linux-dvb-apps.git - linux-dvb-apps Debian packaging

diff options

Diffstat (limited to '')

-rw-r--r--

1 files changed, 25 insertions, 0 deletions

/* $Id$ * $URL$ * * new style Image (PPM/PNG) Driver for LCD4Linux * * Copyright (C) 2003 Michael Reinelt <michael@reinelt.co.at> * Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net> * * This file is part of LCD4Linux. * * LCD4Linux 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, or (at your option) * any later version. * * LCD4Linux 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., 675 Mass Ave, Cambridge, MA 02139, USA. * */ /* * * exported fuctions: * * struct DRIVER drv_Image * */ #include "config.h" #include <stdlib.h> #include <stdio.h> #include <string.h> #include <errno.h> #include <unistd.h> #include <termios.h> #include <fcntl.h> #include <sys/time.h> #ifdef WITH_PNG #ifdef HAVE_GD_GD_H #include <gd/gd.h> #else #ifdef HAVE_GD_H #include <gd.h> #else #error "gd.h not found!" #error "cannot compile PNG driver" #endif #endif #if GD2_VERS != 2 #error "lcd4linux requires libgd version 2" #error "cannot compile PNG driver" #endif #endif #include "debug.h" #include "cfg.h" #include "timer.h" #include "qprintf.h" #include "plugin.h" #include "drv.h" #include "drv_generic_graphic.h" #ifdef WITH_DMALLOC #include <dmalloc.h> #endif static char Name[] = "Image"; static enum { NIL, PPM, PNG } Format; static int pixel = -1; /* pointsize in pixel */ static int pgap = 0; /* gap between points */ static int rgap = 0; /* row gap between lines */ static int cgap = 0; /* column gap between characters */ static int border = 0; /* window border */ static int dimx, dimy; /* total window dimension in pixel */ static RGBA BC; static RGBA *drv_IMG_FB = NULL; static int dirty = 1; /****************************************/ /*** hardware dependant functions ***/ /****************************************/ #ifdef WITH_PPM static int drv_IMG_flush_PPM(void) { static int seq = 0; static RGBA *bitbuf = NULL; static unsigned char *rowbuf = NULL; int xsize, ysize, row, col, i; char path[256], tmp[256], buffer[256]; int fd; xsize = 2 * border + (DCOLS / XRES - 1) * cgap + DCOLS * pixel + (DCOLS - 1) * pgap; ysize = 2 * border + (DROWS / YRES - 1) * rgap + DROWS * pixel + (DROWS - 1) * pgap; if (bitbuf == NULL) { if ((bitbuf = malloc(xsize * ysize * sizeof(*bitbuf))) == NULL) { error("%s: malloc() failed: %s", Name, strerror(errno)); return -1; } } if (rowbuf == NULL) { if ((rowbuf = malloc(3 * xsize * sizeof(*rowbuf))) == NULL) { error("Raster: malloc() failed: %s", strerror(errno)); return -1; } } for (i = 0; i < xsize * ysize; i++) { bitbuf[i] = BC; } for (row = 0; row < DROWS; row++) { int y = border + (row / YRES) * rgap + row * (pixel + pgap); for (col = 0; col < DCOLS; col++) { int x = border + (col / XRES) * cgap + col * (pixel + pgap); int a, b; for (a = 0; a < pixel; a++) for (b = 0; b < pixel; b++) bitbuf[y * xsize + x + a * xsize + b] = drv_IMG_FB[row * DCOLS + col]; } } snprintf(path, sizeof(path), output, seq++); qprintf(tmp, sizeof(tmp), "%s.tmp", path); /* remove the file */ unlink(tmp); /* avoid symlink security hole: */ /* open it with O_EXCL will fail if the file exists. */ /* This should not happen because we just unlinked it. */ if ((fd = open(tmp, O_WRONLY | O_CREAT | O_EXCL, 0644)) < 