camera2: Move ITS tests to CTS verifier.
Bug: 17994909
Change-Id: Ie788b1ae3a6b079e37a3472c46aed3dfdcfffe2c
diff --git a/apps/CameraITS/tests/tutorial.py b/apps/CameraITS/tests/tutorial.py
new file mode 100644
index 0000000..1b1999e
--- /dev/null
+++ b/apps/CameraITS/tests/tutorial.py
@@ -0,0 +1,188 @@
+# Copyright 2014 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# --------------------------------------------------------------------------- #
+# The Google Python style guide should be used for scripts: #
+# http://google-styleguide.googlecode.com/svn/trunk/pyguide.html #
+# --------------------------------------------------------------------------- #
+
+# The ITS modules that are in the pymodules/its/ directory. To see formatted
+# docs, use the "pydoc" command:
+#
+# > pydoc its.image
+#
+import its.image
+import its.device
+import its.objects
+import its.target
+
+# Standard Python modules.
+import os.path
+import pprint
+import math
+
+# Modules from the numpy, scipy, and matplotlib libraries. These are used for
+# the image processing code, and images are represented as numpy arrays.
+import pylab
+import numpy
+import matplotlib
+import matplotlib.pyplot
+
+# Each script has a "main" function.
+def main():
+
+ # Each script has a string description of what it does. This is the first
+ # entry inside the main function.
+ """Tutorial script to show how to use the ITS infrastructure.
+ """
+
+ # A convention in each script is to use the filename (without the extension)
+ # as the name of the test, when printing results to the screen or dumping
+ # files.
+ NAME = os.path.basename(__file__).split(".")[0]
+
+ # The standard way to open a session with a connected camera device. This
+ # creates a cam object which encapsulates the session and which is active
+ # within the scope of the "with" block; when the block exits, the camera
+ # session is closed.
+ with its.device.ItsSession() as cam:
+
+ # Get the static properties of the camera device. Returns a Python
+ # associative array object; print it to the console.
+ props = cam.get_camera_properties()
+ pprint.pprint(props)
+
+ # Grab a YUV frame with manual exposure of sensitivity = 200, exposure
+ # duration = 50ms.
+ req = its.objects.manual_capture_request(200, 50*1000*1000)
+ cap = cam.do_capture(req)
+
+ # Print the properties of the captured frame; width and height are
+ # integers, and the metadata is a Python associative array object.
+ print "Captured image width:", cap["width"]
+ print "Captured image height:", cap["height"]
+ pprint.pprint(cap["metadata"])
+
+ # The captured image is YUV420. Convert to RGB, and save as a file.
+ rgbimg = its.image.convert_capture_to_rgb_image(cap)
+ its.image.write_image(rgbimg, "%s_rgb_1.jpg" % (NAME))
+
+ # Can also get the Y,U,V planes separately; save these to greyscale
+ # files.
+ yimg,uimg,vimg = its.image.convert_capture_to_planes(cap)
+ its.image.write_image(yimg, "%s_y_plane_1.jpg" % (NAME))
+ its.image.write_image(uimg, "%s_u_plane_1.jpg" % (NAME))
+ its.image.write_image(vimg, "%s_v_plane_1.jpg" % (NAME))
+
+ # Run 3A on the device. In this case, just use the entire image as the
+ # 3A region, and run each of AWB,AE,AF. Can also change the region and
+ # specify independently for each of AE,AWB,AF whether it should run.
+ #
+ # NOTE: This may fail, if the camera isn't pointed at a reasonable
+ # target scene. If it fails, the script will end. The logcat messages
+ # can be inspected to see the status of 3A running on the device.
+ #
+ # > adb logcat -s 'ItsService:v'
+ #
+ # If this keeps on failing, try also rebooting the device before
+ # running the test.
+ sens, exp, gains, xform, focus = cam.do_3a(get_results=True)
+ print "AE: sensitivity %d, exposure %dms" % (sens, exp/1000000.0)
+ print "AWB: gains", gains, "transform", xform
+ print "AF: distance", focus
+
+ # Grab a new manual frame, using the 3A values, and convert it to RGB
+ # and save it to a file too. Note that the "req" object is just a
+ # Python dictionary that is pre-populated by the its.objets module
+ # functions (in this case a default manual capture), and the key/value
+ # pairs in the object can be used to set any field of the capture
+ # request. Here, the AWB gains and transform (CCM) are being used.
