tree-wide: fix assorted typos all over the place

[safe/jmp/linux-2.6] / drivers / media / video / gspca / spca500.c

diff --git a/drivers/media/video/gspca/spca500.c b/drivers/media/video/gspca/spca500.c
index 2176ac6..7dbd5ee 100644 (file)
--- a/drivers/media/video/gspca/spca500.c
+++ b/drivers/media/video/gspca/spca500.c
@@ -32,13 +32,13 @@ MODULE_LICENSE("GPL");
 struct sd {
        struct gspca_dev gspca_dev;             /* !! must be the first item */
 
-       __u8 packet[ISO_MAX_SIZE + 128];
-                                /* !! no more than 128 ff in an ISO packet */
-
        unsigned char brightness;
        unsigned char contrast;
        unsigned char colors;
        u8 quality;
+#define QUALITY_MIN 70
+#define QUALITY_MAX 95
+#define QUALITY_DEF 85
 
        char subtype;
 #define AgfaCl20 0
@@ -589,7 +589,7 @@ static void spca500_reinit(struct gspca_dev *gspca_dev)
        int err;
        __u8 Data;
 
-       /* some unknow command from Aiptek pocket dv and family300 */
+       /* some unknown command from Aiptek pocket dv and family300 */
 
        reg_w(gspca_dev, 0x00, 0x0d01, 0x01);
        reg_w(gspca_dev, 0x00, 0x0d03, 0x00);
@@ -642,7 +642,7 @@ static int sd_config(struct gspca_dev *gspca_dev,
        sd->brightness = BRIGHTNESS_DEF;
        sd->contrast = CONTRAST_DEF;
        sd->colors = COLOR_DEF;
-       sd->quality = 85;
+       sd->quality = QUALITY_DEF;
        return 0;
 }
 
@@ -670,6 +670,8 @@ static int sd_start(struct gspca_dev *gspca_dev)
 
        /* create the JPEG header */
        sd->jpeg_hdr = kmalloc(JPEG_HDR_SZ, GFP_KERNEL);
+       if (!sd->jpeg_hdr)
+               return -ENOMEM;
        jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width,
                        0x22);          /* JPEG 411 */
        jpeg_set_qual(sd->jpeg_hdr, sd->quality);
@@ -903,7 +905,6 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
 {
        struct sd *sd = (struct sd *) gspca_dev;
        int i;
-       __u8 *s, *d;
        static __u8 ffd9[] = {0xff, 0xd9};
 
 /* frames are jpeg 4.1.1 without 0xff escape */
@@ -927,22 +928,19 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
        }
 
        /* add 0x00 after 0xff */
-       for (i = len; --i >= 0; )
-               if (data[i] == 0xff)
-                       break;
-       if (i < 0) {                    /* no 0xff */
-               gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
-               return;
-       }
-       s = data;
-       d = sd->packet;
-       for (i = 0; i < len; i++) {
-               *d++ = *s++;
-               if (s[-1] == 0xff)
-                       *d++ = 0x00;
-       }
-       gspca_frame_add(gspca_dev, INTER_PACKET, frame,
-                       sd->packet, d - sd->packet);
+       i = 0;
+       do {
+               if (data[i] == 0xff) {
+                       gspca_frame_add(gspca_dev, INTER_PACKET, frame,
+                                       data, i + 1);
+                       len -= i;
+                       data += i;
+                       *data = 0x00;
+                       i = 0;
+               }
+               i++;
+       } while (i < len);
+       gspca_frame_add(gspca_dev, INTER_PACKET, frame, data, len);
 }
 
 static void setbrightness(struct gspca_dev *gspca_dev)
@@ -1021,6 +1019,34 @@ static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val)
        return 0;
 }
 
+static int sd_set_jcomp(struct gspca_dev *gspca_dev,
+                       struct v4l2_jpegcompression *jcomp)
+{
+       struct sd *sd = (struct sd *) gspca_dev;
+
+       if (jcomp->quality < QUALITY_MIN)
+               sd->quality = QUALITY_MIN;
+       else if (jcomp->quality > QUALITY_MAX)
+               sd->quality = QUALITY_MAX;
+       else
+               sd->quality = jcomp->quality;
+       if (gspca_dev->streaming)
+               jpeg_set_qual(sd->jpeg_hdr, sd->quality);
+       return 0;
+}
+
+static int sd_get_jcomp(struct gspca_dev *gspca_dev,
+                       struct v4l2_jpegcompression *jcomp)
+{
+       struct sd *sd = (struct sd *) gspca_dev;
+
+       memset(jcomp, 0, sizeof *jcomp);
+       jcomp->quality = sd->quality;
+       jcomp->jpeg_markers = V4L2_JPEG_MARKER_DHT
+                       | V4L2_JPEG_MARKER_DQT;
+       return 0;
+}
+
 /* sub-driver description */
 static struct sd_desc sd_desc = {
        .name = MODULE_NAME,
@@ -1032,6 +1058,8 @@ static struct sd_desc sd_desc = {
        .stopN = sd_stopN,
        .stop0 = sd_stop0,
        .pkt_scan = sd_pkt_scan,
+       .get_jcomp = sd_get_jcomp,
+       .set_jcomp = sd_set_jcomp,
 };
 
 /* -- module initialisation -- */