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Diffstat (limited to 'apps/examples/nximage/nximage_bkgd.c')
-rwxr-xr-x | apps/examples/nximage/nximage_bkgd.c | 390 |
1 files changed, 390 insertions, 0 deletions
diff --git a/apps/examples/nximage/nximage_bkgd.c b/apps/examples/nximage/nximage_bkgd.c new file mode 100755 index 000000000..4774fe74e --- /dev/null +++ b/apps/examples/nximage/nximage_bkgd.c @@ -0,0 +1,390 @@ +/**************************************************************************** + * examples/nximage/nximage_bkgd.c + * + * Copyright (C) 2011 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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 <stdint.h> +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <semaphore.h> +#include <errno.h> +#include <debug.h> + +#include <nuttx/nx.h> +#include <nuttx/nxglib.h> +#include <nuttx/nxfonts.h> + +#include "nximage.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/* Select renderer -- Some additional logic would be required to support + * pixel depths that are not directly addressable (1,2,4, and 24). + */ + +#if CONFIG_EXAMPLES_NXIMAGE_BPP == 1 +# define RENDERER nxf_convert_1bpp +#elif CONFIG_EXAMPLES_NXIMAGE_BPP == 2 +# define RENDERER nxf_convert_2bpp +#elif CONFIG_EXAMPLES_NXIMAGE_BPP == 4 +# define RENDERER nxf_convert_4bpp +#elif CONFIG_EXAMPLES_NXIMAGE_BPP == 8 +# define RENDERER nxf_convert_8bpp +#elif CONFIG_EXAMPLES_NXIMAGE_BPP == 16 +# define RENDERER nxf_convert_16bpp +#elif CONFIG_EXAMPLES_NXIMAGE_BPP == 24 +# define RENDERER nxf_convert_24bpp +#elif CONFIG_EXAMPLES_NXIMAGE_BPP == 32 +# define RENDERER nxf_convert_32bpp +#else +# error "Unsupported CONFIG_EXAMPLES_NXIMAGE_BPP" +#endif + +/* Vertical scaling */ + +#if defined(CONFIG_EXAMPLES_NXIMAGE_YSCALEp5) + +/* Read two rows, output one averaged row */ + +#define NINPUT_ROWS 2 +#define NOUTPUT_ROWS 1 + +#elif defined(CONFIG_EXAMPLES_NXIMAGE_YSCALE1p5) +/* Read two rows, output three rows */ + +#define NINPUT_ROWS 2 +#define NOUTPUT_ROWS 3 + +#elif defined(CONFIG_EXAMPLES_NXIMAGE_YSCALE2p0) +/* Read one row, output two rows */ + +#define NINPUT_ROWS 1 +#define NOUTPUT_ROWS 2 + +#else +/* Read one rows, output one or two rows */ + +#define NINPUT_ROWS 1 +#define NOUTPUT_ROWS 1 +#endif + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +struct nximage_run_t +{ + nxgl_mxpixel_t run[SCALED_WIDTH]; +}; + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +static void nximage_redraw(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect, + bool more, FAR void *arg); +static void nximage_position(NXWINDOW hwnd, FAR const struct nxgl_size_s *size, + FAR const struct nxgl_point_s *pos, + FAR const struct nxgl_rect_s *bounds, + FAR void *arg); +#ifdef CONFIG_NX_MOUSE +static void nximage_mousein(NXWINDOW hwnd, FAR const struct nxgl_point_s *pos, + uint8_t buttons, FAR void *arg); +#endif + +#ifdef CONFIG_NX_KBD +static void nximage_kbdin(NXWINDOW hwnd, uint8_t nch, FAR const uint8_t *ch, + FAR void *arg); +#endif + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +static const char g_hello[] = "Hello, World!"; + +/* Read one or two rows, output one tow or three rows */ + +static struct nximage_run_t g_runs[NINPUT_ROWS]; + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/* Background window call table */ + +const struct nx_callback_s g_bgcb = +{ + nximage_redraw, /* redraw */ + nximage_position /* position */ +#ifdef CONFIG_NX_MOUSE + , nximage_mousein /* mousein */ +#endif +#ifdef CONFIG_NX_KBD + , nximage_kbdin /* my kbdin */ +#endif +}; + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: nximage_redraw + * + * Description: + * NX re-draw handler + * + ****************************************************************************/ + +static void nximage_redraw(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect, + bool more, FAR void *arg) +{ + gvdbg("hwnd=%p rect={(%d,%d),(%d,%d)} more=%s\n", + hwnd, rect->pt1.x, rect->pt1.y, rect->pt2.x, rect->pt2.y, + more ? "true" : "false"); +} + +/**************************************************************************** + * Name: nximage_position + * + * Description: + * NX position change handler + * + ****************************************************************************/ + +static void nximage_position(NXWINDOW hwnd, FAR const struct nxgl_size_s *size, + FAR const struct nxgl_point_s *pos, + FAR const struct nxgl_rect_s *bounds, + FAR void *arg) +{ + /* Report the position */ + + gvdbg("hwnd=%p