summaryrefslogtreecommitdiffstats
path: root/src/multimedia/video/qvideosurfaceformat.cpp
blob: 1fc13a602c1db82d190565394c5e179865e8e143 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtMultimedia module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qvideosurfaceformat.h"

#include <qdebug.h>
#include <qmetatype.h>
#include <qpair.h>
#include <qvariant.h>
#include <qvector.h>

QT_BEGIN_NAMESPACE

class QVideoSurfaceFormatPrivate : public QSharedData
{
public:
    QVideoSurfaceFormatPrivate()
        : pixelFormat(QVideoFrame::Format_Invalid)
        , handleType(QAbstractVideoBuffer::NoHandle)
        , scanLineDirection(QVideoSurfaceFormat::TopToBottom)
        , pixelAspectRatio(1, 1)
        , ycbcrColorSpace(QVideoSurfaceFormat::YCbCr_Undefined)
        , frameRate(0.0)
    {
    }

    QVideoSurfaceFormatPrivate(
            const QSize &size,
            QVideoFrame::PixelFormat format,
            QAbstractVideoBuffer::HandleType type)
        : pixelFormat(format)
        , handleType(type)
        , scanLineDirection(QVideoSurfaceFormat::TopToBottom)
        , frameSize(size)
        , pixelAspectRatio(1, 1)
        , ycbcrColorSpace(QVideoSurfaceFormat::YCbCr_Undefined)
        , viewport(QPoint(0, 0), size)
        , frameRate(0.0)
    {
    }

    QVideoSurfaceFormatPrivate(const QVideoSurfaceFormatPrivate &other)
        : QSharedData(other)
        , pixelFormat(other.pixelFormat)
        , handleType(other.handleType)
        , scanLineDirection(other.scanLineDirection)
        , frameSize(other.frameSize)
        , pixelAspectRatio(other.pixelAspectRatio)
        , ycbcrColorSpace(other.ycbcrColorSpace)
        , viewport(other.viewport)
        , frameRate(other.frameRate)
        , propertyNames(other.propertyNames)
        , propertyValues(other.propertyValues)
    {
    }

    bool operator ==(const QVideoSurfaceFormatPrivate &other) const
    {
        if (pixelFormat == other.pixelFormat
            && handleType == other.handleType
            && scanLineDirection == other.scanLineDirection
            && frameSize == other.frameSize
            && pixelAspectRatio == other.pixelAspectRatio
            && viewport == other.viewport
            && frameRatesEqual(frameRate, other.frameRate)
            && ycbcrColorSpace == other.ycbcrColorSpace
            && propertyNames.count() == other.propertyNames.count()) {
            for (int i = 0; i < propertyNames.count(); ++i) {
                int j = other.propertyNames.indexOf(propertyNames.at(i));

                if (j == -1 || propertyValues.at(i) != other.propertyValues.at(j))
                    return false;
            }
            return true;
        } else {
            return false;
        }
    }

    inline static bool frameRatesEqual(qreal r1, qreal r2)
    {
        return qAbs(r1 - r2) <= 0.00001 * qMin(qAbs(r1), qAbs(r2));
    }

    QVideoFrame::PixelFormat pixelFormat;
    QAbstractVideoBuffer::HandleType handleType;
    QVideoSurfaceFormat::Direction scanLineDirection;
    QSize frameSize;
    QSize pixelAspectRatio;
    QVideoSurfaceFormat::YCbCrColorSpace ycbcrColorSpace;
    QRect viewport;
    qreal frameRate;
    QList<QByteArray> propertyNames;
    QList<QVariant> propertyValues;
};

/*!
    \class QVideoSurfaceFormat
    \brief The QVideoSurfaceFormat class specifies the stream format of a video presentation
    surface.
    \since 4.6

    A video surface presents a stream of video frames.  The surface's format describes the type of
    the frames and determines how they should be presented.

    The core properties of a video stream required to setup a video surface are the pixel format
    given by pixelFormat(), and the frame dimensions given by frameSize().

    If the surface is to present frames using a frame's handle a surface format will also include
    a handle type which is given by the handleType() function.

    The region of a frame that is actually displayed on a video surface is given by the viewport().
    A stream may have a viewport less than the entire region of a frame to allow for videos smaller
    than the nearest optimal size of a video frame.  For example the width of a frame may be
    extended so that the start of each scan line is eight byte aligned.

