blob: a53836424df32177dd4002fec955575e6aad3f47
| 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 <stdint.h> |
| 22 | #include <string.h> |
| 23 | |
| 24 | #include "common.h" |
| 25 | #include "mem.h" |
| 26 | #include "stereo3d.h" |
| 27 | |
| 28 | AVStereo3D *av_stereo3d_alloc(void) |
| 29 | { |
| 30 | return av_mallocz(sizeof(AVStereo3D)); |
| 31 | } |
| 32 | |
| 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 *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 | |
| 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 | |
| 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 | size_t len = strlen(stereo3d_type_names[i]); |
| 71 | if (!strncmp(stereo3d_type_names[i], name, len)) |
| 72 | return i; |
| 73 | } |
| 74 | |
| 75 | return -1; |
| 76 | } |
| 77 |