1 /* 2 * Copyright (c) 2012 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef TEST_MD5_HELPER_H_ 12 #define TEST_MD5_HELPER_H_ 13 14 #include "./md5_utils.h" 15 #include "vpx/vpx_decoder.h" 16 17 namespace libvpx_test { 18 class MD5 { 19 public: 20 MD5() { 21 MD5Init(&md5_); 22 } 23 24 void Add(const vpx_image_t *img) { 25 for (int plane = 0; plane < 3; ++plane) { 26 const uint8_t *buf = img->planes[plane]; 27 // Calculate the width and height to do the md5 check. For the chroma 28 // plane, we never want to round down and thus skip a pixel so if 29 // we are shifting by 1 (chroma_shift) we add 1 before doing the shift. 30 // This works only for chroma_shift of 0 and 1. 31 const int h = plane ? (img->d_h + img->y_chroma_shift) >> 32 img->y_chroma_shift : img->d_h; 33 const int w = plane ? (img->d_w + img->x_chroma_shift) >> 34 img->x_chroma_shift : img->d_w; 35 36 for (int y = 0; y < h; ++y) { 37 MD5Update(&md5_, buf, w); 38 buf += img->stride[plane]; 39 } 40 } 41 } 42 43 const char *Get(void) { 44 static const char hex[16] = { 45 '0', '1', '2', '3', '4', '5', '6', '7', 46 '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 47 }; 48 uint8_t tmp[16]; 49 MD5Context ctx_tmp = md5_; 50 51 MD5Final(tmp, &ctx_tmp); 52 for (int i = 0; i < 16; i++) { 53 res_[i * 2 + 0] = hex[tmp[i] >> 4]; 54 res_[i * 2 + 1] = hex[tmp[i] & 0xf]; 55 } 56 res_[32] = 0; 57 58 return res_; 59 } 60 61 protected: 62 char res_[33]; 63 MD5Context md5_; 64 }; 65 66 } // namespace libvpx_test 67 68 #endif // TEST_MD5_HELPER_H_ 69
