qpnghandler.cpp

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1-
2-
3-
4-
5class QPngHandlerPrivate-
6{-
7public:-
8 enum State {-
9 Ready,-
10 ReadHeader,-
11 ReadingEnd,-
12 Error-
13 };-
14-
15 QPngHandlerPrivate(QPngHandler *qq)-
16 : gamma(0.0), fileGamma(0.0), quality(2), png_ptr(0), info_ptr(0), end_info(0), state(Ready), q(qq)-
17 { }
never executed: end of block
0
18-
19 float gamma;-
20 float fileGamma;-
21 int quality;-
22 QString description;-
23 QSize scaledSize;-
24 QStringList readTexts;-
25-
26 png_struct *png_ptr;-
27 png_info *info_ptr;-
28 png_info *end_info;-
29-
30 bool readPngHeader();-
31 bool readPngImage(QImage *image);-
32 void readPngTexts(png_info *info);-
33-
34 QImage::Format readImageFormat();-
35-
36 struct AllocatedMemoryPointers {-
37 AllocatedMemoryPointers()-
38 : row_pointers(0), accRow(0), inRow(0), outRow(0)-
39 { }
never executed: end of block
0
40 void deallocate()-
41 {-
42 delete [] row_pointers;-
43 row_pointers = 0;-
44 delete [] accRow;-
45 accRow = 0;-
46 delete [] inRow;-
47 inRow = 0;-
48 delete [] outRow;-
49 outRow = 0;-
50 }
never executed: end of block
0
51-
52 png_byte **row_pointers;-
53 quint32 *accRow;-
54 png_byte *inRow;-
55 uchar *outRow;-
56 };-
57-
58 AllocatedMemoryPointers amp;-
59-
60 State state;-
61-
62 QPngHandler *q;-
63};-
64-
65-
66class QPNGImageWriter {-
67public:-
68 explicit QPNGImageWriter(QIODevice*);-
69 ~QPNGImageWriter();-
70-
71 enum DisposalMethod { Unspecified, NoDisposal, RestoreBackground, RestoreImage };-
72 void setDisposalMethod(DisposalMethod);-
73 void setLooping(int loops=0);-
74 void setFrameDelay(int msecs);-
75 void setGamma(float);-
76-
77 bool writeImage(const QImage& img, int x, int y);-
78 bool writeImage(const QImage& img, volatile int quality, const QString &description, int x, int y);-
79 bool writeImage(const QImage& img)-
80 { return
never executed: return writeImage(img, 0, 0);
 writeImage(img, 0, 0);
never executed: return writeImage(img, 0, 0);
 }		0
81 bool writeImage(const QImage& img, int quality, const QString &description)-
82 { return
never executed: return writeImage(img, quality, description, 0, 0);
 writeImage(img, quality, description, 0, 0);
never executed: return writeImage(img, quality, description, 0, 0);
 }		0
83-
84 QIODevice* device() { return
never executed: return dev;
 dev;
never executed: return dev;
 }		0
85-
86private:-
87 QIODevice* dev;-
88 int frames_written;-
89 DisposalMethod disposal;-
90 int looping;-
91 int ms_delay;-
92 float gamma;-
93};-
94-
95extern "C" {-
96static-
97void iod_read_fn(png_structp png_ptr, png_bytep data, png_size_t length)-
98{-
99 QPngHandlerPrivate *d = (QPngHandlerPrivate *)png_get_io_ptr(png_ptr);-
100 QIODevice *in = d->q->device();-
101-
102 if (d->state == QPngHandlerPrivate::ReadingEnd
d->state == QP...te::ReadingEndDescription
TRUEnever evaluated
FALSEnever evaluated
 && !in->isSequential()
!in->isSequential()Description
TRUEnever evaluated
FALSEnever evaluated
 && (
(in->size() - in->pos()) < 4Description
TRUEnever evaluated
FALSEnever evaluated
in->size() - in->pos()) < 4
(in->size() - in->pos()) < 4Description
TRUEnever evaluated
FALSEnever evaluated
 && length == 4
length == 4Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
103-
104 uchar endcrc[4] = { 0xae, 0x42, 0x60, 0x82 };-
105 memcpy(data, endcrc, 4);-
106 in->seek(in->size());-
107 return;
never executed: return;
0
108 }-
109-
110 while (length
lengthDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
111 int nr = in->read((char*)data, length);-
112 if (nr <= 0
nr <= 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
113 png_error(png_ptr, "Read Error");-
114 return;
never executed: return;
0
115 }-
116 length -= nr;-
117 }
never executed: end of block
0
118}
never executed: end of block
0
119-
120-
121static-
122void qpiw_write_fn(png_structp png_ptr, png_bytep data, png_size_t length)-
123{-
124 QPNGImageWriter* qpiw = (QPNGImageWriter*)png_get_io_ptr(png_ptr);-
125 QIODevice* out = qpiw->device();-
126-
127 uint nr = out->write((char*)data, length);-
128 if (nr != length
nr != lengthDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
129 png_error(png_ptr, "Write Error");-
130 return;
never executed: return;
0
131 }-
132}
never executed: end of block
0
133-
134-
135static-
136void qpiw_flush_fn(png_structp )-
137{-
138}-
139-
140}-
141-
142static-
143void setup_qt(QImage& image, png_structp png_ptr, png_infop info_ptr, QSize scaledSize, bool *doScaledRead, float screen_gamma=0.0, float file_gamma=0.0)-
144{-
145 if (screen_gamma != 0.0
screen_gamma != 0.0Description
TRUEnever evaluated
FALSEnever evaluated
 && file_gamma != 0.0
file_gamma != 0.0Description
TRUEnever evaluated
FALSEnever evaluated
)		0
146 png_set_gamma(png_ptr, 1.0f / screen_gamma, file_gamma);
never executed: png_set_gamma(png_ptr, 1.0f / screen_gamma, file_gamma);
0
147-
148 png_uint_32 width;-
149 png_uint_32 height;-
150 int bit_depth;-
151 int color_type;-
152 png_bytep trans_alpha = 0;-
153 png_color_16p trans_color_p = 0;-
154 int num_trans;-
155 png_colorp palette = 0;-
156 int num_palette;-
157 int interlace_method;-
158 png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, &interlace_method, 0, 0);-
159 png_set_interlace_handling(png_ptr);-
160-
161 if (color_type == 0
color_type == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
162-
163 if (bit_depth == 1
bit_depth == 1Description
TRUEnever evaluated
FALSEnever evaluated
 && png_get_channels(png_ptr, info_ptr) == 1
png_get_channe...info_ptr) == 1Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
164 png_set_invert_mono(png_ptr);-
165 png_read_update_info(png_ptr, info_ptr);-
166 if (image.size() != QSize(width, height)
image.size() !...width, height)Description
TRUEnever evaluated
FALSEnever evaluated
 || image.format() != QImage::Format_Mono
image.format()...e::Format_MonoDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
167 image = QImage(width, height, QImage::Format_Mono);-
168 if (image.isNull()
image.isNull()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
169 return;
never executed: return;
0
170 }
never executed: end of block
0
171 image.setColorCount(2);-
172 image.setColor(1, qRgb(0,0,0));-
173 image.setColor(0, qRgb(255,255,255));-
174 if (png_get_tRNS(png_ptr, info_ptr, &trans_alpha, &num_trans, &trans_color_p)
png_get_tRNS(p...trans_color_p)Description
TRUEnever evaluated
FALSEnever evaluated
 && trans_color_p
