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39
40#ifndef QAUDIOBUFFER_P_H
41#define QAUDIOBUFFER_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <qtmultimediaglobal.h>
55#include <qmultimedia.h>
56
57#include "qaudioformat.h"
58
59QT_BEGIN_NAMESPACE
60
61// Required for QDoc workaround
62class QString;
63
64class Q_MULTIMEDIA_EXPORT QAbstractAudioBuffer {
65public:
66 virtual ~QAbstractAudioBuffer() {}
67
68 // Lifetime management
69 virtual void release() = 0;
70
71 // Format related
72 virtual QAudioFormat format() const = 0;
73 virtual qint64 startTime() const = 0;
74 virtual int frameCount() const = 0;
75
76 // R/O Data
77 virtual void *constData() const = 0;
78
79 // For writable data we do this:
80 // If we only have one reference to the provider,
81 // call writableData(). If that does not return 0,
82 // then we're finished. If it does return 0, then we call
83 // writableClone() to get a new buffer and then release
84 // the old clone if that succeeds. If it fails, we create
85 // a memory clone from the constData and release the old buffer.
86 // If writableClone() succeeds, we then call writableData() on it
87 // and that should be good.
88
89 virtual void *writableData() = 0;
90 virtual QAbstractAudioBuffer *clone() const = 0;
91};
92
93
94QT_END_NAMESPACE
95
96#endif // QAUDIOBUFFER_P_H
97

source code of qtmultimedia/src/multimedia/audio/qaudiobuffer_p.h