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path: root/drivers/media/video/gspca/conex.c
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Diffstat (limited to 'drivers/media/video/gspca/conex.c')
-rw-r--r--drivers/media/video/gspca/conex.c63
1 files changed, 55 insertions, 8 deletions
diff --git a/drivers/media/video/gspca/conex.c b/drivers/media/video/gspca/conex.c
index 1753f5bb354..219cfa6fb87 100644
--- a/drivers/media/video/gspca/conex.c
+++ b/drivers/media/video/gspca/conex.c
@@ -36,8 +36,12 @@ struct sd {
unsigned char brightness;
unsigned char contrast;
unsigned char colors;
+ u8 quality;
+#define QUALITY_MIN 30
+#define QUALITY_MAX 60
+#define QUALITY_DEF 40
- unsigned char qindex;
+ u8 *jpeg_hdr;
};
/* V4L2 controls supported by the driver */
@@ -815,14 +819,13 @@ static int sd_config(struct gspca_dev *gspca_dev,
struct cam *cam;
cam = &gspca_dev->cam;
- cam->epaddr = 0x01;
cam->cam_mode = vga_mode;
cam->nmodes = sizeof vga_mode / sizeof vga_mode[0];
- sd->qindex = 0; /* set the quantization */
sd->brightness = BRIGHTNESS_DEF;
sd->contrast = CONTRAST_DEF;
sd->colors = COLOR_DEF;
+ sd->quality = QUALITY_DEF;
return 0;
}
@@ -839,6 +842,14 @@ static int sd_init(struct gspca_dev *gspca_dev)
static int sd_start(struct gspca_dev *gspca_dev)
{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ /* create the JPEG header */
+ sd->jpeg_hdr = kmalloc(JPEG_HDR_SZ, GFP_KERNEL);
+ jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width,
+ 0x22); /* JPEG 411 */
+ jpeg_set_qual(sd->jpeg_hdr, sd->quality);
+
cx11646_initsize(gspca_dev);
cx11646_fw(gspca_dev);
cx_sensor(gspca_dev);
@@ -849,8 +860,11 @@ static int sd_start(struct gspca_dev *gspca_dev)
/* called on streamoff with alt 0 and on disconnect */
static void sd_stop0(struct gspca_dev *gspca_dev)
{
+ struct sd *sd = (struct sd *) gspca_dev;
int retry = 50;
+ kfree(sd->jpeg_hdr);
+
if (!gspca_dev->present)
return;
reg_w_val(gspca_dev, 0x0000, 0x00);
@@ -876,6 +890,8 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
__u8 *data, /* isoc packet */
int len) /* iso packet length */
{
+ struct sd *sd = (struct sd *) gspca_dev;
+
if (data[0] == 0xff && data[1] == 0xd8) {
/* start of frame */
@@ -883,9 +899,8 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
data, 0);
/* put the JPEG header in the new frame */
- jpeg_put_header(gspca_dev, frame,
- ((struct sd *) gspca_dev)->qindex,
- 0x22);
+ gspca_frame_add(gspca_dev, FIRST_PACKET, frame,
+ sd->jpeg_hdr, JPEG_HDR_SZ);
data += 2;
len -= 2;
}
@@ -988,6 +1003,34 @@ 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,
@@ -998,6 +1041,8 @@ static struct sd_desc sd_desc = {
.start = sd_start,
.stop0 = sd_stop0,
.pkt_scan = sd_pkt_scan,
+ .get_jcomp = sd_get_jcomp,
+ .set_jcomp = sd_set_jcomp,
};
/* -- module initialisation -- */
@@ -1029,8 +1074,10 @@ static struct usb_driver sd_driver = {
/* -- module insert / remove -- */
static int __init sd_mod_init(void)
{
- if (usb_register(&sd_driver) < 0)
- return -1;
+ int ret;
+ ret = usb_register(&sd_driver);
+ if (ret < 0)
+ return ret;
PDEBUG(D_PROBE, "registered");
return 0;
}