summaryrefslogtreecommitdiffstats
path: root/src/plugins/platforms/vnc/qvncserver.h
blob: c3042410f4db4f641a9f3f3661d7b9fbbbd45058 (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
/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QSCREENVNC_P_H
#define QSCREENVNC_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists for the convenience
// of the QLibrary class.  This header file may change from version to version
// without notice, or even be removed.
//
// We mean it.
//

#include "qvncintegration.h"
#include "qvnccursor.h"
#define QT_NO_QWS_CURSOR

#ifndef QT_NO_QWS_VNC

#include <QtCore/qvarlengtharray.h>
#include <QtCore/qsharedmemory.h>
#include <QtNetwork/qtcpsocket.h>
#include <QtNetwork/qtcpserver.h>

QT_BEGIN_NAMESPACE

class QVNCServer;

#ifndef QT_NO_QWS_CURSOR
class QVNCCursor : public QProxyScreenCursor
{
public:
    QVNCCursor(QVNCScreen *s);
    ~QVNCCursor();

    void hide();
    void show();
    void set(const QImage &image, int hotx, int hoty);
    void move(int x, int y);

private:
    void setDirty(const QRect &r) const;
    QVNCScreen *screen;
};

class QVNCClientCursor : public QProxyScreenCursor
{
public:
    QVNCClientCursor(QVNCServer *s);
    ~QVNCClientCursor();

    void set(const QImage &image, int hotx, int hoty);
    void write() const;

private:
    QVNCServer *server;
};
#endif // QT_NO_QWS_CURSOR

#define MAP_TILE_SIZE 16
#define MAP_WIDTH 1280 / MAP_TILE_SIZE
#define MAP_HEIGHT 1024 / MAP_TILE_SIZE

class QVNCDirtyMap
{
public:
    QVNCDirtyMap(QVNCScreen *screen);
    virtual ~QVNCDirtyMap();

    void reset();
    bool dirty(int x, int y) const;
    virtual void setDirty(int x, int y, bool force = false) = 0;
    void setClean(int x, int y);

    int bytesPerPixel;

    int numDirty;
    int mapWidth;
    int mapHeight;

protected:
    uchar *map;
    QVNCScreen *screen;
    uchar *buffer;
    int bufferWidth;
    int bufferHeight;
    int bufferStride;
    int numTiles;
};

template <class T>
class QVNCDirtyMapOptimized : public QVNCDirtyMap
{
public:
    QVNCDirtyMapOptimized(QVNCScreen *screen) : QVNCDirtyMap(screen) {}
    ~QVNCDirtyMapOptimized() {}

    void setDirty(int x, int y, bool force = false);
};

class QRfbRect
{
public:
    QRfbRect() {}
    QRfbRect(quint16 _x, quint16 _y, quint16 _w, quint16 _h) {
        x = _x; y = _y; w = _w; h = _h;
    }

    void read(QTcpSocket *s);
    void write(QTcpSocket *s) const;

    quint16 x;
    quint16 y;
    quint16 w;
    quint16 h;
};

class QRfbPixelFormat
{
public:
    static int size() { return 16; }

    void read(QTcpSocket *s);
    void write(QTcpSocket *s);

    int bitsPerPixel;
    int depth;
    bool bigEndian;
    bool trueColor;
    int redBits;
    int greenBits;
    int blueBits;
    int redShift;
    int greenShift;
    int blueShift;
};

class QRfbServerInit
{
public:
    QRfbServerInit() { name = 0; }
    ~QRfbServerInit() { delete[] name; }

    int size() const { return QRfbPixelFormat::size() + 8 + strlen(name); }
    void setName(const char *n);

    void read(QTcpSocket *s);
    void write(QTcpSocket *s);

    quint16 width;
    quint16 height;
    QRfbPixelFormat format;
    char *name;
};

class QRfbSetEncodings
{
public:
    bool read(QTcpSocket *s);

    quint16 count;
};

class QRfbFrameBufferUpdateRequest
{
public:
    bool read(QTcpSocket *s);

    char incremental;
    QRfbRect rect;
};

class QRfbKeyEvent
{
public:
    bool read(QTcpSocket *s);

    char down;
    int  keycode;
    int  unicode;
};

class QRfbPointerEvent
{
public:
    bool read(QTcpSocket *s);

