* WPS editor: set eol-style

 * Add CLI-only screenshot utility (using libwps)


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18402 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 778 insertions, 0 deletions

diff --git a/utils/wpseditor/screenshot/gd_bmp.c b/utils/wpseditor/screenshot/gd_bmp.c
new file mode 100644
index 0000000000..8fe737da03
--- /dev/null
+++ b/utils/wpseditor/screenshot/gd_bmp.c
@@ -0,0 +1,778 @@
+/*
+    Stolen from http://cvs.php.net/viewcvs.cgi/gd/playground/gdbmp/
+*/
+
+/*
+	gd_bmp.c
+
+	Bitmap format support for libgd
+
+	* Written 2007, Scott MacVicar
+	---------------------------------------------------------------------------
+
+	Todo:
+
+	Bitfield encoding
+
+	----------------------------------------------------------------------------
+ */
+/* $Id$ */
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <math.h>
+#include <string.h>
+#include <stdlib.h>
+#include "gd.h"
+#include "bmp.h"
+
+extern void* gdCalloc (size_t nmemb, size_t size);
+
+static int bmp_read_header(gdIOCtxPtr infile, bmp_hdr_t *hdr);
+static int bmp_read_info(gdIOCtxPtr infile, bmp_info_t *info);
+static int bmp_read_windows_v3_info(gdIOCtxPtr infile, bmp_info_t *info);
+static int bmp_read_os2_v1_info(gdIOCtxPtr infile, bmp_info_t *info);
+static int bmp_read_os2_v2_info(gdIOCtxPtr infile, bmp_info_t *info);
+
+static int bmp_read_direct(gdImagePtr im, gdIOCtxPtr infile, bmp_info_t *info, bmp_hdr_t *header);
+static int bmp_read_1bit(gdImagePtr im, gdIOCtxPtr infile, bmp_info_t *info, bmp_hdr_t *header);
+static int bmp_read_4bit(gdImagePtr im, gdIOCtxPtr infile, bmp_info_t *info, bmp_hdr_t *header);
+static int bmp_read_8bit(gdImagePtr im, gdIOCtxPtr infile, bmp_info_t *info, bmp_hdr_t *header);
+static int bmp_read_rle(gdImagePtr im, gdIOCtxPtr infile, bmp_info_t *info);
+
+#if GD_MAJOR_VERSION == 2 && GD_MINOR_VERSION < 1
+/* Byte helper functions, since added to GD 2.1 */
+static int gdGetIntLSB(signed int *result, gdIOCtx * ctx);
+static int gdGetWordLSB(signed short int *result, gdIOCtx * ctx);
+#endif
+
+#define BMP_DEBUG(s)
+
+gdImagePtr gdImageCreateFromBmpCtx(gdIOCtxPtr infile);
+
+gdImagePtr gdImageCreateFromBmp(FILE * inFile)
+{
+	gdImagePtr im = 0;
+	gdIOCtx *in = gdNewFileCtx(inFile);
+	im = gdImageCreateFromBmpCtx(in);
+	in->gd_free(in);
+	return im;
+}
+
+gdImagePtr gdImageCreateFromBmpPtr(int size, void *data)
+{
+	gdImagePtr im;
+	gdIOCtx *in = gdNewDynamicCtxEx(size, data, 0);
+	im = gdImageCreateFromBmpCtx(in);
+	in->gd_free(in);
+	return im;
+}
+
+gdImagePtr gdImageCreateFromBmpCtx(gdIOCtxPtr infile)
+{
+	bmp_hdr_t *hdr;
+	bmp_info_t *info;
+	gdImagePtr im = NULL;
+	int error = 0;
+
+	if (!(hdr= (bmp_hdr_t *)gdCalloc(1, sizeof(bmp_hdr_t)))) {
+		return NULL;
+	}
+
+	if (bmp_read_header(infile, hdr)) {
+		gdFree(hdr);
+		return NULL;
+	}
+
+	if (hdr->magic != 0x4d42) {
+		gdFree(hdr);
+		return NULL;
+	}
+
+	if (!(info = (bmp_info_t *)gdCalloc(1, sizeof(bmp_info_t)))) {
+		gdFree(hdr);
+		return NULL;
+	}
+
+	if (bmp_read_info(infile, info)) {
+		gdFree(hdr);
+		gdFree(info);
+		return NULL;
+	}
+
+	BMP_DEBUG(printf("Numcolours: %d\n", info->numcolors));
+	BMP_DEBUG(printf("Width: %d\n", info->width));
