/* $OpenBSD: uvideo.c,v 1.11 2008/04/20 09:14:05 mglocker Exp $ */ /* * Copyright (c) 2008 Robert Nagy * Copyright (c) 2008 Marcus Glocker * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define UVIDEO_DEBUG #ifdef UVIDEO_DEBUG int uvideo_debug = 1; #define DPRINTF(l, x...) do { if ((l) <= uvideo_debug) printf(x); } while (0) #else #define DPRINTF(l, x...) #endif int uvideo_enable(void *); void uvideo_disable(void *); int uvideo_open(void *, int); int uvideo_close(void *); int uvideo_match(struct device *, void *, void *); void uvideo_attach(struct device *, struct device *, void *); int uvideo_detach(struct device *, int); int uvideo_activate(struct device *, enum devact); int uvideo_vc_parse_desc(struct uvideo_softc *); int uvideo_vc_parse_desc_header(struct uvideo_softc *, const usb_descriptor_t *); int uvideo_vs_parse_desc(struct uvideo_softc *, struct usb_attach_arg *, usb_config_descriptor_t *); int uvideo_vs_parse_desc_input_header(struct uvideo_softc *, const usb_descriptor_t *); int uvideo_vs_parse_desc_format(struct uvideo_softc *); int uvideo_vs_parse_desc_format_mjpeg(struct uvideo_softc *, const usb_descriptor_t *); int uvideo_vs_parse_desc_frame(struct uvideo_softc *); int uvideo_vs_parse_desc_frame_mjpeg(struct uvideo_softc *, const usb_descriptor_t *); int uvideo_vs_parse_desc_alt(struct uvideo_softc *, struct usb_attach_arg *uaa, int, int, int); int uvideo_vs_set_alt(struct uvideo_softc *, struct usb_attach_arg *, int, int); int uvideo_desc_len(const usb_descriptor_t *, int, int, int, int); usbd_status uvideo_vs_negotation(struct uvideo_softc *); usbd_status uvideo_vs_set_probe(struct uvideo_softc *, uint8_t *); usbd_status uvideo_vs_get_probe(struct uvideo_softc *, uint8_t *); usbd_status uvideo_vs_set_commit(struct uvideo_softc *, uint8_t *); usbd_status uvideo_vs_alloc_sample(struct uvideo_softc *); usbd_status uvideo_vs_alloc(struct uvideo_softc *); usbd_status uvideo_vs_open(struct uvideo_softc *, struct usb_attach_arg *); void uvideo_vs_start(struct uvideo_softc *); void uvideo_vs_cb(usbd_xfer_handle, usbd_private_handle, usbd_status); int uvideo_vs_decode_stream_header(struct uvideo_softc *, uint8_t *, int); void uvideo_dump_desc_all(struct uvideo_softc *); void uvideo_dump_desc_vc_header(struct uvideo_softc *, const usb_descriptor_t *); void uvideo_dump_desc_input_header(struct uvideo_softc *, const usb_descriptor_t *); void uvideo_dump_desc_input(struct uvideo_softc *, const usb_descriptor_t *); void uvideo_dump_desc_output(struct uvideo_softc *, const usb_descriptor_t *); void uvideo_dump_desc_endpoint(struct uvideo_softc *, const usb_descriptor_t *); void uvideo_dump_desc_interface(struct uvideo_softc *, const usb_descriptor_t *); void uvideo_dump_desc_config(struct uvideo_softc *, const usb_descriptor_t *); void uvideo_dump_desc_cs_endpoint(struct uvideo_softc *, const usb_descriptor_t *); void uvideo_dump_desc_colorformat(struct uvideo_softc *, const usb_descriptor_t *); void uvideo_dump_desc_frame_mjpeg(struct uvideo_softc *, const usb_descriptor_t *); void uvideo_dump_desc_format_mjpeg(struct uvideo_softc *, const usb_descriptor_t *); void uvideo_hexdump(void *, int); int uvideo_debug_file_open(struct uvideo_softc *); void uvideo_debug_file_write_sample(void *); int uvideo_querycap(void *, struct v4l2_capability *); int uvideo_s_fmt(void *, struct v4l2_format *); int uvideo_g_fmt(void *, struct v4l2_format *); int uvideo_reqbufs(void *, struct v4l2_requestbuffers *); #define DEVNAME(_s) ((_s)->sc_dev.dv_xname) const struct cfattach uvideo_ca = { sizeof(struct uvideo_softc), uvideo_match, uvideo_attach, uvideo_detach, uvideo_activate, }; struct cfdriver uvideo_cd = { NULL, "uvideo", DV_DULL }; usbd_status uvideo_usb_request(struct uvideo_softc * sc, u_int8_t type, u_int8_t request, u_int16_t value, u_int16_t index, u_int16_t length, u_int8_t * data); struct video_hw_if uvideo_hw_if = { uvideo_open, /* open */ uvideo_close, /* close */ uvideo_querycap, /* VIDIOC_QUERYCAP */ uvideo_s_fmt, /* VIDIOC_S_FMT */ uvideo_g_fmt, /* VIDIOC_G_FMT */ uvideo_reqbufs, /* VIDIOC_REQBUFS */ NULL, /* VIDIOC_QBUF */ NULL /* VIDIOC_DQBUF */ }; int uvideo_enable(void *v) { struct uvideo_softc *sc = v; DPRINTF(1, "%s: uvideo_enable sc=%p\n", DEVNAME(sc), sc); if (sc->sc_dying) return (EIO); if (sc->sc_enabled) return (EBUSY); sc->sc_enabled = 1; return (0); } void uvideo_disable(void *v) { struct uvideo_softc *sc = v; DPRINTF(1, "%s: uvideo_disable sc=%p\n", DEVNAME(sc), sc); if (!sc->sc_enabled) { printf("uvideo_disable: already disabled!