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["uncompressed"] = "pcm_s16le";
55 }
56 if (s_vcodecMap.empty()) {
57 s_vcodecMap["dirac"] = "libschroedinger";
58 s_vcodecMap["h264"] = "libx264";
59 s_vcodecMap["h264 nvenc"] = "h264_nvenc";
60 s_vcodecMap["hevc"] = "libx265";
61 s_vcodecMap["hevc nvenc"] = "hevc_nvenc";
62 s_vcodecMap["theora"] = "libtheora";
63 s_vcodecMap["vp8"] = "libvpx";
64 s_vcodecMap["vp9"] = "libvpx-vp9";
65 s_vcodecMap["xvid"] = "libxvid";
66 }
67 if (s_containerMap.empty()) {
68 s_containerMap["mkv"] = "matroska";
69 }
70
71 connect(m_ui.buttonBox, &QDialogButtonBox::rejected, this, &VideoView::close);
72 connect(m_ui.start, &QAbstractButton::clicked, this, &VideoView::startRecording);
73 connect(m_ui.stop, &QAbstractButton::clicked, this, &VideoView::stopRecording);
74
75 connect(m_ui.selectFile, &QAbstractButton::clicked, this, &VideoView::selectFile);
76 connect(m_ui.filename, &QLineEdit::textChanged, this, &VideoView::setFilename);
77
78 connect(m_ui.audio, SIGNAL(activated(const QString&)), this, SLOT(setAudioCodec(const QString&)));
79 connect(m_ui.video, SIGNAL(activated(const QString&)), this, SLOT(setVideoCodec(const QString&)));
80 connect(m_ui.container, SIGNAL(activated(const QString&)), this, SLOT(setContainer(const QString&)));
81 connect(m_ui.audio, SIGNAL(editTextChanged(const QString&)), this, SLOT(setAudioCodec(const QString&)));
82 connect(m_ui.video, SIGNAL(editTextChanged(const QString&)), this, SLOT(setVideoCodec(const QString&)));
83 connect(m_ui.container, SIGNAL(editTextChanged(const QString&)), this, SLOT(setContainer(const QString&)));
84
85 connect(m_ui.abr, SIGNAL(valueChanged(int)), this, SLOT(setAudioBitrate(int)));
86 connect(m_ui.vbr, SIGNAL(valueChanged(int)), this, SLOT(setVideoBitrate(int)));
87
88 connect(m_ui.width, SIGNAL(valueChanged(int)), this, SLOT(setWidth(int)));
89 connect(m_ui.height, SIGNAL(valueChanged(int)), this, SLOT(setHeight(int)));
90
91 connect(m_ui.wratio, SIGNAL(valueChanged(int)), this, SLOT(setAspectWidth(int)));
92 connect(m_ui.hratio, SIGNAL(valueChanged(int)), this, SLOT(setAspectHeight(int)));
93
94 connect(m_ui.showAdvanced, &QAbstractButton::clicked, this, &VideoView::showAdvanced);
95
96 FFmpegEncoderInit(&m_encoder);
97
98 updatePresets();
99
100 setPreset({
101 .container = "MKV",
102 .vcodec = "h.264",
103 .acodec = "FLAC",
104 .vbr = 0,
105 .abr = 0,
106 .dims = QSize(),
107 });
108 showAdvanced(false);
109}
110
111void VideoView::updatePresets() {
112 m_presets.clear();
113
114 addPreset(m_ui.preset1080, {
115 .container = QString(),
116 .vcodec = QString(),
117 .acodec = QString(),
118 .vbr = 0,
119 .abr = 0,
120 .dims = maintainAspect(QSize(1920, 1080))
121 });
122
123 addPreset(m_ui.preset720, {
124 .container = QString(),
125 .vcodec = QString(),
126 .acodec = QString(),
127 .vbr = 0,
128 .abr = 0,
129 .dims = maintainAspect(QSize(1280, 720))
130 });
131
132 addPreset(m_ui.preset480, {
133 .container = QString(),
134 .vcodec = QString(),
135 .acodec = QString(),
136 .vbr = 0,
137 .abr = 0,
138 .dims = maintainAspect(QSize(720, 480))
139 });
140
141 if (m_nativeWidth && m_nativeHeight) {
142 addPreset(m_ui.presetNative, {
143 .container = QString(),
144 .vcodec = QString(),
145 .acodec = QString(),
146 .vbr = 0,
147 .abr = 0,
148 .dims = QSize(m_nativeWidth, m_nativeHeight)
149 });
150 m_ui.presetNative->setEnabled(true);
151 }
152
153 addPreset(m_ui.presetHQ, {
154 .container = "MP4",
155 .vcodec = "h.264",
156 .acodec = "AAC",
157 .vbr = 8000,
158 .abr = 384,
159 .dims = maintainAspect(QSize(1920, 1080))
160 });
161
162 addPreset(m_ui.presetYoutube, {
163 .container = "MP4",
164 .vcodec = "h.264",
165 .acodec = "AAC",