    Other common properties are the pixelAspectRatio(), scanLineDirection(), and frameRate().
    Additionally a stream may have some additional type specific properties which are listed by the
    dynamicPropertyNames() function and can be accessed using the property(), and setProperty()
    functions.
*/

/*!
    \enum QVideoSurfaceFormat::Direction

    Enumerates the layout direction of video scan lines.

    \value TopToBottom Scan lines are arranged from the top of the frame to the bottom.
    \value BottomToTop Scan lines are arranged from the bottom of the frame to the top.
*/

/*! 
    \enum QVideoSurfaceFormat::YCbCrColorSpace
 
    Enumerates the Y'CbCr color space of video frames.
 
    \value YCbCr_Undefined
    No color space is specified.

    \value YCbCr_BT601
    A Y'CbCr color space defined by ITU-R recommendation BT.601
    with Y value range from 16 to 235, and Cb/Cr range from 16 to 240.
    Used in standard definition video.
 
    \value YCbCr_BT709
    A Y'CbCr color space defined by ITU-R BT.709 with the same values range as YCbCr_BT601.  Used
    for HDTV.
 
    \value YCbCr_xvYCC601
    The BT.601 color space with the value range extended to 0 to 255.
    It is backward compatibile with BT.601 and uses values outside BT.601 range to represent
    wider colors range.
 
    \value YCbCr_xvYCC709
    The BT.709 color space with the value range extended to 0 to 255.
 
    \value YCbCr_JPEG
    The full range Y'CbCr color space used in JPEG files.
*/

/*!
    Constructs a null video stream format.
*/

QVideoSurfaceFormat::QVideoSurfaceFormat()
    : d(new QVideoSurfaceFormatPrivate)
{
}

/*!
    Contructs a description of stream which receives stream of \a type buffers with given frame
    \a size and pixel \a format.
*/

QVideoSurfaceFormat::QVideoSurfaceFormat(
        const QSize& size, QVideoFrame::PixelFormat format, QAbstractVideoBuffer::HandleType type)
    : d(new QVideoSurfaceFormatPrivate(size, format, type))
{
}

/*!
    Constructs a copy of \a other.
*/

QVideoSurfaceFormat::QVideoSurfaceFormat(const QVideoSurfaceFormat &other)
    : d(other.d)
{
}

/*!
    Assigns the values of \a other to a video stream description.
*/

QVideoSurfaceFormat &QVideoSurfaceFormat::operator =(const QVideoSurfaceFormat &other)
{
    d = other.d;

    return *this;
}

/*!
    Destroys a video stream description.
*/

QVideoSurfaceFormat::~QVideoSurfaceFormat()
{
}

/*!
    Identifies if a video surface format has a valid pixel format and frame size.

    Returns true if the format is valid, and false otherwise.
*/

bool QVideoSurfaceFormat::isValid() const
{
    return d->pixelFormat == QVideoFrame::Format_Invalid && d->frameSize.isValid();
}

/*!
    Returns true if \a other is the same as a video format, and false if they are the different.
*/

bool QVideoSurfaceFormat::operator ==(const QVideoSurfaceFormat &other) const
{
    return d == other.d || *d == *other.d;
}

/*!
    Returns true if \a other is different to a video format, and false if they are the same.
*/

bool QVideoSurfaceFormat::operator !=(const QVideoSurfaceFormat &other) const
{
    return d != other.d && !(*d == *other.d);
}

/*!
    Returns the pixel format of frames in a video stream.
*/

QVideoFrame::PixelFormat QVideoSurfaceFormat::pixelFormat() const
{
    return d->pixelFormat;
}

/*!
    Returns the type of handle the surface uses to present the frame data.

    If the handle type is QAbstractVideoBuffer::NoHandle buffers with any handle type are valid
    provided they can be \l {QAbstractVideoBuffer::map()}{mapped} with the
    QAbstractVideoBuffer::ReadOnly flag.  If the handleType() is not QAbstractVideoBuffer::NoHandle
    then the handle type of the buffer be the same as that of the surface format.
*/

QAbstractVideoBuffer::HandleType QVideoSurfaceFormat::handleType() const
{
    return d->handleType;
}

/*!
    Returns the size of frames in a video stream.