\n"); return; } sc->sc_enabled = 0; } int uvideo_open(void *addr, int flags) { struct uvideo_softc *sc = addr; DPRINTF(1, "uvideo_open: sc=%p\n", sc); if (sc->sc_dying) return (EIO); return (0); } int uvideo_close(void *addr) { #if 0 struct uvideo_softc *sc = addr; DPRINTF(1, "uvideo_close: sc=%p\n", sc); #endif return (0); } int uvideo_match(struct device * parent, void *match, void *aux) { struct usb_attach_arg *uaa = aux; usb_interface_descriptor_t *id; if (uaa->iface == NULL) return (UMATCH_NONE); id = usbd_get_interface_descriptor(uaa->iface); if (id == NULL) return (UMATCH_NONE); if (id->bInterfaceClass == UICLASS_VIDEO && id->bInterfaceSubClass == UISUBCLASS_VIDEOCONTROL) return (UMATCH_VENDOR_PRODUCT_CONF_IFACE); return (UMATCH_NONE); } void uvideo_attach(struct device * parent, struct device * self, void *aux) { struct uvideo_softc *sc = (struct uvideo_softc *) self; struct usb_attach_arg *uaa = aux; usb_config_descriptor_t *cdesc; usbd_status error; sc->sc_udev = uaa->device; /* get the config descriptor */ cdesc = usbd_get_config_descriptor(sc->sc_udev); if (cdesc == NULL) { printf("%s: failed to get configuration descriptor\n", DEVNAME(sc)); return; } #ifdef UVIDEO_DEBUG uvideo_dump_desc_all(sc); #endif /* parse video control descriptors */ error = uvideo_vc_parse_desc(sc); if (error != USBD_NORMAL_COMPLETION) return; /* parse video stream descriptors */ error = uvideo_vs_parse_desc(sc, uaa, cdesc); if (error != USBD_NORMAL_COMPLETION) return; /* do device negotation */ error = uvideo_vs_negotation(sc); if (error != USBD_NORMAL_COMPLETION) return; /* open video stream pipe */ error = uvideo_vs_open(sc, uaa); if (error != USBD_NORMAL_COMPLETION) return; /* allocate video stream xfer buffer */ error = uvideo_vs_alloc(sc); if (error != USBD_NORMAL_COMPLETION) return; /* allocate video stream sample buffer */ error = uvideo_vs_alloc_sample(sc); if (error != USBD_NORMAL_COMPLETION) return; #ifdef UVIDEO_DEBUG uvideo_debug_file_open(sc); usb_init_task(&sc->sc_task_write, uvideo_debug_file_write_sample, sc); #endif uvideo_vs_start(sc); usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, &sc->sc_dev); DPRINTF(1, "uvideo_attach: doing video_attach_mi\n"); sc->sc_videodev = video_attach_mi(&uvideo_hw_if, sc, &sc->sc_dev); } int uvideo_detach(struct device * self, int flags) { struct uvideo_softc *sc = (struct uvideo_softc *) self; int rv = 0; sc->sc_dying = 1; if (sc->sc_videodev != NULL) rv = config_detach(sc->sc_videodev, flags); usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, &sc->sc_dev); return (rv); } int uvideo_activate(struct device * self, enum devact act) { struct uvideo_softc *sc = (struct uvideo_softc *) self; int rv = 0; DPRINTF(1, "uvideo_activate: sc=%p\n", sc); switch (act) { case DVACT_ACTIVATE: break; case DVACT_DEACTIVATE: if (sc->sc_videodev != NULL) config_deactivate(sc->sc_videodev); sc->sc_dying = 1; break; } return (rv); } int uvideo_vc_parse_desc(struct uvideo_softc *sc) { usbd_desc_iter_t iter; const usb_descriptor_t *desc; int vc_header_found; DPRINTF(1, "%s: %s\n", DEVNAME(sc), __func__); vc_header_found = 0; usb_desc_iter_init(sc->sc_udev, &iter); desc = usb_desc_iter_next(&iter); while (desc) { if (desc->bDescriptorType != UDESC_CS_INTERFACE) { desc = usb_desc_iter_next(&iter); continue; } switch (desc->bDescriptorSubtype) { case UDESCSUB_VC_HEADER: if (!uvideo_desc_len(desc, 12, 11, 1, 0)) break; if (vc_header_found) { printf("%s: too many VC_HEADERs!\n", DEVNAME(sc)); return (-1); } if (uvideo_vc_parse_desc_header(sc, desc) != 0) return (-1); vc_header_found = 1; break; /* TODO: which VC descriptors do we need else? */ } desc = usb_desc_iter_next(&iter); } if (vc_header_found == 0) { printf("%s: no VC_HEADER found!\n", DEVNAME(sc)); return (-1); } return (0); } int uvideo_vc_parse_desc_header(struct uvideo_softc *sc, const usb_descriptor_t *desc) { struct usb_video_header_desc *d; d = (struct usb_video_header_desc *)(uint8_t *)desc; if (d->bInCollection == 0) { printf("%s: no VS interface found!\n", DEVNAME(sc)); return (-1); } sc->sc_desc_vc_header.fix = d; sc->sc_desc_vc_header.baInterfaceNr = (uByte *)(d + 1); return (0); } int uvideo_vs_parse_desc(struct uvideo_softc *sc, struct usb_attach_arg *uaa, usb_config_descriptor_t *cdesc) { usbd_desc_iter_t iter; const usb_descriptor_t *desc; usb_interface_descriptor_t *id; int i, iface, numalts; usbd_status error; DPRINTF(1, "%s: number of total interfaces=%d\n", DEVNAME(sc), uaa->nifaces); DPRINTF(1, "%s: number of VS interfaces=%d\n", DEVNAME(sc), sc->sc_desc_vc_header.fix->bInCollection); usb_desc_iter_init(sc->sc_udev, &iter); desc = usb_desc_iter_next(&iter); while (desc) { if (desc->bDescriptorType != UDESC_CS_INTERFACE) { desc = usb_desc_iter_next(&iter); continue; } switch (desc->bDescriptorSubtype) { case UDESCSUB_VS_INPUT_HEADER: if (!uvideo_desc_len(desc, 13, 3, 0, 12)) break; if (uvideo_vs_parse_desc_input_header(sc, desc) != 0) return (-1); break; /* TODO: which VS descriptors do we need else? */ } desc = usb_desc_iter_next(&iter); } /* parse video stream format descriptors */ error = uvideo_vs_parse_desc_format(sc); if (error != USBD_NORMAL_COMPLETION) return (error); /* parse video stream frame descriptors */ error = uvideo_vs_parse_desc_frame(sc); if (error != USBD_NORMAL_COMPLETION) return (error); /* parse interface collection */ for (i = 0; i < sc->sc_desc_vc_header.fix->bInCollection; i++) { iface = sc->sc_desc_vc_header.baInterfaceNr[i]; id = usbd_get_interface_descriptor(uaa->ifaces[iface]); if (id == NULL) { printf("%s: can't get VS interface %d!