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/* The copyright in this software is being made available under the BSD
* License, included below. This software may be subject to other third party
* and contributor rights, including patent rights, and no such rights are
* granted under this license.
*
* Copyright (c) 2010-2022, ITU/ISO/IEC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdint.h>
#include <cassert>
#include <fstream>
#include <sstream>
#include <iostream>
#include <string.h>
#include "TLibDecoder/AnnexBread.h"
using namespace std;
static const struct {
AnnexBStats expected;
unsigned data_len;
const char data[10];
} tests[] = {
/* trivial cases: startcode, no payload */
{{0, 0, 3, 0, 0}, 3, {0,0,1}},
{{0, 1, 3, 0, 0}, 4, {0,0,0,1}},
{{2, 1, 3, 0, 0}, 6, {0,0,0,0,0,1}},
/* trivial cases: startcode, payload */
{{0, 0, 3, 1, 0}, 4, {0,0,1,2}},
{{0, 0, 3, 2, 0}, 5, {0,0,1,2,0}},
{{0, 0, 3, 3, 0}, 6, {0,0,1,2,0,0}},
{{0, 0, 3, 1, 3}, 7, {0,0,1,2,0,0,0}},
/* trivial cases: two nal units: extract the first */
{{0, 0, 3, 1, 0}, 8, {0,0,1,2,0,0,1,3}},
{{0, 0, 3, 1, 0}, 9, {0,0,1,2,0,0,0,1,3}},
{{0, 0, 3, 1, 1}, 10, {0,0,1,2,0,0,0,0,1,3}},
/* edge cases with EOF near start*/
{{0, 0, 0, 0, 0}, 0, {}},
{{1, 0, 0, 0, 0}, 1, {0}},
{{2, 0, 0, 0, 0}, 2, {0,0}},
{{3, 0, 0, 0, 0}, 3, {0,0,0}},
};
void selftest()
{
/* test */
for (unsigned i = 0; i < sizeof(tests)/sizeof(*tests); i++)
{
istringstream in(string(tests[i].data, tests[i].data_len));
InputByteStream bs(in);
AnnexBStats actual = AnnexBStats();
vector<uint8_t> nalUnit;
byteStreamNALUnit(bs, nalUnit, actual);
cout << "Self-Test: " << i << ", {";
for (unsigned j = 0; j < tests[i].data_len; j++)
{
cout << hex << (unsigned int)tests[i].data[j] << dec;
if (j < tests[i].data_len-1)
{
cout << ",";
}
}
cout << "} ";
bool ok = true;
#define VERIFY(a,b,m) \
if (a.m != b.m) { \
ok = false; \
cout << endl << " MISSMATCH " #m << ", E(" << b.m << ") != " << a.m; \
}
VERIFY(actual, tests[i].expected, m_numLeadingZero8BitsBytes);
VERIFY(actual, tests[i].expected, m_numZeroByteBytes);
VERIFY(actual, tests[i].expected, m_numStartCodePrefixBytes);
VERIFY(actual, tests[i].expected, m_numBytesInNALUnit);
VERIFY(actual, tests[i].expected, m_numTrailingZero8BitsBytes);
#undef VERIFY
if (ok)
{
cout << "OK";
}
cout << endl;
}
}
int main(int argc, char*argv[])
{
selftest();
if (argc != 2)
{
return 0;
}
ifstream in(argv[1], ifstream::in | ifstream::binary);
InputByteStream bs(in);
AnnexBStats annexBStatsTotal = AnnexBStats();
AnnexBStats annexBStatsTotal_VCL = AnnexBStats();
AnnexBStats annexBStatsTotal_Filler = AnnexBStats();
AnnexBStats annexBStatsTotal_Other = AnnexBStats();
unsigned numNALUnits = 0;
cout << "NALUnits:" << endl;
while (!!in)
{
AnnexBStats annexBStatsSingle = AnnexBStats();
vector<uint8_t> nalUnit;
byteStreamNALUnit(bs, nalUnit, annexBStatsSingle);
int nal_unit_type = -1;
if (annexBStatsSingle.m_numBytesInNALUnit)
{
nal_unit_type = nalUnit[0] & 0x1f;
}
cout << " - NALU: #" << numNALUnits << " nal_unit_type:" << nal_unit_type << endl
<< " num_bytes(leading_zero_8bits): " << annexBStatsSingle.m_numLeadingZero8BitsBytes << endl
<< " num_bytes(zero_byte): " << annexBStatsSingle.m_numZeroByteBytes << endl
<< " num_bytes(start_code_prefix_one_3bytes): " << annexBStatsSingle.m_numStartCodePrefixBytes << endl
<< " NumBytesInNALunit: " << annexBStatsSingle.m_numBytesInNALUnit << endl
<< " num_bytes(trailing_zero_8bits): " << annexBStatsSingle.m_numTrailingZero8BitsBytes << endl
;
annexBStatsTotal += annexBStatsSingle;
numNALUnits++;
if (!annexBStatsSingle.m_numBytesInNALUnit)
{
continue;
}
/* identify the NAL unit type and add stats to the correct
* accumulators */
