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 <mgba-util/math.h>
14
15#include <QMap>
16
17using namespace QGBA;
18
19QMap<QString, QString> VideoView::s_acodecMap;
20QMap<QString, QString> VideoView::s_vcodecMap;
21QMap<QString, QString> VideoView::s_containerMap;
22
23bool VideoView::Preset::compatible(const Preset& other) const {
24 if (!other.container.isNull() && !container.isNull() && other.container != container) {
25 return false;
26 }
27 if (!other.acodec.isNull() && !acodec.isNull() && other.acodec != acodec) {
28 return false;
29 }
30 if (!other.vcodec.isNull() && !vcodec.isNull() && other.vcodec != vcodec) {
31 return false;
32 }
33 if (other.abr && abr && other.abr != abr) {
34 return false;
35 }
36 if (other.vbr && vbr && other.vbr != vbr) {
37 return false;
38 }
39 if (other.dims.width() && dims.width() && other.dims.width() != dims.width()) {
40 return false;
41 }
42 if (other.dims.height() && dims.height() && other.dims.height() != dims.height()) {
43 return false;
44 }
45 return true;
46}
47
48VideoView::VideoView(QWidget* parent)
49 : QWidget(parent)
50{
51 m_ui.setupUi(this);
52
53 if (s_acodecMap.empty()) {
54 s_acodecMap["mp3"] = "libmp3lame";
55 s_acodecMap["opus"] = "libopus";
56 s_acodecMap["vorbis"] = "libvorbis";
57 s_acodecMap["uncompressed"] = "pcm_s16le";
58 }
59 if (s_vcodecMap.empty()) {
60 s_vcodecMap["dirac"] = "libschroedinger";
61 s_vcodecMap["h264"] = "libx264";
62 s_vcodecMap["h264 nvenc"] = "h264_nvenc";
63 s_vcodecMap["hevc"] = "libx265";
64 s_vcodecMap["hevc nvenc"] = "hevc_nvenc";
65 s_vcodecMap["theora"] = "libtheora";
66 s_vcodecMap["vp8"] = "libvpx";
67 s_vcodecMap["vp9"] = "libvpx-vp9";
68 s_vcodecMap["xvid"] = "libxvid";
69 }
70 if (s_containerMap.empty()) {
71 s_containerMap["mkv"] = "matroska";
72 }
73
74 connect(m_ui.buttonBox, &QDialogButtonBox::rejected, this, &VideoView::close);
75 connect(m_ui.start, &QAbstractButton::clicked, this, &VideoView::startRecording);
76 connect(m_ui.stop, &QAbstractButton::clicked, this, &VideoView::stopRecording);
77
78 connect(m_ui.selectFile, &QAbstractButton::clicked, this, &VideoView::selectFile);
79 connect(m_ui.filename, &QLineEdit::textChanged, this, &VideoView::setFilename);
80
81 connect(m_ui.audio, SIGNAL(activated(const QString&)), this, SLOT(setAudioCodec(const QString&)));
82 connect(m_ui.video, SIGNAL(activated(const QString&)), this, SLOT(setVideoCodec(const QString&)));
83 connect(m_ui.container, SIGNAL(activated(const QString&)), this, SLOT(setContainer(const QString&)));
84 connect(m_ui.audio, SIGNAL(editTextChanged(const QString&)), this, SLOT(setAudioCodec(const QString&)));
85 connect(m_ui.video, SIGNAL(editTextChanged(const QString&)), this, SLOT(setVideoCodec(const QString&)));
86 connect(m_ui.container, SIGNAL(editTextChanged(const QString&)), this, SLOT(setContainer(const QString&)));
87
88 connect(m_ui.abr, SIGNAL(valueChanged(int)), this, SLOT(setAudioBitrate(int)));
89 connect(m_ui.vbr, SIGNAL(valueChanged(int)), this, SLOT(setVideoBitrate(int)));
90
91 connect(m_ui.width, SIGNAL(valueChanged(int)), this, SLOT(setWidth(int)));
