44d94cc27e32672bb4c442063531bc82f2bcf4cb
[WebKit-https.git] / Source / WebCore / platform / mediastream / gstreamer / MockGStreamerVideoCaptureSource.cpp
1 /*
2  * Copyright (C) 2018 Metrological Group B.V.
3  * Author: Thibault Saunier <tsaunier@igalia.com>
4  * Author: Alejandro G. Castro <alex@igalia.com>
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Library General Public
8  * License as published by the Free Software Foundation; either
9  * version 2 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Library General Public License for more details.
15  *
16  * You should have received a copy of the GNU Library General Public License
17  * aint with this library; see the file COPYING.LIB.  If not, write to
18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19  * Boston, MA 02110-1301, USA.
20  */
21
22 #include "config.h"
23
24 #if ENABLE(MEDIA_STREAM) && USE(LIBWEBRTC) && USE(GSTREAMER)
25 #include "MockGStreamerVideoCaptureSource.h"
26
27 #include "MediaSampleGStreamer.h"
28 #include "MockRealtimeVideoSource.h"
29
30 #include <gst/app/gstappsrc.h>
31
32 namespace WebCore {
33
34 class WrappedMockRealtimeVideoSource : public MockRealtimeVideoSource {
35 public:
36     WrappedMockRealtimeVideoSource(const String& deviceID, const String& name)
37         : MockRealtimeVideoSource(deviceID, name)
38     {
39     }
40
41     void updateSampleBuffer()
42     {
43         auto imageBuffer = this->imageBuffer();
44         if (!imageBuffer)
45             return;
46
47         int fpsNumerator, fpsDenominator;
48         gst_util_double_to_fraction(frameRate(), &fpsNumerator, &fpsDenominator);
49         auto imageSize = imageBuffer->internalSize();
50         auto caps = adoptGRef(gst_caps_new_simple("video/x-raw",
51             "format", G_TYPE_STRING, "BGRA",
52             "width", G_TYPE_INT, imageSize.width(),
53             "height", G_TYPE_INT, imageSize.height(),
54             "framerate", GST_TYPE_FRACTION, fpsNumerator, fpsDenominator, nullptr));
55         auto data = imageBuffer->toBGRAData();
56         auto size = data.size();
57         auto buffer = adoptGRef(gst_buffer_new_wrapped(g_memdup(data.releaseBuffer().get(), size), size));
58         auto gstSample = adoptGRef(gst_sample_new(buffer.get(), caps.get(), nullptr, nullptr));
59
60         videoSampleAvailable(MediaSampleGStreamer::create(WTFMove(gstSample), FloatSize(), String()));
61     }
62 };
63
64 CaptureSourceOrError MockRealtimeVideoSource::create(const String& deviceID,
65     const String& name, const MediaConstraints* constraints)
66 {
67     auto source = adoptRef(*new MockGStreamerVideoCaptureSource(deviceID, name));
68
69     if (constraints && source->applyConstraints(*constraints))
70         return { };
71
72     return CaptureSourceOrError(WTFMove(source));
73 }
74
75 void MockGStreamerVideoCaptureSource::startProducingData()
76 {
77     GStreamerVideoCaptureSource::startProducingData();
78     m_wrappedSource->start();
79 }
80
81 void MockGStreamerVideoCaptureSource::stopProducingData()
82 {
83     m_wrappedSource->stop();
84
85     GStreamerVideoCaptureSource::stopProducingData();
86 }
87
88 void MockGStreamerVideoCaptureSource::videoSampleAvailable(MediaSample& sample)
89 {
90     auto src = capturer()->source();
91
92     if (src) {
93         auto gstsample = static_cast<MediaSampleGStreamer*>(&sample)->platformSample().sample.gstSample;
94         gst_app_src_push_sample(GST_APP_SRC(src), gstsample);
95     }
96 }
97
98 MockGStreamerVideoCaptureSource::MockGStreamerVideoCaptureSource(const String& deviceID, const String& name)
99     : GStreamerVideoCaptureSource(deviceID, name, "appsrc")
100     , m_wrappedSource(std::make_unique<WrappedMockRealtimeVideoSource>(deviceID, name))
101 {
102     m_wrappedSource->addObserver(*this);
103 }
104
105 MockGStreamerVideoCaptureSource::~MockGStreamerVideoCaptureSource()
106 {
107     m_wrappedSource->removeObserver(*this);
108 }
109
110 std::optional<std::pair<String, String>> MockGStreamerVideoCaptureSource::applyConstraints(const MediaConstraints& constraints)
111 {
112     m_wrappedSource->applyConstraints(constraints);
113     return GStreamerVideoCaptureSource::applyConstraints(constraints);
114 }
115
116 void MockGStreamerVideoCaptureSource::applyConstraints(const MediaConstraints& constraints, SuccessHandler&& successHandler, FailureHandler&& failureHandler)
117 {
118     m_wrappedSource->applyConstraints(constraints, WTFMove(successHandler), WTFMove(failureHandler));
119 }
120
121 const RealtimeMediaSourceSettings& MockGStreamerVideoCaptureSource::settings()
122 {
123     return m_wrappedSource->settings();
124 }
125
126 const RealtimeMediaSourceCapabilities& MockGStreamerVideoCaptureSource::capabilities()
127 {
128     m_capabilities = m_wrappedSource->capabilities();
129     m_currentSettings = m_wrappedSource->settings();
130     return m_capabilities.value();
131 }
132
133 void MockGStreamerVideoCaptureSource::captureFailed()
134 {
135     stop();
136
137     RealtimeMediaSource::captureFailed();
138 }
139
140 } // namespace WebCore
141
142 #endif // ENABLE(MEDIA_STREAM) && USE(LIBWEBRTC) && USE(GSTREAMER)