void xds_debug_test()
{
process_xds_bytes (0x05,0x02);
process_xds_bytes (0x20,0x20);
do_end_of_xds (0x2a);
}
void xds_debug_test(struct ccx_decoders_xds_context *ctx, struct cc_subtitle *sub)
{
process_xds_bytes (ctx, 0x05, 0x02);
process_xds_bytes (ctx, 0x20, 0x20);
do_end_of_xds (sub, ctx, 0x2a);
}
void xds_cea608_test()
{
/* This test is the sample data that comes in CEA-608. It sets the program name
to be "Star Trek". The checksum is 0x1d and the validation must succeed. */
process_xds_bytes (0x01,0x03);
process_xds_bytes (0x53,0x74);
process_xds_bytes (0x61,0x72);
process_xds_bytes (0x20,0x54);
process_xds_bytes (0x72,0x65);
process_xds_bytes (0x02,0x03);
process_xds_bytes (0x02,0x03);
process_xds_bytes (0x6b,0x00);
do_end_of_xds (0x1d);
}
void xds_cea608_test(struct ccx_decoders_xds_context *ctx, struct cc_subtitle *sub)
{
/* This test is the sample data that comes in CEA-608. It sets the program name
to be "Star Trek". The checksum is 0x1d and the validation must succeed. */
process_xds_bytes (ctx, 0x01,0x03);
process_xds_bytes (ctx, 0x53,0x74);
process_xds_bytes (ctx, 0x61,0x72);
process_xds_bytes (ctx, 0x20,0x54);
process_xds_bytes (ctx, 0x72,0x65);
process_xds_bytes (ctx, 0x02,0x03);
process_xds_bytes (ctx, 0x02,0x03);
process_xds_bytes (ctx, 0x6b,0x00);
do_end_of_xds (sub, ctx, 0x1d);
}
/* If wb is NULL, then only XDS will be processed */
int process608(const unsigned char *data, int length, void *private_data, struct cc_subtitle *sub)
{
struct ccx_decoder_608_report *report = NULL;
ccx_decoder_608_context *context = private_data;
static int textprinted = 0;
int i;
if (context)
{
report = &context->report;
context->bytes_processed_608 += length;
}
if (!data)
{
return -1;
}
for (i=0; i < length; i=i+2)
{
unsigned char hi, lo;
int wrote_to_screen=0;
hi = data[i] & 0x7F; // Get rid of parity bit
lo = data[i+1] & 0x7F; // Get rid of parity bit
if (hi==0 && lo==0) // Just padding
continue;
// printf ("\r[%02X:%02X]\n",hi,lo);
if (hi>=0x10 && hi<=0x1e) {
int ch = (hi<=0x17)? 1 : 2;
if (context == NULL || context->my_field == 2) // Originally: current_field from sequencing.c. Seems to be just to change channel, so context->my_field seems good.
ch+=2;
if(report)
report->cc_channels[ch - 1] = 1;
}
if (hi >= 0x01 && hi <= 0x0E && (context == NULL || context->my_field == 2)) // XDS can only exist in field 2.
{
if (context)
context->channel = 3;
if (!in_xds_mode)
{
ts_start_of_xds=get_fts();
in_xds_mode=1;
}
if(report)
report->xds=1;
}
if (hi == 0x0F && in_xds_mode && (context == NULL || context->my_field == 2)) // End of XDS block
{
in_xds_mode=0;
do_end_of_xds (sub, lo);
if (context)
context->channel = context->new_channel; // Switch from channel 3
continue;
}
if (hi>=0x10 && hi<=0x1F) // Non-character code or special/extended char
// http://www.geocities.com/mcpoodle43/SCC_TOOLS/DOCS/CC_CODES.HTML
// http://www.geocities.com/mcpoodle43/SCC_TOOLS/DOCS/CC_CHARS.HTML
{
// We were writing characters before, start a new line for
// diagnostic output from disCommand()
if (textprinted == 1 )
{
ccx_common_logging.debug_ftn(CCX_DMT_DECODER_608, "\n");
textprinted = 0;
}
if (!context || context->my_field == 2)
in_xds_mode=0; // Back to normal (CEA 608-8.6.2)
if (!context) // Not XDS and we don't have a writebuffer, nothing else would have an effect
continue;
if (context->last_c1 == hi && context->last_c2 == lo)
{
// Duplicate dual code, discard. Correct to do it only in
// non-XDS, XDS codes shall not be repeated.
ccx_common_logging.debug_ftn(CCX_DMT_DECODER_608, "Skipping command %02X,%02X Duplicate\n", hi, lo);
// Ignore only the first repetition
context->last_c1=-1;
context->last_c2 = -1;
continue;
}
context->last_c1 = hi;
context->last_c2 = lo;
wrote_to_screen = disCommand(hi, lo, context, sub);
if(sub->got_output)
break;
}
else
{
if (in_xds_mode && (context == NULL || context->my_field == 2))
{
process_xds_bytes (hi,lo);
continue;
}
if (!context) // No XDS code after this point, and user doesn't want captions.
continue;
context->last_c1 = -1;
context->last_c2 = -1;
if (hi>=0x20) // Standard characters (always in pairs)
{
// Only print if the channel is active
if (context->channel != context->my_channel)
continue;
if( textprinted == 0 )
{
ccx_common_logging.debug_ftn(CCX_DMT_DECODER_608, "\n");
textprinted = 1;
}
handle_single(hi, context);
handle_single(lo, context);
wrote_to_screen=1;
context->last_c1 = 0;
context->last_c2 = 0;
}
if (!textprinted && context->channel == context->my_channel)
{ // Current FTS information after the characters are shown
ccx_common_logging.debug_ftn(CCX_DMT_DECODER_608, "Current FTS: %s\n", print_mstime(get_fts()));
//printf(" N:%u", unsigned(fts_now) );
//printf(" G:%u", unsigned(fts_global) );
//printf(" F:%d %d %d %d\n",
// current_field, cb_field1, cb_field2, cb_708 );
}
if (wrote_to_screen && context->settings->direct_rollup && // If direct_rollup is enabled and
(context->mode == MODE_FAKE_ROLLUP_1 || // we are in rollup mode, write now.
context->mode == MODE_ROLLUP_2 ||
context->mode == MODE_ROLLUP_3 ||
context->mode == MODE_ROLLUP_4))
{
// We don't increase screenfuls_counter here.
write_cc_buffer(context, sub);
context->current_visible_start_ms = get_visible_start();
}
}
if (wrote_to_screen && context->cc_to_stdout)
fflush (stdout);
} // for
return i;
}