92 connect(m_ui.height, SIGNAL(valueChanged(int)), this, SLOT(setHeight(int)));
93
94 connect(m_ui.wratio, SIGNAL(valueChanged(int)), this, SLOT(setAspectWidth(int)));
95 connect(m_ui.hratio, SIGNAL(valueChanged(int)), this, SLOT(setAspectHeight(int)));
96
97 connect(m_ui.showAdvanced, &QAbstractButton::clicked, this, &VideoView::showAdvanced);
98
99 FFmpegEncoderInit(&m_encoder);
100
101 updatePresets();
102
103 setPreset({
104 "MKV",
105 "h.264",
106 "FLAC",
107 -1,
108 0,
109 });
110 showAdvanced(false);
111}
112
113void VideoView::updatePresets() {
114 m_presets.clear();
115
116 addPreset(m_ui.preset4K, { maintainAspect(QSize(3840, 2160)) });
117 addPreset(m_ui.preset1080, { maintainAspect(QSize(1920, 1080)) });
118 addPreset(m_ui.preset720, { maintainAspect(QSize(1280, 720)) });
119 addPreset(m_ui.preset480, { maintainAspect(QSize(720, 480)) });
120
121 if (m_nativeWidth && m_nativeHeight) {
122 addPreset(m_ui.presetNative, { QSize(m_nativeWidth, m_nativeHeight) });
123 m_ui.presetNative->setEnabled(true);
124 }
125
126 addPreset(m_ui.presetHQ, {
127 "MP4",
128 "h.264",
129 "AAC",
130 8000,
131 384,
132 maintainAspect({ 1920, 1080 })
133 });
134
135 addPreset(m_ui.presetYoutube, {
136 "MP4",
137 "h.264",
138 "AAC",
139 5000,
140 256,
141 maintainAspect({ 1280, 720 })
142 });
143
144 addPreset(m_ui.presetWebM, {
145 "WebM",
146 "VP9",
147 "Opus",
148 800,
149 128
150 });
151
152 addPreset(m_ui.presetMP4, {
153 "MP4",
154 "h.264",
155 "AAC",
156 800,
157 128
158 });
159
160 if (m_nativeWidth && m_nativeHeight) {
161 addPreset(m_ui.presetLossless, {
162 "MKV",
163 "h.264",
164 "FLAC",
165 -1,
166 0,
167 { m_nativeWidth, m_nativeHeight }
168 });
169 }
170}
171
172VideoView::~VideoView() {
173 stopRecording();
174 free(m_audioCodecCstr);
175 free(m_videoCodecCstr);
176 free(m_containerCstr);
177}
178
179void VideoView::setController(std::shared_ptr<CoreController> controller) {
180 CoreController* controllerPtr = controller.get();
181 connect(controllerPtr, &CoreController::frameAvailable, this, [this, controllerPtr]() {
182 setNativeResolution(controllerPtr->screenDimensions());
183 });
184 connect(controllerPtr, &CoreController::stopping, this, &VideoView::stopRecording);
185 connect(this, &VideoView::recordingStarted, controllerPtr, &CoreController::setAVStream);
186 connect(this, &VideoView::recordingStopped, controllerPtr, &CoreController::clearAVStream, Qt::DirectConnection);
187
188 setNativeResolution(controllerPtr->screenDimensions());
189}
190
191void VideoView::startRecording() {
192 if (!validateSettings()) {
193 return;
194 }
195 if (!FFmpegEncoderOpen(&m_encoder, m_filename.toUtf8().constData())) {
196 LOG(QT, ERROR) << tr("Failed to open output video file: %1").arg(m_filename);
197 return;
198 }
199 m_ui.start->setEnabled(false);
200 m_ui.stop->setEnabled(true);
201 emit recordingStarted(&m_encoder.d);
202}
203
204void VideoView::stopRecording() {
205 emit recordingStopped();
206 FFmpegEncoderClose(&m_encoder);
207 m_ui.stop->setEnabled(false);
208 validateSettings();
209}
210
211void VideoView::setNativeResolution(const QSize& dims) {
212 if (dims.width() == m_nativeWidth && dims.height() == m_nativeHeight) {
