/* 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 succesful, 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;
if (cpu_is_omap24xx() || !machine_has_isp()) {
/* adjust the cropping window to allow for resizing
* limitations. 24xx allow 8x to 1/2x scaling.
*/
if ((crop->height/win->w.height) >= 2) {
/* The maximum vertical downsizing ratio is 2:1 */
crop->height = win->w.height * 2;
}
if ((crop->width/win->w.width) >= 2) {
/* The maximum horizontal downsizing ratio is 2:1 */
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 {
/* adjust the cropping window to allow for resizing
* limitations 34xx allow 8x to 1/8x scaling.
*/
if ((crop->height/win->w.height) >= 8) {
/* The maximum vertical downsizing ratio is 8:1 */
crop->height = win->w.height * 8;
}
if ((crop->width/win->w.width) >= 8) {
/* The maximum horizontal downsizing ratio is 8:1 */
crop->width = win->w.width * 8;
}
}
return 0;
}
/* 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 succesful, 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;
if (cpu_is_omap44xx())
//win->zorder = new_win->zorder;
/* Adjust the cropping window to allow for resizing limitation */
omap_vout_init_max_downscale();
if (max_downscale > 0) {
if ((crop->height/win->w.height) >= max_downscale)
crop->height = win->w.height * max_downscale;
if ((crop->width/win->w.width) >= max_downscale)
crop->width = win->w.width * max_downscale;
}
if (cpu_is_omap24xx()) {
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;
}
}
return 0;
}
