src/platform/qt/VideoView.cpp (view raw)
1/* Copyright (c) 2013-2014 Jeffrey Pfau
2 *
3 * This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6#include "VideoView.h"
7
8#ifdef USE_FFMPEG
9
10#include "GBAApp.h"
11#include "LogController.h"
12
13#include <QMap>
14
15using namespace QGBA;
16
17QMap<QString, QString> VideoView::s_acodecMap;
18QMap<QString, QString> VideoView::s_vcodecMap;
19QMap<QString, QString> VideoView::s_containerMap;
20
21bool VideoView::Preset::compatible(const Preset& other) const {
22 if (!other.container.isNull() && !container.isNull() && other.container != container) {
23 return false;
24 }
25 if (!other.acodec.isNull() && !acodec.isNull() && other.acodec != acodec) {
26 return false;
27 }
28 if (!other.vcodec.isNull() && !vcodec.isNull() && other.vcodec != vcodec) {
29 return false;
30 }
31 if (other.abr && abr && other.abr != abr) {
32 return false;
33 }
34 if (other.vbr && vbr && other.vbr != vbr) {
35 return false;
36 }
37 if (other.dims.width() && dims.width() && other.dims.width() != dims.width()) {
38 return false;
39 }
40 if (other.dims.height() && dims.height() && other.dims.height() != dims.height()) {
41 return false;
42 }
43 return true;
44}
45
46VideoView::VideoView(QWidget* parent)
47 : QWidget(parent)
48{
49 m_ui.setupUi(this);
50
51 if (s_acodecMap.empty()) {
52 s_acodecMap["mp3"] = "libmp3lame";
53 s_acodecMap["opus"] = "libopus";
54 s_acodecMap["vorbis"] = "libvorbis";
55 s_acodecMap["uncompressed"] = "pcm_s16le";
56 }
57 if (s_vcodecMap.empty()) {
58 s_vcodecMap["dirac"] = "libschroedinger";
59 s_vcodecMap["h264"] = "libx264";
60 s_vcodecMap["h264 nvenc"] = "h264_nvenc";
61 s_vcodecMap["hevc"] = "libx265";
62 s_vcodecMap["hevc nvenc"] = "hevc_nvenc";
63 s_vcodecMap["theora"] = "libtheora";
64 s_vcodecMap["vp8"] = "libvpx";
65 s_vcodecMap["vp9"] = "libvpx-vp9";
66 s_vcodecMap["xvid"] = "libxvid";
67 }
68 if (s_containerMap.empty()) {
69 s_containerMap["mkv"] = "matroska";
70 }
71
72 connect(m_ui.buttonBox, &QDialogButtonBox::rejected, this, &VideoView::close);
73 connect(m_ui.start, &QAbstractButton::clicked, this, &VideoView::startRecording);
74 connect(m_ui.stop, &QAbstractButton::clicked, this, &VideoView::stopRecording);
75
76 connect(m_ui.selectFile, &QAbstractButton::clicked, this, &VideoView::selectFile);
77 connect(m_ui.filename, &QLineEdit::textChanged, this, &VideoView::setFilename);
78
79 connect(m_ui.audio, SIGNAL(activated(const QString&)), this, SLOT(setAudioCodec(const QString&)));
80 connect(m_ui.video, SIGNAL(activated(const QString&)), this, SLOT(setVideoCodec(const QString&)));
81 connect(m_ui.container, SIGNAL(activated(const QString&)), this, SLOT(setContainer(const QString&)));
82 connect(m_ui.audio, SIGNAL(editTextChanged(const QString&)), this, SLOT(setAudioCodec(const QString&)));
83 connect(m_ui.video, SIGNAL(editTextChanged(const QString&)), this, SLOT(setVideoCodec(const QString&)));
84 connect(m_ui.container, SIGNAL(editTextChanged(const QString&)), this, SLOT(setContainer(const QString&)));
85
86 connect(m_ui.abr, SIGNAL(valueChanged(int)), this, SLOT(setAudioBitrate(int)));
87 connect(m_ui.vbr, SIGNAL(valueChanged(int)), this, SLOT(setVideoBitrate(int)));
88
89 connect(m_ui.width, SIGNAL(valueChanged(int)), this, SLOT(setWidth(int)));
90 connect(m_ui.height, SIGNAL(valueChanged(int)), this, SLOT(setHeight(int)));
91