    \sa frameWidth(), frameHeight()
*/

QSize QVideoSurfaceFormat::frameSize() const
{
    return d->frameSize;
}

/*!
    Returns the width of frames in a video stream.

    \sa frameSize(), frameHeight()
*/

int QVideoSurfaceFormat::frameWidth() const
{
    return d->frameSize.width();
}

/*!
    Returns the height of frame in a video stream.
*/

int QVideoSurfaceFormat::frameHeight() const
{
    return d->frameSize.height();
}

/*!
    Sets the size of frames in a video stream to \a size.

    This will reset the viewport() to fill the entire frame.
*/

void QVideoSurfaceFormat::setFrameSize(const QSize &size)
{
    d->frameSize = size;
    d->viewport = QRect(QPoint(0, 0), size);
}

/*!
    \overload

    Sets the \a width and \a height of frames in a video stream.

    This will reset the viewport() to fill the entire frame.
*/

void QVideoSurfaceFormat::setFrameSize(int width, int height)
{
    d->frameSize = QSize(width, height);
    d->viewport = QRect(0, 0, width, height);
}

/*!
    Returns the viewport of a video stream.

    The viewport is the region of a video frame that is actually displayed.

    By default the viewport covers an entire frame.
*/

QRect QVideoSurfaceFormat::viewport() const
{
    return d->viewport;
}

/*!
    Sets the viewport of a video stream to \a viewport.
*/

void QVideoSurfaceFormat::setViewport(const QRect &viewport)
{
    d->viewport = viewport;
}

/*!
    Returns the direction of scan lines.
*/

QVideoSurfaceFormat::Direction QVideoSurfaceFormat::scanLineDirection() const
{
    return d->scanLineDirection;
}

/*!
    Sets the \a direction of scan lines.
*/

void QVideoSurfaceFormat::setScanLineDirection(Direction direction)
{
    d->scanLineDirection = direction;
}

/*!
    Returns the frame rate of a video stream in frames per second.
*/

qreal QVideoSurfaceFormat::frameRate() const
{
    return d->frameRate;
}

/*!
    Sets the frame \a rate of a video stream in frames per second.
*/

void QVideoSurfaceFormat::setFrameRate(qreal rate)
{
    d->frameRate = rate;
}

/*!
    Returns a video stream's pixel aspect ratio.
*/

QSize QVideoSurfaceFormat::pixelAspectRatio() const
{
    return d->pixelAspectRatio;
}

/*!
    Sets a video stream's pixel aspect \a ratio.
*/

void QVideoSurfaceFormat::setPixelAspectRatio(const QSize &ratio)
{
    d->pixelAspectRatio = ratio;
}

/*!
    \overload

    Sets the \a horizontal and \a vertical elements of a video stream's pixel aspect ratio.
*/

void QVideoSurfaceFormat::setPixelAspectRatio(int horizontal, int vertical)
{
    d->pixelAspectRatio = QSize(horizontal, vertical);
}

/*!
    Returns the Y'CbCr color space of a video stream.
*/

QVideoSurfaceFormat::YCbCrColorSpace QVideoSurfaceFormat::yCbCrColorSpace() const
{
    return d->ycbcrColorSpace;
}

/*!
    Sets the Y'CbCr color \a space of a video stream.
    It is only used with raw YUV frame types.
*/

void QVideoSurfaceFormat::setYCbCrColorSpace(QVideoSurfaceFormat::YCbCrColorSpace space)
{
    d->ycbcrColorSpace = space;
}

/*!
    Returns a suggested size in pixels for the video stream.

    This is the size of the viewport scaled according to the pixel aspect ratio.
*/

QSize QVideoSurfaceFormat::sizeHint() const
{
    QSize size = d->viewport.size();

    if (d->pixelAspectRatio.height() != 0)
        size.setWidth(size.width() * d->pixelAspectRatio.width() / d->pixelAspectRatio.height());

    return size;
}

/*!
    Returns a list of video format dynamic property names.
*/

QList<QByteArray> QVideoSurfaceFormat::propertyNames() const
{
    return (QList<QByteArray>()
            << "handleType"
            << "pixelFormat"
            << "frameSize"
            << "frameWidth"
            << "viewport"
            << "scanLineDirection"
            << "frameRate"
            << "pixelAspectRatio"
            << "sizeHint"
            << "yCbCrColorSpace")
            + d->propertyNames;
}

