mirror of https://github.com/hak5/openwrt-owl.git
190 lines
6.2 KiB
Diff
190 lines
6.2 KiB
Diff
From 75f2608b89d80e627d50aca40f2124253a8275b0 Mon Sep 17 00:00:00 2001
|
|
From: Dave Stevenson <dsteve@broadcom.com>
|
|
Date: Mon, 9 Dec 2013 10:58:01 +0000
|
|
Subject: [PATCH 131/174] V4L2: Fix EV values. Add manual shutter speed control
|
|
|
|
V4L2 EV values should be in units of 1/1000. Corrected.
|
|
Add support for V4L2_CID_EXPOSURE_ABSOLUTE which should
|
|
give manual shutter control. Requires manual exposure mode
|
|
to be selected first.
|
|
|
|
Signed-off-by: Dave Stevenson <dsteve@broadcom.com>
|
|
---
|
|
drivers/media/platform/bcm2835/bcm2835-camera.h | 4 +-
|
|
drivers/media/platform/bcm2835/controls.c | 94 ++++++++++++++++++------
|
|
drivers/media/platform/bcm2835/mmal-parameters.h | 1 +
|
|
3 files changed, 76 insertions(+), 23 deletions(-)
|
|
|
|
--- a/drivers/media/platform/bcm2835/bcm2835-camera.h
|
|
+++ b/drivers/media/platform/bcm2835/bcm2835-camera.h
|
|
@@ -15,7 +15,7 @@
|
|
* core driver device
|
|
*/
|
|
|
|
-#define V4L2_CTRL_COUNT 18 /* number of v4l controls */
|
|
+#define V4L2_CTRL_COUNT 19 /* number of v4l controls */
|
|
|
|
enum {
|
|
MMAL_COMPONENT_CAMERA = 0,
|
|
@@ -51,6 +51,8 @@ struct bm2835_mmal_dev {
|
|
struct mmal_colourfx colourfx;
|
|
int hflip;
|
|
int vflip;
|
|
+ enum mmal_parameter_exposuremode exposure_mode;
|
|
+ unsigned int manual_shutter_speed;
|
|
|
|
/* allocated mmal instance and components */
|
|
struct vchiq_mmal_instance *instance;
|
|
--- a/drivers/media/platform/bcm2835/controls.c
|
|
+++ b/drivers/media/platform/bcm2835/controls.c
|
|
@@ -30,11 +30,23 @@
|
|
#include "mmal-parameters.h"
|
|
#include "bcm2835-camera.h"
|
|
|
|
-/* The supported V4L2_CID_AUTO_EXPOSURE_BIAS values are from -24 to +24.
|
|
- * These are in 1/6th increments so the effective range is -4.0EV to +4.0EV.
|
|
+/* The supported V4L2_CID_AUTO_EXPOSURE_BIAS values are from -4.0 to +4.0.
|
|
+ * MMAL values are in 1/6th increments so the MMAL range is -24 to +24.
|
|
+ * V4L2 docs say value "is expressed in terms of EV, drivers should interpret
|
|
+ * the values as 0.001 EV units, where the value 1000 stands for +1 EV."
|
|
+ * V4L2 is limited to a max of 32 values in a menu, so count in 1/3rds from
|
|
+ * -4 to +4
|
|
*/
|
|
static const s64 ev_bias_qmenu[] = {
|
|
- -24, -21, -18, -15, -12, -9, -6, -3, 0, 3, 6, 9, 12, 15, 18, 21, 24
|
|
+ -4000, -3667, -3333,
|
|
+ -3000, -2667, -2333,
|
|
+ -2000, -1667, -1333,
|
|
+ -1000, -667, -333,
|
|
+ 0, 333, 667,
|
|
+ 1000, 1333, 1667,
|
|
+ 2000, 2333, 2667,
|
|
+ 3000, 3333, 3667,
|
|
+ 4000
|
|
};
|
|
|
|
/* Supported ISO values
|
|
@@ -166,6 +178,22 @@ static int ctrl_set_value(struct bm2835_
|
|
&u32_value, sizeof(u32_value));
|
|
}
|
|
|
|
+static int ctrl_set_value_ev(struct bm2835_mmal_dev *dev,
|
|
+ struct v4l2_ctrl *ctrl,
|
|
+ const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
|
|
+{
|
|
+ s32 s32_value;
|
|
+ struct vchiq_mmal_port *control;
|
|
+
|
|
+ control = &dev->component[MMAL_COMPONENT_CAMERA]->control;
|
|
+
|
|
+ s32_value = (ctrl->val-12)*2; /* Convert from index to 1/6ths */
|
|
+
|
|
+ return vchiq_mmal_port_parameter_set(dev->instance, control,
|
|
+ mmal_ctrl->mmal_id,
|
|
+ &s32_value, sizeof(s32_value));
|
|
+}
|
|
+
|
|
static int ctrl_set_rotate(struct bm2835_mmal_dev *dev,
|
|
struct v4l2_ctrl *ctrl,
|
|
const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
|
|
@@ -245,34 +273,50 @@ static int ctrl_set_exposure(struct bm28
|
|
struct v4l2_ctrl *ctrl,
|
|
const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl)
|
|
{
|
|
- u32 u32_value;
|
|
+ enum mmal_parameter_exposuremode exp_mode = dev->exposure_mode;
|
|
+ u32 shutter_speed = 0;
|
|
struct vchiq_mmal_port *control;
|
|
+ int ret = 0;
|
|
|
|
control = &dev->component[MMAL_COMPONENT_CAMERA]->control;
|
|
|
|
- switch (ctrl->val) {
|
|
- case V4L2_EXPOSURE_AUTO:
|
|
- u32_value = MMAL_PARAM_EXPOSUREMODE_AUTO;
|
|
- break;
|
|
-
|
|
- case V4L2_EXPOSURE_MANUAL:
|
|
- u32_value = MMAL_PARAM_EXPOSUREMODE_OFF;
|
|
- break;
|
|
-
|
|
- case V4L2_EXPOSURE_SHUTTER_PRIORITY:
|
|
- u32_value = MMAL_PARAM_EXPOSUREMODE_SPORTS;
|
|
- break;
|
|
-
|
|
- case V4L2_EXPOSURE_APERTURE_PRIORITY:
|
|
- u32_value = MMAL_PARAM_EXPOSUREMODE_NIGHT;
|
|
- break;
|
|
+ if (mmal_ctrl->mmal_id == MMAL_PARAMETER_SHUTTER_SPEED) {
|
|
+ /* V4L2 is in 100usec increments.
