mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-12-02 19:06:57 +03:00
80 lines
2.4 KiB
C
Executable File
80 lines
2.4 KiB
C
Executable File
/*
|
|
* Copyright 2010 Ole Loots <ole@monochrom.net>
|
|
*
|
|
* 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/>.
|
|
*/
|
|
|
|
#ifndef NS_ATARI_BITMAP_H
|
|
#define NS_ATARI_BITMAP_H
|
|
|
|
#include <gem.h>
|
|
|
|
/* Flags for init_mfdb function: */
|
|
#define MFDB_FLAG_STAND 0x01
|
|
#define MFDB_FLAG_ZEROMEM 0x02
|
|
#define MFDB_FLAG_NOALLOC 0x04
|
|
|
|
#define BITMAP_SHRINK 0
|
|
#define BITMAP_GROW 1024 /* Don't realloc when bitmap size shrinks */
|
|
#define BITMAP_CLEAR 2048 /* Zero bitmap memory */
|
|
|
|
|
|
/*
|
|
calculates MFDB compatible rowstride (in number of bits)
|
|
*/
|
|
#define MFDB_STRIDE( w ) (((w & 15) != 0) ? (w | 15)+1 : w)
|
|
|
|
|
|
/*
|
|
Calculate size of an mfdb,
|
|
|
|
params:
|
|
|
|
bpp: Bits per pixel,
|
|
stride: Word aligned rowstride (width) as returned by MFDB_STRIDE,
|
|
h: Height in pixels
|
|
*/
|
|
#define MFDB_SIZE( bpp, stride, h ) ( ((stride >> 3) * h) * bpp )
|
|
|
|
struct bitmap {
|
|
int width;
|
|
int height;
|
|
uint8_t *pixdata;
|
|
bool opaque;
|
|
short bpp; /* number of BYTES! per pixel */
|
|
size_t rowstride;
|
|
struct bitmap * resized;
|
|
MFDB native;
|
|
bool converted;
|
|
};
|
|
|
|
#define NS_BMP_DEFAULT_BPP 4
|
|
|
|
void * bitmap_create_ex( int w, int h, short bpp, int rowstride, unsigned int state, void * pixdata );
|
|
void bitmap_to_mfdb(void * bitmap, MFDB * out);
|
|
void * bitmap_realloc( int w, int h, short bpp, int rowstride, unsigned int state, void * bmp );
|
|
size_t bitmap_buffer_size( void * bitmap ) ;
|
|
/*
|
|
setup an MFDB struct and allocate memory for it when it is needed.
|
|
If bpp == 0, this function assumes that the MFDB shall point to the screen
|
|
and will not allocate any memory (mfdb.fd_addr == 0).
|
|
The function will return 0 when the memory allocation fails
|
|
( out of memory), otherwise it returns the size of the mfdb.fd_addr
|
|
as number of bytes.
|
|
*/
|
|
int init_mfdb(int bpp, int w, int h, uint32_t flags, MFDB * out );
|
|
|
|
#endif
|