From ac399cd313f13d5208567c01ff70a476605804b7 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Jean-Fran=C3=A7ois=20Moine?= Date: Mon, 27 Feb 2012 05:40:47 -0300 Subject: [PATCH] [media] gspca - pac7302: Do autogain setting work MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit The autogain was always active. Signed-off-by: Jean-François Moine Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/pac7302.c | 76 +++++++++++++---------------- 1 file changed, 35 insertions(+), 41 deletions(-) diff --git a/drivers/media/video/gspca/pac7302.c b/drivers/media/video/gspca/pac7302.c index 1f3fdbf341e6..30662fccb0cf 100644 --- a/drivers/media/video/gspca/pac7302.c +++ b/drivers/media/video/gspca/pac7302.c @@ -66,6 +66,8 @@ #include #include #include "gspca.h" +/* Include pac common sof detection functions */ +#include "pac_common.h" MODULE_AUTHOR("Jean-Francois Moine , " "Thomas Kaiser thomas@kaiser-linux.li"); @@ -98,7 +100,7 @@ struct sd { #define FL_VFLIP 0x02 /* vertical flipped by default */ u8 sof_read; - u8 autogain_ignore_frames; + s8 autogain_ignore_frames; atomic_t avg_lum; }; @@ -111,7 +113,7 @@ static void setredbalance(struct gspca_dev *gspca_dev); static void setbluebalance(struct gspca_dev *gspca_dev); static void setgain(struct gspca_dev *gspca_dev); static void setexposure(struct gspca_dev *gspca_dev); -static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val); +static void setautogain(struct gspca_dev *gspca_dev); static void sethvflip(struct gspca_dev *gspca_dev); static const struct ctrl sd_ctrls[] = { @@ -229,7 +231,7 @@ static const struct ctrl sd_ctrls[] = { #define AUTOGAIN_DEF 1 .default_value = AUTOGAIN_DEF, }, - .set = sd_setautogain, + .set_control = setautogain, }, [HFLIP] = { { @@ -637,6 +639,26 @@ static void setexposure(struct gspca_dev *gspca_dev) reg_w(gspca_dev, 0x11, 0x01); } +static void setautogain(struct gspca_dev *gspca_dev) +{ + struct sd *sd = (struct sd *) gspca_dev; + + /* when switching to autogain set defaults to make sure + we are on a valid point of the autogain gain / + exposure knee graph, and give this change time to + take effect before doing autogain. */ + if (sd->ctrls[AUTOGAIN].val) { + sd->ctrls[EXPOSURE].val = EXPOSURE_DEF; + sd->ctrls[GAIN].val = GAIN_DEF; + sd->autogain_ignore_frames = + PAC_AUTOGAIN_IGNORE_FRAMES; + } else { + sd->autogain_ignore_frames = -1; + } + setexposure(gspca_dev); + setgain(gspca_dev); +} + static void sethvflip(struct gspca_dev *gspca_dev) { struct sd *sd = (struct sd *) gspca_dev; @@ -675,15 +697,13 @@ static int sd_start(struct gspca_dev *gspca_dev) setwhitebalance(gspca_dev); setredbalance(gspca_dev); setbluebalance(gspca_dev); - setgain(gspca_dev); - setexposure(gspca_dev); + setautogain(gspca_dev); sethvflip(gspca_dev); /* only resolution 640x480 is supported for pac7302 */ sd->sof_read = 0; - sd->autogain_ignore_frames = 0; - atomic_set(&sd->avg_lum, -1); + atomic_set(&sd->avg_lum, 270 + sd->ctrls[BRIGHTNESS].val); /* start stream */ reg_w(gspca_dev, 0xff, 0x01); @@ -709,9 +729,6 @@ static void sd_stop0(struct gspca_dev *gspca_dev) reg_w(gspca_dev, 0x78, 0x40); } -/* Include pac common sof detection functions */ -#include "pac_common.h" - /* !! coarse_grained_expo_autogain is not used !! */ #define exp_too_low_cnt flags #define exp_too_high_cnt sof_read @@ -724,16 +741,18 @@ static void do_autogain(struct gspca_dev *gspca_dev) int desired_lum; const int deadzone = 30; - if (avg_lum == -1) + if (sd->autogain_ignore_frames < 0) return; - desired_lum = 270 + sd->ctrls[BRIGHTNESS].val; - - if (sd->autogain_ignore_frames > 0) + if (sd->autogain_ignore_frames > 0) { sd->autogain_ignore_frames--; - else if (auto_gain_n_exposure(gspca_dev, avg_lum, desired_lum, - deadzone, GAIN_KNEE, EXPOSURE_KNEE)) + } else { + desired_lum = 270 + sd->ctrls[BRIGHTNESS].val; + + auto_gain_n_exposure(gspca_dev, avg_lum, desired_lum, + deadzone, GAIN_KNEE, EXPOSURE_KNEE); sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES; + } } /* JPEG header */ @@ -804,8 +823,6 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev, n >= lum_offset) atomic_set(&sd->avg_lum, data[-lum_offset] + data[-lum_offset + 1]); - else - atomic_set(&sd->avg_lum, -1); /* Start the new frame with the jpeg header */ /* The PAC7302 has the image rotated 90 degrees */ @@ -815,29 +832,6 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev, gspca_frame_add(gspca_dev, INTER_PACKET, data, len); } -static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val) -{ - struct sd *sd = (struct sd *) gspca_dev; - - sd->ctrls[AUTOGAIN].val = val; - /* when switching to autogain set defaults to make sure - we are on a valid point of the autogain gain / - exposure knee graph, and give this change time to - take effect before doing autogain. */ - if (sd->ctrls[AUTOGAIN].val) { - sd->ctrls[EXPOSURE].val = EXPOSURE_DEF; - sd->ctrls[GAIN].val = GAIN_DEF; - if (gspca_dev->streaming) { - sd->autogain_ignore_frames = - PAC_AUTOGAIN_IGNORE_FRAMES; - setexposure(gspca_dev); - setgain(gspca_dev); - } - } - - return gspca_dev->usb_err; -} - #ifdef CONFIG_VIDEO_ADV_DEBUG static int sd_dbg_s_register(struct gspca_dev *gspca_dev, struct v4l2_dbg_register *reg) -- 2.30.2