trans_color_pDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
175 const int g = trans_color_p->gray;-
176-
177-
178 if (g == 0
g == 0Description
TRUEnever evaluated
FALSEnever evaluated
)		0
179 image.setColor(1, qRgba(0, 0, 0, 0));
never executed: image.setColor(1, qRgba(0, 0, 0, 0));
0
180 else if (g == 1
g == 1Description
TRUEnever evaluated
FALSEnever evaluated
)		0
181 image.setColor(0, qRgba(255, 255, 255, 0));
never executed: image.setColor(0, qRgba(255, 255, 255, 0));
0
182 }
never executed: end of block
0
183 }
never executed: end of block
 else if (bit_depth == 16
bit_depth == 16Description
TRUEnever evaluated
FALSEnever evaluated
 && png_get_valid(png_ptr, info_ptr, 0x0010)
png_get_valid(...o_ptr, 0x0010)Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
184 png_set_expand(png_ptr);-
185 png_set_strip_16(png_ptr);-
186 png_set_gray_to_rgb(png_ptr);-
187 if (image.size() != QSize(width, height)
image.size() !...width, height)Description
TRUEnever evaluated
FALSEnever evaluated
 || image.format() != QImage::Format_ARGB32
image.format()...:Format_ARGB32Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
188 image = QImage(width, height, QImage::Format_ARGB32);-
189 if (image.isNull()
image.isNull()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
190 return;
never executed: return;
0
191 }
never executed: end of block
0
192 if (QSysInfo::ByteOrder == QSysInfo::BigEndian
QSysInfo::Byte...nfo::BigEndianDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
193 png_set_swap_alpha(png_ptr);
never executed: png_set_swap_alpha(png_ptr);
0
194-
195 png_read_update_info(png_ptr, info_ptr);-
196 }
never executed: end of block
 else if (bit_depth == 8
bit_depth == 8Description
TRUEnever evaluated
FALSEnever evaluated
 && !png_get_valid(png_ptr, info_ptr, 0x0010)
!png_get_valid...o_ptr, 0x0010)Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
197 png_set_expand(png_ptr);-
198 if (image.size() != QSize(width, height)
image.size() !...width, height)Description
TRUEnever evaluated
FALSEnever evaluated
 || image.format() != QImage::Format_Grayscale8
image.format()...mat_Grayscale8Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
199 image = QImage(width, height, QImage::Format_Grayscale8);-
200 if (image.isNull()
image.isNull()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
201 return;
never executed: return;
0
202 }
never executed: end of block
0
203-
204 png_read_update_info(png_ptr, info_ptr);-
205 }
never executed: end of block
 else {		0
206 if (bit_depth == 16
bit_depth == 16Description
TRUEnever evaluated
FALSEnever evaluated
)		0
207 png_set_strip_16(png_ptr);
never executed: png_set_strip_16(png_ptr);
0
208 else if (bit_depth < 8
bit_depth < 8Description
TRUEnever evaluated
FALSEnever evaluated
)		0
209 png_set_packing(png_ptr);
never executed: png_set_packing(png_ptr);
0
210 int ncols = bit_depth < 8
bit_depth < 8Description
TRUEnever evaluated
FALSEnever evaluated
 ? 1 << bit_depth : 256;		0
211 png_read_update_info(png_ptr, info_ptr);-
212 if (image.size() != QSize(width, height)
image.size() !...width, height)Description
TRUEnever evaluated
FALSEnever evaluated
 || image.format() != QImage::Format_Indexed8
image.format()...ormat_Indexed8Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
213 image = QImage(width, height, QImage::Format_Indexed8);-
214 if (image.isNull()
image.isNull()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
215 return;
never executed: return;
0
216 }
never executed: end of block
0
217 image.setColorCount(ncols);-
218 for (int i=0; i<ncols
i<ncolsDescription
TRUEnever evaluated
FALSEnever evaluated
; i++) {		0
219 int c = i*255/(ncols-1);-
220 image.setColor(i, qRgba(c,c,c,0xff));-
221 }
never executed: end of block
0
222 if (png_get_tRNS(png_ptr, info_ptr, &trans_alpha, &num_trans, &trans_color_p)
png_get_tRNS(p...trans_color_p)Description
TRUEnever evaluated
FALSEnever evaluated
 && trans_color_p
trans_color_pDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
223 const int g = trans_color_p->gray;-
224 if (g < ncols
g < ncolsDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
225 image.setColor(g, 0);-
226 }
never executed: end of block
0
227 }
never executed: end of block
0
228 }
never executed: end of block
0
229 } else if (color_type == (2 | 1)
color_type == (2 | 1)Description
TRUEnever evaluated
FALSEnever evaluated
0
230 && png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette)
png_get_PLTE(p... &num_palette)Description
TRUEnever evaluated
FALSEnever evaluated
0
231 && num_palette <= 256
num_palette <= 256Description
TRUEnever evaluated
FALSEnever evaluated
)		0
232 {-
233-
234 if (bit_depth != 1
bit_depth != 1Description
TRUEnever evaluated
FALSEnever evaluated
)		0
235 png_set_packing(png_ptr);
never executed: png_set_packing(png_ptr);
0
236 png_read_update_info(png_ptr, info_ptr);-
237 png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, 0, 0, 0);-
238 QImage::Format format = bit_depth == 1
bit_depth == 1Description
TRUEnever evaluated
FALSEnever evaluated
 ? QImage::Format_Mono : QImage::Format_Indexed8;		0
239 if (image.size() != QSize(width, height)
image.size() !...width, height)Description
TRUEnever evaluated
FALSEnever evaluated
 || image.format() != format
image.format() != formatDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
240 image = QImage(width, height, format);-
241 if (image.isNull()
image.isNull()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
242 return;
never executed: return;
0
243 }
never executed: end of block
0
244 png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette);-
245 image.setColorCount(num_palette);-
246 int i = 0;-
247 if (png_get_tRNS(png_ptr, info_ptr, &trans_alpha, &num_trans, &trans_color_p)
png_get_tRNS(p...trans_color_p)Description
TRUEnever evaluated
FALSEnever evaluated
 && trans_alpha
trans_alphaDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
248 while (i < num_trans
i < num_transDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
249 image.setColor(i, qRgba(-
250 palette[i].red,-
251 palette[i].green,-
252 palette[i].blue,-
253 trans_alpha[i]-
254 )-
255 );-
256 i++;-
257 }
never executed: end of block
0
258 }
never executed: end of block
0
259 while (i < num_palette
i < num_paletteDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
260 image.setColor(i, qRgba(-
261 palette[i].red,-
262 palette[i].green,-
263 palette[i].blue,-
264 0xff-
265 )-
266 );-
267 i++;-
268 }
never executed: end of block
0
269 }
