libcaption_stauts_t sei_from_scc(sei_t* sei, const scc_t* scc)
{
unsigned int i;
cea708_t cea708;
cea708_init(&cea708, sei->timestamp); // set up a new popon frame
for (i = 0; i < scc->cc_size; ++i) {
if (31 == cea708.user_data.cc_count) {
sei_append_708(sei, &cea708);
}
cea708_add_cc_data(&cea708, 1, cc_type_ntsc_cc_field_1, scc->cc_data[i]);
}
if (0 != cea708.user_data.cc_count) {
sei_append_708(sei, &cea708);
}
return LIBCAPTION_OK;
}
// This should be moved to 708.c
// This works for popon, but bad for paint on and roll up
// Please understand this function before you try to use it, setting null values have different effects than you may assume
void sei_encode_eia608 (sei_t* sei, cea708_t* cea708, uint16_t cc_data)
{
// This one is full, flush and init a new one
// shoudl this be 32? I cant remember
if (31 == cea708->user_data.cc_count) {
sei_append_708 (sei,cea708);
}
if (0 == cea708->user_data.cc_count) { // This is a new 708 header, but a continuation of a 608 stream
cea708_add_cc_data (cea708, 1, cc_type_ntsc_cc_field_1, eia608_control_command (eia608_control_resume_caption_loading, DEFAULT_CHANNEL));
}
if (0 == cc_data) { // Finished
sei_encode_eia608 (sei,cea708,eia608_control_command (eia608_control_end_of_caption, DEFAULT_CHANNEL));
sei_append_708 (sei,cea708);
return;
}
cea708_add_cc_data (cea708, 1, cc_type_ntsc_cc_field_1, cc_data);
}
libcaption_stauts_t sei_from_caption_clear(sei_t* sei)
{
cea708_t cea708;
cea708_init(&cea708, sei->timestamp); // set up a new popon frame
cea708_add_cc_data(&cea708, 1, cc_type_ntsc_cc_field_1, eia608_control_command(eia608_control_end_of_caption, DEFAULT_CHANNEL));
cea708_add_cc_data(&cea708, 1, cc_type_ntsc_cc_field_1, eia608_control_command(eia608_control_end_of_caption, DEFAULT_CHANNEL));
cea708_add_cc_data(&cea708, 1, cc_type_ntsc_cc_field_1, eia608_control_command(eia608_control_erase_non_displayed_memory, DEFAULT_CHANNEL));
cea708_add_cc_data(&cea708, 1, cc_type_ntsc_cc_field_1, eia608_control_command(eia608_control_erase_non_displayed_memory, DEFAULT_CHANNEL));
cea708_add_cc_data(&cea708, 1, cc_type_ntsc_cc_field_1, eia608_control_command(eia608_control_erase_display_memory, DEFAULT_CHANNEL));
cea708_add_cc_data(&cea708, 1, cc_type_ntsc_cc_field_1, eia608_control_command(eia608_control_erase_display_memory, DEFAULT_CHANNEL));
sei_append_708(sei, &cea708);
return LIBCAPTION_OK;
}
