From: Antonio Ospite <ospite@studenti.unina.it>
Date: Thu, 7 Apr 2011 10:21:38 +0000 (+0200)
Subject: Add a configurable stream_flag field
X-Git-Url: https://git.ao2.it/gspca_kinect.git/commitdiff_plain/9e125d30a241de93889d470b1aca684c39ab9e26

Add a configurable stream_flag field

For now only video stream is supported which has stream_flag = 0x80, but
having the value hardcoded in the sd_pkt_scan routine didn't look
pretty.
This way there is more flexibility in preparation for adding depth
stream support.

Signed-off-by: Antonio Ospite <ospite@studenti.unina.it>
---

diff --git a/kinect.c b/kinect.c
index 0d8acda..174caa8 100644
--- a/kinect.c
+++ b/kinect.c
@@ -56,8 +56,9 @@ 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 */
@@ -223,6 +224,10 @@ 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;
@@ -321,22 +326,21 @@ static void sd_stopN(struct gspca_dev *gspca_dev)
 
 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;
 	}