GCC Code Coverage Report | |||||||||||||||||||||
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Line | Branch | Exec | Source |
1 |
/* |
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2 |
* PNG image format |
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3 |
* Copyright (c) 2003 Fabrice Bellard |
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4 |
* |
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5 |
* This file is part of FFmpeg. |
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6 |
* |
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7 |
* FFmpeg is free software; you can redistribute it and/or |
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8 |
* modify it under the terms of the GNU Lesser General Public |
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9 |
* License as published by the Free Software Foundation; either |
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10 |
* version 2.1 of the License, or (at your option) any later version. |
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11 |
* |
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12 |
* FFmpeg is distributed in the hope that it will be useful, |
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13 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
||
15 |
* Lesser General Public License for more details. |
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16 |
* |
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17 |
* You should have received a copy of the GNU Lesser General Public |
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18 |
* License along with FFmpeg; if not, write to the Free Software |
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19 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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20 |
*/ |
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21 |
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22 |
//#define DEBUG |
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23 |
|||
24 |
#include "libavutil/avassert.h" |
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25 |
#include "libavutil/bprint.h" |
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26 |
#include "libavutil/crc.h" |
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27 |
#include "libavutil/imgutils.h" |
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28 |
#include "libavutil/intreadwrite.h" |
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29 |
#include "libavutil/stereo3d.h" |
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30 |
#include "libavutil/mastering_display_metadata.h" |
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31 |
|||
32 |
#include "avcodec.h" |
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33 |
#include "bytestream.h" |
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34 |
#include "internal.h" |
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35 |
#include "apng.h" |
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36 |
#include "png.h" |
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37 |
#include "pngdsp.h" |
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38 |
#include "thread.h" |
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39 |
|||
40 |
#include <zlib.h> |
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41 |
|||
42 |
enum PNGHeaderState { |
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43 |
PNG_IHDR = 1 << 0, |
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44 |
PNG_PLTE = 1 << 1, |
||
45 |
}; |
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46 |
|||
47 |
enum PNGImageState { |
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48 |
PNG_IDAT = 1 << 0, |
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49 |
PNG_ALLIMAGE = 1 << 1, |
||
50 |
}; |
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51 |
|||
52 |
typedef struct PNGDecContext { |
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53 |
PNGDSPContext dsp; |
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54 |
AVCodecContext *avctx; |
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55 |
|||
56 |
GetByteContext gb; |
||
57 |
ThreadFrame previous_picture; |
||
58 |
ThreadFrame last_picture; |
||
59 |
ThreadFrame picture; |
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60 |
|||
61 |
enum PNGHeaderState hdr_state; |
||
62 |
enum PNGImageState pic_state; |
||
63 |
int width, height; |
||
64 |
int cur_w, cur_h; |
||
65 |
int last_w, last_h; |
||
66 |
int x_offset, y_offset; |
||
67 |
int last_x_offset, last_y_offset; |
||
68 |
uint8_t dispose_op, blend_op; |
||
69 |
uint8_t last_dispose_op; |
||
70 |
int bit_depth; |
||
71 |
int color_type; |
||
72 |
int compression_type; |
||
73 |
int interlace_type; |
||
74 |
int filter_type; |
||
75 |
int channels; |
||
76 |
int bits_per_pixel; |
||
77 |
int bpp; |
||
78 |
int has_trns; |
||
79 |
uint8_t transparent_color_be[6]; |
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80 |
|||
81 |
uint8_t *image_buf; |
||
82 |
int image_linesize; |
||
83 |
uint32_t palette[256]; |
||
84 |
uint8_t *crow_buf; |
||
85 |
uint8_t *last_row; |
||
86 |
unsigned int last_row_size; |
||
87 |
uint8_t *tmp_row; |
||
88 |
unsigned int tmp_row_size; |
||
89 |
uint8_t *buffer; |
||
90 |
int buffer_size; |
||
91 |
int pass; |
||
92 |
int crow_size; /* compressed row size (include filter type) */ |
||
93 |
int row_size; /* decompressed row size */ |
||
94 |
int pass_row_size; /* decompress row size of the current pass */ |
||
95 |
int y; |
||
96 |
z_stream zstream; |
||
97 |
} PNGDecContext; |
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98 |
|||
99 |
/* Mask to determine which pixels are valid in a pass */ |
||
100 |
static const uint8_t png_pass_mask[NB_PASSES] = { |
||
101 |
0x01, 0x01, 0x11, 0x11, 0x55, 0x55, 0xff, |
||
102 |
}; |
||
103 |
|||
104 |
/* Mask to determine which y pixels can be written in a pass */ |
||
105 |
static const uint8_t png_pass_dsp_ymask[NB_PASSES] = { |
||
106 |
0xff, 0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, |
||
107 |
}; |
||
108 |
|||
109 |
/* Mask to determine which pixels to overwrite while displaying */ |
||
110 |
static const uint8_t png_pass_dsp_mask[NB_PASSES] = { |
||
111 |
0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff |
||
112 |
}; |
||
113 |
|||
114 |
/* NOTE: we try to construct a good looking image at each pass. width |
||
115 |
* is the original image width. We also do pixel format conversion at |
||
116 |
* this stage */ |
||
117 |
1408 |
static void png_put_interlaced_row(uint8_t *dst, int width, |
|
118 |
int bits_per_pixel, int pass, |
||
119 |
int color_type, const uint8_t *src) |
||
120 |
{ |
||
121 |
int x, mask, dsp_mask, j, src_x, b, bpp; |
||
122 |
uint8_t *d; |
||
123 |
const uint8_t *s; |
||
124 |
|||
125 |
1408 |
mask = png_pass_mask[pass]; |
|
126 |
1408 |
dsp_mask = png_pass_dsp_mask[pass]; |
|
127 |
|||
128 |
✗✗✗✓ |
1408 |
switch (bits_per_pixel) { |
129 |
case 1: |
||
130 |
src_x = 0; |
||
131 |
for (x = 0; x < width; x++) { |
||
132 |
j = (x & 7); |
||
133 |
if ((dsp_mask << j) & 0x80) { |
||
134 |
b = (src[src_x >> 3] >> (7 - (src_x & 7))) & 1; |
||
135 |
dst[x >> 3] &= 0xFF7F>>j; |
||
136 |
dst[x >> 3] |= b << (7 - j); |
||
137 |
} |
||
138 |
if ((mask << j) & 0x80) |
||
139 |
src_x++; |
||
140 |
} |
||
141 |
break; |
||
142 |
case 2: |
||
143 |
src_x = 0; |
||
144 |
for (x = 0; x < width; x++) { |
||
145 |
int j2 = 2 * (x & 3); |
||
146 |
j = (x & 7); |
||
147 |
if ((dsp_mask << j) & 0x80) { |
||
148 |
b = (src[src_x >> 2] >> (6 - 2*(src_x & 3))) & 3; |
||
149 |
dst[x >> 2] &= 0xFF3F>>j2; |
||
150 |
dst[x >> 2] |= b << (6 - j2); |
||
151 |
} |
||
152 |
if ((mask << j) & 0x80) |
||
153 |
src_x++; |
||
154 |
} |
||
155 |
break; |
||
156 |
case 4: |
||
157 |
src_x = 0; |
||
158 |
for (x = 0; x < width; x++) { |
||
159 |
int j2 = 4*(x&1); |
||
160 |
j = (x & 7); |
||
161 |
if ((dsp_mask << j) & 0x80) { |
||
162 |
b = (src[src_x >> 1] >> (4 - 4*(src_x & 1))) & 15; |
||
163 |
dst[x >> 1] &= 0xFF0F>>j2; |
||
164 |
dst[x >> 1] |= b << (4 - j2); |
||
165 |
} |
||
166 |
if ((mask << j) & 0x80) |
||
167 |
src_x++; |
||
168 |
} |
||
169 |
break; |
||
170 |
1408 |
default: |
|
171 |
1408 |
bpp = bits_per_pixel >> 3; |
|
172 |
1408 |
d = dst; |
|
173 |
1408 |
s = src; |
|
174 |
✓✓ | 181632 |
for (x = 0; x < width; x++) { |
175 |
180224 |
j = x & 7; |
|
176 |
✓✓ | 180224 |
if ((dsp_mask << j) & 0x80) { |
177 |
131072 |
memcpy(d, s, bpp); |
|
178 |
} |
||
179 |
180224 |
d += bpp; |
|
180 |
✓✓ | 180224 |
if ((mask << j) & 0x80) |
181 |
61440 |
s += bpp; |
|
182 |
} |
||
183 |
1408 |
break; |
|
184 |
} |
||
185 |
1408 |
} |
|
186 |
|||
187 |
12914 |
void ff_add_png_paeth_prediction(uint8_t *dst, uint8_t *src, uint8_t *top, |
|
188 |
int w, int bpp) |
||
189 |
{ |
||
190 |
int i; |
||
191 |
✓✓ | 4820588 |
for (i = 0; i < w; i++) { |
192 |
int a, b, c, p, pa, pb, pc; |
||
193 |
|||
194 |
4807674 |
a = dst[i - bpp]; |
|
195 |
4807674 |
b = top[i]; |
|
196 |
4807674 |
c = top[i - bpp]; |
|
197 |
|||
198 |
4807674 |
p = b - c; |
|
199 |
4807674 |
pc = a - c; |
|
200 |
|||
201 |
4807674 |
pa = abs(p); |
|
202 |
4807674 |
pb = abs(pc); |
|
203 |
4807674 |
pc = abs(p + pc); |
|
204 |
|||
205 |
✓✓✓✓ |
4807674 |