\n", DEVNAME(sc), iface); return (USBD_INVAL); } numalts = usbd_get_no_alts(cdesc, id->bInterfaceNumber); DPRINTF(1, "%s: VS interface %d, ", DEVNAME(sc), i); DPRINTF(1, "bInterfaceNumber=0x%02x, numalts=%d\n", id->bInterfaceNumber, numalts); uvideo_vs_parse_desc_alt(sc, uaa, i, iface, numalts); } /* XXX for now always use the first video stream */ sc->sc_vs_curr = &sc->sc_vs_coll[0]; return (USBD_NORMAL_COMPLETION); } int uvideo_vs_parse_desc_input_header(struct uvideo_softc *sc, const usb_descriptor_t *desc) { struct usb_video_input_header_desc *d; d = (struct usb_video_input_header_desc *)(uint8_t *)desc; /* on some devices bNumFormats is larger than the truth */ if (d->bNumFormats == 0) { printf("%s: no INPUT FORMAT descriptors found!\n", DEVNAME(sc)); return (-1); } sc->sc_desc_vs_input_header.fix = d; sc->sc_desc_vs_input_header.bmaControls = (uByte *)(d + 1); return (0); } int uvideo_vs_parse_desc_format(struct uvideo_softc *sc) { usbd_desc_iter_t iter; const usb_descriptor_t *desc; DPRINTF(1, "%s: %s\n", DEVNAME(sc), __func__); usb_desc_iter_init(sc->sc_udev, &iter); desc = usb_desc_iter_next(&iter); while (desc) { if (desc->bDescriptorType != UDESC_CS_INTERFACE) { desc = usb_desc_iter_next(&iter); continue; } switch (desc->bDescriptorSubtype) { case UDESCSUB_VS_FORMAT_MJPEG: if (desc->bLength == 11) { uvideo_vs_parse_desc_format_mjpeg(sc, desc); } break; } desc = usb_desc_iter_next(&iter); } return (0); } int uvideo_vs_parse_desc_format_mjpeg(struct uvideo_softc *sc, const usb_descriptor_t *desc) { struct usb_video_format_mjpeg_desc *d; d = (struct usb_video_format_mjpeg_desc *)(uint8_t *)desc; if (d->bNumFrameDescriptors == 0) { printf("%s: no MJPEG frame descriptors found!\n", DEVNAME(sc)); return (-1); } sc->sc_desc_format_mjpeg = d; return (0); } int uvideo_vs_parse_desc_frame(struct uvideo_softc *sc) { usbd_desc_iter_t iter; const usb_descriptor_t *desc; DPRINTF(1, "%s: %s\n", DEVNAME(sc), __func__); usb_desc_iter_init(sc->sc_udev, &iter); desc = usb_desc_iter_next(&iter); while (desc) { if (desc->bDescriptorType != UDESC_CS_INTERFACE) { desc = usb_desc_iter_next(&iter); continue; } switch (desc->bDescriptorSubtype) { case UDESCSUB_VS_FRAME_MJPEG: if (uvideo_vs_parse_desc_frame_mjpeg(sc, desc) == 0) return (0); break; } desc = usb_desc_iter_next(&iter); } printf("%s: no default frame descriptor found!\n", DEVNAME(sc)); return (1); } int uvideo_vs_parse_desc_frame_mjpeg(struct uvideo_softc *sc, const usb_descriptor_t *desc) { struct usb_video_frame_mjpeg_desc *d; d = (struct usb_video_frame_mjpeg_desc *)(uint8_t *)desc; /* choose default frame index */ if (d->bFrameIndex != sc->sc_desc_format_mjpeg->bDefaultFrameIndex) return (1); sc->sc_desc_frame_mjpeg = d; return (0); } int uvideo_vs_parse_desc_alt(struct uvideo_softc *sc, struct usb_attach_arg *uaa, int vs_nr, int iface, int numalts) { struct uvideo_vs_iface *vs; usb_interface_descriptor_t *id; usb_endpoint_descriptor_t *ed; int i; usbd_status error; vs = &sc->sc_vs_coll[vs_nr]; for (i = 0; i < numalts; i++) { error = usbd_set_interface(uaa->ifaces[iface], i); if (error) { printf("%s: could not set alternate interface %d!\n", DEVNAME(sc), i); return (USBD_INVAL); } id = usbd_get_interface_descriptor(uaa->ifaces[iface]); if (id == NULL) continue; DPRINTF(1, "%s: bAlternateSetting=0x%02x, ", DEVNAME(sc), id->bAlternateSetting); ed = usbd_interface2endpoint_descriptor(uaa->ifaces[iface], 0); if (ed == NULL) { DPRINTF(1, "no endpoint descriptor\n"); continue; } DPRINTF(1, "bEndpointAddress=0x%02x, ", ed->bEndpointAddress); DPRINTF(1, "wMaxPacketSize=%d\n", UGETW(ed->wMaxPacketSize)); if (UGETW(ed->wMaxPacketSize) > vs->max_packet_size) { vs->ifaceh = uaa->ifaces[iface]; vs->endpoint = ed->bEndpointAddress; vs->numalts = numalts; vs->curalt = id->bAlternateSetting; vs->max_packet_size = UGETW(ed->wMaxPacketSize); vs->iface = iface; } } /* set back first alternate, otherwise negotation can fail */ error = usbd_set_interface(uaa->ifaces[iface], 0); if (error) { printf("%s: could not set alternate interface 0!\n", DEVNAME(sc)); return (USBD_INVAL); } return (USBD_NORMAL_COMPLETION); } int uvideo_vs_set_alt(struct uvideo_softc *sc, struct usb_attach_arg *uaa, int iface, int max_packet_size) { usb_interface_descriptor_t *id; usb_endpoint_descriptor_t *ed; int i; usbd_status error; for (i = 0; i < sc->sc_vs_curr->numalts; i++) { error = usbd_set_interface(uaa->ifaces[iface], i); if (error) { printf("%s: could not set alternate interface %d!