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incubator-nuttx/graphics/nxbe/nxbe_bitmap.c

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/****************************************************************************
* graphics/nxbe/nxbe_bitmap.c
*
* Copyright (C) 2008-2009, 2012, 2016, 2019 Gregory Nutt. All rights
* reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <assert.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/nx/nxglib.h>
#include "nxbe.h"
/****************************************************************************
* Private Types
****************************************************************************/
struct nx_bitmap_s
{
struct nxbe_clipops_s cops;
FAR const void *src; /* The start of the source image. */
struct nxgl_point_s origin; /* Offset into the source image data */
unsigned int stride; /* The width of the full source image in pixels. */
};
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: bitmap_clipcopy
*
* Description:
* Called from nxbe_clipper() to performed the fill operation on visible portions
* of the rectangle.
*
****************************************************************************/
static void bitmap_clipcopy(FAR struct nxbe_clipops_s *cops,
FAR struct nxbe_plane_s *plane,
FAR const struct nxgl_rect_s *rect)
{
struct nx_bitmap_s *bminfo = (struct nx_bitmap_s *)cops;
/* Copy the rectangular region to the graphics device. */
plane->dev.copyrectangle(&plane->pinfo, rect, bminfo->src,
&bminfo->origin, bminfo->stride);
#ifdef CONFIG_NX_UPDATE
/* Notify external logic that the display has been updated */
nx_notify_rectangle(&plane->pinfo, rect);
#endif
}
/****************************************************************************
* Name: nxbe_bitmap_pwfb
*
* Description:
* Copy a rectangular region of a larger image into the per-window
* framebuffer.
*
* Input Parameters:
* wnd - The window that will receive the bitmap image
* dest - Describes the rectangular on the display that will receive the
* the bit map (window coordinate frame).
* src - The start of the source image.
* origin - The origin of the upper, left-most corner of the full bitmap.
* Both dest and origin are in window coordinates, however, origin
* may lie outside of the display.
* stride - The width of the full source image in bytes.
*
* Returned Value:
* OK on success; ERROR on failure with errno set appropriately
*
****************************************************************************/
#ifdef CONFIG_NX_RAMBACKED
static inline void nxbe_bitmap_pwfb(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_rect_s *dest,
FAR const void *src[CONFIG_NX_NPLANES],
FAR const struct nxgl_point_s *origin,
unsigned int stride)
{
struct nxgl_rect_s destrect;
unsigned int deststride;
DEBUGASSERT(wnd != NULL && dest != NULL && src != NULL && origin != NULL);
DEBUGASSERT(wnd->be != NULL && wnd->be->plane != NULL);
/* Verify that the destination rectangle begins "below" and to the "right"
* of the origin
*/
if (dest->pt1.x < origin->x || dest->pt1.y < origin->y)
{
gerr("ERROR: Bad dest start position\n");
return;
}
/* Verify that the width of the destination rectangle does not exceed the
* width of the source bitmap data (taking into account the bitmap origin)
*/
deststride = (((dest->pt2.x - origin->x + 1) *
wnd->be->plane[0].pinfo.bpp + 7) >> 3);
if (deststride > stride)
{
gerr("ERROR: Bad dest width\n");
return;
}
/* Offset the rectangle and image origin by the window origin. This
* converts the rectangle in the device absolute coordinates.
*/
nxgl_rectoffset(&destrect, dest, wnd->bounds.pt1.x, wnd->bounds.pt1.y);
/* Clip to the limits of the window and of the background screen (in
* device coordinates.
*/
nxgl_rectintersect(&destrect, &destrect, &wnd->bounds);
nxgl_rectintersect(&destrect, &destrect, &wnd->be->bkgd.bounds);
if (!nxgl_nullrect(&destrect))
{
/* Restore the destination rectangle to relative window coordinates. */
nxgl_rectoffset(&destrect, &destrect,
-wnd->bounds.pt1.x, -wnd->bounds.pt1.y);
/* Copy the rectangular region to the framebuffer (no clipping).
* REVISIT: Assumes a single color plane.
*/
DEBUGASSERT(wnd->be->plane[0].pwfb.copyrectangle != NULL);
wnd->be->plane[0].pwfb.copyrectangle(wnd, &destrect, src[0],
origin, stride);
}
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nxbe_bitmap_dev
*
* Description:
* Copy a rectangular region of a larger image into the rectangle in the
* specified window. The graphics output is written to the graphics
* device unconditionally.
*
* Input Parameters:
* wnd - The window that will receive the bitmap image
* dest - Describes the rectangular region on the display that will
* receive the the bit map (window coordinate frame).
