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 = "PNG",
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 = "PNG",
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::startRecording() {
199 if (!validateSettings()) {
200 return;
201 }
202 if (!FFmpegEncoderOpen(&m_encoder, m_filename.toUtf8().constData())) {
203 LOG(QT, ERROR) << tr("Failed to open output video file: %1").arg(m_filename);
204 return;
205 }
206 m_ui.start->setEnabled(false);
207 m_ui.stop->setEnabled(true);
208 emit recordingStarted(&m_encoder.d);
209}
210
211void VideoView::stopRecording() {
212 emit recordingStopped();
213 FFmpegEncoderClose(&m_encoder);
214 m_ui.stop->setEnabled(false);
215 validateSettings();
216}
217
218void VideoView::setNativeResolution(const QSize& dims) {
219 m_nativeWidth = dims.width();
220 m_nativeHeight = dims.height();
221 m_ui.presetNative->setText(tr("Native (%0x%1)").arg(m_nativeWidth).arg(m_nativeHeight));
222 QSize newSize = maintainAspect(QSize(m_width, m_height));
223 m_width = newSize.width();
224 m_height = newSize.height();
225 updateAspectRatio(m_nativeWidth, m_nativeHeight, false);
226 updatePresets();
227 for (auto iterator = m_presets.constBegin(); iterator != m_presets.constEnd(); ++iterator) {
228 if (iterator.key()->isChecked()) {
229 setPreset(*iterator);
230 break;
231 }
232 }
233}
234
235void VideoView::setNativeFrameRate(const QPair<unsigned, unsigned>& ratio) {
236 FFmpegEncoderSetInputFrameRate(&m_encoder, ratio.first, ratio.second);
237}
238
239void VideoView::selectFile() {
240 QString filename = GBAApp::app()->getSaveFileName(this, tr("Select output file"));
241 if (!filename.isEmpty()) {
242 m_ui.filename->setText(filename);
243 }
244}
245
246void VideoView::setFilename(const QString& fname) {
247 m_filename = fname;
248 validateSettings();
249}
250
251void VideoView::setAudioCodec(const QString& codec, bool manual) {
252 free(m_audioCodecCstr);
253 m_audioCodec = sanitizeCodec(codec, s_acodecMap);
254 if (m_audioCodec == "none") {
255 m_audioCodecCstr = nullptr;
256 } else {
257 m_audioCodecCstr = strdup(m_audioCodec.toUtf8().constData());
258 }
259 if (!FFmpegEncoderSetAudio(&m_encoder, m_audioCodecCstr, m_abr)) {
260 free(m_audioCodecCstr);
261 m_audioCodecCstr = nullptr;
262 m_audioCodec = QString();
263 }
264 validateSettings();
265 if (manual) {
266 uncheckIncompatible();
267 }
268}
269
270void VideoView::setVideoCodec(const QString& codec, bool manual) {
271 free(m_videoCodecCstr);
272 m_videoCodec = sanitizeCodec(codec, s_vcodecMap);
273 m_videoCodecCstr = strdup(m_videoCodec.toUtf8().constData());
274 if (!FFmpegEncoderSetVideo(&m_encoder, m_videoCodecCstr, m_vbr)) {
275 free(m_videoCodecCstr);
276 m_videoCodecCstr = nullptr;
277 m_videoCodec = QString();
278 }
279 validateSettings();
280 if (manual) {
281 uncheckIncompatible();
282 }
283}
284
285void VideoView::setContainer(const QString& container, bool manual) {
286 free(m_containerCstr);
287 m_container = sanitizeCodec(container, s_containerMap);
288 m_containerCstr = strdup(m_container.toUtf8().constData());
289 if (!FFmpegEncoderSetContainer(&m_encoder, m_containerCstr)) {
290 free(m_containerCstr);
291 m_containerCstr = nullptr;
292 m_container = QString();
293 }
294 validateSettings();
295 if (manual) {
296 uncheckIncompatible();
297 }
298}
299
300void VideoView::setAudioBitrate(int br, bool manual) {
301 m_abr = br * 1000;
302 FFmpegEncoderSetAudio(&m_encoder, m_audioCodecCstr, m_abr);