if (pa <= pb && pa <= pc) |
206 |
2726778 |
p = a; |
|
207 |
✓✓ | 2080896 |
else if (pb <= pc) |
208 |
1790946 |
p = b; |
|
209 |
else |
||
210 |
289950 |
p = c; |
|
211 |
4807674 |
dst[i] = p + src[i]; |
|
212 |
} |
||
213 |
12914 |
} |
|
214 |
|||
215 |
#define UNROLL1(bpp, op) \ |
||
216 |
{ \ |
||
217 |
r = dst[0]; \ |
||
218 |
if (bpp >= 2) \ |
||
219 |
g = dst[1]; \ |
||
220 |
if (bpp >= 3) \ |
||
221 |
b = dst[2]; \ |
||
222 |
if (bpp >= 4) \ |
||
223 |
a = dst[3]; \ |
||
224 |
for (; i <= size - bpp; i += bpp) { \ |
||
225 |
dst[i + 0] = r = op(r, src[i + 0], last[i + 0]); \ |
||
226 |
if (bpp == 1) \ |
||
227 |
continue; \ |
||
228 |
dst[i + 1] = g = op(g, src[i + 1], last[i + 1]); \ |
||
229 |
if (bpp == 2) \ |
||
230 |
continue; \ |
||
231 |
dst[i + 2] = b = op(b, src[i + 2], last[i + 2]); \ |
||
232 |
if (bpp == 3) \ |
||
233 |
continue; \ |
||
234 |
dst[i + 3] = a = op(a, src[i + 3], last[i + 3]); \ |
||
235 |
} \ |
||
236 |
} |
||
237 |
|||
238 |
#define UNROLL_FILTER(op) \ |
||
239 |
if (bpp == 1) { \ |
||
240 |
UNROLL1(1, op) \ |
||
241 |
} else if (bpp == 2) { \ |
||
242 |
UNROLL1(2, op) \ |
||
243 |
} else if (bpp == 3) { \ |
||
244 |
UNROLL1(3, op) \ |
||
245 |
} else if (bpp == 4) { \ |
||
246 |
UNROLL1(4, op) \ |
||
247 |
} \ |
||
248 |
for (; i < size; i++) { \ |
||
249 |
dst[i] = op(dst[i - bpp], src[i], last[i]); \ |
||
250 |
} |
||
251 |
|||
252 |
/* NOTE: 'dst' can be equal to 'last' */ |
||
253 |
93816 |
static void png_filter_row(PNGDSPContext *dsp, uint8_t *dst, int filter_type, |
|
254 |
uint8_t *src, uint8_t *last, int size, int bpp) |
||
255 |
{ |
||
256 |
int i, p, r, g, b, a; |
||
257 |
|||
258 |
✓✓✓✓ ✓✗ |
93816 |
switch (filter_type) { |
259 |
77546 |
case PNG_FILTER_VALUE_NONE: |
|
260 |
77546 |
memcpy(dst, src, size); |
|
261 |
77546 |
break; |
|
262 |
2302 |
case PNG_FILTER_VALUE_SUB: |
|
263 |
✓✓ | 10809 |
for (i = 0; i < bpp; i++) |
264 |
8507 |
dst[i] = src[i]; |
|
265 |
✓✓ | 2302 |
if (bpp == 4) { |
266 |
1571 |
p = *(int *)dst; |
|
267 |
✓✓ | 271924 |
for (; i < size; i += bpp) { |
268 |
270353 |
unsigned s = *(int *)(src + i); |
|
269 |
270353 |
p = ((s & 0x7f7f7f7f) + (p & 0x7f7f7f7f)) ^ ((s ^ p) & 0x80808080); |
|
270 |
270353 |
*(int *)(dst + i) = p; |
|
271 |
} |
||
272 |
} else { |
||
273 |
#define OP_SUB(x, s, l) ((x) + (s)) |
||
274 |
✗✓✗✗ ✓✓✓✓ ✓✓✓✓ ✗✓✗✗ ✓✓ |
210220 |
UNROLL_FILTER(OP_SUB); |
275 |
} |
||
276 |
2302 |
break; |
|
277 |
6595 |
case PNG_FILTER_VALUE_UP: |
|
278 |
6595 |
dsp->add_bytes_l2(dst, src, last, size); |
|
279 |
6595 |
break; |
|
280 |
793 |
case PNG_FILTER_VALUE_AVG: |
|
281 |
✓✓ | 3472 |
for (i = 0; i < bpp; i++) { |
282 |
2679 |
p = (last[i] >> 1); |
|
283 |
2679 |
dst[i] = p + src[i]; |
|
284 |
} |
||
285 |
#define OP_AVG(x, s, l) (((((x) + (l)) >> 1) + (s)) & 0xff) |
||
286 |
✗✓✗✗ ✓✓✓✓ ✓✓✓✓ ✓✓✓✓ ✓✓ |
159732 |
UNROLL_FILTER(OP_AVG); |
287 |
793 |
break; |
|
288 |
6580 |
case PNG_FILTER_VALUE_PAETH: |
|
289 |
✓✓ | 28562 |
for (i = 0; i < bpp; i++) { |
290 |
21982 |
p = last[i]; |
|
291 |
21982 |
dst[i] = p + src[i]; |
|
292 |
} |
||
293 |
✓✓✓✗ |
6580 |
if (bpp > 2 && size > 4) { |
294 |
/* would write off the end of the array if we let it process |
||
295 |
* the last pixel with bpp=3 */ |
||
296 |
✓✓ | 6510 |
int w = (bpp & 3) ? size - 3 : size; |
297 |
|||
298 |
✓✗ | 6510 |
if (w > i) { |
299 |
6510 |
dsp->add_paeth_prediction(dst + i, src + i, last + i, size - i, bpp); |
|
300 |
6510 |
i = w; |
|
301 |
} |
||
302 |
} |
||
303 |
6580 |
ff_add_png_paeth_prediction(dst + i, src + i, last + i, size - i, bpp); |
|
304 |
6580 |
break; |
|
305 |
} |
||
306 |
93816 |
} |
|
307 |
|||
308 |
/* This used to be called "deloco" in FFmpeg |
||
309 |
* and is actually an inverse reversible colorspace transformation */ |
||
310 |
#define YUV2RGB(NAME, TYPE) \ |
||
311 |
static void deloco_ ## NAME(TYPE *dst, int size, int alpha) \ |
||
312 |
{ \ |
||
313 |
int i; \ |
||
314 |
for (i = 0; i < size; i += 3 + alpha) { \ |
||
315 |
int g = dst [i + 1]; \ |
||
316 |
dst[i + 0] += g; \ |
||
317 |
dst[i + 2] += g; \ |
||
318 |
} \ |
||
319 |
} |
||
320 |
|||
321 |
YUV2RGB(rgb8, uint8_t) |
||
322 |
YUV2RGB(rgb16, uint16_t) |
||
323 |
|||
324 |
403 |
static int percent_missing(PNGDecContext *s) |
|
325 |
{ |
||
326 |
✓✓ | 403 |
if (s->interlace_type) { |
327 |
1 |
return 100 - 100 * s->pass / (NB_PASSES - 1); |
|
328 |
} else { |
||
329 |
402 |
return 100 - 100 * s->y / s->cur_h; |
|
330 |
} |
||
331 |
} |
||
332 |
|||
333 |
/* process exactly one decompressed row */ |
||
334 |
93816 |
static void png_handle_row(PNGDecContext *s) |
|
335 |
{ |
||
336 |
uint8_t *ptr, *last_row; |
||
337 |
int got_line; |
||
338 |
|||
339 |
✓✓ | 93816 |
if (!s->interlace_type) { |
340 |
93336 |
ptr = s->image_buf + s->image_linesize * (s->y + s->y_offset) + s->x_offset * s->bpp; |
|
341 |
✓✓ | 93336 |
if (s->y == 0) |
342 |
446 |
last_row = s->last_row; |
|
343 |
else |
||
344 |
92890 |
last_row = ptr - s->image_linesize; |
|
345 |
|||
346 |
93336 |
png_filter_row(&s->dsp, ptr, s->crow_buf[0], s->crow_buf + 1, |
|
347 |
last_row, s->row_size, s->bpp); |
||
348 |
/* loco lags by 1 row so that it doesn't interfere with top prediction */ |
||
349 |
✗✓✗✗ |
93336 |
if (s->filter_type == PNG_FILTER_TYPE_LOCO && s->y > 0) { |
350 |
if (s->bit_depth == 16) { |
||
351 |
deloco_rgb16((uint16_t *)(ptr - s->image_linesize), s->row_size / 2, |
||
352 |
s->color_type == PNG_COLOR_TYPE_RGB_ALPHA); |
||
353 |
} else { |
||
354 |
deloco_rgb8(ptr - s->image_linesize, s->row_size, |
||
355 |
s->color_type == PNG_COLOR_TYPE_RGB_ALPHA); |
||
356 |
} |
||
357 |
} |
||
358 |
93336 |
s->y++; |
|
359 |
✓✓ | 93336 |
if (s->y == s->cur_h) { |
360 |
446 |
s->pic_state |= PNG_ALLIMAGE; |
|
361 |
✗✓ | 446 |
if (s->filter_type == PNG_FILTER_TYPE_LOCO) { |
362 |
if (s->bit_depth == 16) { |
||
363 |
deloco_rgb16((uint16_t *)ptr, s->row_size / 2, |
||
364 |
s->color_type == PNG_COLOR_TYPE_RGB_ALPHA); |
||
365 |
} else { |
||
366 |
deloco_rgb8(ptr, s->row_size, |
||
367 |
s->color_type == PNG_COLOR_TYPE_RGB_ALPHA); |
||
368 |
} |
||
369 |
} |
||
370 |
} |
||
371 |
} else { |
||
372 |
480 |
got_line = 0; |
|
373 |
for (;;) { |
||
374 |
2270 |
ptr = s->image_buf + s->image_linesize * (s->y + s->y_offset) + s->x_offset * s->bpp; |
|
375 |
✓✓ | 2270 |
if ((ff_png_pass_ymask[s->pass] << (s->y & 7)) & 0x80) { |
376 |
/* if we already read one row, it is time to stop to |
||
377 |
* wait for the next one */ |
||
378 |
✓✓ | 958 |
if (got_line) |
379 |
478 |
break; |
|
380 |
480 |
png_filter_row(&s->dsp, s->tmp_row, s->crow_buf[0], s->crow_buf + 1, |
|
381 |
s->last_row, s->pass_row_size, s->bpp); |
||
382 |
480 |
FFSWAP(uint8_t *, s->last_row, s->tmp_row); |
|
383 |
480 |
FFSWAP(unsigned int, s->last_row_size, s->tmp_row_size); |
|
384 |
480 |
got_line = 1; |
|
385 |
} |
||
386 |
✓✓ | 1792 |
if ((png_pass_dsp_ymask[s->pass] << (s->y & 7)) & 0x80) { |
387 |
1408 |
png_put_interlaced_row(ptr, s->cur_w, s->bits_per_pixel, s->pass, |
|
388 |
1408 |
s->color_type, s->last_row); |
|
389 |
} |
||
390 |
1792 |
s->y++; |
|
391 |
✓✓ | 1792 |
if (s->y == s->cur_h) { |
392 |
14 |
memset(s->last_row, 0, s->row_size); |
|
393 |
for (;;) { |
||
394 |
✓✓ | 14 |
if (s->pass == NB_PASSES - 1) { |
395 |
2 |
s->pic_state |= PNG_ALLIMAGE; |
|
396 |
2 |
goto the_end; |
|
397 |
} else { |
||
398 |
12 |
s->pass++; |
|
399 |
12 |
s->y = 0; |
|
400 |
12 |
s->pass_row_size = ff_png_pass_row_size(s->pass, |
|
401 |
s->bits_per_pixel, |
||
402 |
s->cur_w); |
||
403 |
12 |
s->crow_size = s->pass_row_size + 1; |
|
404 |
✓✗ | 12 |
if (s->pass_row_size != 0) |
405 |
12 |
break; |
|
406 |
/* skip pass if empty row */ |
||
407 |
} |
||
408 |
} |
||
409 |
} |
||
410 |
} |
||
411 |
480 |
the_end:; |
|
412 |
} |
||
413 |
93816 |
} |
|
414 |
|||
415 |
15603 |
static int png_decode_idat(PNGDecContext *s, int length) |
|
416 |
{ |
||
417 |
int ret; |
||
418 |
✗✓ | 15603 |
s->zstream.avail_in = FFMIN(length, bytestream2_get_bytes_left(&s->gb)); |
419 |
15603 |
s->zstream.next_in = s->gb.buffer; |
|
420 |
15603 |
bytestream2_skip(&s->gb, length); |
|
421 |
|||
422 |
/* decode one line if possible */ |
||
423 |
✓✓ | 124551 |
while (s->zstream.avail_in > 0) { |
424 |
108948 |
ret = inflate(&s->zstream, Z_PARTIAL_FLUSH); |
|
425 |
✓✓✗✓ |
108948 |
if (ret != Z_OK && ret != Z_STREAM_END) { |
426 |
av_log(s->avctx, AV_LOG_ERROR, "inflate returned error %d\n", ret); |
||
427 |
return AVERROR_EXTERNAL; |
||
428 |
} |
||
429 |
✓✓ | 108948 |
if (s->zstream.avail_out == 0) { |
430 |
✓✗ | 93816 |
if (!(s->pic_state & PNG_ALLIMAGE)) { |
431 |
93816 |
png_handle_row(s); |
|
432 |
} |
||
433 |
93816 |
s->zstream.avail_out = s->crow_size; |
|
434 |
93816 |
s->zstream.next_out = s->crow_buf; |
|
435 |
} |
||
436 |
✓✓✗✓ |
108948 |
if (ret == Z_STREAM_END && s->zstream.avail_in > 0) { |
437 |
av_log(s->avctx, AV_LOG_WARNING, |
||
438 |
"%d undecompressed bytes left in buffer\n", s->zstream.avail_in); |
||
439 |
return 0; |
||
440 |
} |
||
441 |
} |
||
442 |
15603 |
return 0; |
|
443 |
} |
||
444 |
|||
445 |
1 |
static int decode_zbuf(AVBPrint *bp, const uint8_t *data, |
|
446 |
const uint8_t *data_end) |
||
447 |
{ |
||
448 |
z_stream zstream; |
||
449 |
unsigned char *buf; |
||
450 |
unsigned buf_size; |
||
451 |
int ret; |
||
452 |
|||
453 |
1 |
zstream.zalloc = ff_png_zalloc; |
