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https://chromium.googlesource.com/libyuv/libyuv
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8c8cf8d707
BUG=212 TESTED=manual test by removing mjpeg_decode.cc from gyp file and built/ran unittests Review URL: https://webrtc-codereview.appspot.com/1310007 git-svn-id: http://libyuv.googlecode.com/svn/trunk@656 16f28f9a-4ce2-e073-06de-1de4eb20be90
42 lines
1.2 KiB
C++
42 lines
1.2 KiB
C++
/*
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* Copyright 2012 The LibYuv Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "libyuv/mjpeg_decoder.h"
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namespace libyuv {
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// Helper function to validate the jpeg appears intact.
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// TODO(fbarchard): Optimize case where SOI is found but EOI is not.
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bool ValidateJpeg(const uint8* sample, size_t sample_size) {
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if (sample_size < 64) {
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// ERROR: Invalid jpeg size: sample_size
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return false;
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}
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if (sample[0] != 0xff || sample[1] != 0xd8) { // Start Of Image
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// ERROR: Invalid jpeg initial start code
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return false;
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}
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for (int i = static_cast<int>(sample_size) - 2; i > 1;) {
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if (sample[i] != 0xd9) {
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if (sample[i] == 0xff && sample[i + 1] == 0xd9) { // End Of Image
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return true;
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}
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--i;
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}
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--i;
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}
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// ERROR: Invalid jpeg end code not found. Size sample_size
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return false;
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}
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} // namespace libyuv
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