92 connect(m_ui.wratio, SIGNAL(valueChanged(int)), this, SLOT(setAspectWidth(int)));
93 connect(m_ui.hratio, SIGNAL(valueChanged(int)), this, SLOT(setAspectHeight(int)));
94
95 connect(m_ui.showAdvanced, &QAbstractButton::clicked, this, &VideoView::showAdvanced);
96
97 FFmpegEncoderInit(&m_encoder);
98
99 updatePresets();
100
101 setPreset({
102 .container = "MKV",
103 .vcodec = "h.264",
104 .acodec = "FLAC",
105 .vbr = -1,
106 .abr = 0,
107 .dims = QSize(),
108 });
109 showAdvanced(false);
110}
111
112void VideoView::updatePresets() {
113 m_presets.clear();
114
115 addPreset(m_ui.preset1080, {
116 .container = QString(),
117 .vcodec = QString(),
118 .acodec = QString(),
119 .vbr = 0,
120 .abr = 0,
121 .dims = maintainAspect(QSize(1920, 1080))
122 });
123
124 addPreset(m_ui.preset720, {
125 .container = QString(),
126 .vcodec = QString(),
127 .acodec = QString(),
128 .vbr = 0,
129 .abr = 0,
130 .dims = maintainAspect(QSize(1280, 720))
131 });
132
133 addPreset(m_ui.preset480, {
134 .container = QString(),
135 .vcodec = QString(),
136 .acodec = QString(),
137 .vbr = 0,
138 .abr = 0,
139 .dims = maintainAspect(QSize(720, 480))
140 });
141
142 if (m_nativeWidth && m_nativeHeight) {
143 addPreset(m_ui.presetNative, {
144 .container = QString(),
145 .vcodec = QString(),
146 .acodec = QString(),
147 .vbr = 0,
148 .abr = 0,
149 .dims = QSize(m_nativeWidth, m_nativeHeight)
150 });
151 m_ui.presetNative->setEnabled(true);
152 }
153
154 addPreset(m_ui.presetHQ, {
155 .container = "MP4",
156 .vcodec = "h.264",
157 .acodec = "AAC",
158 .vbr = 8000,
159 .abr = 384,
160 .dims = maintainAspect(QSize(1920, 1080))
161 });
162
163 addPreset(m_ui.presetYoutube, {
164 .container = "MP4",
165 .vcodec = "h.264",
166 .acodec = "AAC",
167 .vbr = 5000,
168 .abr = 256,
169 .dims = maintainAspect(QSize(1280, 720))
170 });
171
172 addPreset(m_ui.presetWebM, {
173 .container = "WebM",
174 .vcodec = "VP9",
175 .acodec = "Opus",
176 .vbr = 800,
177 .abr = 128
178 });
179
180 if (m_nativeWidth && m_nativeHeight) {
181 addPreset(m_ui.presetLossless, {
182 .container = "MKV",
183 .vcodec = "h.264",
184 .acodec = "FLAC",
185 .vbr = -1,
186 .abr = 0,
187 .dims = QSize(m_nativeWidth, m_nativeHeight)
188 });
189 }
190}
191
192VideoView::~VideoView() {
193 stopRecording();
194 free(m_audioCodecCstr);
195 free(m_videoCodecCstr);
196 free(m_containerCstr);
197}
198
199void VideoView::setController(std::shared_ptr<CoreController> controller) {
200 CoreController* controllerPtr = controller.get();
201 connect(controllerPtr, &CoreController::frameAvailable, this, [this, controllerPtr]() {
202 setNativeResolution(controllerPtr->screenDimensions());
203 });
204 connect(controllerPtr, &CoreController::stopping, this, &VideoView::stopRecording);
205 connect(this, &VideoView::recordingStarted, controllerPtr, &CoreController::setAVStream);
206 connect(this, &VideoView::recordingStopped, controllerPtr, &CoreController::clearAVStream, Qt::DirectConnection);
207
208 setNativeResolution(controllerPtr->screenDimensions());
209}
210
211void VideoView::startRecording() {
212 if (!validateSettings()) {
213 return;
214 }
215 if (!FFmpegEncoderOpen(&m_encoder, m_filename.toUtf8().constData())) {
216 LOG(QT, ERROR) << tr("Failed to open output video file: %1").arg(m_filename);
217 return;
218 }
219 m_ui.start->setEnabled(false);
220 m_ui.stop->setEnabled(true);
