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authorVincent Sanders <vince@kyllikki.org>2020-06-22 10:49:34 +0100
committerVincent Sanders <vince@kyllikki.org>2020-06-27 23:30:54 +0100
commit421d796e9b462939de9e9e116e09e9384a8ba5bc (patch)
tree4b74bebbfa11814c6b58b03e6c45e93cd621b838 /utils/convert_image.c
parent1dab82d655b8f54e344f21f062495d5cb35c8c4c (diff)
downloadnetsurf-421d796e9b462939de9e9e116e09e9384a8ba5bc.tar.gz
netsurf-421d796e9b462939de9e9e116e09e9384a8ba5bc.tar.bz2
split tools and utils
Diffstat (limited to 'utils/convert_image.c')
-rw-r--r--utils/convert_image.c304
1 files changed, 0 insertions, 304 deletions
diff --git a/utils/convert_image.c b/utils/convert_image.c
deleted file mode 100644
index de772fc29..000000000
--- a/utils/convert_image.c
+++ /dev/null
@@ -1,304 +0,0 @@
-/*
- * Copyright 2009 Daniel Silverstone <dsilvers@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * NetSurf 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; version 2 of the License.
- *
- * NetSurf 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, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdbool.h>
-#include <errno.h>
-#include <stdio.h>
-#include <png.h>
-#include <stdlib.h>
-#include <string.h>
-
-#if PNG_LIBPNG_VER < 10209
-#define png_set_expand_gray_1_2_4_to_8(png) png_set_gray_1_2_4_to_8(png)
-#endif
-
-static png_structp png;
-static png_infop info;
-static int interlace;
-static size_t rowbytes;
-static int raw_width, raw_height;
-static int rowstride;
-static unsigned char *bitmap_data;
-static bool is_cursor = true;
-static int raw_hot_x, raw_hot_y;
-
-#define WIDTH (is_cursor?raw_width-1:raw_width)
-#define HEIGHT (is_cursor?raw_height-1:raw_height)
-
-#define HOT_X (is_cursor?raw_hot_x-1:0)
-#define HOT_Y (is_cursor?raw_hot_y-1:0)
-
-#define REAL(v) (is_cursor?v+1:v)
-
-#define PPIX_AT(x,y) ((bitmap_data + (rowstride * y)) + (x * 4))
-
-#define R_OFF 2
-#define G_OFF 1
-#define B_OFF 0
-#define A_OFF 3
-
-#define R_AT(x,y) *(PPIX_AT(x,y) + R_OFF)
-#define G_AT(x,y) *(PPIX_AT(x,y) + G_OFF)
-#define B_AT(x,y) *(PPIX_AT(x,y) + B_OFF)
-#define A_AT(x,y) *(PPIX_AT(x,y) + A_OFF)
-
-
-static void
-usage(void)
-{
- fprintf(stderr, "usage: fb_convert_image input.png output.inc varname\n");
-}
-
-
-static void
-detect_hotspot(void)
-{
- int i;
- int greenpixels = 0;
-
- for (i = 0; i < raw_width; ++i) {
- if (A_AT(i, 0) == 255) {
- if (G_AT(i, 0) == 255) {
- greenpixels++;
- raw_hot_x = i;
- }
- if ((B_AT(i, 0) != 0) || (R_AT(i, 0) != 0)) {
- is_cursor = false;
- return;
- }
- } else if (A_AT(i, 0) != 0) {
- is_cursor = false;
- return;
- }
- }
- if (greenpixels != 1) {
- is_cursor = false;
- return;
- }
-
- for (i = 0; i < raw_height; ++i) {
- if (A_AT(0, i) == 255) {
- if (G_AT(0, i) == 255) {
- greenpixels++;
- raw_hot_y = i;
- }
- if ((B_AT(0, i) != 0) || (R_AT(0, i) != 0)) {
- is_cursor = false;
- return;
- }
- } else if (A_AT(0, i) != 0) {
- is_cursor = false;
- return;
- }
- }
- if (greenpixels != 2) {
- is_cursor = false;
- return;
- }
- printf(" Pointer detected. Adjusted hotspot at %d, %d (0-based)\n",
- raw_hot_x - 1, raw_hot_y - 1);
-}
-
-
-static void
-info_callback(png_structp png, png_infop info)
-{
- int bit_depth, color_type, interlace, intent;
- double gamma;
- png_uint_32 width, height;
-
- /* Read the PNG details */
- png_get_IHDR(png, info, &width, &height, &bit_depth,
- &color_type, &interlace, 0, 0);
-
- /* Set up our transformations */
- if (color_type == PNG_COLOR_TYPE_PALETTE)
- png_set_palette_to_rgb(png);
- if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8)
- png_set_expand_gray_1_2_4_to_8(png);
- if (png_get_valid(png, info, PNG_INFO_tRNS))
- png_set_tRNS_to_alpha(png);
- if (bit_depth == 16)
- png_set_strip_16(png);
- if (color_type == PNG_COLOR_TYPE_GRAY ||
- color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
- png_set_gray_to_rgb(png);
- if (!(color_type & PNG_COLOR_MASK_ALPHA))
- png_set_filler(png, 0xff, PNG_FILLER_AFTER);
