FFmpeg  1.2.4
drawutils.h
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #ifndef AVFILTER_DRAWUTILS_H
20 #define AVFILTER_DRAWUTILS_H
21 
27 #include <stdint.h>
28 #include "avfilter.h"
29 #include "libavutil/pixfmt.h"
30 
31 int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt);
32 
33 int ff_fill_line_with_color(uint8_t *line[4], int pixel_step[4], int w,
34  uint8_t dst_color[4],
35  enum AVPixelFormat pix_fmt, uint8_t rgba_color[4],
36  int *is_packed_rgba, uint8_t rgba_map[4]);
37 
38 void ff_draw_rectangle(uint8_t *dst[4], int dst_linesize[4],
39  uint8_t *src[4], int pixelstep[4],
40  int hsub, int vsub, int x, int y, int w, int h);
41 
42 void ff_copy_rectangle(uint8_t *dst[4], int dst_linesize[4],
43  uint8_t *src[4], int src_linesize[4], int pixelstep[4],
44  int hsub, int vsub, int x, int y, int y2, int w, int h);
45 
46 #define MAX_PLANES 4
47 
48 typedef struct FFDrawContext {
49  const struct AVPixFmtDescriptor *desc;
51  unsigned nb_planes;
52  int pixelstep[MAX_PLANES]; /*< offset between pixels */
53  uint8_t comp_mask[MAX_PLANES]; /*< bitmask of used non-alpha components */
54  uint8_t hsub[MAX_PLANES]; /*< horizontal subsampling */
55  uint8_t vsub[MAX_PLANES]; /*< vertical subsampling */
59 
60 typedef struct FFDrawColor {
62  union {
63  uint32_t u32;
64  uint16_t u16;
65  uint8_t u8[4];
66  } comp[MAX_PLANES];
67 } FFDrawColor;
68 
77 int ff_draw_init(FFDrawContext *draw, enum AVPixelFormat format, unsigned flags);
78 
82 void ff_draw_color(FFDrawContext *draw, FFDrawColor *color, const uint8_t rgba[4]);
83 
90  uint8_t *dst[], int dst_linesize[],
91  uint8_t *src[], int src_linesize[],
92  int dst_x, int dst_y, int src_x, int src_y,
93  int w, int h);
94 
102  uint8_t *dst[], int dst_linesize[],
103  int dst_x, int dst_y, int w, int h);
104 
109  uint8_t *dst[], int dst_linesize[],
110  int dst_w, int dst_h,
111  int x0, int y0, int w, int h);
112 
132  uint8_t *dst[], int dst_linesize[], int dst_w, int dst_h,
133  uint8_t *mask, int mask_linesize, int mask_w, int mask_h,
134  int l2depth, unsigned endianness, int x0, int y0);
135 
145 int ff_draw_round_to_sub(FFDrawContext *draw, int sub_dir, int round_dir,
146  int value);
147 
154 
155 #endif /* AVFILTER_DRAWUTILS_H */