\n", DEVNAME(sc), i); return (USBD_INVAL); } id = usbd_get_interface_descriptor(uaa->ifaces[iface]); if (id == NULL) continue; ed = usbd_interface2endpoint_descriptor(uaa->ifaces[iface], 0); if (ed == NULL) continue; if (UGETW(ed->wMaxPacketSize) == max_packet_size) { sc->sc_vs_curr->endpoint = ed->bEndpointAddress; sc->sc_vs_curr->curalt = id->bAlternateSetting; sc->sc_vs_curr->max_packet_size = UGETW(ed->wMaxPacketSize); DPRINTF(1, "%s: set alternate iface to ", DEVNAME(sc)); DPRINTF(1, "bAlternateSetting=0x%02x\n", id->bAlternateSetting); return (USBD_NORMAL_COMPLETION); } } return (USBD_INVAL); } /* * Thanks to the retarded USB Video Class specs there are different * descriptors types with the same bDescriptorSubtype which makes * it necessary to differ between those types by doing descriptor * size dances :-( * * size_fix: total size of the fixed structure part * off_num_elements: offset which tells the number of following elements * size_element: size of a single element * off_size_element: if size_element is 0 the element size is taken from * this offset in the descriptor */ int uvideo_desc_len(const usb_descriptor_t *desc, int size_fix, int off_num_elements, int size_element, int off_size_element) { uint8_t *buf; int size_elements, size_total; if (desc->bLength < size_fix) return (0); buf = (uint8_t *)desc; if (size_element == 0) size_element = buf[off_size_element]; size_elements = buf[off_num_elements] * size_element; size_total = size_fix + size_elements; if (desc->bLength == size_total && size_elements != 0) return (1); return (0); } usbd_status uvideo_vs_negotation(struct uvideo_softc *sc) { struct usb_video_probe_commit *pc; uint8_t probe_data[34]; usbd_status error; /* set probe */ bzero(probe_data, sizeof(probe_data)); pc = (struct usb_video_probe_commit *)probe_data; #if 0 pc->bFormatIndex = 1; pc->bFrameIndex = 1; #endif pc->bFormatIndex = sc->sc_desc_format_mjpeg->bFormatIndex; pc->bFrameIndex = sc->sc_desc_format_mjpeg->bDefaultFrameIndex; error = uvideo_vs_set_probe(sc, probe_data); if (error != USBD_NORMAL_COMPLETION) return (error); /* get probe */ bzero(probe_data, sizeof(probe_data)); error = uvideo_vs_get_probe(sc, probe_data); if (error != USBD_NORMAL_COMPLETION) return (error); /* commit */ error = uvideo_vs_set_commit(sc, probe_data); if (error != USBD_NORMAL_COMPLETION) return (error); /* save a copy of probe commit */ bcopy(pc, &sc->sc_desc_probe, sizeof(sc->sc_desc_probe)); return (USBD_NORMAL_COMPLETION); } usbd_status uvideo_vs_set_probe(struct uvideo_softc *sc, uint8_t *probe_data) { usb_device_request_t req; usbd_status err; uint16_t tmp; struct usb_video_probe_commit *pc; req.bmRequestType = UVIDEO_SET_IF; req.bRequest = SET_CUR; tmp = VS_PROBE_CONTROL; tmp = tmp << 8; USETW(req.wValue, tmp); USETW(req.wIndex, sc->sc_vs_curr->iface); USETW(req.wLength, 26); pc = (struct usb_video_probe_commit *)probe_data; err = usbd_do_request(sc->sc_udev, &req, probe_data); if (err) { printf("%s: could not SET probe request: %s\n", DEVNAME(sc), usbd_errstr(err)); return (USBD_INVAL); } DPRINTF(1, "%s: SET probe request successfully\n", DEVNAME(sc)); DPRINTF(1, "bmHint=0x%02x\n", UGETW(pc->bmHint)); DPRINTF(1, "bFormatIndex=0x%02x\n", pc->bFormatIndex); DPRINTF(1, "bFrameIndex=0x%02x\n", pc->bFrameIndex); DPRINTF(1, "dwFrameInterval=%d (ns)\n", UGETDW(pc->dwFrameInterval)); DPRINTF(1, "wKeyFrameRate=%d\n", UGETW(pc->wKeyFrameRate)); DPRINTF(1, "wPFrameRate=%d\n", UGETW(pc->wPFrameRate)); DPRINTF(1, "wCompQuality=%d\n", UGETW(pc->wCompQuality)); DPRINTF(1, "wCompWindowSize=0x%04x\n", UGETW(pc->wCompWindowSize)); DPRINTF(1, "wDelay=%d (ms)\n", UGETW(pc->wDelay)); DPRINTF(1, "dwMaxVideoFrameSize=%d (bytes)\n", UGETDW(pc->dwMaxVideoFrameSize)); DPRINTF(1, "dwMaxPayloadTransferSize=%d (bytes)\n", UGETDW(pc->dwMaxPayloadTransferSize)); return (USBD_NORMAL_COMPLETION); } usbd_status uvideo_vs_get_probe(struct uvideo_softc *sc, uint8_t *probe_data) { usb_device_request_t req; usbd_status err; uint16_t tmp; struct usb_video_probe_commit *pc; req.bmRequestType = UVIDEO_GET_IF; req.bRequest = GET_CUR; tmp = VS_PROBE_CONTROL; tmp = tmp << 8; USETW(req.wValue, tmp); USETW(req.wIndex, sc->sc_vs_curr->iface); USETW(req.wLength, 26); pc = (struct usb_video_probe_commit *)probe_data; err = usbd_do_request(sc->sc_udev, &req, probe_data); if (err) { printf("%s: could not GET probe request: %s\n", DEVNAME(sc), usbd_errstr(err)); return (USBD_INVAL); } DPRINTF(1, "%s: GET probe request successfully\n", DEVNAME(sc)); DPRINTF(1, "bmHint=0x%02x\n", UGETW(pc->bmHint)); DPRINTF(1, "bFormatIndex=0x%02x\n", pc->bFormatIndex); DPRINTF(1, "bFrameIndex=0x%02x\n", pc->bFrameIndex); DPRINTF(1, "dwFrameInterval=%d (ns)\n", UGETDW(pc->dwFrameInterval)); DPRINTF(1, "wKeyFrameRate=%d\n", UGETW(pc->wKeyFrameRate)); DPRINTF(1, "wPFrameRate=%d\n", UGETW(pc->wPFrameRate)); DPRINTF(1, "wCompQuality=%d\n", UGETW(pc->wCompQuality)); DPRINTF(1, "wCompWindowSize=0x%04x\n", UGETW(pc->wCompWindowSize)); DPRINTF(1, "wDelay=%d (ms)\n", UGETW(pc->wDelay)); DPRINTF(1, "dwMaxVideoFrameSize=%d (bytes)\n", UGETDW(pc->dwMaxVideoFrameSize)); DPRINTF(1, "dwMaxPayloadTransferSize=%d (bytes)\n", UGETDW(pc->dwMaxPayloadTransferSize)); return (USBD_NORMAL_COMPLETION); } usbd_status uvideo_vs_set_commit(struct uvideo_softc *sc, uint8_t *probe_data) { usb_device_request_t req; usbd_status err; uint16_t tmp; req.bmRequestType = UVIDEO_SET_IF; req.bRequest = SET_CUR; tmp = VS_COMMIT_CONTROL; tmp = tmp << 8; USETW(req.wValue, tmp); USETW(req.wIndex, sc->sc_vs_curr->iface); USETW(req.wLength, 26); err = usbd_do_request(sc->sc_udev, &req, probe_data); if (err) { printf("%s: could not SET commit request: %s\n", DEVNAME(sc), usbd_errstr(err)); return (USBD_INVAL); } DPRINTF(1, "%s: SET commit request successfully\n", DEVNAME(sc)); return (USBD_NORMAL_COMPLETION); } usbd_status uvideo_vs_alloc_sample(struct uvideo_softc *sc) { struct uvideo_sample_buffer *fb = &sc->sc_sample_buffer; DPRINTF(1, "%s: %s\n", DEVNAME(sc), __func__); fb->buf = malloc(32000, M_TEMP, M_NOWAIT); /* XXX find proper size */ if (fb->buf == NULL) { printf("%s: can't allocate sample buffer!\n", DEVNAME(sc)); return (USBD_NOMEM); } fb->fragment = 0; fb->fid = 0; fb->offset = 0; return (USBD_NORMAL_COMPLETION); } usbd_status uvideo_vs_alloc(struct uvideo_softc *sc) { int size; DPRINTF(1, "%s: %s\n", DEVNAME(sc), __func__); sc->sc_vs_curr->sc = sc; sc->sc_vs_curr->xfer = usbd_alloc_xfer(sc->sc_udev); if (sc->sc_vs_curr->xfer == NULL) { printf("%s: could not allocate VS xfer!\n", DEVNAME(sc)); return (USBD_NOMEM); } size = sc->sc_vs_curr->max_packet_size * sc->sc_nframes; sc->sc_vs_curr->buf = usbd_alloc_buffer(sc->sc_vs_curr->xfer, size); if (sc->sc_vs_curr->buf == NULL) { printf("%s: could not allocate VS buffer!\n", DEVNAME(sc)); return (USBD_NOMEM); } DPRINTF(1, "%s: allocated %d bytes VS xfer buffer\n", DEVNAME(sc), size); return (USBD_NORMAL_COMPLETION); } usbd_status uvideo_vs_open(struct uvideo_softc *sc, struct usb_attach_arg *uaa) { usb_endpoint_descriptor_t *ed; usbd_status error; DPRINTF(1, "%s: %s\n", DEVNAME(sc), __func__); error = uvideo_vs_set_alt(sc, uaa, sc->sc_vs_curr->iface, UGETDW(sc->sc_desc_probe.dwMaxPayloadTransferSize)); if (error != USBD_NORMAL_COMPLETION) { printf("%s: could not set alternate interface!\n", DEVNAME(sc)); return (error); } ed = usbd_interface2endpoint_descriptor(sc->sc_vs_curr->ifaceh, 0); if (ed == NULL) { printf("%s: no endpoint descriptor for VS iface\n", DEVNAME(sc)); return (USBD_INVAL); } DPRINTF(1, "%s: open pipe for ", DEVNAME(sc)); DPRINTF(1, "bEndpointAddress=0x%02x (0x%02x), wMaxPacketSize=%d (%d)\n", ed->bEndpointAddress, sc->sc_vs_curr->endpoint, UGETW(ed->wMaxPacketSize), sc->sc_vs_curr->max_packet_size); error = usbd_open_pipe( sc->sc_vs_curr->ifaceh, sc->sc_vs_curr->endpoint, USBD_EXCLUSIVE_USE, &sc->sc_vs_curr->pipeh); if (error != USBD_NORMAL_COMPLETION) { printf("%s: could not open VS pipe: %s\n", DEVNAME(sc), usbd_errstr(error)); return (error); } /* calculate optimal isoc xfer size */ sc->sc_nframes = UVIDEO_SFRAMES_MAX / sc->sc_vs_curr->max_packet_size; if (sc->sc_nframes > UVIDEO_NFRAMES_MAX) sc->sc_nframes = UVIDEO_NFRAMES_MAX; DPRINTF(1, "%s: nframes=%d\n", DEVNAME(sc), sc->sc_nframes); return (USBD_NORMAL_COMPLETION); } void uvideo_vs_start(struct uvideo_softc *sc) { int i; DPRINTF(2, "%s: %s\n", DEVNAME(sc), __func__); for (i = 0; i < sc->sc_nframes; i++) sc->sc_vs_curr->size[i] = sc->sc_vs_curr->max_packet_size; bzero(sc->sc_vs_curr->buf, sc->sc_vs_curr->max_packet_size * sc->sc_nframes); usbd_setup_isoc_xfer( sc->sc_vs_curr->xfer, sc->sc_vs_curr->pipeh, sc->sc_vs_curr, sc->sc_vs_curr->size, sc->sc_nframes, USBD_NO_COPY | USBD_SHORT_XFER_OK, uvideo_vs_cb); (void)usbd_transfer(sc->sc_vs_curr->xfer); } void uvideo_vs_cb(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) { struct uvideo_vs_iface *vs = priv; struct uvideo_softc *sc = vs->sc; int len, i, frame_size; uint8_t *frame; DPRINTF(2, "%s: %s\n", DEVNAME(sc), __func__); if (status != USBD_NORMAL_COMPLETION) { printf("%s: %s: %s\n", DEVNAME(sc), __func__, usbd_errstr(status)); return; } usbd_get_xfer_status(xfer, NULL, NULL, &len, NULL); DPRINTF(2, "%s: *** buffer len = %d\n", DEVNAME(sc), len); if (len == 0) goto skip; for (i = 0; i < sc->sc_nframes; i++) { frame = vs->buf + (i * vs->max_packet_size); frame_size = vs->size[i]; if (frame_size == 0) /* frame is empty */ continue; uvideo_vs_decode_stream_header(sc, frame, frame_size); } skip: /* setup new transfer */ uvideo_vs_start(sc); } int uvideo_vs_decode_stream_header(struct uvideo_softc *sc, uint8_t *frame, int frame_size) { struct uvideo_sample_buffer *fb = &sc->sc_sample_buffer; int header_len, header_flags, fragment_len; if (frame_size < 2) /* frame too small to contain a valid stream header */ return (-1); header_len = frame[0]; header_flags = frame[1]; DPRINTF(2, "%s: header_len = %d\n", DEVNAME(sc), header_len); if (header_len != 12) /* frame header is 12 bytes long */ return (-1); if (header_len == frame_size && !