void cc708_reset()
{
printf (">>> Entry in cc708_reset()\n");
// Clear states of decoders
cc708_service_reset(&decoders[0]);
cc708_service_reset(&decoders[1]);
// Empty packet buffer
clear_packet();
last_seq=-1;
resets_708++;
}
void process_service_block (cc708_service_decoder *decoder, unsigned char *data, int data_length)
{
int i=0;
while (i<data_length)
{
int used=-1;
if (data[i]!=EXT1)
{
// Group C0
if (/* data[i]>=0x00 && */ data[i]<=0x1F) // Comment to silence warning
{
used=handle_708_C0 (decoder,data+i,data_length-i);
}
// Group G0
else if (data[i]>=0x20 && data[i]<=0x7F)
{
used=handle_708_G0 (decoder,data+i,data_length-i);
}
// Group C1
else if (data[i]>=0x80 && data[i]<=0x9F)
{
used=handle_708_C1 (decoder,data+i,data_length-i);
}
// Group C2
else
used=handle_708_G1 (decoder,data+i,data_length-i);
if (used==-1)
{
//! @todo Not sure if a local reset is going to be helpful here.
cc708_service_reset (decoder);
return;
}
}
else // Use extended set
{
used=handle_708_extended_char (decoder, data+i+1,data_length-1);
used++; // Since we had EXT1
}
i+=used;
}
// update rollup windows
int update = 0;
for (int i = 0; i<I708_MAX_WINDOWS; i++)
{
if (decoder->windows[i].is_defined && decoder->windows[i].visible &&
(decoder->windows[i].anchor_point == anchorpoint_bottom_left ||
decoder->windows[i].anchor_point == anchorpoint_bottom_center))
{
update++;
break;
}
}
if (update)
{
updateScreen(decoder);
}
}
void cc708_reset(cc708_service_decoder *decoders)
{
for (int i = 0; i<CCX_DECODERS_708_MAX_SERVICES; i++)
{
cc708_service_reset (&decoders[i]);
}
// Empty packet buffer
clear_packet(&decoders[0]);
decoders[0].parent->m_last_seq = -1;
}
void ccx_decoders_708_init(cc708_service_decoder *decoders, void (*handler)(int service, void *userdata), void *userdata, CDecoderCC708 *parent)
{
for (int i = 0; i<CCX_DECODERS_708_MAX_SERVICES; i++)
{
cc708_service_reset (&decoders[i]);
decoders[i].srt_counter=0;
decoders[i].service = i;
decoders[i].callback = handler;
decoders[i].userdata = userdata;
decoders[i].parent = parent;
}
decoders[0].parent->m_cc608decoder->callback = handler;
decoders[0].parent->m_cc608decoder->userdata = userdata;
decoders[0].parent->m_current_packet_length = 0;
decoders[0].parent->m_last_seq = -1;
decoders[0].parent->m_seen708 = false;
decoders[0].parent->m_seen608 = false;
}
void process_service_block (cc708_service_decoder *decoder, unsigned char *data, int data_length)
{
int i=0;
while (i<data_length)
{
if (data[i]==EXT1) // Use extended set
{
handle_708_extended_char (decoder, data[i+1]);
i+=2;
continue;
}
int used=-1;
// Group C0
if (/* data[i]>=0x00 && */ data[i]<=0x1F) // Comment to silence warning
{
used=handle_708_C0 (decoder,data+i,data_length-i);
}
// Group G0
else if (data[i]>=0x20 && data[i]<=0x7F)
{
used=handle_708_G0 (decoder,data+i,data_length-i);
}
// Group C1
else if (data[i]>=0x80 && data[i]<=0x9F)
{
used=handle_708_C1 (decoder,data+i,data_length-i);
}
// Group C2
else
used=handle_708_G1 (decoder,data+i,data_length-i);
if (used==-1)
{
printf ("There was a problem handling the data. Reseting service decoder\n");
// TODO: Not sure if a local reset is going to be helpful here.