303 validateSettings();
304 if (manual) {
305 uncheckIncompatible();
306 }
307}
308
309void VideoView::setVideoBitrate(int br, bool manual) {
310 m_vbr = br * 1000;
311 FFmpegEncoderSetVideo(&m_encoder, m_videoCodecCstr, m_vbr);
312 validateSettings();
313 if (manual) {
314 uncheckIncompatible();
315 }
316}
317
318void VideoView::setWidth(int width, bool manual) {
319 m_width = width;
320 updateAspectRatio(width, 0, false);
321 FFmpegEncoderSetDimensions(&m_encoder, m_width, m_height);
322 if (manual) {
323 uncheckIncompatible();
324 }
325}
326
327void VideoView::setHeight(int height, bool manual) {
328 m_height = height;
329 updateAspectRatio(0, height, false);
330 FFmpegEncoderSetDimensions(&m_encoder, m_width, m_height);
331 if (manual) {
332 uncheckIncompatible();
333 }
334}
335
336void VideoView::setAspectWidth(int, bool manual) {
337 updateAspectRatio(0, m_height, true);
338 FFmpegEncoderSetDimensions(&m_encoder, m_width, m_height);
339 if (manual) {
340 uncheckIncompatible();
341 }
342}
343
344void VideoView::setAspectHeight(int, bool manual) {
345 updateAspectRatio(m_width, 0, true);
346 FFmpegEncoderSetDimensions(&m_encoder, m_width, m_height);
347 if (manual) {
348 uncheckIncompatible();
349 }
350}
351
352void VideoView::showAdvanced(bool show) {
353 m_ui.advancedBox->setVisible(show);
354}
355
356bool VideoView::validateSettings() {
357 bool valid = !m_filename.isNull() && !FFmpegEncoderIsOpen(&m_encoder);
358 if (m_audioCodec.isNull()) {
359 valid = false;
360 m_ui.audio->setStyleSheet("QComboBox { color: red; }");
361 } else {
362 m_ui.audio->setStyleSheet("");
363 }
364
365 if (m_videoCodec.isNull()) {
366 valid = false;
367 m_ui.video->setStyleSheet("QComboBox { color: red; }");
368 } else {
369 m_ui.video->setStyleSheet("");
370 }
371
372 if (m_container.isNull()) {
373 valid = false;
374 m_ui.container->setStyleSheet("QComboBox { color: red; }");
375 } else {
376 m_ui.container->setStyleSheet("");
377 }
378
379 // This |valid| check is necessary as if one of the cstrs
380 // is null, the encoder likely has a dangling pointer
381 if (valid && !FFmpegEncoderVerifyContainer(&m_encoder)) {
382 valid = false;
383 }
384
385 m_ui.start->setEnabled(valid);
386
387 return valid;
388}
389
390void VideoView::updateAspectRatio(int width, int height, bool force) {
391 if (m_ui.lockRatio->isChecked() || force) {
392 if (width) {
393 height = m_ui.hratio->value() * width / m_ui.wratio->value();
394 } else if (height) {
395 width = m_ui.wratio->value() * height / m_ui.hratio->value();
396 }
397
398 m_width = width;
399 m_height = height;
400 safelySet(m_ui.width, m_width);
401 safelySet(m_ui.height, m_height);
402 } else {
403 int w = m_width;
404 int h = m_height;
405 // Get greatest common divisor
406 while (w != 0) {
407 int temp = h % w;
408 h = w;
409 w = temp;
410 }
411 int gcd = h;
412 w = m_width / gcd;
413 h = m_height / gcd;
414 safelySet(m_ui.wratio, w);
415 safelySet(m_ui.hratio, h);
416 }
417}
418
419void VideoView::uncheckIncompatible() {
420 Preset current = {
421 .container = m_container,
422 .vcodec = m_videoCodec,
423 .acodec = m_audioCodec,
424 .vbr = m_vbr / 1000,
425 .abr = m_abr / 1000,
426 .dims = QSize(m_width, m_height)
427 };
428
429 m_ui.presets->setExclusive(false);
430 m_ui.resolutions->setExclusive(false);
431 for (auto iterator = m_presets.constBegin(); iterator != m_presets.constEnd(); ++iterator) {
432 Preset next = *iterator;
