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update midi open()

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This commit is contained in:
hathach
2020-05-28 11:41:37 +07:00
parent 89a3d1f6d1
commit 8f560bf275
2 changed files with 34 additions and 33 deletions
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55
src/class/midi/midi_device.c
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@@ -290,31 +290,30 @@ void midid_reset(uint8_t rhport)
}
}
bool midid_open(uint8_t rhport, tusb_desc_interface_t const * desc_itf, uint16_t *p_length)
uint16_t midid_open(uint8_t rhport, tusb_desc_interface_t const * desc_itf, uint16_t max_len)
{
// 1st Interface is Audio Control v1
TU_VERIFY(TUSB_CLASS_AUDIO == desc_itf->bInterfaceClass &&
AUDIO_SUBCLASS_CONTROL == desc_itf->bInterfaceSubClass &&
AUDIO_PROTOCOL_V1 == desc_itf->bInterfaceProtocol);
AUDIO_PROTOCOL_V1 == desc_itf->bInterfaceProtocol, 0);
uint16_t drv_len = tu_desc_len(desc_itf);
uint8_t const * p_desc = tu_desc_next(desc_itf);
// Skip Class Specific descriptors
while ( TUSB_DESC_CS_INTERFACE == tu_desc_type(p_desc) )
while ( TUSB_DESC_CS_INTERFACE == tu_desc_type(p_desc) && drv_len <= max_len )
{
drv_len += tu_desc_len(p_desc);
p_desc = tu_desc_next(p_desc);
p_desc = tu_desc_next(p_desc);
}
// 2nd Interface is MIDI Streaming
TU_VERIFY(TUSB_DESC_INTERFACE == tu_desc_type(p_desc));
TU_VERIFY(TUSB_DESC_INTERFACE == tu_desc_type(p_desc), 0);
tusb_desc_interface_t const * desc_midi = (tusb_desc_interface_t const *) p_desc;
TU_VERIFY(TUSB_CLASS_AUDIO == desc_midi->bInterfaceClass &&
AUDIO_SUBCLASS_MIDI_STREAMING == desc_midi->bInterfaceSubClass &&
AUDIO_PROTOCOL_V1 == desc_midi->bInterfaceProtocol );
AUDIO_PROTOCOL_V1 == desc_midi->bInterfaceProtocol, 0);
// Find available interface
midid_interface_t * p_midi = NULL;
@@ -327,40 +326,42 @@ bool midid_open(uint8_t rhport, tusb_desc_interface_t const * desc_itf, uint16_t
}
}
p_midi->itf_num = desc_midi->bInterfaceNumber;
p_midi->itf_num = desc_midi->bInterfaceNumber;
// next descriptor
drv_len += tu_desc_len(p_desc);
p_desc = tu_desc_next(p_desc);
p_desc = tu_desc_next(p_desc);
// Find and open endpoint descriptors
uint8_t found_endpoints = 0;
while (found_endpoints < desc_midi->bNumEndpoints)
while ( (found_endpoints < desc_midi->bNumEndpoints) && (drv_len <= max_len) )
{
if ( TUSB_DESC_ENDPOINT == p_desc[DESC_OFFSET_TYPE])
if ( TUSB_DESC_ENDPOINT == tu_desc_type(p_desc) )
{
TU_ASSERT( usbd_edpt_open(rhport, (tusb_desc_endpoint_t const *) p_desc), false);
uint8_t ep_addr = ((tusb_desc_endpoint_t const *) p_desc)->bEndpointAddress;
if (tu_edpt_dir(ep_addr) == TUSB_DIR_IN) {
p_midi->ep_in = ep_addr;
} else {
p_midi->ep_out = ep_addr;
}
TU_ASSERT(usbd_edpt_open(rhport, (tusb_desc_endpoint_t const *) p_desc), 0);
uint8_t ep_addr = ((tusb_desc_endpoint_t const *) p_desc)->bEndpointAddress;
drv_len += p_desc[DESC_OFFSET_LEN];
p_desc = tu_desc_next(p_desc);
found_endpoints += 1;
if (tu_edpt_dir(ep_addr) == TUSB_DIR_IN)
{
p_midi->ep_in = ep_addr;
} else {
p_midi->ep_out = ep_addr;
}
drv_len += tu_desc_len(p_desc);
p_desc = tu_desc_next(p_desc);
found_endpoints += 1;
}
drv_len += p_desc[DESC_OFFSET_LEN];
p_desc = tu_desc_next(p_desc);
drv_len += tu_desc_len(p_desc);
p_desc = tu_desc_next(p_desc);
}
*p_length = drv_len;
// Prepare for incoming data
TU_ASSERT( usbd_edpt_xfer(rhport, p_midi->ep_out, p_midi->epout_buf, CFG_TUD_MIDI_EPSIZE), false);
TU_ASSERT( usbd_edpt_xfer(rhport, p_midi->ep_out, p_midi->epout_buf, CFG_TUD_MIDI_EPSIZE), 0 );
return true;
return drv_len;
}
bool midid_control_complete(uint8_t rhport, tusb_control_request_t const * p_request)