/*
* kinect sensor device camera, gspca driver
*
- * Copyright (C) 2010 Antonio Ospite <ospite@studenti.unina.it>
+ * Copyright (C) 2011 Antonio Ospite <ospite@studenti.unina.it>
*
- * Based on the OpenKinect project and libfreenect by Ector Martin
+ * Based on the OpenKinect project and libfreenect
* http://openkinect.org/wiki/Init_Analysis
- *
+ *
+ * Special thanks to Steven Toth and kernellabs.com for sponsoring a Kinect
+ * sensor device which I tested the driver on.
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
MODULE_DESCRIPTION("GSPCA/Kinect Sensor Device USB Camera Driver");
MODULE_LICENSE("GPL");
+#ifdef DEBUG
+int gspca_debug = D_ERR | D_PROBE | D_CONF | D_STREAM | D_FRAM | D_PACK |
+ D_USBI | D_USBO | D_V4L2;
+#endif
+
struct pkt_hdr {
uint8_t magic[2];
uint8_t pad;
uint32_t timestamp;
};
-typedef struct {
+struct cam_hdr {
uint8_t magic[2];
uint16_t len;
uint16_t cmd;
uint16_t tag;
-} cam_hdr;
-
-int gspca_debug = D_ERR | D_PROBE | D_CONF | D_STREAM | D_FRAM | D_PACK |
- D_USBI | D_USBO | D_V4L2;
+};
/* specific webcam descriptor */
struct sd {
- struct gspca_dev gspca_dev; /* !! must be the first item */
- uint16_t cam_tag;
+ struct gspca_dev gspca_dev; /* !! must be the first item */
+ uint16_t cam_tag; /* a sequence number for packets */
+ uint8_t stream_flag; /* to identify different stream types */
+ uint8_t obuf[0x400]; /* output buffer for control commands */
+ uint8_t ibuf[0x200]; /* input buffer for control commands */
};
/* V4L2 controls supported by the driver */
.priv = MODE_1280x1024 | FORMAT_Y10B},
};
-static int kinect_write(struct usb_device *udev, uint8_t *data, uint16_t wLength)
+static int kinect_write(struct usb_device *udev, uint8_t *data,
+ uint16_t wLength)
{
return usb_control_msg(udev,
usb_sndctrlpipe(udev, 0),
struct sd *sd = (struct sd *) gspca_dev;
struct usb_device *udev = gspca_dev->dev;
int res, actual_len;
- uint8_t obuf[0x400];
- uint8_t ibuf[0x200];
- cam_hdr *chdr = (void*)obuf;
- cam_hdr *rhdr = (void*)ibuf;
+ uint8_t *obuf = sd->obuf;
+ uint8_t *ibuf = sd->ibuf;
+ struct cam_hdr *chdr = (void *)obuf;
+ struct cam_hdr *rhdr = (void *)ibuf;
if (cmd_len & 1 || cmd_len > (0x400 - sizeof(*chdr))) {
err("send_cmd: Invalid command length (0x%x)", cmd_len);
memcpy(obuf+sizeof(*chdr), cmdbuf, cmd_len);
res = kinect_write(udev, obuf, cmd_len + sizeof(*chdr));
- info("Control cmd=%04x tag=%04x len=%04x: %d", cmd, sd->cam_tag, cmd_len, res);
+ PDEBUG(D_USBO, "Control cmd=%04x tag=%04x len=%04x: %d", cmd,
+ sd->cam_tag, cmd_len, res);
if (res < 0) {
err("send_cmd: Output control transfer failed (%d)", res);
return res;
do {
actual_len = kinect_read(udev, ibuf, 0x200);
} while (actual_len == 0);
- info("Control reply: %d", res);
+ PDEBUG(D_USBO, "Control reply: %d", res);
if (actual_len < sizeof(*rhdr)) {
err("send_cmd: Input control transfer failed (%d)", res);
return res;
actual_len -= sizeof(*rhdr);
if (rhdr->magic[0] != 0x52 || rhdr->magic[1] != 0x42) {
- err("send_cmd: Bad magic %02x %02x", rhdr->magic[0], rhdr->magic[1]);
+ err("send_cmd: Bad magic %02x %02x", rhdr->magic[0],
+ rhdr->magic[1]);
return -1;
}
if (rhdr->cmd != chdr->cmd) {
return actual_len;
}
-static int write_register(struct gspca_dev *gspca_dev, uint16_t reg, uint16_t data)
+static int write_register(struct gspca_dev *gspca_dev, uint16_t reg,
+ uint16_t data)
{
uint16_t reply[2];
uint16_t cmd[2];
sd->cam_tag = 0;
+ /* Only video stream is supported for now,
+ * which has stream flag = 0x80 */
+ sd->stream_flag = 0x80;
+
cam = &gspca_dev->cam;
cam->cam_mode = video_camera_mode;
cam->nmodes = ARRAY_SIZE(video_camera_mode);
- //cam->npkt = 15;
- //gspca_dev->pkt_size = 960 * 2;
+#if 0
+ /* Setting those values is not needed for video stream */
+ cam->npkt = 15;
+ gspca_dev->pkt_size = 960 * 2;
+#endif
return 0;
}
static void sd_stopN(struct gspca_dev *gspca_dev)
{
- write_register(gspca_dev, 0x05, 0x00); // reset video stream
+ /* reset video stream */
+ write_register(gspca_dev, 0x05, 0x00);
}
static void sd_pkt_scan(struct gspca_dev *gspca_dev, u8 *__data, int len)
{
- //struct sd *sd = (struct sd *) gspca_dev;
-
- struct pkt_hdr *hdr = (void*)__data;
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ struct pkt_hdr *hdr = (void *)__data;
uint8_t *data = __data + sizeof(*hdr);
int datalen = len - sizeof(*hdr);
- /* strm->flag == 0x80 for the color camera stream */
- uint8_t sof = 0x80 | 1;
- uint8_t mof = 0x80 | 2;
- uint8_t eof = 0x80 | 5;
+ uint8_t sof = sd->stream_flag | 1;
+ uint8_t mof = sd->stream_flag | 2;
+ uint8_t eof = sd->stream_flag | 5;
if (len < 12)
return;
if (hdr->magic[0] != 'R' || hdr->magic[1] != 'B') {
- warn("[Stream %02x] Invalid magic %02x%02x", 0x80, //strm->flag
+ warn("[Stream %02x] Invalid magic %02x%02x", sd->stream_flag,
hdr->magic[0], hdr->magic[1]);
return;
}
else if (hdr->flag == mof)
gspca_frame_add(gspca_dev, INTER_PACKET, data, datalen);
- else if(hdr->flag == eof)
+ else if (hdr->flag == eof)
gspca_frame_add(gspca_dev, LAST_PACKET, data, datalen);
else
- warn("Not recognized...");
+ warn("Packet type not recognized...");
}
/* sub-driver description */
projects / gspca_kinect.git / blobdiff