433 next.container = sanitizeCodec(next.container, s_containerMap);
434 next.acodec = sanitizeCodec(next.acodec, s_acodecMap);
435 next.vcodec = sanitizeCodec(next.vcodec, s_vcodecMap);
436 if (!current.compatible(next)) {
437 safelyCheck(iterator.key(), false);
438 }
439 }
440 m_ui.presets->setExclusive(true);
441 m_ui.resolutions->setExclusive(true);
442
443 if (current.compatible(m_presets[m_ui.presetNative])) {
444 safelyCheck(m_ui.presetNative);
445 }
446 if (current.compatible(m_presets[m_ui.preset480])) {
447 safelyCheck(m_ui.preset480);
448 }
449 if (current.compatible(m_presets[m_ui.preset720])) {
450 safelyCheck(m_ui.preset720);
451 }
452 if (current.compatible(m_presets[m_ui.preset1080])) {
453 safelyCheck(m_ui.preset1080);
454 }
455}
456
457QString VideoView::sanitizeCodec(const QString& codec, const QMap<QString, QString>& mapping) {
458 QString sanitized = codec.toLower();
459 sanitized = sanitized.remove(QChar('.'));
460 sanitized = sanitized.remove(QChar('('));
461 sanitized = sanitized.remove(QChar(')'));
462 if (mapping.contains(sanitized)) {
463 sanitized = mapping[sanitized];
464 }
465 return sanitized;
466}
467
468void VideoView::safelyCheck(QAbstractButton* button, bool set) {
469 bool signalsBlocked = button->blockSignals(true);
470 bool autoExclusive = button->autoExclusive();
471 button->setAutoExclusive(false);
472 button->setChecked(set);
473 button->setAutoExclusive(autoExclusive);
474 button->blockSignals(signalsBlocked);
475}
476
477void VideoView::safelySet(QSpinBox* box, int value) {
478 bool signalsBlocked = box->blockSignals(true);
479 box->setValue(value);
480 box->blockSignals(signalsBlocked);
481}
482
483void VideoView::safelySet(QComboBox* box, const QString& value) {
484 bool signalsBlocked = box->blockSignals(true);
485 box->lineEdit()->setText(value);
486 box->blockSignals(signalsBlocked);
487}
488
489void VideoView::addPreset(QAbstractButton* button, const Preset& preset) {
490 m_presets[button] = preset;
491 button->disconnect();
492 connect(button, &QAbstractButton::pressed, [this, preset]() {
493 setPreset(preset);
494 });
495}
496
497void VideoView::setPreset(const Preset& preset) {
498 if (!preset.container.isNull()) {
499 setContainer(preset.container, false);
500 safelySet(m_ui.container, preset.container);
501 }
502 if (!preset.acodec.isNull()) {
503 setAudioCodec(preset.acodec, false);
504 safelySet(m_ui.audio, preset.acodec);
505 }
506 if (!preset.vcodec.isNull()) {
507 setVideoCodec(preset.vcodec, false);
508 safelySet(m_ui.video, preset.vcodec);
509 }
510 if (preset.abr) {
511 setAudioBitrate(preset.abr, false);
512 safelySet(m_ui.abr, preset.abr);
513 }
514 if (preset.vbr) {
515 setVideoBitrate(preset.vbr, false);
516 safelySet(m_ui.vbr, preset.vbr);
517 }
518 if (preset.dims.width() > 0) {
519 setWidth(preset.dims.width(), false);
520 safelySet(m_ui.width, preset.dims.width());
521 }
522 if (preset.dims.height() > 0) {
523 setHeight(preset.dims.height(), false);
524 safelySet(m_ui.height, preset.dims.height());
525 }
526
527 uncheckIncompatible();
528 validateSettings();
529}
530
531QSize VideoView::maintainAspect(const QSize& size) {
532 QSize ds = size;
533 if (ds.width() * m_nativeHeight > ds.height() * m_nativeWidth) {
534 ds.setWidth(ds.height() * m_nativeWidth / m_nativeHeight);
535 } else if (ds.width() * m_nativeHeight < ds.height() * m_nativeWidth) {
536 ds.setHeight(ds.width() * m_nativeHeight / m_nativeWidth);
537 }
538 return ds;
539}
540
541#endif