- /* gamma correction - we use 2.2 as our screen gamma
- * this appears to be correct (at least in respect to !Browse)
- * see http://www.w3.org/Graphics/PNG/all_seven.html for a test case
- */
- if (png_get_sRGB(png, info, &intent))
- png_set_gamma(png, 2.2, 0.45455);
- else {
- if (png_get_gAMA(png, info, &gamma))
- png_set_gamma(png, 2.2, gamma);
- else
- png_set_gamma(png, 2.2, 0.45455);
- }
-
-
- png_read_update_info(png, info);
-
- rowbytes = png_get_rowbytes(png, info);
- interlace = (interlace == PNG_INTERLACE_ADAM7);
- raw_width = width;
- raw_height = height;
-
- rowstride = raw_width * 4;
- bitmap_data = malloc(rowstride * raw_height);
-}
-
-static unsigned int interlace_start[8] = {0, 16, 0, 8, 0, 4, 0};
-static unsigned int interlace_step[8] = {28, 28, 12, 12, 4, 4, 0};
-static unsigned int interlace_row_start[8] = {0, 0, 4, 0, 2, 0, 1};
-static unsigned int interlace_row_step[8] = {8, 8, 8, 4, 4, 2, 2};
-
-static void
-row_callback(png_structp png, png_bytep new_row,
- png_uint_32 row_num, int pass)
-{
- unsigned long i, j;
- unsigned int start, step;
- unsigned char *row = bitmap_data + (rowstride * row_num);
-
- if (new_row == 0)
- return;
-
- if (interlace) {
- start = interlace_start[pass];
- step = interlace_step[pass];
- row_num = interlace_row_start[pass] +
- interlace_row_step[pass] * row_num;
-
- /* Copy the data to our current row taking interlacing
- * into consideration */
- row = bitmap_data + (rowstride * row_num);
- for (j = 0, i = start; i < rowbytes; i += step) {
- row[i++] = new_row[j++];
- row[i++] = new_row[j++];
- row[i++] = new_row[j++];
- row[i++] = new_row[j++];
- }
- } else {
- memcpy(row, new_row, rowbytes);
- }
-}
-
-static void
-end_callback(png_structp png, png_infop info)
-{
-}
-
-
-int
-main(int argc, char **argv)
-{
- FILE *f;
- unsigned char buffer[1024];
- int br;
- int x, y, c;
-
- if (argc != 4) {
- usage();
- return 1;
- }
-
- printf(" CONVERT: %s (%s)\n", argv[1], argv[3]);
-
- png = png_create_read_struct(PNG_LIBPNG_VER_STRING, 0, 0, 0);
- info = png_create_info_struct(png);
-
- png_set_progressive_read_fn(png, NULL, info_callback, row_callback, end_callback);
-
- f = fopen(argv[1], "rb");
- if (f == NULL) {
- printf(" Unable to open %s\n", argv[1]);
- return 1;
- }
-
- do {
- br = fread(buffer, 1, 1024, f);
- if (br > 0) {
- png_process_data(png, info, buffer, br);
- }
- } while (br > 0);
-
- if (br < 0) {
- printf("Error reading input: %s\n", strerror(errno));
- fclose(f);
- return 1;
- }
-
- fclose(f);
-
- detect_hotspot();
-
- f = fopen(argv[2], "w");
- if (f == NULL) {
- printf(" Unable to open %s\n", argv[2]);
- return 2;
- }
-
- fprintf(f, "/* This file is auto-generated from %s\n", argv[1]);
- fprintf(f, " *\n * Do not edit this file directly.\n */\n\n");
- fprintf(f, "#include <sys/types.h>\n\n");
- fprintf(f, "#include <stdint.h>\n\n");
- fprintf(f, "#include <stdbool.h>\n\n");
- fprintf(f, "#include <libnsfb.h>\n\n");
- fprintf(f, "#include \"netsurf/plot_style.h\"\n");
- fprintf(f, "#include \"framebuffer/gui.h\"\n");
- fprintf(f, "#include \"framebuffer/fbtk.h\"\n\n");
-
- fprintf(f, "static uint8_t %s_pixdata[] = {\n", argv[3]);
- for (y = 0; y < HEIGHT; ++y) {
- unsigned char *rowptr = bitmap_data + (rowstride * y);
- if (is_cursor) {
- /* If it's a cursor, skip one row and one column */
- rowptr += rowstride + 4;
- }
- fprintf(f, "\t");
- for (x = 0; x < WIDTH; ++x) {
- for (c = 0; c < 4; ++c) {
- unsigned char b = *rowptr++;
- fprintf(f, "0x%02x, ", b);
- }
- }
- fprintf(f, "\n");
- }
- fprintf(f, "};\n\n");
-
- fprintf(f, "struct fbtk_bitmap %s = {\n", argv[3]);
- fprintf(f, "\t.width\t\t= %d,\n", WIDTH);
- fprintf(f, "\t.height\t\t= %d,\n", HEIGHT);
- fprintf(f, "\t.hot_x\t\t= %d,\n", HOT_X);
- fprintf(f, "\t.hot_y\t\t= %d,\n", HOT_Y);
- fprintf(f, "\t.pixdata\t= %s_pixdata,\n", argv[3]);
-
- fprintf(f, "};\n\n");
- fclose(f);
-
- return 0;
-}
-
-/*
- * Local Variables:
- * c-basic-offset:8
- * End:
- */