/*----------------------------------------------------------------------
| AP4_AvccAtom::AP4_AvccAtom
+---------------------------------------------------------------------*/
AP4_AvccAtom::AP4_AvccAtom(AP4_UI32 size, const AP4_UI08* payload) :
AP4_Atom(AP4_ATOM_TYPE_AVCC, size)
{
// make a copy of our configuration bytes
unsigned int payload_size = size-AP4_ATOM_HEADER_SIZE;
m_RawBytes.SetData(payload, payload_size);
// parse the payload
m_ConfigurationVersion = payload[0];
m_Profile = payload[1];
m_ProfileCompatibility = payload[2];
m_Level = payload[3];
m_NaluLengthSize = 1+(payload[4]&3);
AP4_UI08 num_seq_params = payload[5]&31;
m_SequenceParameters.EnsureCapacity(num_seq_params);
unsigned int cursor = 6;
for (unsigned int i=0; i<num_seq_params; i++) {
m_SequenceParameters.Append(AP4_DataBuffer());
AP4_UI16 param_length = AP4_BytesToInt16BE(&payload[cursor]);
m_SequenceParameters[i].SetData(&payload[cursor]+2, param_length);
cursor += 2+param_length;
}
AP4_UI08 num_pic_params = payload[cursor++];
m_PictureParameters.EnsureCapacity(num_pic_params);
for (unsigned int i=0; i<num_pic_params; i++) {
m_PictureParameters.Append(AP4_DataBuffer());
AP4_UI16 param_length = AP4_BytesToInt16BE(&payload[cursor]);
m_PictureParameters[i].SetData(&payload[cursor]+2, param_length);
cursor += 2+param_length;
}
}
/*----------------------------------------------------------------------
| AP4_AvccAtom::AP4_AvccAtom
+---------------------------------------------------------------------*/
AP4_AvccAtom::AP4_AvccAtom(AP4_UI32 size, AP4_ByteStream& stream) :
AP4_Atom(AP4_ATOM_TYPE_AVCC, size)
{
// make a copy of our configuration bytes
AP4_Position start_pos;
stream.Tell(start_pos);
m_RawBytes.SetDataSize(size);
stream.Read(m_RawBytes.UseData(), size);
stream.Seek(start_pos);
stream.ReadUI08(m_ConfigurationVersion);
stream.ReadUI08(m_Profile);
stream.ReadUI08(m_ProfileCompatibility);
stream.ReadUI08(m_Level);
AP4_UI08 length_size_minus_one;
stream.ReadUI08(length_size_minus_one);
m_NaluLengthSize = 1+(length_size_minus_one&3);
AP4_UI08 num_seq_params;
stream.ReadUI08(num_seq_params);
num_seq_params &= 31;
m_SequenceParameters.EnsureCapacity(num_seq_params);
for (unsigned int i=0; i<num_seq_params; i++) {
m_SequenceParameters.Append(AP4_DataBuffer());
AP4_UI16 param_length;
stream.ReadUI16(param_length);
m_SequenceParameters[i].SetDataSize(param_length);
stream.Read(m_SequenceParameters[i].UseData(), param_length);
}
AP4_UI08 num_pic_params;
stream.ReadUI08(num_pic_params);
for (unsigned int i=0; i<num_pic_params; i++) {
m_PictureParameters.Append(AP4_DataBuffer());
AP4_UI16 param_length;
stream.ReadUI16(param_length);
m_PictureParameters[i].SetDataSize(param_length);
stream.Read(m_PictureParameters[i].UseData(), param_length);
}
}