221 emit recordingStarted(&m_encoder.d);
222}
223
224void VideoView::stopRecording() {
225 emit recordingStopped();
226 FFmpegEncoderClose(&m_encoder);
227 m_ui.stop->setEnabled(false);
228 validateSettings();
229}
230
231void VideoView::setNativeResolution(const QSize& dims) {
232 if (dims.width() == m_nativeWidth && dims.height() == m_nativeHeight) {
233 return;
234 }
235 m_nativeWidth = dims.width();
236 m_nativeHeight = dims.height();
237 m_ui.presetNative->setText(tr("Native (%0x%1)").arg(m_nativeWidth).arg(m_nativeHeight));
238 QSize newSize = maintainAspect(QSize(m_width, m_height));
239 m_width = newSize.width();
240 m_height = newSize.height();
241 updateAspectRatio(m_nativeWidth, m_nativeHeight, false);
242 updatePresets();
243 for (auto iterator = m_presets.constBegin(); iterator != m_presets.constEnd(); ++iterator) {
244 if (iterator.key()->isChecked()) {
245 setPreset(*iterator);
246 break;
247 }
248 }
249}
250
251void VideoView::setNativeFrameRate(const QPair<unsigned, unsigned>& ratio) {
252 FFmpegEncoderSetInputFrameRate(&m_encoder, ratio.first, ratio.second);
253}
254
255void VideoView::selectFile() {
256 QString filename = GBAApp::app()->getSaveFileName(this, tr("Select output file"));
257 if (!filename.isEmpty()) {
258 m_ui.filename->setText(filename);
259 }
260}
261
262void VideoView::setFilename(const QString& fname) {
263 m_filename = fname;
264 validateSettings();
265}
266
267void VideoView::setAudioCodec(const QString& codec, bool manual) {
268 free(m_audioCodecCstr);
269 m_audioCodec = sanitizeCodec(codec, s_acodecMap);
270 if (m_audioCodec == "none") {
271 m_audioCodecCstr = nullptr;
272 } else {
273 m_audioCodecCstr = strdup(m_audioCodec.toUtf8().constData());
274 }
275 if (!FFmpegEncoderSetAudio(&m_encoder, m_audioCodecCstr, m_abr)) {
276 free(m_audioCodecCstr);
277 m_audioCodecCstr = nullptr;
278 m_audioCodec = QString();
279 }
280 validateSettings();
281 if (manual) {
282 uncheckIncompatible();
283 }
284}
285
286void VideoView::setVideoCodec(const QString& codec, bool manual) {
287 free(m_videoCodecCstr);
288 m_videoCodec = sanitizeCodec(codec, s_vcodecMap);
289 if (m_videoCodec == "none") {
290 m_videoCodecCstr = nullptr;
291 } else {
292 m_videoCodecCstr = strdup(m_videoCodec.toUtf8().constData());
293 }
294 if (!FFmpegEncoderSetVideo(&m_encoder, m_videoCodecCstr, m_vbr, 0)) {
295 free(m_videoCodecCstr);
296 m_videoCodecCstr = nullptr;
297 m_videoCodec = QString();
298 }
299 validateSettings();
300 if (manual) {
301 uncheckIncompatible();
302 }
303}
304
305void VideoView::setContainer(const QString& container, bool manual) {
306 free(m_containerCstr);
307 m_container = sanitizeCodec(container, s_containerMap);
308 m_containerCstr = strdup(m_container.toUtf8().constData());
309 if (!FFmpegEncoderSetContainer(&m_encoder, m_containerCstr)) {
310 free(m_containerCstr);
311 m_containerCstr = nullptr;
312 m_container = QString();
313 }
314 validateSettings();
315 if (manual) {
316 uncheckIncompatible();
317 }
318}
319
320void VideoView::setAudioBitrate(int br, bool manual) {
321 m_abr = br * 1000;
322 FFmpegEncoderSetAudio(&m_encoder, m_audioCodecCstr, m_abr);
323 validateSettings();
324 if (manual) {
325 uncheckIncompatible();
326 }
327}
328
329void VideoView::setVideoBitrate(int br, bool manual) {
330 m_vbr = br >= 0 ? br * 1000 : 0;
