mirror of
https://github.com/cc65/cc65.git
synced 2025-02-15 10:30:58 +00:00
144 lines
4.8 KiB
C
144 lines
4.8 KiB
C
/*****************************************************************************/
|
|
/* */
|
|
/* palette.c */
|
|
/* */
|
|
/* Color palette definition for the sp65 sprite and bitmap utility */
|
|
/* */
|
|
/* */
|
|
/* */
|
|
/* (C) 2012, Ullrich von Bassewitz */
|
|
/* Roemerstrasse 52 */
|
|
/* D-70794 Filderstadt */
|
|
/* EMail: uz@cc65.org */
|
|
/* */
|
|
/* */
|
|
/* This software is provided 'as-is', without any expressed or implied */
|
|
/* warranty. In no event will the authors be held liable for any damages */
|
|
/* arising from the use of this software. */
|
|
/* */
|
|
/* Permission is granted to anyone to use this software for any purpose, */
|
|
/* including commercial applications, and to alter it and redistribute it */
|
|
/* freely, subject to the following restrictions: */
|
|
/* */
|
|
/* 1. The origin of this software must not be misrepresented; you must not */
|
|
/* claim that you wrote the original software. If you use this software */
|
|
/* in a product, an acknowledgment in the product documentation would be */
|
|
/* appreciated but is not required. */
|
|
/* 2. Altered source versions must be plainly marked as such, and must not */
|
|
/* be misrepresented as being the original software. */
|
|
/* 3. This notice may not be removed or altered from any source */
|
|
/* distribution. */
|
|
/* */
|
|
/*****************************************************************************/
|
|
|
|
|
|
|
|
#include <string.h>
|
|
|
|
/* common */
|
|
#include "check.h"
|
|
#include "xmalloc.h"
|
|
|
|
/* sp65 */
|
|
#include "palette.h"
|
|
|
|
|
|
|
|
/*****************************************************************************/
|
|
/* Code */
|
|
/*****************************************************************************/
|
|
|
|
|
|
|
|
Palette* NewPalette (unsigned Entries)
|
|
/* Create a new palette with the given number of entries */
|
|
{
|
|
Palette* P;
|
|
|
|
/* Some safety checks */
|
|
PRECONDITION (Entries > 0 && Entries <= 256);
|
|
|
|
/* Allocate memory */
|
|
P = xmalloc (sizeof (*P) + (Entries - 1) * sizeof (P->Entries[0]));
|
|
|
|
/* Initialize the struct, then return it */
|
|
P->Count = Entries;
|
|
return P;
|
|
}
|
|
|
|
|
|
|
|
Palette* NewMonochromePalette (void)
|
|
/* Create and return a palette with two entries (black and white) */
|
|
{
|
|
/* Create a new palette */
|
|
Palette* P = NewPalette (2);
|
|
|
|
/* Set the two colors */
|
|
P->Entries[0] = RGBA (0x00, 0x00, 0x00, 0x00);
|
|
P->Entries[1] = RGBA (0xFF, 0xFF, 0xFF, 0x00);
|
|
|
|
/* Return the new palette */
|
|
return P;
|
|
}
|
|
|
|
|
|
|
|
Palette* DupPalette (const Palette* P)
|
|
/* Create a copy of a palette */
|
|
{
|
|
Palette* N;
|
|
|
|
|
|
/* Allow to pass a NULL palette */
|
|
if (P == 0) {
|
|
return 0;
|
|
}
|
|
|
|
/* Create a new palette */
|
|
N = NewPalette (P->Count);
|
|
|
|
/* Copy the palette data */
|
|
memcpy (N->Entries, P->Entries, P->Count * sizeof (P->Entries[0]));
|
|
|
|
/* Return the copy */
|
|
return N;
|
|
}
|
|
|
|
|
|
|
|
void FreePalette (Palette* P)
|
|
/* Free a dynamically allocated palette */
|
|
{
|
|
xfree (P);
|
|
}
|
|
|
|
|
|
|
|
void DumpPalette (FILE* F, const Palette* P)
|
|
/* Dump the palette in readable form to the given file */
|
|
{
|
|
unsigned I;
|
|
|
|
fputs ("Entry R G B A Combined\n", F);
|
|
fputs ("----------------------------------------------\n", F);
|
|
for (I = 0; I < P->Count; ++I) {
|
|
|
|
/* Get the color entry */
|
|
const Color* C = P->Entries + I;
|
|
|
|
/* Output it */
|
|
fprintf (F,
|
|
" %3u %3u %3u %3u %3u #%08lX\n",
|
|
I,
|
|
C->R, C->G, C->B, C->A,
|
|
(((unsigned long) C->A) << 24) |
|
|
(((unsigned long) C->B) << 16) |
|
|
(((unsigned long) C->G) << 8) |
|
|
(((unsigned long) C->R) << 0));
|
|
}
|
|
}
|
|
|
|
|
|
|