213 return;
214 }
215 m_nativeWidth = dims.width();
216 m_nativeHeight = dims.height();
217 m_ui.presetNative->setText(tr("Native (%0x%1)").arg(m_nativeWidth).arg(m_nativeHeight));
218 QSize newSize = maintainAspect(QSize(m_width, m_height));
219 m_width = newSize.width();
220 m_height = newSize.height();
221 updateAspectRatio(m_nativeWidth, m_nativeHeight, false);
222 updatePresets();
223 for (auto iterator = m_presets.constBegin(); iterator != m_presets.constEnd(); ++iterator) {
224 if (iterator.key()->isChecked()) {
225 setPreset(*iterator);
226 break;
227 }
228 }
229}
230
231void VideoView::selectFile() {
232 QString filename = GBAApp::app()->getSaveFileName(this, tr("Select output file"));
233 if (!filename.isEmpty()) {
234 m_ui.filename->setText(filename);
235 }
236}
237
238void VideoView::setFilename(const QString& fname) {
239 m_filename = fname;
240 validateSettings();
241}
242
243void VideoView::setAudioCodec(const QString& codec, bool manual) {
244 free(m_audioCodecCstr);
245 m_audioCodec = sanitizeCodec(codec, s_acodecMap);
246 if (m_audioCodec == "none") {
247 m_audioCodecCstr = nullptr;
248 } else {
249 m_audioCodecCstr = strdup(m_audioCodec.toUtf8().constData());
250 }
251 if (!FFmpegEncoderSetAudio(&m_encoder, m_audioCodecCstr, m_abr)) {
252 free(m_audioCodecCstr);
253 m_audioCodecCstr = nullptr;
254 m_audioCodec = QString();
255 }
256 validateSettings();
257 if (manual) {
258 uncheckIncompatible();
259 }
260}
261
262void VideoView::setVideoCodec(const QString& codec, bool manual) {
263 free(m_videoCodecCstr);
264 m_videoCodec = sanitizeCodec(codec, s_vcodecMap);
265 if (m_videoCodec == "none") {
266 m_videoCodecCstr = nullptr;
267 } else {
268 m_videoCodecCstr = strdup(m_videoCodec.toUtf8().constData());
269 }
270 if (!FFmpegEncoderSetVideo(&m_encoder, m_videoCodecCstr, m_vbr, 0)) {
271 free(m_videoCodecCstr);
272 m_videoCodecCstr = nullptr;
273 m_videoCodec = QString();
274 }
275 validateSettings();
276 if (manual) {
277 uncheckIncompatible();
278 }
279}
280
281void VideoView::setContainer(const QString& container, bool manual) {
282 free(m_containerCstr);
283 m_container = sanitizeCodec(container, s_containerMap);
284 m_containerCstr = strdup(m_container.toUtf8().constData());
285 if (!FFmpegEncoderSetContainer(&m_encoder, m_containerCstr)) {
286 free(m_containerCstr);
287 m_containerCstr = nullptr;
288 m_container = QString();
289 }
290 validateSettings();
291 if (manual) {
292 uncheckIncompatible();
293 }
294}
295
296void VideoView::setAudioBitrate(int br, bool manual) {
297 m_abr = br * 1000;
298 FFmpegEncoderSetAudio(&m_encoder, m_audioCodecCstr, m_abr);
299 validateSettings();
300 if (manual) {
301 uncheckIncompatible();
302 }
303}
304
305void VideoView::setVideoBitrate(int br, bool manual) {
306 m_vbr = br >= 0 ? br * 1000 : 0;
307 FFmpegEncoderSetVideo(&m_encoder, m_videoCodecCstr, m_vbr, 0);
308 validateSettings();
309 if (manual) {
310 uncheckIncompatible();
311 }
312}
313
314void VideoView::setWidth(int width, bool manual) {
315 m_width = width;
316 updateAspectRatio(width, 0, false);