    Qt::MouseButtons buttons;
    enum { WheelNone,
           WheelUp,
           WheelDown,
           WheelLeft,
           WheelRight
       } wheelDirection;
    quint16 x;
    quint16 y;
};

class QRfbClientCutText
{
public:
    bool read(QTcpSocket *s);

    quint32 length;
};

class QVNCScreenPrivate : public QObject
{
public:
    QVNCScreenPrivate(QVNCScreen *parent, int screenId);
    ~QVNCScreenPrivate();

    void setDirty(const QRect &rect, bool force = false);
    void configure();

    qreal dpiX;
    qreal dpiY;
    bool doOnScreenSurface;
    QVNCDirtyMap *dirty;
    int refreshRate;
    QVNCServer *vncServer;

#if !defined(QT_NO_QWS_MULTIPROCESS) && !defined(QT_NO_SHAREDMEMORY)
    QSharedMemory shm;
#endif

    QVNCScreen *q_ptr;
};

class QRfbEncoder
{
public:
    QRfbEncoder(QVNCServer *s) : server(s) {}
    virtual ~QRfbEncoder() {}

    virtual void write() = 0;

protected:
    QVNCServer *server;
};

class QRfbRawEncoder : public QRfbEncoder
{
public:
    QRfbRawEncoder(QVNCServer *s) : QRfbEncoder(s) {}

    void write();

private:
    QByteArray buffer;
};

template <class SRC> class QRfbHextileEncoder;

template <class SRC>
class QRfbSingleColorHextile
{
public:
    QRfbSingleColorHextile(QRfbHextileEncoder<SRC> *e) : encoder(e) {}
    bool read(const uchar *data, int width, int height, int stride);
    void write(QTcpSocket *socket) const;

private:
    QRfbHextileEncoder<SRC> *encoder;
};

template <class SRC>
class QRfbDualColorHextile
{
public:
    QRfbDualColorHextile(QRfbHextileEncoder<SRC> *e) : encoder(e) {}
    bool read(const uchar *data, int width, int height, int stride);
    void write(QTcpSocket *socket) const;

private:
    struct Rect {
        quint8 xy;
        quint8 wh;
    } Q_PACKED rects[8 * 16];

    quint8 numRects;
    QRfbHextileEncoder<SRC> *encoder;

private:
    inline int lastx() const { return rectx(numRects); }
    inline int lasty() const { return recty(numRects); }
    inline int rectx(int r) const { return rects[r].xy >> 4; }
    inline int recty(int r) const { return rects[r].xy & 0x0f; }
    inline int width(int r) const { return (rects[r].wh >> 4) + 1; }
    inline int height(int r) const { return (rects[r].wh & 0x0f) + 1; }

    inline void setX(int r, int x) {
        rects[r].xy = (x << 4) | (rects[r].xy & 0x0f);
    }
    inline void setY(int r, int y) {
        rects[r].xy = (rects[r].xy & 0xf0) | y;
    }
    inline void setWidth(int r, int width) {
        rects[r].wh = ((width - 1) << 4) | (rects[r].wh & 0x0f);
    }
    inline void setHeight(int r, int height) {
        rects[r].wh = (rects[r].wh & 0xf0) | (height - 1);
    }

    inline void setWidth(int width) { setWidth(numRects, width); }
    inline void setHeight(int height) { setHeight(numRects, height); }
    inline void setX(int x) { setX(numRects, x); }
    inline void setY(int y) { setY(numRects, y); }
    void next();
};

template <class SRC>
class QRfbMultiColorHextile
{
public:
    QRfbMultiColorHextile(QRfbHextileEncoder<SRC> *e) : encoder(e) {}
    bool read(const uchar *data, int width, int height, int stride);
    void write(QTcpSocket *socket) const;

private:
    inline quint8* rect(int r) {
        return rects.data() + r * (bpp + 2);
    }
    inline const quint8* rect(int r) const {
        return rects.constData() + r * (bpp + 2);
    }
    inline void setX(int r, int x) {
        quint8 *ptr = rect(r) + bpp;
        *ptr = (x << 4) | (*ptr & 0x0f);
    }
    inline void setY(int r, int y) {
        quint8 *ptr = rect(r) + bpp;
        *ptr = (*ptr & 0xf0) | y;
    }
    void setColor(SRC color);
    inline int rectx(int r) const {
        const quint8 *ptr = rect(r) + bpp;
        return *ptr >> 4;
    }
    inline int recty(int r) const {
        const quint8 *ptr = rect(r) + bpp;
        return *ptr & 0x0f;
    }
    inline void setWidth(int r, int width) {
        quint8 *ptr = rect(r) + bpp + 1;
        *ptr = ((width - 1) << 4) | (*ptr & 0x0f);
    }
    inline void setHeight(int r, int height) {
        quint8 *ptr = rect(r) + bpp + 1;
        *ptr = (*ptr & 0xf0) | (height - 1);
    }

