diff options
Diffstat (limited to 'drivers/media/video/gspca/zc3xx.c')
| -rw-r--r-- | drivers/media/video/gspca/zc3xx.c | 35 |
1 files changed, 34 insertions, 1 deletions
diff --git a/drivers/media/video/gspca/zc3xx.c b/drivers/media/video/gspca/zc3xx.c index a4c673ff8f02..e4c27a1e1e29 100644 --- a/drivers/media/video/gspca/zc3xx.c +++ b/drivers/media/video/gspca/zc3xx.c @@ -46,6 +46,9 @@ struct sd { __u8 lightfreq; __u8 sharpness; u8 quality; /* image quality */ +#define QUALITY_MIN 40 +#define QUALITY_MAX 60 +#define QUALITY_DEF 50 signed char sensor; /* Type of image sensor chip */ /* !! values used in different tables */ @@ -7180,7 +7183,7 @@ static int sd_config(struct gspca_dev *gspca_dev, sd->gamma = gamma[(int) sd->sensor]; sd->autogain = sd_ctrls[SD_AUTOGAIN].qctrl.default_value; sd->lightfreq = sd_ctrls[SD_FREQ].qctrl.default_value; - sd->quality = 50; + sd->quality = QUALITY_DEF; switch (sd->sensor) { case SENSOR_GC0305: @@ -7536,6 +7539,34 @@ static int sd_querymenu(struct gspca_dev *gspca_dev, return -EINVAL; } +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; +} + static const struct sd_desc sd_desc = { .name = MODULE_NAME, .ctrls = sd_ctrls, @@ -7546,6 +7577,8 @@ static const struct sd_desc sd_desc = { .stop0 = sd_stop0, .pkt_scan = sd_pkt_scan, .querymenu = sd_querymenu, + .get_jcomp = sd_get_jcomp, + .set_jcomp = sd_set_jcomp, }; static const __devinitdata struct usb_device_id device_table[] = { |