Create Subversion repository

git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@1 9d0c8265-081b-0410-96cb-a4ca84ce46f8

1 files changed, 90 insertions, 0 deletions

diff --git a/other/pamx/image.h b/other/pamx/image.h
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+++ b/other/pamx/image.h
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+#ifndef IMAGE_H_INCLUDED
+#define IMAGE_H_INCLUDED
+#include <strings.h>
+
+#include "pm_c_util.h"
+
+#include "ximageinfo.h"
+
+typedef struct rgbmap {
+    unsigned int size;       /* size of RGB map */
+    unsigned int used;       /* number of colors used in RGB map */
+    bool         compressed; /* image uses colormap fully */
+    Intensity *  red;        /* color values in X style */
+    Intensity *  grn;
+    Intensity *  blu;
+} RGBMap;
+
+typedef struct Image {
+    unsigned int    type;   /* type of image */
+    RGBMap          rgb;    /* RGB map of image if IRGB type */
+    unsigned int    width;  /* width of image in pixels */
+    unsigned int    height; /* height of image in pixels */
+    unsigned int    depth;  /* depth of image in bits if IRGB type */
+    unsigned int    pixlen; /* length of pixel if IRGB type */
+    unsigned char * data;   /* data rounded to full byte for each row */
+} Image;
+
+#define IBAD    0 /* invalid image (used when freeing) */
+#define IBITMAP 1 /* image is a bitmap */
+#define IRGB    2 /* image is RGB */
+#define ITRUE   3 /* image is true color */
+
+#define BITMAPP(IMAGE) ((IMAGE)->type == IBITMAP)
+#define RGBP(IMAGE)    ((IMAGE)->type == IRGB)
+#define TRUEP(IMAGE)   ((IMAGE)->type == ITRUE)
+
+#define TRUE_RED(PIXVAL)   (((PIXVAL) & 0xff0000) >> 16)
+#define TRUE_GRN(PIXVAL) (((PIXVAL) & 0xff00) >> 8)
+#define TRUE_BLU(PIXVAL)  ((PIXVAL) & 0xff)
+#define RGB_TO_TRUE(R,G,B) \
+  (((unsigned int)((R) & 0xff00) << 8) | ((unsigned int)(G) & 0xff00) | \
+   ((unsigned int)(B) >> 8))
+
+unsigned long
+colorsToDepth(unsigned long const ncolors);
+
+void
+assertGoodImage(Image * const imageP);
+
+Image *
+newBitImage(unsigned int const width,
+            unsigned int const height);
+
+Image *
+newRGBImage(unsigned int const width,
+            unsigned int const height,
+            unsigned int const depth);
+
+Image *
+newTrueImage(unsigned int const width,
+             unsigned int const height);
+
+void
+freeImage(Image * const imageP);
+
+unsigned int
+depthToColors(unsigned int const depth);
+
+extern unsigned short RedIntensity[];
+extern unsigned short GreenIntensity[];
+extern unsigned short BlueIntensity[];
+
+static __inline__ unsigned int
+colorIntensity(unsigned int const red,
+               unsigned int const grn,
+               unsigned int const blu) {
+/*----------------------------------------------------------------------------
+  Return the (approximate) intensity of a color.
+-----------------------------------------------------------------------------*/
+    return (RedIntensity[red / 256] +
+            GreenIntensity[grn / 256] +
+            BlueIntensity[blu / 256]);
+}
+
+Image *
+pbmLoad(const char * const fullname,
+        const char * const name,
+        bool         const verbose);
+
+#endif