    bool beginRect();
    void endRect();

    static const int maxRectsSize = 16 * 16;
    QVarLengthArray<quint8, maxRectsSize> rects;

    quint8 bpp;
    quint8 numRects;
    QRfbHextileEncoder<SRC> *encoder;
};

template <class SRC>
class QRfbHextileEncoder : public QRfbEncoder
{
public:
    QRfbHextileEncoder(QVNCServer *s);
    void write();

private:
    enum SubEncoding {
        Raw = 1,
        BackgroundSpecified = 2,
        ForegroundSpecified = 4,
        AnySubrects = 8,
        SubrectsColoured = 16
    };

    QByteArray buffer;
    QRfbSingleColorHextile<SRC> singleColorHextile;
    QRfbDualColorHextile<SRC> dualColorHextile;
    QRfbMultiColorHextile<SRC> multiColorHextile;

    SRC bg;
    SRC fg;
    bool newBg;
    bool newFg;

    friend class QRfbSingleColorHextile<SRC>;
    friend class QRfbDualColorHextile<SRC>;
    friend class QRfbMultiColorHextile<SRC>;
};

class QVNCServer : public QObject
{
    Q_OBJECT
public:
    QVNCServer(QVNCScreen *screen);
    QVNCServer(QVNCScreen *screen, int id);
    ~QVNCServer();

    void setDirty();
    void setDirtyCursor() { dirtyCursor = true; setDirty(); }
    inline bool isConnected() const { return state == Connected; }
    inline void setRefreshRate(int rate) { refreshRate = rate; }

    enum ClientMsg { SetPixelFormat = 0,
                     FixColourMapEntries = 1,
                     SetEncodings = 2,
                     FramebufferUpdateRequest = 3,
                     KeyEvent = 4,
                     PointerEvent = 5,
                     ClientCutText = 6 };

    enum ServerMsg { FramebufferUpdate = 0,
                     SetColourMapEntries = 1 };

    void convertPixels(char *dst, const char *src, int count) const;

    inline int clientBytesPerPixel() const {
        return pixelFormat.bitsPerPixel / 8;
    }

    inline QVNCScreen* screen() const { return qvnc_screen; }
    inline QVNCDirtyMap* dirtyMap() const { return qvnc_screen->dirtyMap(); }
    inline QTcpSocket* clientSocket() const { return client; }
    QImage *screenImage() const;
    inline bool doPixelConversion() const { return needConversion; }
#ifndef QT_NO_QWS_CURSOR
    inline bool hasClientCursor() const { return qvnc_cursor != 0; }
#endif

    void setCursor(QVNCCursor * c) { cursor = c; }
private:
    void setPixelFormat();
    void setEncodings();
    void frameBufferUpdateRequest();
    void pointerEvent();
    void keyEvent();
    void clientCutText();
    bool pixelConversionNeeded() const;

private slots:
    void newConnection();
    void readClient();
    void checkUpdate();
    void discardClient();

private:
    void init(uint port);
    enum ClientState { Unconnected, Protocol, Init, Connected };
    QTimer *timer;
    QTcpServer *serverSocket;
    QTcpSocket *client;
    ClientState state;
    quint8 msgType;
    bool handleMsg;
    QRfbPixelFormat pixelFormat;
    Qt::KeyboardModifiers keymod;
    Qt::MouseButtons buttons;
    int encodingsPending;
    int cutTextPending;
    uint supportCopyRect : 1;
    uint supportRRE : 1;
    uint supportCoRRE : 1;
    uint supportHextile : 1;
    uint supportZRLE : 1;
    uint supportCursor : 1;
    uint supportDesktopSize : 1;
    bool wantUpdate;
    bool sameEndian;
    bool needConversion;
#if Q_BYTE_ORDER == Q_BIG_ENDIAN
    bool swapBytes;
#endif
    bool dirtyCursor;
    int refreshRate;
    QVNCScreen *qvnc_screen;
#ifndef QT_NO_QWS_CURSOR
    QVNCClientCursor *qvnc_cursor;
#endif

    QRfbEncoder *encoder;
    QVNCCursor *cursor;
};


QT_END_NAMESPACE
#endif // QT_NO_QWS_VNC
#endif // QSCREENVNC_P_H