|
454 |
1 |
zstream.zfree = ff_png_zfree; |
|
455 |
1 |
zstream.opaque = NULL; |
|
456 |
✗✓ | 1 |
if (inflateInit(&zstream) != Z_OK) |
457 |
return AVERROR_EXTERNAL; |
||
458 |
1 |
zstream.next_in = data; |
|
459 |
1 |
zstream.avail_in = data_end - data; |
|
460 |
1 |
av_bprint_init(bp, 0, AV_BPRINT_SIZE_UNLIMITED); |
|
461 |
|||
462 |
✓✗ | 3 |
while (zstream.avail_in > 0) { |
463 |
3 |
av_bprint_get_buffer(bp, 2, &buf, &buf_size); |
|
464 |
✗✓ | 3 |
if (buf_size < 2) { |
465 |
ret = AVERROR(ENOMEM); |
||
466 |
goto fail; |
||
467 |
} |
||
468 |
3 |
zstream.next_out = buf; |
|
469 |
3 |
zstream.avail_out = buf_size - 1; |
|
470 |
3 |
ret = inflate(&zstream, Z_PARTIAL_FLUSH); |
|
471 |
✓✓✗✓ |
3 |
if (ret != Z_OK && ret != Z_STREAM_END) { |
472 |
ret = AVERROR_EXTERNAL; |
||
473 |
goto fail; |
||
474 |
} |
||
475 |
3 |
bp->len += zstream.next_out - buf; |
|
476 |
✓✓ | 3 |
if (ret == Z_STREAM_END) |
477 |
1 |
break; |
|
478 |
} |
||
479 |
1 |
inflateEnd(&zstream); |
|
480 |
1 |
bp->str[bp->len] = 0; |
|
481 |
1 |
return 0; |
|
482 |
|||
483 |
fail: |
||
484 |
inflateEnd(&zstream); |
||
485 |
av_bprint_finalize(bp, NULL); |
||
486 |
return ret; |
||
487 |
} |
||
488 |
|||
489 |
226 |
static uint8_t *iso88591_to_utf8(const uint8_t *in, size_t size_in) |
|
490 |
{ |
||
491 |
226 |
size_t extra = 0, i; |
|
492 |
uint8_t *out, *q; |
||
493 |
|||
494 |
✓✓ | 3938 |
for (i = 0; i < size_in; i++) |
495 |
3712 |
extra += in[i] >= 0x80; |
|
496 |
✓✗✗✓ |
226 |
if (size_in == SIZE_MAX || extra > SIZE_MAX - size_in - 1) |
497 |
return NULL; |
||
498 |
226 |
q = out = av_malloc(size_in + extra + 1); |
|
499 |
✗✓ | 226 |
if (!out) |
500 |
return NULL; |
||
501 |
✓✓ | 3938 |
for (i = 0; i < size_in; i++) { |
502 |
✗✓ | 3712 |
if (in[i] >= 0x80) { |
503 |
*(q++) = 0xC0 | (in[i] >> 6); |
||
504 |
*(q++) = 0x80 | (in[i] & 0x3F); |
||
505 |
} else { |
||
506 |
3712 |
*(q++) = in[i]; |
|
507 |
} |
||
508 |
} |
||
509 |
226 |
*(q++) = 0; |
|
510 |
226 |
return out; |
|
511 |
} |
||
512 |
|||
513 |
113 |
static int decode_text_chunk(PNGDecContext *s, uint32_t length, int compressed, |
|
514 |
AVDictionary **dict) |
||
515 |
{ |
||
516 |
int ret, method; |
||
517 |
113 |
const uint8_t *data = s->gb.buffer; |
|
518 |
113 |
const uint8_t *data_end = data + length; |
|
519 |
113 |
const uint8_t *keyword = data; |
|
520 |
113 |
const uint8_t *keyword_end = memchr(keyword, 0, data_end - keyword); |
|
521 |
113 |
uint8_t *kw_utf8 = NULL, *text, *txt_utf8 = NULL; |
|
522 |
unsigned text_len; |
||
523 |
AVBPrint bp; |
||
524 |
|||
525 |
✗✓ | 113 |
if (!keyword_end) |
526 |
return AVERROR_INVALIDDATA; |
||
527 |
113 |
data = keyword_end + 1; |
|
528 |
|||
529 |
✗✓ | 113 |
if (compressed) { |
530 |
if (data == data_end) |
||
531 |
return AVERROR_INVALIDDATA; |
||
532 |
method = *(data++); |
||
533 |
if (method) |
||
534 |
return AVERROR_INVALIDDATA; |
||
535 |
if ((ret = decode_zbuf(&bp, data, data_end)) < 0) |
||
536 |
return ret; |
||
537 |
text_len = bp.len; |
||
538 |
ret = av_bprint_finalize(&bp, (char **)&text); |
||
539 |
if (ret < 0) |
||
540 |
return ret; |
||
541 |
} else { |
||
542 |
113 |
text = (uint8_t *)data; |
|
543 |
113 |
text_len = data_end - text; |
|
544 |
} |
||
545 |
|||
546 |
113 |
kw_utf8 = iso88591_to_utf8(keyword, keyword_end - keyword); |
|
547 |
113 |
txt_utf8 = iso88591_to_utf8(text, text_len); |
|
548 |
✗✓ | 113 |
if (text != data) |
549 |
av_free(text); |
||
550 |
✓✗✗✓ |
113 |
if (!(kw_utf8 && txt_utf8)) { |
551 |
av_free(kw_utf8); |
||
552 |
av_free(txt_utf8); |
||
553 |
return AVERROR(ENOMEM); |
||
554 |
} |
||
555 |
|||
556 |
113 |
av_dict_set(dict, kw_utf8, txt_utf8, |
|
557 |
AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL); |
||
558 |
113 |
return 0; |
|
559 |
} |
||
560 |
|||
561 |
357 |
static int decode_ihdr_chunk(AVCodecContext *avctx, PNGDecContext *s, |
|
562 |
uint32_t length) |
||
563 |
{ |
||
564 |
✗✓ | 357 |
if (length != 13) |
565 |
return AVERROR_INVALIDDATA; |
||
566 |
|||
567 |
✗✓ | 357 |
if (s->pic_state & PNG_IDAT) { |
568 |
av_log(avctx, AV_LOG_ERROR, "IHDR after IDAT\n"); |
||
569 |
return AVERROR_INVALIDDATA; |
||
570 |
} |
||
571 |
|||
572 |
✗✓ | 357 |
if (s->hdr_state & PNG_IHDR) { |
573 |
av_log(avctx, AV_LOG_ERROR, "Multiple IHDR\n"); |
||
574 |
return AVERROR_INVALIDDATA; |
||
575 |
} |
||
576 |
|||
577 |
357 |
s->width = s->cur_w = bytestream2_get_be32(&s->gb); |
|
578 |
357 |
s->height = s->cur_h = bytestream2_get_be32(&s->gb); |
|
579 |
✗✓ | 357 |
if (av_image_check_size(s->width, s->height, 0, avctx)) { |
580 |
s->cur_w = s->cur_h = s->width = s->height = 0; |
||
581 |
av_log(avctx, AV_LOG_ERROR, "Invalid image size\n"); |
||
582 |
return AVERROR_INVALIDDATA; |
||
583 |
} |
||
584 |
357 |
s->bit_depth = bytestream2_get_byte(&s->gb); |
|
585 |
✓✗✓✗ ✓✗ |
357 |
if (s->bit_depth != 1 && s->bit_depth != 2 && s->bit_depth != 4 && |
586 |
✓✓✗✓ |
357 |
s->bit_depth != 8 && s->bit_depth != 16) { |
587 |
av_log(avctx, AV_LOG_ERROR, "Invalid bit depth\n"); |
||
588 |
goto error; |
||
589 |
} |
||
590 |
357 |
s->color_type = bytestream2_get_byte(&s->gb); |
|
591 |
357 |
s->compression_type = bytestream2_get_byte(&s->gb); |
|
592 |
✗✓ | 357 |
if (s->compression_type) { |
593 |
av_log(avctx, AV_LOG_ERROR, "Invalid compression method %d\n", s->compression_type); |
||
594 |
goto error; |
||
595 |
} |
||
596 |
357 |
s->filter_type = bytestream2_get_byte(&s->gb); |
|
597 |
357 |
s->interlace_type = bytestream2_get_byte(&s->gb); |
|
598 |
357 |
bytestream2_skip(&s->gb, 4); /* crc */ |
|
599 |
357 |
s->hdr_state |= PNG_IHDR; |
|
600 |
✗✓ | 357 |
if (avctx->debug & FF_DEBUG_PICT_INFO) |
601 |
av_log(avctx, AV_LOG_DEBUG, "width=%d height=%d depth=%d color_type=%d " |
||
602 |
"compression_type=%d filter_type=%d interlace_type=%d\n", |
||
603 |
s->width, s->height, s->bit_depth, s->color_type, |
||
604 |
s->compression_type, s->filter_type, s->interlace_type); |
||
605 |
|||
606 |
357 |
return 0; |
|
607 |
error: |
||
608 |
s->cur_w = s->cur_h = s->width = s->height = 0; |
||
609 |
s->bit_depth = 8; |
||
610 |
return AVERROR_INVALIDDATA; |
||
611 |
} |
||
612 |
|||
613 |
331 |
static int decode_phys_chunk(AVCodecContext *avctx, PNGDecContext *s) |
|
614 |
{ |
||
615 |
✗✓ | 331 |
if (s->pic_state & PNG_IDAT) { |
616 |
av_log(avctx, AV_LOG_ERROR, "pHYs after IDAT\n"); |
||
617 |
return AVERROR_INVALIDDATA; |
||
618 |
} |
||
619 |
331 |
avctx->sample_aspect_ratio.num = bytestream2_get_be32(&s->gb); |
|
620 |
331 |
avctx->sample_aspect_ratio.den = bytestream2_get_be32(&s->gb); |
|
621 |
✓✗✗✓ |
331 |
if (avctx->sample_aspect_ratio.num < 0 || avctx->sample_aspect_ratio.den < 0) |
622 |
avctx->sample_aspect_ratio = (AVRational){ 0, 1 }; |
||
623 |
331 |
bytestream2_skip(&s->gb, 1); /* unit specifier */ |
|
624 |
331 |
bytestream2_skip(&s->gb, 4); /* crc */ |
|
625 |
|||
626 |
331 |
return 0; |
|
627 |
} |
||
628 |
|||
629 |
15603 |
static int decode_idat_chunk(AVCodecContext *avctx, PNGDecContext *s, |
|
630 |
uint32_t length, AVFrame *p) |
||
631 |
{ |
||
632 |
int ret; |
||
633 |
✓✓ | 15603 |
size_t byte_depth = s->bit_depth > 8 ? 2 : 1; |
634 |
|||
635 |
✗✓ | 15603 |
if (!(s->hdr_state & PNG_IHDR)) { |
636 |
av_log(avctx, AV_LOG_ERROR, "IDAT without IHDR\n"); |
||
637 |
return AVERROR_INVALIDDATA; |
||
638 |
} |
||
639 |
✓✓ | 15603 |
if (!(s->pic_state & PNG_IDAT)) { |
640 |
/* init image info */ |
||
641 |
448 |
ret = ff_set_dimensions(avctx, s->width, s->height); |
|
642 |
✗✓ | 448 |
if (ret < 0) |
643 |
return ret; |
||
644 |
|||
645 |
448 |
s->channels = ff_png_get_nb_channels(s->color_type); |
|
646 |
448 |
s->bits_per_pixel = s->bit_depth * s->channels; |
|
647 |
448 |
s->bpp = (s->bits_per_pixel + 7) >> 3; |
|
648 |
448 |
s->row_size = (s->cur_w * s->bits_per_pixel + 7) >> 3; |
|
649 |
|||
650 |
✓✗✓✗ ✓✓ |
448 |
if ((s->bit_depth == 2 || s->bit_depth == 4 || s->bit_depth == 8) && |
651 |
✓✓ | 408 |
s->color_type == PNG_COLOR_TYPE_RGB) { |
652 |
309 |
avctx->pix_fmt = AV_PIX_FMT_RGB24; |
|
653 |
✓✗✓✗ ✓✓ |
139 |
} else if ((s->bit_depth == 2 || s->bit_depth == 4 || s->bit_depth == 8) && |
654 |
✓✓ | 99 |
s->color_type == PNG_COLOR_TYPE_RGB_ALPHA) { |
655 |
52 |
avctx->pix_fmt = AV_PIX_FMT_RGBA; |
|
656 |
✓✗✓✗ ✓✓ |
87 |
} else if ((s->bit_depth == 2 || s->bit_depth == 4 || s->bit_depth == 8) && |
657 |
✓✓ | 47 |
s->color_type == PNG_COLOR_TYPE_GRAY) { |
658 |
4 |
avctx->pix_fmt = AV_PIX_FMT_GRAY8; |
|
659 |
✓✓ | 83 |
} else if (s->bit_depth == 16 && |
660 |
✓✓ | 40 |
s->color_type == PNG_COLOR_TYPE_GRAY) { |
661 |
16 |
avctx->pix_fmt = AV_PIX_FMT_GRAY16BE; |
|
662 |
✓✓ | 67 |
} else if (s->bit_depth == 16 && |
663 |
✓✓ | 24 |
s->color_type == PNG_COLOR_TYPE_RGB) { |
664 |
18 |
avctx->pix_fmt = AV_PIX_FMT_RGB48BE; |
|
665 |
✓✓ | 49 |
} else if (s->bit_depth == 16 && |
666 |
✓✓ | 6 |
s->color_type == PNG_COLOR_TYPE_RGB_ALPHA) { |
667 |
4 |
avctx->pix_fmt = AV_PIX_FMT_RGBA64BE; |
|
668 |
✓✗✓✗ ✓✗✓✓ |
45 |
} else if ((s->bits_per_pixel == 1 || s->bits_per_pixel == 2 || s->bits_per_pixel == 4 || s->bits_per_pixel == 8) && |
669 |
✓✗ | 41 |
s->color_type == PNG_COLOR_TYPE_PALETTE) { |
670 |
41 |
avctx->pix_fmt = AV_PIX_FMT_PAL8; |
|
671 |
✗✓✗✗ ✗✗ |
4 |
} else if (s->bit_depth == 1 && s->bits_per_pixel == 1 && avctx->codec_id != AV_CODEC_ID_APNG) { |
672 |
avctx->pix_fmt = AV_PIX_FMT_MONOBLACK; |