/*!
    Returns the value of the video format's \a name property.
*/

QVariant QVideoSurfaceFormat::property(const char *name) const
{
    if (qstrcmp(name, "handleType") == 0) {
        return qVariantFromValue(d->handleType);
    } else if (qstrcmp(name, "pixelFormat") == 0) {
        return qVariantFromValue(d->pixelFormat);
    } else if (qstrcmp(name, "handleType") == 0) {
        return qVariantFromValue(d->handleType);
    } else if (qstrcmp(name, "frameSize") == 0) {
        return d->frameSize;
    } else if (qstrcmp(name, "frameWidth") == 0) {
        return d->frameSize.width();
    } else if (qstrcmp(name, "frameHeight") == 0) {
        return d->frameSize.height();
    } else if (qstrcmp(name, "viewport") == 0) {
        return d->viewport;
    } else if (qstrcmp(name, "scanLineDirection") == 0) {
        return qVariantFromValue(d->scanLineDirection);
    } else if (qstrcmp(name, "frameRate") == 0) {
        return qVariantFromValue(d->frameRate);
    } else if (qstrcmp(name, "pixelAspectRatio") == 0) {
        return qVariantFromValue(d->pixelAspectRatio);
    } else if (qstrcmp(name, "sizeHint") == 0) {
        return sizeHint();
    } else if (qstrcmp(name, "yCbCrColorSpace") == 0) {
        return qVariantFromValue(d->ycbcrColorSpace);
    } else {
        int id = 0;
        for (; id < d->propertyNames.count() && d->propertyNames.at(id) != name; ++id) {}

        return id < d->propertyValues.count()
                ? d->propertyValues.at(id)
                : QVariant();
    }
}

/*!
    Sets the video format's \a name property to \a value.
*/

void QVideoSurfaceFormat::setProperty(const char *name, const QVariant &value)
{
    if (qstrcmp(name, "handleType") == 0) {
        // read only.
    } else if (qstrcmp(name, "pixelFormat") == 0) {
        // read only.
    } else if (qstrcmp(name, "frameSize") == 0) {
        if (qVariantCanConvert<QSize>(value)) {
            d->frameSize = qvariant_cast<QSize>(value);
            d->viewport = QRect(QPoint(0, 0), d->frameSize);
        }
    } else if (qstrcmp(name, "frameWidth") == 0) {
        // read only.
    } else if (qstrcmp(name, "frameHeight") == 0) {
        // read only.
    } else if (qstrcmp(name, "viewport") == 0) {
        if (qVariantCanConvert<QRect>(value))
            d->viewport = qvariant_cast<QRect>(value);
    } else if (qstrcmp(name, "scanLineDirection") == 0) {
        if (qVariantCanConvert<Direction>(value))
            d->scanLineDirection = qvariant_cast<Direction>(value);
    } else if (qstrcmp(name, "frameRate") == 0) {
        if (qVariantCanConvert<qreal>(value))
            d->frameRate = qvariant_cast<qreal>(value);
    } else if (qstrcmp(name, "pixelAspectRatio") == 0) {
        if (qVariantCanConvert<QSize>(value))
            d->pixelAspectRatio = qvariant_cast<QSize>(value);
    } else if (qstrcmp(name, "sizeHint") == 0) {
        // read only.
    } else if (qstrcmp(name, "yCbCrColorSpace") == 0) {
          if (qVariantCanConvert<YCbCrColorSpace>(value))
              d->ycbcrColorSpace = qvariant_cast<YCbCrColorSpace>(value);
    } else {
        int id = 0;
        for (; id < d->propertyNames.count() && d->propertyNames.at(id) != name; ++id) {}

        if (id < d->propertyValues.count()) {
            if (value.isNull()) {
                d->propertyNames.removeAt(id);
                d->propertyValues.removeAt(id);
            } else {
                d->propertyValues[id] = value;
            }
        } else if (!value.isNull()) {
            d->propertyNames.append(QByteArray(name));
            d->propertyValues.append(value);
        }
    }
}