317 FFmpegEncoderSetDimensions(&m_encoder, m_width, m_height);
318 if (manual) {
319 uncheckIncompatible();
320 }
321}
322
323void VideoView::setHeight(int height, bool manual) {
324 m_height = height;
325 updateAspectRatio(0, height, false);
326 FFmpegEncoderSetDimensions(&m_encoder, m_width, m_height);
327 if (manual) {
328 uncheckIncompatible();
329 }
330}
331
332void VideoView::setAspectWidth(int, bool manual) {
333 updateAspectRatio(0, m_height, true);
334 FFmpegEncoderSetDimensions(&m_encoder, m_width, m_height);
335 if (manual) {
336 uncheckIncompatible();
337 }
338}
339
340void VideoView::setAspectHeight(int, bool manual) {
341 updateAspectRatio(m_width, 0, true);
342 FFmpegEncoderSetDimensions(&m_encoder, m_width, m_height);
343 if (manual) {
344 uncheckIncompatible();
345 }
346}
347
348void VideoView::showAdvanced(bool show) {
349 m_ui.advancedBox->setVisible(show);
350}
351
352bool VideoView::validateSettings() {
353 bool valid = !m_filename.isNull() && !FFmpegEncoderIsOpen(&m_encoder);
354 if (m_audioCodec.isNull()) {
355 valid = false;
356 m_ui.audio->setStyleSheet("QComboBox { color: red; }");
357 } else {
358 m_ui.audio->setStyleSheet("");
359 }
360
361 if (m_videoCodec.isNull()) {
362 valid = false;
363 m_ui.video->setStyleSheet("QComboBox { color: red; }");
364 } else {
365 m_ui.video->setStyleSheet("");
366 }
367
368 if (m_container.isNull()) {
369 valid = false;
370 m_ui.container->setStyleSheet("QComboBox { color: red; }");
371 } else {
372 m_ui.container->setStyleSheet("");
373 }
374
375 // This |valid| check is necessary as if one of the cstrs
376 // is null, the encoder likely has a dangling pointer
377 if (valid && !FFmpegEncoderVerifyContainer(&m_encoder)) {
378 valid = false;
379 }
380
381 m_ui.start->setEnabled(valid);
382
383 return valid;
384}
385
386void VideoView::updateAspectRatio(int width, int height, bool force) {
387 if (m_ui.lockRatio->isChecked() || force) {
388 if (width) {
389 height = m_ui.hratio->value() * width / m_ui.wratio->value();
390 } else if (height) {
391 width = m_ui.wratio->value() * height / m_ui.hratio->value();
392 }
393
394 m_width = width;
395 m_height = height;
396 safelySet(m_ui.width, m_width);
397 safelySet(m_ui.height, m_height);
398 } else {
399 int w = m_width;
400 int h = m_height;
401 reduceFraction(&h, &w);
402 safelySet(m_ui.wratio, w);
403 safelySet(m_ui.hratio, h);
404 }
405}
406
407void VideoView::uncheckIncompatible() {
408 Preset current = {
409 m_container,
410 m_videoCodec,
411 m_audioCodec,
412 m_vbr / 1000,
413 m_abr / 1000,
414 { m_width, m_height }
415 };
416
417 m_ui.presets->setExclusive(false);
418 m_ui.resolutions->setExclusive(false);
419 for (auto iterator = m_presets.constBegin(); iterator != m_presets.constEnd(); ++iterator) {
420 Preset next = *iterator;
421 next.container = sanitizeCodec(next.container, s_containerMap);
422 next.acodec = sanitizeCodec(next.acodec, s_acodecMap);
423 next.vcodec = sanitizeCodec(next.vcodec, s_vcodecMap);
424 if (!current.compatible(next)) {
425 safelyCheck(iterator.key(), false);
426 }
427 }
428 m_ui.presets->setExclusive(true);
429 m_ui.resolutions->setExclusive(true);