331 FFmpegEncoderSetVideo(&m_encoder, m_videoCodecCstr, m_vbr, 0);
332 validateSettings();
333 if (manual) {
334 uncheckIncompatible();
335 }
336}
337
338void VideoView::setWidth(int width, bool manual) {
339 m_width = width;
340 updateAspectRatio(width, 0, false);
341 FFmpegEncoderSetDimensions(&m_encoder, m_width, m_height);
342 if (manual) {
343 uncheckIncompatible();
344 }
345}
346
347void VideoView::setHeight(int height, bool manual) {
348 m_height = height;
349 updateAspectRatio(0, height, false);
350 FFmpegEncoderSetDimensions(&m_encoder, m_width, m_height);
351 if (manual) {
352 uncheckIncompatible();
353 }
354}
355
356void VideoView::setAspectWidth(int, bool manual) {
357 updateAspectRatio(0, m_height, true);
358 FFmpegEncoderSetDimensions(&m_encoder, m_width, m_height);
359 if (manual) {
360 uncheckIncompatible();
361 }
362}
363
364void VideoView::setAspectHeight(int, bool manual) {
365 updateAspectRatio(m_width, 0, true);
366 FFmpegEncoderSetDimensions(&m_encoder, m_width, m_height);
367 if (manual) {
368 uncheckIncompatible();
369 }
370}
371
372void VideoView::showAdvanced(bool show) {
373 m_ui.advancedBox->setVisible(show);
374}
375
376bool VideoView::validateSettings() {
377 bool valid = !m_filename.isNull() && !FFmpegEncoderIsOpen(&m_encoder);
378 if (m_audioCodec.isNull()) {
379 valid = false;
380 m_ui.audio->setStyleSheet("QComboBox { color: red; }");
381 } else {
382 m_ui.audio->setStyleSheet("");
383 }
384
385 if (m_videoCodec.isNull()) {
386 valid = false;
387 m_ui.video->setStyleSheet("QComboBox { color: red; }");
388 } else {
389 m_ui.video->setStyleSheet("");
390 }
391
392 if (m_container.isNull()) {
393 valid = false;
394 m_ui.container->setStyleSheet("QComboBox { color: red; }");
395 } else {
396 m_ui.container->setStyleSheet("");
397 }
398
399 // This |valid| check is necessary as if one of the cstrs
400 // is null, the encoder likely has a dangling pointer
401 if (valid && !FFmpegEncoderVerifyContainer(&m_encoder)) {
402 valid = false;
403 }
404
405 m_ui.start->setEnabled(valid);
406
407 return valid;
408}
409
410void VideoView::updateAspectRatio(int width, int height, bool force) {
411 if (m_ui.lockRatio->isChecked() || force) {
412 if (width) {
413 height = m_ui.hratio->value() * width / m_ui.wratio->value();
414 } else if (height) {
415 width = m_ui.wratio->value() * height / m_ui.hratio->value();
416 }
417
418 m_width = width;
419 m_height = height;
420 safelySet(m_ui.width, m_width);
421 safelySet(m_ui.height, m_height);
422 } else {
423 int w = m_width;
424 int h = m_height;
425 // Get greatest common divisor
426 while (w != 0) {
427 int temp = h % w;
428 h = w;
429 w = temp;
430 }
431 int gcd = h;
432 w = m_width / gcd;
433 h = m_height / gcd;
434 safelySet(m_ui.wratio, w);
435 safelySet(m_ui.hratio, h);
436 }
437}
438
439void VideoView::uncheckIncompatible() {
440 Preset current = {
441 .container = m_container,
442 .vcodec = m_videoCodec,
443 .acodec = m_audioCodec,
444 .vbr = m_vbr / 1000,
445 .abr = m_abr / 1000,
446 .dims = QSize(m_width, m_height)
447 };
448
449 m_ui.presets->setExclusive(false);
450 m_ui.resolutions->setExclusive(false);
451 for (auto iterator = m_presets.constBegin(); iterator != m_presets.constEnd(); ++iterator) {
452 Preset next = *iterator;
453 next.container = sanitizeCodec(next.container, s_containerMap);
454 next.acodec = sanitizeCodec(next.acodec, s_acodecMap);
