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13e98f1daf
It makes the intent clearer and avoids calculating the length separately. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
/*
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* Copyright (c) 2013 Vittorio Giovara <vittorio.giovara@gmail.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <string.h>
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#include "avstring.h"
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#include "common.h"
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#include "mem.h"
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#include "stereo3d.h"
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AVStereo3D *av_stereo3d_alloc(void)
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{
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return av_mallocz(sizeof(AVStereo3D));
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}
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AVStereo3D *av_stereo3d_create_side_data(AVFrame *frame)
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{
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AVFrameSideData *side_data = av_frame_new_side_data(frame,
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AV_FRAME_DATA_STEREO3D,
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sizeof(AVStereo3D));
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if (!side_data)
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return NULL;
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memset(side_data->data, 0, sizeof(AVStereo3D));
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return (AVStereo3D *)side_data->data;
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}
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static const char * const stereo3d_type_names[] = {
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[AV_STEREO3D_2D] = "2D",
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[AV_STEREO3D_SIDEBYSIDE] = "side by side",
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[AV_STEREO3D_TOPBOTTOM] = "top and bottom",
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[AV_STEREO3D_FRAMESEQUENCE] = "frame alternate",
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[AV_STEREO3D_CHECKERBOARD] = "checkerboard",
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[AV_STEREO3D_SIDEBYSIDE_QUINCUNX] = "side by side (quincunx subsampling)",
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[AV_STEREO3D_LINES] = "interleaved lines",
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[AV_STEREO3D_COLUMNS] = "interleaved columns",
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};
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const char *av_stereo3d_type_name(unsigned int type)
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{
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if (type >= FF_ARRAY_ELEMS(stereo3d_type_names))
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return "unknown";
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return stereo3d_type_names[type];
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}
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int av_stereo3d_from_name(const char *name)
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{
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int i;
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for (i = 0; i < FF_ARRAY_ELEMS(stereo3d_type_names); i++) {
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if (av_strstart(name, stereo3d_type_names[i], NULL))
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return i;
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}
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return -1;
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}
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