(header_flags & UVIDEO_STREAM_EOF)) { /* stream header without payload and no EOF */ return (-1); } DPRINTF(2, "%s: frame_size = %d\n", DEVNAME(sc), frame_size); if (header_flags & UVIDEO_STREAM_FID) { DPRINTF(2, "%s: %s: FID ON (0x%02x)\n", DEVNAME(sc), __func__, header_flags & UVIDEO_STREAM_FID); } else { DPRINTF(2, "%s: %s: FID OFF (0x%02x)\n", DEVNAME(sc), __func__, header_flags & UVIDEO_STREAM_FID); } if (fb->fragment == 0) { /* first fragment for a sample */ fb->fragment = 1; fb->fid = header_flags & UVIDEO_STREAM_FID; fb->offset = 0; } else { /* continues fragment for a sample, check consistency */ if (fb->fid != (header_flags & UVIDEO_STREAM_FID)) { DPRINTF(1, "%s: %s: wrong FID, ignore last sample!\n", DEVNAME(sc), __func__); fb->fragment = 1; fb->fid = header_flags & UVIDEO_STREAM_FID; fb->offset = 0; } } /* save sample fragment */ fragment_len = frame_size - header_len; bcopy(frame + header_len, fb->buf + fb->offset, fragment_len); fb->offset += fragment_len; if (header_flags & UVIDEO_STREAM_EOF) { /* got a full sample */ DPRINTF(2, "%s: %s: EOF (sample size = %d bytes)\n", DEVNAME(sc), __func__, fb->offset); #ifdef UVIDEO_DEBUG /* do the file write in process context */ usb_rem_task(sc->sc_udev, &sc->sc_task_write); usb_add_task(sc->sc_udev, &sc->sc_task_write); #endif fb->fragment = 0; fb->fid = 0; // fb->offset = 0; } return (0); } void uvideo_dump_desc_all(struct uvideo_softc *sc) { usbd_desc_iter_t iter; const usb_descriptor_t *desc; usb_desc_iter_init(sc->sc_udev, &iter); desc = usb_desc_iter_next(&iter); while (desc) { printf("bLength=%d\n", desc->bLength); printf("bDescriptorType=0x%02x", desc->bDescriptorType); switch (desc->bDescriptorType) { case UDESC_CS_INTERFACE: printf(" (CS_INTERFACE)\n"); switch (desc->bDescriptorSubtype) { case UDESCSUB_VC_HEADER: printf("bDescriptorSubtype=0x%02x", desc->bDescriptorSubtype); if (uvideo_desc_len(desc, 12, 11, 1, 0)) { printf(" (UDESCSUB_VC_HEADER)\n"); printf("|\n"); uvideo_dump_desc_vc_header(sc, desc); break; } if (uvideo_desc_len(desc, 13, 3, 0, 12)) { printf(" (UDESCSUB_VS_INPUT_HEADER)\n"); printf("|\n"); uvideo_dump_desc_input_header(sc, desc); break; } printf(" (unknown)\n"); break; case UDESCSUB_VC_INPUT_TERMINAL: printf("bDescriptorSubtype=0x%02x", desc->bDescriptorSubtype); printf(" (UDESCSUB_VC_INPUT_TERMINAL)\n"); printf("|\n"); uvideo_dump_desc_input(sc, desc); break; case UDESCSUB_VC_OUTPUT_TERMINAL: printf("bDescriptorSubtype=0x%02x", desc->bDescriptorSubtype); printf(" (UDESCSUB_VC_OUTPUT)\n"); printf("|\n"); uvideo_dump_desc_output(sc, desc); break; case UDESCSUB_VC_SELECTOR_UNIT: printf("bDescriptorSubtype=0x%02x", desc->bDescriptorSubtype); printf(" (UDESCSUB_VC_SELECTOR_UNIT)\n"); /* TODO */ break; case UDESCSUB_VC_PROCESSING_UNIT: printf("bDescriptorSubtype=0x%02x", desc->bDescriptorSubtype); printf(" (UDESCSUB_VC_PROCESSING_UNIT)\n"); /* TODO */ break; case UDESCSUB_VC_EXTENSION_UNIT: printf("bDescriptorSubtype=0x%02x", desc->bDescriptorSubtype); if (desc->bLength == 11) { printf(" (UDESCSUB_VS_FORMAT_MJPEG)\n"); printf("|\n"); uvideo_dump_desc_format_mjpeg(sc, desc); } else { printf(" (UDESCSUB_VC_EXTENSION_UNIT)\n"); /* TODO */ } break; case UDESCSUB_VS_FRAME_MJPEG: printf("bDescriptorSubtype=0x%02x", desc->bDescriptorSubtype); printf(" (UDESCSUB_VS_FRAME_MJPEG)\n"); if (desc->bLength > 26) { printf("|\n"); uvideo_dump_desc_frame_mjpeg(sc, desc); } break; case UDESCSUB_VS_COLORFORMAT: printf("bDescriptorSubtype=0x%02x", desc->bDescriptorSubtype); printf(" (UDESCSUB_VS_COLORFORMAT)\n"); printf("|\n"); uvideo_dump_desc_colorformat(sc, desc); break; } break; case UDESC_CS_ENDPOINT: printf(" (UDESC_CS_ENDPOINT)\n"); switch (desc->bDescriptorSubtype) { case EP_INTERRUPT: printf("bDescriptorSubtype=0x%02x", desc->bDescriptorSubtype); printf(" (EP_INTERRUPT)\n"); printf("|\n"); uvideo_dump_desc_cs_endpoint(sc, desc); break; case EP_GENERAL: printf("bDescriptorSubtype=0x%02x", desc->bDescriptorSubtype); printf(" (EP_GENERAL)\n"); printf("|\n"); uvideo_dump_desc_cs_endpoint(sc, desc); break; } break; case UDESC_CONFIG: printf(" (UDESC_CONFIG)\n"); printf("|\n"); uvideo_dump_desc_config(sc, desc); break; case UDESC_ENDPOINT: printf(" (UDESC_ENDPOINT)\n"); printf("|\n"); uvideo_dump_desc_endpoint(sc, desc); break; case