Add tests for decode_to_md5.

Change-Id: I3c85ab0b64ed825bdb7e18e45cc8385297547d96

test/decode_to_md5.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 decode_to_md5 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 decode_to_md5_tests (on a new line).
+##
+. $(dirname $0)/tools_common.sh
+
+# Environment check: Make sure input is available:
+#   $VP8_IVF_FILE and $VP9_IVF_FILE are required.
+decode_to_md5_verify_environment() {
+  if [ ! -e "${VP8_IVF_FILE}" ] || [ ! -e "${VP9_IVF_FILE}" ]; then
+    echo "Libvpx test data must exist in LIBVPX_TEST_DATA_PATH."
+    return 1
+  fi
+}
+
+# Runs decode_to_md5 on $1 and echoes the MD5 sum for the final frame. $2 is
+# interpreted as codec name and used solely to name the output file.
+decode_to_md5() {
+  local decoder="${LIBVPX_BIN_PATH}/decode_to_md5${VPX_TEST_EXE_SUFFIX}"
+  local input_file="$1"
+  local codec="$2"
+  local output_file="${VPX_TEST_OUTPUT_DIR}/decode_to_md5_${codec}"
+
+  [ -x "${decoder}" ] || return 1
+
+  "${decoder}" "${input_file}" "${output_file}" > /dev/null 2>&1
+
+  [ -e "${output_file}" ] || return 1
+
+  local md5_last_frame=$(tail -n1 "${output_file}")
+  echo "${md5_last_frame% *}" | tr -d [:space:]
+}
+
+decode_to_md5_vp8() {
+  # expected MD5 sum for the last frame.
+  local expected_md5="56794d911b02190212bca92f88ad60c6"
+
+  if [ "$(vp8_decode_available)" = "yes" ]; then
+    local actual_md5="$(decode_to_md5 "${VP8_IVF_FILE}" vp8)" || return 1
+    [ "${actual_md5}" = "${expected_md5}" ] || return 1
+  fi
+}
+
+decode_to_md5_vp9() {
+  # expected MD5 sum for the last frame.
+  local expected_md5="2952c0eae93f3dadd1aa84c50d3fd6d2"
+
+  if [ "$(vp9_decode_available)" = "yes" ]; then
+    local actual_md5="$(decode_to_md5 "${VP9_IVF_FILE}" vp9)" || return 1
+    [ "${actual_md5}" = "${expected_md5}" ] || return 1
+  fi
+}
+
+decode_to_md5_tests="decode_to_md5_vp8
+                     decode_to_md5_vp9"
+
+run_tests decode_to_md5_verify_environment "${decode_to_md5_tests}"