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__, 492, __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 info_ptr = png_create_info_struct(png_ptr);-
439 if (!info_ptr
!info_ptrDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
440 png_destroy_read_struct(&png_ptr, 0, 0);-
441 png_ptr = 0;-
442 return
never executed: return false;
 false;
never executed: return false;
0
443 }-
444-
445 end_info = png_create_info_struct(png_ptr);-
446 if (!end_info
!end_infoDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
447 png_destroy_read_struct(&png_ptr, &info_ptr, 0);-
448 png_ptr = 0;-
449 return
never executed: return false;
 false;
never executed: return false;
0
450 }-
451-
452 if (_setjmp (((png_ptr)->jmpbuf))
_setjmp (((png_ptr)->jmpbuf))Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
453 png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);-
454 png_ptr = 0;-
455 return
never executed: return false;
 false;
never executed: return false;
0
456 }-
457-
458 png_set_read_fn(png_ptr, this, iod_read_fn);-
459 png_read_info(png_ptr, info_ptr);-
460-
461 readPngTexts(info_ptr);-
462-
463 if (png_get_valid(png_ptr, info_ptr, 0x0001)
png_get_valid(...o_ptr, 0x0001)Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
464 double file_gamma = 0.0;-
465 png_get_gAMA(png_ptr, info_ptr, &file_gamma);-
466 fileGamma = file_gamma;-
467 }
never executed: end of block
0
468-
469 state = ReadHeader;-
470 return
never executed: return true;
 true;
never executed: return true;
0
471}-
472-
473bool QPngHandlerPrivate::readPngImage(QImage *outImage)-
474{-
475 if (state == Error
state == ErrorDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
476 return
never executed: return false;
 false;
never executed: return false;
0
477-
478 if (state == Ready
state == ReadyDescription
TRUEnever evaluated
FALSEnever evaluated
 && !readPngHeader()
!readPngHeader()Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
479 state = Error;-
480 return
never executed: return false;
 false;
never executed: return false;
0
481 }-
482-
483 if (_setjmp (((png_ptr)->jmpbuf))
_setjmp (((png_ptr)->jmpbuf))Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
484 png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);-
485 png_ptr = 0;-
486 amp.deallocate();-
487 state = Error;-
488 return
never executed: return false;
 false;
never executed: return false;
0
489 }-
490-
491 bool doScaledRead = false;-
492 setup_qt(*outImage, png_ptr, info_ptr, scaledSize, &doScaledRead, gamma, fileGamma);-
493-
494 if (outImage->isNull()
outImage->isNull()Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
495 png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);-
496 png_ptr = 0;-
497 amp.deallocate();-
498 state = Error;-
499 return
never executed: return false;
 false;
never executed: return false;
0
500 }-
501-
502 if (doScaledRead
doScaledReadDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
503 read_image_scaled(outImage, png_ptr, info_ptr, amp, scaledSize);-
504 }
never executed: end of block
 else {		0
505 png_uint_32 width = 0;-
506 png_uint_32 height = 0;-
507 png_int_32 offset_x = 0;-
508 png_int_32 offset_y = 0;-
509-
510 int bit_depth = 0;-
511 int color_type = 0;-
512 int unit_type = 0;-
513 png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, 0, 0, 0);-
514 png_get_oFFs(png_ptr, info_ptr, &offset_x, &offset_y, &unit_type);-
515 uchar *data = outImage->bits();-
516 int bpl = outImage->bytesPerLine();-
517 amp.row_pointers = new png_bytep[height];-
518-
519 for (uint y = 0; y < height
y < heightDescription
TRUEnever evaluated
FALSEnever evaluated
; y++)		0
520 amp.row_pointers[y] = data + y * bpl;
never executed: amp.row_pointers[y] = data + y * bpl;
0
521-
522 png_read_image(png_ptr, amp.row_pointers);-
523 amp.deallocate();-
524-
525 outImage->setDotsPerMeterX(png_get_x_pixels_per_meter(png_ptr,info_ptr));-
526 outImage->setDotsPerMeterY(png_get_y_pixels_per_meter(png_ptr,info_ptr));-