UDESC_INTERFACE: printf(" (UDESC_INTERFACE)\n"); printf("|\n"); uvideo_dump_desc_interface(sc, desc); break; default: printf(" (unknown)\n"); break; } printf("\n"); desc = usb_desc_iter_next(&iter); } } void uvideo_dump_desc_vc_header(struct uvideo_softc *sc, const usb_descriptor_t *desc) { struct usb_video_header_desc *d; d = (struct usb_video_header_desc *)(uint8_t *)desc; printf("bLength=%d\n", d->bLength); printf("bDescriptorType=0x%02x\n", d->bDescriptorType); printf("bDescriptorSubtype=0x%02x\n", d->bDescriptorSubtype); printf("bcdUVC=0x%04x\n", UGETW(d->bcdUVC)); printf("wTotalLength=%d\n", UGETW(d->wTotalLength)); printf("dwClockFrequency=%d\n", UGETDW(d->dwClockFrequency)); printf("bInCollection=0x%02x\n", d->bInCollection); } void uvideo_dump_desc_input_header(struct uvideo_softc *sc, const usb_descriptor_t *desc) { struct usb_video_input_header_desc *d; d = (struct usb_video_input_header_desc *)(uint8_t *)desc; printf("bLength=%d\n", d->bLength); printf("bDescriptorType=0x%02x\n", d->bDescriptorType); printf("bDescriptorSubtype=0x%02x\n", d->bDescriptorSubtype); printf("bNumFormats=%d\n", d->bNumFormats); printf("wTotalLength=%d\n", UGETW(d->wTotalLength)); printf("bEndpointAddress=0x%02x\n", d->bEndpointAddress); printf("bmInfo=0x%02x\n", d->bmInfo); printf("bTerminalLink=0x%02x\n", d->bTerminalLink); printf("bStillCaptureMethod=0x%02x\n", d->bStillCaptureMethod); printf("bTriggerSupport=0x%02x\n", d->bTriggerSupport); printf("bTriggerUsage=0x%02x\n", d->bTriggerUsage); printf("bControlSize=%d\n", d->bControlSize); } void uvideo_dump_desc_input(struct uvideo_softc *sc, const usb_descriptor_t *desc) { struct usb_video_input_terminal_desc *d; d = (struct usb_video_input_terminal_desc *)(uint8_t *)desc; printf("bLength=%d\n", d->bLength); printf("bDescriptorType=0x%02x\n", d->bDescriptorType); printf("bDescriptorSubtype=0x%02x\n", d->bDescriptorSubtype); printf("bTerminalID=0x%02x\n", d->bTerminalID); printf("wTerminalType=0x%04x\n", UGETW(d->wTerminalType)); printf("bAssocTerminal=0x%02x\n", d->bAssocTerminal); printf("iTerminal=0x%02x\n", d->iTerminal); } void uvideo_dump_desc_output(struct uvideo_softc *sc, const usb_descriptor_t *desc) { struct usb_video_output_terminal_desc *d; d = (struct usb_video_output_terminal_desc *)(uint8_t *)desc; printf("bLength=%d\n", d->bLength); printf("bDescriptorType=0x%02x\n", d->bDescriptorType); printf("bDescriptorSubtype=0x%02x\n", d->bDescriptorSubtype); printf("bTerminalID=0x%02x\n", d->bTerminalID); printf("bAssocTerminal=0x%02x\n", d->bAssocTerminal); printf("bSourceID=0x%02x\n", d->bSourceID); printf("iTerminal=0x%02x\n", d->iTerminal); } void uvideo_dump_desc_endpoint(struct uvideo_softc *sc, const usb_descriptor_t *desc) { usb_endpoint_descriptor_t *d; d = (usb_endpoint_descriptor_t *)(uint8_t *)desc; printf("bLength=%d\n", d->bLength); printf("bDescriptorType=0x%02x\n", d->bDescriptorType); printf("bEndpointAddress=0x%02x", d->bEndpointAddress); if (UE_GET_DIR(d->bEndpointAddress) == UE_DIR_IN) printf(" (IN)\n"); if (UE_GET_DIR(d->bEndpointAddress) == UE_DIR_OUT) printf(" (OUT)\n"); printf("bmAttributes=0x%02x", d->bmAttributes); if (UE_GET_XFERTYPE(d->bmAttributes) == UE_ISOCHRONOUS) { printf(" (UE_ISOCHRONOUS,"); if (UE_GET_ISO_TYPE(d->bmAttributes) == UE_ISO_ASYNC) printf(" UE_ISO_ASYNC)\n"); if (UE_GET_ISO_TYPE(d->bmAttributes) == UE_ISO_ADAPT) printf(" UE_ISO_ADAPT)\n"); if (UE_GET_ISO_TYPE(d->bmAttributes) == UE_ISO_SYNC) printf(" UE_ISO_SYNC)\n"); } if (UE_GET_XFERTYPE(d->bmAttributes) == UE_CONTROL) printf(" (UE_CONTROL)\n"); if (UE_GET_XFERTYPE(d->bmAttributes) == UE_BULK) printf(" (UE_BULK)\n"); if (UE_GET_XFERTYPE(d->bmAttributes) == UE_INTERRUPT) printf(" (UE_INTERRUPT)\n"); printf("wMaxPacketSize=%d\n", UGETW(d->wMaxPacketSize)); printf("bInterval=0x%02x\n", d->bInterval); } void uvideo_dump_desc_interface(struct uvideo_softc *sc, const usb_descriptor_t *desc) { usb_interface_descriptor_t *d; d = (usb_interface_descriptor_t *)(uint8_t *)desc; printf("bLength=%d\n", d->bLength); printf("bDescriptorType=0x%02x\n", d->bDescriptorType); printf("bInterfaceNumber=0x%02x\n", d->bInterfaceNumber); printf("bAlternateSetting=0x%02x\n", d->bAlternateSetting); printf("bNumEndpoints=%d\n", d->bNumEndpoints); printf("bInterfaceClass=0x%02x\n", d->bInterfaceClass); printf("bInterfaceSubClass=0x%02x\n", d->bInterfaceSubClass); printf("bInterfaceProtocol=0x%02x\n", d->bInterfaceProtocol); printf("iInterface=0x%02x\n", d->iInterface); } void uvideo_dump_desc_config(struct uvideo_softc *sc, const usb_descriptor_t *desc) { usb_config_descriptor_t *d; d = (usb_config_descriptor_t *)(uint8_t *)desc; printf("bLength=%d\n", d->bLength); printf("bDescriptorType=0x%02x\n", d->bDescriptorType); printf("wTotalLength=%d\n", UGETW(d->wTotalLength)); printf("bNumInterface=0x%02x\n", d->bNumInterface); printf("bConfigurationValue=0x%02x\n", d->bConfigurationValue); printf("iConfiguration=0x%02x\n", d->iConfiguration); printf("bmAttributes=0x%02x\n", d->bmAttributes); printf("bMaxPower=0x%02x\n", d->bMaxPower); } void uvideo_dump_desc_cs_endpoint(struct uvideo_softc *sc, const usb_descriptor_t *desc) { struct usb_video_vc_endpoint_desc *d; d = (struct usb_video_vc_endpoint_desc *)(uint8_t *)desc; printf("bLength=%d\n", d->bLength); printf("bDescriptorType=0x%02x\n", d->bDescriptorType); printf("bDescriptorSubtype=0x%02x\n", d->bDescriptorSubtype); printf("wMaxTransferSize=%d\n", UGETW(d->wMaxTransferSize)); } void uvideo_dump_desc_colorformat(struct uvideo_softc *sc, const usb_descriptor_t *desc) { struct usb_video_color_matching_descr *d; d = (struct usb_video_color_matching_descr *)(uint8_t *)desc; printf("bLength=%d\n", d->bLength); printf("bDescriptorType=0x%02x\n", d->bDescriptorType); printf("bDescriptorSubtype=0x%02x\n", d->bDescriptorSubtype); printf("bColorPrimaries=0x%02x\n", d->bColorPrimaries); printf("bTransferCharacteristics=0x%02x\n", d->bTransferCharacteristics); printf("bMatrixCoefficients=0x%02x\n", d->bMatrixCoefficients); } void uvideo_dump_desc_frame_mjpeg(struct uvideo_softc *sc, const usb_descriptor_t *desc) { struct usb_video_frame_mjpeg_desc *d; d = (struct usb_video_frame_mjpeg_desc *)(uint8_t *)desc; printf("bLength=%d\n", d->bLength); printf("bDescriptorType=0x%02x\n", d->bDescriptorType); printf("bDescriptorSubtype=0x%02x\n", d->bDescriptorSubtype); printf("bFrameIndex=0x%02x\n", d->bFrameIndex); printf("bmCapabilities=0x%02x\n", d->bmCapabilities); printf("wWidth=%d\n", UGETW(d->wWidth)); printf("wHeight=%d\n", UGETW(d->wHeight)); printf("dwMinBitRate=%d\n", UGETDW(d->dwMinBitRate)); printf("dwMaxBitRate=%d\n", UGETDW(d->dwMaxBitRate)); printf("dwMaxVideoFrameBufferSize=%d\n", UGETDW(d->dwMaxVideoFrameBufferSize)); printf("dwDefaultFrameInterval=%d\n", UGETDW(d->dwDefaultFrameInterval)); printf("bFrameIntervalType=0x%02x\n", d->bFrameIntervalType); } void uvideo_dump_desc_format_mjpeg(struct uvideo_softc *sc, const usb_descriptor_t *desc) { struct usb_video_format_mjpeg_desc *d; d = (struct usb_video_format_mjpeg_desc *)(uint8_t *)desc; printf("bLength=%d\n", d->bLength); printf("bDescriptorType=0x%02x\n", d->bDescriptorType); printf("bDescriptorSubtype=0x%02x\n", d->bDescriptorSubtype); printf("bFormatIndex=0x%02x\n", d->bFormatIndex); printf("bNumFrameDescriptors=0x%02x\n", d->bNumFrameDescriptors); printf("bmFlags=0x%02x\n", d->bmFlags); printf("bDefaultFrameIndex=0x%02x\n", d->bDefaultFrameIndex); printf("bAspectRatioX=0x%02x\n", d->bAspectRatioX); printf("bAspectRatioY=0x%02x\n", d->bAspectRatioY); printf("bmInterlaceFlags=0x%02x\n", d->bmInterlaceFlags); printf("bCopyProtect=0x%02x\n", d->bCopyProtect); } void uvideo_hexdump(void *buf, int len) { int i; for (i = 0; i < len; i++) { if (i % 16 == 0) printf("%s%5i:", i ? "\n" : "", i); if (i % 4 == 0) printf(" "); printf("%02x", (int)*((u_char *)buf + i)); } printf("\n"); } int uvideo_debug_file_open(struct uvideo_softc *sc) { struct proc *p = curproc; struct nameidata nd; char name[] = "/uvideo.mjpeg"; int error; NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE, name, p); error = vn_open(&nd, O_CREAT | FWRITE | O_NOFOLLOW, S_IRUSR | S_IWUSR); if (error) { return (-1); } sc->sc_vp = nd.ni_vp; VOP_UNLOCK(sc->sc_vp, 0, p); if (nd.ni_vp->v_type != VREG) { vn_close(nd.ni_vp, FWRITE, p->p_ucred, p); return (-1); } DPRINTF(1, "%s: %s: created debug file %s\n", DEVNAME(sc), __func__, name); return (0); } void uvideo_debug_file_write_sample(void *arg) { struct uvideo_softc *sc = arg; struct uvideo_sample_buffer *sb = &sc->sc_sample_buffer; struct proc *p = curproc; int error; if (sc->sc_vp == NULL) { printf("%s: %s: no file open!\n", DEVNAME(sc)); return; } error = vn_rdwr(UIO_WRITE, sc->sc_vp, sb->buf, sb->offset, (off_t)0, UIO_SYSSPACE, IO_APPEND|IO_UNIT, p->p_ucred, NULL, p); if (error) DPRINTF(1, "vn_rdwr error!\n"); } int uvideo_querycap(void *v, struct v4l2_capability * caps) { struct uvideo_softc *sc = v; bzero(caps, sizeof(caps)); strlcpy(caps->driver, DEVNAME(sc), sizeof(caps->driver)); strncpy(caps->card, "Generic USB video class device", sizeof(caps->card)); strncpy(caps->bus_info, "usb", sizeof(caps->bus_info)); caps->version = 1; caps->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING | V4L2_CAP_READWRITE; return (0); } int uvideo_s_fmt(void *v, struct v4l2_format * fmt) { if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return (EINVAL); return (0); } int uvideo_g_fmt(void *v, struct v4l2_format * fmt) { if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return (EINVAL); return (0); } int uvideo_reqbufs(void *v, struct v4l2_requestbuffers * rb) { return (0); }