+	BMP_DEBUG(printf("Height: %d\n", info->height));
+	BMP_DEBUG(printf("Planes: %d\n", info->numplanes));
+	BMP_DEBUG(printf("Depth: %d\n", info->depth));
+	BMP_DEBUG(printf("Offset: %d\n", hdr->off));
+
+	if (info->depth >= 16) {
+		im = gdImageCreateTrueColor(info->width, info->height);
+	} else {
+		im = gdImageCreate(info->width, info->height);
+	}
+
+	if (!im) {
+		gdFree(hdr);
+		gdFree(info);
+		return NULL;
+	}
+
+	switch (info->depth) {
+		case 1:
+			BMP_DEBUG(printf("1-bit image\n"));
+			error = bmp_read_1bit(im, infile, info, hdr);
+		break;
+		case 4:
+			BMP_DEBUG(printf("4-bit image\n"));
+			error = bmp_read_4bit(im, infile, info, hdr);
+		break;
+		case 8:
+			BMP_DEBUG(printf("8-bit image\n"));
+			error = bmp_read_8bit(im, infile, info, hdr);
+		break;
+		case 16:
+		case 24:
+		case 32:
+			BMP_DEBUG(printf("Direct BMP image\n"));
+			error = bmp_read_direct(im, infile, info, hdr);
+		break;
+		default:
+			BMP_DEBUG(printf("Unknown bit count\n"));
+			error = 1;
+	}
+
+	gdFree(hdr);
+	gdFree(info);
+
+	if (error) {
+		gdImageDestroy(im);
+		return NULL;
+	}
+
+	return im;
+}
+
+static int bmp_read_header(gdIOCtx *infile, bmp_hdr_t *hdr)
+{
+	if(
+	!gdGetWordLSB(&hdr->magic, infile) ||
+	!gdGetIntLSB(&hdr->size, infile) ||
+	!gdGetWordLSB(&hdr->reserved1, infile) ||
+	!gdGetWordLSB(&hdr->reserved2 , infile) ||
+	!gdGetIntLSB(&hdr->off , infile)
+	) {
+		return 1;
+	}
+	return 0;
+}
+
+static int bmp_read_info(gdIOCtx *infile, bmp_info_t *info)
+{
+	/* read BMP length so we can work out the version */
+	if (!gdGetIntLSB(&info->len, infile)) {
+		return 1;
+	}
+
+	switch (info->len) {
+		/* For now treat Windows v4 + v5 as v3 */
+		case BMP_WINDOWS_V3:
+		case BMP_WINDOWS_V4:
+		case BMP_WINDOWS_V5:
+			BMP_DEBUG(printf("Reading Windows Header\n"));
+			if (bmp_read_windows_v3_info(infile, info)) {
+				return 1;
+			}
+		break;
+		case BMP_OS2_V1:
+			if (bmp_read_os2_v1_info(infile, info)) {
+				return 1;
+			}
+		break;
+		case BMP_OS2_V2:
+			if (bmp_read_os2_v2_info(infile, info)) {
+				return 1;
+			}
+		break;
+		default:
+			BMP_DEBUG(printf("Unhandled bitmap\n"));
+			return 1;
+	}
+	return 0;
+}
+
+static int bmp_read_windows_v3_info(gdIOCtxPtr infile, bmp_info_t *info)
+{
+	if (
+		!gdGetIntLSB(&info->width, infile) ||
+		!gdGetIntLSB(&info->height, infile) ||
+		!gdGetWordLSB(&info->numplanes, infile) ||
+		!gdGetWordLSB(&info->depth, infile) ||
+		!gdGetIntLSB(&info->enctype, infile) ||
+		!gdGetIntLSB(&info->size, infile) ||
+		!gdGetIntLSB(&info->hres, infile) ||
+		!gdGetIntLSB(&info->vres, infile) ||
+		!gdGetIntLSB(&info->numcolors, infile) ||
+		!gdGetIntLSB(&info->mincolors, infile)
+	) {
+		return 1;
+	}
+
+	if (info->height < 0) {
+		info->topdown = 1;
+		info->height = -info->height;
+	} else {
+		info->topdown = 0;
+	}
+
+	info->type = BMP_PALETTE_4;
+
+	if (info->width <= 0 || info->height <= 0 || info->numplanes <= 0 ||
+	  info->depth <= 0  || info->numcolors < 0 || info->mincolors < 0) {
+		return 1;
+	}
+
+	return 0;
+}
+
+static int bmp_read_os2_v1_info(gdIOCtxPtr infile, bmp_info_t *info)
+{
+	if (
+		!gdGetWordLSB((signed short int *)&info->width, infile) ||
