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[media] gspca - zc3xx: Add V4L2_CID_JPEG_COMPRESSION_QUALITY control support

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This patch is adapted from Sylwester's patch proposed on 2012/02/22.
The JPEG compression control does not work with the autoquality done for the
sensors hv7131r and pas202b.

Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Jean-François Moine 2012-03-16 06:47:23 -03:00 committed by Mauro Carvalho Chehab
parent 9ab2393fc3
commit cd7f98fcd8
1 changed files with 38 additions and 7 deletions
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45
drivers/media/video/gspca/zc3xx.c
View file

@ -44,6 +44,7 @@ enum e_ctrl {
AUTOGAIN,
LIGHTFREQ,
SHARPNESS,
QUALITY,
NCTRLS /* number of controls */
};
@ -99,6 +100,7 @@ static void setexposure(struct gspca_dev *gspca_dev);
static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val);
static void setlightfreq(struct gspca_dev *gspca_dev);
static void setsharpness(struct gspca_dev *gspca_dev);
static int sd_setquality(struct gspca_dev *gspca_dev, __s32 val);
static const struct ctrl sd_ctrls[NCTRLS] = {
[BRIGHTNESS] = {
@ -186,6 +188,18 @@ static const struct ctrl sd_ctrls[NCTRLS] = {
},
.set_control = setsharpness
},
[QUALITY] = {
{
.id = V4L2_CID_JPEG_COMPRESSION_QUALITY,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Compression Quality",
.minimum = 40,
.maximum = 70,
.step = 1,
.default_value = 70 /* updated in sd_init() */
},
.set = sd_setquality
},
};
static const struct v4l2_pix_format vga_mode[] = {
@ -6151,6 +6165,7 @@ static void transfer_update(struct work_struct *work)
|| !gspca_dev->present
|| !gspca_dev->streaming)
goto err;
sd->ctrls[QUALITY].val = jpeg_qual[sd->reg08];
jpeg_set_qual(sd->jpeg_hdr,
jpeg_qual[sd->reg08]);
}
@ -6717,13 +6732,20 @@ static int sd_init(struct gspca_dev *gspca_dev)
sd->ctrls[GAMMA].def = gamma[sd->sensor];
sd->reg08 = reg08_tb[sd->sensor];
sd->ctrls[QUALITY].def = jpeg_qual[sd->reg08];
sd->ctrls[QUALITY].min = jpeg_qual[0];
sd->ctrls[QUALITY].max = jpeg_qual[ARRAY_SIZE(jpeg_qual) - 1];
switch (sd->sensor) {
case SENSOR_HV7131R:
gspca_dev->ctrl_dis = (1 << QUALITY);
break;
case SENSOR_OV7630C:
gspca_dev->ctrl_dis = (1 << LIGHTFREQ) | (1 << EXPOSURE);
break;
case SENSOR_PAS202B:
gspca_dev->ctrl_dis = (1 << QUALITY) | (1 << EXPOSURE);
break;
default:
gspca_dev->ctrl_dis = (1 << EXPOSURE);
break;
@ -7003,24 +7025,33 @@ 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)
static int sd_setquality(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
int i;
for (i = 0; i < ARRAY_SIZE(jpeg_qual) - 1; i++) {
if (jcomp->quality <= jpeg_qual[i])
if (val <= jpeg_qual[i])
break;
}
if (i > 0
&& i == sd->reg08
&& jcomp->quality < jpeg_qual[sd->reg08])
&& val < jpeg_qual[sd->reg08])
i--;
sd->reg08 = i;
jcomp->quality = jpeg_qual[i];
sd->ctrls[QUALITY].val = jpeg_qual[i];
if (gspca_dev->streaming)
jpeg_set_qual(sd->jpeg_hdr, jcomp->quality);
jpeg_set_qual(sd->jpeg_hdr, sd->ctrls[QUALITY].val);
return gspca_dev->usb_err;
}
static int sd_set_jcomp(struct gspca_dev *gspca_dev,
struct v4l2_jpegcompression *jcomp)
{
struct sd *sd = (struct sd *) gspca_dev;
sd_setquality(gspca_dev, jcomp->quality);
jcomp->quality = sd->ctrls[QUALITY].val;
return gspca_dev->usb_err;
}
@ -7030,7 +7061,7 @@ static int sd_get_jcomp(struct gspca_dev *gspca_dev,
struct sd *sd = (struct sd *) gspca_dev;
memset(jcomp, 0, sizeof *jcomp);
jcomp->quality = jpeg_qual[sd->reg08];
jcomp->quality = sd->ctrls[QUALITY].val;
jcomp->jpeg_markers = V4L2_JPEG_MARKER_DHT
| V4L2_JPEG_MARKER_DQT;
return 0;