1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
/* Copyright (C) 2007-2008 The Android Open Source Project
**
** This software is licensed under the terms of the GNU General Public
** License version 2, as published by the Free Software Foundation, and
** may be copied, distributed, and modified under those terms.
**
** This program 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.
*/
#ifndef _ANDROID_SKIN_SURFACE_H
#define _ANDROID_SKIN_SURFACE_H
#include "android/skin/region.h"
#include <stdint.h>
/* a SkinSurface models a 32-bit ARGB pixel image that can be blitted to or from
*/
typedef struct SkinSurface SkinSurface;
/* increment surface's reference count */
extern SkinSurface* skin_surface_ref( SkinSurface* surface );
/* decrement a surface's reference count. takes the surface's address as parameter.
it will be set to NULL on exit */
extern void skin_surface_unrefp( SkinSurface* *psurface );
/* sets a callback that will be called when the surface is destroyed.
* used NULL for done_func to disable it
*/
typedef void (*SkinSurfaceDoneFunc)( void* user );
extern void skin_surface_set_done( SkinSurface* s, SkinSurfaceDoneFunc done_func, void* done_user );
/* there are two kinds of surfaces:
- fast surfaces, whose content can be placed in video memory or
RLE-compressed for faster blitting and blending. the pixel format
used internally might be something very different from ARGB32.
- slow surfaces, whose content (pixel buffer) can be accessed and modified
with _lock()/_unlock() but may be blitted far slower since they reside in
system memory.
*/
/* create a 'fast' surface that contains a copy of an input ARGB32 pixmap */
extern SkinSurface* skin_surface_create_fast( int w, int h );
/* create an empty 'slow' surface containing an ARGB32 pixmap */
extern SkinSurface* skin_surface_create_slow( int w, int h );
/* create a 'slow' surface from a given pixel buffer. if 'do_copy' is TRUE, then
* the content of 'pixels' is copied into a heap-allocated buffer. otherwise
* the data will be used directly.
*/
extern SkinSurface* skin_surface_create_argb32_from(
int w,
int h,
int pitch,
uint32_t* pixels,
int do_copy );
/* surface pixels information for slow surfaces */
typedef struct {
int w;
int h;
int pitch;
uint32_t* pixels;
} SkinSurfacePixels;
/* lock a slow surface, and returns its pixel information.
returns 0 in case of success, -1 otherwise */
extern int skin_surface_lock ( SkinSurface* s, SkinSurfacePixels *pix );
/* unlock a slow surface that was previously locked */
extern void skin_surface_unlock( SkinSurface* s );
/* list of composition operators for the blit routine */
typedef enum {
SKIN_BLIT_COPY = 0,
SKIN_BLIT_SRCOVER,
SKIN_BLIT_DSTOVER,
} SkinBlitOp;
/* blit a surface into another one */
extern void skin_surface_blit( SkinSurface* dst,
SkinPos* dst_pos,
SkinSurface* src,
SkinRect* src_rect,
SkinBlitOp blitop );
/* blit a colored rectangle into a destination surface */
extern void skin_surface_fill( SkinSurface* dst,
SkinRect* rect,
uint32_t argb_premul,
SkinBlitOp blitop );
#endif /* _ANDROID_SKIN_SURFACE_H */
|
