf_out;
uint8_t const *desc_beg;
uint8_t const *desc_end;
tusb_desc_video_control_interface_t const *ctl;
tusb_desc_video_streaming_interface_input_t const *stm_in;
tusb_desc_video_streaming_interface_output_t const *stm_out;
void const *beg;
void const *end;
tusb_desc_vc_itf_t const *vc; /* current video control interface */
tusb_desc_vs_itf_t const *vs[2]; /* current video streaming interfaces */
uint8_t ep_notif; /* notification */
uint8_t ep_in; /* video IN */
uint8_t ep_sti; /* still image IN */
@ -68,24 +90,266 @@ typedef struct
//--------------------------------------------------------------------+
CFG_TUSB_MEM_SECTION static videod_interface_t _videod_itf[CFG_TUD_VIDEO];
static tusb_desc_interface_t const* videod_next_interface_desc(void const *beg, void const *end)
/** Find the first descriptor with the specified descriptor type.
*
* @param[in] beg The head of descriptor byte array.
* @param[in] end The tail of descriptor byte array.
* @param[in] target The target descriptor type.
*
* @return The pointer for interface descriptor.
* @retval end did not found interface descriptor */
static void const* videod_find_desc(void const *beg, void const *end, uint8_t target)
{
for (void const *cur = tu_desc_next(beg); cur < end; cur = tu_desc_next(cur)) {
if (TUSB_DESC_INTERFACE != tu_desc_type(cur))
for (void const *cur = beg; cur < end; cur = tu_desc_next(cur)) {
if (target != tu_desc_type(cur))
return (uint8_t const*)cur;
}
return end;
}
static tusb_desc_interface_t const* videod_find_interface_desc(void const *beg, void const *end, unsigned itfnum)
/** Find the first interface descriptor with the specified interface number and alternate setting number.
*
* @param[in] beg The head of descriptor byte array.
* @param[in] end The tail of descriptor byte array.
* @param[in] itfnum The target interface number.
* @param[in] altnum The target alternate setting number.
*
* @return The pointer for interface descriptor.
* @retval end did not found interface descriptor */
static void const* videod_find_desc_itf(void const *beg, void const *end, unsigned itfnum, unsigned altnum)
{
tusb_desc_interface_t const *cur = (tusb_desc_interface_t const *)beg;
for (; cur; cur = videod_next_interface_desc(cur, end)) {
if (cur->bInterfaceNumber == itfnum)
return cur;
for (void const *cur = beg; cur < end; cur = videod_find_desc(cur, end, TUSB_DESC_INTERFACE)) {
tusb_desc_interface_t const *itf = (tusb_desc_interface_t const *)cur;
if (itf->bInterfaceNumber == itfnum && itf->bAlternateSettings == altnum) {
return itf;
}
cur = tu_desc_next(cur);
}
return end;
}
/** Find the first input or output terminal descriptor with the specified terminal id.
*
* @param[in] beg The head of descriptor byte array.
* @param[in] end The tail of descriptor byte array.
* @param[in] termid The target terminal id.
*
* @return The pointer for interface descriptor.
* @retval end did not found interface descriptor */
static void const* videod_find_desc_term(void const *beg, void const *end, unsigned termid)
{
for (void const *cur = beg; cur < end; cur = videod_find_desc(cur, end, TUSB_DESC_CS_INTERFACE)) {
tusb_desc_cs_video_entity_itf_t const *itf = (tusb_desc_cs_video_entity_itf_t const *)cur;
if ((VIDEO_CS_VC_INTERFACE_INPUT_TERMINAL == itf->bDescriptorSubtype ||
VIDEO_CS_VC_INTERFACE_OUTPUT_TERMINAL == itf->bDescriptorSubtype) &&
itf->bTerminalId == termid) {
return itf;
}
cur = tu_desc_next(cur);
}
return end;
}
/** Find the first selector/processing/extension/encoding unit descriptor with the specified unit id.
*
* @param[in] beg The head of descriptor byte array.
* @param[in] end The tail of descriptor byte array.
* @param[in] unitid The target unit id.
*
* @return The pointer for interface descriptor.
