Jacek Caban : conhost: Implement IOCTL_CONDRV_READ_OUTPUT.
Alexandre Julliard
julliard at winehq.org
Fri Aug 28 15:17:58 CDT 2020
Module: wine
Branch: master
Commit: f4661f1b38c479bd08baee93d9ddb1f9e93c173d
URL: https://source.winehq.org/git/wine.git/?a=commit;h=f4661f1b38c479bd08baee93d9ddb1f9e93c173d
Author: Jacek Caban <jacek at codeweavers.com>
Date: Fri Aug 28 14:27:05 2020 +0200
conhost: Implement IOCTL_CONDRV_READ_OUTPUT.
Signed-off-by: Jacek Caban <jacek at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
---
programs/conhost/conhost.c | 82 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 82 insertions(+)
diff --git a/programs/conhost/conhost.c b/programs/conhost/conhost.c
index 4fbfc19a08..d17a8f4e68 100644
--- a/programs/conhost/conhost.c
+++ b/programs/conhost/conhost.c
@@ -545,6 +545,84 @@ static NTSTATUS write_output( struct screen_buffer *screen_buffer, const struct
return STATUS_SUCCESS;
}
+static NTSTATUS read_output( struct screen_buffer *screen_buffer, const struct condrv_output_params *params,
+ size_t *out_size )
+{
+ enum char_info_mode mode;
+ unsigned int x, y, width;
+ unsigned int i, count;
+
+ x = params->x;
+ y = params->y;
+ mode = params->mode;
+ width = params->width;
+ TRACE( "(%u %u) mode %u width %u\n", x, y, mode, width );
+
+ switch(mode)
+ {
+ case CHAR_INFO_MODE_TEXT:
+ {
+ WCHAR *data;
+ char_info_t *src;
+ if (x >= screen_buffer->width || y >= screen_buffer->height)
+ {
+ *out_size = 0;
+ return STATUS_SUCCESS;
+ }
+ src = screen_buffer->data + y * screen_buffer->width + x;
+ count = min( screen_buffer->data + screen_buffer->height * screen_buffer->width - src,
+ *out_size / sizeof(*data) );
+ *out_size = count * sizeof(*data);
+ if (!(data = alloc_ioctl_buffer( *out_size ))) return STATUS_NO_MEMORY;
+ for (i = 0; i < count; i++) data[i] = src[i].ch;
+ }
+ break;
+ case CHAR_INFO_MODE_ATTR:
+ {
+ unsigned short *data;
+ char_info_t *src;
+ if (x >= screen_buffer->width || y >= screen_buffer->height)
+ {
+ *out_size = 0;
+ return STATUS_SUCCESS;
+ }
+ src = screen_buffer->data + y * screen_buffer->width + x;
+ count = min( screen_buffer->data + screen_buffer->height * screen_buffer->width - src,
+ *out_size / sizeof(*data) );
+ *out_size = count * sizeof(*data);
+ if (!(data = alloc_ioctl_buffer( *out_size ))) return STATUS_NO_MEMORY;
+ for (i = 0; i < count; i++) data[i] = src[i].attr;
+ }
+ break;
+ case CHAR_INFO_MODE_TEXTATTR:
+ {
+ SMALL_RECT *region;
+ char_info_t *data;
+ if (!width || *out_size < sizeof(*region) || x >= screen_buffer->width || y >= screen_buffer->height)
+ return STATUS_INVALID_PARAMETER;
+ count = min( (*out_size - sizeof(*region)) / (width * sizeof(*data)), screen_buffer->height - y );
+ width = min( width, screen_buffer->width - x );
+ *out_size = sizeof(*region) + width * count * sizeof(*data);
+ if (!(region = alloc_ioctl_buffer( *out_size ))) return STATUS_NO_MEMORY;
+ region->Left = x;
+ region->Top = y;
+ region->Right = x + width - 1;
+ region->Bottom = y + count - 1;
+ data = (char_info_t *)(region + 1);
+ for (i = 0; i < count; i++)
+ {
+ memcpy( &data[i * width], &screen_buffer->data[(y + i) * screen_buffer->width + x],
+ width * sizeof(*data) );
+ }
+ }
+ break;
+ default:
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ return STATUS_SUCCESS;
+}
+
static NTSTATUS set_console_title( struct console *console, const WCHAR *in_title, size_t size )
{
WCHAR *title = NULL;
@@ -599,6 +677,10 @@ static NTSTATUS screen_buffer_ioctl( struct screen_buffer *screen_buffer, unsign
return STATUS_INVALID_PARAMETER;
return write_output( screen_buffer, in_data, in_size, out_size );
+ case IOCTL_CONDRV_READ_OUTPUT:
+ if (in_size != sizeof(struct condrv_output_params)) return STATUS_INVALID_PARAMETER;
+ return read_output( screen_buffer, in_data, 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 );
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