never executed: end of block
 else {		0
270-
271 if (bit_depth == 16
bit_depth == 16Description
TRUEnever evaluated
FALSEnever evaluated
)		0
272 png_set_strip_16(png_ptr);
never executed: png_set_strip_16(png_ptr);
0
273-
274 png_set_expand(png_ptr);-
275-
276 if (color_type == (4)
color_type == (4)Description
TRUEnever evaluated
FALSEnever evaluated
)		0
277 png_set_gray_to_rgb(png_ptr);
never executed: png_set_gray_to_rgb(png_ptr);
0
278-
279 QImage::Format format = QImage::Format_ARGB32;-
280-
281 if (!(color_type & 4)
!(color_type & 4)Description
TRUEnever evaluated
FALSEnever evaluated
0
282 && !png_get_valid(png_ptr, info_ptr, 0x0010)
!png_get_valid...o_ptr, 0x0010)Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
283 png_set_filler(png_ptr, 0xff, QSysInfo::ByteOrder == QSysInfo::BigEndian ?-
284 0 : 1);-
285-
286 format = QImage::Format_RGB32;-
287 }
never executed: end of block
0
288 QSize outSize(width,height);-
289 if (!scaledSize.isEmpty()
!scaledSize.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
 && quint32(scaledSize.width()) <= width
quint32(scaled...th()) <= widthDescription
TRUEnever evaluated
FALSEnever evaluated
 &&		0
290 quint32(scaledSize.height()) <= height
quint32(scaled...t()) <= heightDescription
TRUEnever evaluated
FALSEnever evaluated
 && interlace_method == 0
interlace_method == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
291-
292 outSize = scaledSize;-
293 if (doScaledRead
doScaledReadDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
294 *
never executed: *doScaledRead = true;
doScaledRead = true;
never executed: *doScaledRead = true;
0
295 }
never executed: end of block
0
296 if (image.size() != outSize
image.size() != outSizeDescription
TRUEnever evaluated
FALSEnever evaluated
 || image.format() != format
image.format() != formatDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
297 image = QImage(outSize, format);-
298 if (image.isNull()
image.isNull()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
299 return;
never executed: return;
0
300 }
never executed: end of block
0
301-
302 if (QSysInfo::ByteOrder == QSysInfo::BigEndian
QSysInfo::Byte...nfo::BigEndianDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
303 png_set_swap_alpha(png_ptr);
never executed: png_set_swap_alpha(png_ptr);
0
304-
305 png_read_update_info(png_ptr, info_ptr);-
306 }
never executed: end of block
0
307-
308-
309 if (QSysInfo::ByteOrder == QSysInfo::LittleEndian
QSysInfo::Byte...::LittleEndianDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
310 png_set_bgr(png_ptr);-
311 }
never executed: end of block
0
312}
never executed: end of block
0
313-
314static void read_image_scaled(QImage *outImage, png_structp png_ptr, png_infop info_ptr,-
315 QPngHandlerPrivate::AllocatedMemoryPointers &amp, QSize scaledSize)-
316{-
317-
318 png_uint_32 width = 0;-
319 png_uint_32 height = 0;-
320 png_int_32 offset_x = 0;-
321 png_int_32 offset_y = 0;-
322-
323 int bit_depth = 0;-
324 int color_type = 0;-
325 int unit_type = 0;-
326 png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, 0, 0, 0);-
327 png_get_oFFs(png_ptr, info_ptr, &offset_x, &offset_y, &unit_type);-
328 uchar *data = outImage->bits();-
329 int bpl = outImage->bytesPerLine();-
330-
331 if (scaledSize.isEmpty()
scaledSize.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
 || !width
!widthDescription
TRUEnever evaluated
FALSEnever evaluated
 || !height
!heightDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
332 return;
never executed: return;
0
333-
334 const quint32 iysz = height;-
335 const quint32 ixsz = width;-
336 const quint32 oysz = scaledSize.height();-
337 const quint32 oxsz = scaledSize.width();-
338 const quint32 ibw = 4*width;-
339 amp.accRow = new quint32[ibw];-
340 memset(amp.accRow, 0, ibw*sizeof(quint32));-
341 amp.inRow = new png_byte[ibw];-
342 memset(amp.inRow, 0, ibw*sizeof(png_byte));-
343 amp.outRow = new uchar[ibw];-
344 memset(amp.outRow, 0, ibw*sizeof(uchar));-
345 qint32 rval = 0;-
346 for (quint32 oy=0; oy<oysz
oy<oyszDescription
TRUEnever evaluated
FALSEnever evaluated
; oy++) {		0
347-
348 for (quint32 i=0; i < ibw
i < ibwDescription
TRUEnever evaluated
FALSEnever evaluated
; i++)		0
349 amp.accRow[i] = rval*amp.inRow[i];
never executed: amp.accRow[i] = rval*amp.inRow[i];
0
350-
351 for (rval = iysz-rval; rval > 0
rval > 0Description
TRUEnever evaluated
FALSEnever evaluated
; rval-=oysz) {		0
352 png_read_row(png_ptr, amp.inRow, __null);-
353 quint32 fact = qMin(oysz, quint32(rval));-
354 for (quint32 i=0; i < ibw
i < ibwDescription
TRUEnever evaluated
FALSEnever evaluated
; i++)		0
355 amp.accRow[i] += fact*amp.inRow[i];
never executed: amp.accRow[i] += fact*amp.inRow[i];
0
356 }
never executed: end of block
0
357 rval *= -1;-
358-
359-
360 for (quint32 i=0; i < ibw
i < ibwDescription
TRUEnever evaluated
FALSEnever evaluated
; i++)		0
361 amp.outRow[i] = uchar(amp.accRow[i]/iysz);
never executed: amp.outRow[i] = uchar(amp.accRow[i]/iysz);
0
362-
363 quint32 a[4] = {0, 0, 0, 0};-
364 qint32 cval = oxsz;-
365 quint32 ix = 0;-
366 for (quint32 ox=0; ox<oxsz
ox<oxszDescription
TRUEnever evaluated
FALSEnever evaluated
; ox++) {		0
367 for (quint32 i=0; i < 4
i < 4Description
TRUEnever evaluated
FALSEnever evaluated
; i++)		0
368 a[i] = cval * amp.outRow[ix+i];
never executed: a[i] = cval * amp.outRow[ix+i];
0
369 for (cval = ixsz - cval; cval > 0
cval > 0Description
TRUEnever evaluated
FALSEnever evaluated
; cval-=oxsz) {		0
370 ix += 4;-
371 if (ix >= ibw
ix >= ibwDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
372 break;
never executed: break;
0
373 quint32 fact = qMin(oxsz, quint32(cval));-
374 for (quint32 i=0; i < 4
i < 4Description
TRUEnever evaluated
FALSEnever evaluated
; i++)		0
375 a[i] += fact * amp.outRow[ix+i];
never executed: a[i] += fact * amp.outRow[ix+i];
0
376 }
never executed: end of block
0
377 cval *= -1;-
378 for (quint32 i=0; i < 4
i < 4Description
TRUEnever evaluated
FALSEnever evaluated
; i++)		0
379 data[(4*ox)+i] = uchar(a[i]/ixsz);
never executed: data[(4*ox)+i] = uchar(a[i]/ixsz);
0
380 }
never executed: end of block
0
381 data += bpl;-
382 }
never executed: end of block
0
383 amp.deallocate();-
384-
385 outImage->setDotsPerMeterX((png_get_x_pixels_per_meter(png_ptr,info_ptr)*oxsz)/ixsz);-
386 outImage->setDotsPerMeterY((png_get_y_pixels_per_meter(png_ptr,info_ptr)*oysz)/iysz);-
387-
388 if (unit_type == 0
unit_type == 0Description
TRUEnever evaluated
FALSEnever evaluated
)		0