* @retval end did not found interface descriptor */
static void const* videod_find_desc_unit(void const *beg, void const *end, unsigned unitid)
{
for (void const *cur = beg; cur < end; cur = videod_find_desc(cur, end, TUSB_DESC_CS_INTERFACE)) {
tusb_desc_cs_video_entity_itf_t const *itf = (tusb_desc_cs_video_entity_itf_t const *)cur;
if (VIDEO_CS_VC_INTERFACE_SELECTOR_UNIT <= itf->bDescriptorSubtype &&
itf->bDescriptorSubtype <= VIDEO_CS_VC_INTERFACE_ENCODING_UNIT &&
itf->bUnitId == unitid) {
return itf;
}
cur = tu_desc_next(cur);
}
return end;
}
/** Set the specified alternate setting to own video control interface.
*
* @param[in,out] self The context.
* @param[in] altnum The target alternate setting number.
*
* @return The next descriptor after the video control interface descriptor.
* @retval NULL did not found interface descriptor or alternate setting */
static void const* videod_set_vc_itf(videod_interface_t *self, unsigned altnum)
{
void const *beg = self->beg;
void const *end = self->end;
/* The head descriptor is a video control interface descriptor. */
unsigned itfnum = ((tusb_desc_interface_t const *)beg)->bInterfaceNumber;
void const *cur = videod_find_desc_itf(beg, end, itfnum, altnum);
TU_VERIFY(cur < end, NULL);
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, NULL);
/* 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, NULL);
/* Find the notification endpoint descriptor. */
cur = videod_find_desc(cur, end, TUSB_DESC_ENDPOINT);
TU_VERIFY(cur < end, NULL);
tusb_desc_endpoint_t const *notif = (tusb_desc_endpoint_t const *)cur;
/* Open the notification endpoint */
TU_ASSERT(usbd_edpt_open(rhport, notif), NULL);
self->ep_notif = notif->bEndpointAddress;
}
self->vc = vc;
return end;
}
/** 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.
*
* @return The next descriptor after the video control interface descriptor.
* @retval NULL did not found interface descriptor or alternate setting */
static void const* videod_set_vs_itf(videod_interface_t *self, unsigned itfnum, unsigned altnum)
{
unsigned i;
tusb_desc_vc_itf_t const *vc = self->vc;
void const *end = self->end;
/* 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 = self->vc->ctl.bInCollection;
for (i = 0; (i < bInCollection) && (vc->ctl.baInterfaceNr[i] != itfnum); ++i) ;
TU_VERIFY(i < bInCollection, NULL);
cur = videod_find_desc_itf(cur, end, itfnum, altnum);
TU_VERIFY(cur < end, NULL);
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 end;
case VIDEO_CS_VS_INTERFACE_INPUT_HEADER:
/* Support for up to 2 endpoint only. */
TU_VERIFY(vc->std.bNumEndpoints < 3, NULL);
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 = videod_find_desc(cur, end, TUSB_DESC_ENDPOINT);
TU_VERIFY(cur < end, NULL);
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, NULL);
TU_ASSERT(usbd_edpt_open(rhport, ep), NULL);
self->ep_in = ep->bEndpointAddress;
} else {
/* still image input endpoint */
TU_ASSERT(!self->ep_sti, NULL);
TU_ASSERT(usbd_edpt_open(rhport, ep), NULL);
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, NULL);
if (self->ep_out) {
usbd_edpt_close(rhport, self->ep_out);
self->ep_out = 0;
}
if (vs->std.bNumEndpoints) {
cur = videod_find_desc(cur, end, TUSB_DESC_ENDPOINT);
TU_VERIFY(cur < end, NULL);
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), NULL);
