diff options
author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-14 17:31:16 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-08-15 16:43:09 -0300 |
commit | 2c3fb08b3f74b8792004095a1f6881a3296ff643 (patch) | |
tree | 19be9d09c4aa66d4363ee9d38a43721f5d6b144f /drivers/media/video/omap/omap_voutlib.c | |
parent | 2a2d1cf46500ab7599d0b45ee837f3936763ccac (diff) |
[media] rename drivers/media/video as .../platform
The remaining drivers are mostly platform drivers. Name the
dir to reflect it.
It makes sense to latter break it into a few other dirs.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/omap/omap_voutlib.c')
-rw-r--r-- | drivers/media/video/omap/omap_voutlib.c | 339 |
1 files changed, 0 insertions, 339 deletions
diff --git a/drivers/media/video/omap/omap_voutlib.c b/drivers/media/video/omap/omap_voutlib.c deleted file mode 100644 index 115408b9274..00000000000 --- a/drivers/media/video/omap/omap_voutlib.c +++ /dev/null @@ -1,339 +0,0 @@ -/* - * omap_voutlib.c - * - * Copyright (C) 2005-2010 Texas Instruments. - * - * This file is licensed under the terms of the GNU General Public License - * version 2. This program is licensed "as is" without any warranty of any - * kind, whether express or implied. - * - * Based on the OMAP2 camera driver - * Video-for-Linux (Version 2) camera capture driver for - * the OMAP24xx camera controller. - * - * Author: Andy Lowe (source@mvista.com) - * - * Copyright (C) 2004 MontaVista Software, Inc. - * Copyright (C) 2010 Texas Instruments. - * - */ - -#include <linux/module.h> -#include <linux/errno.h> -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/videodev2.h> - -#include <linux/dma-mapping.h> - -#include <plat/cpu.h> - -#include "omap_voutlib.h" - -MODULE_AUTHOR("Texas Instruments"); -MODULE_DESCRIPTION("OMAP Video library"); -MODULE_LICENSE("GPL"); - -/* Return the default overlay cropping rectangle in crop given the image - * size in pix and the video display size in fbuf. The default - * cropping rectangle is the largest rectangle no larger than the capture size - * that will fit on the display. The default cropping rectangle is centered in - * the image. All dimensions and offsets are rounded down to even numbers. - */ -void omap_vout_default_crop(struct v4l2_pix_format *pix, - struct v4l2_framebuffer *fbuf, struct v4l2_rect *crop) -{ - crop->width = (pix->width < fbuf->fmt.width) ? - pix->width : fbuf->fmt.width; - crop->height = (pix->height < fbuf->fmt.height) ? - pix->height : fbuf->fmt.height; - crop->width &= ~1; - crop->height &= ~1; - crop->left = ((pix->width - crop->width) >> 1) & ~1; - crop->top = ((pix->height - crop->height) >> 1) & ~1; -} -EXPORT_SYMBOL_GPL(omap_vout_default_crop); - -/* Given a new render window in new_win, adjust the window to the - * nearest supported configuration. The adjusted window parameters are - * returned in new_win. - * Returns zero if successful, or -EINVAL if the requested window is - * impossible and cannot reasonably be adjusted. - */ -int omap_vout_try_window(struct v4l2_framebuffer *fbuf, - struct v4l2_window *new_win) -{ - struct v4l2_rect try_win; - - /* make a working copy of the new_win rectangle */ - try_win = new_win->w; - - /* adjust the preview window so it fits on the display by clipping any - * offscreen areas - */ - if (try_win.left < 0) { - try_win.width += try_win.left; - try_win.left = 0; - } - if (try_win.top < 0) { - try_win.height += try_win.top; - try_win.top = 0; - } - try_win.width = (try_win.width < fbuf->fmt.width) ? - try_win.width : fbuf->fmt.width; - try_win.height = (try_win.height < fbuf->fmt.height) ? - try_win.height : fbuf->fmt.height; - if (try_win.left + try_win.width > fbuf->fmt.width) - try_win.width = fbuf->fmt.width - try_win.left; - if (try_win.top + try_win.height > fbuf->fmt.height) - try_win.height = fbuf->fmt.height - try_win.top; - try_win.width &= ~1; - try_win.height &= ~1; - - if (try_win.width <= 0 || try_win.height <= 0) - return -EINVAL; - - /* We now have a valid preview window, so go with it */ - new_win->w = try_win; - new_win->field = V4L2_FIELD_ANY; - return 0; -} -EXPORT_SYMBOL_GPL(omap_vout_try_window); - -/* Given a new render window in new_win, adjust the window to the - * nearest supported configuration. The image cropping window in crop - * will also be adjusted if necessary. Preference is given to keeping the - * the window as close to the requested configuration as possible. If - * successful, new_win, vout->win, and crop are updated. - * Returns zero if successful, or -EINVAL if the requested preview window is - * impossible and cannot reasonably be adjusted. - */ -int omap_vout_new_window(struct v4l2_rect *crop, - struct v4l2_window *win, struct v4l2_framebuffer *fbuf, - struct v4l2_window *new_win) -{ - int err; - - err = omap_vout_try_window(fbuf, new_win); - if (err) - return err; - - /* update our preview window */ - win->w = new_win->w; - win->field = new_win->field; - win->chromakey = new_win->chromakey; - - /* Adjust the cropping window to allow for resizing limitation */ - if (cpu_is_omap24xx()) { - /* For 24xx limit is 8x to 1/2x scaling. */ - if ((crop->height/win->w.height) >= 2) - crop->height = win->w.height * 2; - - if ((crop->width/win->w.width) >= 2) - crop->width = win->w.width * 2; - - if (crop->width > 768) { - /* The OMAP2420 vertical resizing line buffer is 768 - * pixels wide. If the cropped image is wider than - * 768 pixels then it cannot be vertically resized. - */ - if (crop->height != win->w.height) - crop->width = 768; - } - } else if (cpu_is_omap34xx()) { - /* For 34xx limit is 8x to 1/4x scaling. */ - if ((crop->height/win->w.height) >= 4) - crop->height = win->w.height * 4; - - if ((crop->width/win->w.width) >= 4) - crop->width = win->w.width * 4; - } - return 0; -} -EXPORT_SYMBOL_GPL(omap_vout_new_window); - -/* Given a new cropping rectangle in new_crop, adjust the cropping rectangle to - * the nearest supported configuration. The image render window in win will - * also be adjusted if necessary. The preview window is adjusted such that the - * horizontal and vertical rescaling ratios stay constant. If the render - * window would fall outside the display boundaries, the cropping rectangle - * will also be adjusted to maintain the rescaling ratios. If successful, crop - * and win are updated. - * Returns zero if successful, or -EINVAL if the requested cropping rectangle is - * impossible and cannot reasonably be adjusted. - */ -int omap_vout_new_crop(struct v4l2_pix_format *pix, - struct v4l2_rect *crop, struct v4l2_window *win, - struct v4l2_framebuffer *fbuf, const struct v4l2_rect *new_crop) -{ - struct v4l2_rect try_crop; - unsigned long vresize, hresize; - - /* make a working copy of the new_crop rectangle */ - try_crop = *new_crop; - - /* adjust the cropping rectangle so it fits in the image */ - if (try_crop.left < 0) { - try_crop.width += try_crop.left; - try_crop.left = 0; - } - if (try_crop.top < 0) { - try_crop.height += try_crop.top; - try_crop.top = 0; - } - try_crop.width = (try_crop.width < pix->width) ? - try_crop.width : pix->width; - try_crop.height = (try_crop.height < pix->height) ? - try_crop.height : pix->height; - if (try_crop.left + try_crop.width > pix->width) - try_crop.width = pix->width - try_crop.left; - if (try_crop.top + try_crop.height > pix->height) - try_crop.height = pix->height - try_crop.top; - - try_crop.width &= ~1; - try_crop.height &= ~1; - - if (try_crop.width <= 0 || try_crop.height <= 0) - return -EINVAL; - - if (cpu_is_omap24xx()) { - if (try_crop.height != win->w.height) { - /* If we're resizing vertically, we can't support a - * crop width wider than 768 pixels. - */ - if (try_crop.width > 768) - try_crop.width = 768; - } - } - /* vertical resizing */ - vresize = (1024 * try_crop.height) / win->w.height; - if (cpu_is_omap24xx() && (vresize > 2048)) - vresize = 2048; - else if (cpu_is_omap34xx() && (vresize > 4096)) - vresize = 4096; - - win->w.height = ((1024 * try_crop.height) / vresize) & ~1; - if (win->w.height == 0) - win->w.height = 2; - if (win->w.height + win->w.top > fbuf->fmt.height) { - /* We made the preview window extend below the bottom of the - * display, so clip it to the display boundary and resize the - * cropping height to maintain the vertical resizing ratio. - */ - win->w.height = (fbuf->fmt.height - win->w.top) & ~1; - if (try_crop.height == 0) - try_crop.height = 2; - } - /* horizontal resizing */ - hresize = (1024 * try_crop.width) / win->w.width; - if (cpu_is_omap24xx() && (hresize > 2048)) - hresize = 2048; - else if (cpu_is_omap34xx() && (hresize > 4096)) - hresize = 4096; - - win->w.width = ((1024 * try_crop.width) / hresize) & ~1; - if (win->w.width == 0) - win->w.width = 2; - if (win->w.width + win->w.left > fbuf->fmt.width) { - /* We made the preview window extend past the right side of the - * display, so clip it to the display boundary and resize the - * cropping width to maintain the horizontal resizing ratio. - */ - win->w.width = (fbuf->fmt.width - win->w.left) & ~1; - if (try_crop.width == 0) - try_crop.width = 2; - } - if (cpu_is_omap24xx()) { - if ((try_crop.height/win->w.height) >= 2) - try_crop.height = win->w.height * 2; - - if ((try_crop.width/win->w.width) >= 2) - try_crop.width = win->w.width * 2; - - if (try_crop.width > 768) { - /* The OMAP2420 vertical resizing line buffer is - * 768 pixels wide. If the cropped image is wider - * than 768 pixels then it cannot be vertically resized. - */ - if (try_crop.height != win->w.height) - try_crop.width = 768; - } - } else if (cpu_is_omap34xx()) { - if ((try_crop.height/win->w.height) >= 4) - try_crop.height = win->w.height * 4; - - if ((try_crop.width/win->w.width) >= 4) - try_crop.width = win->w.width * 4; - } - /* update our cropping rectangle and we're done */ - *crop = try_crop; - return 0; -} -EXPORT_SYMBOL_GPL(omap_vout_new_crop); - -/* Given a new format in pix and fbuf, crop and win - * structures are initialized to default values. crop - * is initialized to the largest window size that will fit on the display. The - * crop window is centered in the image. win is initialized to - * the same size as crop and is centered on the display. - * All sizes and offsets are constrained to be even numbers. - */ -void omap_vout_new_format(struct v4l2_pix_format *pix, - struct v4l2_framebuffer *fbuf, struct v4l2_rect *crop, - struct v4l2_window *win) -{ - /* crop defines the preview source window in the image capture - * buffer - */ - omap_vout_default_crop(pix, fbuf, crop); - - /* win defines the preview target window on the display */ - win->w.width = crop->width; - win->w.height = crop->height; - win->w.left = ((fbuf->fmt.width - win->w.width) >> 1) & ~1; - win->w.top = ((fbuf->fmt.height - win->w.height) >> 1) & ~1; -} -EXPORT_SYMBOL_GPL(omap_vout_new_format); - -/* - * Allocate buffers - */ -unsigned long omap_vout_alloc_buffer(u32 buf_size, u32 *phys_addr) -{ - u32 order, size; - unsigned long virt_addr, addr; - - size = PAGE_ALIGN(buf_size); - order = get_order(size); - virt_addr = __get_free_pages(GFP_KERNEL, order); - addr = virt_addr; - - if (virt_addr) { - while (size > 0) { - SetPageReserved(virt_to_page(addr)); - addr += PAGE_SIZE; - size -= PAGE_SIZE; - } - } - *phys_addr = (u32) virt_to_phys((void *) virt_addr); - return virt_addr; -} - -/* - * Free buffers - */ -void omap_vout_free_buffer(unsigned long virtaddr, u32 buf_size) -{ - u32 order, size; - unsigned long addr = virtaddr; - - size = PAGE_ALIGN(buf_size); - order = get_order(size); - - while (size > 0) { - ClearPageReserved(virt_to_page(addr)); - addr += PAGE_SIZE; - size -= PAGE_SIZE; - } - free_pages((unsigned long) virtaddr, order); -} |