527-
528 if (unit_type == 0
unit_type == 0Description
TRUEnever evaluated
FALSEnever evaluated
)		0
529 outImage->setOffset(QPoint(offset_x, offset_y));
never executed: outImage->setOffset(QPoint(offset_x, offset_y));
0
530-
531-
532 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
533 int color_table_size = outImage->colorCount();-
534 for (int y=0; y<(int)height
y<(int)heightDescription
TRUEnever evaluated
FALSEnever evaluated
; ++y) {		0
535 uchar *p = (data + (y) * bpl);-
536 uchar *end = p + width;-
537 while (p < end
p < endDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
538 if (*
*p >= color_table_sizeDescription
TRUEnever evaluated
FALSEnever evaluated
p >= color_table_size
*p >= color_table_sizeDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
539 *
never executed: *p = 0;
p = 0;
never executed: *p = 0;
0
540 ++p;-
541 }
never executed: end of block
0
542 }
never executed: end of block
0
543 }
never executed: end of block
0
544 }
never executed: end of block
0
545-
546 state = ReadingEnd;-
547 png_read_end(png_ptr, end_info);-
548-
549 readPngTexts(end_info);-
550 for (int i = 0; i < readTexts.size()-1
i < readTexts.size()-1Description
TRUEnever evaluated
FALSEnever evaluated
; i+=2)		0
551 outImage->setText(readTexts.at(i), readTexts.at(i+1));
never executed: outImage->setText(readTexts.at(i), readTexts.at(i+1));
0
552-
553 png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);-
554 png_ptr = 0;-
555 amp.deallocate();-
556 state = Ready;-
557-
558 if (scaledSize.isValid()
scaledSize.isValid()Description
TRUEnever evaluated
FALSEnever evaluated
 && outImage->size() != scaledSize
outImage->size() != scaledSizeDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
559 *
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
560-
561 return
never executed: return true;
 true;
never executed: return true;
0
562}-
563-
564QImage::Format QPngHandlerPrivate::readImageFormat()-
565{-
566 QImage::Format format = QImage::Format_Invalid;-
567 png_uint_32 width, height;-
568 int bit_depth, color_type;-
569 png_colorp palette;-
570 int num_palette;-
571 png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, 0, 0, 0);-
572 if (color_type == 0
color_type == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
573-
574 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
575 format = QImage::Format_Mono;-
576 }
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
577 format = QImage::Format_ARGB32;-
578 }
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
579 format = QImage::Format_Grayscale8;-
580 }
never executed: end of block
 else {		0
581 format = QImage::Format_Indexed8;-
582 }
never executed: end of block
0
583 } else if (color_type == (2 | 1)
color_type == (2 | 1)Description
TRUEnever evaluated
FALSEnever evaluated
0
584 && png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette)
png_get_PLTE(p... &num_palette)Description
TRUEnever evaluated
FALSEnever evaluated
0
585 && num_palette <= 256
num_palette <= 256Description
TRUEnever evaluated
FALSEnever evaluated
)		0
586 {-
587-
588 format = bit_depth == 1
bit_depth == 1Description
TRUEnever evaluated
FALSEnever evaluated
 ? QImage::Format_Mono : QImage::Format_Indexed8;		0
589 }
never executed: end of block
 else {		0
590-
591 format = QImage::Format_ARGB32;-
592-
593 if (!(color_type & 4)
!(color_type & 4)Description
TRUEnever evaluated
FALSEnever evaluated
0
594 && !png_get_valid(png_ptr, info_ptr, 0x0010)
!png_get_valid...o_ptr, 0x0010)Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
595-
596 format = QImage::Format_RGB32;-
597 }
never executed: end of block
0
598 }
never executed: end of block
0
599-
600 return
never executed: return format;
 format;
never executed: return format;
0
601}-
602-
603QPNGImageWriter::QPNGImageWriter(QIODevice* iod) :-
604 dev(iod),-
605 frames_written(0),-
606 disposal(Unspecified),-
607 looping(-1),-
608 ms_delay(-1),-
