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

source code of qtmultimedia/src/plugins/multimedia/ffmpeg/qffmpegmediaintegration.cpp