self->ep_out = ep->bEndpointAddress;
}
}
break;
}
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->vs[i] = vs;
return end;
}
}
return NULL;
}
static bool videod_get_itf(uint8_t rhport, videod_interface_t *self, tusb_control_request_t const * request)
{
unsigned altnum = tu_u16_low(p_request->wValue);
unsigned itfnum = tu_u16_low(p_request->wLength);
tusb_desc_vc_itf_t const *vc = self->vc;
if (vc->std.bInterfaceNumber == itfnum) {
tud_control_xfer(rhport, request, &vc->std.bAlternateSettings, sizeof(vc->std.bAlternateSettings));
return true;
}
for (unsigned i = 0; i < vc->ctl.bInCollection; ++i) {
tusb_desc_vs_itf_t const *vs = self->vs[i];
if (!vs || vs->std.bInterfaceNumber == itfnum) {
continue;
}
tud_control_xfer(rhport, request, &vs->std.bAlternateSettings, sizeof(vs->std.bAlternateSettings));
return true;
}
return false;
}
static bool videod_set_itf(uint8_t rhport, videod_interface_t *self, tusb_control_request_t const * request)
{
(void)rhport;
unsigned altnum = tu_u16_low(p_request->wValue);
unsigned itfnum = tu_u16_low(p_request->wLength);
tusb_desc_vc_itf_t const *vc = self->vc;
if (vc->std.bInterfaceNumber == itfnum) {
if (videod_set_vc_itf(self, altnum))
return true;
return false;
}
for (unsigned i = 0; i < vc->ctl.bInCollection; ++i) {
tusb_desc_vs_itf_t const *vs = self->vs[i];
if (!vs || vs->std.bInterfaceNumber == itfnum) {
continue;
}
if (videod_set_vs_itf(self, itfnum, altnum))
return true;
return false;
}
return false;
}
static void _prep_out_transaction (cdcd_interface_t* p_cdc)
{
uint8_t const rhport = TUD_OPT_RHPORT;
@ -165,85 +429,43 @@ uint16_t videod_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uin
VIDEO_INT_PROTOCOL_CODE_15 == itf_desc->bFunctionProtool, 0);
/* Find available interface */
videod_interface_t *p_video = NULL;
for (unsigned video_id = 0; video_id < CFG_TUD_VIDEO; ++video_id) {
if (!_videod_itf[video_id].itf_in && !_videod_itf[video_id].itf_out) {
p_video = &_videod_itf[video_id];
videod_interface_t *self = NULL;
for (unsigned i = 0; i < CFG_TUD_VIDEO; ++i) {
if (!_videod_itf[i].vc) {
self = &_videod_itf[i];
break;
}
}
TU_ASSERT(p_video, 0);
TU_ASSERT(self, 0);
void const *end = (void const*)itf_desc + max_len;
self->beg = itf_desc;
self->end = end;
/*------------- Video Control Interface -------------*/
TU_VERIFY(itf_desc->bNumEndpoints < 2, 0); /* support only 1 notification endpoint */
unsigned itf_ctl = itf_desc->bInterfaceNumber;
unsigned drv_len = sizeof(*itf_desc);
tusb_desc_endpoint_t const * desc_ep = NULL;
uint8_t const *p_desc = tu_desc_next(itf_desc);
tusb_desc_video_control_interface_t const *ctl = (tusb_desc_video_control_interface_t const*)p_desc;
TU_VERIFY(TUSB_DESC_CS_INTERFACE == ctl->bDescriptorType &&
VIDEO_CS_VC_INTERFACE_HEADER == ctl->bDescriptorSubType, 0);
if (itf_desc->bNumEndpoints) { /* has a notification endpoint */
p_desc = tu_desc_next(ctl);
/* skip to the notification endpoint descriptor */
while (TUSB_DESC_ENDPOINT != tu_desc_type(p_desc) && drv_len <= max_len ) {
p_desc = tu_desc_next(p_desc);
}
desc_ep = (tusb_desc_endpoint_t const *)p_desc;
}
drv_len += tu_desc_len(ctl) + ctl->wTotalLength;
p_desc = tu_desc_next(ctl) + ctl->wTotalLength;
TU_VERIFY(drv_len <= max_len, 0);
void const* cur = videod_set_vc_itf(self, 0);
TU_VERIFY(cur, 0);
