| 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 |