||
673 |
✓✓ | 4 |
} else if (s->bit_depth == 8 && |
674 |
✓✗ | 2 |
s->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) { |
675 |
2 |
avctx->pix_fmt = AV_PIX_FMT_YA8; |
|
676 |
✓✗ | 2 |
} else if (s->bit_depth == 16 && |
677 |
✓✗ | 2 |
s->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) { |
678 |
2 |
avctx->pix_fmt = AV_PIX_FMT_YA16BE; |
|
679 |
} else { |
||
680 |
avpriv_report_missing_feature(avctx, |
||
681 |
"Bit depth %d color type %d", |
||
682 |
s->bit_depth, s->color_type); |
||
683 |
return AVERROR_PATCHWELCOME; |
||
684 |
} |
||
685 |
|||
686 |
✓✓✓✓ |
448 |
if (s->has_trns && s->color_type != PNG_COLOR_TYPE_PALETTE) { |
687 |
✓✗✗✗ ✗ |
2 |
switch (avctx->pix_fmt) { |
688 |
2 |
case AV_PIX_FMT_RGB24: |
|
689 |
2 |
avctx->pix_fmt = AV_PIX_FMT_RGBA; |
|
690 |
2 |
break; |
|
691 |
|||
692 |
case AV_PIX_FMT_RGB48BE: |
||
693 |
avctx->pix_fmt = AV_PIX_FMT_RGBA64BE; |
||
694 |
break; |
||
695 |
|||
696 |
case AV_PIX_FMT_GRAY8: |
||
697 |
avctx->pix_fmt = AV_PIX_FMT_YA8; |
||
698 |
break; |
||
699 |
|||
700 |
case AV_PIX_FMT_GRAY16BE: |
||
701 |
avctx->pix_fmt = AV_PIX_FMT_YA16BE; |
||
702 |
break; |
||
703 |
|||
704 |
default: |
||
705 |
avpriv_request_sample(avctx, "bit depth %d " |
||
706 |
"and color type %d with TRNS", |
||
707 |
s->bit_depth, s->color_type); |
||
708 |
return AVERROR_INVALIDDATA; |
||
709 |
} |
||
710 |
|||
711 |
2 |
s->bpp += byte_depth; |
|
712 |
} |
||
713 |
|||
714 |
✗✓ | 448 |
if ((ret = ff_thread_get_buffer(avctx, &s->picture, AV_GET_BUFFER_FLAG_REF)) < 0) |
715 |
return ret; |
||
716 |
✓✓✓✗ |
448 |
if (avctx->codec_id == AV_CODEC_ID_APNG && s->last_dispose_op != APNG_DISPOSE_OP_PREVIOUS) { |
717 |
101 |
ff_thread_release_buffer(avctx, &s->previous_picture); |
|
718 |
✗✓ | 101 |
if ((ret = ff_thread_get_buffer(avctx, &s->previous_picture, AV_GET_BUFFER_FLAG_REF)) < 0) |
719 |
return ret; |
||
720 |
} |
||
721 |
448 |
p->pict_type = AV_PICTURE_TYPE_I; |
|
722 |
448 |
p->key_frame = 1; |
|
723 |
448 |
p->interlaced_frame = !!s->interlace_type; |
|
724 |
|||
725 |
448 |
ff_thread_finish_setup(avctx); |
|
726 |
|||
727 |
/* compute the compressed row size */ |
||
728 |
✓✓ | 448 |
if (!s->interlace_type) { |
729 |
446 |
s->crow_size = s->row_size + 1; |
|
730 |
} else { |
||
731 |
2 |
s->pass = 0; |
|
732 |
2 |
s->pass_row_size = ff_png_pass_row_size(s->pass, |
|
733 |
s->bits_per_pixel, |
||
734 |
s->cur_w); |
||
735 |
2 |
s->crow_size = s->pass_row_size + 1; |
|
736 |
} |
||
737 |
ff_dlog(avctx, "row_size=%d crow_size =%d\n", |
||
738 |
s->row_size, s->crow_size); |
||
739 |
448 |
s->image_buf = p->data[0]; |
|
740 |
448 |
s->image_linesize = p->linesize[0]; |
|
741 |
/* copy the palette if needed */ |
||
742 |
✓✓ | 448 |
if (avctx->pix_fmt == AV_PIX_FMT_PAL8) |
743 |
41 |
memcpy(p->data[1], s->palette, 256 * sizeof(uint32_t)); |
|
744 |
/* empty row is used if differencing to the first row */ |
||
745 |
448 |
av_fast_padded_mallocz(&s->last_row, &s->last_row_size, s->row_size); |
|
746 |
✗✓ | 448 |
if (!s->last_row) |
747 |
return AVERROR_INVALIDDATA; |
||
748 |
✓✓ | 448 |
if (s->interlace_type || |
749 |
✓✓ | 446 |
s->color_type == PNG_COLOR_TYPE_RGB_ALPHA) { |
750 |
58 |
av_fast_padded_malloc(&s->tmp_row, &s->tmp_row_size, s->row_size); |
|
751 |
✗✓ | 58 |
if (!s->tmp_row) |
752 |
return AVERROR_INVALIDDATA; |
||
753 |
} |
||
754 |
/* compressed row */ |
||
755 |
448 |
av_fast_padded_malloc(&s->buffer, &s->buffer_size, s->row_size + 16); |
|
756 |
✗✓ | 448 |
if (!s->buffer) |
757 |
return AVERROR(ENOMEM); |
||
758 |
|||
759 |
/* we want crow_buf+1 to be 16-byte aligned */ |
||
760 |
448 |
s->crow_buf = s->buffer + 15; |
|
761 |
448 |
s->zstream.avail_out = s->crow_size; |
|
762 |
448 |
s->zstream.next_out = s->crow_buf; |
|
763 |
} |
||
764 |
|||
765 |
15603 |
s->pic_state |= PNG_IDAT; |
|
766 |
|||
767 |
/* set image to non-transparent bpp while decompressing */ |
||
768 |
✓✓✓✓ |
15603 |
if (s->has_trns && s->color_type != PNG_COLOR_TYPE_PALETTE) |
769 |
12 |
s->bpp -= byte_depth; |
|
770 |
|||
771 |
15603 |
ret = png_decode_idat(s, length); |
|
772 |
|||
773 |
✓✓✓✓ |
15603 |
if (s->has_trns && s->color_type != PNG_COLOR_TYPE_PALETTE) |
774 |
12 |
s->bpp += byte_depth; |
|
775 |
|||
776 |
✗✓ | 15603 |
if (ret < 0) |
777 |
return ret; |
||
778 |
|||
779 |
15603 |
bytestream2_skip(&s->gb, 4); /* crc */ |
|
780 |
|||
781 |
15603 |
return 0; |
|
782 |
} |
||
783 |
|||
784 |
2 |
static int decode_plte_chunk(AVCodecContext *avctx, PNGDecContext *s, |
|
785 |
uint32_t length) |
||
786 |
{ |
||
787 |
int n, i, r, g, b; |
||
788 |
|||
789 |
✓✗✗✓ |
2 |
if ((length % 3) != 0 || length > 256 * 3) |
790 |
return AVERROR_INVALIDDATA; |
||
791 |
/* read the palette */ |
||
792 |
2 |
n = length / 3; |
|
793 |
✓✓ | 474 |
for (i = 0; i < n; i++) { |
794 |
472 |
r = bytestream2_get_byte(&s->gb); |
|
795 |
472 |
g = bytestream2_get_byte(&s->gb); |
|
796 |
472 |
b = bytestream2_get_byte(&s->gb); |
|
797 |
472 |
s->palette[i] = (0xFFU << 24) | (r << 16) | (g << 8) | b; |
|
798 |
} |
||
799 |
✓✓ | 42 |
for (; i < 256; i++) |
800 |
40 |
s->palette[i] = (0xFFU << 24); |
|
801 |
2 |
s->hdr_state |= PNG_PLTE; |
|
802 |
2 |
bytestream2_skip(&s->gb, 4); /* crc */ |
|
803 |
|||
804 |
2 |
return 0; |
|
805 |
} |
||
806 |
|||
807 |
4 |
static int decode_trns_chunk(AVCodecContext *avctx, PNGDecContext *s, |
|
808 |
uint32_t length) |
||
809 |
{ |
||
810 |
int v, i; |
||
811 |
|||
812 |
✗✓ | 4 |
if (!(s->hdr_state & PNG_IHDR)) { |
813 |
av_log(avctx, AV_LOG_ERROR, "trns before IHDR\n"); |
||
814 |
return AVERROR_INVALIDDATA; |
||
815 |
} |
||
816 |
|||
817 |
✗✓ | 4 |
if (s->pic_state & PNG_IDAT) { |
818 |
av_log(avctx, AV_LOG_ERROR, "trns after IDAT\n"); |
||
819 |
return AVERROR_INVALIDDATA; |
||
820 |
} |
||
821 |
|||
822 |
✓✓ | 4 |
if (s->color_type == PNG_COLOR_TYPE_PALETTE) { |
823 |
✓✗✗✓ |
2 |
if (length > 256 || !(s->hdr_state & PNG_PLTE)) |
824 |
return AVERROR_INVALIDDATA; |
||
825 |
|||
826 |
✓✓ | 36 |
for (i = 0; i < length; i++) { |
827 |
34 |
unsigned v = bytestream2_get_byte(&s->gb); |
|
828 |
34 |
s->palette[i] = (s->palette[i] & 0x00ffffff) | (v << 24); |
|
829 |
} |
||
830 |
✓✗✓✗ |
2 |
} else if (s->color_type == PNG_COLOR_TYPE_GRAY || s->color_type == PNG_COLOR_TYPE_RGB) { |
831 |
✗✓✗✗ |
2 |
if ((s->color_type == PNG_COLOR_TYPE_GRAY && length != 2) || |
832 |
✓✗✓✗ |
2 |
(s->color_type == PNG_COLOR_TYPE_RGB && length != 6) || |
833 |
✗✓ | 2 |
s->bit_depth == 1) |
834 |
return AVERROR_INVALIDDATA; |
||
835 |
|||
836 |
✓✓ | 8 |
for (i = 0; i < length / 2; i++) { |
837 |
/* only use the least significant bits */ |
||
838 |
6 |
v = av_mod_uintp2(bytestream2_get_be16(&s->gb), s->bit_depth); |
|
839 |
|||
840 |
✗✓ | 6 |
if (s->bit_depth > 8) |
841 |
AV_WB16(&s->transparent_color_be[2 * i], v); |
||
842 |
else |
||
843 |
6 |
s->transparent_color_be[i] = v; |
|
844 |
} |
||
845 |
} else { |
||
846 |
return AVERROR_INVALIDDATA; |
||
847 |
} |
||
848 |
|||
849 |
4 |
bytestream2_skip(&s->gb, 4); /* crc */ |
|
850 |
4 |
s->has_trns = 1; |
|
851 |
|||
852 |
4 |
return 0; |
|
853 |
} |
||
854 |
|||
855 |
1 |
static int decode_iccp_chunk(PNGDecContext *s, int length, AVFrame *f) |
|
856 |
{ |
||
857 |
1 |
int ret, cnt = 0; |
|
858 |
uint8_t *data, profile_name[82]; |
||
859 |
AVBPrint bp; |
||
860 |
AVFrameSideData *sd; |
||
861 |
|||
862 |
✓✓✓✗ |
22 |
while ((profile_name[cnt++] = bytestream2_get_byte(&s->gb)) && cnt < 81); |
863 |
✗✓ | 1 |
if (cnt > 80) { |
864 |
av_log(s->avctx, AV_LOG_ERROR, "iCCP with invalid name!\n"); |
||
865 |
return AVERROR_INVALIDDATA; |
||
866 |
} |
||
867 |
|||
868 |
1 |
length = FFMAX(length - cnt, 0); |
|
869 |
|||
870 |
✗✓ | 1 |
if (bytestream2_get_byte(&s->gb) != 0) { |
871 |
av_log(s->avctx, AV_LOG_ERROR, "iCCP with invalid compression!\n"); |
||
872 |
return AVERROR_INVALIDDATA; |
||
873 |
} |
||
874 |
|||
875 |
1 |
length = FFMAX(length - 1, 0); |
|
876 |
|||
877 |
✗✓ | 1 |
if ((ret = decode_zbuf(&bp, s->gb.buffer, s->gb.buffer + length)) < 0) |
878 |
return ret; |
||
879 |
|||
880 |
1 |
ret = av_bprint_finalize(&bp, (char **)&data); |
|
881 |
✗✓ | 1 |
if (ret < 0) |
882 |
return ret; |
||
883 |
|||
884 |
1 |
sd = av_frame_new_side_data(f, AV_FRAME_DATA_ICC_PROFILE, bp.len); |
|
885 |
✗✓ | 1 |
if (!sd) { |
886 |
av_free(data); |
||
887 |
return AVERROR(ENOMEM); |
||
888 |
} |
||
889 |
|||
890 |
1 |
av_dict_set(&sd->metadata, "name", profile_name, 0); |
|
891 |
1 |
memcpy(sd->data, data, bp.len); |
|
892 |
1 |
av_free(data); |
|
893 |
|||
894 |
/* ICC compressed data and CRC */ |
||
895 |
1 |
bytestream2_skip(&s->gb, length + 4); |
|
896 |
|||
897 |
1 |
return 0; |
|
898 |
} |
||
899 |
|||
900 |
static void handle_small_bpp(PNGDecContext *s, AVFrame *p) |
||
901 |
{ |
||
902 |
if (s->bits_per_pixel == 1 && s->color_type == PNG_COLOR_TYPE_PALETTE) { |
||
903 |
int i, j, k; |
||
904 |
uint8_t *pd = p->data[0]; |
||
905 |
for (j = 0; j < s->height; j++) { |
||
906 |
i = s->width / 8; |
||
907 |
for (k = 7; k >= 1; k--) |
||
908 |
if ((s->width&7) >= k) |
||
909 |
pd[8*i + k - 1] = (pd[i]>>8-k) & 1; |
||
910 |
for (i--; i >= 0; i--) { |
||
911 |
pd[8*i + 7]= pd[i] & 1; |
||
912 |
pd[8*i + 6]= (pd[i]>>1) & 1; |
||
913 |
pd[8*i + 5]= (pd[i]>>2) & 1; |
||
914 |
pd[8*i + 4]= (pd[i]>>3) & 1; |
||
915 |
pd[8*i + 3]= (pd[i]>>4) & 1; |
||
916 |
pd[8*i + 2]= (pd[i]>>5) & 1; |