166 .vbr = 5000,
167 .abr = 256,
168 .dims = maintainAspect(QSize(1280, 720))
169 });
170
171 addPreset(m_ui.presetWebM, {
172 .container = "WebM",
173 .vcodec = "VP8",
174 .acodec = "Vorbis",
175 .vbr = 800,
176 .abr = 128
177 });
178
179 if (m_nativeWidth && m_nativeHeight) {
180 addPreset(m_ui.presetLossless, {
181 .container = "MKV",
182 .vcodec = "h.264",
183 .acodec = "FLAC",
184 .vbr = 0,
185 .abr = 0,
186 .dims = QSize(m_nativeWidth, m_nativeHeight)
187 });
188 }
189}
190
191VideoView::~VideoView() {
192 stopRecording();
193 free(m_audioCodecCstr);
194 free(m_videoCodecCstr);
195 free(m_containerCstr);
196}
197
198void VideoView::setController(std::shared_ptr<CoreController> controller) {
199 connect(controller.get(), &CoreController::stopping, this, &VideoView::stopRecording);
200 connect(this, &VideoView::recordingStarted, controller.get(), &CoreController::setAVStream);
201 connect(this, &VideoView::recordingStopped, controller.get(), &CoreController::clearAVStream, Qt::DirectConnection);
202
203 setNativeResolution(controller->screenDimensions());
204}
205
206void VideoView::startRecording() {
207 if (!validateSettings()) {
208 return;
209 }
210 if (!FFmpegEncoderOpen(&m_encoder, m_filename.toUtf8().constData())) {
211 LOG(QT, ERROR) << tr("Failed to open output video file: %1").arg(m_filename);
212 return;
213 }
214 m_ui.start->setEnabled(false);
215 m_ui.stop->setEnabled(true);
216 emit recordingStarted(&m_encoder.d);
217}
218
219void VideoView::stopRecording() {
220 emit recordingStopped();
221 FFmpegEncoderClose(&m_encoder);
222 m_ui.stop->setEnabled(false);
223 validateSettings();
224}
225
226void VideoView::setNativeResolution(const QSize& dims) {
227 m_nativeWidth = dims.width();
228 m_nativeHeight = dims.height();
229 m_ui.presetNative->setText(tr("Native (%0x%1)").arg(m_nativeWidth).arg(m_nativeHeight));
230 QSize newSize = maintainAspect(QSize(m_width, m_height));
231 m_width = newSize.width();
232 m_height = newSize.height();
233 updateAspectRatio(m_nativeWidth, m_nativeHeight, false);
234 updatePresets();
235 for (auto iterator = m_presets.constBegin(); iterator != m_presets.constEnd(); ++iterator) {
236 if (iterator.key()->isChecked()) {
237 setPreset(*iterator);
238 break;
239 }
240 }
241}
242
243void VideoView::selectFile() {
244 QString filename = GBAApp::app()->getSaveFileName(this, tr("Select output file"));
245 if (!filename.isEmpty()) {
246 m_ui.filename->setText(filename);
247 }
248}
249
250void VideoView::setFilename(const QString& fname) {
251 m_filename = fname;
252 validateSettings();
253}
254
255void VideoView::setAudioCodec(const QString& codec, bool manual) {
256 free(m_audioCodecCstr);
257 m_audioCodec = sanitizeCodec(codec, s_acodecMap);
258 if (m_audioCodec == "none") {
259 m_audioCodecCstr = nullptr;
260 } else {
261 m_audioCodecCstr = strdup(m_audioCodec.toUtf8().constData());
262 }
263 if (!FFmpegEncoderSetAudio(&m_encoder, m_audioCodecCstr, m_abr)) {
264 free(m_audioCodecCstr);
265 m_audioCodecCstr = nullptr;
266 m_audioCodec = QString();
267 }
268 validateSettings();
269 if (manual) {
270 uncheckIncompatible();
271 }
272}
273
274void VideoView::setVideoCodec(const QString& codec, bool manual) {
275 free(m_videoCodecCstr);
276 m_videoCodec = sanitizeCodec(codec, s_vcodecMap);
277 m_videoCodecCstr = strdup(m_videoCodec.toUtf8().constData());
278 if (!FFmpegEncoderSetVideo(&m_encoder, m_videoCodecCstr, m_vbr)) {
279 free(m_videoCodecCstr);
280 m_videoCodecCstr = nullptr;
281 m_videoCodec = QString();
282 }
283 validateSettings();
284 if (manual) {
285 uncheckIncompatible();
286 }
287}
288
289void VideoView::setContainer(const QString& container, bool manual) {
290 free(m_containerCstr);
