diff options
Diffstat (limited to 'drivers/media/video/gspca/conex.c')
| -rw-r--r-- | drivers/media/video/gspca/conex.c | 63 |
1 files changed, 55 insertions, 8 deletions
diff --git a/drivers/media/video/gspca/conex.c b/drivers/media/video/gspca/conex.c index 1753f5bb3544..219cfa6fb877 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; } |