609 gamma(0.0)-
610{-
611}
never executed: end of block
0
612-
613QPNGImageWriter::~QPNGImageWriter()-
614{-
615}-
616-
617void QPNGImageWriter::setDisposalMethod(DisposalMethod dm)-
618{-
619 disposal = dm;-
620}
never executed: end of block
0
621-
622void QPNGImageWriter::setLooping(int loops)-
623{-
624 looping = loops;-
625}
never executed: end of block
0
626-
627void QPNGImageWriter::setFrameDelay(int msecs)-
628{-
629 ms_delay = msecs;-
630}
never executed: end of block
0
631-
632void QPNGImageWriter::setGamma(float g)-
633{-
634 gamma = g;-
635}
never executed: end of block
0
636-
637-
638static void set_text(const QImage &image, png_structp png_ptr, png_infop info_ptr,-
639 const QString &description)-
640{-
641 QMap<QString, QString> text;-
642 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) {-
643 if (!key.isEmpty()
!key.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
644 text.insert(key, image.text(key));
never executed: text.insert(key, image.text(key));
0
645 }
never executed: end of block
0
646 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) {-
647 int index = pair.indexOf(QLatin1Char(':'));-
648 if (index >= 0
index >= 0Description
TRUEnever evaluated
FALSEnever evaluated
 && pair.indexOf(QLatin1Char(' ')) < index
pair.indexOf(Q...(' ')) < indexDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
649 QString s = pair.simplified();-
650 if (!s.isEmpty()
!s.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
651 text.insert(QLatin1String("Description"), s);
never executed: text.insert(QLatin1String("Description"), s);
0
652 }
never executed: end of block
 else {		0
653 QString key = pair.left(index);-
654 if (!key.simplified().isEmpty()
!key.simplified().isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
655 text.insert(key, pair.mid(index + 2).simplified());
never executed: text.insert(key, pair.mid(index + 2).simplified());
0
656 }
never executed: end of block
0
657 }-
658-
659 if (text.isEmpty()
text.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
660 return;
never executed: return;
0
661-
662 png_textp text_ptr = new png_text[text.size()];-
663 memset(text_ptr, 0, text.size() * sizeof(png_text));-
664-
665 QMap<QString, QString>::ConstIterator it = text.constBegin();-
666 int i = 0;-
667 while (it != text.constEnd()
it != text.constEnd()Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
668 text_ptr[i].key = qstrdup(it.key().leftRef(79).toLatin1().constData());-
669 bool noCompress = (it.value().length() < 40);-
670 {-
671 text_ptr[i].compression = noCompress
noCompressDescription
TRUEnever evaluated
FALSEnever evaluated
 ? -1 : 0;		0
672 QByteArray value = it.value().toLatin1();-
673 text_ptr[i].text = qstrdup(value.constData());-
674 text_ptr[i].text_length = value.size();-
675 }-
676 ++i;-
677 ++it;-
678 }
never executed: end of block
0
679-
680 png_set_text(png_ptr, info_ptr, text_ptr, i);-
681 for (i = 0; i < text.size()
i < text.size()Description
TRUEnever evaluated
FALSEnever evaluated
; ++i) {		0
682 delete [] text_ptr[i].key;-
683 delete [] text_ptr[i].text;-
684-
685-
686-
687 }
never executed: end of block
0
688 delete [] text_ptr;-
689}
never executed: end of block
0
690-
691bool QPNGImageWriter::writeImage(const QImage& image, int off_x, int off_y)-
692{-
693 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
694}-
695-
696bool QPNGImageWriter::writeImage(const QImage& image, volatile int quality_in, const QString &description,-
697 int off_x_in, int off_y_in)-
698{-
699 QPoint offset = image.offset();-
700 int off_x = off_x_in + offset.x();-
701 int off_y = off_y_in + offset.y();-
702-
703 png_structp png_ptr;-
704 png_infop info_ptr;-
705-
706 png_ptr = png_create_write_struct("1.2.50",0,0,0);-
707 if (!png_ptr
!png_ptrDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
708 return
never executed: return false;
 false;
never executed: return false;
0
709 }-
710-
