diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2012-01-04 16:58:44 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-01-06 10:46:46 -0200 |
| commit | 795e6eb3262d3b7247ce450835eea6df6571d103 (patch) | |
| tree | 558c161d69a04a172f54c1edd38c44b2553bf10e /drivers/media/video/pwc/pwc-uncompress.c | |
| parent | a08d2c727153dc6cea1d5d54a43fd7d69c1467c3 (diff) | |
[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>
Diffstat (limited to 'drivers/media/video/pwc/pwc-uncompress.c')
| -rw-r--r-- | drivers/media/video/pwc/pwc-uncompress.c | 38 |
1 files changed, 9 insertions, 29 deletions
diff --git a/drivers/media/video/pwc/pwc-uncompress.c b/drivers/media/video/pwc/pwc-uncompress.c index e55b568cbf3..b65903fbcf0 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 @@ int pwc_decompress(struct pwc_device *pdev, struct pwc_frame_buf *fbuf) 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 @@ int pwc_decompress(struct pwc_device *pdev, struct pwc_frame_buf *fbuf) else *dstu++ = *src++; } - dsty += stride; - if (line & 1) - dstv += (stride >> 1); - else - dstu += (stride >> 1); } return 0; @@ -122,6 +105,3 @@ int pwc_decompress(struct pwc_device *pdev, struct pwc_frame_buf *fbuf) } return 0; } - - -/* vim: set cino= formatoptions=croql cindent shiftwidth=8 tabstop=8: */ |