1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
/*
* Copyright (C) 2023 Igalia S.L
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* aint with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#pragma once
#if USE(GSTREAMER)
#include "GRefPtrGStreamer.h"
#include <wtf/Deque.h>
#include <wtf/Forward.h>
#include <wtf/Lock.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/ThreadSafeRefCounted.h>
namespace WebCore {
class GStreamerElementHarness : public ThreadSafeRefCounted<GStreamerElementHarness> {
WTF_MAKE_TZONE_ALLOCATED(GStreamerElementHarness);
public:
class Stream : public ThreadSafeRefCounted<Stream> {
WTF_MAKE_TZONE_ALLOCATED(Stream);
public:
static Ref<Stream> create(GRefPtr<GstPad>&& pad, RefPtr<GStreamerElementHarness>&& downstreamHarness)
{
return adoptRef(*new Stream(WTFMove(pad), WTFMove(downstreamHarness)));
}
~Stream();
GRefPtr<GstSample> pullSample();
GRefPtr<GstEvent> pullEvent();
bool sendEvent(GstEvent*);
const GRefPtr<GstPad>& pad() const { return m_pad; }
const GRefPtr<GstPad>& targetPad() const { return m_targetPad; }
const GRefPtr<GstCaps>& outputCaps();
const RefPtr<GStreamerElementHarness> downstreamHarness() const { return m_downstreamHarness; }
private:
Stream(GRefPtr<GstPad>&&, RefPtr<GStreamerElementHarness>&&);
GstFlowReturn chainSample(GRefPtr<GstSample>&&);
bool sinkEvent(GRefPtr<GstEvent>&&);
GRefPtr<GstPad> m_pad;
RefPtr<GStreamerElementHarness> m_downstreamHarness;
GRefPtr<GstPad> m_targetPad;
Lock m_sampleQueueLock;
Deque<GRefPtr<GstSample>> m_sampleQueue WTF_GUARDED_BY_LOCK(m_sampleQueueLock);
Lock m_sinkEventQueueLock;
Deque<GRefPtr<GstEvent>> m_sinkEventQueue WTF_GUARDED_BY_LOCK(m_sinkEventQueueLock);
GRefPtr<GstCaps> m_outputCaps WTF_GUARDED_BY_LOCK(m_sinkEventQueueLock);
};
using PadLinkCallback = Function<RefPtr<GStreamerElementHarness>(const GRefPtr<GstPad>&)>;
using ProcessSampleCallback = Function<void(Stream&, GRefPtr<GstSample>&&)>;
static Ref<GStreamerElementHarness> create(GRefPtr<GstElement>&& element, ProcessSampleCallback&& processOutputSampleCallback, std::optional<PadLinkCallback> padLinkCallback = std::nullopt)
{
return adoptRef(*new GStreamerElementHarness(WTFMove(element), WTFMove(processOutputSampleCallback), WTFMove(padLinkCallback)));
}
~GStreamerElementHarness();
void start(GRefPtr<GstCaps>&&, std::optional<const GstSegment*>&& = { });
bool isStarted() const { return m_playing.loadRelaxed(); }
void reset();
bool pushSample(GRefPtr<GstSample>&&);
bool pushBuffer(GRefPtr<GstBuffer>&&);
bool pushEvent(GRefPtr<GstEvent>&&);
GstPad* inputPad() const { return m_srcPad.get(); }
const GRefPtr<GstCaps>& inputCaps() const { return m_inputCaps; }
const Vector<RefPtr<Stream>>& outputStreams() const { return m_outputStreams; }
GstElement* element() const { return m_element.get(); }
void processOutputSamples();
void flush();
bool flushBuffers();
void dumpGraph(ASCIILiteral filenamePrefix);
private:
GStreamerElementHarness(GRefPtr<GstElement>&&, ProcessSampleCallback&&, std::optional<PadLinkCallback>&&);
GstFlowReturn pushBufferFull(GRefPtr<GstBuffer>&&);
bool srcQuery(GstPad*, GstObject*, GstQuery*);
bool srcEvent(GRefPtr<GstEvent>&&);
void pushStickyEvents(GRefPtr<GstCaps>&&, std::optional<const GstSegment*>&& = { });
void pushSegmentEvent(std::optional<const GstSegment*>&& = { });
GRefPtr<GstElement> m_element;
ProcessSampleCallback m_processOutputSampleCallback;
std::optional<PadLinkCallback> m_padLinkCallback;
GRefPtr<GstCaps> m_inputCaps;
GRefPtr<GstPad> m_srcPad;
Vector<RefPtr<Stream>> m_outputStreams;
Lock m_srcEventQueueLock;
Deque<GRefPtr<GstEvent>> m_srcEventQueue WTF_GUARDED_BY_LOCK(m_srcEventQueueLock);
Atomic<bool> m_playing { false };
Atomic<bool> m_capsEventSent { false };
Atomic<bool> m_segmentEventSent { false };
};
} // namespace WebCore
#endif // USE(GSTREAMER)
|