size=(%d,%d) pos=(%d,%d) bounds={(%d,%d),(%d,%d)}\n", + hwnd, size->w, size->h, pos->x, pos->y, + bounds->pt1.x, bounds->pt1.y, bounds->pt2.x, bounds->pt2.y); + + /* Have we picked off the window bounds yet? */ + + if (!g_nximage.havepos) + { + /* Save the background window handle */ + + g_nximage.hbkgd = hwnd; + + /* Save the window limits */ + + g_nximage.xres = bounds->pt2.x + 1; + g_nximage.yres = bounds->pt2.y + 1; + + g_nximage.havepos = true; + sem_post(&g_nximage.sem); + gvdbg("Have xres=%d yres=%d\n", g_nximage.xres, g_nximage.yres); + } +} + +/**************************************************************************** + * Name: nximage_mousein + * + * Description: + * NX mouse input handler + * + ****************************************************************************/ + +#ifdef CONFIG_NX_MOUSE +static void nximage_mousein(NXWINDOW hwnd, FAR const struct nxgl_point_s *pos, + uint8_t buttons, FAR void *arg) +{ + message("nximage_mousein: hwnd=%p pos=(%d,%d) button=%02x\n", + hwnd, pos->x, pos->y, buttons); +} +#endif + +/**************************************************************************** + * Name: nximage_kbdin + * + * Description: + * NX keyboard input handler + * + ****************************************************************************/ + +#ifdef CONFIG_NX_KBD +static void nximage_kbdin(NXWINDOW hwnd, uint8_t nch, FAR const uint8_t *ch, + FAR void *arg) +{ + gvdbg("hwnd=%p nch=%d\n", hwnd, nch); + + /* In this example, there is no keyboard so a keyboard event is not + * expected. + */ + + message("nximage_kbdin: Unexpected keyboard callback\n"); +} +#endif + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: nximage_image + * + * Description: + * Put the NuttX logo in the center of the display. + * + ****************************************************************************/ + +void nximage_image(NXWINDOW hwnd) +{ + FAR const void *state = NULL; + FAR struct nxgl_point_s pos; + FAR struct nxgl_rect_s dest; + FAR const void *src[CONFIG_NX_NPLANES]; + nxgl_coord_t row; + int ret; +#if defined(CONFIG_EXAMPLES_NXIMAGE_YSCALEp5) || defined(CONFIG_EXAMPLES_NXIMAGE_YSCALE1p5) + int i; +#endif + + /* Center the image. Note: these may extend off the display. */ + + pos.x = (g_nximage.xres - SCALED_WIDTH) / 2; + pos.y = (g_nximage.yres - SCALED_HEIGHT) / 2; + + /* Set up the invariant part of the destination bounding box */ + + dest.pt1.x = pos.x; + dest.pt2.x = pos.x + SCALED_WIDTH - 1; + + /* Now output the rows */ + + for (row = 0; row < IMAGE_HEIGHT; row += NINPUT_ROWS) + { + /* Read input row(s) */ + + nximage_blitrow(g_runs[0].run, &state); +#if NINPUT_ROWS > 1 + nximage_blitrow(g_runs[1].run, &state); +#endif + + /* Output rows before averaging */ + +#if defined(CONFIG_EXAMPLES_NXIMAGE_YSCALE1p5) || defined(CONFIG_EXAMPLES_NXIMAGE_YSCALE2p0) + + /* Output row[0] */ + + dest.pt1.y = pos.y; + dest.pt2.y = pos.y; + + src[0] = (FAR const void *)g_runs[0].run; +#if CONFIG_NX_NPLANES > 1 +# warning "More logic is needed for the case where CONFIG_NX_PLANES > 1" +#endif + ret = nx_bitmap((NXWINDOW)hwnd, &dest, src, &pos, SCALED_WIDTH*sizeof(nxgl_mxpixel_t)); + if (ret < 0) + { + message("nximage_image: nx_bitmapwindow failed: %d\n", errno); + } + + /* Increment the vertical position */ + + pos.y++; +#endif + + /* Perform averaging */ + +#if defined(CONFIG_EXAMPLES_NXIMAGE_YSCALEp5) || defined(CONFIG_EXAMPLES_NXIMAGE_YSCALE1p5) + + /* Average row[0] and row[1], output results in row[0] */ + + for (i = 0; i < SCALED_WIDTH; i++) + { + g_runs[0].run[i] = nximage_avgcolor(g_runs[0].run[i], g_runs[1].run[i]); + } + +#endif + + /* Output rows after averaging */ + + /* Output row[0] */ + + dest.pt1.y = pos.y; + dest.pt2.y = pos.y; + + src[0] = (FAR const void *)g_runs[0].run; +#if CONFIG_NX_NPLANES > 1 +# warning "More logic is needed for the case where CONFIG_NX_PLANES > 1" +#endif + ret = nx_bitmap((NXWINDOW)hwnd, &dest, src, &pos, SCALED_WIDTH*sizeof(nxgl_mxpixel_t)); + if (ret < 0) + { + message("nximage_image: nx_bitmapwindow failed: %d\n", errno); + } + + /* Increment the vertical position */ + + pos.y++; + +#if defined(CONFIG_EXAMPLES_NXIMAGE_YSCALE1p5) + + /* Output row[0] and row[1] */ + + dest.pt1.y = pos.y; + dest.pt2.y = pos.y; + + src[0] = (FAR const void *)g_runs[1].run; +#if CONFIG_NX_NPLANES > 1 +# warning "More logic is needed for the case where CONFIG_NX_PLANES > 1" +#endif + ret = nx_bitmap((NXWINDOW)hwnd, &dest, src, &pos, SCALED_WIDTH*sizeof(nxgl_mxpixel_t)); + if (ret < 0) + { + message("nximage_image: nx_bitmapwindow failed: %d\n", errno); + } + + /* Increment the vertical position */ + + pos.y++; +#endif + } +} |