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downmix_info.c
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1 /*
2  * Copyright (c) 2014 Tim Walker <tdskywalker@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 "downmix_info.h"
22 #include "frame.h"
23 
25 {
26  AVFrameSideData *side_data;
27 
29 
30  if (!side_data)
32  sizeof(AVDownmixInfo));
33 
34  if (!side_data)
35  return NULL;
36 
37  return (AVDownmixInfo*)side_data->data;
38 }
audio downmix medatata
#define NULL
Definition: coverity.c:32
This structure describes decoded (raw) audio or video data.
Definition: frame.h:171
AVDownmixInfo * av_downmix_info_update_side_data(AVFrame *frame)
Get a frame's AV_FRAME_DATA_DOWNMIX_INFO side data for editing.
Definition: downmix_info.c:24
AVFrameSideData * av_frame_get_side_data(const AVFrame *frame, enum AVFrameSideDataType type)
Definition: frame.c:620
static AVFrame * frame
Structure to hold side data for an AVFrame.
Definition: frame.h:134
Metadata relevant to a downmix procedure.
Definition: frame.h:72
This structure describes optional metadata relevant to a downmix procedure.
Definition: downmix_info.h:58
reference-counted frame API
uint8_t * data
Definition: frame.h:136
AVFrameSideData * av_frame_new_side_data(AVFrame *frame, enum AVFrameSideDataType type, int size)
Add a new side data to a frame.
Definition: frame.c:584