ref: d5683faab945ff1e9be3571846db7e9ed04092ac
dir: /test/md5_helper.h/
/* * Copyright (c) 2012 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. */ #ifndef TEST_MD5_HELPER_H_ #define TEST_MD5_HELPER_H_ #include "./md5_utils.h" #include "vpx/vpx_decoder.h" namespace libvpx_test { class MD5 { public: MD5() { MD5Init(&md5_); } void Add(const vpx_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 & VPX_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 libvpx_test #endif // TEST_MD5_HELPER_H_