switch (nalUnit[0] & 0x1f) {
case 1: case 2: case 3: case 4: case 5:
annexBStatsTotal_VCL += annexBStatsSingle;
break;
case 12:
annexBStatsTotal_Filler += annexBStatsSingle;
break;
default:
annexBStatsTotal_Other += annexBStatsSingle;
};
}
cout << "Summary: " << endl
<< " num_bytes(leading_zero_8bits): " << annexBStatsTotal.m_numLeadingZero8BitsBytes << endl
<< " num_bytes(zero_byte): " << annexBStatsTotal.m_numZeroByteBytes << endl
<< " num_bytes(start_code_prefix_one_3bytes): " << annexBStatsTotal.m_numStartCodePrefixBytes << endl
<< " NumBytesInNALunit: " << annexBStatsTotal.m_numBytesInNALUnit << endl
<< " num_bytes(trailing_zero_8bits): " << annexBStatsTotal.m_numTrailingZero8BitsBytes << endl
;
cout << "Summary(VCL): " << endl
<< " num_bytes(leading_zero_8bits): " << annexBStatsTotal_VCL.m_numLeadingZero8BitsBytes << endl
<< " num_bytes(zero_byte): " << annexBStatsTotal_VCL.m_numZeroByteBytes << endl
<< " num_bytes(start_code_prefix_one_3bytes): " << annexBStatsTotal_VCL.m_numStartCodePrefixBytes << endl
<< " NumBytesInNALunit: " << annexBStatsTotal_VCL.m_numBytesInNALUnit << endl
<< " num_bytes(trailing_zero_8bits): " << annexBStatsTotal_VCL.m_numTrailingZero8BitsBytes << endl
;
cout << "Summary(Filler): " << endl
<< " num_bytes(leading_zero_8bits): " << annexBStatsTotal_Filler.m_numLeadingZero8BitsBytes << endl
<< " num_bytes(zero_byte): " << annexBStatsTotal_Filler.m_numZeroByteBytes << endl
<< " num_bytes(start_code_prefix_one_3bytes): " << annexBStatsTotal_Filler.m_numStartCodePrefixBytes << endl
<< " NumBytesInNALunit: " << annexBStatsTotal_Filler.m_numBytesInNALUnit << endl
<< " num_bytes(trailing_zero_8bits): " << annexBStatsTotal_Filler.m_numTrailingZero8BitsBytes << endl
;
cout << "Summary(Other): " << endl
<< " num_bytes(leading_zero_8bits): " << annexBStatsTotal_Other.m_numLeadingZero8BitsBytes << endl
<< " num_bytes(zero_byte): " << annexBStatsTotal_Other.m_numZeroByteBytes << endl
<< " num_bytes(start_code_prefix_one_3bytes): " << annexBStatsTotal_Other.m_numStartCodePrefixBytes << endl
<< " NumBytesInNALunit: " << annexBStatsTotal_Other.m_numBytesInNALUnit << endl
<< " num_bytes(trailing_zero_8bits): " << annexBStatsTotal_Other.m_numTrailingZero8BitsBytes << endl
;
/* The first such type of bitstream, called Type I bitstream, is a
* NAL unit stream containing only the VCL NAL units and filler data
* NAL units for all access units in the bitstream.
*/
unsigned totalBytes_T1HRD = annexBStatsTotal_VCL.m_numBytesInNALUnit + annexBStatsTotal_Filler.m_numBytesInNALUnit;
/*The second type of bitstream, called a Type II bitstream,
* contains, in addition to the VCL NAL units and filler data NAL
* units for all access units in the bitstream, at least one of
* the following:
* (a) additional non-VCL NAL units other than filler data NAL
* units.
*/
unsigned totalBytes_T2aHRD = annexBStatsTotal.m_numBytesInNALUnit;
/* (b) all leading_zero_8bits, zero_byte,
* start_code_prefix_one_3bytes, and trailing_zero_8bits syntax
* elements that form a byte stream from the NAL unit stream (as
* specified in Annex B)
*/
unsigned totalBytes_T2abHRD = 0;
totalBytes_T2abHRD += annexBStatsTotal.m_numLeadingZero8BitsBytes;
totalBytes_T2abHRD += annexBStatsTotal.m_numZeroByteBytes;
totalBytes_T2abHRD += annexBStatsTotal.m_numStartCodePrefixBytes;
totalBytes_T2abHRD += annexBStatsTotal.m_numBytesInNALUnit;
totalBytes_T2abHRD += annexBStatsTotal.m_numTrailingZero8BitsBytes;
cout << "Totals (bytes):" << endl;
cout << " Type1 HRD: " << totalBytes_T1HRD << endl;
cout << " Type2 HRD: " << totalBytes_T2aHRD << endl;
cout << " Type2b HRD: " << totalBytes_T2abHRD << endl;
return 0;
}
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