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fix video payload head toggle

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This commit is contained in:
sakumisu
2022-09-23 21:58:56 +08:00
parent 110d9ba816
commit 0b0f3bfbda
1 changed files with 5 additions and 2 deletions
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7
class/video/usbd_video.c
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@@ -24,6 +24,8 @@ struct usbd_video_cfg_priv {
.info[2] = { .bDescriptorSubtype = VIDEO_VC_PROCESSING_UNIT_DESCRIPTOR_SUBTYPE, .bEntityId = 0x02, .wTerminalType = 0x00 },
};
static bool head_toggle = false;
static int usbd_video_control_request_handler(struct usb_setup_packet *setup, uint8_t **data, uint32_t *len)
{
uint8_t control_selector = (uint8_t)(setup->wValue >> 8);
@@ -694,6 +696,7 @@ static void video_notify_handler(uint8_t event, void *arg)
usbd_video_open(intf->bInterfaceNumber);
} else {
usbd_video_close(intf->bInterfaceNumber);
head_toggle = false;
}
}
@@ -770,7 +773,7 @@ uint32_t usbd_video_mjpeg_payload_fill(uint8_t *input, uint32_t input_len, uint8
for (size_t i = 0; i < packets; i++) {
output[usbd_video_cfg.probe.dwMaxPayloadTransferSize * i] = 0x02;
output[usbd_video_cfg.probe.dwMaxPayloadTransferSize * i + 1] ^= 0x01;
output[usbd_video_cfg.probe.dwMaxPayloadTransferSize * i + 1] = head_toggle;
if (i == (packets - 1)) {
memcpy(&output[2 + usbd_video_cfg.probe.dwMaxPayloadTransferSize * i], &input[picture_pos], last_packet_size - 2);
} else {
@@ -778,7 +781,7 @@ uint32_t usbd_video_mjpeg_payload_fill(uint8_t *input, uint32_t input_len, uint8
picture_pos += usbd_video_cfg.probe.dwMaxPayloadTransferSize - 2;
}
}
head_toggle ^= 1;
*out_len = (input_len + 2 * packets);
return packets;
}