291 m_container = sanitizeCodec(container, s_containerMap);
292 m_containerCstr = strdup(m_container.toUtf8().constData());
293 if (!FFmpegEncoderSetContainer(&m_encoder, m_containerCstr)) {
294 free(m_containerCstr);
295 m_containerCstr = nullptr;
296 m_container = QString();
297 }
298 validateSettings();
299 if (manual) {
300 uncheckIncompatible();
301 }
302}
303
304void VideoView::setAudioBitrate(int br, bool manual) {
305 m_abr = br * 1000;
306 FFmpegEncoderSetAudio(&m_encoder, m_audioCodecCstr, m_abr);
307 validateSettings();
308 if (manual) {
309 uncheckIncompatible();
310 }
311}
312
313void VideoView::setVideoBitrate(int br, bool manual) {
314 m_vbr = br * 1000;
315 FFmpegEncoderSetVideo(&m_encoder, m_videoCodecCstr, m_vbr);
316 validateSettings();
317 if (manual) {
318 uncheckIncompatible();
319 }
320}
321
322void VideoView::setWidth(int width, bool manual) {
323 m_width = width;
324 updateAspectRatio(width, 0, false);
325 FFmpegEncoderSetDimensions(&m_encoder, m_width, m_height);
326 if (manual) {
327 uncheckIncompatible();
328 }
329}
330
331void VideoView::setHeight(int height, bool manual) {
332 m_height = height;
333 updateAspectRatio(0, height, false);
334 FFmpegEncoderSetDimensions(&m_encoder, m_width, m_height);
335 if (manual) {
336 uncheckIncompatible();
337 }
338}
339
340void VideoView::setAspectWidth(int, bool manual) {
341 updateAspectRatio(0, m_height, true);
342 FFmpegEncoderSetDimensions(&m_encoder, m_width, m_height);
343 if (manual) {
344 uncheckIncompatible();
345 }
346}
347
348void VideoView::setAspectHeight(int, bool manual) {
349 updateAspectRatio(m_width, 0, true);
350 FFmpegEncoderSetDimensions(&m_encoder, m_width, m_height);
351 if (manual) {
352 uncheckIncompatible();
353 }
354}
355
356void VideoView::showAdvanced(bool show) {
357 m_ui.advancedBox->setVisible(show);
358}
359
360bool VideoView::validateSettings() {
361 bool valid = !m_filename.isNull() && !FFmpegEncoderIsOpen(&m_encoder);
362 if (m_audioCodec.isNull()) {
363 valid = false;
364 m_ui.audio->setStyleSheet("QComboBox { color: red; }");
365 } else {
366 m_ui.audio->setStyleSheet("");
367 }
368
369 if (m_videoCodec.isNull()) {
370 valid = false;
371 m_ui.video->setStyleSheet("QComboBox { color: red; }");
372 } else {
373 m_ui.video->setStyleSheet("");
374 }
375
376 if (m_container.isNull()) {
377 valid = false;
378 m_ui.container->setStyleSheet("QComboBox { color: red; }");
379 } else {
380 m_ui.container->setStyleSheet("");
381 }
382
383 // This |valid| check is necessary as if one of the cstrs
384 // is null, the encoder likely has a dangling pointer
385 if (valid && !FFmpegEncoderVerifyContainer(&m_encoder)) {
386 valid = false;
387 }
388
389 m_ui.start->setEnabled(valid);
390
391 return valid;
392}
393
394void VideoView::updateAspectRatio(int width, int height, bool force) {
395 if (m_ui.lockRatio->isChecked() || force) {
396 if (width) {
397 height = m_ui.hratio->value() * width / m_ui.wratio->value();
398 } else if (height) {
399 width = m_ui.wratio->value() * height / m_ui.hratio->value();
400 }
401
402 m_width = width;
403 m_height = height;
404 safelySet(m_ui.width, m_width);
405 safelySet(m_ui.height, m_height);
406 } else {
407 int w = m_width;
408 int h = m_height;
409 // Get greatest common divisor
410 while (w != 0) {
411 int temp = h % w;
412 h = w;
413 w = temp;
414 }
415 int gcd = h;
416 w = m_width / gcd;
417 h = m_height / gcd;
418 safelySet(m_ui.wratio, w);
419 safelySet(m_ui.hratio, h);
420 }
421}
422
423void VideoView::uncheckIncompatible() {
424 Preset current = {
425 .container = m_container,
426 .vcodec = m_videoCodec,
427 .acodec = m_audioCodec,
428 .vbr = m_vbr / 1000,
429 .abr = m_abr / 1000,
430 .dims = QSize(m_width, m_height)
