Updated Changelog for 0.8.10
[ffmpeg.git] / libavfilter / vf_split.c
1 /*
2  * Copyright (c) 2007 Bobby Bingham
3  *
4  * This file is part of Libav.
5  *
6  * Libav is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * Libav is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with Libav; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * Video splitter
24  */
25
26 #include "avfilter.h"
27
28 static void start_frame(AVFilterLink *inlink, AVFilterBufferRef *picref)
29 {
30     avfilter_start_frame(inlink->dst->outputs[0],
31                          avfilter_ref_buffer(picref, ~AV_PERM_WRITE));
32     avfilter_start_frame(inlink->dst->outputs[1],
33                          avfilter_ref_buffer(picref, ~AV_PERM_WRITE));
34 }
35
36 static void draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir)
37 {
38     avfilter_draw_slice(inlink->dst->outputs[0], y, h, slice_dir);
39     avfilter_draw_slice(inlink->dst->outputs[1], y, h, slice_dir);
40 }
41
42 static void end_frame(AVFilterLink *inlink)
43 {
44     avfilter_end_frame(inlink->dst->outputs[0]);
45     avfilter_end_frame(inlink->dst->outputs[1]);
46
47     avfilter_unref_buffer(inlink->cur_buf);
48 }
49
50 AVFilter avfilter_vf_split = {
51     .name      = "split",
52     .description = NULL_IF_CONFIG_SMALL("Pass on the input to two outputs."),
53
54     .inputs    = (AVFilterPad[]) {{ .name            = "default",
55                                     .type            = AVMEDIA_TYPE_VIDEO,
56                                     .get_video_buffer= avfilter_null_get_video_buffer,
57                                     .start_frame     = start_frame,
58                                     .draw_slice      = draw_slice,
59                                     .end_frame       = end_frame, },
60                                   { .name = NULL}},
61     .outputs   = (AVFilterPad[]) {{ .name            = "output1",
62                                     .type            = AVMEDIA_TYPE_VIDEO, },
63                                   { .name            = "output2",
64                                     .type            = AVMEDIA_TYPE_VIDEO, },
65                                   { .name = NULL}},
66 };