711 png_set_error_fn(png_ptr, 0, 0, qt_png_warning);-
712-
713 info_ptr = png_create_info_struct(png_ptr);-
714 if (!info_ptr
!info_ptrDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
715 png_destroy_write_struct(&png_ptr, 0);-
716 return
never executed: return false;
 false;
never executed: return false;
0
717 }-
718-
719 if (_setjmp (((png_ptr)->jmpbuf))
_setjmp (((png_ptr)->jmpbuf))Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
720 png_destroy_write_struct(&png_ptr, &info_ptr);-
721 return
never executed: return false;
 false;
never executed: return false;
0
722 }-
723-
724 int quality = quality_in;-
725 if (quality >= 0
quality >= 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
726 if (quality > 9
quality > 9Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
727 QMessageLogger(__FILE__, 844, __PRETTY_FUNCTION__).warning("PNG: Quality %d out of range", quality);-
728 quality = 9;-
729 }
never executed: end of block
0
730 png_set_compression_level(png_ptr, quality);-
731 }
never executed: end of block
0
732-
733 png_set_write_fn(png_ptr, (void*)this, qpiw_write_fn, qpiw_flush_fn);-
734-
735-
736 int color_type = 0;-
737 if (image.colorCount()
image.colorCount()Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
738 if (image.isGrayscale()
image.isGrayscale()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
739 color_type = 0;
never executed: color_type = 0;
0
740 else-
741 color_type = (2 | 1);
never executed: color_type = (2 | 1);
0
742 }-
743 else if (image.format() == QImage::Format_Grayscale8
image.format()...mat_Grayscale8Description
TRUEnever evaluated
FALSEnever evaluated
)		0
744 color_type = 0;
never executed: color_type = 0;
0
745 else if (image.hasAlphaChannel()
image.hasAlphaChannel()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
746 color_type = (2 | 4);
never executed: color_type = (2 | 4);
0
747 else-
748 color_type = (2);
never executed: color_type = (2);
0
749-
750 png_set_IHDR(png_ptr, info_ptr, image.width(), image.height(),-
751 image.depth() == 1 ? 1 : 8,-
752 color_type, 0, 0, 0);-
753-
754 if (gamma != 0.0
gamma != 0.0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
755 png_set_gAMA(png_ptr, info_ptr, 1.0/gamma);-
756 }
never executed: end of block
0
757-
758 if (image.format() == QImage::Format_MonoLSB
image.format()...Format_MonoLSBDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
759 png_set_packswap(png_ptr);
never executed: png_set_packswap(png_ptr);
0
760-
761 if (color_type == (2 | 1)
color_type == (2 | 1)Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
762-
763 int num_palette = qMin(256, image.colorCount());-
764 png_color palette[256];-
765 png_byte trans[256];-
766 int num_trans = 0;-
767 for (int i=0; i<num_palette
i<num_paletteDescription
TRUEnever evaluated
FALSEnever evaluated
; i++) {		0
768 QRgb rgba=image.color(i);-
769 palette[i].red = qRed(rgba);-
770 palette[i].green = qGreen(rgba);-
771 palette[i].blue = qBlue(rgba);-
772 trans[i] = qAlpha(rgba);-
773 if (trans[i] < 255
trans[i] < 255Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
774 num_trans = i+1;-
775 }
never executed: end of block
0
776 }
never executed: end of block
0
777 png_set_PLTE(png_ptr, info_ptr, palette, num_palette);-
778-
779 if (num_trans
num_transDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
780 png_set_tRNS(png_ptr, info_ptr, trans, num_trans, 0);-
781 }
never executed: end of block
0
782 }
never executed: end of block
0
783-
784-
785-
786 if (QSysInfo::ByteOrder == QSysInfo::BigEndian
QSysInfo::Byte...nfo::BigEndianDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
787 png_set_swap_alpha(png_ptr);-
788 }
never executed: end of block
0
789-
790-
791 if (QSysInfo::ByteOrder == QSysInfo::LittleEndian
QSysInfo::Byte...::LittleEndianDescription
TRUEnever evaluated
FALSEnever evaluated
0
792 && image.format() != QImage::Format_RGB888
image.format()...:Format_RGB888Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
