source: 3DVCSoftware/branches/HTM-6.2-dev1-Samsung/Lib/TLibDecoder/SEIread.cpp @ 347

Last change on this file since 347 was 347, checked in by samsung-htm, 11 years ago

D0122 Integration

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1/* The copyright in this software is being made available under the BSD
2 * License, included below. This software may be subject to other third party
3 * and contributor rights, including patent rights, and no such rights are
4 * granted under this license.
5 *
6 * Copyright (c) 2010-2012, ITU/ISO/IEC
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions are met:
11 *
12 *  * Redistributions of source code must retain the above copyright notice,
13 *    this list of conditions and the following disclaimer.
14 *  * Redistributions in binary form must reproduce the above copyright notice,
15 *    this list of conditions and the following disclaimer in the documentation
16 *    and/or other materials provided with the distribution.
17 *  * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
18 *    be used to endorse or promote products derived from this software without
19 *    specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
31 * THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#include "TLibCommon/TComBitStream.h"
35#include "TLibCommon/SEI.h"
36#include "SEIread.h"
37
38//! \ingroup TLibDecoder
39//! \{
40
41static void parseSEIuserDataUnregistered(TComInputBitstream& bs, SEIuserDataUnregistered &sei, unsigned payloadSize);
42static void parseSEIpictureDigest(TComInputBitstream& bs, SEIpictureDigest& sei, unsigned payloadSize);
43
44/**
45 * unmarshal a single SEI message from bitstream bs
46 */
47void parseSEImessage(TComInputBitstream& bs, SEImessages& seis)
48{
49  unsigned payloadType = 0;
50  for (unsigned char byte = 0xff; 0xff == byte; )
51  {
52    payloadType += byte = bs.read(8);
53  }
54
55  unsigned payloadSize = 0;
56  for (unsigned char byte = 0xff; 0xff == byte; )
57  {
58    payloadSize += byte = bs.read(8);
59  }
60
61  switch (payloadType)
62  {
63  case SEI::USER_DATA_UNREGISTERED:
64    seis.user_data_unregistered = new SEIuserDataUnregistered;
65    parseSEIuserDataUnregistered(bs, *seis.user_data_unregistered, payloadSize);
66    break;
67  case SEI::PICTURE_DIGEST:
68    seis.picture_digest = new SEIpictureDigest;
69    parseSEIpictureDigest(bs, *seis.picture_digest, payloadSize);
70    break;
71  default:
72    assert(!"Unhandled SEI message");
73  }
74}
75
76/**
77 * parse bitstream bs and unpack a user_data_unregistered SEI message
78 * of payloasSize bytes into sei.
79 */
80static void parseSEIuserDataUnregistered(TComInputBitstream& bs, SEIuserDataUnregistered &sei, unsigned payloadSize)
81{
82  assert(payloadSize >= 16);
83  for (unsigned i = 0; i < 16; i++)
84  {
85    sei.uuid_iso_iec_11578[i] = bs.read(8);
86  }
87
88  sei.userDataLength = payloadSize - 16;
89  if (!sei.userDataLength)
90  {
91    sei.userData = 0;
92    return;
93  }
94
95  sei.userData = new unsigned char[sei.userDataLength];
96  for (unsigned i = 0; i < sei.userDataLength; i++)
97  {
98    sei.userData[i] = bs.read(8);
99  }
100}
101
102/**
103 * parse bitstream bs and unpack a picture_digest SEI message
104 * of payloadSize bytes into sei.
105 */
106static void parseSEIpictureDigest(TComInputBitstream& bs, SEIpictureDigest& sei, unsigned payloadSize)
107{
108  assert(payloadSize >= 17);
109  sei.method = static_cast<SEIpictureDigest::Method>(bs.read(8));
110  assert(SEIpictureDigest::MD5 == sei.method);
111  for (unsigned i = 0; i < 16; i++)
112  {
113    sei.digest[i] = bs.read(8);
114  }
115}
116
117//! \}
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