+ # Note that the CCM transform is in a rational format in capture
+ # requests, meaning it is an object with integer numerators and
+ # denominators. The 3A routine returns simple floats instead, however,
+ # so a conversion from float to rational must be performed.
+ req = its.objects.manual_capture_request(sens, exp)
+ xform_rat = its.objects.float_to_rational(xform)
+
+ req["android.colorCorrection.transform"] = xform_rat
+ req["android.colorCorrection.gains"] = gains
+ cap = cam.do_capture(req)
+ rgbimg = its.image.convert_capture_to_rgb_image(cap)
+ its.image.write_image(rgbimg, "%s_rgb_2.jpg" % (NAME))
+
+ # Print out the actual capture request object that was used.
+ pprint.pprint(req)
+
+ # Images are numpy arrays. The dimensions are (h,w,3) when indexing,
+ # in the case of RGB images. Greyscale images are (h,w,1). Pixels are
+ # generally float32 values in the [0,1] range, however some of the
+ # helper functions in its.image deal with the packed YUV420 and other
+ # formats of images that come from the device (and convert them to
+ # float32).
+ # Print the dimensions of the image, and the top-left pixel value,
+ # which is an array of 3 floats.
+ print "RGB image dimensions:", rgbimg.shape
+ print "RGB image top-left pixel:", rgbimg[0,0]
+
+ # Grab a center tile from the image; this returns a new image. Save
+ # this tile image. In this case, the tile is the middle 10% x 10%
+ # rectangle.
+ tile = its.image.get_image_patch(rgbimg, 0.45, 0.45, 0.1, 0.1)
+ its.image.write_image(tile, "%s_rgb_2_tile.jpg" % (NAME))
+
+ # Compute the mean values of the center tile image.
+ rgb_means = its.image.compute_image_means(tile)
+ print "RGB means:", rgb_means
+
+ # Apply a lookup table to the image, and save the new version. The LUT
+ # is basically a tonemap, and can be used to implement a gamma curve.
+ # In this case, the LUT is used to double the value of each pixel.
+ lut = numpy.array([2*i for i in xrange(65536)])
+ rgbimg_lut = its.image.apply_lut_to_image(rgbimg, lut)
+ its.image.write_image(rgbimg_lut, "%s_rgb_2_lut.jpg" % (NAME))
+
+ # Apply a 3x3 matrix to the image, and save the new version. The matrix
+ # is a numpy array, in row major order, and the pixel values are right-
+ # multipled to it (when considered as column vectors). The example
+ # matrix here just boosts the blue channel by 10%.
+ mat = numpy.array([[1, 0, 0 ],
+ [0, 1, 0 ],
+ [0, 0, 1.1]])
+ rgbimg_mat = its.image.apply_matrix_to_image(rgbimg, mat)
+ its.image.write_image(rgbimg_mat, "%s_rgb_2_mat.jpg" % (NAME))
+
+ # Compute a histogram of the luma image, in 256 buckeits.
+ yimg,_,_ = its.image.convert_capture_to_planes(cap)
+ hist,_ = numpy.histogram(yimg*255, 256, (0,256))
+
+ # Plot the histogram using matplotlib, and save as a PNG image.
+ pylab.plot(range(256), hist.tolist())
+ pylab.xlabel("Luma DN")
+ pylab.ylabel("Pixel count")
+ pylab.title("Histogram of luma channel of captured image")
+ matplotlib.pyplot.savefig("%s_histogram.png" % (NAME))
+
+ # Capture a frame to be returned as a JPEG. Load it as an RGB image,
+ # then save it back as a JPEG.
+ cap = cam.do_capture(req, cam.CAP_JPEG)
+ rgbimg = its.image.convert_capture_to_rgb_image(cap)
+ its.image.write_image(rgbimg, "%s_jpg.jpg" % (NAME))
+ r,g,b = its.image.convert_capture_to_planes(cap)
+ its.image.write_image(r, "%s_r.jpg" % (NAME))
+
+# This is the standard boilerplate in each test that allows the script to both
+# be executed directly and imported as a module.
+if __name__ == '__main__':
+ main()
+