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Merge pull request 'jetpack-4.4.1' (#3) from jetpack-4.4.1 into master 

Reviewed-on: #3
This commit is contained in:
dchvs 2021-03-04 12:33:15 +00:00
parent 14da17d421 c26468be02
commit d8cb8d7139
4 changed files with 146 additions and 66 deletions
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51
README.md
View File

@ -33,7 +33,7 @@ gst-launch-1.0 nvarguscamerasrc sensor-id=0 aelock=true awblock=true ! 'video/x-
### UDP Streaming Test
#### Sender Endpoint
```
gst-launch-1.0 nvarguscamerasrc ! 'video/x-raw(memory:NVMM), width=(int)1280, height=(int)720, format=(string)NV12,framerate=(fraction)30/1' ! omxh264enc control-rate=2 bitrate=8000000 ! 'video/x-h264, stream-format=(string)byte-stream' ! h264parse ! rtph264pay mtu=1400 ! udpsink host=$HOST_IP port=5000 sync=false async=false
gst-launch-1.0 nvarguscamerasrc ! 'video/x-raw(memory:NVMM), width=(int)1280, height=(int)720, format=(string)NV12,framerate=(fraction)60/1' ! omxh264enc control-rate=2 bitrate=8000000 ! 'video/x-h264, stream-format=(string)byte-stream' ! h264parse ! rtph264pay mtu=1400 ! udpsink host=$HOST_IP port=5000 sync=false async=false
```
#### Receiver Endpoint
@ -71,11 +71,58 @@ v4l2-ctl -d /dev/video0 --set-fmt-video=width=1280,height=720,pixelformat=RG12 -
#### Slave
```
v4l2-ctl -d /dev/video01 --set-fmt-video=width=1280,height=720,pixelformat=RG12 --set-ctrl bypass_mode=0 --stream-mmap
v4l2-ctl -d /dev/video1 --set-fmt-video=width=1280,height=720,pixelformat=RG12 --set-ctrl bypass_mode=0 --stream-mmap
```
### AE Synchronized
First run the master pipeline and then the slave pipeline:
#### Master Pipeline
```
gst-launch-1.0 nvarguscamerasrc sensor-id=1 ! 'video/x-raw(memory:NVMM), width=(int)1280, height=(int)720, format=(string)NV12,framerate=(fraction)60/1' ! fakesink
```
#### Slave Pipeline
```
gst-launch-1.0 nvarguscamerasrc sensor-id=0 aelock=true awblock=true ! 'video/x-raw(memory:NVMM), width=(int)1280, height=(int)720, format=(string)NV12,framerate=(fraction)60/1' ! fakesink
```
### Run script
```
./script_to_control_gain_exposure.sh &
```
## Appends
#### Auto Exposure
The AE controls realays in the feedback provided by the Driver's camera sensor to the nvarguscamerasrc libraries,
and the custom DTSIs with the sensor parameters definitions.
As the AE has interdependency with the digital gain. This gain it's and operation on the Driver, and follows this setup:
```bash
/*
* Digital gain equation:
*
* RANGE: 1x, 7.97x
* GAIN: VAL / STEPS;
* STEPS: 1/32
*
* SCALE FACTOR = 100.000
*
* min_gain_val = 100.000
* max_gain_val = 797.000
* step_gain_val = 3125
*/
MT9M021 sensor datasheet:
* <a href="https://files.niemo.de/aptina_pdfs/MT9M021-M031_Developer_Guide.pdf">MT9M021 Developer Guide</a>
```
Where, the min_gain_val, max_gain_val, step_gain_val are part of the cameras' DTSI (tegra186-tx2-spiri-camera.dtsi) fixed parameters
as per the datasheet. The step_gain_val consists of the steps (1/32 for the register) scaled to a value that makes this fraction become an significant
in integer.
#### Kernel Changes
The Driver for the MT9M021 cameras consists on the following structure, that adds the DTB and Kernel sources, along with its Makefiles that lead its portability to a Kernel source.

33
hardware/nvidia-spiri/platform/t18x/common/kernel-dts/t18x-common-platforms/tegra186-tx2-spiri-camera.dtsi
View File

@ -98,26 +98,25 @@ i2c8 = "/i2c@31e0000";
inherent_gain = "1";
pix_clk_hz = "74250000";
gain_factor = "1";
gain_factor = "3125";
framerate_factor = "1000000";
exposure_factor = "1000000";
min_gain_val = "4";
max_gain_val = "6476";
min_gain_val = "100000";
max_gain_val = "797000";
step_gain_val = "1";
default_gain = "100";
default_gain = "100000";
min_hdr_ratio = "1";
max_hdr_ratio = "1";
min_framerate = "2000000";
max_framerate = "60000000";
step_framerate = "1";
default_framerate = "6000000"; // 60.0 fps
default_framerate = "60000000"; // 60.0 fps
min_exp_time = "23"; // us
max_exp_time = "14933"; // us
min_exp_time = "500"; // us
max_exp_time = "16000"; // us
step_exp_time = "1";
default_exp_time = "10000"; // us
default_exp_time = "8000"; // us
};
ports {
#address-cells = <0x1>;
@ -186,25 +185,25 @@ i2c8 = "/i2c@31e0000";
inherent_gain = "1";
pix_clk_hz = "74250000";
gain_factor = "1";
gain_factor = "3125";
framerate_factor = "1000000";
exposure_factor = "1000000";
min_gain_val = "4";
max_gain_val = "6476";
min_gain_val = "100000";
max_gain_val = "797000";
step_gain_val = "1";
default_gain = "100";
default_gain = "100000";
min_hdr_ratio = "1";
max_hdr_ratio = "1";
min_framerate = "2000000";
max_framerate = "60000000";
step_framerate = "1";
default_framerate = "6000000"; // 60.0 fps
default_framerate = "60000000"; // 60.0 fps
min_exp_time = "23"; // us
max_exp_time = "14933"; // us
min_exp_time = "500"; // us
max_exp_time = "16000"; // us
step_exp_time = "1";
default_exp_time = "10000"; // us
default_exp_time = "8000"; // us
};
ports {
#address-cells = <0x1>;