389 outImage->setOffset(QPoint(offset_x*oxsz/ixsz, offset_y*oysz/iysz));
never executed: outImage->setOffset(QPoint(offset_x*oxsz/ixsz, offset_y*oysz/iysz));
0
390-
391}
never executed: end of block
0
392-
393extern "C" {-
394static void qt_png_warning(png_structp , png_const_charp message)-
395{-
396 QMessageLogger(__FILE__, 486, __PRETTY_FUNCTION__).warning("libpng warning: %s", message);-
397}
never executed: end of block
0
398-
399}-
400-
401-
402void QPngHandlerPrivate::readPngTexts(png_info *info)-
403{-
404 png_textp text_ptr;-
405 int num_text=0;-
406 png_get_text(png_ptr, info, &text_ptr, &num_text);-
407-
408 while (num_text--
num_text--Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
409 QString key, value;-
410 key = QString::fromLatin1(text_ptr->key);-
411-
412-
413-
414-
415-
416 {-
417 value = QString::fromLatin1(text_ptr->text, int(text_ptr->text_length));-
418 }-
419 if (!description.isEmpty()
!description.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
420 description += QLatin1String("\n\n");
never executed: description += QLatin1String("\n\n");
0
421 description += key + QLatin1String(": ") + value.simplified();-
422 readTexts.append(key);-
423 readTexts.append(value);-
424 text_ptr++;-
425 }
never executed: end of block
0
426}
never executed: end of block
0
427-
428-
429bool QPngHandlerPrivate::readPngHeader()-
430{-
431 state = Error;-
432 png_ptr = png_create_read_struct("1.2.50",0,0,0);-
433 if (!png_ptr
!png_ptrDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
434 return
never executed: return false;
 false;
never executed: return false;
0
435-
436 png_set_error_fn(png_ptr, 0, 0, qt_png_warning);-
437-
438-
439-
440-
441-
442-
443-
444 info_ptr = png_create_info_struct(png_ptr);-
445 if (!info_ptr
!info_ptrDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
446 png_destroy_read_struct(&png_ptr, 0, 0);-
447 png_ptr = 0;-
448 return
never executed: return false;
 false;
never executed: return false;
0
449 }-
450-
451 end_info = png_create_info_struct(png_ptr);-
452 if (!end_info
!end_infoDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
453 png_destroy_read_struct(&png_ptr, &info_ptr, 0);-
454 png_ptr = 0;-
455 return
never executed: return false;
 false;
never executed: return false;
0
456 }-
457-
458 if (_setjmp (((png_ptr)->jmpbuf))
_setjmp (((png_ptr)->jmpbuf))Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
459 png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);-
460 png_ptr = 0;-
461 return
never executed: return false;
 false;
never executed: return false;
0
462 }-
463-
464 png_set_read_fn(png_ptr, this, iod_read_fn);-
465 png_read_info(png_ptr, info_ptr);-
466-
467 readPngTexts(info_ptr);-
468-
469 if (png_get_valid(png_ptr, info_ptr, 0x0001)
png_get_valid(...o_ptr, 0x0001)Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
470 double file_gamma = 0.0;-
471 png_get_gAMA(png_ptr, info_ptr, &file_gamma);-
472 fileGamma = file_gamma;-
473 }
never executed: end of block
0
474-
475 state = ReadHeader;-
476 return
never executed: return true;
 true;
never executed: return true;
0
477}-
478-
479bool QPngHandlerPrivate::readPngImage(QImage *outImage)-
480{-
481 if (state == Error
state == ErrorDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
482 return
never executed: return false;
 false;
never executed: return false;
0
483-
484 if (state == Ready
state == ReadyDescription
TRUEnever evaluated
FALSEnever evaluated
 && !readPngHeader()
!readPngHeader()Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
485 state = Error;-
486 return
never executed: return false;
 false;
never executed: return false;
0
487 }-
488-
489 if (_setjmp (((png_ptr)->jmpbuf))
_setjmp (((png_ptr)->jmpbuf))Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
490 png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);-
491 png_ptr = 0;-
492 amp.deallocate();-
493 state = Error;-
494 return
never executed: return false;
 false;
never executed: return false;
0
495 }-
496-
497 bool doScaledRead = false;-
498 setup_qt(*outImage, png_ptr, info_ptr, scaledSize, &doScaledRead, gamma, fileGamma);-
499-
500 if (outImage->isNull()
outImage->isNull()Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
501 png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);-
502 png_ptr = 0;-
503 amp.deallocate();-
504 state = Error;-
505 return
never executed: return false;
 false;
never executed: return false;
0
506 }-
507-
508 if (doScaledRead
doScaledReadDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
509 read_image_scaled(outImage, png_ptr, info_ptr, amp, scaledSize);-
510 }
never executed: end of block
 else {		0
511 png_uint_32 width = 0;-
512 png_uint_32 height = 0;-
513 png_int_32 offset_x = 0;-
514 png_int_32 offset_y = 0;-
515-
516 int bit_depth = 0;-
517 int color_type = 0;-
518 int unit_type = 0;-
519 png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, 0, 0, 0);-
520 png_get_oFFs(png_ptr, info_ptr, &offset_x, &offset_y, &unit_type);-
521 uchar *data = outImage->bits();-
522 int bpl = outImage->bytesPerLine();-
523 amp.row_pointers = new png_bytep[height];-
524-
525 for (uint y = 0; y < height
y < heightDescription
TRUEnever evaluated
FALSEnever evaluated
; y++)		0
526 amp.row_pointers[y] = data + y * bpl;
never executed: amp.row_pointers[y] = data + y * bpl;
0
527-
528 png_read_image(png_ptr, amp.row_pointers);-
529 amp.deallocate();-
530-
531 outImage->setDotsPerMeterX(png_get_x_pixels_per_meter(png_ptr,info_ptr));-
532 outImage->setDotsPerMeterY(png_get_y_pixels_per_meter(png_ptr,info_ptr));-
533-
534 if (unit_type == 0
unit_type == 0Description
TRUEnever evaluated
FALSEnever evaluated
)		0
535 outImage->setOffset(QPoint(offset_x, offset_y));
never executed: outImage->setOffset(QPoint(offset_x, offset_y));
0
536-
537-
538 if (color_type == (2 | 1)
color_type == (2 | 1)Description
TRUEnever evaluated
FALSEnever evaluated
 && outImage->format() == QImage::Format_Indexed8
outImage->form...ormat_Indexed8Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
539 int color_table_size = outImage->colorCount();-
540 for (int y=0; y<(int)height
y<(int)heightDescription
TRUEnever evaluated
FALSEnever evaluated
; ++y) {		0
541 uchar *p = (data + (y) * bpl);-
542 uchar *end = p + width;-
543 while (p < end
p < endDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
544 if (*
*p >= color_table_sizeDescription
TRUEnever evaluated
FALSEnever evaluated
p >= color_table_size