793 png_set_bgr(png_ptr);-
794 }
never executed: end of block
0
795-
796 if (off_x
off_xDescription
TRUEnever evaluated
FALSEnever evaluated
 || off_y
off_yDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
797 png_set_oFFs(png_ptr, info_ptr, off_x, off_y, 0);-
798 }
never executed: end of block
0
799-
800 if (frames_written > 0
frames_written > 0Description
TRUEnever evaluated
FALSEnever evaluated
)		0
801 png_set_sig_bytes(png_ptr, 8);
never executed: png_set_sig_bytes(png_ptr, 8);
0
802-
803 if (image.dotsPerMeterX() > 0
image.dotsPerMeterX() > 0Description
TRUEnever evaluated
FALSEnever evaluated
 || image.dotsPerMeterY() > 0
image.dotsPerMeterY() > 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
804 png_set_pHYs(png_ptr, info_ptr,-
805 image.dotsPerMeterX(), image.dotsPerMeterY(),-
806 1);-
807 }
never executed: end of block
0
808-
809 set_text(image, png_ptr, info_ptr, description);-
810-
811 png_write_info(png_ptr, info_ptr);-
812-
813 if (image.depth() != 1
image.depth() != 1Description
TRUEnever evaluated
FALSEnever evaluated
)		0
814 png_set_packing(png_ptr);
never executed: png_set_packing(png_ptr);
0
815-
816 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
817 png_set_filler(png_ptr, 0,
never executed: png_set_filler(png_ptr, 0, QSysInfo::ByteOrder == QSysInfo::BigEndian ? 0 : 1);
0
818 QSysInfo::ByteOrder == QSysInfo::BigEndian ?
never executed: png_set_filler(png_ptr, 0, QSysInfo::ByteOrder == QSysInfo::BigEndian ? 0 : 1);
0
819 0 : 1);
never executed: png_set_filler(png_ptr, 0, QSysInfo::ByteOrder == QSysInfo::BigEndian ? 0 : 1);
0
820-
821 if (looping >= 0
looping >= 0Description
TRUEnever evaluated
FALSEnever evaluated
 && frames_written == 0
frames_written == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
822 uchar data[13] = "NETSCAPE2.0";-
823-
824 data[0xB] = looping%0x100;-
825 data[0xC] = looping/0x100;-
826 png_write_chunk(png_ptr, const_cast<png_bytep>((const png_byte *)"gIFx"), data, 13);-
827 }
never executed: end of block
0
828 if (ms_delay >= 0
ms_delay >= 0Description
TRUEnever evaluated
FALSEnever evaluated
 || disposal!=Unspecified
disposal!=UnspecifiedDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
829 uchar data[4];-
830 data[0] = disposal;-
831 data[1] = 0;-
832 data[2] = (ms_delay/10)/0x100;-
833 data[3] = (ms_delay/10)%0x100;-
834 png_write_chunk(png_ptr, const_cast<png_bytep>((const png_byte *)"gIFg"), data, 4);-
835 }
never executed: end of block
0
836-
837 int height = image.height();-
838 int width = image.width();-
839 switch (image.format()) {-
840 case
never executed: case QImage::Format_Mono:
 QImage::Format_Mono:
never executed: case QImage::Format_Mono:
0
841 case
never executed: case QImage::Format_MonoLSB:
 QImage::Format_MonoLSB:
never executed: case QImage::Format_MonoLSB:
0
842 case
never executed: case QImage::Format_Indexed8:
 QImage::Format_Indexed8:
never executed: case QImage::Format_Indexed8:
0
843 case
never executed: case QImage::Format_Grayscale8:
 QImage::Format_Grayscale8:
never executed: case QImage::Format_Grayscale8:
0
844 case
never executed: case QImage::Format_RGB32:
 QImage::Format_RGB32:
never executed: case QImage::Format_RGB32:
0
845 case
never executed: case QImage::Format_ARGB32:
 QImage::Format_ARGB32:
never executed: case QImage::Format_ARGB32:
0
846 case
never executed: case QImage::Format_RGB888:
 QImage::Format_RGB888:
never executed: case QImage::Format_RGB888:
0
847 {-
848 png_bytep* row_pointers = new png_bytep[height];-
849 for (int y=0; y<height
y<heightDescription
TRUEnever evaluated
FALSEnever evaluated
; y++)		0
850 row_pointers[y] = const_cast<png_bytep>(image.constScanLine(y));
never executed: row_pointers[y] = const_cast<png_bytep>(image.constScanLine(y));
0
851 png_write_image(png_ptr, row_pointers);-
852 delete [] row_pointers;-
853 }-
854 break;
never executed: break;
0
855 default
never executed: default:
:
never executed: default:
0
856 {-
857 QImage::Format fmt = image.hasAlphaChannel()
image.hasAlphaChannel()Description
TRUEnever evaluated
FALSEnever evaluated
 ? QImage::Format_ARGB32 : QImage::Format_RGB32;		0
858 QImage row;-
859 png_bytep row_pointers[1];-
860 for (int y=0; y<height
y<heightDescription
TRUEnever evaluated
FALSEnever evaluated
; y++) {		0
861 row = image.copy(0, y, width, 1).convertToFormat(fmt);-
862 row_pointers[0] = const_cast<png_bytep>(row.constScanLine(0));-
863 png_write_rows(png_ptr, row_pointers, 1);-
864 }
never executed: end of block
0
865 }-
866 break;
never executed: break;
0
867 }-
868-
869 png_write_end(png_ptr, info_ptr);-
870 frames_written++;-
871-
872 png_destroy_write_struct(&png_ptr, &info_ptr);-
873-
874 return
never executed: return true;
 true;
never executed: return true;
0
875}-
876-
877static bool write_png_image(const QImage &image, QIODevice *device,-
878 int quality, float gamma, const QString &description)-
879{-
880 QPNGImageWriter writer(device);-
881 if (quality >= 0
quality >= 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
882 quality = qMin(quality, 100);-
883 quality = (100-quality) * 9 / 91;-
884 }
never executed: end of block
0
885 writer.setGamma(gamma);-
886 return
never executed: return writer.writeImage(image, quality, description);
 writer.writeImage(image, quality, description);
never executed: return writer.writeImage(image, quality, description);
0
887}-
888-
889QPngHandler::QPngHandler()-
890 : d(new QPngHandlerPrivate(this))-
891{-
892}
never executed: end of block
0
893-
894QPngHandler::~QPngHandler()-
895{-
896 if (d->png_ptr
d->png_ptrDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
897 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
898 delete d;-
899}
never executed: end of block
0
900-
901bool QPngHandler::canRead() const-
902{-
903 if (d->state == QPngHandlerPrivate::Ready
d->state == QP...Private::ReadyDescription
TRUEnever evaluated
FALSEnever evaluated
 && !canRead(device())
!canRead(device())Description
TRUEnever evaluated
FALSEnever evaluated
)		0
904 return
never executed: return false;
 false;
never executed: return false;
0
905-
906 if (d->state != QPngHandlerPrivate::Error
d->state != QP...Private::ErrorDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
907 setFormat("png");-
908 return
never executed: return true;
 true;
never executed: return true;
0
909 }-
910-
911 return
never executed: return false;
 false;
never executed: return false;
0
912}-
913-
914bool QPngHandler::canRead(QIODevice *device)-
915{-
916 if (!device
!deviceDescription
TRUEnever evaluated
FALSEnever evaluated
) {		0
917 QMessageLogger(__FILE__, 1034, __PRETTY_FUNCTION__).warning("QPngHandler::canRead() called with no device");-
918 return
never executed: return false;
 false;
never executed: return false;
0
919 }-
920-
921 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
922}-
923-
924bool QPngHandler::read(QImage *image)-
925{-
926 if (!canRead()
!canRead()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
927 return
never executed: return false;
 false;
never executed: return false;
0
928 return
never executed: return d->readPngImage(image);
 d->readPngImage(image);
never executed: return d->readPngImage(image);
0
929}-
930-
931bool QPngHandler::write(const QImage &image)-
932{-
933 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
934}-
935-
936bool QPngHandler::supportsOption(ImageOption option) const-
937{-
938 return
never executed: return option == Gamma || option == Description || option == ImageFormat || option == Quality || option == Size || option == ScaledSize;
 option == Gamma
never executed: return option == Gamma || option == Description || option == ImageFormat || option == Quality || option == Size || option == ScaledSize;
0
939 || option == Description
never executed: return option == Gamma || option == Description || option == ImageFormat || option == Quality || option == Size || option == ScaledSize;