* src - The start of the source image.
* origin - The origin of the upper, left-most corner of the full bitmap.
* Both dest and origin are in window coordinates, however, origin
* may lie outside of the display.
* stride - The width of the full source image in bytes.
*
* Returned Value:
* OK on success; ERROR on failure with errno set appropriately
*
****************************************************************************/
void nxbe_bitmap_dev(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_rect_s *dest,
FAR const void *src[CONFIG_NX_NPLANES],
FAR const struct nxgl_point_s *origin,
unsigned int stride)
{
struct nx_bitmap_s info;
struct nxgl_rect_s bounds;
struct nxgl_point_s offset;
struct nxgl_rect_s remaining;
unsigned int deststride;
int i;
DEBUGASSERT(wnd != NULL && dest != NULL && src != NULL && origin != NULL);
DEBUGASSERT(wnd->be != NULL && wnd->be->plane != NULL);
/* Don't update hidden windows */
if (NXBE_ISHIDDEN(wnd))
{
return;
}
/* Verify that the destination rectangle begins "below" and to the "right"
* of the origin
*/
if (dest->pt1.x < origin->x || dest->pt1.y < origin->y)
{
gerr("ERROR: Bad dest start position\n");
return;
}
/* Verify that the width of the destination rectangle does not exceed the
* width of the source bitmap data (taking into account the bitmap origin)
*/
deststride = (((dest->pt2.x - origin->x + 1) *
wnd->be->plane[0].pinfo.bpp + 7) >> 3);
if (deststride > stride)
{
gerr("ERROR: Bad dest width\n");
return;
}
/* Offset the rectangle and image origin by the window origin */
nxgl_rectoffset(&bounds, dest, wnd->bounds.pt1.x, wnd->bounds.pt1.y);
nxgl_vectoradd(&offset, origin, &wnd->bounds.pt1);
/* Clip to the limits of the window and of the background screen */
nxgl_rectintersect(&remaining, &bounds, &wnd->bounds);
nxgl_rectintersect(&remaining, &remaining, &wnd->be->bkgd.bounds);
if (nxgl_nullrect(&remaining))
{
return;
}
/* Then perform the clipped fill */
#if CONFIG_NX_NPLANES > 1
for (i = 0; i < wnd->be->vinfo.nplanes; i++)
#else
i = 0;
#endif
{
DEBUGASSERT(wnd->be->plane[i].dev.copyrectangle != NULL);
info.cops.visible = bitmap_clipcopy;
info.cops.obscured = nxbe_clipnull;
info.src = src[i];
info.origin.x = offset.x;
info.origin.y = offset.y;
info.stride = stride;
nxbe_clipper(wnd->above, &remaining, NX_CLIPORDER_DEFAULT,
&info.cops, &wnd->be->plane[i]);
}
}
/****************************************************************************
* Name: nxbe_bitmap
*
* Description:
* Copy a rectangular region of a larger image into the rectangle in the
* specified window. This is a front end to nxbe_bitmap_dev() that is
* used only if CONFIG_NX_RAMBACKED=y. If the per-window frame buffer is
* selected, then the bit map will be written to both the graphics device
* and shadowed in the per-window framebuffer.
*
* Input Parameters:
* wnd - The window that will receive the bitmap image
* dest - Describes the rectangular region on the display that will
* receive the the bit map (window coordinate frame).
* src - The start of the source image.
* origin - The origin of the upper, left-most corner of the full bitmap.
* Both dest and origin are in window coordinates, however, origin
* may lie outside of the display.
* stride - The width of the full source image in bytes.
*
* Returned Value:
* None
*
****************************************************************************/
void nxbe_bitmap(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_rect_s *dest,
FAR const void *src[CONFIG_NX_NPLANES],
FAR const struct nxgl_point_s *origin,
unsigned int stride)
{
#ifdef CONFIG_NX_RAMBACKED
/* If this window supports a pre-window frame buffer then shadow the full,
* unclipped bitmap in that framebuffer.
*/
if (NXBE_ISRAMBACKED(wnd))
{
/* Update the per-window framebuffer */
nxbe_bitmap_pwfb(wnd, dest, src, origin, stride);
}
#endif
/* Don't update hidden windows */
if (!NXBE_ISHIDDEN(wnd))
{
/* Rend the bitmap directly to the graphics device */
nxbe_bitmap_dev(wnd, dest, src, origin, stride);
#ifdef CONFIG_NX_SWCURSOR
/* Update cursor backup memory and redraw the cursor in the modified window
* region.
*/
nxbe_cursor_backupdraw_all(wnd, dest);
#endif
}
}
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