1 /*
2 * Copyright (c) 2013 Vittorio Giovara <vittorio.giovara@gmail.com>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg 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 * FFmpeg 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 FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include <string.h>
22
23 #include "avstring.h"
24 #include "common.h"
25 #include "mem.h"
26 #include "stereo3d.h"
27
av_stereo3d_alloc(void)28 AVStereo3D *av_stereo3d_alloc(void)
29 {
30 return av_mallocz(sizeof(AVStereo3D));
31 }
32
av_stereo3d_create_side_data(AVFrame * frame)33 AVStereo3D *av_stereo3d_create_side_data(AVFrame *frame)
34 {
35 AVFrameSideData *side_data = av_frame_new_side_data(frame,
36 AV_FRAME_DATA_STEREO3D,
37 sizeof(AVStereo3D));
38 if (!side_data)
39 return NULL;
40
41 memset(side_data->data, 0, sizeof(AVStereo3D));
42
43 return (AVStereo3D *)side_data->data;
44 }
45
46 static const char * const stereo3d_type_names[] = {
47 [AV_STEREO3D_2D] = "2D",
48 [AV_STEREO3D_SIDEBYSIDE] = "side by side",
49 [AV_STEREO3D_TOPBOTTOM] = "top and bottom",
50 [AV_STEREO3D_FRAMESEQUENCE] = "frame alternate",
51 [AV_STEREO3D_CHECKERBOARD] = "checkerboard",
52 [AV_STEREO3D_SIDEBYSIDE_QUINCUNX] = "side by side (quincunx subsampling)",
53 [AV_STEREO3D_LINES] = "interleaved lines",
54 [AV_STEREO3D_COLUMNS] = "interleaved columns",
55 };
56
av_stereo3d_type_name(unsigned int type)57 const char *av_stereo3d_type_name(unsigned int type)
58 {
59 if (type >= FF_ARRAY_ELEMS(stereo3d_type_names))
60 return "unknown";
61
62 return stereo3d_type_names[type];
63 }
64
av_stereo3d_from_name(const char * name)65 int av_stereo3d_from_name(const char *name)
66 {
67 int i;
68
69 for (i = 0; i < FF_ARRAY_ELEMS(stereo3d_type_names); i++) {
70 if (av_strstart(name, stereo3d_type_names[i], NULL))
71 return i;
72 }
73
74 return -1;
75 }
76