455 next.vcodec = sanitizeCodec(next.vcodec, s_vcodecMap);
456 if (!current.compatible(next)) {
457 safelyCheck(iterator.key(), false);
458 }
459 }
460 m_ui.presets->setExclusive(true);
461 m_ui.resolutions->setExclusive(true);
462
463 if (current.compatible(m_presets[m_ui.presetNative])) {
464 safelyCheck(m_ui.presetNative);
465 }
466 if (current.compatible(m_presets[m_ui.preset480])) {
467 safelyCheck(m_ui.preset480);
468 }
469 if (current.compatible(m_presets[m_ui.preset720])) {
470 safelyCheck(m_ui.preset720);
471 }
472 if (current.compatible(m_presets[m_ui.preset1080])) {
473 safelyCheck(m_ui.preset1080);
474 }
475}
476
477QString VideoView::sanitizeCodec(const QString& codec, const QMap<QString, QString>& mapping) {
478 QString sanitized = codec.toLower();
479 sanitized = sanitized.remove(QChar('.'));
480 sanitized = sanitized.remove(QChar('('));
481 sanitized = sanitized.remove(QChar(')'));
482 if (mapping.contains(sanitized)) {
483 sanitized = mapping[sanitized];
484 }
485 return sanitized;
486}
487
488void VideoView::safelyCheck(QAbstractButton* button, bool set) {
489 bool signalsBlocked = button->blockSignals(true);
490 bool autoExclusive = button->autoExclusive();
491 button->setAutoExclusive(false);
492 button->setChecked(set);
493 button->setAutoExclusive(autoExclusive);
494 button->blockSignals(signalsBlocked);
495}
496
497void VideoView::safelySet(QSpinBox* box, int value) {
498 bool signalsBlocked = box->blockSignals(true);
499 box->setValue(value);
500 box->blockSignals(signalsBlocked);
501}
502
503void VideoView::safelySet(QComboBox* box, const QString& value) {
504 bool signalsBlocked = box->blockSignals(true);
505 box->lineEdit()->setText(value);
506 box->blockSignals(signalsBlocked);
507}
508
509void VideoView::addPreset(QAbstractButton* button, const Preset& preset) {
510 m_presets[button] = preset;
511 button->disconnect();
512 connect(button, &QAbstractButton::pressed, [this, preset]() {
513 setPreset(preset);
514 });
515}
516
517void VideoView::setPreset(const Preset& preset) {
518 if (!preset.container.isNull()) {
519 setContainer(preset.container, false);
520 safelySet(m_ui.container, preset.container);
521 }
522 if (!preset.acodec.isNull()) {
523 setAudioCodec(preset.acodec, false);
524 safelySet(m_ui.audio, preset.acodec);
525 }
526 if (!preset.vcodec.isNull()) {
527 setVideoCodec(preset.vcodec, false);
528 safelySet(m_ui.video, preset.vcodec);
529 }
530 if (preset.abr) {
531 setAudioBitrate(preset.abr, false);
532 safelySet(m_ui.abr, preset.abr);
533 }
534 if (preset.vbr) {
535 setVideoBitrate(preset.vbr, false);
536 safelySet(m_ui.vbr, preset.vbr);
537 }
538 if (preset.dims.width() > 0) {
539 setWidth(preset.dims.width(), false);
540 safelySet(m_ui.width, preset.dims.width());
541 }
542 if (preset.dims.height() > 0) {
543 setHeight(preset.dims.height(), false);
544 safelySet(m_ui.height, preset.dims.height());
545 }
546
547 uncheckIncompatible();
548 validateSettings();
549}
550
551QSize VideoView::maintainAspect(const QSize& size) {
552 QSize ds = size;
553 if (ds.width() * m_nativeHeight > ds.height() * m_nativeWidth) {
554 ds.setWidth(ds.height() * m_nativeWidth / m_nativeHeight);
555 } else if (ds.width() * m_nativeHeight < ds.height() * m_nativeWidth) {
556 ds.setHeight(ds.width() * m_nativeHeight / m_nativeWidth);
557 }
558 return ds;
559}
560
561#endif