+		!gdGetWordLSB((signed short int *)&info->height, infile) ||
+		!gdGetWordLSB(&info->numplanes, infile) ||
+		!gdGetWordLSB(&info->depth, infile)
+	) {
+		return 1;
+	}
+
+	/* OS2 v1 doesn't support topdown */
+	info->topdown = 0;
+
+	info->numcolors = 1 << info->depth;
+	info->type = BMP_PALETTE_3;
+
+	if (info->width <= 0 || info->height <= 0 || info->numplanes <= 0 ||
+	  info->depth <= 0 || info->numcolors < 0) {
+		return 1;
+	}
+
+	return 0;
+}
+
+static int bmp_read_os2_v2_info(gdIOCtxPtr infile, bmp_info_t *info)
+{
+	char useless_bytes[24];
+	if (
+		!gdGetIntLSB(&info->width, infile) ||
+		!gdGetIntLSB(&info->height, infile) ||
+		!gdGetWordLSB(&info->numplanes, infile) ||
+		!gdGetWordLSB(&info->depth, infile) ||
+		!gdGetIntLSB(&info->enctype, infile) ||
+		!gdGetIntLSB(&info->size, infile) ||
+		!gdGetIntLSB(&info->hres, infile) ||
+		!gdGetIntLSB(&info->vres, infile) ||
+		!gdGetIntLSB(&info->numcolors, infile) ||
+		!gdGetIntLSB(&info->mincolors, infile)
+	) {
+		return 1;
+	}
+
+	/* Lets seek the next 24 pointless bytes, we don't care too much about it */
+	if (!gdGetBuf(useless_bytes, 24, infile)) {
+		return 1;
+	}
+
+	if (info->height < 0) {
+		info->topdown = 1;
+		info->height = -info->height;
+	} else {
+		info->topdown = 0;
+	}
+
+	info->type = BMP_PALETTE_4;
+
+	if (info->width <= 0 || info->height <= 0 || info->numplanes <= 0 ||
+	 info->depth <= 0  || info->numcolors < 0 || info->mincolors < 0) {
+		return 1;
+	}
+
+
+	return 0;
+}
+
+static int bmp_read_direct(gdImagePtr im, gdIOCtxPtr infile, bmp_info_t *info, bmp_hdr_t *header)
+{
+	int ypos = 0, xpos = 0, row = 0;
+	int padding = 0, alpha = 0, red = 0, green = 0, blue = 0;
+	signed short int data = 0;
+
+	switch(info->enctype) {
+		case BMP_BI_RGB:
+			/* no-op */
+		break;
+
+		case BMP_BI_BITFIELDS:
+			if (info->depth == 24) {
+				BMP_DEBUG(printf("Bitfield compression isn't supported for 24-bit\n"));
+				return 1;
+			}
+			BMP_DEBUG(printf("Currently no bitfield support\n"));
+			return 1;
+		break;
+
+		case BMP_BI_RLE8:
+			if (info->depth != 8) {
+				BMP_DEBUG(printf("RLE is only valid for 8-bit images\n"));
+				return 1;
+			}
+		case BMP_BI_RLE4:
+			if (info->depth != 4) {
+				BMP_DEBUG(printf("RLE is only valid for 4-bit images\n"));
+				return 1;
+			}
+		case BMP_BI_JPEG:
+		case BMP_BI_PNG:
+		default:
+			BMP_DEBUG(printf("Unsupported BMP compression format\n"));
+			return 1;
+	}
+
+	/* There is a chance the data isn't until later, would be wierd but it is possible */
+	if (gdTell(infile) != header->off) {
+		/* Should make sure we don't seek past the file size */
+		gdSeek(infile, header->off);
+	}
+
+	/* The line must be divisible by 4, else its padded with NULLs */
+	padding = ((int)(info->depth / 8) * info->width) % 4;
+	if (padding) {
+		padding = 4 - padding;
+	}
+
+
+	for (ypos = 0; ypos < info->height; ++ypos) {
+		if (info->topdown) {
+			row = ypos;
+		} else {
+			row = info->height - ypos - 1;
+		}
+
+		for (xpos = 0; xpos < info->width; xpos++) {
+			if (info->depth == 16) {
+				if (!gdGetWordLSB(&data, infile)) {
+					return 1;
+				}
+				BMP_DEBUG(printf("Data: %X\n", data));
+				red = ((data & 0x7C00) >> 10) << 3;
+				green = ((data & 0x3E0) >> 5) << 3;