|
|
+ * MMAL is 1usec.
|
|
+ */
|
|
+ dev->manual_shutter_speed = ctrl->val * 100;
|
|
+ } else if (mmal_ctrl->mmal_id == MMAL_PARAMETER_EXPOSURE_MODE) {
|
|
+ switch (ctrl->val) {
|
|
+ case V4L2_EXPOSURE_AUTO:
|
|
+ exp_mode = MMAL_PARAM_EXPOSUREMODE_AUTO;
|
|
+ break;
|
|
+
|
|
+ case V4L2_EXPOSURE_MANUAL:
|
|
+ exp_mode = MMAL_PARAM_EXPOSUREMODE_OFF;
|
|
+ break;
|
|
+
|
|
+ case V4L2_EXPOSURE_SHUTTER_PRIORITY:
|
|
+ exp_mode = MMAL_PARAM_EXPOSUREMODE_SPORTS;
|
|
+ break;
|
|
+
|
|
+ case V4L2_EXPOSURE_APERTURE_PRIORITY:
|
|
+ exp_mode = MMAL_PARAM_EXPOSUREMODE_NIGHT;
|
|
+ break;
|
|
|
|
+ }
|
|
+ dev->exposure_mode = exp_mode;
|
|
}
|
|
|
|
- /* todo: what about the other ten modes there are MMAL parameters for */
|
|
- return vchiq_mmal_port_parameter_set(dev->instance, control,
|
|
- mmal_ctrl->mmal_id,
|
|
- &u32_value, sizeof(u32_value));
|
|
+ if (dev->exposure_mode == MMAL_PARAM_EXPOSUREMODE_OFF)
|
|
+ shutter_speed = dev->manual_shutter_speed;
|
|
+
|
|
+ ret = vchiq_mmal_port_parameter_set(dev->instance, control,
|
|
+ MMAL_PARAMETER_SHUTTER_SPEED,
|
|
+ &shutter_speed, sizeof(shutter_speed));
|
|
+ ret += vchiq_mmal_port_parameter_set(dev->instance, control,
|
|
+ MMAL_PARAMETER_EXPOSURE_MODE,
|
|
+ &exp_mode, sizeof(u32));
|
|
+ return ret;
|
|
}
|
|
|
|
static int ctrl_set_metering_mode(struct bm2835_mmal_dev *dev,
|
|
@@ -578,10 +622,16 @@ static const struct bm2835_mmal_v4l2_ctr
|
|
},
|
|
*/
|
|
{
|
|
+ V4L2_CID_EXPOSURE_ABSOLUTE, MMAL_CONTROL_TYPE_STD,
|
|
+ /* Units of 100usecs */
|
|
+ 1, 1*1000*10, 100*10, 1, NULL,
|
|
+ MMAL_PARAMETER_SHUTTER_SPEED, &ctrl_set_exposure
|
|
+ },
|
|
+ {
|
|
V4L2_CID_AUTO_EXPOSURE_BIAS, MMAL_CONTROL_TYPE_INT_MENU,
|
|
0, ARRAY_SIZE(ev_bias_qmenu) - 1,
|
|
(ARRAY_SIZE(ev_bias_qmenu)+1)/2 - 1, 0, ev_bias_qmenu,
|
|
- MMAL_PARAMETER_EXPOSURE_COMP, &ctrl_set_value
|
|
+ MMAL_PARAMETER_EXPOSURE_COMP, &ctrl_set_value_ev
|
|
},
|
|
{
|
|
V4L2_CID_EXPOSURE_METERING,
|
|
--- a/drivers/media/platform/bcm2835/mmal-parameters.h
|
|
+++ b/drivers/media/platform/bcm2835/mmal-parameters.h
|
|
@@ -161,6 +161,7 @@ enum mmal_parameter_camera_type {
|
|
MMAL_PARAMETER_SW_SHARPEN_DISABLE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */
|
|
MMAL_PARAMETER_FLASH_REQUIRED, /**< @ref MMAL_PARAMETER_BOOLEAN_T */
|
|
MMAL_PARAMETER_SW_SATURATION_DISABLE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */
|
|
+ MMAL_PARAMETER_SHUTTER_SPEED /**< Takes a @ref MMAL_PARAMETER_UINT32_T */
|
|
};
|
|
|
|
enum mmal_parameter_camera_config_timestamp_mode {
|