unsigned bInCollection = self->vc->ctl.bInCollection;
/*------------- Video Stream Interface -------------*/
uint8_t itf_in = 0, itf_out = 0;
tusb_desc_video_streaming_interface_input_t const *stm_in = NULL;
tusb_desc_video_streaming_interface_output_t const *stm_out = NULL;
unsigned itfnum = 0;
for (unsigned i = 0; i < bInCollection; ++i) {
itfnum = vc->ctl.baInterfaceNr[i];
cur = videod_set_vs_itf(self, itfnum, 0);
TU_VERIFY(cur, 0);
}
for (unsigned itf_stm = 0; itf_stm < ctl->bInCollection; ++itf_stm) {
itf_desc = (tusb_desc_interface_t const *)p_desc;
TU_VERIFY(TUSB_DESC_INTERFACE == itf_desc->bDescriptorType &&
0 == itf_desc->bInterfaceNumber &&
TUSB_CLASS_VIDEO == itf_desc->bInterfaceClass &&
VIDEO_SUBCLASS_STREAMING == itf_desc->bInterfaceSubClass &&
VIDEO_INT_PROTOCOL_CODE_15 == itf_desc->bFunctionProtool &&
0 == itf_desc->bNumEndpoints, 0);
drv_len += sizeof(*itf_desc);
p_desc = tu_desc_next(itf_desc);
TU_VERIFY(TUSB_DESC_CS_INTERFACE == tu_desc_type(p_desc));
tusb_desc_video_streaming_interface_t const *stm = (tusb_desc_video_streaming_interface_t const *)p_desc;
TU_VERIFY(TUSB_DESC_CS_INTERFACE == stm->bDescriptorType);
switch (stm->bDescriptorSubType) {
default: return 0;
case VIDEO_CS_VS_INTERFACE_INPUT_HEADER:
TU_VERIFY(0 == itf_in, 0);
itf_in = itf_desc->bInterfaceNumber;
stm_in = (tusb_desc_video_streaming_interface_input_t const*)stm;
break;
case VIDEO_CS_VS_INTERFACE_OUTPUT_HEADER:
TU_VERIFY(0 == itf_out, 0);
itf_out = itf_desc->bInterfaceNumber;
stm_out = (tusb_desc_video_streaming_interface_output_t const*)stm;
/* Skip alternate setting interfaces */
while (cur < end && TUSB_DESC_INTERFACE == tu_desc_type(cur)) {
tusb_desc_vs_itf_t const *vs = (tusb_desc_vs_itf_t const *)cur;
if (itfnum != vs->std.bInterfaceNumber ||
TUSB_DESC_CS_INTERFACE != vs->stm.bDescriptorType ||
(VIDEO_CS_VS_INTERFACE_INPUT_HEADER != vs->stm.bDescriptorSubType &&
VIDEO_CS_VS_INTERFACE_OUTPUT_HEADER!= vs->stm.bDescriptorSubType)) {
break;
}
drv_len += tu_desc_len(stm) + stm->wTotalLength;
p_desc = tu_desc_next(stm) + ctl->wTotalLength;
cur += itf->std.bLength + itf->stm.bLength + itf->stm.wTotalLength;
}
if (desc_ep) {
/* open the notification endpoint */
TU_ASSERT( usbd_edpt_open(rhport, desc_ep), 0);
p_video->ep_notif = desc_ep->bEndpointAddress;
}
p_video->itf_ctl = itf_ctl;
p_video->itf_in = itf_in;
p_video->itf_out = itf_out;
p_video->ctl = ctl;
p_video->stm_in = stm_in;
p_video->stm_out = stm_out;
return drv_len;
self->end = cur;
return end - cur;
}
// Invoked when a control transfer occurred on an interface of this class
@ -251,43 +473,37 @@ uint16_t videod_open(uint8_t rhport, tusb_desc_interface_t const * itf_desc, uin
// return false to stall control endpoint (e.g unsupported request)
bool videod_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_request_t const * request)
{
if (p_request->bmRequestType_bit.recipient != TUSB_REQ_RCPT_INTERFACE) {
return false;
}
unsigned itfnum = tu_u16_low(p_request->wIndex);
/* Identify which interface to use */
videod_interface_t *self = NULL;
for (unsigned i = 0; i < CFG_TUD_VIDEO; ++i) {
if (_videod_itf[i].vc->bInterfaceNumber == itfnum) {
self = &_videod_itf[i];
break;
}
}
if (!self) return false;
/* Standard request */
if (p_request->bmRequestType_bit.type == TUSB_REQ_TYPE_STANDARD) {
tusb_desc_interface_t const *itf;