+				blue = (data & 0x1F) << 3;
+				BMP_DEBUG(printf("R: %d, G: %d, B: %d\n", red, green, blue));
+			} else if (info->depth == 24) {
+				if (!gdGetByte(&blue, infile) || !gdGetByte(&green, infile) || !gdGetByte(&red, infile)) {
+					return 1;
+				}
+			} else {
+				if (!gdGetByte(&blue, infile) || !gdGetByte(&green, infile) || !gdGetByte(&red, infile) || !gdGetByte(&alpha, infile)) {
+					return 1;
+				}
+			}
+			/*alpha = gdAlphaMax - (alpha >> 1);*/
+			gdImageSetPixel(im, xpos, row, gdTrueColor(red, green, blue));
+		}
+		for (xpos = padding; xpos > 0; --xpos) {
+			if (!gdGetByte(&red, infile)) {
+				return 1;
+			}
+		}
+	}
+
+	return 0;
+}
+
+static int bmp_read_palette(gdImagePtr im, gdIOCtxPtr infile, int count, int read_four)
+{
+	int i;
+	int r, g, b, z;
+
+	for (i = 0; i < count; i++) {
+		if (
+		!gdGetByte(&r, infile) ||
+		!gdGetByte(&g, infile) ||
+		!gdGetByte(&b, infile) ||
+		(read_four && !gdGetByte(&z, infile))
+		) {
+			return 1;
+		}
+		im->red[i] = r;
+		im->green[i] = g;
+		im->blue[i] = b;
+		im->open[i] = 1;
+	}
+	return 0;
+}
+
+static int bmp_read_1bit(gdImagePtr im, gdIOCtxPtr infile, bmp_info_t *info, bmp_hdr_t *header)
+{
+	int ypos = 0, xpos = 0, row = 0, index = 0;
+	int padding = 0, current_byte = 0, bit = 0;
+
+	if (info->enctype != BMP_BI_RGB) {
+		return 1;
+	}
+
+	if (!info->numcolors) {
+		info->numcolors = 2;
+	} else if (info->numcolors < 0 || info->numcolors > 2) {
+		return 1;
+	}
+
+	if (bmp_read_palette(im, infile, info->numcolors, (info->type == BMP_PALETTE_4))) {
+		return 1;
+	}
+
+	im->colorsTotal = info->numcolors;
+
+	/* There is a chance the data isn't until later, would be wierd but it is possible */
+	if (gdTell(infile) != header->off) {
+		/* Should make sure we don't seek past the file size */
+		gdSeek(infile, header->off);
+	}
+
+	/* The line must be divisible by 4, else its padded with NULLs */
+	padding = ((int)ceill(0.1 * info->width)) % 4;
+	if (padding) {
+		padding = 4 - padding;
+	}
+
+	for (ypos = 0; ypos < info->height; ++ypos) {
+		if (info->topdown) {
+			row = ypos;
+		} else {
+			row = info->height - ypos - 1;
+		}
+
+		for (xpos = 0; xpos < info->width; xpos += 8) {
+			/* Bitmaps are always aligned in bytes so we'll never overflow */
+			if (!gdGetByte(&current_byte, infile)) {
+				return 1;
+			}
+
+			for (bit = 0; bit < 8; bit++) {
+				index = ((current_byte & (0x80 >> bit)) != 0 ? 0x01 : 0x00);
+				if (im->open[index]) {
+					im->open[index] = 0;
+				}
+				gdImageSetPixel(im, xpos + bit, row, index);
+				/* No need to read anything extra */
+				if ((xpos + bit) >= info->width) {
+					break;
+				}
+			}
+		}
+
+		for (xpos = padding; xpos > 0; --xpos) {
+			if (!gdGetByte(&index, infile)) {
+				return 1;
+			}
+		}
+	}
+	return 0;
+}
+
+static int bmp_read_4bit(gdImagePtr im, gdIOCtxPtr infile, bmp_info_t *info, bmp_hdr_t *header)
+{
+	int ypos = 0, xpos = 0, row = 0, index = 0;
+	int padding = 0, current_byte = 0;
+
+	if (info->enctype != BMP_BI_RGB && info->enctype != BMP_BI_RLE4) {
+		return 1;
+	}
+
+	if (!info->numcolors) {
+		info->numcolors = 16;
+	} else if (info->numcolors < 0 || info->numcolors > 16) {
+		return 1;
+	}
+
