Add test for the resize_util example.

Change-Id: I97c052a35a1d54455b91c269fd6a9a094fa3db7f

test/resize_util.sh

+#!/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 resize_util example code. To add new tests to
+##  this file, do the following:
+##    1. Write a shell function (this is your test).
+##    2. Add the function to resize_util_tests (on a new line).
+##
+. $(dirname $0)/tools_common.sh
+
+# Environment check: $YUV_RAW_INPUT is required.
+resize_util_verify_environment() {
+  if [ ! -e "${YUV_RAW_INPUT}" ]; then
+    echo "Libvpx test data must exist in LIBVPX_TEST_DATA_PATH."
+    return 1
+  fi
+}
+
+# Resizes $YUV_RAW_INPUT using the resize_util example. $1 is the output
+# dimensions that will be passed to resize_util.
+resize_util() {
+  local resizer="${LIBVPX_BIN_PATH}/resize_util${VPX_TEST_EXE_SUFFIX}"
+  local output_file="${VPX_TEST_OUTPUT_DIR}/resize_util.raw"
+  local frames_to_resize="10"
+  local target_dimensions="$1"
+
+  # resize_util is available only when CONFIG_SHARED is disabled.
+  if [ -z "$(vpx_config_option_enabled CONFIG_SHARED)" ]; then
+    [ -x "${resizer}" ] || return 1
+
+    eval "${resizer}" "${YUV_RAW_INPUT}" \
+        "${YUV_RAW_INPUT_WIDTH}x${YUV_RAW_INPUT_HEIGHT}" \
+        "${target_dimensions}" "${output_file}" ${frames_to_resize} \
+        ${devnull}
+
+    [ -e "${output_file}" ] || return 1
+  fi
+}
+
+# Halves each dimension of $YUV_RAW_INPUT using resize_util().
+resize_down() {
+  local target_width=$((${YUV_RAW_INPUT_WIDTH} / 2))
+  local target_height=$((${YUV_RAW_INPUT_HEIGHT} / 2))
+
+  resize_util "${target_width}x${target_height}"
+}
+
+# Doubles each dimension of $YUV_RAW_INPUT using resize_util().
+resize_up() {
+  local target_width=$((${YUV_RAW_INPUT_WIDTH} * 2))
+  local target_height=$((${YUV_RAW_INPUT_HEIGHT} * 2))
+
+  resize_util "${target_width}x${target_height}"
+}
+
+resize_util_tests="resize_down
+                   resize_up"
+
+run_tests resize_util_verify_environment "${resize_util_tests}"