ref: 48f5886605e95aa863e236a68602a1c4d6ced7fc
dir: /test/vp8_decrypt_test.cc/
/* * Copyright (c) 2013 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. */ #include <cstdio> #include <cstdlib> #include <string> #include <vector> #include "third_party/googletest/src/include/gtest/gtest.h" #include "test/codec_factory.h" #include "test/ivf_video_source.h" namespace { // In a real use the 'decrypt_state' parameter will be a pointer to a struct // with whatever internal state the decryptor uses. For testing we'll just // xor with a constant key, and decrypt_state will point to the start of // the original buffer. const uint8_t test_key[16] = { 0x01, 0x12, 0x23, 0x34, 0x45, 0x56, 0x67, 0x78, 0x89, 0x9a, 0xab, 0xbc, 0xcd, 0xde, 0xef, 0xf0 }; void encrypt_buffer(const uint8_t *src, uint8_t *dst, size_t size, ptrdiff_t offset) { for (size_t i = 0; i < size; ++i) { dst[i] = src[i] ^ test_key[(offset + i) & 15]; } } void test_decrypt_cb(void *decrypt_state, const uint8_t *input, uint8_t *output, int count) { encrypt_buffer(input, output, count, input - reinterpret_cast<uint8_t *>(decrypt_state)); } } // namespace namespace libvpx_test { TEST(TestDecrypt, DecryptWorksVp8) { libvpx_test::IVFVideoSource video("vp80-00-comprehensive-001.ivf"); video.Init(); vpx_codec_dec_cfg_t dec_cfg = vpx_codec_dec_cfg_t(); VP8Decoder decoder(dec_cfg, 0); video.Begin(); // no decryption vpx_codec_err_t res = decoder.DecodeFrame(video.cxdata(), video.frame_size()); ASSERT_EQ(VPX_CODEC_OK, res) << decoder.DecodeError(); // decrypt frame video.Next(); std::vector<uint8_t> encrypted(video.frame_size()); encrypt_buffer(video.cxdata(), &encrypted[0], video.frame_size(), 0); vpx_decrypt_init di = { test_decrypt_cb, &encrypted[0] }; decoder.Control(VPXD_SET_DECRYPTOR, &di); res = decoder.DecodeFrame(&encrypted[0], encrypted.size()); ASSERT_EQ(VPX_CODEC_OK, res) << decoder.DecodeError(); } } // namespace libvpx_test