+	if (bmp_read_palette(im, infile, info->numcolors, (info->type == BMP_PALETTE_4))) {
+		return 1;
+	}
+
+	im->colorsTotal = info->numcolors;
+
+	/* There is a chance the data isn't until later, would be wierd but it is possible */
+	if (gdTell(infile) != header->off) {
+		/* Should make sure we don't seek past the file size */
+		gdSeek(infile, header->off);
+	}
+
+	/* The line must be divisible by 4, else its padded with NULLs */
+	padding = ((int)ceil(0.5 * info->width)) % 4;
+	if (padding) {
+		padding = 4 - padding;
+	}
+
+	switch (info->enctype) {
+		case BMP_BI_RGB:
+		for (ypos = 0; ypos < info->height; ++ypos) {
+			if (info->topdown) {
+				row = ypos;
+			} else {
+				row = info->height - ypos - 1;
+			}
+
+			for (xpos = 0; xpos < info->width; xpos += 2) {
+				if (!gdGetByte(&current_byte, infile)) {
+					return 1;
+				}
+
+				index = (current_byte >> 4) & 0x0f;
+				if (im->open[index]) {
+					im->open[index] = 0;
+				}
+				gdImageSetPixel(im, xpos, row, index);
+
+				/* This condition may get called often, potential optimsations */
+				if (xpos >= info->width) {
+					break;
+				}
+
+				index = current_byte & 0x0f;
+				if (im->open[index]) {
+					im->open[index] = 0;
+				}
+				gdImageSetPixel(im, xpos + 1, row, index);
+			}
+
+			for (xpos = padding; xpos > 0; --xpos) {
+				if (!gdGetByte(&index, infile)) {
+					return 1;
+				}
+			}
+		}
+		break;
+
+		case BMP_BI_RLE4:
+		if (bmp_read_rle(im, infile, info)) {
+			return 1;
+		}
+		break;
+
+		default:
+			return 1;
+	}
+	return 0;
+}
+
+static int bmp_read_8bit(gdImagePtr im, gdIOCtxPtr infile, bmp_info_t *info, bmp_hdr_t *header)
+{
+	int ypos = 0, xpos = 0, row = 0, index = 0;
+	int padding = 0;
+
+	if (info->enctype != BMP_BI_RGB && info->enctype != BMP_BI_RLE8) {
+		return 1;
+	}
+
+	if (!info->numcolors) {
+		info->numcolors = 256;
+	} else if (info->numcolors < 0 || info->numcolors > 256) {
+		return 1;
+	}
+
+	if (bmp_read_palette(im, infile, info->numcolors, (info->type == BMP_PALETTE_4))) {
+		return 1;
+	}
+
+	im->colorsTotal = info->numcolors;
+
+	/* There is a chance the data isn't until later, would be wierd but it is possible */
+	if (gdTell(infile) != header->off) {
+		/* Should make sure we don't seek past the file size */
+		gdSeek(infile, header->off);
+	}
+
+	/* The line must be divisible by 4, else its padded with NULLs */
+	padding = (1 * info->width) % 4;
+	if (padding) {
+		padding = 4 - padding;
+	}
+
+	switch (info->enctype) {
+		case BMP_BI_RGB:
+		for (ypos = 0; ypos < info->height; ++ypos) {
+			if (info->topdown) {
+				row = ypos;
+			} else {
+				row = info->height - ypos - 1;
+			}
+
+			for (xpos = 0; xpos < info->width; ++xpos) {
+				if (!gdGetByte(&index, infile)) {
+					return 1;
+				}
+
+				if (im->open[index]) {
+					im->open[index] = 0;
+				}
+				gdImageSetPixel(im, xpos, row, index);
+			}
+			/* Could create a new variable, but it isn't really worth it */
+			for (xpos = padding; xpos > 0; --xpos) {
+				if (!gdGetByte(&index, infile)) {
+					return 1;
+				}
+			}
+		}
+		break;
+
+		case BMP_BI_RLE8:
+		if (bmp_read_rle(im, infile, info)) {
+			return 1;
+		}
+		break;
+
+		default:
+			return 1;
+	}
+	return 0;
