// 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;
}
void handle_708_DFx_DefineWindow (cc708_service_decoder *decoder, int window, unsigned char *data)
{
if (decoder->windows[window].is_defined &&
memcmp (decoder->windows[window].commands, data+1, 6)==0)
{
return;
}
decoder->windows[window].number=window;
int priority = (data[1] ) & 0x7;
int col_lock = (data[1]>>3) & 0x1;
int row_lock = (data[1]>>4) & 0x1;
int visible = (data[1]>>5) & 0x1;
int anchor_vertical = data[2] & 0x7f;
int relative_pos = (data[2]>>7);
int anchor_horizontal = data[3];
int row_count = data[4] & 0xf;
int anchor_point = data[4]>>4;
int col_count = data[5] & 0x3f;
int pen_style = data[6] & 0x7;
int win_style = (data[6]>>3) & 0x7;
col_count++; // These increments seems to be needed but no documentation
row_count++; // backs it up
if (anchor_vertical > I708_SCREENGRID_ROWS)
anchor_vertical = I708_SCREENGRID_ROWS;
decoder->windows[window].priority=priority;
decoder->windows[window].col_lock=col_lock;
decoder->windows[window].row_lock=row_lock;
decoder->windows[window].visible=visible;
decoder->windows[window].anchor_vertical=anchor_vertical;
decoder->windows[window].relative_pos=relative_pos;
decoder->windows[window].anchor_horizontal=anchor_horizontal;
decoder->windows[window].row_count=row_count;
decoder->windows[window].anchor_point=anchor_point;
decoder->windows[window].col_count=col_count;
decoder->windows[window].pen_style=pen_style;
decoder->windows[window].win_style=win_style;
if (!decoder->windows[window].is_defined)
{
// If the window is being created, all character positions in the window
// are set to the fill color...
//! @todo COLORS
// ...and the pen location is set to (0,0)
decoder->windows[window].pen_column=0;
decoder->windows[window].pen_row=0;
if (!decoder->windows[window].memory_reserved)
{
for (int i=0;i<=I708_MAX_ROWS;i++)
{
decoder->windows[window].rows[i]=(unsigned char *) malloc (I708_MAX_COLUMNS+1);
if (decoder->windows[window].rows[i]==NULL) // Great
{
decoder->windows[window].is_defined=0;
decoder->current_window=-1;
for (int j=0;j<i;j++)
free (decoder->windows[window].rows[j]);
return; //! @todo Warn somehow
}
}
decoder->windows[window].memory_reserved=1;
}
decoder->windows[window].is_defined=1;
memset(&decoder->windows[window].attribs, 0, sizeof(e708Window_attribs));
clearWindowText (&decoder->windows[window]);
}
// ...also makes the defined windows the current window (setCurrentWindow)
handle_708_CWx_SetCurrentWindow (decoder, window);
memcpy (decoder->windows[window].commands, data+1, 6);
}
void handle_708_DFx_DefineWindow (cc708_service_decoder *decoder, int window, unsigned char *data)
{
printf (" Entry in handle_708_DFx_DefineWindow, window [%d], attributes: \n", window);
if (decoder->windows[window].is_defined &&
memcmp (decoder->windows[window].commands, data+1, 6)==0)
{
// When a decoder receives a DefineWindow command for an existing window, the
// command is to be ignored if the command parameters are unchanged from the
// previous window definition.
printf (" Repeated window definition, ignored.\n");
return;
}
decoder->windows[window].number=window;
int priority = (data[1] ) & 0x7;
int col_lock = (data[1]>>3) & 0x1;
int row_lock = (data[1]>>4) & 0x1;
int visible = (data[1]>>5) & 0x1;
int anchor_vertical = data[2] & 0x7f;
int relative_pos = (data[2]>>7);
int anchor_horizontal = data[3];
int row_count = data[4] & 0xf;
int anchor_point = data[4]>>4;
int col_count = data[5] & 0x3f;
int pen_style = data[6] & 0x7;
int win_style = (data[6]>>3) & 0x7;
printf (" Priority: [%d] Column lock: [%3s] Row lock: [%3s]\n",
priority, col_lock?"Yes": "No", row_lock?"Yes": "No");
printf (" Visible: [%3s] Anchor vertical: [%2d] Relative pos: [%s]\n",
visible?"Yes": "No", anchor_vertical, relative_pos?"Yes": "No");
printf (" Anchor horizontal: [%3d] Row count: [%2d]+1 Anchor point: [%d]\n",
anchor_horizontal, row_count, anchor_point);
printf (" Column count: [%2d]1 Pen style: [%d] Win style: [%d]\n",
col_count, pen_style, win_style);
col_count++; // These increments seems to be needed but no documentation
row_count++; // backs it up
decoder->windows[window].priority=priority;
decoder->windows[window].col_lock=col_lock;
decoder->windows[window].row_lock=row_lock;
decoder->windows[window].visible=visible;
decoder->windows[window].anchor_vertical=anchor_vertical;
decoder->windows[window].relative_pos=relative_pos;
decoder->windows[window].anchor_horizontal=anchor_horizontal;
decoder->windows[window].row_count=row_count;
decoder->windows[window].anchor_point=anchor_point;
decoder->windows[window].col_count=col_count;
decoder->windows[window].pen_style=pen_style;
decoder->windows[window].win_style=win_style;
if (!decoder->windows[window].is_defined)
{
// If the window is being created, all character positions in the window
// are set to the fill color...
// TODO: COLORS
// ...and the pen location is set to (0,0)
decoder->windows[window].pen_column=0;
decoder->windows[window].pen_row=0;
if (!decoder->windows[window].memory_reserved)
{
for (int i=0;i<=I708_MAX_ROWS;i++)
{
decoder->windows[window].rows[i]=(unsigned char *) malloc (I708_MAX_COLUMNS+1);
if (decoder->windows[window].rows[i]==NULL) // Great
{
decoder->windows[window].is_defined=0;
decoder->current_window=-1;
for (int j=0;j<i;j++)
free (decoder->windows[window].rows[j]);
return; // TODO: Warn somehow
}
}
decoder->windows[window].memory_reserved=1;
}
decoder->windows[window].is_defined=1;
clearWindowText (&decoder->windows[window]);
}
else
{
// Specs unclear here: Do we need to delete the text in the existing window?
// We do this because one of the sample files demands it.
// clearWindowText (&decoder->windows[window]);
}
// ...also makes the defined windows the current window (setCurrentWindow)
handle_708_CWx_SetCurrentWindow (decoder, window);
memcpy (decoder->windows[window].commands, data+1, 6);
}