1 | // Copyright (C) 2016 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 | #ifndef QGSTAPPSRC_H |
5 | #define QGSTAPPSRC_H |
6 | |
7 | // |
8 | // W A R N I N G |
9 | // ------------- |
10 | // |
11 | // This file is not part of the Qt API. It exists purely as an |
12 | // implementation detail. This header file may change from version to |
13 | // version without notice, or even be removed. |
14 | // |
15 | // We mean it. |
16 | // |
17 | |
18 | #include <private/qtmultimediaglobal_p.h> |
19 | #include <private/qmultimediautils_p.h> |
20 | #include <qaudioformat.h> |
21 | |
22 | #include <QtCore/qobject.h> |
23 | #include <QtCore/qiodevice.h> |
24 | #include <QtCore/private/qringbuffer_p.h> |
25 | #include <QtCore/qatomic.h> |
26 | |
27 | #include <qgst_p.h> |
28 | #include <gst/app/gstappsrc.h> |
29 | |
30 | QT_BEGIN_NAMESPACE |
31 | |
32 | class QNetworkReply; |
33 | |
34 | class Q_MULTIMEDIA_EXPORT QGstAppSrc : public QObject |
35 | { |
36 | Q_OBJECT |
37 | public: |
38 | static QMaybe<QGstAppSrc *> create(QObject *parent = nullptr); |
39 | ~QGstAppSrc(); |
40 | |
41 | bool setup(QIODevice *stream = nullptr, qint64 offset = 0); |
42 | void setAudioFormat(const QAudioFormat &f); |
43 | |
44 | void setExternalAppSrc(const QGstElement &appsrc); |
45 | QGstElement element(); |
46 | |
47 | void write(const char *data, qsizetype size); |
48 | |
49 | bool canAcceptMoreData() { return m_noMoreData || m_dataRequestSize != 0; } |
50 | |
51 | void suspend() { m_suspended = true; } |
52 | void resume() { m_suspended = false; m_noMoreData = true; } |
53 | |
54 | Q_SIGNALS: |
55 | void bytesProcessed(int bytes); |
56 | void noMoreData(); |
57 | |
58 | private Q_SLOTS: |
59 | void pushData(); |
60 | bool doSeek(qint64); |
61 | void onDataReady(); |
62 | |
63 | void streamDestroyed(); |
64 | private: |
65 | QGstAppSrc(QGstElement appsrc, QObject *parent); |
66 | |
67 | bool setStream(QIODevice *, qint64 offset); |
68 | bool isStreamValid() const |
69 | { |
70 | return m_stream != nullptr && m_stream->isOpen(); |
71 | } |
72 | |
73 | static gboolean on_seek_data(GstAppSrc *element, guint64 arg0, gpointer userdata); |
74 | static void on_enough_data(GstAppSrc *element, gpointer userdata); |
75 | static void on_need_data(GstAppSrc *element, uint arg0, gpointer userdata); |
76 | |
77 | void sendEOS(); |
78 | void eosOrIdle(); |
79 | |
80 | QIODevice *m_stream = nullptr; |
81 | QNetworkReply *m_networkReply = nullptr; |
82 | QRingBuffer m_buffer; |
83 | QAudioFormat m_format; |
84 | |
85 | QGstElement m_appSrc; |
86 | bool m_sequential = true; |
87 | bool m_suspended = false; |
88 | bool m_noMoreData = false; |
89 | GstAppStreamType m_streamType = GST_APP_STREAM_TYPE_RANDOM_ACCESS; |
90 | qint64 m_offset = 0; |
91 | qint64 m_maxBytes = 0; |
92 | qint64 bytesReadSoFar = 0; |
93 | QAtomicInteger<unsigned int> m_dataRequestSize = 0; |
94 | int streamedSamples = 0; |
95 | }; |
96 | |
97 | QT_END_NAMESPACE |
98 | |
99 | #endif |
100 | |