0) { error("%s: open(%s) failed: %s", Name, tmp, strerror(errno)); return -1; } qprintf(buffer, sizeof(buffer), "P6\n%d %d\n255\n", xsize, ysize); if (write(fd, buffer, strlen(buffer)) < 0) { error("%s: write(%s) failed: %s", Name, tmp, strerror(errno)); return -1; } for (row = 0; row < ysize; row++) { int c = 0; for (col = 0; col < xsize; col++) { RGBA p = bitbuf[row * xsize + col]; rowbuf[c++] = p.R; rowbuf[c++] = p.G; rowbuf[c++] = p.B; } if (write(fd, rowbuf, c) < 0) { error("%s: write(%s) failed: %s", Name, tmp, strerror(errno)); break; } } if (close(fd) < 0) { error("%s: close(%s) failed: %s", Name, tmp, strerror(errno)); return -1; } if (rename(tmp, path) < 0) { error("%s: rename(%s) failed: %s", Name, tmp, strerror(errno)); return -1; } return 0; } #endif #ifdef WITH_PNG static int drv_IMG_flush_PNG(void) { static int seq = 0; int xsize, ysize, row, col; char path[256], tmp[256]; FILE *fp; int fd; gdImagePtr im; xsize = 2 * border + (DCOLS / XRES - 1) * cgap + DCOLS * pixel + (DCOLS - 1) * pgap; ysize = 2 * border + (DROWS / YRES - 1) * rgap + DROWS * pixel + (DROWS - 1) * pgap; im = gdImageCreateTrueColor(xsize, ysize); gdImageFilledRectangle(im, 0, 0, xsize, ysize, gdTrueColor(BC.R, BC.G, BC.B)); for (row = 0; row < DROWS; row++) { int y = border + (row / YRES) * rgap + row * (pixel + pgap); for (col = 0; col < DCOLS; col++) { int x = border + (col / XRES) * cgap + col * (pixel + pgap); RGBA p = drv_IMG_FB[row * DCOLS + col]; int c = gdTrueColor(p.R, p.G, p.B); gdImageFilledRectangle(im, x, y, x + pixel - 1, y + pixel - 1, c); } } snprintf(path, sizeof(path), output, seq++); qprintf(tmp, sizeof(tmp), "%s.tmp", path); /* remove the file */ unlink(tmp); /* avoid symlink security hole: */ /* open it with O_EXCL will fail if the file exists. */ /* This should not happen because we just unlinked it. */ if ((fd = open(tmp, O_WRONLY | O_CREAT | O_EXCL, 0644)) < 0) { error("%s: open(%s) failed: %s", Name, tmp, strerror(errno)); return -1; } if ((fp = fdopen(fd, "w")) == NULL) { error("%s: fdopen(%s) failed: %s\n", Name, tmp, strerror(errno)); close(fd); return -1; } gdImagePng(im, fp); gdImageDestroy(im); if (fclose(fp) != 0) { error("%s: fclose(%s) failed: %s\n", Name, tmp, strerror(errno)); return -1; } if (rename(tmp, path) < 0) { error("%s: rename(%s) failed: %s\n", Name, tmp, strerror(errno)); return -1; } return 0; } #endif static void drv_IMG_flush(void) { switch (Format) { case PPM: #ifdef WITH_PPM drv_IMG_flush_PPM(); #endif break; case PNG: #ifdef WITH_PNG drv_IMG_flush_PNG(); #endif break; default: break; } } static void drv_IMG_timer( __attribute__ ((unused)) void *notused) { if (dirty) { drv_IMG_flush(); dirty = 0; } } static void drv_IMG_blit(const int row, const int col, const int height, const int width) { int r, c; for (r = row; r < row + height; r++) { for (c = col; c < col + width; c++) { RGBA p1 = drv_IMG_FB[r * DCOLS + c]; RGBA p2 = drv_generic_graphic_rgb(r, c); if (p1.R != p2.R || p1.G != p2.G || p1.B != p2.B) { drv_IMG_FB[r * DCOLS + c] = p2; dirty = 1; } } } } static int drv_IMG_start(const char *section) { int i; char *s; if (output == NULL || *output == '\0') { error("%s: no output file specified (use -o switch)", Name); return -1; } /* read file format from config */ s = cfg_get(section, "Format", NULL); if (s == NULL || *s == '\0') { error("%s: no '%s.Format' entry from %s", Name, section, cfg_source()); free(s); return -1; } Format = NIL; #ifdef WITH_PPM if (strcmp(s, "PPM") == 0) { Format = PPM; } #endif #ifdef WITH_PNG if (strcmp(s, "PNG") == 0) { Format = PNG; } #endif if (Format == NIL) { error("%s: bad %s.Format '%s' from %s", Name, section, s, cfg_source()); free(s); return -1; } free(s); /* read display size from config */ if (sscanf(s = cfg_get(section, "Size", "120x32"), "%dx%d", &DCOLS, &DROWS) != 2 || DCOLS < 1 || DROWS < 1) { error("%s: bad %s.Size '%s' from %s", Name, section, s, cfg_source()); free(s); return -1; } free(s); if (sscanf(s = cfg_get(section, "font", "5x8"), "%dx%d", &XRES, &YRES) != 2 || XRES < 1 || YRES < 1) { error("%s: bad %s.Font '%s' from %s", Name, section, s, cfg_source()); free(s); return -1; } free(s); if (sscanf(s = cfg_get(section, "pixel", "4+1"), "%d+%d", &pixel, &pgap) != 2 || pixel < 1 || pgap < 0) { error("%s: bad %s.Pixel '%s' from %s", Name, section, s, cfg_source()); free(s); return -1; } free(s); if (sscanf(s = cfg_get(section, "gap", "-1x-1"), "%dx%d", &cgap, &rgap) != 2 || cgap < -1 || rgap < -1) { error("%s: bad %s.Gap '%s' from %s", Name, section, s, cfg_source()); free(s); return -1; } free(s); if (rgap < 0) rgap = pixel + pgap; if (cgap < 0) cgap = pixel + pgap; if (cfg_number(section, "border", 0, 0, -1, &border) < 0) return -1; s = cfg_get(section, "basecolor", "000000ff"); if (color2RGBA(s, &BC) < 0) { error("%s: ignoring illegal color '%s'", Name, s); } free(s); drv_IMG_FB = malloc(DCOLS * DROWS * sizeof(*drv_IMG_FB)); if (drv_IMG_FB == NULL) { error("%s: framebuffer could not be allocated: malloc() failed", Name); return -1; } for (i = 0; i < DCOLS * DROWS; i++) { drv_IMG_FB[i] = BC; } dimx = DCOLS * pixel + (DCOLS - 1) * pgap + (DCOLS / XRES - 1) * cgap; dimy = DROWS * pixel + (DROWS - 1) * pgap + (DROWS / YRES - 1) * rgap; /* initially flush the image to a file */ drv_IMG_flush(); /* regularly flush the image to a file */ /* Fixme: make 100msec configurable */ timer_add(drv_IMG_timer, NULL, 100, 0); return 0; } /****************************************/ /*** plugins ***/ /****************************************/ /* none at the moment... */ /****************************************/ /*** exported functions ***/ /****************************************/ /* list models */ int drv_IMG_list(void) { #ifdef WITH_PPM printf("PPM "); #endif #ifdef WITH_PNG printf("PNG "); #endif return 0; } /* initialize driver & display */ int drv_IMG_init(const char *section, const __attribute__ ((unused)) int quiet) { int ret; info("%s: %s", Name, "$Rev$"); /* real worker functions */ drv_generic_graphic_real_blit = drv_IMG_blit; /* start display */ if ((ret = drv_IMG_start(section)) != 0) return ret; /* initialize generic graphic driver */ if ((ret = drv_generic_graphic_init(section, Name)) != 0) return ret; /* register plugins */ /* none at the moment... */ return 0; } /* close driver & display */ int drv_IMG_quit(const __attribute__ ((unused)) int quiet) { info("%s: shutting down.", Name); drv_generic_graphic_quit(); if (drv_IMG_FB) { free(drv_IMG_FB); drv_IMG_FB = NULL; } return (0); } DRIVER drv_Image = { .name = Name, .list = drv_IMG_list, .init = drv_IMG_init, .quit = drv_IMG_quit, };


context:
space:
mode: