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qffmpegmediaintegration.cpp
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1// Copyright (C) 2021 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#include <QtFFmpegMediaPluginImpl/private/qffmpegmediaintegration_p.h>
5
6#include <QtFFmpegMediaPluginImpl/private/qffmpegaudiodecoder_p.h>
7#include <QtFFmpegMediaPluginImpl/private/qffmpegaudioinput_p.h>
8#include <QtFFmpegMediaPluginImpl/private/qffmpegconverter_p.h>
9#include <QtFFmpegMediaPluginImpl/private/qffmpegimagecapture_p.h>
10#include <QtFFmpegMediaPluginImpl/private/qffmpegmediacapturesession_p.h>
11#include <QtFFmpegMediaPluginImpl/private/qffmpegmediaformatinfo_p.h>
12#include <QtFFmpegMediaPluginImpl/private/qffmpegmediaplayer_p.h>
13#include <QtFFmpegMediaPluginImpl/private/qffmpegmediarecorder_p.h>
14#include <QtFFmpegMediaPluginImpl/private/qffmpegresampler_p.h>
15#include <QtFFmpegMediaPluginImpl/private/qffmpegvideosink_p.h>
16#include <QtFFmpegMediaPluginImpl/private/qgrabwindowsurfacecapture_p.h>
17
18#include <QtMultimedia/private/qplatformmediaplugin_p.h>
19#include <QtMultimedia/qcameradevice.h>
20
21#ifdef Q_OS_DARWIN
22#include <QtFFmpegMediaPluginImpl/private/qffmpegdarwinintegrationfactory_p.h>
23#include <QtMultimedia/private/qdarwinintegrationfactory_p.h>
24#endif
25
26#ifdef Q_OS_WINDOWS
27# include <QtMultimedia/private/qwindowsresampler_p.h>
28# include <QtMultimedia/private/qwindowsvideodevices_p.h>
29# include "qwindowscamera_p.h"
30# include "qffmpegscreencapture_dxgi_p.h"
31# include "qwincapturablewindows_p.h"
32# include "qgdiwindowcapture_p.h"
33#endif
34
35#ifdef Q_OS_ANDROID
36#include <QtFFmpegMediaPluginImpl/private/qandroidcamera_p.h>
37#include <QtFFmpegMediaPluginImpl/private/qandroidimagecapture_p.h>
38#include <QtFFmpegMediaPluginImpl/private/qandroidscreencapture_p.h>
39#include <QtFFmpegMediaPluginImpl/private/qandroidvideodevices_p.h>
40#include <jni.h>
41extern "C" {
42# include <libavutil/log.h>
43# include <libavcodec/jni.h>
44}
45#endif
46
47#if QT_CONFIG(linux_v4l)
48#include "qv4l2camera_p.h"
49#include "qv4l2cameradevices_p.h"
50#endif
51
52#if QT_CONFIG(cpp_winrt)
53#include "qffmpegwindowcapture_uwp_p.h"
54#endif
55
56#if QT_CONFIG(xlib)
57#include "qx11surfacecapture_p.h"
58#include "qx11capturablewindows_p.h"
59#endif
60
61#if QT_CONFIG(pipewire_screencapture)
62# include <QtMultimedia/private/qpipewire_screencapture_p.h>
63#endif
64
65#if QT_CONFIG(eglfs)
66#include "qeglfsscreencapture_p.h"
67#endif
68
69#include <QtCore/qloggingcategory.h>
70
71QT_BEGIN_NAMESPACE
72
73Q_STATIC_LOGGING_CATEGORY(qLcFFmpeg, "qt.multimedia.ffmpeg");
74
75bool thread_local FFmpegLogsEnabledInThread = true;
76static bool UseCustomFFmpegLogger = false;
77
78static void qffmpegLogCallback(void *ptr, int level, const char *fmt, va_list vl)
79{
80 if (!FFmpegLogsEnabledInThread)
81 return;
82
83 if (!UseCustomFFmpegLogger)
84 return av_log_default_callback(ptr, level, fmt, vl);
85
86 // filter logs above the chosen level and AV_LOG_QUIET (negative level)
87 if (level < 0 || level > av_log_get_level())
88 return;
89
90 QString message = QStringLiteral("FFmpeg log: %1").arg(QString::vasprintf(fmt, vl));
91 if (message.endsWith(u"\n"))
92 message.removeLast();
93
94 if (level == AV_LOG_DEBUG || level == AV_LOG_TRACE)
95 qDebug() << message;
96 else if (level == AV_LOG_VERBOSE || level == AV_LOG_INFO)
97 qInfo() << message;
98 else if (level == AV_LOG_WARNING)
99 qWarning() << message;
100 else if (level == AV_LOG_ERROR || level == AV_LOG_FATAL || level == AV_LOG_PANIC)
101 qCritical() << message;
102}
103
104static void setupFFmpegLogger()
105{
106 if (qEnvironmentVariableIsSet("QT_FFMPEG_DEBUG")) {
107 av_log_set_level(AV_LOG_DEBUG);
108 UseCustomFFmpegLogger = true;
109 }
110
111 av_log_set_callback(&qffmpegLogCallback);
112}
113
114static QPlatformSurfaceCapture *createScreenCaptureByBackend(const QString& backend)
115{
116 if (backend == u"grabwindow")
117 return new QGrabWindowSurfaceCapture(QPlatformSurfaceCapture::ScreenSource{});
118
119#if QT_CONFIG(eglfs)
120 if (backend == u"eglfs")
121 return new QEglfsScreenCapture;
122#endif
123
124#if QT_CONFIG(pipewire_screencapture)
125 if (backend == u"pipewire") {
126 if (auto capture = QtPipeWire::QPipeWireCapture::create())
127 return capture.release();
128 }
129#endif
130
131#if QT_CONFIG(xlib)
132 if (backend == u"x11")
133 return new QX11SurfaceCapture(QPlatformSurfaceCapture::ScreenSource{});
134#elif defined(Q_OS_WINDOWS)
135 if (backend == u"dxgi")
136 return new QFFmpegScreenCaptureDxgi;
137#elif defined(Q_OS_MACOS)
138 if (backend == u"avf")
139 return QFFmpeg::makeQSckScreenCapture().release();
140#endif
141 return nullptr;
142}
143
144static QPlatformSurfaceCapture *createWindowCaptureByBackend(const QString& backend)
145{
146 if (backend == u"grabwindow")
147 return new QGrabWindowSurfaceCapture(QPlatformSurfaceCapture::WindowSource{});
148
149#if QT_CONFIG(xlib)
150 if (backend == u"x11")
151 return new QX11SurfaceCapture(QPlatformSurfaceCapture::WindowSource{});
152#elif defined(Q_OS_WINDOWS)
153 if (backend == u"gdi")
154 return new QGdiWindowCapture;
155#if QT_CONFIG(cpp_winrt)
156 if (backend == u"uwp")
157 return new QFFmpegWindowCaptureUwp;
158#endif
159#elif defined(Q_OS_MACOS)
160 if (backend == u"cg")
161 return QFFmpeg::makeQSckWindowCapture().release();
162#endif
163 return nullptr;
164}
165
166QFFmpegMediaIntegration::QFFmpegMediaIntegration()
167 : QPlatformMediaIntegration(QLatin1String("ffmpeg"))
168{
169 setupFFmpegLogger();
170
171 qCInfo(qLcFFmpeg) << "Using Qt multimedia with FFmpeg version" << av_version_info()
172 << avutil_license();
173
174 qCDebug(qLcFFmpeg) << "Available HW decoding frameworks:";
175 for (auto type : QFFmpeg::HWAccel::decodingDeviceTypes())
176 qCDebug(qLcFFmpeg) << " " << type;
177
178 qCDebug(qLcFFmpeg) << "Available HW encoding frameworks:";
179 for (auto type : QFFmpeg::HWAccel::encodingDeviceTypes())
180 qCDebug(qLcFFmpeg) << " " << type;
181}
182
183q23::expected<QPlatformAudioDecoder *, QString>
184QFFmpegMediaIntegration::createAudioDecoder(QAudioDecoder *decoder)
185{
186 return new QFFmpegAudioDecoder(decoder);
187}
188
189q23::expected<std::unique_ptr<QPlatformAudioResampler>, QString>
190QFFmpegMediaIntegration::createAudioResampler(const QAudioFormat &inputFormat,
191 const QAudioFormat &outputFormat)
192{
193 auto ffmpegResampler = QFFmpegResampler::createFromInputFormat(inputFormat, outputFormat);
194 if (ffmpegResampler)
195 return ffmpegResampler;
196
197#ifdef Q_OS_WINDOWS
198 auto windowsResampler = std::make_unique<QWindowsResampler>();
199 if (windowsResampler->setup(inputFormat, outputFormat))
200 return windowsResampler;
201#endif
202
203 return q23::unexpected{ notAvailable };
204}
205
206q23::expected<QPlatformMediaCaptureSession *, QString>
207QFFmpegMediaIntegration::createCaptureSession()
208{
209 return new QFFmpegMediaCaptureSession();
210}
211
212q23::expected<QPlatformMediaPlayer *, QString>
213QFFmpegMediaIntegration::createPlayer(QMediaPlayer *player)
214{
215 return new QFFmpegMediaPlayer(player);
216}
217
218q23::expected<QPlatformCamera *, QString> QFFmpegMediaIntegration::createCamera(QCamera *camera)
219{
220 Q_ASSERT(camera);
221#ifdef Q_OS_DARWIN
222 return QFFmpeg::makeQAvfCamera(*camera).release();
223#elif defined(Q_OS_ANDROID)
224 return new QFFmpeg::QAndroidCamera(camera);
225#elif QT_CONFIG(linux_v4l)
226 return new QV4L2Camera(camera);
227#elif defined(Q_OS_WINDOWS)
228 return new QFFmpeg::QWindowsCamera(camera);
229#else
230 Q_UNUSED(camera);
231 return q23::unexpected{ notAvailable };
232#endif
233}
234
235QPlatformSurfaceCapture *QFFmpegMediaIntegration::createScreenCapture(QScreenCapture *)
236{
237 static const QString screenCaptureBackend =
238 QString::fromLocal8Bit(qgetenv("QT_SCREEN_CAPTURE_BACKEND")).toLower();
239
240 if (!screenCaptureBackend.isEmpty()) {
241 if (auto screenCapture = createScreenCaptureByBackend(screenCaptureBackend))
242 return screenCapture;
243
244 qWarning() << "Not supported QT_SCREEN_CAPTURE_BACKEND:" << screenCaptureBackend;
245 }
246
247#if QT_CONFIG(xlib)
248 if (QX11SurfaceCapture::isSupported())
249 return new QX11SurfaceCapture(QPlatformSurfaceCapture::ScreenSource{});
250#endif
251
252#if QT_CONFIG(pipewire_screencapture)
253 if (auto capture = QtPipeWire::QPipeWireCapture::create())
254 return capture.release();
255#endif
256
257#if QT_CONFIG(eglfs)
258 if (QEglfsScreenCapture::isSupported())
259 return new QEglfsScreenCapture;
260#endif
261
262#if defined(Q_OS_WINDOWS)
263 return new QFFmpegScreenCaptureDxgi;
264#elif defined(Q_OS_MACOS) // TODO: probably use it for iOS as well
265 return QFFmpeg::makeQSckScreenCapture().release();
266#elif defined(Q_OS_ANDROID)
267 return new QAndroidScreenCapture;
268#else
269 return new QGrabWindowSurfaceCapture(QPlatformSurfaceCapture::ScreenSource{});
270#endif
271}
272
273QPlatformSurfaceCapture *QFFmpegMediaIntegration::createWindowCapture(QWindowCapture *)
274{
275 static const QString windowCaptureBackend =
276 QString::fromLocal8Bit(qgetenv("QT_WINDOW_CAPTURE_BACKEND")).toLower();
277
278 if (!windowCaptureBackend.isEmpty()) {
279 if (auto windowCapture = createWindowCaptureByBackend(windowCaptureBackend))
280 return windowCapture;
281
282 qWarning() << "Not supported QT_WINDOW_CAPTURE_BACKEND:" << windowCaptureBackend;
283 }
284
285#if QT_CONFIG(xlib)
286 if (QX11SurfaceCapture::isSupported())
287 return new QX11SurfaceCapture(QPlatformSurfaceCapture::WindowSource{});
288#endif
289
290#if defined(Q_OS_WINDOWS)
291# if QT_CONFIG(cpp_winrt)
292 if (QFFmpegWindowCaptureUwp::isSupported())
293 return new QFFmpegWindowCaptureUwp;
294# endif
295
296 return new QGdiWindowCapture;
297#elif defined(Q_OS_MACOS)
298 return QFFmpeg::makeQSckWindowCapture().release();
299#else
300 return new QGrabWindowSurfaceCapture(QPlatformSurfaceCapture::WindowSource{});
301#endif
302}
303
304q23::expected<QPlatformMediaRecorder *, QString>
305QFFmpegMediaIntegration::createRecorder(QMediaRecorder *recorder)
306{
307 return new QFFmpegMediaRecorder(recorder);
308}
309
310q23::expected<QPlatformImageCapture *, QString>
311QFFmpegMediaIntegration::createImageCapture(QImageCapture *imageCapture)
312{
313 Q_ASSERT(imageCapture);
314#if defined(Q_OS_ANDROID)
315 return new QFFmpeg::QAndroidImageCapture(imageCapture);
316#elif defined(Q_OS_DARWIN)
317 return QFFmpeg::makeQAvfImageCapture(*imageCapture).release();
318#else
319 return new QFFmpegImageCapture(imageCapture);
320#endif
321}
322
323q23::expected<QPlatformVideoSink *, QString>
324QFFmpegMediaIntegration::createVideoSink(QVideoSink *sink)
325{
326 return new QFFmpegVideoSink(sink);
327}
328
329q23::expected<QPlatformAudioInput *, QString>
330QFFmpegMediaIntegration::createAudioInput(QAudioInput *input)
331{
332 return new QFFmpegAudioInput(input);
333}
334
335QVideoFrame QFFmpegMediaIntegration::convertVideoFrame(QVideoFrame &srcFrame,
336 const QVideoFrameFormat &destFormat)
337{
338 return convertFrame(srcFrame, destFormat);
339}
340
341QPlatformMediaFormatInfo *QFFmpegMediaIntegration::createFormatInfo()
342{
343 return new QFFmpegMediaFormatInfo;
344}
345
346QPlatformVideoDevices *QFFmpegMediaIntegration::createVideoDevices()
347{
348#if defined(Q_OS_ANDROID)
349 return new QFFmpeg::QAndroidVideoDevices(this);
350#elif QT_CONFIG(linux_v4l)
351 return new QV4L2CameraDevices(this);
352#elif defined Q_OS_DARWIN
353 return makeQAvfVideoDevices(
354 *this,
355 &QFFmpeg::isCVFormatSupported).release();
356#elif defined(Q_OS_WINDOWS)
357 return new QWindowsVideoDevices(this);
358#else
359 return nullptr;
360#endif
361}
362
363QPlatformCapturableWindows *QFFmpegMediaIntegration::createCapturableWindows()
364{
365#if QT_CONFIG(xlib)
366 if (QX11SurfaceCapture::isSupported())
367 return new QX11CapturableWindows;
368#elif defined Q_OS_MACOS
369 return QFFmpeg::makeQSckCapturableWindows().release();
370#elif defined(Q_OS_WINDOWS)
371 return new QWinCapturableWindows;
372#endif
373 return nullptr;
374}
375
376QT_END_NAMESPACE
377
378#ifdef Q_OS_ANDROID
379
380extern "C" Q_DECL_EXPORT jint JNICALL JNI_OnLoad(JavaVM *vm, void * /*reserved*/)
381{
382 static bool initialized = false;
383 if (initialized)
384 return JNI_VERSION_1_6;
385 initialized = true;
386
387 void *environment;
388 if (vm->GetEnv(&environment, JNI_VERSION_1_6))
389 return JNI_ERR;
390
391 // setting our javavm into ffmpeg.
392 if (av_jni_set_java_vm(vm, nullptr))
393 return JNI_ERR;
394
395 if (!QFFmpeg::QAndroidCamera::registerNativeMethods()
396 || !QAndroidScreenCapture::registerNativeMethods()
397 || !QFFmpeg::QAndroidVideoDevices::registerNativeMethods()) {
398 return JNI_ERR;
399 }
400
401 return JNI_VERSION_1_6;
402}
403#endif
createWindowCaptureByBackend
static QPlatformSurfaceCapture * createWindowCaptureByBackend(const QString &backend)
Definition qffmpegmediaintegration.cpp:144
FFmpegLogsEnabledInThread
bool FFmpegLogsEnabledInThread
Definition qffmpegmediaintegration.cpp:75
createScreenCaptureByBackend
static QPlatformSurfaceCapture * createScreenCaptureByBackend(const QString &backend)
Definition qffmpegmediaintegration.cpp:114
UseCustomFFmpegLogger
static bool UseCustomFFmpegLogger
Definition qffmpegmediaintegration.cpp:76
qffmpegLogCallback
static void qffmpegLogCallback(void *ptr, int level, const char *fmt, va_list vl)
Definition qffmpegmediaintegration.cpp:78
setupFFmpegLogger
static void setupFFmpegLogger()
Definition qffmpegmediaintegration.cpp:104
Q_STATIC_LOGGING_CATEGORY
QT_BEGIN_NAMESPACE Q_STATIC_LOGGING_CATEGORY(lcSynthesizedIterableAccess, "qt.iterable.synthesized", QtWarningMsg)