*p >= color_table_sizeDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
545 *
never executed: *p = 0;
p = 0;
never executed: *p = 0;
0
546 ++p;-
547 }
never executed: end of block
0
548 }
never executed: end of block
0
549 }
never executed: end of block
0
550 }
never executed: end of block
0
551-
552 state = ReadingEnd;-
553 png_read_end(png_ptr, end_info);-
554-
555 readPngTexts(end_info);-
556 for (int i = 0; i < readTexts.size()-1
i < readTexts.size()-1Description
TRUEnever evaluated
FALSEnever evaluated
; i+=2)		0
557 outImage->setText(readTexts.at(i), readTexts.at(i+1));
never executed: outImage->setText(readTexts.at(i), readTexts.at(i+1));
0
558-
559 png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);-
560 png_ptr = 0;-
561 amp.deallocate();-
562 state = Ready;-
563-
564 if (scaledSize.isValid()
scaledSize.isValid()Description
TRUEnever evaluated
FALSEnever evaluated
 && outImage->size() != scaledSize
outImage->size() != scaledSizeDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
565 *
never executed: *outImage = outImage->scaled(scaledSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
outImage = outImage->scaled(scaledSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
never executed: *outImage = outImage->scaled(scaledSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
0
566-
567 return
never executed: return true;
 true;
never executed: return true;
0
568}-
569-
570QImage::Format QPngHandlerPrivate::readImageFormat()-
571{-
572 QImage::Format format = QImage::Format_Invalid;-
573 png_uint_32 width, height;-
574 int bit_depth, color_type;-
575 png_colorp palette;-
576 int num_palette;-
577 png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, 0, 0, 0);-
578 if (color_type == 0
color_type == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
579-
580 if (bit_depth == 1
bit_depth == 1Description
TRUEnever evaluated
FALSEnever evaluated
 && png_get_channels(png_ptr, info_ptr) == 1
png_get_channe...info_ptr) == 1Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
581 format = QImage::Format_Mono;-
582 }
never executed: end of block
 else if (bit_depth == 16
bit_depth == 16Description
TRUEnever evaluated
FALSEnever evaluated
 && png_get_valid(png_ptr, info_ptr, 0x0010)
png_get_valid(...o_ptr, 0x0010)Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
583 format = QImage::Format_ARGB32;-
584 }
never executed: end of block
 else if (bit_depth == 8
bit_depth == 8Description
TRUEnever evaluated
FALSEnever evaluated
 && !png_get_valid(png_ptr, info_ptr, 0x0010)
!png_get_valid...o_ptr, 0x0010)Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
585 format = QImage::Format_Grayscale8;-
586 }
never executed: end of block
 else {		0
587 format = QImage::Format_Indexed8;-
588 }
never executed: end of block
0
589 } else if (color_type == (2 | 1)
color_type == (2 | 1)Description
TRUEnever evaluated
FALSEnever evaluated
0
590 && png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette)
png_get_PLTE(p... &num_palette)Description
TRUEnever evaluated
FALSEnever evaluated
0
591 && num_palette <= 256
num_palette <= 256Description
TRUEnever evaluated
FALSEnever evaluated
)		0
592 {-
593-
594 format = bit_depth == 1
bit_depth == 1Description
TRUEnever evaluated
FALSEnever evaluated
 ? QImage::Format_Mono : QImage::Format_Indexed8;		0
595 }
never executed: end of block
 else {		0
596-
597 format = QImage::Format_ARGB32;-
598-
599 if (!(color_type & 4)
!(color_type & 4)Description
TRUEnever evaluated
FALSEnever evaluated
0
600 && !png_get_valid(png_ptr, info_ptr, 0x0010)
!png_get_valid...o_ptr, 0x0010)Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
601-
602 format = QImage::Format_RGB32;-
603 }
never executed: end of block
0
604 }
never executed: end of block
0
605-
606 return
never executed: return format;
 format;
never executed: return format;
0
607}-
608-
609QPNGImageWriter::QPNGImageWriter(QIODevice* iod) :-
610 dev(iod),-
611 frames_written(0),-
612 disposal(Unspecified),-
613 looping(-1),-
614 ms_delay(-1),-
615 gamma(0.0)-
616{-
617}
never executed: end of block
0
618-
619QPNGImageWriter::~QPNGImageWriter()-
620{-
621}-
622-
623void QPNGImageWriter::setDisposalMethod(DisposalMethod dm)-
624{-
625 disposal = dm;-
626}
never executed: end of block
0
627-
628void QPNGImageWriter::setLooping(int loops)-
629{-
630 looping = loops;-
631}
never executed: end of block
0
632-
633void QPNGImageWriter::setFrameDelay(int msecs)-
634{-
635 ms_delay = msecs;-
636}
never executed: end of block
0
637-
638void QPNGImageWriter::setGamma(float g)-
639{-
640 gamma = g;-
641}
never executed: end of block
0
642-
643-
644static void set_text(const QImage &image, png_structp png_ptr, png_infop info_ptr,-
645 const QString &description)-
646{-
647 QMap<QString, QString> text;-
648 for (QForeachContainer<typename QtPrivate::remove_reference<decltype(image.textKeys())>::type> _container_((image.textKeys())); _container_.control && _container_.i != _container_.e; ++_container_.i, _container_.control ^= 1) for (const QString &key = *_container_.i; _container_.control; _container_.control = 0) {-
649 if (!key.isEmpty()
!key.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
650 text.insert(key, image.text(key));
never executed: text.insert(key, image.text(key));
0
651 }
never executed: end of block
0
652 for (QForeachContainer<typename QtPrivate::remove_reference<decltype(description.split(QLatin1String("\n\n")))>::type> _container_((description.split(QLatin1String("\n\n")))); _container_.control && _container_.i != _container_.e; ++_container_.i, _container_.control ^= 1) for (const QString &pair = *_container_.i; _container_.control; _container_.control = 0) {-
653 int index = pair.indexOf(QLatin1Char(':'));-
654 if (index >= 0
index >= 0Description
TRUEnever evaluated
FALSEnever evaluated
 && pair.indexOf(QLatin1Char(' ')) < index
pair.indexOf(Q...(' ')) < indexDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
655 QString s = pair.simplified();-
656 if (!s.isEmpty()
!s.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
657 text.insert(QLatin1String("Description"), s);
never executed: text.insert(QLatin1String("Description"), s);
0
658 }
never executed: end of block
 else {		0
659 QString key = pair.left(index);-
660 if (!key.simplified().isEmpty()
!key.simplified().isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
661 text.insert(key, pair.mid(index + 2).simplified());
never executed: text.insert(key, pair.mid(index + 2).simplified());
0
662 }