||
917 |
pd[8*i + 1]= (pd[i]>>6) & 1; |
||
918 |
pd[8*i + 0]= pd[i]>>7; |
||
919 |
} |
||
920 |
pd += s->image_linesize; |
||
921 |
} |
||
922 |
} else if (s->bits_per_pixel == 2) { |
||
923 |
int i, j; |
||
924 |
uint8_t *pd = p->data[0]; |
||
925 |
for (j = 0; j < s->height; j++) { |
||
926 |
i = s->width / 4; |
||
927 |
if (s->color_type == PNG_COLOR_TYPE_PALETTE) { |
||
928 |
if ((s->width&3) >= 3) pd[4*i + 2]= (pd[i] >> 2) & 3; |
||
929 |
if ((s->width&3) >= 2) pd[4*i + 1]= (pd[i] >> 4) & 3; |
||
930 |
if ((s->width&3) >= 1) pd[4*i + 0]= pd[i] >> 6; |
||
931 |
for (i--; i >= 0; i--) { |
||
932 |
pd[4*i + 3]= pd[i] & 3; |
||
933 |
pd[4*i + 2]= (pd[i]>>2) & 3; |
||
934 |
pd[4*i + 1]= (pd[i]>>4) & 3; |
||
935 |
pd[4*i + 0]= pd[i]>>6; |
||
936 |
} |
||
937 |
} else { |
||
938 |
if ((s->width&3) >= 3) pd[4*i + 2]= ((pd[i]>>2) & 3)*0x55; |
||
939 |
if ((s->width&3) >= 2) pd[4*i + 1]= ((pd[i]>>4) & 3)*0x55; |
||
940 |
if ((s->width&3) >= 1) pd[4*i + 0]= ( pd[i]>>6 )*0x55; |
||
941 |
for (i--; i >= 0; i--) { |
||
942 |
pd[4*i + 3]= ( pd[i] & 3)*0x55; |
||
943 |
pd[4*i + 2]= ((pd[i]>>2) & 3)*0x55; |
||
944 |
pd[4*i + 1]= ((pd[i]>>4) & 3)*0x55; |
||
945 |
pd[4*i + 0]= ( pd[i]>>6 )*0x55; |
||
946 |
} |
||
947 |
} |
||
948 |
pd += s->image_linesize; |
||
949 |
} |
||
950 |
} else if (s->bits_per_pixel == 4) { |
||
951 |
int i, j; |
||
952 |
uint8_t *pd = p->data[0]; |
||
953 |
for (j = 0; j < s->height; j++) { |
||
954 |
i = s->width/2; |
||
955 |
if (s->color_type == PNG_COLOR_TYPE_PALETTE) { |
||
956 |
if (s->width&1) pd[2*i+0]= pd[i]>>4; |
||
957 |
for (i--; i >= 0; i--) { |
||
958 |
pd[2*i + 1] = pd[i] & 15; |
||
959 |
pd[2*i + 0] = pd[i] >> 4; |
||
960 |
} |
||
961 |
} else { |
||
962 |
if (s->width & 1) pd[2*i + 0]= (pd[i] >> 4) * 0x11; |
||
963 |
for (i--; i >= 0; i--) { |
||
964 |
pd[2*i + 1] = (pd[i] & 15) * 0x11; |
||
965 |
pd[2*i + 0] = (pd[i] >> 4) * 0x11; |
||
966 |
} |
||
967 |
} |
||
968 |
pd += s->image_linesize; |
||
969 |
} |
||
970 |
} |
||
971 |
} |
||
972 |
|||
973 |
101 |
static int decode_fctl_chunk(AVCodecContext *avctx, PNGDecContext *s, |
|
974 |
uint32_t length) |
||
975 |
{ |
||
976 |
uint32_t sequence_number; |
||
977 |
int cur_w, cur_h, x_offset, y_offset, dispose_op, blend_op; |
||
978 |
|||
979 |
✗✓ | 101 |
if (length != 26) |
980 |
return AVERROR_INVALIDDATA; |
||
981 |
|||
982 |
✗✓ | 101 |
if (!(s->hdr_state & PNG_IHDR)) { |
983 |
av_log(avctx, AV_LOG_ERROR, "fctl before IHDR\n"); |
||
984 |
return AVERROR_INVALIDDATA; |
||
985 |
} |
||
986 |
|||
987 |
✗✓ | 101 |
if (s->pic_state & PNG_IDAT) { |
988 |
av_log(avctx, AV_LOG_ERROR, "fctl after IDAT\n"); |
||
989 |
return AVERROR_INVALIDDATA; |
||
990 |
} |
||
991 |
|||
992 |
101 |
s->last_w = s->cur_w; |
|
993 |
101 |
s->last_h = s->cur_h; |
|
994 |
101 |
s->last_x_offset = s->x_offset; |
|
995 |
101 |
s->last_y_offset = s->y_offset; |
|
996 |
101 |
s->last_dispose_op = s->dispose_op; |
|
997 |
|||
998 |
101 |
sequence_number = bytestream2_get_be32(&s->gb); |
|
999 |
101 |
cur_w = bytestream2_get_be32(&s->gb); |
|
1000 |
101 |
cur_h = bytestream2_get_be32(&s->gb); |
|
1001 |
101 |
x_offset = bytestream2_get_be32(&s->gb); |
|
1002 |
101 |
y_offset = bytestream2_get_be32(&s->gb); |
|
1003 |
101 |
bytestream2_skip(&s->gb, 4); /* delay_num (2), delay_den (2) */ |
|
1004 |
101 |
dispose_op = bytestream2_get_byte(&s->gb); |
|
1005 |
101 |
blend_op = bytestream2_get_byte(&s->gb); |
|
1006 |
101 |
bytestream2_skip(&s->gb, 4); /* crc */ |
|
1007 |
|||
1008 |
✓✓ | 101 |
if (sequence_number == 0 && |
1009 |
✓✗ | 9 |
(cur_w != s->width || |
1010 |
✓✗✓✗ |
9 |
cur_h != s->height || |
1011 |
✓✗ | 9 |
x_offset != 0 || |
1012 |
✓✗ | 101 |
y_offset != 0) || |
1013 |
✓✗✓✗ |
101 |
cur_w <= 0 || cur_h <= 0 || |
1014 |
✓✗ | 101 |
x_offset < 0 || y_offset < 0 || |
1015 |
✓✗✗✓ |
101 |
cur_w > s->width - x_offset|| cur_h > s->height - y_offset) |
1016 |
return AVERROR_INVALIDDATA; |
||
1017 |
|||
1018 |
✓✓✗✓ |
101 |
if (blend_op != APNG_BLEND_OP_OVER && blend_op != APNG_BLEND_OP_SOURCE) { |
1019 |
av_log(avctx, AV_LOG_ERROR, "Invalid blend_op %d\n", blend_op); |
||
1020 |
return AVERROR_INVALIDDATA; |
||
1021 |
} |
||
1022 |
|||
1023 |
✓✓✗✓ ✗✓ |
101 |
if ((sequence_number == 0 || !s->previous_picture.f->data[0]) && |
1024 |
dispose_op == APNG_DISPOSE_OP_PREVIOUS) { |
||
1025 |
// No previous frame to revert to for the first frame |
||
1026 |
// Spec says to just treat it as a APNG_DISPOSE_OP_BACKGROUND |
||
1027 |
dispose_op = APNG_DISPOSE_OP_BACKGROUND; |
||
1028 |
} |
||
1029 |
|||
1030 |
✓✓✗✓ |
101 |
if (blend_op == APNG_BLEND_OP_OVER && !s->has_trns && ( |
1031 |
avctx->pix_fmt == AV_PIX_FMT_RGB24 || |
||
1032 |
avctx->pix_fmt == AV_PIX_FMT_RGB48BE || |
||
1033 |
avctx->pix_fmt == AV_PIX_FMT_PAL8 || |
||
1034 |
avctx->pix_fmt == AV_PIX_FMT_GRAY8 || |
||
1035 |
avctx->pix_fmt == AV_PIX_FMT_GRAY16BE || |
||
1036 |
avctx->pix_fmt == AV_PIX_FMT_MONOBLACK |
||
1037 |
)) { |
||
1038 |
// APNG_BLEND_OP_OVER is the same as APNG_BLEND_OP_SOURCE when there is no alpha channel |
||
1039 |
blend_op = APNG_BLEND_OP_SOURCE; |
||
1040 |
} |
||
1041 |
|||
1042 |
101 |
s->cur_w = cur_w; |
|
1043 |
101 |
s->cur_h = cur_h; |
|
1044 |
101 |
s->x_offset = x_offset; |
|
1045 |
101 |
s->y_offset = y_offset; |
|
1046 |
101 |
s->dispose_op = dispose_op; |
|
1047 |
101 |
s->blend_op = blend_op; |
|
1048 |
|||
1049 |
101 |
return 0; |
|
1050 |
} |
||
1051 |
|||
1052 |
static void handle_p_frame_png(PNGDecContext *s, AVFrame *p) |
||
1053 |
{ |
||
1054 |
int i, j; |
||
1055 |
uint8_t *pd = p->data[0]; |
||
1056 |
uint8_t *pd_last = s->last_picture.f->data[0]; |
||
1057 |
int ls = FFMIN(av_image_get_linesize(p->format, s->width, 0), s->width * s->bpp); |
||
1058 |
|||
1059 |
ff_thread_await_progress(&s->last_picture, INT_MAX, 0); |
||
1060 |
for (j = 0; j < s->height; j++) { |
||
1061 |
for (i = 0; i < ls; i++) |
||
1062 |
pd[i] += pd_last[i]; |
||
1063 |
pd += s->image_linesize; |
||
1064 |
pd_last += s->image_linesize; |
||
1065 |
} |
||
1066 |
} |
||
1067 |
|||
1068 |
// divide by 255 and round to nearest |
||
1069 |
// apply a fast variant: (X+127)/255 = ((X+127)*257+257)>>16 = ((X+128)*257)>>16 |
||
1070 |
#define FAST_DIV255(x) ((((x) + 128) * 257) >> 16) |
||
1071 |
|||
1072 |
39 |
static int handle_p_frame_apng(AVCodecContext *avctx, PNGDecContext *s, |
|
1073 |
AVFrame *p) |
||
1074 |
{ |
||
1075 |
size_t x, y; |
||
1076 |
uint8_t *buffer; |
||
1077 |
|||
1078 |
✓✗ | 39 |
if (s->blend_op == APNG_BLEND_OP_OVER && |
1079 |
✓✗ | 39 |
avctx->pix_fmt != AV_PIX_FMT_RGBA && |
1080 |
✓✗ | 39 |
avctx->pix_fmt != AV_PIX_FMT_GRAY8A && |
1081 |
✗✓ | 39 |
avctx->pix_fmt != AV_PIX_FMT_PAL8) { |
1082 |
avpriv_request_sample(avctx, "Blending with pixel format %s", |
||
1083 |
av_get_pix_fmt_name(avctx->pix_fmt)); |
||
1084 |
return AVERROR_PATCHWELCOME; |
||
1085 |
} |
||
1086 |
|||
1087 |
39 |
buffer = av_malloc_array(s->image_linesize, s->height); |
|
1088 |
✗✓ | 39 |
if (!buffer) |
1089 |
return AVERROR(ENOMEM); |
||
1090 |
|||
1091 |
|||
1092 |
// Do the disposal operation specified by the last frame on the frame |
||
1093 |
✓✗ | 39 |
if (s->last_dispose_op != APNG_DISPOSE_OP_PREVIOUS) { |
1094 |
39 |
ff_thread_await_progress(&s->last_picture, INT_MAX, 0); |
|
1095 |
39 |
memcpy(buffer, s->last_picture.f->data[0], s->image_linesize * s->height); |
|
1096 |
|||
1097 |
✗✓ | 39 |
if (s->last_dispose_op == APNG_DISPOSE_OP_BACKGROUND) |
1098 |
for (y = s->last_y_offset; y < s->last_y_offset + s->last_h; ++y) |
||
1099 |
memset(buffer + s->image_linesize * y + s->bpp * s->last_x_offset, 0, s->bpp * s->last_w); |
||
1100 |
|||
1101 |
39 |
memcpy(s->previous_picture.f->data[0], buffer, s->image_linesize * s->height); |
|
1102 |
39 |
ff_thread_report_progress(&s->previous_picture, INT_MAX, 0); |
|
1103 |
} else { |
||
1104 |
ff_thread_await_progress(&s->previous_picture, INT_MAX, 0); |
||
1105 |
memcpy(buffer, s->previous_picture.f->data[0], s->image_linesize * s->height); |
||
1106 |
} |
||
1107 |
|||
1108 |
// Perform blending |
||
1109 |
✗✓ | 39 |
if (s->blend_op == APNG_BLEND_OP_SOURCE) { |
1110 |
for (y = s->y_offset; y < s->y_offset + s->cur_h; ++y) { |
||
1111 |
size_t row_start = s->image_linesize * y + s->bpp * s->x_offset; |
||
1112 |
memcpy(buffer + row_start, p->data[0] + row_start, s->bpp * s->cur_w); |
||
1113 |
} |
||
1114 |
} else { // APNG_BLEND_OP_OVER |
||
1115 |
✓✓ | 1918 |
for (y = s->y_offset; y < s->y_offset + s->cur_h; ++y) { |
1116 |
1879 |
uint8_t *foreground = p->data[0] + s->image_linesize * y + s->bpp * s->x_offset; |
|
1117 |
1879 |
uint8_t *background = buffer + s->image_linesize * y + s->bpp * s->x_offset; |
|
1118 |
✓✓ | 143095 |
for (x = s->x_offset; x < s->x_offset + s->cur_w; ++x, foreground += s->bpp, background += s->bpp) { |
1119 |
size_t b; |
||
1120 |
uint8_t foreground_alpha, background_alpha, output_alpha; |
||
1121 |
uint8_t output[10]; |
||
1122 |
|||
1123 |
// Since we might be blending alpha onto alpha, we use the following equations: |
||
1124 |
// output_alpha = foreground_alpha + (1 - foreground_alpha) * background_alpha |
||
1125 |
// output = (foreground_alpha * foreground + (1 - foreground_alpha) * background_alpha * background) / output_alpha |
||
1126 |
|||
1127 |
✗✗✓✗ |
141216 |
switch (avctx->pix_fmt) { |
1128 |
