FFmpeg
libopus.c
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1 /*
2  * libopus encoder/decoder common code
3  * Copyright (c) 2012 Nicolas George
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include <opus_defines.h>
23 
24 #include "libavutil/common.h"
25 #include "libavutil/error.h"
26 #include "libopus.h"
27 
29 {
30  switch (err) {
31  case OPUS_BAD_ARG:
32  return AVERROR(EINVAL);
33  case OPUS_BUFFER_TOO_SMALL:
34  return AVERROR_UNKNOWN;
35  case OPUS_INTERNAL_ERROR:
36  return AVERROR(EFAULT);
37  case OPUS_INVALID_PACKET:
38  return AVERROR_INVALIDDATA;
39  case OPUS_UNIMPLEMENTED:
40  return AVERROR(ENOSYS);
41  case OPUS_INVALID_STATE:
42  return AVERROR_UNKNOWN;
43  case OPUS_ALLOC_FAIL:
44  return AVERROR(ENOMEM);
45  default:
46  return AVERROR(EINVAL);
47  }
48 }
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
int ff_opus_error_to_averror(int err)
Definition: libopus.c:28
error code definitions
common internal and external API header
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:71
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions