1 | // Copyright (C) 2024 The Qt Company Ltd. |
---|---|
2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
3 | |
4 | #include "qffmpegioutils_p.h" |
5 | #include "qiodevice.h" |
6 | #include "qffmpegdefs_p.h" |
7 | |
8 | QT_BEGIN_NAMESPACE |
9 | |
10 | namespace QFFmpeg { |
11 | |
12 | int readQIODevice(void *opaque, uint8_t *buf, int buf_size) |
13 | { |
14 | auto *dev = static_cast<QIODevice *>(opaque); |
15 | Q_ASSERT(dev); |
16 | |
17 | if (dev->atEnd()) |
18 | return AVERROR_EOF; |
19 | return dev->read(data: reinterpret_cast<char *>(buf), maxlen: buf_size); |
20 | } |
21 | |
22 | int writeQIODevice(void *opaque, AvioWriteBufferType buf, int buf_size) |
23 | { |
24 | auto dev = static_cast<QIODevice *>(opaque); |
25 | Q_ASSERT(dev); |
26 | |
27 | return dev->write(data: reinterpret_cast<const char *>(buf), len: buf_size); |
28 | } |
29 | |
30 | int64_t seekQIODevice(void *opaque, int64_t offset, int whence) |
31 | { |
32 | QIODevice *dev = static_cast<QIODevice *>(opaque); |
33 | Q_ASSERT(dev); |
34 | |
35 | if (dev->isSequential()) |
36 | return AVERROR(EINVAL); |
37 | |
38 | if (whence & AVSEEK_SIZE) |
39 | return dev->size(); |
40 | |
41 | whence &= ~AVSEEK_FORCE; |
42 | |
43 | if (whence == SEEK_CUR) |
44 | offset += dev->pos(); |
45 | else if (whence == SEEK_END) |
46 | offset += dev->size(); |
47 | |
48 | if (!dev->seek(pos: offset)) |
49 | return AVERROR(EINVAL); |
50 | return offset; |
51 | } |
52 | |
53 | } // namespace QFFmpeg |
54 | |
55 | QT_END_NAMESPACE |
56 |