Added three sample video hooks. See the (rudimentary) documentation on what
[libav.git] / vhook / null.c
1 /*
2 * Null Video Hook
3 * Copyright (c) 2002 Philip Gladstone
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
19 #include <stdio.h>
20
21 #include "framehook.h"
22
23 typedef struct {
24 int dummy;
25 } ContextInfo;
26
27
28 int Configure(void **ctxp, int argc, char *argv[])
29 {
30 fprintf(stderr, "Called with argc=%d\n", argc);
31
32 *ctxp = av_mallocz(sizeof(ContextInfo));
33 return 0;
34 }
35
36 void Process(void *ctx, AVPicture *picture, enum PixelFormat pix_fmt, int width, int height, INT64 pts)
37 {
38 ContextInfo *ci = (ContextInfo *) ctx;
39 char *buf = 0;
40 AVPicture picture1;
41 AVPicture *pict = picture;
42
43 (void) ci;
44
45 if (pix_fmt != PIX_FMT_RGB24) {
46 int size;
47
48 size = avpicture_get_size(PIX_FMT_RGB24, width, height);
49 buf = av_malloc(size);
50
51 avpicture_fill(&picture1, buf, PIX_FMT_RGB24, width, height);
52 if (img_convert(&picture1, PIX_FMT_RGB24,
53 picture, pix_fmt, width, height) < 0) {
54 av_free(buf);
55 return;
56 }
57 pict = &picture1;
58 }
59
60 /* Insert filter code here */
61
62 if (pix_fmt != PIX_FMT_RGB24) {
63 if (img_convert(picture, pix_fmt,
64 &picture1, PIX_FMT_RGB24, width, height) < 0) {
65 }
66 }
67
68 av_free(buf);
69 }
70
71 /* To ensure correct typing */
72 FrameHookConfigureFn ConfigureFn = Configure;
73 FrameHookProcessFn ProcessFn = Process;