never executed: end of block
0
663 }-
664-
665 if (text.isEmpty()
text.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
666 return;
never executed: return;
0
667-
668 png_textp text_ptr = new png_text[text.size()];-
669 memset(text_ptr, 0, text.size() * sizeof(png_text));-
670-
671 QMap<QString, QString>::ConstIterator it = text.constBegin();-
672 int i = 0;-
673 while (it != text.constEnd()
it != text.constEnd()Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
674 text_ptr[i].key = qstrdup(it.key().left(79).toLatin1().constData());-
675 bool noCompress = (it.value().length() < 40);-
676 {-
677 text_ptr[i].compression = noCompress
noCompressDescription
TRUEnever evaluated
FALSEnever evaluated
 ? -1 : 0;		0
678 QByteArray value = it.value().toLatin1();-
679 text_ptr[i].text = qstrdup(value.constData());-
680 text_ptr[i].text_length = value.size();-
681 }-
682 ++i;-
683 ++it;-
684 }
never executed: end of block
0
685-
686 png_set_text(png_ptr, info_ptr, text_ptr, i);-
687 for (i = 0; i < text.size()
i < text.size()Description
TRUEnever evaluated
FALSEnever evaluated
; ++i) {		0
688 delete [] text_ptr[i].key;-
689 delete [] text_ptr[i].text;-
690-
691-
692-
693 }
never executed: end of block
0
694 delete [] text_ptr;-
695}
never executed: end of block
0
696-
697bool QPNGImageWriter::writeImage(const QImage& image, int off_x, int off_y)-
698{-
699 return
never executed: return writeImage(image, -1, QString(), off_x, off_y);
 writeImage(image, -1, QString(), off_x, off_y);
never executed: return writeImage(image, -1, QString(), off_x, off_y);
0
700}-
701-
702bool QPNGImageWriter::writeImage(const QImage& image, volatile int quality_in, const QString &description,-
703 int off_x_in, int off_y_in)-
704{-
705 QPoint offset = image.offset();-
706 int off_x = off_x_in + offset.x();-
707 int off_y = off_y_in + offset.y();-
708-
709 png_structp png_ptr;-
710 png_infop info_ptr;-
711-
712 png_ptr = png_create_write_struct("1.2.50",0,0,0);-
713 if (!png_ptr
!png_ptrDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
714 return
never executed: return false;
 false;
never executed: return false;
0
715 }-
716-
717 png_set_error_fn(png_ptr, 0, 0, qt_png_warning);-
718-
719 info_ptr = png_create_info_struct(png_ptr);-
720 if (!info_ptr
!info_ptrDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
721 png_destroy_write_struct(&png_ptr, 0);-
722 return
never executed: return false;
 false;
never executed: return false;
0
723 }-
724-
725 if (_setjmp (((png_ptr)->jmpbuf))
_setjmp (((png_ptr)->jmpbuf))Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
726 png_destroy_write_struct(&png_ptr, &info_ptr);-
727 return
never executed: return false;
 false;
never executed: return false;
0
728 }-
729-
730 int quality = quality_in;-
731 if (quality >= 0
quality >= 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
732 if (quality > 9
quality > 9Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
733 QMessageLogger(__FILE__, 844, __PRETTY_FUNCTION__).warning("PNG: Quality %d out of range", quality);-
734 quality = 9;-
735 }
never executed: end of block
0
736 png_set_compression_level(png_ptr, quality);-
737 }
never executed: end of block
0
738-
739 png_set_write_fn(png_ptr, (void*)this, qpiw_write_fn, qpiw_flush_fn);-
740-
741-
742 int color_type = 0;-
743 if (image.colorCount()
image.colorCount()Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
744 if (image.isGrayscale()
image.isGrayscale()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
745 color_type = 0;
never executed: color_type = 0;
0
746 else-
747 color_type = (2 | 1);
never executed: color_type = (2 | 1);
0
748 }-
749 else if (image.format() == QImage::Format_Grayscale8
image.format()...mat_Grayscale8Description
TRUEnever evaluated
FALSEnever evaluated
)		0
750 color_type = 0;
never executed: color_type = 0;
0
751 else if (image.hasAlphaChannel()
image.hasAlphaChannel()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
752 color_type = (2 | 4);
never executed: color_type = (2 | 4);
0
753 else-
754 color_type = (2);
never executed: color_type = (2);
0
755-
756 png_set_IHDR(png_ptr, info_ptr, image.width(), image.height(),-
757 image.depth() == 1 ? 1 : 8,-
758 color_type, 0, 0, 0);-
759-
760 if (gamma != 0.0
gamma != 0.0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
761 png_set_gAMA(png_ptr, info_ptr, 1.0/gamma);-
762 }
never executed: end of block
0
763-
764 if (image.format() == QImage::Format_MonoLSB
image.format()...Format_MonoLSBDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
765 png_set_packswap(png_ptr);
never executed: png_set_packswap(png_ptr);
0
766-
767 if (color_type == (2 | 1)
color_type == (2 | 1)Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
768-
769 int num_palette = qMin(256, image.colorCount());-
770 png_color palette[256];-
771 png_byte trans[256];-
772 int num_trans = 0;-
773 for (int i=0; i<num_palette
i<num_paletteDescription
TRUEnever evaluated
FALSEnever evaluated
; i++) {		0
774 QRgb rgba=image.color(i);-
775 palette[i].red = qRed(rgba);-
776 palette[i].green = qGreen(rgba);-
777 palette[i].blue = qBlue(rgba);-
778 trans[i] = qAlpha(rgba);-
779 if (trans[i] < 255
trans[i] < 255Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
780 num_trans = i+1;-
781 }
never executed: end of block
0
782 }
never executed: end of block
0
783 png_set_PLTE(png_ptr, info_ptr, palette, num_palette);-
784-
785 if (num_trans
num_transDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
786 png_set_tRNS(png_ptr, info_ptr, trans, num_trans, 0);-
787 }
never executed: end of block
0
788 }
never executed: end of block
0
789-
790-
791-
792 if (QSysInfo::ByteOrder == QSysInfo::BigEndian
QSysInfo::Byte...nfo::BigEndianDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
793 png_set_swap_alpha(png_ptr);-
794 }
never executed: end of block
0
795-
796-
797 if (QSysInfo::ByteOrder == QSysInfo::LittleEndian
QSysInfo::Byte...::LittleEndianDescription
TRUEnever evaluated
FALSEnever evaluated
0
798 && image.format() != QImage::Format_RGB888
image.format()...:Format_RGB888Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
799 png_set_bgr(png_ptr);-
800 }
never executed: end of block
0
801-
802 if (off_x
off_xDescription
TRUEnever evaluated
FALSEnever evaluated
 || off_y
off_yDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
803 png_set_oFFs(png_ptr, info_ptr, off_x, off_y, 0);-
804 }
never executed: end of block
0
805-
806 if (frames_written > 0
frames_written > 0Description