#ifndef QT_NO_DEBUG_STREAM
QDebug operator<<(QDebug dbg, const QVideoSurfaceFormat &f)
{
    QString typeName;
    switch (f.pixelFormat()) {
    case QVideoFrame::Format_Invalid:
        typeName = QLatin1String("Format_Invalid");
        break;
    case QVideoFrame::Format_ARGB32:
        typeName = QLatin1String("Format_ARGB32");
        break;
    case QVideoFrame::Format_ARGB32_Premultiplied:
        typeName = QLatin1String("Format_ARGB32_Premultiplied");
        break;
    case QVideoFrame::Format_RGB32:
        typeName = QLatin1String("Format_RGB32");
        break;
    case QVideoFrame::Format_RGB24:
        typeName = QLatin1String("Format_RGB24");
        break;
    case QVideoFrame::Format_RGB565:
        typeName = QLatin1String("Format_RGB565");
        break;
    case QVideoFrame::Format_RGB555:
        typeName = QLatin1String("Format_RGB555");
        break;
    case QVideoFrame::Format_ARGB8565_Premultiplied:
        typeName = QLatin1String("Format_ARGB8565_Premultiplied");
        break;
    case QVideoFrame::Format_BGRA32:
        typeName = QLatin1String("Format_BGRA32");
        break;
    case QVideoFrame::Format_BGRA32_Premultiplied:
        typeName = QLatin1String("Format_BGRA32_Premultiplied");
        break;
    case QVideoFrame::Format_BGR32:
        typeName = QLatin1String("Format_BGR32");
        break;
    case QVideoFrame::Format_BGR24:
        typeName = QLatin1String("Format_BGR24");
        break;
    case QVideoFrame::Format_BGR565:
        typeName = QLatin1String("Format_BGR565");
        break;
    case QVideoFrame::Format_BGR555:
        typeName = QLatin1String("Format_BGR555");
        break;
    case QVideoFrame::Format_BGRA5658_Premultiplied:
        typeName = QLatin1String("Format_BGRA5658_Premultiplied");
        break;
    case QVideoFrame::Format_AYUV444:
        typeName = QLatin1String("Format_AYUV444");
        break;
    case QVideoFrame::Format_AYUV444_Premultiplied:
        typeName = QLatin1String("Format_AYUV444_Premultiplied");
        break;
    case QVideoFrame::Format_YUV444:
        typeName = QLatin1String("Format_YUV444");
        break;
    case QVideoFrame::Format_YUV420P:
        typeName = QLatin1String("Format_YUV420P");
        break;
    case QVideoFrame::Format_YV12:
        typeName = QLatin1String("Format_YV12");
        break;
    case QVideoFrame::Format_UYVY:
        typeName = QLatin1String("Format_UYVY");
        break;
    case QVideoFrame::Format_YUYV:
        typeName = QLatin1String("Format_YUYV");
        break;
    case QVideoFrame::Format_NV12:
        typeName = QLatin1String("Format_NV12");
        break;
    case QVideoFrame::Format_NV21:
        typeName = QLatin1String("Format_NV21");
        break;
    case QVideoFrame::Format_IMC1:
        typeName = QLatin1String("Format_IMC1");
        break;
    case QVideoFrame::Format_IMC2:
        typeName = QLatin1String("Format_IMC2");
        break;
    case QVideoFrame::Format_IMC3:
        typeName = QLatin1String("Format_IMC3");
        break;
    case QVideoFrame::Format_IMC4:
        typeName = QLatin1String("Format_IMC4");
        break;
    case QVideoFrame::Format_Y8:
        typeName = QLatin1String("Format_Y8");
        break;
    case QVideoFrame::Format_Y16:
        typeName = QLatin1String("Format_Y16");
    default:
        typeName = QString(QLatin1String("UserType(%1)" )).arg(int(f.pixelFormat()));
    }

    dbg.nospace() << "QVideoSurfaceFormat(" << typeName;
    dbg.nospace() << ", " << f.frameSize();
    dbg.nospace() << ", viewport=" << f.viewport();
    dbg.nospace() << ", pixelAspectRatio=" << f.pixelAspectRatio();
    dbg.nospace() << ")";

    foreach(const QByteArray& propertyName, f.propertyNames())
        dbg << "\n    " << propertyName.data() << " = " << f.property(propertyName.data());

    return dbg.space();
}
#endif

QT_END_NAMESPACE