/**
* marshal a single SEI message sei, storing the marshalled representation
* in bitstream bs.
*/
void writeSEImessage(TComBitIf& bs, const SEI& sei)
{
/* calculate how large the payload data is */
/* TODO: this would be far nicer if it used vectored buffers */
TComBitCounter bs_count;
bs_count.resetBits();
writeSEIpayloadData(bs_count, sei);
unsigned payload_data_num_bits = bs_count.getNumberOfWrittenBits();
assert(0 == payload_data_num_bits % 8);
unsigned payloadType = sei.payloadType();
for (; payloadType >= 0xff; payloadType -= 0xff)
{
bs.write(0xff, 8);
}
bs.write(payloadType, 8);
unsigned payloadSize = payload_data_num_bits/8;
for (; payloadSize >= 0xff; payloadSize -= 0xff)
{
bs.write(0xff, 8);
}
bs.write(payloadSize, 8);
/* payloadData */
writeSEIpayloadData(bs, sei);
}
/**
* marshal a picture_digest SEI message, storing the marshalled
* representation in bitstream bs.
*/
static void writeSEIpictureDigest(TComBitIf& bs, const SEIpictureDigest& sei)
{
bs.write(sei.method, 8);
for (unsigned i = 0; i < 16; i++)
{
bs.write(sei.digest[i], 8);
}
}
/**
* marshal a user_data_unregistered SEI message sei, storing the marshalled
* representation in bitstream bs.
*/
static void writeSEIuserDataUnregistered(TComBitIf& bs, const SEIuserDataUnregistered &sei)
{
for (unsigned i = 0; i < 16; i++)
{
bs.write(sei.uuid_iso_iec_11578[i], 8);
}
for (unsigned i = 0; i < sei.userDataLength; i++)
{
bs.write(sei.userData[i], 8);
}
}
/**
* marshal a picture_digest SEI message, storing the marshalled
* representation in bitstream bs.
*/
static void writeSEIpictureDigest(TComBitIf& bs, const SEIpictureDigest& sei)
{
int numChar=0;
bs.write(sei.method, 8);
if(sei.method == SEIpictureDigest::MD5)
{
numChar = 16;
}
else if(sei.method == SEIpictureDigest::CRC)
{
numChar = 2;
}
else if(sei.method == SEIpictureDigest::CHECKSUM)
{
numChar = 4;
}
for(int yuvIdx = 0; yuvIdx < 3; yuvIdx++)
{
for (unsigned i = 0; i < numChar; i++)
{
bs.write(sei.digest[yuvIdx][i], 8);
}
}
}