X-Git-Url: https://git.ao2.it/gspca_kinect.git/blobdiff_plain/71340e51fc094a564c462be235d36cf7ae3fac10..3a445ab5c3e5844cf8ae5f1b369dc4a439c14b58:/kinect.c

diff --git a/kinect.c b/kinect.c
index 0d8acda..6c16413 100644
--- a/kinect.c
+++ b/kinect.c
@@ -5,7 +5,10 @@
  *
  * 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
@@ -56,8 +59,9 @@ typedef struct {
 
 /* 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 steram types */
 };
 
 /* V4L2 controls supported by the driver */
@@ -223,13 +227,20 @@ static int sd_config(struct gspca_dev *gspca_dev,
 
 	sd->cam_tag = 0;
 
+	/* Only color camera 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 color camera */
+	cam->npkt = 15;
+	gspca_dev->pkt_size = 960 * 2;
+#endif
 
 	return 0;
 }
@@ -316,27 +327,27 @@ static int sd_start(struct gspca_dev *gspca_dev)
 
 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 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;
 	}
@@ -351,7 +362,7 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev, u8 *__data, int len)
 		gspca_frame_add(gspca_dev, LAST_PACKET, data, datalen);
 
 	else
-		warn("Not recognized...");
+		warn("Packet type not recognized...");
 }
 
 /* sub-driver description */