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conhost: Implement IOCTL_CONDRV_WRITE_OUTPUT. 

Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Jacek Caban 2020-08-28 14:25:37 +02:00 committed by Alexandre Julliard
parent 151b42953b
commit 01c05387ce
1 changed files with 82 additions and 0 deletions
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82
programs/conhost/conhost.c
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@ -469,6 +469,82 @@ static NTSTATUS set_output_info( struct screen_buffer *screen_buffer,
return STATUS_SUCCESS;
}
static NTSTATUS write_output( struct screen_buffer *screen_buffer, const struct condrv_output_params *params,
size_t in_size, size_t *out_size )
{
unsigned int i, entry_size, entry_cnt, x, y;
char_info_t *dest;
char *src;
entry_size = params->mode == CHAR_INFO_MODE_TEXTATTR ? sizeof(char_info_t) : sizeof(WCHAR);
entry_cnt = (in_size - sizeof(*params)) / entry_size;
TRACE( "(%u,%u) cnt %u\n", params->x, params->y, entry_cnt );
if (params->x >= screen_buffer->width)
{
*out_size = 0;
return STATUS_SUCCESS;
}
for (i = 0, src = (char *)(params + 1); i < entry_cnt; i++, src += entry_size)
{
if (params->width)
{
x = params->x + i % params->width;
y = params->y + i / params->width;
if (x >= screen_buffer->width) continue;
}
else
{
x = (params->x + i) % screen_buffer->width;
y = params->y + (params->x + i) / screen_buffer->width;
}
if (y >= screen_buffer->height) break;
dest = &screen_buffer->data[y * screen_buffer->width + x];
switch(params->mode)
{
case CHAR_INFO_MODE_TEXT:
dest->ch = *(const WCHAR *)src;
break;
case CHAR_INFO_MODE_ATTR:
dest->attr = *(const unsigned short *)src;
break;
case CHAR_INFO_MODE_TEXTATTR:
*dest = *(const char_info_t *)src;
break;
case CHAR_INFO_MODE_TEXTSTDATTR:
dest->ch = *(const WCHAR *)src;
dest->attr = screen_buffer->attr;
break;
default:
return STATUS_INVALID_PARAMETER;
}
}
if (*out_size == sizeof(SMALL_RECT))
{
SMALL_RECT *region;
unsigned int width = params->width;
x = params->x;
y = params->y;
if (!(region = alloc_ioctl_buffer( sizeof(*region )))) return STATUS_NO_MEMORY;
region->Left = x;
region->Top = y;
region->Right = min( x + width, screen_buffer->width ) - 1;
region->Bottom = min( y + entry_cnt / width, screen_buffer->height ) - 1;
}
else
{
DWORD *result;
if (!(result = alloc_ioctl_buffer( sizeof(*result )))) return STATUS_NO_MEMORY;
*result = i;
}
return STATUS_SUCCESS;
}
static NTSTATUS set_console_title( struct console *console, const WCHAR *in_title, size_t size )
{
WCHAR *title = NULL;
@ -517,6 +593,12 @@ static NTSTATUS screen_buffer_ioctl( struct screen_buffer *screen_buffer, unsign
TRACE( "set %x mode\n", screen_buffer->mode );
return STATUS_SUCCESS;
case IOCTL_CONDRV_WRITE_OUTPUT:
if ((*out_size != sizeof(DWORD) && *out_size != sizeof(SMALL_RECT)) ||
in_size < sizeof(struct condrv_output_params))
return STATUS_INVALID_PARAMETER;
return write_output( screen_buffer, in_data, in_size, out_size );
case IOCTL_CONDRV_GET_OUTPUT_INFO:
if (in_size || *out_size < sizeof(struct condrv_output_info)) return STATUS_INVALID_PARAMETER;
return get_output_info( screen_buffer, out_size );