text: #!/bin/sh
  ##
  ##  Copyright (c) 2014 The WebM project authors. All Rights Reserved.
  ##
  ##  Use of this source code is governed by a BSD-style license
  ##  that can be found in the LICENSE file in the root of the source
  ##  tree. An additional intellectual property rights grant can be found
  ##  in the file PATENTS.  All contributing project authors may
  ##  be found in the AUTHORS file in the root of the source tree.
  ##
  ##  This file tests the libvpx twopass_encoder example. To add new tests to this
  ##  file, do the following:
  ##    1. Write a shell function (this is your test).
  ##    2. Add the function to twopass_encoder_tests (on a new line).
  ##
  . $(dirname $0)/tools_common.sh
  
  # Environment check: $YUV_RAW_INPUT is required.
  twopass_encoder_verify_environment() {
    if [ ! -e "${YUV_RAW_INPUT}" ]; then
      echo "Libvpx test data must exist in LIBVPX_TEST_DATA_PATH."
      return 1
    fi
  }
  
  # Runs twopass_encoder using the codec specified by $1 with a frame limit of
  # 100.
  twopass_encoder() {
    local encoder="${LIBVPX_BIN_PATH}/twopass_encoder${VPX_TEST_EXE_SUFFIX}"
    local codec="$1"
    local output_file="${VPX_TEST_OUTPUT_DIR}/twopass_encoder_${codec}.ivf"
  
    if [ ! -x "${encoder}" ]; then
      elog "${encoder} does not exist or is not executable."
      return 1
    fi
  
    eval "${VPX_TEST_PREFIX}" "${encoder}" "${codec}" "${YUV_RAW_INPUT_WIDTH}" \
        "${YUV_RAW_INPUT_HEIGHT}" "${YUV_RAW_INPUT}" "${output_file}" 100 \
        ${devnull}
  
    [ -e "${output_file}" ] || return 1
  }
  
  twopass_encoder_vp8() {
    if [ "$(vp8_encode_available)" = "yes" ]; then
      twopass_encoder vp8 || return 1
    fi
  }
  
  twopass_encoder_vp9() {
    if [ "$(vp9_encode_available)" = "yes" ]; then
      twopass_encoder vp9 || return 1
    fi
  }
  
  
  if [ "$(vpx_config_option_enabled CONFIG_REALTIME_ONLY)" != "yes" ]; then
    twopass_encoder_tests="twopass_encoder_vp8
                           twopass_encoder_vp9"
  
    run_tests twopass_encoder_verify_environment "${twopass_encoder_tests}"
  fi
  