+/*
+ * (C) GraÅžvydas "notaz" Ignotas, 2008-2011
+ *
+ * This work is licensed under the terms of any of these licenses
+ * (at your option):
+ * - GNU GPL, version 2 or later.
+ * - GNU LGPL, version 2.1 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
#include <png.h>
#include "readpng.h"
#include "lprintf.h"
-#ifdef PSP
-#define BG_WIDTH 480
-#define BG_HEIGHT 272
-#else
-#define BG_WIDTH 320
-#define BG_HEIGHT 240
-#endif
-
-int readpng(void *dest, const char *fname, readpng_what what)
+int readpng(void *dest, const char *fname, readpng_what what, int req_w, int req_h)
{
FILE *fp;
png_structp png_ptr = NULL;
break;
}
height = info_ptr->height;
- if (height > BG_HEIGHT) height = BG_HEIGHT;
+ if (height > req_h)
+ height = req_h;
width = info_ptr->width;
- if (width > BG_WIDTH) width = BG_WIDTH;
+ if (width > req_w)
+ width = req_w;
for (h = 0; h < height; h++)
{
#endif
src += 3;
}
- dst += BG_WIDTH - width;
+ dst += req_w - width;
}
break;
}
{
int x, y, x1, y1;
unsigned char *dst = dest;
- if (info_ptr->width != 128 || info_ptr->height != 160)
+ if (info_ptr->width != req_w || info_ptr->height != req_h)
{
- lprintf(__FILE__ ": unexpected font image size %ix%i, needed 128x160\n",
- (int)info_ptr->width, (int)info_ptr->height);
+ lprintf(__FILE__ ": unexpected font image size %dx%d, needed %dx%d\n",
+ (int)info_ptr->width, (int)info_ptr->height, req_w, req_h);
break;
}
if (info_ptr->pixel_depth != 8)
{
for (x = 0; x < 16; x++)
{
- for (y1 = 0; y1 < 10; y1++)
+ /* 16x16 grid of syms */
+ int sym_w = req_w / 16;
+ int sym_h = req_h / 16;
+ for (y1 = 0; y1 < sym_h; y1++)
{
- unsigned char *src = row_ptr[y*10 + y1] + x*8;
- for (x1 = 8/2; x1 > 0; x1--, src+=2)
+ unsigned char *src = row_ptr[y*sym_h + y1] + x*sym_w;
+ for (x1 = sym_w/2; x1 > 0; x1--, src+=2)
*dst++ = ((src[0]^0xff) & 0xf0) | ((src[1]^0xff) >> 4);
}
}
{
int x1, y1;
unsigned char *dst = dest;
- if (info_ptr->width != 8 || info_ptr->height != 10)
+ if (info_ptr->width != req_w || info_ptr->height != req_h)
{
- lprintf(__FILE__ ": unexpected selector image size %ix%i, needed 8x10\n",
- (int)info_ptr->width, (int)info_ptr->height);
+ lprintf(__FILE__ ": unexpected selector image size %ix%i, needed %dx%d\n",
+ (int)info_ptr->width, (int)info_ptr->height, req_w, req_h);
break;
}
if (info_ptr->pixel_depth != 8)
lprintf(__FILE__ ": selector image uses %ibpp, needed 8bpp\n", info_ptr->pixel_depth);
break;
}
- for (y1 = 0; y1 < 10; y1++)
+ for (y1 = 0; y1 < req_h; y1++)
{
unsigned char *src = row_ptr[y1];
- for (x1 = 8/2; x1 > 0; x1--, src+=2)
+ for (x1 = req_w/2; x1 > 0; x1--, src+=2)
*dst++ = ((src[0]^0xff) & 0xf0) | ((src[1]^0xff) >> 4);
}
break;
}
- case READPNG_320_24:
- case READPNG_480_24:
+ case READPNG_24:
{
int height, width, h;
- int needw = (what == READPNG_480_24) ? 480 : 320;
unsigned char *dst = dest;
if (info_ptr->pixel_depth != 24)
{
break;
}
height = info_ptr->height;
- if (height > 240) height = 240;
+ if (height > req_h)
+ height = req_h;
width = info_ptr->width;
- if (width > needw) width = needw;
+ if (width > req_w)
+ width = req_w;
for (h = 0; h < height; h++)
{
int len = width;
unsigned char *src = row_ptr[h];
- dst += (needw - width) * 3;
+ dst += (req_w - width) * 3;
for (len = width; len > 0; len--, dst+=3, src+=3)
dst[0] = src[2], dst[1] = src[1], dst[2] = src[0];
}
return ret;
}
+int writepng(const char *fname, unsigned short *src, int w, int h)
+{
+ png_structp png_ptr = NULL;
+ png_infop info_ptr = NULL;
+ png_bytepp row_pointers;
+ int i, j, ret = -1;
+ FILE *f;
+
+ f = fopen(fname, "wb");
+ if (f == NULL) {
+ lprintf(__FILE__ ": failed to open \"%s\"\n", fname);
+ return -1;
+ }
+
+ row_pointers = calloc(h, sizeof(row_pointers[0]));
+ if (row_pointers == NULL)
+ goto end1;
+
+ for (i = 0; i < h; i++) {
+ unsigned char *dst = malloc(w * 3);
+ if (dst == NULL)
+ goto end2;
+ row_pointers[i] = dst;
+ for (j = 0; j < w; j++, src++, dst += 3) {
+ dst[0] = (*src & 0xf800) >> 8;
+ dst[1] = (*src & 0x07e0) >> 3;
+ dst[2] = (*src & 0x001f) << 3;
+ }
+ }
+
+ /* initialize stuff */
+ png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+ if (png_ptr == NULL) {
+ fprintf(stderr, "png_create_write_struct() failed");
+ goto end2;
+ }
+
+ info_ptr = png_create_info_struct(png_ptr);
+ if (info_ptr == NULL) {
+ fprintf(stderr, "png_create_info_struct() failed");
+ goto end3;
+ }
+
+ if (setjmp(png_jmpbuf(png_ptr)) != 0) {
+ fprintf(stderr, "error in png code\n");
+ goto end4;
+ }
+
+ png_init_io(png_ptr, f);
+
+ png_set_IHDR(png_ptr, info_ptr, w, h,
+ 8, PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE,
+ PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
+
+ png_write_info(png_ptr, info_ptr);
+ png_write_image(png_ptr, row_pointers);
+ png_write_end(png_ptr, NULL);
+
+ ret = 0;
+
+end4:
+// png_destroy_info_struct(png_ptr, &info_ptr); // freed below
+end3:
+ png_destroy_write_struct(&png_ptr, &info_ptr);
+end2:
+ for (i = 0; i < h; i++)
+ free(row_pointers[i]);
+ free(row_pointers);
+end1:
+ fclose(f);
+ return ret;
+}
notaz.gp2x.de / libpicofe.git / blobdiff