TRUEnever evaluated
FALSEnever evaluated
)		0
807 png_set_sig_bytes(png_ptr, 8);
never executed: png_set_sig_bytes(png_ptr, 8);
0
808-
809 if (image.dotsPerMeterX() > 0
image.dotsPerMeterX() > 0Description
TRUEnever evaluated
FALSEnever evaluated
 || image.dotsPerMeterY() > 0
image.dotsPerMeterY() > 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
810 png_set_pHYs(png_ptr, info_ptr,-
811 image.dotsPerMeterX(), image.dotsPerMeterY(),-
812 1);-
813 }
never executed: end of block
0
814-
815 set_text(image, png_ptr, info_ptr, description);-
816-
817 png_write_info(png_ptr, info_ptr);-
818-
819 if (image.depth() != 1
image.depth() != 1Description
TRUEnever evaluated
FALSEnever evaluated
)		0
820 png_set_packing(png_ptr);
never executed: png_set_packing(png_ptr);
0
821-
822 if (color_type == (2)
color_type == (2)Description
TRUEnever evaluated
FALSEnever evaluated
 && image.format() != QImage::Format_RGB888
image.format()...:Format_RGB888Description
TRUEnever evaluated
FALSEnever evaluated
)		0
823 png_set_filler(png_ptr, 0,
never executed: png_set_filler(png_ptr, 0, QSysInfo::ByteOrder == QSysInfo::BigEndian ? 0 : 1);
0
824 QSysInfo::ByteOrder == QSysInfo::BigEndian ?
never executed: png_set_filler(png_ptr, 0, QSysInfo::ByteOrder == QSysInfo::BigEndian ? 0 : 1);
0
825 0 : 1);
never executed: png_set_filler(png_ptr, 0, QSysInfo::ByteOrder == QSysInfo::BigEndian ? 0 : 1);
0
826-
827 if (looping >= 0
looping >= 0Description
TRUEnever evaluated
FALSEnever evaluated
 && frames_written == 0
frames_written == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
828 uchar data[13] = "NETSCAPE2.0";-
829-
830 data[0xB] = looping%0x100;-
831 data[0xC] = looping/0x100;-
832 png_write_chunk(png_ptr, const_cast<png_bytep>((const png_byte *)"gIFx"), data, 13);-
833 }
never executed: end of block
0
834 if (ms_delay >= 0
ms_delay >= 0Description
TRUEnever evaluated
FALSEnever evaluated
 || disposal!=Unspecified
disposal!=UnspecifiedDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
835 uchar data[4];-
836 data[0] = disposal;-
837 data[1] = 0;-
838 data[2] = (ms_delay/10)/0x100;-
839 data[3] = (ms_delay/10)%0x100;-
840 png_write_chunk(png_ptr, const_cast<png_bytep>((const png_byte *)"gIFg"), data, 4);-
841 }
never executed: end of block
0
842-
843 int height = image.height();-
844 int width = image.width();-
845 switch (image.format()) {-
846 case
never executed: case QImage::Format_Mono:
 QImage::Format_Mono:
never executed: case QImage::Format_Mono:
0
847 case
never executed: case QImage::Format_MonoLSB:
 QImage::Format_MonoLSB:
never executed: case QImage::Format_MonoLSB:
0
848 case
never executed: case QImage::Format_Indexed8:
 QImage::Format_Indexed8:
never executed: case QImage::Format_Indexed8:
0
849 case
never executed: case QImage::Format_Grayscale8:
 QImage::Format_Grayscale8:
never executed: case QImage::Format_Grayscale8:
0
850 case
never executed: case QImage::Format_RGB32:
 QImage::Format_RGB32:
never executed: case QImage::Format_RGB32:
0
851 case
never executed: case QImage::Format_ARGB32:
 QImage::Format_ARGB32:
never executed: case QImage::Format_ARGB32:
0
852 case
never executed: case QImage::Format_RGB888:
 QImage::Format_RGB888:
never executed: case QImage::Format_RGB888:
0
853 {-
854 png_bytep* row_pointers = new png_bytep[height];-
855 for (int y=0; y<height
y<heightDescription
TRUEnever evaluated
FALSEnever evaluated
; y++)		0
856 row_pointers[y] = const_cast<png_bytep>(image.constScanLine(y));
never executed: row_pointers[y] = const_cast<png_bytep>(image.constScanLine(y));
0
857 png_write_image(png_ptr, row_pointers);-
858 delete [] row_pointers;-
859 }-
860 break;
never executed: break;
0
861 default
never executed: default:
:
never executed: default:
0
862 {-
863 QImage::Format fmt = image.hasAlphaChannel()
image.hasAlphaChannel()Description
TRUEnever evaluated
FALSEnever evaluated
 ? QImage::Format_ARGB32 : QImage::Format_RGB32;		0
864 QImage row;-
865 png_bytep row_pointers[1];-
866 for (int y=0; y<height
y<heightDescription
TRUEnever evaluated
FALSEnever evaluated
; y++) {		0
867 row = image.copy(0, y, width, 1).convertToFormat(fmt);-
868 row_pointers[0] = const_cast<png_bytep>(row.constScanLine(0));-
869 png_write_rows(png_ptr, row_pointers, 1);-
870 }
never executed: end of block
0
871 }-
872 break;
never executed: break;
0
873 }-
874-
875 png_write_end(png_ptr, info_ptr);-
876 frames_written++;-
877-
878 png_destroy_write_struct(&png_ptr, &info_ptr);-
879-
880 return
never executed: return true;
 true;
never executed: return true;
0
881}-
882-
883static bool write_png_image(const QImage &image, QIODevice *device,-
884 int quality, float gamma, const QString &description)-
885{-
886 QPNGImageWriter writer(device);-
887 if (quality >= 0
quality >= 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
888 quality = qMin(quality, 100);-
889 quality = (100-quality) * 9 / 91;-
890 }
never executed: end of block
0
891 writer.setGamma(gamma);-
892 return
never executed: return writer.writeImage(image, quality, description);
 writer.writeImage(image, quality, description);
never executed: return writer.writeImage(image, quality, description);
0
893}-
894-
895QPngHandler::QPngHandler()-
896 : d(new QPngHandlerPrivate(this))-
897{-
898}
never executed: end of block
0
899-
900QPngHandler::~QPngHandler()-
901{-
902 if (d->png_ptr
d->png_ptrDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
903 png_destroy_read_struct(&d->png_ptr, &d->info_ptr, &d->end_info);
never executed: png_destroy_read_struct(&d->png_ptr, &d->info_ptr, &d->end_info);
0
904 delete d;-
905}
never executed: end of block
0
906-
907bool QPngHandler::canRead() const-
908{-
909 if (d->state == QPngHandlerPrivate::Ready
d->state == QP...Private::ReadyDescription
TRUEnever evaluated
FALSEnever evaluated
 && !canRead(device())
!canRead(device())Description
TRUEnever evaluated
FALSEnever evaluated
)		0
910 return
never executed: return false;
 false;
never executed: return false;
0
911-
912 if (d->state != QPngHandlerPrivate::Error
d->state != QP...Private::ErrorDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
913 setFormat("png");-
914 return
never executed: return true;
 true;
never executed: return true;
0
915 }-
916-
917 return
never executed: return false;
 false;
never executed: return false;
0
918}-
919-
920bool QPngHandler::canRead(QIODevice *device)-
921{-
922 if (!device
!deviceDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
