1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
/*
* Copyright (C) 2003-2014 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/* necessary because libavutil/common.h uses UINT64_C */
#define __STDC_CONSTANT_MACROS
#include "config.h"
#include "FfmpegIo.hxx"
#include "../DecoderAPI.hxx"
#include "input/InputStream.hxx"
#include "util/Error.hxx"
AvioStream::~AvioStream()
{
av_free(io);
}
inline int
AvioStream::Read(void *dest, int size)
{
return decoder_read(decoder, input, dest, size);
}
inline int64_t
AvioStream::Seek(int64_t pos, int whence)
{
switch (whence) {
case SEEK_SET:
break;
case SEEK_CUR:
pos += input.GetOffset();
break;
case SEEK_END:
if (!input.KnownSize())
return -1;
pos += input.GetSize();
break;
case AVSEEK_SIZE:
if (!input.KnownSize())
return -1;
return input.GetSize();
default:
return -1;
}
if (!input.LockSeek(pos, IgnoreError()))
return -1;
return input.GetOffset();
}
int
AvioStream::_Read(void *opaque, uint8_t *buf, int size)
{
AvioStream &stream = *(AvioStream *)opaque;
return stream.Read(buf, size);
}
int64_t
AvioStream::_Seek(void *opaque, int64_t pos, int whence)
{
AvioStream &stream = *(AvioStream *)opaque;
return stream.Seek(pos, whence);
}
bool
AvioStream::Open()
{
io = avio_alloc_context(buffer, sizeof(buffer),
false, this,
_Read, nullptr,
input.IsSeekable() ? _Seek : nullptr);
return io != nullptr;
}
|