cc708_service_reset (decoder);
return;
}
i+=used;
}
}
// C1 Code Set - Captioning Commands Control Codes
int handle_708_C1 (cc708_service_decoder *decoder, unsigned char *data, int data_length)
{
struct S_COMMANDS_C1 com=COMMANDS_C1[data[0]-0x80];
if (com.length>data_length)
{
return -1;
}
switch (com.code)
{
case CW0: /* SetCurrentWindow */
case CW1:
case CW2:
case CW3:
case CW4:
case CW5:
case CW6:
case CW7:
handle_708_CWx_SetCurrentWindow (decoder, com.code-CW0); /* Window 0 to 7 */
break;
case CLW:
handle_708_CLW_ClearWindows (decoder, data[1]);
break;
case DSW:
handle_708_DSW_DisplayWindows (decoder, data[1]);
break;
case HDW:
handle_708_HDW_HideWindows (decoder, data[1]);
break;
case TGW:
handle_708_TGW_ToggleWindows (decoder, data[1]);
break;
case DLW:
handle_708_DLW_DeleteWindows (decoder, data[1]);
break;
case DLY:
handle_708_DLY_Delay (decoder, data[1]);
break;
case DLC:
handle_708_DLC_DelayCancel (decoder);
break;
case RST:
cc708_service_reset(decoder);
break;
case SPA:
handle_708_SPA_SetPenAttributes (decoder, data);
break;
case SPC:
handle_708_SPC_SetPenColor (decoder, data);
break;
case SPL:
handle_708_SPL_SetPenLocation (decoder, data);
break;
case RSV93:
case RSV94:
case RSV95:
case RSV96:
break;
case SWA:
handle_708_SWA_SetWindowAttributes (decoder, data);
break;
case DF0:
case DF1:
case DF2:
case DF3:
case DF4:
case DF5:
case DF6:
case DF7:
handle_708_DFx_DefineWindow (decoder, com.code-DF0, data); /* Window 0 to 7 */
break;
default:
break;
}
return com.length;
}
int handle_708_C1 (cc708_service_decoder *decoder, unsigned char *data, int data_length)
{
S_COMMANDS_C1 com=COMMANDS_C1[data[0]-0x80];
printf ("%s | C1: [%02X] [%s] [%s] (%d)\n",
print_mstime(get_fts()),
data[0],com.name,com.description, com.length);
if (com.length>data_length)
{
printf ("C1: Warning: Not enough bytes for command.\n");
return -1;
}
switch (com.code)
{
case CW0: /* SetCurrentWindow */
case CW1:
case CW2:
case CW3:
case CW4:
case CW5:
case CW6:
case CW7:
handle_708_CWx_SetCurrentWindow (decoder, com.code-CW0); /* Window 0 to 7 */
break;
case CLW:
handle_708_CLW_ClearWindows (decoder, data[1]);
break;
case DSW:
handle_708_DSW_DisplayWindows (decoder, data[1]);
break;
case HDW:
handle_708_HDW_HideWindows (decoder, data[1]);
break;
case TGW:
handle_708_TGW_ToggleWindows (decoder, data[1]);
break;
case DLW:
handle_708_DLW_DeleteWindows (decoder, data[1]);
break;
case DLY:
handle_708_DLY_Delay (decoder, data[1]);
break;
case DLC:
handle_708_DLC_DelayCancel (decoder);
break;
case RST:
cc708_service_reset(decoder);
break;
case SPA:
handle_708_SPA_SetPenAttributes (decoder, data);
break;
case SPC:
handle_708_SPC_SetPenColor (decoder, data);
break;
case SPL:
handle_708_SPL_SetPenLocation (decoder, data);
break;
case RSV93:
case RSV94:
case RSV95:
case RSV96:
printf ("Warning, found Reserved codes, ignored.\n");
break;
case SWA:
handle_708_SWA_SetWindowAttributes (decoder, data);
break;
case DF0:
case DF1:
case DF2:
case DF3:
case DF4:
case DF5:
case DF6:
case DF7:
handle_708_DFx_DefineWindow (decoder, com.code-DF0, data); /* Window 0 to 7 */
break;
default:
printf ("BUG: Unhandled code in handle_708_C1.\n");
break;
}
return com.length;
}