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| author | Hans de Goede <hdegoede@redhat.com> | 2012-05-10 19:13:16 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-05-14 16:45:27 +0400 |
| commit | 6a6c70b8f26e1a59fa884e87b304ac50d4214602 (patch) | |
| tree | 691fcb6a498f67a7d208586bb0ce0b21842720c0 /drivers/media/video/gspca/pac7311.c | |
| parent | 42f85d0a9612b559dc3110cc0d468050ac22cf77 (diff) | |
| download | linux-6a6c70b8f26e1a59fa884e87b304ac50d4214602.tar.xz | |
[media] gspca_pac7311: Remove vflip control
Enabling vflip leads to a much better image, with vflip disabled the
image looks washed out as if there is a too high brightness setting.
Since we don't know how to lower the brightness setting when not
vflipping, simply always vflip and tell userspace to flip the image back,
resulting in a much better (less washed out) image.
Since the image is now no longer too bright, also modify the luminance
level the auto-gain algorithm aims for.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/gspca/pac7311.c')
| -rw-r--r-- | drivers/media/video/gspca/pac7311.c | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/drivers/media/video/gspca/pac7311.c b/drivers/media/video/gspca/pac7311.c index 910d881d3694..2cb7d95f7be7 100644 --- a/drivers/media/video/gspca/pac7311.c +++ b/drivers/media/video/gspca/pac7311.c @@ -50,6 +50,8 @@ * 0x0f Master gain 1-245, low value = high gain * 0x10 Another gain 0-15, limited influence (1-2x gain I guess) * 0x21 Bitfield: 0-1 unused, 2-3 vflip/hflip, 4-5 unknown, 6-7 unused + * Note setting vflip disabled leads to a much lower image quality, + * so we always vflip, and tell userspace to flip it back * 0x27 Seems to toggle various gains on / off, Setting bit 7 seems to * completely disable the analog amplification block. Set to 0x68 * for max gain, 0x14 for minimal gain. @@ -75,10 +77,7 @@ struct sd { struct gspca_dev gspca_dev; /* !! must be the first item */ struct v4l2_ctrl *contrast; - struct { /* flip cluster */ - struct v4l2_ctrl *hflip; - struct v4l2_ctrl *vflip; - }; + struct v4l2_ctrl *hflip; u8 sof_read; u8 autogain_ignore_frames; @@ -292,6 +291,7 @@ static int sd_config(struct gspca_dev *gspca_dev, cam->cam_mode = vga_mode; cam->nmodes = ARRAY_SIZE(vga_mode); + cam->input_flags = V4L2_IN_ST_VFLIP; return 0; } @@ -399,7 +399,7 @@ static int sd_s_ctrl(struct v4l2_ctrl *ctrl) setgain(gspca_dev, gspca_dev->gain->val); break; case V4L2_CID_HFLIP: - sethvflip(gspca_dev, sd->hflip->val, sd->vflip->val); + sethvflip(gspca_dev, sd->hflip->val, 1); break; default: return -EINVAL; @@ -432,8 +432,6 @@ static int sd_init_controls(struct gspca_dev *gspca_dev) PAC7311_GAIN_DEFAULT); sd->hflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); - sd->vflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, - V4L2_CID_VFLIP, 0, 1, 1, 0); if (hdl->error) { pr_err("Could not initialize controls\n"); @@ -441,7 +439,6 @@ static int sd_init_controls(struct gspca_dev *gspca_dev) } v4l2_ctrl_auto_cluster(3, &gspca_dev->autogain, 0, false); - v4l2_ctrl_cluster(2, &sd->hflip); return 0; } @@ -457,8 +454,7 @@ static int sd_start(struct gspca_dev *gspca_dev) setcontrast(gspca_dev, v4l2_ctrl_g_ctrl(sd->contrast)); setgain(gspca_dev, v4l2_ctrl_g_ctrl(gspca_dev->gain)); setexposure(gspca_dev, v4l2_ctrl_g_ctrl(gspca_dev->exposure)); - sethvflip(gspca_dev, v4l2_ctrl_g_ctrl(sd->hflip), - v4l2_ctrl_g_ctrl(sd->vflip)); + sethvflip(gspca_dev, v4l2_ctrl_g_ctrl(sd->hflip), 1); /* set correct resolution */ switch (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) { @@ -513,7 +509,7 @@ static void do_autogain(struct gspca_dev *gspca_dev) if (avg_lum == -1) return; - desired_lum = 200; + desired_lum = 170; deadzone = 20; if (sd->autogain_ignore_frames > 0) |