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path: root/drivers/media/video/gspca/sunplus.c
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Diffstat (limited to 'drivers/media/video/gspca/sunplus.c')
-rw-r--r--drivers/media/video/gspca/sunplus.c124
1 files changed, 57 insertions, 67 deletions
diff --git a/drivers/media/video/gspca/sunplus.c b/drivers/media/video/gspca/sunplus.c
index 6d904d5e4c74..c2b8c10c075a 100644
--- a/drivers/media/video/gspca/sunplus.c
+++ b/drivers/media/video/gspca/sunplus.c
@@ -39,8 +39,11 @@ struct sd {
unsigned char contrast;
unsigned char colors;
unsigned char autogain;
+ u8 quality;
+#define QUALITY_MIN 70
+#define QUALITY_MAX 95
+#define QUALITY_DEF 85
- char qindex;
char bridge;
#define BRIDGE_SPCA504 0
#define BRIDGE_SPCA504B 1
@@ -52,6 +55,8 @@ struct sd {
#define LogitechClickSmart420 2
#define LogitechClickSmart820 3
#define MegapixV4 4
+
+ u8 *jpeg_hdr;
};
/* V4L2 controls supported by the driver */
@@ -812,7 +817,6 @@ static int sd_config(struct gspca_dev *gspca_dev,
struct cam *cam;
cam = &gspca_dev->cam;
- cam->epaddr = 0x01;
sd->bridge = id->driver_info >> 8;
sd->subtype = id->driver_info;
@@ -850,10 +854,10 @@ static int sd_config(struct gspca_dev *gspca_dev,
cam->nmodes = sizeof vga_mode2 / sizeof vga_mode2[0];
break;
}
- sd->qindex = 5; /* set the quantization table */
sd->brightness = sd_ctrls[SD_BRIGHTNESS].qctrl.default_value;
sd->contrast = sd_ctrls[SD_CONTRAST].qctrl.default_value;
sd->colors = sd_ctrls[SD_COLOR].qctrl.default_value;
+ sd->quality = QUALITY_DEF;
return 0;
}
@@ -970,6 +974,12 @@ static int sd_start(struct gspca_dev *gspca_dev)
__u8 i;
__u8 info[6];
+ /* 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);
+
if (sd->bridge == BRIDGE_SPCA504B)
spca504B_setQtable(gspca_dev);
spca504B_SetSizeType(gspca_dev);
@@ -1079,6 +1089,13 @@ static void sd_stopN(struct gspca_dev *gspca_dev)
}
}
+static void sd_stop0(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ kfree(sd->jpeg_hdr);
+}
+
static void sd_pkt_scan(struct gspca_dev *gspca_dev,
struct gspca_frame *frame, /* target */
__u8 *data, /* isoc packet */
@@ -1155,9 +1172,8 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
ffd9, 2);
/* 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);
}
/* add 0x00 after 0xff */
@@ -1198,26 +1214,6 @@ static void setbrightness(struct gspca_dev *gspca_dev)
}
}
-static void getbrightness(struct gspca_dev *gspca_dev)
-{
- struct sd *sd = (struct sd *) gspca_dev;
- __u16 brightness = 0;
-
- switch (sd->bridge) {
- default:
-/* case BRIDGE_SPCA533: */
-/* case BRIDGE_SPCA504B: */
-/* case BRIDGE_SPCA504: */
-/* case BRIDGE_SPCA504C: */
- brightness = reg_r_12(gspca_dev, 0x00, 0x21a7, 2);
- break;
- case BRIDGE_SPCA536:
- brightness = reg_r_12(gspca_dev, 0x00, 0x20f0, 2);
- break;
- }
- sd->brightness = ((brightness & 0xff) - 128) % 255;
-}
-
static void setcontrast(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
@@ -1237,24 +1233,6 @@ static void setcontrast(struct gspca_dev *gspca_dev)
}
}
-static void getcontrast(struct gspca_dev *gspca_dev)
-{
- struct sd *sd = (struct sd *) gspca_dev;
-
- switch (sd->bridge) {
- default:
-/* case BRIDGE_SPCA533: */
-/* case BRIDGE_SPCA504B: */
-/* case BRIDGE_SPCA504: */
-/* case BRIDGE_SPCA504C: */
- sd->contrast = reg_r_12(gspca_dev, 0x00, 0x21a8, 2);
- break;
- case BRIDGE_SPCA536:
- sd->contrast = reg_r_12(gspca_dev, 0x00, 0x20f1, 2);
- break;
- }
-}
-
static void setcolors(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
@@ -1274,24 +1252,6 @@ static void setcolors(struct gspca_dev *gspca_dev)
}
}
-static void getcolors(struct gspca_dev *gspca_dev)
-{
- struct sd *sd = (struct sd *) gspca_dev;
-
- switch (sd->bridge) {
- default:
-/* case BRIDGE_SPCA533: */
-/* case BRIDGE_SPCA504B: */
-/* case BRIDGE_SPCA504: */
-/* case BRIDGE_SPCA504C: */
- sd->colors = reg_r_12(gspca_dev, 0x00, 0x21ae, 2) >> 1;
- break;
- case BRIDGE_SPCA536:
- sd->colors = reg_r_12(gspca_dev, 0x00, 0x20f6, 2) >> 1;
- break;
- }
-}
-
static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
@@ -1306,7 +1266,6 @@ static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
- getbrightness(gspca_dev);
*val = sd->brightness;
return 0;
}
@@ -1325,7 +1284,6 @@ static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
- getcontrast(gspca_dev);
*val = sd->contrast;
return 0;
}
@@ -1344,7 +1302,6 @@ static int sd_getcolors(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
- getcolors(gspca_dev);
*val = sd->colors;
return 0;
}
@@ -1365,6 +1322,34 @@ static int sd_getautogain(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 const struct sd_desc sd_desc = {
.name = MODULE_NAME,
@@ -1374,7 +1359,10 @@ static const struct sd_desc sd_desc = {
.init = sd_init,
.start = sd_start,
.stopN = sd_stopN,
+ .stop0 = sd_stop0,
.pkt_scan = sd_pkt_scan,
+ .get_jcomp = sd_get_jcomp,
+ .set_jcomp = sd_set_jcomp,
};
/* -- module initialisation -- */
@@ -1465,8 +1453,10 @@ 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;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.