431 };
432
433 m_ui.presets->setExclusive(false);
434 m_ui.resolutions->setExclusive(false);
435 for (auto iterator = m_presets.constBegin(); iterator != m_presets.constEnd(); ++iterator) {
436 Preset next = *iterator;
437 next.container = sanitizeCodec(next.container, s_containerMap);
438 next.acodec = sanitizeCodec(next.acodec, s_acodecMap);
439 next.vcodec = sanitizeCodec(next.vcodec, s_vcodecMap);
440 if (!current.compatible(next)) {
441 safelyCheck(iterator.key(), false);
442 }
443 }
444 m_ui.presets->setExclusive(true);
445 m_ui.resolutions->setExclusive(true);
446
447 if (current.compatible(m_presets[m_ui.presetNative])) {
448 safelyCheck(m_ui.presetNative);
449 }
450 if (current.compatible(m_presets[m_ui.preset480])) {
451 safelyCheck(m_ui.preset480);
452 }
453 if (current.compatible(m_presets[m_ui.preset720])) {
454 safelyCheck(m_ui.preset720);
455 }
456 if (current.compatible(m_presets[m_ui.preset1080])) {
457 safelyCheck(m_ui.preset1080);
458 }
459}
460
461QString VideoView::sanitizeCodec(const QString& codec, const QMap<QString, QString>& mapping) {
462 QString sanitized = codec.toLower();
463 sanitized = sanitized.remove(QChar('.'));
464 sanitized = sanitized.remove(QChar('('));
465 sanitized = sanitized.remove(QChar(')'));
466 if (mapping.contains(sanitized)) {
467 sanitized = mapping[sanitized];
468 }
469 return sanitized;
470}
471
472void VideoView::safelyCheck(QAbstractButton* button, bool set) {
473 bool signalsBlocked = button->blockSignals(true);
474 bool autoExclusive = button->autoExclusive();
475 button->setAutoExclusive(false);
476 button->setChecked(set);
477 button->setAutoExclusive(autoExclusive);
478 button->blockSignals(signalsBlocked);
479}
480
481void VideoView::safelySet(QSpinBox* box, int value) {
482 bool signalsBlocked = box->blockSignals(true);
483 box->setValue(value);
484 box->blockSignals(signalsBlocked);
485}
486
487void VideoView::safelySet(QComboBox* box, const QString& value) {
488 bool signalsBlocked = box->blockSignals(true);
489 box->lineEdit()->setText(value);
490 box->blockSignals(signalsBlocked);
491}
492
493void VideoView::addPreset(QAbstractButton* button, const Preset& preset) {
494 m_presets[button] = preset;
495 button->disconnect();
496 connect(button, &QAbstractButton::pressed, [this, preset]() {
497 setPreset(preset);
498 });
499}
500
501void VideoView::setPreset(const Preset& preset) {
502 if (!preset.container.isNull()) {
503 setContainer(preset.container, false);
504 safelySet(m_ui.container, preset.container);
505 }
506 if (!preset.acodec.isNull()) {
507 setAudioCodec(preset.acodec, false);
508 safelySet(m_ui.audio, preset.acodec);
509 }
510 if (!preset.vcodec.isNull()) {
511 setVideoCodec(preset.vcodec, false);
512 safelySet(m_ui.video, preset.vcodec);
513 }
514 if (preset.abr) {
515 setAudioBitrate(preset.abr, false);
516 safelySet(m_ui.abr, preset.abr);
517 }
518 if (preset.vbr) {
519 setVideoBitrate(preset.vbr, false);
520 safelySet(m_ui.vbr, preset.vbr);
521 }
522 if (preset.dims.width() > 0) {
523 setWidth(preset.dims.width(), false);
524 safelySet(m_ui.width, preset.dims.width());
525 }
526 if (preset.dims.height() > 0) {
527 setHeight(preset.dims.height(), false);
528 safelySet(m_ui.height, preset.dims.height());
529 }
530
531 uncheckIncompatible();
532 validateSettings();
533}
534
535QSize VideoView::maintainAspect(const QSize& size) {
536 QSize ds = size;
537 if (ds.width() * m_nativeHeight > ds.height() * m_nativeWidth) {
538 ds.setWidth(ds.height() * m_nativeWidth / m_nativeHeight);
539 } else if (ds.width() * m_nativeHeight < ds.height() * m_nativeWidth) {
540 ds.setHeight(ds.width() * m_nativeHeight / m_nativeWidth);
541 }
542 return ds;
543}
544
545#endif