[media] gspca/autogain_functions.h: Allow users to declare what they want (a648e310) · Commits · 戴 / test

drivers/media/video/gspca/autogain_functions.h

+5 −1

Original line number	Diff line number	Diff line
		@@ -18,6 +18,7 @@
		* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		*/

		#ifdef WANT_REGULAR_AUTOGAIN
		/* auto gain and exposure algorithm based on the knee algorithm described here:
		http://ytse.tricolour.net/docs/LowLightOptimization.html

		@@ -91,7 +92,9 @@ static inline int auto_gain_n_exposure(
		gain, exposure);
		return retval;
		}
		#endif

		#ifdef WANT_COARSE_EXPO_AUTOGAIN
		/* Autogain + exposure algorithm for cameras with a coarse exposure control
		(usually this means we can only control the clockdiv to change exposure)
		As changing the clockdiv so that the fps drops from 30 to 15 fps for
		@@ -103,7 +106,7 @@ static inline int auto_gain_n_exposure(
		which leads to oscilating as one exposure step is huge.

		Note this assumes that the sd struct for the cam in question has
		exp_too_high_cnt and exp_too_high_cnt int members for use by this function.
		exp_too_low_cnt and exp_too_high_cnt int members for use by this function.

		Returns 0 if no changes were made, 1 if the gain and or exposure settings
		where changed. */
		@@ -177,3 +180,4 @@ static inline int coarse_grained_expo_autogain(
		gain, exposure);
		return retval;
		}
		#endif

+2 −0

Original line number	Diff line number	Diff line
		@@ -2001,6 +2001,8 @@ static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val)
		return gspca_dev->usb_err;
		}

		#define WANT_REGULAR_AUTOGAIN
		#define WANT_COARSE_EXPO_AUTOGAIN
		#include "autogain_functions.h"

		static void do_autogain(struct gspca_dev *gspca_dev)

+1 −3

Original line number	Diff line number	Diff line
		@@ -729,9 +729,7 @@ static void sd_stop0(struct gspca_dev *gspca_dev)
		reg_w(gspca_dev, 0x78, 0x40);
		}

		/* !! coarse_grained_expo_autogain is not used !! */
		#define exp_too_low_cnt flags
		#define exp_too_high_cnt sof_read
		#define WANT_REGULAR_AUTOGAIN
		#include "autogain_functions.h"

		static void do_autogain(struct gspca_dev *gspca_dev)

+2 −0

Original line number	Diff line number	Diff line
		@@ -1000,6 +1000,8 @@ static void setfreq(struct gspca_dev *gspca_dev)
		}
		}

		#define WANT_REGULAR_AUTOGAIN
		#define WANT_COARSE_EXPO_AUTOGAIN
		#include "autogain_functions.h"

		static void do_autogain(struct gspca_dev *gspca_dev)

+1 −4

Original line number	Diff line number	Diff line
		@@ -2800,10 +2800,7 @@ static void sd_stop0(struct gspca_dev *gspca_dev)
		}
		}

		/* !! coarse_grained_expo_autogain is not used !! */
		#define exp_too_low_cnt bridge
		#define exp_too_high_cnt sensor

		#define WANT_REGULAR_AUTOGAIN
		#include "autogain_functions.h"

		static void do_autogain(struct gspca_dev *gspca_dev)