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/*
* 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 VPX_TEST_MD5_HELPER_H_
#define VPX_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() {
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 // VPX_TEST_MD5_HELPER_H_
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