430
431 if (current.compatible(m_presets[m_ui.presetNative])) {
432 safelyCheck(m_ui.presetNative);
433 }
434 if (current.compatible(m_presets[m_ui.preset480])) {
435 safelyCheck(m_ui.preset480);
436 }
437 if (current.compatible(m_presets[m_ui.preset720])) {
438 safelyCheck(m_ui.preset720);
439 }
440 if (current.compatible(m_presets[m_ui.preset1080])) {
441 safelyCheck(m_ui.preset1080);
442 }
443}
444
445QString VideoView::sanitizeCodec(const QString& codec, const QMap<QString, QString>& mapping) {
446 QString sanitized = codec.toLower();
447 sanitized = sanitized.remove(QChar('.'));
448 sanitized = sanitized.remove(QChar('('));
449 sanitized = sanitized.remove(QChar(')'));
450 if (mapping.contains(sanitized)) {
451 sanitized = mapping[sanitized];
452 }
453 return sanitized;
454}
455
456void VideoView::safelyCheck(QAbstractButton* button, bool set) {
457 bool signalsBlocked = button->blockSignals(true);
458 bool autoExclusive = button->autoExclusive();
459 button->setAutoExclusive(false);
460 button->setChecked(set);
461 button->setAutoExclusive(autoExclusive);
462 button->blockSignals(signalsBlocked);
463}
464
465void VideoView::safelySet(QSpinBox* box, int value) {
466 bool signalsBlocked = box->blockSignals(true);
467 box->setValue(value);
468 box->blockSignals(signalsBlocked);
469}
470
471void VideoView::safelySet(QComboBox* box, const QString& value) {
472 bool signalsBlocked = box->blockSignals(true);
473 box->lineEdit()->setText(value);
474 box->blockSignals(signalsBlocked);
475}
476
477void VideoView::addPreset(QAbstractButton* button, const Preset& preset) {
478 m_presets[button] = preset;
479 button->disconnect();
480 connect(button, &QAbstractButton::pressed, [this, preset]() {
481 setPreset(preset);
482 });
483}
484
485void VideoView::setPreset(const Preset& preset) {
486 if (!preset.container.isNull()) {
487 setContainer(preset.container, false);
488 safelySet(m_ui.container, preset.container);
489 }
490 if (!preset.acodec.isNull()) {
491 setAudioCodec(preset.acodec, false);
492 safelySet(m_ui.audio, preset.acodec);
493 }
494 if (!preset.vcodec.isNull()) {
495 setVideoCodec(preset.vcodec, false);
496 safelySet(m_ui.video, preset.vcodec);
497 }
498 if (preset.abr) {
499 setAudioBitrate(preset.abr, false);
500 safelySet(m_ui.abr, preset.abr);
501 }
502 if (preset.vbr) {
503 setVideoBitrate(preset.vbr, false);
504 safelySet(m_ui.vbr, preset.vbr);
505 }
506 if (preset.dims.width() > 0) {
507 setWidth(preset.dims.width(), false);
508 safelySet(m_ui.width, preset.dims.width());
509 }
510 if (preset.dims.height() > 0) {
511 setHeight(preset.dims.height(), false);
512 safelySet(m_ui.height, preset.dims.height());
513 }
514
515 uncheckIncompatible();
516 validateSettings();
517}
518
519QSize VideoView::maintainAspect(const QSize& size) {
520 QSize ds = size;
521 if (ds.width() * m_nativeHeight > ds.height() * m_nativeWidth) {
522 ds.setWidth(ds.height() * m_nativeWidth / m_nativeHeight);
523 } else if (ds.width() * m_nativeHeight < ds.height() * m_nativeWidth) {
524 ds.setHeight(ds.width() * m_nativeHeight / m_nativeWidth);
525 }
526 return ds;
527}
528
529#endif