case AV_PIX_FMT_RGBA: |
||
1129 |
foreground_alpha = foreground[3]; |
||
1130 |
background_alpha = background[3]; |
||
1131 |
break; |
||
1132 |
|||
1133 |
case AV_PIX_FMT_GRAY8A: |
||
1134 |
foreground_alpha = foreground[1]; |
||
1135 |
background_alpha = background[1]; |
||
1136 |
break; |
||
1137 |
|||
1138 |
141216 |
case AV_PIX_FMT_PAL8: |
|
1139 |
141216 |
foreground_alpha = s->palette[foreground[0]] >> 24; |
|
1140 |
141216 |
background_alpha = s->palette[background[0]] >> 24; |
|
1141 |
141216 |
break; |
|
1142 |
} |
||
1143 |
|||
1144 |
✓✓ | 141216 |
if (foreground_alpha == 0) |
1145 |
141216 |
continue; |
|
1146 |
|||
1147 |
✓✗ | 19634 |
if (foreground_alpha == 255) { |
1148 |
19634 |
memcpy(background, foreground, s->bpp); |
|
1149 |
19634 |
continue; |
|
1150 |
} |
||
1151 |
|||
1152 |
if (avctx->pix_fmt == AV_PIX_FMT_PAL8) { |
||
1153 |
// TODO: Alpha blending with PAL8 will likely need the entire image converted over to RGBA first |
||
1154 |
avpriv_request_sample(avctx, "Alpha blending palette samples"); |
||
1155 |
background[0] = foreground[0]; |
||
1156 |
continue; |
||
1157 |
} |
||
1158 |
|||
1159 |
output_alpha = foreground_alpha + FAST_DIV255((255 - foreground_alpha) * background_alpha); |
||
1160 |
|||
1161 |
av_assert0(s->bpp <= 10); |
||
1162 |
|||
1163 |
for (b = 0; b < s->bpp - 1; ++b) { |
||
1164 |
if (output_alpha == 0) { |
||
1165 |
output[b] = 0; |
||
1166 |
} else if (background_alpha == 255) { |
||
1167 |
output[b] = FAST_DIV255(foreground_alpha * foreground[b] + (255 - foreground_alpha) * background[b]); |
||
1168 |
} else { |
||
1169 |
output[b] = (255 * foreground_alpha * foreground[b] + (255 - foreground_alpha) * background_alpha * background[b]) / (255 * output_alpha); |
||
1170 |
} |
||
1171 |
} |
||
1172 |
output[b] = output_alpha; |
||
1173 |
memcpy(background, output, s->bpp); |
||
1174 |
} |
||
1175 |
} |
||
1176 |
} |
||
1177 |
|||
1178 |
// Copy blended buffer into the frame and free |
||
1179 |
39 |
memcpy(p->data[0], buffer, s->image_linesize * s->height); |
|
1180 |
39 |
av_free(buffer); |
|
1181 |
|||
1182 |
39 |
return 0; |
|
1183 |
} |
||
1184 |
|||
1185 |
458 |
static int decode_frame_common(AVCodecContext *avctx, PNGDecContext *s, |
|
1186 |
AVFrame *p, AVPacket *avpkt) |
||
1187 |
{ |
||
1188 |
458 |
const AVCRC *crc_tab = av_crc_get_table(AV_CRC_32_IEEE_LE); |
|
1189 |
458 |
AVDictionary **metadatap = NULL; |
|
1190 |
uint32_t tag, length; |
||
1191 |
458 |
int decode_next_dat = 0; |
|
1192 |
int i, ret; |
||
1193 |
|||
1194 |
for (;;) { |
||
1195 |
17150 |
length = bytestream2_get_bytes_left(&s->gb); |
|
1196 |
✓✓ | 17150 |
if (length <= 0) { |
1197 |
|||
1198 |
✓✓ | 155 |
if (avctx->codec_id == AV_CODEC_ID_PNG && |
1199 |
✓✗ | 45 |
avctx->skip_frame == AVDISCARD_ALL) { |
1200 |
45 |
return 0; |
|
1201 |
} |
||
1202 |
|||
1203 |
✓✗✓✗ |
110 |
if (CONFIG_APNG_DECODER && avctx->codec_id == AV_CODEC_ID_APNG && length == 0) { |
1204 |
✓✓ | 110 |
if (!(s->pic_state & PNG_IDAT)) |
1205 |
9 |
return 0; |
|
1206 |
else |
||
1207 |
101 |
goto exit_loop; |
|
1208 |
} |
||
1209 |
av_log(avctx, AV_LOG_ERROR, "%d bytes left\n", length); |
||
1210 |
if ( s->pic_state & PNG_ALLIMAGE |
||
1211 |
&& avctx->strict_std_compliance <= FF_COMPLIANCE_NORMAL) |
||
1212 |
goto exit_loop; |
||
1213 |
ret = AVERROR_INVALIDDATA; |
||
1214 |
goto fail; |
||
1215 |
} |
||
1216 |
|||
1217 |
16995 |
length = bytestream2_get_be32(&s->gb); |
|
1218 |
✓✗✓✓ |
16995 |
if (length > 0x7fffffff || length > bytestream2_get_bytes_left(&s->gb)) { |
1219 |
1 |
av_log(avctx, AV_LOG_ERROR, "chunk too big\n"); |
|
1220 |
1 |
ret = AVERROR_INVALIDDATA; |
|
1221 |
1 |
goto fail; |
|
1222 |
} |
||
1223 |
✗✓ | 16994 |
if (avctx->err_recognition & (AV_EF_CRCCHECK | AV_EF_IGNORE_ERR)) { |
1224 |
uint32_t crc_sig = AV_RB32(s->gb.buffer + length + 4); |
||
1225 |
uint32_t crc_cal = ~av_crc(crc_tab, UINT32_MAX, s->gb.buffer, length + 4); |
||
1226 |
if (crc_sig ^ crc_cal) { |
||
1227 |
av_log(avctx, AV_LOG_ERROR, "CRC mismatch in chunk"); |
||
1228 |
if (avctx->err_recognition & AV_EF_EXPLODE) { |
||
1229 |
av_log(avctx, AV_LOG_ERROR, ", quitting\n"); |
||
1230 |
ret = AVERROR_INVALIDDATA; |
||
1231 |
goto fail; |
||
1232 |
} |
||
1233 |
av_log(avctx, AV_LOG_ERROR, ", skipping\n"); |
||
1234 |
bytestream2_skip(&s->gb, 4); /* tag */ |
||
1235 |
goto skip_tag; |
||
1236 |
} |
||
1237 |
} |
||
1238 |
16994 |
tag = bytestream2_get_le32(&s->gb); |
|
1239 |
✗✓ | 16994 |
if (avctx->debug & FF_DEBUG_STARTCODE) |
1240 |
av_log(avctx, AV_LOG_DEBUG, "png: tag=%s length=%u\n", |
||
1241 |
av_fourcc2str(tag), length); |
||
1242 |
|||
1243 |
✓✓ | 16994 |
if (avctx->codec_id == AV_CODEC_ID_PNG && |
1244 |
✓✓ | 13591 |
avctx->skip_frame == AVDISCARD_ALL) { |
1245 |
✓✓ | 784 |
switch(tag) { |
1246 |
685 |
case MKTAG('I', 'H', 'D', 'R'): |
|
1247 |
case MKTAG('p', 'H', 'Y', 's'): |
||
1248 |
case MKTAG('t', 'E', 'X', 't'): |
||
1249 |
case MKTAG('I', 'D', 'A', 'T'): |
||
1250 |
case MKTAG('t', 'R', 'N', 'S'): |
||
1251 |
685 |
break; |
|
1252 |
99 |
default: |
|
1253 |
99 |
goto skip_tag; |
|
1254 |
} |
||
1255 |
16210 |
} |
|
1256 |
|||
1257 |
16895 |
metadatap = &p->metadata; |
|
1258 |
✓✓✓✓ ✓✓✓✓ ✗✗✓✓ ✓✓✓ |
16895 |
switch (tag) { |
1259 |
357 |
case MKTAG('I', 'H', 'D', 'R'): |
|
1260 |
✗✓ | 357 |
if ((ret = decode_ihdr_chunk(avctx, s, length)) < 0) |
1261 |
goto fail; |
||
1262 |
357 |
break; |
|
1263 |
331 |
case MKTAG('p', 'H', 'Y', 's'): |
|
1264 |
✗✓ | 331 |
if ((ret = decode_phys_chunk(avctx, s)) < 0) |
1265 |
goto fail; |
||
1266 |
331 |
break; |
|
1267 |
101 |
case MKTAG('f', 'c', 'T', 'L'): |
|
1268 |
✗✓ | 101 |
if (!CONFIG_APNG_DECODER || avctx->codec_id != AV_CODEC_ID_APNG) |
1269 |
goto skip_tag; |
||
1270 |
✗✓ | 101 |
if ((ret = decode_fctl_chunk(avctx, s, length)) < 0) |
1271 |
goto fail; |
||
1272 |
101 |
decode_next_dat = 1; |
|
1273 |
101 |
break; |
|
1274 |
2966 |
case MKTAG('f', 'd', 'A', 'T'): |
|
1275 |
✗✓ | 2966 |
if (!CONFIG_APNG_DECODER || avctx->codec_id != AV_CODEC_ID_APNG) |
1276 |
goto skip_tag; |
||
1277 |
✓✗✗✓ |
2966 |
if (!decode_next_dat || length < 4) { |
1278 |
ret = AVERROR_INVALIDDATA; |
||
1279 |
goto fail; |
||
1280 |
} |
||
1281 |
2966 |
bytestream2_get_be32(&s->gb); |
|
1282 |
2966 |
length -= 4; |
|
1283 |
/* fallthrough */ |
||
1284 |
15603 |
case MKTAG('I', 'D', 'A', 'T'): |
|
1285 |
✓✓✗✓ |
15603 |
if (CONFIG_APNG_DECODER && avctx->codec_id == AV_CODEC_ID_APNG && !decode_next_dat) |
1286 |
goto skip_tag; |
||
1287 |
✗✓ | 15603 |
if ((ret = decode_idat_chunk(avctx, s, length, p)) < 0) |
1288 |
goto fail; |
||
1289 |
15603 |
break; |
|
1290 |
2 |
case MKTAG('P', 'L', 'T', 'E'): |
|
1291 |
✗✓ | 2 |
if (decode_plte_chunk(avctx, s, length) < 0) |
1292 |
goto skip_tag; |
||
1293 |
2 |
break; |
|
1294 |
4 |
case MKTAG('t', 'R', 'N', 'S'): |
|
1295 |
✗✓ | 4 |
if (decode_trns_chunk(avctx, s, length) < 0) |
1296 |
goto skip_tag; |
||
1297 |
4 |
break; |
|
1298 |
113 |
case MKTAG('t', 'E', 'X', 't'): |
|
1299 |
✗✓ | 113 |
if (decode_text_chunk(s, length, 0, metadatap) < 0) |
1300 |
av_log(avctx, AV_LOG_WARNING, "Broken tEXt chunk\n"); |
||
1301 |
113 |
bytestream2_skip(&s->gb, length + 4); |
|
1302 |
113 |
break; |
|
1303 |
case MKTAG('z', 'T', 'X', 't'): |
||
1304 |
if (decode_text_chunk(s, length, 1, metadatap) < 0) |
||
1305 |
av_log(avctx, AV_LOG_WARNING, "Broken zTXt chunk\n"); |
||
1306 |
bytestream2_skip(&s->gb, length + 4); |
||
1307 |
break; |
||
1308 |
case MKTAG('s', 'T', 'E', 'R'): { |
||
1309 |
int mode = bytestream2_get_byte(&s->gb); |
||
1310 |
AVStereo3D *stereo3d = av_stereo3d_create_side_data(p); |
||
1311 |
if (!stereo3d) { |
||
1312 |
ret = AVERROR(ENOMEM); |
||
1313 |
goto fail; |
||
1314 |
} |
||
1315 |
|||
1316 |
if (mode == 0 || mode == 1) { |
||
1317 |
stereo3d->type = AV_STEREO3D_SIDEBYSIDE; |
||
1318 |
stereo3d->flags = mode ? 0 : AV_STEREO3D_FLAG_INVERT; |
||
1319 |
} else { |
||
1320 |
av_log(avctx, AV_LOG_WARNING, |
||
1321 |
"Unknown value in sTER chunk (%d)\n", mode); |
||
1322 |
} |
||
1323 |
bytestream2_skip(&s->gb, 4); /* crc */ |
||
1324 |
break; |
||
1325 |
} |
||
1326 |
1 |
case MKTAG('i', 'C', 'C', 'P'): { |
|
1327 |
✗✓ | 1 |
if ((ret = decode_iccp_chunk(s, length, p)) < 0) |
1328 |
goto fail; |
||
1329 |
1 |
break; |
|
1330 |
} |
||
1331 |
1 |
case MKTAG('c', 'H', 'R', 'M'): { |
|
1332 |
1 |
AVMasteringDisplayMetadata *mdm = av_mastering_display_metadata_create_side_data(p); |
|
1333 |
✗✓ | 1 |
if (!mdm) { |
1334 |
ret = AVERROR(ENOMEM); |
||
1335 |
goto fail; |
||
1336 |
} |
||
1337 |
|||
1338 |
1 |
mdm->white_point[0] = av_make_q(bytestream2_get_be32(&s->gb), 100000); |
|
1339 |
1 |
mdm->white_point[1] = av_make_q(bytestream2_get_be32(&s->gb), 100000); |
|
1340 |
|||
1341 |
/* RGB Primaries */ |
||
1342 |
✓✓ | 4 |
for (i = 0; i < 3; i++) { |
1343 |
3 |
mdm->display_primaries[i][0] = av_make_q(bytestream2_get_be32(&s->gb), 100000); |
|
1344 |
3 |
mdm->display_primaries[i][1] = av_make_q(bytestream2_get_be32(&s->gb), 100000); |
|
1345 |
} |
||
1346 |
|||
1347 |
1 |
mdm->has_primaries = 1; |
|
1348 |
1 |
bytestream2_skip(&s->gb, 4); /* crc */ |
|
1349 |
1 |
break; |
|
1350 |
} |
||
1351 |
13 |
case MKTAG('g', 'A', 'M', 'A'): { |
|
1352 |
AVBPrint bp; |
||
1353 |
char *gamma_str; |
||
1354 |
13 |
int num = bytestream2_get_be32(&s->gb); |
|
1355 |
|||
1356 |