0
940 || option == ImageFormat
never executed: return option == Gamma || option == Description || option == ImageFormat || option == Quality || option == Size || option == ScaledSize;
0
941 || option == Quality
never executed: return option == Gamma || option == Description || option == ImageFormat || option == Quality || option == Size || option == ScaledSize;
0
942 || option == Size
never executed: return option == Gamma || option == Description || option == ImageFormat || option == Quality || option == Size || option == ScaledSize;
0
943 || option == ScaledSize;
never executed: return option == Gamma || option == Description || option == ImageFormat || option == Quality || option == Size || option == ScaledSize;
0
944}-
945-
946QVariant QPngHandler::option(ImageOption option) const-
947{-
948 if (d->state == QPngHandlerPrivate::Error
d->state == QP...Private::ErrorDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
949 return
never executed: return QVariant();
 QVariant();
never executed: return QVariant();
0
950 if (d->state == QPngHandlerPrivate::Ready
d->state == QP...Private::ReadyDescription
TRUEnever evaluated
FALSEnever evaluated
 && !d->readPngHeader()
!d->readPngHeader()Description
TRUEnever evaluated
FALSEnever evaluated
)		0
951 return
never executed: return QVariant();
 QVariant();
never executed: return QVariant();
0
952-
953 if (option == Gamma
option == GammaDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
954 return
never executed: return d->gamma == 0.0 ? d->fileGamma : d->gamma;
 d->gamma == 0.0 ? d->fileGamma : d->gamma;
never executed: return d->gamma == 0.0 ? d->fileGamma : d->gamma;
0
955 else if (option == Quality
option == QualityDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
956 return
never executed: return d->quality;
 d->quality;
never executed: return d->quality;
0
957 else if (option == Description
option == DescriptionDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
958 return
never executed: return d->description;
 d->description;
never executed: return d->description;
0
959 else if (option == Size
option == SizeDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
960 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
961 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
962 else if (option == ScaledSize
option == ScaledSizeDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
963 return
never executed: return d->scaledSize;
 d->scaledSize;
never executed: return d->scaledSize;
0
964 else if (option == ImageFormat
option == ImageFormatDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
965 return
never executed: return d->readImageFormat();
 d->readImageFormat();
never executed: return d->readImageFormat();
0
966 return
never executed: return QVariant();
 QVariant();
never executed: return QVariant();
0
967}-
968-
969void QPngHandler::setOption(ImageOption option, const QVariant &value)-
970{-
971 if (option == Gamma
option == GammaDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
972 d->gamma = value.toFloat();
never executed: d->gamma = value.toFloat();
0
973 else if (option == Quality
option == QualityDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
974 d->quality = value.toInt();
never executed: d->quality = value.toInt();
0
975 else if (option == Description
option == DescriptionDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
976 d->description = value.toString();
never executed: d->description = value.toString();
0
977 else if (option == ScaledSize
option == ScaledSizeDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
978 d->scaledSize = value.toSize();
never executed: d->scaledSize = value.toSize();
0
979}
never executed: end of block
0
980-
981QByteArray QPngHandler::name() const-
982{-
983 return
never executed: return "png";
 "png";
never executed: return "png";
0
984}-
985-
986-
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