923 QMessageLogger(__FILE__, 1034, __PRETTY_FUNCTION__).warning("QPngHandler::canRead() called with no device");-
924 return
never executed: return false;
 false;
never executed: return false;
0
925 }-
926-
927 return
never executed: return device->peek(8) == "\x89\x50\x4E\x47\x0D\x0A\x1A\x0A";
 device->peek(8) == "\x89\x50\x4E\x47\x0D\x0A\x1A\x0A";
never executed: return device->peek(8) == "\x89\x50\x4E\x47\x0D\x0A\x1A\x0A";
0
928}-
929-
930bool QPngHandler::read(QImage *image)-
931{-
932 if (!canRead()
!canRead()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
933 return
never executed: return false;
 false;
never executed: return false;
0
934 return
never executed: return d->readPngImage(image);
 d->readPngImage(image);
never executed: return d->readPngImage(image);
0
935}-
936-
937bool QPngHandler::write(const QImage &image)-
938{-
939 return
never executed: return write_png_image(image, device(), d->quality, d->gamma, d->description);
 write_png_image(image, device(), d->quality, d->gamma, d->description);
never executed: return write_png_image(image, device(), d->quality, d->gamma, d->description);
0
940}-
941-
942bool QPngHandler::supportsOption(ImageOption option) const-
943{-
944 return
never executed: return option == Gamma || option == Description || option == ImageFormat || option == Quality || option == Size || option == ScaledSize;
 option == Gamma
option == GammaDescription
TRUEnever evaluated
FALSEnever evaluated
never executed: return option == Gamma || option == Description || option == ImageFormat || option == Quality || option == Size || option == ScaledSize;
0
945 || option == Description
option == DescriptionDescription
TRUEnever evaluated
FALSEnever evaluated
never executed: return option == Gamma || option == Description || option == ImageFormat || option == Quality || option == Size || option == ScaledSize;
0
946 || option == ImageFormat
option == ImageFormatDescription
TRUEnever evaluated
FALSEnever evaluated
never executed: return option == Gamma || option == Description || option == ImageFormat || option == Quality || option == Size || option == ScaledSize;
0
947 || option == Quality
option == QualityDescription
TRUEnever evaluated
FALSEnever evaluated
never executed: return option == Gamma || option == Description || option == ImageFormat || option == Quality || option == Size || option == ScaledSize;
0
948 || option == Size
option == SizeDescription
TRUEnever evaluated
FALSEnever evaluated
never executed: return option == Gamma || option == Description || option == ImageFormat || option == Quality || option == Size || option == ScaledSize;
0
949 || option == ScaledSize
option == ScaledSizeDescription
TRUEnever evaluated
FALSEnever evaluated
;
never executed: return option == Gamma || option == Description || option == ImageFormat || option == Quality || option == Size || option == ScaledSize;
0
950}-
951-
952QVariant QPngHandler::option(ImageOption option) const-
953{-
954 if (d->state == QPngHandlerPrivate::Error
d->state == QP...Private::ErrorDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
955 return
never executed: return QVariant();
 QVariant();
never executed: return QVariant();
0
956 if (d->state == QPngHandlerPrivate::Ready
d->state == QP...Private::ReadyDescription
TRUEnever evaluated
FALSEnever evaluated
 && !d->readPngHeader()
!d->readPngHeader()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
957 return
never executed: return QVariant();
 QVariant();
never executed: return QVariant();
0
958-
959 if (option == Gamma
option == GammaDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
960 return
never executed: return d->gamma == 0.0 ? d->fileGamma : d->gamma;
 d->gamma == 0.0
d->gamma == 0.0Description
TRUEnever evaluated
FALSEnever evaluated
 ? d->fileGamma : d->gamma;
never executed: return d->gamma == 0.0 ? d->fileGamma : d->gamma;
0
961 else if (option == Quality
option == QualityDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
962 return
never executed: return d->quality;
 d->quality;
never executed: return d->quality;
0
963 else if (option == Description
option == DescriptionDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
964 return
never executed: return d->description;
 d->description;
never executed: return d->description;
0
965 else if (option == Size
option == SizeDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
966 return
never executed: return QSize(png_get_image_width(d->png_ptr, d->info_ptr), png_get_image_height(d->png_ptr, d->info_ptr));
 QSize(png_get_image_width(d->png_ptr, d->info_ptr),
never executed: return QSize(png_get_image_width(d->png_ptr, d->info_ptr), png_get_image_height(d->png_ptr, d->info_ptr));
0
967 png_get_image_height(d->png_ptr, d->info_ptr));
never executed: return QSize(png_get_image_width(d->png_ptr, d->info_ptr), png_get_image_height(d->png_ptr, d->info_ptr));
0
968 else if (option == ScaledSize
option == ScaledSizeDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
969 return
never executed: return d->scaledSize;
 d->scaledSize;
never executed: return d->scaledSize;
0
970 else if (option == ImageFormat
option == ImageFormatDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
971 return
never executed: return d->readImageFormat();
 d->readImageFormat();
never executed: return d->readImageFormat();
0
972 return
never executed: return QVariant();
 QVariant();
never executed: return QVariant();
0
973}-
974-
975void QPngHandler::setOption(ImageOption option, const QVariant &value)-
976{-
977 if (option == Gamma
option == GammaDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
978 d->gamma = value.toFloat();
never executed: d->gamma = value.toFloat();
0
979 else if (option == Quality
option == QualityDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
980 d->quality = value.toInt();
never executed: d->quality = value.toInt();
0
981 else if (option == Description
option == DescriptionDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
982 d->description = value.toString();
never executed: d->description = value.toString();
0
983 else if (option == ScaledSize
option == ScaledSizeDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
984 d->scaledSize = value.toSize();
never executed: d->scaledSize = value.toSize();
0
985}
never executed: end of block
0
986-
987QByteArray QPngHandler::name() const-
988{-
989 return
never executed: return "png";
 "png";
never executed: return "png";
0
990}-
991-
992-
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