13 |
av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED); |
|
1357 |
13 |
av_bprintf(&bp, "%i/%i", num, 100000); |
|
1358 |
13 |
ret = av_bprint_finalize(&bp, &gamma_str); |
|
1359 |
✗✓ | 13 |
if (ret < 0) |
1360 |
return ret; |
||
1361 |
|||
1362 |
13 |
av_dict_set(&p->metadata, "gamma", gamma_str, AV_DICT_DONT_STRDUP_VAL); |
|
1363 |
|||
1364 |
13 |
bytestream2_skip(&s->gb, 4); /* crc */ |
|
1365 |
13 |
break; |
|
1366 |
} |
||
1367 |
302 |
case MKTAG('I', 'E', 'N', 'D'): |
|
1368 |
✗✓ | 302 |
if (!(s->pic_state & PNG_ALLIMAGE)) |
1369 |
av_log(avctx, AV_LOG_ERROR, "IEND without all image\n"); |
||
1370 |
✗✓ | 302 |
if (!(s->pic_state & (PNG_ALLIMAGE|PNG_IDAT))) { |
1371 |
ret = AVERROR_INVALIDDATA; |
||
1372 |
goto fail; |
||
1373 |
} |
||
1374 |
302 |
bytestream2_skip(&s->gb, 4); /* crc */ |
|
1375 |
302 |
goto exit_loop; |
|
1376 |
default: |
||
1377 |
/* skip tag */ |
||
1378 |
166 |
skip_tag: |
|
1379 |
166 |
bytestream2_skip(&s->gb, length + 4); |
|
1380 |
166 |
break; |
|
1381 |
} |
||
1382 |
} |
||
1383 |
403 |
exit_loop: |
|
1384 |
|||
1385 |
✓✓ | 403 |
if (avctx->codec_id == AV_CODEC_ID_PNG && |
1386 |
✗✓ | 302 |
avctx->skip_frame == AVDISCARD_ALL) { |
1387 |
return 0; |
||
1388 |
} |
||
1389 |
|||
1390 |
✗✓ | 403 |
if (percent_missing(s) > avctx->discard_damaged_percentage) |
1391 |
return AVERROR_INVALIDDATA; |
||
1392 |
|||
1393 |
✗✓ | 403 |
if (s->bits_per_pixel <= 4) |
1394 |
handle_small_bpp(s, p); |
||
1395 |
|||
1396 |
/* apply transparency if needed */ |
||
1397 |
✓✓✓✓ |
403 |
if (s->has_trns && s->color_type != PNG_COLOR_TYPE_PALETTE) { |
1398 |
✗✓ | 1 |
size_t byte_depth = s->bit_depth > 8 ? 2 : 1; |
1399 |
1 |
size_t raw_bpp = s->bpp - byte_depth; |
|
1400 |
unsigned x, y; |
||
1401 |
|||
1402 |
✗✓ | 1 |
av_assert0(s->bit_depth > 1); |
1403 |
|||
1404 |
✓✓ | 331 |
for (y = 0; y < s->height; ++y) { |
1405 |
330 |
uint8_t *row = &s->image_buf[s->image_linesize * y]; |
|
1406 |
|||
1407 |
✗✓✗✗ |
330 |
if (s->bpp == 2 && byte_depth == 1) { |
1408 |
uint8_t *pixel = &row[2 * s->width - 1]; |
||
1409 |
uint8_t *rowp = &row[1 * s->width - 1]; |
||
1410 |
int tcolor = s->transparent_color_be[0]; |
||
1411 |
for (x = s->width; x > 0; --x) { |
||
1412 |
*pixel-- = *rowp == tcolor ? 0 : 0xff; |
||
1413 |
*pixel-- = *rowp--; |
||
1414 |
} |
||
1415 |
✓✗✓✗ |
660 |
} else if (s->bpp == 4 && byte_depth == 1) { |
1416 |
330 |
uint8_t *pixel = &row[4 * s->width - 1]; |
|
1417 |
330 |
uint8_t *rowp = &row[3 * s->width - 1]; |
|
1418 |
330 |
int tcolor = AV_RL24(s->transparent_color_be); |
|
1419 |
✓✓ | 109230 |
for (x = s->width; x > 0; --x) { |
1420 |
✓✓ | 108900 |
*pixel-- = AV_RL24(rowp-2) == tcolor ? 0 : 0xff; |
1421 |
108900 |
*pixel-- = *rowp--; |
|
1422 |
108900 |
*pixel-- = *rowp--; |
|
1423 |
108900 |
*pixel-- = *rowp--; |
|
1424 |
} |
||
1425 |
} else { |
||
1426 |
/* since we're updating in-place, we have to go from right to left */ |
||
1427 |
for (x = s->width; x > 0; --x) { |
||
1428 |
uint8_t *pixel = &row[s->bpp * (x - 1)]; |
||
1429 |
memmove(pixel, &row[raw_bpp * (x - 1)], raw_bpp); |
||
1430 |
|||
1431 |
if (!memcmp(pixel, s->transparent_color_be, raw_bpp)) { |
||
1432 |
memset(&pixel[raw_bpp], 0, byte_depth); |
||
1433 |
} else { |
||
1434 |
memset(&pixel[raw_bpp], 0xff, byte_depth); |
||
1435 |
} |
||
1436 |
} |
||
1437 |
} |
||
1438 |
} |
||
1439 |
} |
||
1440 |
|||
1441 |
/* handle P-frames only if a predecessor frame is available */ |
||
1442 |
✓✓ | 403 |
if (s->last_picture.f->data[0]) { |
1443 |
✓✓✓✗ |
350 |
if ( !(avpkt->flags & AV_PKT_FLAG_KEY) && avctx->codec_tag != AV_RL32("MPNG") |
1444 |
✓✗ | 39 |
&& s->last_picture.f->width == p->width |
1445 |
✓✗ | 39 |
&& s->last_picture.f->height== p->height |
1446 |
✓✗ | 39 |
&& s->last_picture.f->format== p->format |
1447 |
) { |
||
1448 |
✗✓ | 39 |
if (CONFIG_PNG_DECODER && avctx->codec_id != AV_CODEC_ID_APNG) |
1449 |
handle_p_frame_png(s, p); |
||
1450 |
39 |
else if (CONFIG_APNG_DECODER && |
|
1451 |
✓✗ | 39 |
s->previous_picture.f->width == p->width && |
1452 |
✓✗ | 39 |
s->previous_picture.f->height== p->height && |
1453 |
✓✗ | 39 |
s->previous_picture.f->format== p->format && |
1454 |
✓✗✗✓ |
78 |
avctx->codec_id == AV_CODEC_ID_APNG && |
1455 |
39 |
(ret = handle_p_frame_apng(avctx, s, p)) < 0) |
|
1456 |
goto fail; |
||
1457 |
} |
||
1458 |
} |
||
1459 |
403 |
ff_thread_report_progress(&s->picture, INT_MAX, 0); |
|
1460 |
403 |
ff_thread_report_progress(&s->previous_picture, INT_MAX, 0); |
|
1461 |
|||
1462 |
403 |
return 0; |
|
1463 |
|||
1464 |
1 |
fail: |
|
1465 |
1 |
ff_thread_report_progress(&s->picture, INT_MAX, 0); |
|
1466 |
1 |
ff_thread_report_progress(&s->previous_picture, INT_MAX, 0); |
|
1467 |
1 |
return ret; |
|
1468 |
} |
||
1469 |
|||
1470 |
#if CONFIG_PNG_DECODER |
||
1471 |
348 |
static int decode_frame_png(AVCodecContext *avctx, |
|
1472 |
void *data, int *got_frame, |
||
1473 |
AVPacket *avpkt) |
||
1474 |
{ |
||
1475 |
348 |
PNGDecContext *const s = avctx->priv_data; |
|
1476 |
348 |
const uint8_t *buf = avpkt->data; |
|
1477 |
348 |
int buf_size = avpkt->size; |
|
1478 |
AVFrame *p; |
||
1479 |
int64_t sig; |
||
1480 |
int ret; |
||
1481 |
|||
1482 |
348 |
ff_thread_release_buffer(avctx, &s->last_picture); |
|
1483 |
348 |
FFSWAP(ThreadFrame, s->picture, s->last_picture); |
|
1484 |
348 |
p = s->picture.f; |
|
1485 |
|||
1486 |
348 |
bytestream2_init(&s->gb, buf, buf_size); |
|
1487 |
|||
1488 |
/* check signature */ |
||
1489 |
348 |
sig = bytestream2_get_be64(&s->gb); |
|
1490 |
✗✓✗✗ |
348 |
if (sig != PNGSIG && |
1491 |
sig != MNGSIG) { |
||
1492 |
av_log(avctx, AV_LOG_ERROR, "Invalid PNG signature 0x%08"PRIX64".\n", sig); |
||
1493 |
return AVERROR_INVALIDDATA; |
||
1494 |
} |
||
1495 |
|||
1496 |
348 |
s->y = s->has_trns = 0; |
|
1497 |
348 |
s->hdr_state = 0; |
|
1498 |
348 |
s->pic_state = 0; |
|
1499 |
|||
1500 |
/* init the zlib */ |
||
1501 |
348 |
s->zstream.zalloc = ff_png_zalloc; |
|
1502 |
348 |
s->zstream.zfree = ff_png_zfree; |
|
1503 |
348 |
s->zstream.opaque = NULL; |
|
1504 |
348 |
ret = inflateInit(&s->zstream); |
|
1505 |
✗✓ | 348 |
if (ret != Z_OK) { |
1506 |
av_log(avctx, AV_LOG_ERROR, "inflateInit returned error %d\n", ret); |
||
1507 |
return AVERROR_EXTERNAL; |
||
1508 |
} |
||
1509 |
|||
1510 |
✓✓ | 348 |
if ((ret = decode_frame_common(avctx, s, p, avpkt)) < 0) |
1511 |
1 |
goto the_end; |
|
1512 |
|||
1513 |
✓✓ | 347 |
if (avctx->skip_frame == AVDISCARD_ALL) { |
1514 |
45 |
*got_frame = 0; |
|
1515 |
45 |
ret = bytestream2_tell(&s->gb); |
|
1516 |
45 |
goto the_end; |
|
1517 |
} |
||
1518 |
|||
1519 |
✗✓ | 302 |
if ((ret = av_frame_ref(data, s->picture.f)) < 0) |
1520 |
goto the_end; |
||
1521 |
|||
1522 |
302 |
*got_frame = 1; |
|
1523 |
|||
1524 |
302 |
ret = bytestream2_tell(&s->gb); |
|
1525 |
348 |
the_end: |
|
1526 |
348 |
inflateEnd(&s->zstream); |
|
1527 |
348 |
s->crow_buf = NULL; |
|
1528 |
348 |
return ret; |
|
1529 |
} |
||
1530 |
#endif |
||
1531 |
|||
1532 |
#if CONFIG_APNG_DECODER |
||
1533 |
101 |
static int decode_frame_apng(AVCodecContext *avctx, |
|
1534 |
void *data, int *got_frame, |
||
1535 |
AVPacket *avpkt) |
||
1536 |
{ |
||
1537 |
101 |
PNGDecContext *const s = avctx->priv_data; |
|
1538 |
int ret; |
||
1539 |
AVFrame *p; |
||
1540 |
|||
1541 |
101 |
ff_thread_release_buffer(avctx, &s->last_picture); |
|
1542 |
101 |
FFSWAP(ThreadFrame, s->picture, s->last_picture); |
|
1543 |
101 |
p = s->picture.f; |
|
1544 |
|||
1545 |
✓✓ | 101 |
if (!(s->hdr_state & PNG_IHDR)) { |
1546 |
✗✓ | 9 |
if (!avctx->extradata_size) |
1547 |
return AVERROR_INVALIDDATA; |
||
1548 |
|||
1549 |
/* only init fields, there is no zlib use in extradata */ |
||
1550 |
9 |
s->zstream.zalloc = ff_png_zalloc; |
|
1551 |
9 |
s->zstream.zfree = ff_png_zfree; |
|
1552 |
|||
1553 |
9 |
bytestream2_init(&s->gb, avctx->extradata, avctx->extradata_size); |
|
1554 |
✗✓ | 9 |
if ((ret = decode_frame_common(avctx, s, p, avpkt)) < 0) |
1555 |
goto end; |
||
1556 |
} |
||
1557 |
|||
1558 |
/* reset state for a new frame */ |
||
1559 |
✗✓ | 101 |
if ((ret = inflateInit(&s->zstream)) != Z_OK) { |
1560 |
av_log(avctx, AV_LOG_ERROR, "inflateInit returned error %d\n", ret); |
||
1561 |
ret = AVERROR_EXTERNAL; |
||
1562 |
goto end; |
||
1563 |
} |
||
1564 |
101 |
s->y = 0; |
|
1565 |
101 |
s->pic_state = 0; |
|
1566 |
101 |
bytestream2_init(&s->gb, avpkt->data, avpkt->size); |
|
1567 |
✗✓ | 101 |
if ((ret = decode_frame_common(avctx, s, p, avpkt)) < 0) |
1568 |
goto end; |
||
1569 |
|||
1570 |
✗✓ | 101 |
if (!(s->pic_state & PNG_ALLIMAGE)) |
1571 |
av_log(avctx, AV_LOG_WARNING, "Frame did not contain a complete image\n"); |
||
1572 |
✗✓ | 101 |
if (!(s->pic_state & (PNG_ALLIMAGE|PNG_IDAT))) { |
1573 |
ret = AVERROR_INVALIDDATA; |
||
1574 |
goto end; |
||
1575 |
} |
||
1576 |
✗✓ | 101 |
if ((ret = av_frame_ref(data, s->picture.f)) < 0) |
1577 |
goto end; |
||
1578 |
|||
1579 |
101 |
*got_frame = 1; |
|
1580 |
101 |
ret = bytestream2_tell(&s->gb); |
|
1581 |
|||
1582 |
101 |
end: |
|
1583 |
101 |
inflateEnd(&s->zstream); |
|
1584 |
101 |
return ret; |
|
1585 |
} |
||
1586 |
#endif |
||
1587 |
|||
1588 |
#if CONFIG_LSCR_DECODER |
||
1589 |
static int decode_frame_lscr(AVCodecContext *avctx, |
||
1590 |
void *data, int *got_frame, |
||
1591 |
AVPacket *avpkt) |
||
1592 |
{ |
||
1593 |
