void decode_708 (const unsigned char *data, int datalength, cc708_service_decoder* decoders)
{
/* Note: The data has this format:
1 byte for cc_valid and cc_type
2 bytes for the actual data */
for (int i=0; i<datalength; i+=3)
{
unsigned char cc_valid=data[i] & 0x04;
unsigned char cc_type=data[i] & 0x03;
switch (cc_type)
{
case 0:
// only use 608 as fallback
if (!decoders[0].parent->m_seen708)
decode_cc(decoders[0].parent->m_cc608decoder, (uint8_t*)data+i, 3);
break;
case 2:
if (cc_valid==0) // This ends the previous packet if complete
{
if (check_current_packet_complete(decoders))
{
process_current_packet(decoders);
}
}
else
{
if (decoders[0].parent->m_current_packet_length < 254)
{
decoders[0].parent->m_current_packet[decoders[0].parent->m_current_packet_length++]=data[i+1];
decoders[0].parent->m_current_packet[decoders[0].parent->m_current_packet_length++]=data[i+2];
}
}
break;
case 3:
process_current_packet(decoders);
if (cc_valid)
{
if (decoders[0].parent->m_current_packet_length < 128)
{
decoders[0].parent->m_current_packet[decoders[0].parent->m_current_packet_length++]=data[i+1];
decoders[0].parent->m_current_packet[decoders[0].parent->m_current_packet_length++]=data[i+2];
}
}
break;
default:
break;
}
}
}
int CDVDOverlayCodecCC::Decode(BYTE* pData, int iSize, double pts, double duration)
{
// minimum amount of data is even more for cc
decode_cc(m_cc_decoder, pData, iSize);
if (iSize >= 2)
{
Flush();
m_pCurrentOverlay = new CDVDOverlayText();
cc_buffer_t* data = &m_cc_decoder->on_buf->channel[0];
for (int r = 0; r < CC_ROWS; r++)
{
if (data->rows[r].num_chars > 0)
{
char row_text[CC_COLUMNS + 1];
row_text[0] = 0;
for (int c = 0; c < data->rows[r].num_chars; c++)
{
row_text[c] = data->rows[r].cells[c].c;
}
row_text[data->rows[r].num_chars] = '\n';
row_text[data->rows[r].num_chars + 1] = 0;
CDVDOverlayText::CElementText* pText = new CDVDOverlayText::CElementText(row_text);
m_pCurrentOverlay->AddElement(pText);
}
}
return OC_OVERLAY;
/*
m_pCurrentOverlay->iPTSStartTime = pts;
m_pCurrentOverlay->iPTSStopTime = 0LL;
char test[64];
sprintf(test, "cc data : %"PRId64, pts);
CDVDOverlayText::CElementText* pText = new CDVDOverlayText::CElementText(test);
m_pCurrentOverlay->AddElement(pText);
return OC_OVERLAY;*/
}
return OC_BUFFER;
}
