[media] pwc: Remove software emulation of arbritary resolutions
The pwc driver claims to support any resolution between 160x120
and 640x480, but emulates this by simply drawing a black border
around the image. Userspace can draw its own black border if it
really wants one.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/pwc/pwc-uncompress.c b/drivers/media/video/pwc/pwc-uncompress.c
index e55b568..b65903f 100644
--- a/drivers/media/video/pwc/pwc-uncompress.c
+++ b/drivers/media/video/pwc/pwc-uncompress.c
@@ -35,7 +35,7 @@
int pwc_decompress(struct pwc_device *pdev, struct pwc_frame_buf *fbuf)
{
- int n, line, col, stride;
+ int n, line, col;
void *yuv, *image;
u16 *src;
u16 *dsty, *dstu, *dstv;
@@ -60,35 +60,23 @@
return 0;
}
- vb2_set_plane_payload(&fbuf->vb, 0, pdev->view.size);
+ vb2_set_plane_payload(&fbuf->vb, 0,
+ pdev->width * pdev->height * 3 / 2);
if (pdev->vbandlength == 0) {
/* Uncompressed mode.
- * We copy the data into the output buffer, using the viewport
- * size (which may be larger than the image size).
- * Unfortunately we have to do a bit of byte stuffing to get
- * the desired output format/size.
*
* We do some byte shuffling here to go from the
* native format to YUV420P.
*/
src = (u16 *)yuv;
- n = pdev->view.x * pdev->view.y;
+ n = pdev->width * pdev->height;
+ dsty = (u16 *)(image);
+ dstu = (u16 *)(image + n);
+ dstv = (u16 *)(image + n + n / 4);
- /* offset in Y plane */
- stride = pdev->view.x * pdev->offset.y + pdev->offset.x;
- dsty = (u16 *)(image + stride);
-
- /* offsets in U/V planes */
- stride = pdev->view.x * pdev->offset.y / 4 + pdev->offset.x / 2;
- dstu = (u16 *)(image + n + stride);
- dstv = (u16 *)(image + n + n / 4 + stride);
-
- /* increment after each line */
- stride = (pdev->view.x - pdev->image.x) / 2; /* u16 is 2 bytes */
-
- for (line = 0; line < pdev->image.y; line++) {
- for (col = 0; col < pdev->image.x; col += 4) {
+ for (line = 0; line < pdev->height; line++) {
+ for (col = 0; col < pdev->width; col += 4) {
*dsty++ = *src++;
*dsty++ = *src++;
if (line & 1)
@@ -96,11 +84,6 @@
else
*dstu++ = *src++;
}
- dsty += stride;
- if (line & 1)
- dstv += (stride >> 1);
- else
- dstu += (stride >> 1);
}
return 0;
@@ -122,6 +105,3 @@
}
return 0;
}
-
-
-/* vim: set cino= formatoptions=croql cindent shiftwidth=8 tabstop=8: */