Merge lp:~brendan-donegan/checkbox/add_camera_tests into lp:checkbox

[Brendan Donegan]

As part of the story coming up to kill checkbox-certification and compatibility once and for all, this a proposal to shift the camera tests from compatibility to base checkbox. The tests take up a minimal amount of space (6KB between the job file and the script) and perform very useful tests, so would be ideal to include in base checkbox directly (rather than any kind of 'enhanced' package for more obscure tests used mainly be this certification team)

There is a corresponding changeset to remove the same test from compatibility.

[Marc Tardif (cr3)]

Looks good, merging.

review: Approve

=== added file 'jobs/camera.txt'
--- jobs/camera.txt	1970-01-01 00:00:00 +0000
+++ jobs/camera.txt	2011-06-13 12:51:03 +0000
@@ -0,0 +1,48 @@
+plugin: shell
+name: camera/detect
+requires:
+ package.name == 'xawtv'
+ device.category == 'CAPTURE'
+command: camera_test -t detect
+description: Automated test case that attempts to detect a camera
+
+plugin: manual
+name: camera/display
+depends: camera/detect
+requires: 
+ package.name == 'python-gst0.10'
+ device.category == 'CAPTURE'
+command: camera_test -t display
+description:
+ Select Test to display a video capture from the camera
+ .
+ Did you see the video capture?
+
+plugin: manual
+name: camera/still
+depends: camera/detect
+requires:
+ package.name == 'python-gst0.10'
+ package.name == 'eog'
+ package.name == 'xawtv'
+ device.category == 'CAPTURE'
+command: camera_test -t still
+description:
+ Select Test to display a still image from the camera
+ .
+ Did you see the image?
+
+plugin: manual
+name: camera/video
+depends: camera/detect
+requires:
+ package.name == 'python-gst0.10'
+ package.name == 'totem'
+ device.category == 'CAPTURE'
+command: camera_test -t video
+description:
+ Select Test to capture video to a file and open it in totem.
+ Please make sure that both audio and video is captured.
+ .
+ Did you see/hear the capture?
+

=== added file 'scripts/camera_test'
--- scripts/camera_test	1970-01-01 00:00:00 +0000
+++ scripts/camera_test	2011-06-13 12:51:03 +0000
@@ -0,0 +1,143 @@
+#!/usr/bin/python
+
+import sys, time, tempfile, re
+from subprocess import check_call as call
+from subprocess import CalledProcessError, Popen, PIPE, STDOUT
+
+from optparse import OptionParser
+
+import gobject
+
+class CameraTest:
+    """
+    A simple class that displays a test image via GStreamer.
+    """
+    def __init__(self):
+        self._mainloop = gobject.MainLoop()
+	self._width = 640
+	self._height = 480
+
+
+    def detect(self):
+        """
+        Display information regarding webcam hardware
+        """
+        process = Popen(["xawtv", "-hwscan"], stdout=PIPE, stderr=STDOUT)
+        (output, _) = process.communicate()
+
+        output = "\n".join([line for line in output.splitlines()[2:]
+                            if line])
+        print output
+
+        if re.search('^/dev/video\d+:\s+OK', output, re.M):
+            return 0
+        else:
+            return 1
+
+
+    def led(self):
+        """
+        Activate camera (switch on led), but don't display any output
+        """
+	pipespec=("autovideosrc "
+                  "! video/x-raw-yuv "
+                  "! ffmpegcolorspace "
+                  "! testsink")
+	self._pipeline = gst.parse_launch(pipespec)
+        self._pipeline.set_state(gst.STATE_PLAYING)
+        time.sleep(3)
+        self._pipeline.set_state(gst.STATE_READY)
+
+
+    def display(self):
+        """
+        Displays the preview window
+        """
+	pipespec=("autovideosrc "
+                  "! video/x-raw-yuv,width=%(width)d,height=%(height)d "
+                  "! ffmpegcolorspace "
+                  "! autovideosink"
+                  % {'width': self._width,
+                     'height': self._height})
+	self._pipeline = gst.parse_launch(pipespec)
+        self._pipeline.set_state(gst.STATE_PLAYING)
+        time.sleep(3)
+        self._pipeline.set_state(gst.STATE_READY)
+
+
+    def still(self):
+        """
+        Captures an image to a file
+        """
+        with tempfile.NamedTemporaryFile(prefix='camera_test_',
+                                         suffix='.jpg',
+                                         delete=True) as file:
+            try:
+                call(["v4lctl", "snap", "jpeg",
+                      "%dx%d" % (self._width, self._height), file.name])
+                call(["eog", file.name])
+            except CalledProcessError:
+                pipespec=("autovideosrc "
+                          "! video/x-raw-yuv,width=%(width)d,height=%(height)d "
+                          "! ffmpegcolorspace "
+                          "! jpegenc "
+                          "! filesink location=%(filename)s"
+                          % {'width': self._width,
+                             'height': self._height,
+                             'filename': file.name})
+                self._pipeline = gst.parse_launch(pipespec)
+                self._pipeline.set_state(gst.STATE_PLAYING)
+                time.sleep(3)
+                self._pipeline.set_state(gst.STATE_READY)
+                call(["eog", file.name])
+
+
+    def video(self, duration=5):
+        """
+        Captures a short movie to a file
+        """
+        with tempfile.NamedTemporaryFile(prefix='camera_test_',
+                                         suffix='.avi',
+                                         delete=True) as file:
+            pipespec=("autoaudiosrc "
+                      "! audio/x-raw-int,rate=44100,channels=2 "
+                      "! multiqueue ! mux. "
+                      "autovideosrc "
+                      "! video/x-raw-yuv,width=%(width)d,height=%(height)d "
+                      "! multiqueue ! mux. "
+                      "avimux name=mux "
+                      "! filesink location=%(filename)s"
+                      % {'width': self._width,
+                         'height': self._height,
+                         'filename': file.name})
+            self._pipeline = gst.parse_launch(pipespec)
+            self._pipeline.set_state(gst.STATE_PLAYING)
+            time.sleep(duration)
+            self._pipeline.set_state(gst.STATE_READY)
+            call(["totem", file.name])
+
+
+def parse_arguments(argv):
+    """
+    Parse command line arguments
+    """
+    tests = ['detect', 'display', 'still', 'video', 'led']
+    parser = OptionParser(description = "Run a camera-related test")
+    parser.add_option("-t", "--test", choices=tests,
+                      default=tests[0],
+                      help=("Test to execute (available choices: %s or %s)"
+                            % (", ".join(tests[:-1]), tests[-1])))
+    return parser.parse_args(argv)[0]
+
+
+if __name__ == "__main__":
+    options = parse_arguments(sys.argv[1:])
+
+    # Import gst only for the test cases that will need it
+    if options.test in ['display', 'still', 'video', 'led']:
+        import pygst
+        pygst.require("0.10")
+        import gst
+
+    camera = CameraTest()
+    sys.exit(getattr(camera, options.test)())