41
kernel/nvidia-spiri/drivers/media/i2c/mt9m021.c
View File

@ -135,8 +135,8 @@
#define MT9M021_ANALOG_GAIN_SHIFT 4
#define MT9M021_ANALOG_GAIN_MASK 0x0030
#define MT9M021_GLOBAL_GAIN_MIN 4
#define MT9M021_GLOBAL_GAIN_MAX 6476
#define MT9M021_GLOBAL_GAIN_MIN 100
#define MT9M021_GLOBAL_GAIN_MAX 797
#define MT9M021_GLOBAL_GAIN_DEF 100
#define MT9M021_COARSE_INT_TIME_MIN 0x0001
@ -399,28 +399,35 @@ static int mt9m021_set_gain(struct tegracam_device *tc_dev, s64 val)
int err = 0;
u16 gain_mul;
u16 reg16 = 0;
u8 integer, fraction;
u64 gain = 0;
dev_dbg(dev, "Setting Gain to: %lld", val);
if (val >= MT9M021_GAIN_8X_FIXED) {
integer = val / MT9M021_GAIN_8X_FIXED;
fraction = ((val / 8) % 100) * 32 / 100;
gain_mul = MT9M021_GAIN_8X;
} else if (val >= MT9M021_GAIN_4X_FIXED) {
integer = val / MT9M021_GAIN_4X_FIXED;
fraction = ((val / 4) % 100) * 32 / 100;
gain_mul = MT9M021_GAIN_4X;
} else if (val >= MT9M021_GAIN_2X_FIXED) {
integer = val / MT9M021_GAIN_2X_FIXED;
fraction = ((val / 2) % 100) * 32 / 100;
gain_mul = MT9M021_GAIN_2X;
} else {
integer = val / MT9M021_GAIN_1X_FIXED;
fraction = (val % 100) * 32 / 100;
gain_mul = MT9M021_GAIN_1X;
}
/*
* Digital gain equation:
*
* RANGE: 1x, 7.97x
* GAIN: VAL / STEPS;
* STEPS: 1/32
*
* SCALE FACTOR = 100.000
*
* min_gain_val = 100.000
* max_gain_val = 797.000
* step_gain_val = 3125
*/
gain = val / 3125;
/* Update analog gain multiplier */
err = mt9m021_read_reg16(s_data, MT9M021_DIGITAL_TEST, &reg16);
if (err)
@ -436,14 +443,12 @@ static int mt9m021_set_gain(struct tegracam_device *tc_dev, s64 val)
/* Update global gain */
err =
mt9m021_write_reg16(s_data, MT9M021_GLOBAL_GAIN,
(integer << 5) | fraction);
mt9m021_write_reg16(s_data, MT9M021_GLOBAL_GAIN, gain);
msleep(10);
if (err)
goto exit;
err =
mt9m021_write_reg16(s_data, MT9M021_GLOBAL_GAIN_CB,
(integer << 5) | fraction);
mt9m021_write_reg16(s_data, MT9M021_GLOBAL_GAIN_CB, gain);
if (err)
goto exit;
@ -530,9 +535,9 @@ static int mt9m021_set_exposure(struct tegracam_device *tc_dev, s64 val)
dev_dbg(dev, "Setting Exposure Time to : %lld", val);
/* Calculate coarse-time */
coarse_time = mode->signal_properties.pixel_clock.val *
val / mode->image_properties.line_length /
coarse_time =
val * mode->signal_properties.pixel_clock.val /
mode->image_properties.line_length /
mode->control_properties.exposure_factor;
err = mt9m021_set_coarse_time(priv, coarse_time);

29
script_to_control_gain_exposure.sh Executable file
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@ -0,0 +1,29 @@
#!/bin/bash
initial_gain=0
initial_exposure_time=0
while true; do sleep 0.5;
# Read center camera controls
echo `v4l2-ctl -d /dev/video1 --get-ctrl=gain --get-ctrl=exposure` > controls
awk '{print $2}' controls > get_control
actual_gain=`cat get_control`
awk '{print $4}' controls > get_control
actual_exposure_time=`cat get_control`
# Print controls
#echo -e "\n**Center Camera Controls**"
#cat controls
# Remove temp files
rm controls get_control
# Set R/L camera controls manually
if [ $actual_gain -ne $initial_gain ]; then
v4l2-ctl -d /dev/video0 --set-ctrl=gain=$actual_gain
fi
if [ $actual_exposure_time -ne $initial_exposure_time ]; then
v4l2-ctl -d /dev/video0 --set-ctrl=exposure=$actual_exposure_time
fi
# Define new initial value
initial_gain=$actual_gain
initial_exposure_time=$actual_exposure_time
done