client/site_tests/audiovideo_Formats/audiovideo_Formats.py

# Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

"""Test to verify formats availability for hardware offload.
"""
import logging, os
from autotest_lib.client.bin import test, utils
from autotest_lib.client.common_lib import error

try:
  import v4l2
except ImportError:
  # v4l2 module is generated by setup. It will fail when setup runs and succeed
  # when run_once runs.
  pass

class audiovideo_Formats(test.test):
    """Test class to verify formats availability for hardware offload.
    """
    version = 1
    preserve_srcdir = False
    DAISY_VIDEO_DEC = "/dev/mfc-dec"
    DAISY_CAPTURE_FORMATS = ["VM12", "NM12"]
    DAISY_OUTPUT_FORMATS = ["H264", "VP80"]
    # Values in the dictionary are three-element tuples:
    #   (the video device, capture formats list, output formats list)
    FORMATS_DICT = {"DAISY": (DAISY_VIDEO_DEC,
                              DAISY_CAPTURE_FORMATS,
                              DAISY_OUTPUT_FORMATS),
                    "SNOW": (DAISY_VIDEO_DEC, # SNOW=DAISY
                             DAISY_CAPTURE_FORMATS,
                             DAISY_OUTPUT_FORMATS)}

    def setup(self):
        os.chdir(self.srcdir)
        utils.make()

    def run_once(self):
        """Tests whether the supported image formats are expected.
        """
        item = self.FORMATS_DICT.get(utils.get_board())
        if item:
            device = item[0]
            expected_capture_formats = set(item[1])
            expected_output_formats = set(item[2])
            capture_formats = set(v4l2.enum_capture_formats(device))
            output_formats = set(v4l2.enum_output_formats(device))
            logging.info("Capture formats=%s", capture_formats)
            logging.info("Output formats=%s", output_formats)
            if not (expected_capture_formats <= capture_formats):
                raise error.TestFail("Missing capture formats: (%s)" %
                    ", ".join(expected_capture_formats - capture_formats))
            if not (expected_output_formats <= output_formats):
                raise error.TestFail("Missing output formats: (%s)" %
                    ", ".join(expected_output_formats - output_formats))