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 "frame.h" 25#include "macros.h" 26#include "mem.h" 27#include "stereo3d.h" 28 29AVStereo3D *av_stereo3d_alloc(void) 30{ 31 return av_mallocz(sizeof(AVStereo3D)); 32} 33 34AVStereo3D *av_stereo3d_create_side_data(AVFrame *frame) 35{ 36 AVFrameSideData *side_data = av_frame_new_side_data(frame, 37 AV_FRAME_DATA_STEREO3D, 38 sizeof(AVStereo3D)); 39 if (!side_data) 40 return NULL; 41 42 memset(side_data->data, 0, sizeof(AVStereo3D)); 43 44 return (AVStereo3D *)side_data->data; 45} 46 47static const char * const stereo3d_type_names[] = { 48 [AV_STEREO3D_2D] = "2D", 49 [AV_STEREO3D_SIDEBYSIDE] = "side by side", 50 [AV_STEREO3D_TOPBOTTOM] = "top and bottom", 51 [AV_STEREO3D_FRAMESEQUENCE] = "frame alternate", 52 [AV_STEREO3D_CHECKERBOARD] = "checkerboard", 53 [AV_STEREO3D_SIDEBYSIDE_QUINCUNX] = "side by side (quincunx subsampling)", 54 [AV_STEREO3D_LINES] = "interleaved lines", 55 [AV_STEREO3D_COLUMNS] = "interleaved columns", 56}; 57 58const char *av_stereo3d_type_name(unsigned int type) 59{ 60 if (type >= FF_ARRAY_ELEMS(stereo3d_type_names)) 61 return "unknown"; 62 63 return stereo3d_type_names[type]; 64} 65 66int av_stereo3d_from_name(const char *name) 67{ 68 int i; 69 70 for (i = 0; i < FF_ARRAY_ELEMS(stereo3d_type_names); i++) { 71 if (av_strstart(name, stereo3d_type_names[i], NULL)) 72 return i; 73 } 74 75 return -1; 76} 77