+}
+
+static int bmp_read_rle(gdImagePtr im, gdIOCtxPtr infile, bmp_info_t *info)
+{
+	int ypos = 0, xpos = 0, row = 0, index = 0;
+	int rle_length = 0, rle_data = 0;
+	int padding = 0;
+	int i = 0, j = 0;
+	int pixels_per_byte = 8 / info->depth;
+
+	for (ypos = 0; ypos < info->height && xpos <= info->width;) {
+		if (!gdGetByte(&rle_length, infile) || !gdGetByte(&rle_data, infile)) {
+			return 1;
+		}
+		row = info->height - ypos - 1;
+
+		if (rle_length != BMP_RLE_COMMAND) {
+			if (im->open[rle_data]) {
+				im->open[rle_data] = 0;
+			}
+
+			for (i = 0; (i < rle_length) && (xpos < info->width);) {
+				for (j = 1; (j <= pixels_per_byte) && (xpos < info->width) && (i < rle_length); j++, xpos++, i++) {
+					index = (rle_data & (((1 << info->depth) - 1) << (8 - (j * info->depth)))) >> (8 - (j * info->depth));
+					if (im->open[index]) {
+						im->open[index] = 0;
+					}
+					gdImageSetPixel(im, xpos, row, index);
+				}
+			}
+		} else if (rle_length == BMP_RLE_COMMAND && rle_data > 2) {
+			/* Uncompressed RLE needs to be even */
+			padding = 0;
+			for (i = 0; (i < rle_data) && (xpos < info->width); i += pixels_per_byte) {
+				int max_pixels = pixels_per_byte;
+
+				if (!gdGetByte(&index, infile)) {
+					return 1;
+				}
+				padding++;
+
+				if (rle_data - i < max_pixels) {
+					max_pixels = rle_data - i;
+				}
+
+				for (j = 1; (j <= max_pixels)  && (xpos < info->width); j++, xpos++) {
+					int temp = (index >> (8 - (j * info->depth))) & ((1 << info->depth) - 1);
+					if (im->open[temp]) {
+						im->open[temp] = 0;
+					}
+					gdImageSetPixel(im, xpos, row, temp);
+				}
+			}
+
+			/* Make sure the bytes read are even */
+			if (padding % 2 && !gdGetByte(&index, infile)) {
+				return 1;
+			}
+		} else if (rle_length == BMP_RLE_COMMAND && rle_data == BMP_RLE_ENDOFLINE) {
+			/* Next Line */
+			xpos = 0;
+			ypos++;
+		} else if (rle_length == BMP_RLE_COMMAND && rle_data == BMP_RLE_DELTA) {
+			/* Delta Record, used for bmp files that contain other data*/
+			if (!gdGetByte(&rle_length, infile) || !gdGetByte(&rle_data, infile)) {
+				return 1;
+			}
+			xpos += rle_length;
+			ypos += rle_data;
+		} else if (rle_length == BMP_RLE_COMMAND && rle_data == BMP_RLE_ENDOFBITMAP) {
+			/* End of bitmap */
+			break;
+		}
+	}
+	return 0;
+}
+
+#if GD_MAJOR_VERSION == 2 && GD_MINOR_VERSION < 1
+static int gdGetWordLSB(signed short int *result, gdIOCtx * ctx)
+{
+	unsigned int high = 0, low = 0;
+	low = (ctx->getC) (ctx);
+	if (low == EOF) {
+ 		return 0;
+	}
+
+	high = (ctx->getC) (ctx);
+	if (high == EOF) {
+ 		return 0;
+	}
+
+	if (result) {
+		*result = (high << 8) | low;
+	}
+
+	return 1;
+}
+
+static int gdGetIntLSB(signed int *result, gdIOCtx * ctx)
+{
+	int c = 0;
+	unsigned int r = 0;
+
+	c = (ctx->getC) (ctx);
+	if (c == EOF) {
+ 		return 0;
+	}
+	r |= (c << 24);
+	r >>= 8;
+
+	c = (ctx->getC) (ctx);
+	if (c == EOF) {
+ 		return 0;
+	}
+	r |= (c << 24);
+	r >>= 8;
+
+	c = (ctx->getC) (ctx);
+	if (c == EOF) {
+ 		return 0;
+	}
+	r |= (c << 24);
+	r >>= 8;
+
+	c = (ctx->getC) (ctx);
+	if (c == EOF) {
+ 		return 0;
+	}
+	r |= (c << 24);
+
+	if (result) {
+		*result = (signed int)r;
+	}
+
+	return 1;
+}
+#endif