unsigned itf;
if (stage != CONTROL_STAGE_SETUP) return true;
switch (p_request->bRequest) {
case TUSB_REQ_GET_INTERFACE:
itf = tu_u16_low(p_request->wIndex);
return audiod_get_interface(rhport, p_request);
return videod_get_itf(rhport, self, request);
case TUSB_REQ_SET_INTERFACE:
itf = videod_find_interface_desc(void const *beg, void const *end, unsigned itfnum)
itf = tu_u16_low(p_request->wIndex);
return audiod_set_interface(rhport, p_request);
/* Unknown/Unsupported request */
default: TU_BREAKPOINT(); return false;
return videod_set_itf(rhport, self, request);
default: /* Unknown/Unsupported request */
TU_BREAKPOINT();
return false;
}
}
uint8_t itf = 0;
videod_interface_t* p_video = _videod_itf;
unsigned cs = TU_U16_HIGH(request->wValue);
unsigned uid = TU_U16_HIGH(request->wIndex);
// Identify which interface to use
for ( ; ; itf++, p_video++) {
if (itf >= TU_ARRAY_SIZE(_videod_itf)) return false;
if ( p_video->itf_num == request->wIndex ) break;
}
if (stage == CONTROL_STAGE_SETUP) {
TU_VERIFY((TUSB_DIR_IN_MASK & request->bmRequestType) ==
(TUSB_DIR_IN_MASK & request->bRequest));
}
unsigned cs = TU_U16_HIGH(request->wValue);
unsigned req = request->bRequest;
switch (request->bRequest) {
case VIDEO_REQUEST_GET_INFO:
TU_VERIFY(1 == request->wLength);
@ -295,16 +511,16 @@ bool videod_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_request_
break;
case VIDEO_REQUEST_SET_CUR:
if (stage == CONTROL_STAGE_SETUP) {
TU_LOG2(" Set Current Setting Attribute\r\n");
tud_control_xfer(rhport, request, &p_video->line_coding, sizeof(cdc_line_coding_t));
TU_LOG2(" Set Current Setting Attribute\r\n");
tud_control_xfer(rhport, request, &p_video->line_coding, sizeof(cdc_line_coding_t));
} else if ( stage == CONTROL_STAGE_ACK) {
if ( tud_cdc_line_coding_cb ) tud_cdc_line_coding_cb(itf, &p_video->line_coding);
}
break;
case VIDEO_REQUEST_GET_CUR:
if (stage == CONTROL_STAGE_SETUP) {
TU_LOG2(" Set Current Setting Attribute\r\n");
tud_control_xfer(rhport, request, &p_video->line_coding, sizeof(cdc_line_coding_t));
TU_LOG2(" Set Current Setting Attribute\r\n");
tud_control_xfer(rhport, request, &p_video->line_coding, sizeof(cdc_line_coding_t));
} else if ( stage == CONTROL_STAGE_ACK) {
if ( tud_cdc_line_coding_cb ) tud_cdc_line_coding_cb(itf, &p_video->line_coding);
}

13
src/class/video/video_device.h
View File

@ -28,12 +28,21 @@
#ifndef TUSB_VIDEO_DEVICE_H_
#define TUSB_VIDEO_DEVICE_H_
#include "video_device.h"
#ifdef __cplusplus
extern "C" {
#endif
//--------------------------------------------------------------------+
// Application Callback API (weak is optional)
//--------------------------------------------------------------------+
// Invoked when GET_INFO request received
TU_ATTR_WEAK bool tud_video_get_info_cb(uint8_t rhport, tusb_control_request_t const *request, uint8_t const *itf_desc);
// Invoked when GET_INFO request received
TU_ATTR_WEAK bool tud_video_set_cur_cb(uint8_t rhport, tusb_control_request_t const *request);
// Invoked when GET_CUR request received
TU_ATTR_WEAK bool tud_video_get_info_cb(uint8_t rhport, tusb_control_request_t const *request);
//--------------------------------------------------------------------+
// INTERNAL USBD-CLASS DRIVER API
//--------------------------------------------------------------------+