diff options
Diffstat (limited to 'drivers/media/video/pwc/pwc-uncompress.c')
| -rw-r--r-- | drivers/media/video/pwc/pwc-uncompress.c | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/drivers/media/video/pwc/pwc-uncompress.c b/drivers/media/video/pwc/pwc-uncompress.c deleted file mode 100644 index 3b73f295f03..00000000000 --- a/drivers/media/video/pwc/pwc-uncompress.c +++ /dev/null @@ -1,138 +0,0 @@ -/* Linux driver for Philips webcam - Decompression frontend. - (C) 1999-2003 Nemosoft Unv. - (C) 2004-2006 Luc Saillard (luc@saillard.org) - - NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx - driver and thus may have bugs that are not present in the original version. - Please send bug reports and support requests to <luc@saillard.org>. - The decompression routines have been implemented by reverse-engineering the - Nemosoft binary pwcx module. Caveat emptor. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - - vim: set ts=8: -*/ - -#include <asm/current.h> -#include <asm/types.h> - -#include "pwc.h" -#include "pwc-uncompress.h" -#include "pwc-dec1.h" -#include "pwc-dec23.h" - -int pwc_decompress(struct pwc_device *pdev) -{ - struct pwc_frame_buf *fbuf; - int n, line, col, stride; - void *yuv, *image; - u16 *src; - u16 *dsty, *dstu, *dstv; - - if (pdev == NULL) - return -EFAULT; - - fbuf = pdev->read_frame; - if (fbuf == NULL) - return -EFAULT; - image = pdev->image_data; - image += pdev->images[pdev->fill_image].offset; - - yuv = fbuf->data + pdev->frame_header_size; /* Skip header */ - - /* Raw format; that's easy... */ - if (pdev->pixfmt != V4L2_PIX_FMT_YUV420) - { - struct pwc_raw_frame *raw_frame = image; - raw_frame->type = cpu_to_le16(pdev->type); - raw_frame->vbandlength = cpu_to_le16(pdev->vbandlength); - /* cmd_buf is always 4 bytes, but sometimes, only the - * first 3 bytes is filled (Nala case). We can - * determine this using the type of the webcam */ - memcpy(raw_frame->cmd, pdev->cmd_buf, 4); - memcpy(raw_frame+1, yuv, pdev->frame_size); - return 0; - } - - 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; - - /* 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) { - *dsty++ = *src++; - *dsty++ = *src++; - if (line & 1) - *dstv++ = *src++; - else - *dstu++ = *src++; - } - dsty += stride; - if (line & 1) - dstv += (stride >> 1); - else - dstu += (stride >> 1); - } - - return 0; - } - - /* - * Compressed; - * 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 */ - PWC_ERROR("This chipset is not supported for now\n"); - return -ENXIO; /* No such device or address: missing decompressor */ - - } else { - pwc_dec23_decompress(pdev, yuv, image, PWCX_FLAG_PLANAR); - } - return 0; -} - - -/* vim: set cino= formatoptions=croql cindent shiftwidth=8 tabstop=8: */ |