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+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#ifndef AOM_TEST_MD5_HELPER_H_
+#define AOM_TEST_MD5_HELPER_H_
+
+#include "aom/aom_decoder.h"
+#include "common/md5_utils.h"
+
+namespace libaom_test {
+class MD5 {
+ public:
+ MD5() { MD5Init(&md5_); }
+
+ void Add(const aom_image_t *img) {
+ for (int plane = 0; plane < 3; ++plane) {
+ const uint8_t *buf = img->planes[plane];
+ // Calculate the width and height to do the md5 check. For the chroma
+ // plane, we never want to round down and thus skip a pixel so if
+ // we are shifting by 1 (chroma_shift) we add 1 before doing the shift.
+ // This works only for chroma_shift of 0 and 1.
+ const int bytes_per_sample =
+ (img->fmt & AOM_IMG_FMT_HIGHBITDEPTH) ? 2 : 1;
+ const int h =
+ plane ? (img->d_h + img->y_chroma_shift) >> img->y_chroma_shift
+ : img->d_h;
+ const int w =
+ (plane ? (img->d_w + img->x_chroma_shift) >> img->x_chroma_shift
+ : img->d_w) *
+ bytes_per_sample;
+
+ for (int y = 0; y < h; ++y) {
+ MD5Update(&md5_, buf, w);
+ buf += img->stride[plane];
+ }
+ }
+ }
+
+ void Add(const uint8_t *data, size_t size) {
+ MD5Update(&md5_, data, static_cast<uint32_t>(size));
+ }
+
+ const char *Get(void) {
+ static const char hex[16] = {
+ '0', '1', '2', '3', '4', '5', '6', '7',
+ '8', '9', 'a', 'b', 'c', 'd', 'e', 'f',
+ };
+ uint8_t tmp[16];
+ MD5Context ctx_tmp = md5_;
+
+ MD5Final(tmp, &ctx_tmp);
+ for (int i = 0; i < 16; i++) {
+ res_[i * 2 + 0] = hex[tmp[i] >> 4];
+ res_[i * 2 + 1] = hex[tmp[i] & 0xf];
+ }
+ res_[32] = 0;
+
+ return res_;
+ }
+
+ protected:
+ char res_[33];
+ MD5Context md5_;
+};
+
+} // namespace libaom_test
+
+#endif // AOM_TEST_MD5_HELPER_H_