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39 | |
40 | #include "qgstreameraudioprobecontrol_p.h" |
41 | #include <private/qgstutils_p.h> |
42 | |
43 | QGstreamerAudioProbeControl::QGstreamerAudioProbeControl(QObject *parent) |
44 | : QMediaAudioProbeControl(parent) |
45 | { |
46 | } |
47 | |
48 | QGstreamerAudioProbeControl::~QGstreamerAudioProbeControl() |
49 | { |
50 | } |
51 | |
52 | void QGstreamerAudioProbeControl::probeCaps(GstCaps *caps) |
53 | { |
54 | QAudioFormat format = QGstUtils::audioFormatForCaps(caps); |
55 | |
56 | QMutexLocker locker(&m_bufferMutex); |
57 | m_format = format; |
58 | } |
59 | |
60 | bool QGstreamerAudioProbeControl::probeBuffer(GstBuffer *buffer) |
61 | { |
62 | qint64 position = GST_BUFFER_TIMESTAMP(buffer); |
63 | position = position >= 0 |
64 | ? position / G_GINT64_CONSTANT(1000) // microseconds |
65 | : -1; |
66 | |
67 | QByteArray data; |
68 | #if GST_CHECK_VERSION(1,0,0) |
69 | GstMapInfo info; |
70 | if (gst_buffer_map(buffer, info: &info, flags: GST_MAP_READ)) { |
71 | data = QByteArray(reinterpret_cast<const char *>(info.data), info.size); |
72 | gst_buffer_unmap(buffer, info: &info); |
73 | } else { |
74 | return true; |
75 | } |
76 | #else |
77 | data = QByteArray(reinterpret_cast<const char *>(buffer->data), buffer->size); |
78 | #endif |
79 | |
80 | QMutexLocker locker(&m_bufferMutex); |
81 | if (m_format.isValid()) { |
82 | if (!m_pendingBuffer.isValid()) |
83 | QMetaObject::invokeMethod(obj: this, member: "bufferProbed" , type: Qt::QueuedConnection); |
84 | m_pendingBuffer = QAudioBuffer(data, m_format, position); |
85 | } |
86 | |
87 | return true; |
88 | } |
89 | |
90 | void QGstreamerAudioProbeControl::bufferProbed() |
91 | { |
92 | QAudioBuffer audioBuffer; |
93 | { |
94 | QMutexLocker locker(&m_bufferMutex); |
95 | if (!m_pendingBuffer.isValid()) |
96 | return; |
97 | audioBuffer = m_pendingBuffer; |
98 | m_pendingBuffer = QAudioBuffer(); |
99 | } |
100 | emit audioBufferProbed(buffer: audioBuffer); |
101 | } |
102 | |