diff options
Diffstat (limited to 'drivers/media/video/pwc/pwc-uncompress.c')
| -rw-r--r-- | drivers/media/video/pwc/pwc-uncompress.c | 46 |
1 files changed, 10 insertions, 36 deletions
diff --git a/drivers/media/video/pwc/pwc-uncompress.c b/drivers/media/video/pwc/pwc-uncompress.c index 51265092bd3..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; @@ -111,12 +94,6 @@ int pwc_decompress(struct pwc_device *pdev, struct pwc_frame_buf *fbuf) * the decompressor routines will write the data in planar format * immediately. */ - if (pdev->vsize == PSZ_VGA && pdev->vframes == 5 && pdev->vsnapshot) { - PWC_ERROR("Mode Bayer is not supported for now\n"); - /* flags |= PWCX_FLAG_BAYER; */ - return -ENXIO; /* No such device or address: missing decompressor */ - } - if (DEVICE_USE_CODEC1(pdev->type)) { /* TODO & FIXME */ @@ -124,10 +101,7 @@ int pwc_decompress(struct pwc_device *pdev, struct pwc_frame_buf *fbuf) return -ENXIO; /* No such device or address: missing decompressor */ } else { - pwc_dec23_decompress(pdev, yuv, image, PWCX_FLAG_PLANAR); + pwc_dec23_decompress(pdev, yuv, image); } return 0; } - - -/* vim: set cino= formatoptions=croql cindent shiftwidth=8 tabstop=8: */ |