PNGDecContext *const s = avctx->priv_data; |
||
1594 |
GetByteContext *gb = &s->gb; |
||
1595 |
AVFrame *frame = data; |
||
1596 |
int ret, nb_blocks, offset = 0; |
||
1597 |
|||
1598 |
if (avpkt->size < 2) |
||
1599 |
return AVERROR_INVALIDDATA; |
||
1600 |
if (avpkt->size == 2) |
||
1601 |
return 0; |
||
1602 |
|||
1603 |
bytestream2_init(gb, avpkt->data, avpkt->size); |
||
1604 |
|||
1605 |
if ((ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF)) < 0) |
||
1606 |
return ret; |
||
1607 |
|||
1608 |
nb_blocks = bytestream2_get_le16(gb); |
||
1609 |
if (bytestream2_get_bytes_left(gb) < 2 + nb_blocks * (12 + 8)) |
||
1610 |
return AVERROR_INVALIDDATA; |
||
1611 |
|||
1612 |
if (s->last_picture.f->data[0]) { |
||
1613 |
ret = av_frame_copy(frame, s->last_picture.f); |
||
1614 |
if (ret < 0) |
||
1615 |
return ret; |
||
1616 |
} |
||
1617 |
|||
1618 |
for (int b = 0; b < nb_blocks; b++) { |
||
1619 |
int x, y, x2, y2, w, h, left; |
||
1620 |
uint32_t csize, size; |
||
1621 |
|||
1622 |
s->zstream.zalloc = ff_png_zalloc; |
||
1623 |
s->zstream.zfree = ff_png_zfree; |
||
1624 |
s->zstream.opaque = NULL; |
||
1625 |
|||
1626 |
if ((ret = inflateInit(&s->zstream)) != Z_OK) { |
||
1627 |
av_log(avctx, AV_LOG_ERROR, "inflateInit returned error %d\n", ret); |
||
1628 |
ret = AVERROR_EXTERNAL; |
||
1629 |
goto end; |
||
1630 |
} |
||
1631 |
|||
1632 |
bytestream2_seek(gb, 2 + b * 12, SEEK_SET); |
||
1633 |
|||
1634 |
x = bytestream2_get_le16(gb); |
||
1635 |
y = bytestream2_get_le16(gb); |
||
1636 |
x2 = bytestream2_get_le16(gb); |
||
1637 |
y2 = bytestream2_get_le16(gb); |
||
1638 |
s->width = s->cur_w = w = x2-x; |
||
1639 |
s->height = s->cur_h = h = y2-y; |
||
1640 |
|||
1641 |
if (w <= 0 || x < 0 || x >= avctx->width || w + x > avctx->width || |
||
1642 |
h <= 0 || y < 0 || y >= avctx->height || h + y > avctx->height) { |
||
1643 |
ret = AVERROR_INVALIDDATA; |
||
1644 |
goto end; |
||
1645 |
} |
||
1646 |
|||
1647 |
size = bytestream2_get_le32(gb); |
||
1648 |
|||
1649 |
frame->key_frame = (nb_blocks == 1) && |
||
1650 |
(w == avctx->width) && |
||
1651 |
(h == avctx->height) && |
||
1652 |
(x == 0) && (y == 0); |
||
1653 |
|||
1654 |
bytestream2_seek(gb, 2 + nb_blocks * 12 + offset, SEEK_SET); |
||
1655 |
csize = bytestream2_get_be32(gb); |
||
1656 |
if (bytestream2_get_le32(gb) != MKTAG('I', 'D', 'A', 'T')) { |
||
1657 |
ret = AVERROR_INVALIDDATA; |
||
1658 |
goto end; |
||
1659 |
} |
||
1660 |
|||
1661 |
offset += size; |
||
1662 |
left = size; |
||
1663 |
|||
1664 |
s->y = 0; |
||
1665 |
s->row_size = w * 3; |
||
1666 |
|||
1667 |
av_fast_padded_malloc(&s->buffer, &s->buffer_size, s->row_size + 16); |
||
1668 |
if (!s->buffer) { |
||
1669 |
ret = AVERROR(ENOMEM); |
||
1670 |
goto end; |
||
1671 |
} |
||
1672 |
|||
1673 |
av_fast_padded_malloc(&s->last_row, &s->last_row_size, s->row_size); |
||
1674 |
if (!s->last_row) { |
||
1675 |
ret = AVERROR(ENOMEM); |
||
1676 |
goto end; |
||
1677 |
} |
||
1678 |
|||
1679 |
s->crow_size = w * 3 + 1; |
||
1680 |
s->crow_buf = s->buffer + 15; |
||
1681 |
s->zstream.avail_out = s->crow_size; |
||
1682 |
s->zstream.next_out = s->crow_buf; |
||
1683 |
s->image_buf = frame->data[0] + (avctx->height - y - 1) * frame->linesize[0] + x * 3; |
||
1684 |
s->image_linesize =-frame->linesize[0]; |
||
1685 |
s->bpp = 3; |
||
1686 |
s->pic_state = 0; |
||
1687 |
|||
1688 |
while (left > 16) { |
||
1689 |
ret = png_decode_idat(s, csize); |
||
1690 |
if (ret < 0) |
||
1691 |
goto end; |
||
1692 |
left -= csize + 16; |
||
1693 |
if (left > 16) { |
||
1694 |
bytestream2_skip(gb, 4); |
||
1695 |
csize = bytestream2_get_be32(gb); |
||
1696 |
if (bytestream2_get_le32(gb) != MKTAG('I', 'D', 'A', 'T')) { |
||
1697 |
ret = AVERROR_INVALIDDATA; |
||
1698 |
goto end; |
||
1699 |
} |
||
1700 |
} |
||
1701 |
} |
||
1702 |
|||
1703 |
inflateEnd(&s->zstream); |
||
1704 |
} |
||
1705 |
|||
1706 |
frame->pict_type = frame->key_frame ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_P; |
||
1707 |
|||
1708 |
av_frame_unref(s->last_picture.f); |
||
1709 |
if ((ret = av_frame_ref(s->last_picture.f, frame)) < 0) |
||
1710 |
return ret; |
||
1711 |
|||
1712 |
*got_frame = 1; |
||
1713 |
end: |
||
1714 |
inflateEnd(&s->zstream); |
||
1715 |
|||
1716 |
if (ret < 0) |
||
1717 |
return ret; |
||
1718 |
return avpkt->size; |
||
1719 |
} |
||
1720 |
|||
1721 |
static void decode_flush(AVCodecContext *avctx) |
||
1722 |
{ |
||
1723 |
PNGDecContext *s = avctx->priv_data; |
||
1724 |
|||
1725 |
av_frame_unref(s->last_picture.f); |
||
1726 |
} |
||
1727 |
|||
1728 |
#endif |
||
1729 |
|||
1730 |
#if HAVE_THREADS |
||
1731 |
static int update_thread_context(AVCodecContext *dst, const AVCodecContext *src) |
||
1732 |
{ |
||
1733 |
PNGDecContext *psrc = src->priv_data; |
||
1734 |
PNGDecContext *pdst = dst->priv_data; |
||
1735 |
int ret; |
||
1736 |
|||
1737 |
if (dst == src) |
||
1738 |
return 0; |
||
1739 |
|||
1740 |
ff_thread_release_buffer(dst, &pdst->picture); |
||
1741 |
if (psrc->picture.f->data[0] && |
||
1742 |
(ret = ff_thread_ref_frame(&pdst->picture, &psrc->picture)) < 0) |
||
1743 |
return ret; |
||
1744 |
if (CONFIG_APNG_DECODER && dst->codec_id == AV_CODEC_ID_APNG) { |
||
1745 |
pdst->width = psrc->width; |
||
1746 |
pdst->height = psrc->height; |
||
1747 |
pdst->bit_depth = psrc->bit_depth; |
||
1748 |
pdst->color_type = psrc->color_type; |
||
1749 |
pdst->compression_type = psrc->compression_type; |
||
1750 |
pdst->interlace_type = psrc->interlace_type; |
||
1751 |
pdst->filter_type = psrc->filter_type; |
||
1752 |
pdst->cur_w = psrc->cur_w; |
||
1753 |
pdst->cur_h = psrc->cur_h; |
||
1754 |
pdst->x_offset = psrc->x_offset; |
||
1755 |
pdst->y_offset = psrc->y_offset; |
||
1756 |
pdst->has_trns = psrc->has_trns; |
||
1757 |
memcpy(pdst->transparent_color_be, psrc->transparent_color_be, sizeof(pdst->transparent_color_be)); |
||
1758 |
|||
1759 |
pdst->dispose_op = psrc->dispose_op; |
||
1760 |
|||
1761 |
memcpy(pdst->palette, psrc->palette, sizeof(pdst->palette)); |
||
1762 |
|||
1763 |
pdst->hdr_state |= psrc->hdr_state; |
||
1764 |
|||
1765 |
ff_thread_release_buffer(dst, &pdst->last_picture); |
||
1766 |
if (psrc->last_picture.f->data[0] && |
||
1767 |
(ret = ff_thread_ref_frame(&pdst->last_picture, &psrc->last_picture)) < 0) |
||
1768 |
return ret; |
||
1769 |
|||
1770 |
ff_thread_release_buffer(dst, &pdst->previous_picture); |
||
1771 |
if (psrc->previous_picture.f->data[0] && |
||
1772 |
(ret = ff_thread_ref_frame(&pdst->previous_picture, &psrc->previous_picture)) < 0) |
||
1773 |
return ret; |
||
1774 |
} |
||
1775 |
|||
1776 |
return 0; |
||
1777 |
} |
||
1778 |
#endif |
||
1779 |
|||
1780 |
130 |
static av_cold int png_dec_init(AVCodecContext *avctx) |
|
1781 |
{ |
||
1782 |
130 |
PNGDecContext *s = avctx->priv_data; |
|
1783 |
|||
1784 |
130 |
avctx->color_range = AVCOL_RANGE_JPEG; |
|
1785 |
|||
1786 |
✗✓ | 130 |
if (avctx->codec_id == AV_CODEC_ID_LSCR) |
1787 |
avctx->pix_fmt = AV_PIX_FMT_BGR24; |
||
1788 |
|||
1789 |
130 |
s->avctx = avctx; |
|
1790 |
130 |
s->previous_picture.f = av_frame_alloc(); |
|
1791 |
130 |
s->last_picture.f = av_frame_alloc(); |
|
1792 |
130 |
s->picture.f = av_frame_alloc(); |
|
1793 |
✓✗✓✗ ✗✓ |
130 |
if (!s->previous_picture.f || !s->last_picture.f || !s->picture.f) { |
1794 |
av_frame_free(&s->previous_picture.f); |
||
1795 |
av_frame_free(&s->last_picture.f); |
||
1796 |
av_frame_free(&s->picture.f); |
||
1797 |
return AVERROR(ENOMEM); |
||
1798 |
} |
||
1799 |
|||
1800 |
130 |
ff_pngdsp_init(&s->dsp); |
|
1801 |
|||
1802 |
130 |
return 0; |
|
1803 |
} |
||
1804 |
|||
1805 |
130 |
static av_cold int png_dec_end(AVCodecContext *avctx) |
|
1806 |
{ |
||
1807 |
130 |
PNGDecContext *s = avctx->priv_data; |
|
1808 |
|||
1809 |
130 |
ff_thread_release_buffer(avctx, &s->previous_picture); |
|
1810 |
130 |
av_frame_free(&s->previous_picture.f); |
|
1811 |
130 |
ff_thread_release_buffer(avctx, &s->last_picture); |
|
1812 |
130 |
av_frame_free(&s->last_picture.f); |
|
1813 |
130 |
ff_thread_release_buffer(avctx, &s->picture); |
|
1814 |
130 |
av_frame_free(&s->picture.f); |
|
1815 |
130 |
av_freep(&s->buffer); |
|
1816 |
130 |
s->buffer_size = 0; |
|
1817 |
130 |
av_freep(&s->last_row); |
|
1818 |
130 |
s->last_row_size = 0; |
|
1819 |
130 |
av_freep(&s->tmp_row); |
|
1820 |
130 |
s->tmp_row_size = 0; |
|
1821 |
|||
1822 |
130 |
return 0; |
|
1823 |
} |
||
1824 |
|||
1825 |
#if CONFIG_APNG_DECODER |
||
1826 |
AVCodec ff_apng_decoder = { |
||
1827 |
.name = "apng", |
||
1828 |
.long_name = NULL_IF_CONFIG_SMALL("APNG (Animated Portable Network Graphics) image"), |
||
1829 |
.type = AVMEDIA_TYPE_VIDEO, |
||
1830 |
.id = AV_CODEC_ID_APNG, |
||
1831 |
.priv_data_size = sizeof(PNGDecContext), |
||
1832 |
.init = png_dec_init, |
||
1833 |
.close = png_dec_end, |
||
1834 |
.decode = decode_frame_apng, |
||
1835 |
.update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context), |
||
1836 |
.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS /*| AV_CODEC_CAP_DRAW_HORIZ_BAND*/, |
||
1837 |
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | |
||
1838 |
FF_CODEC_CAP_ALLOCATE_PROGRESS, |
||
1839 |
}; |
||
1840 |
#endif |
||
1841 |
|||
1842 |
#if CONFIG_PNG_DECODER |
||
1843 |
AVCodec ff_png_decoder = { |
||
1844 |
.name = "png", |
||
1845 |
.long_name = NULL_IF_CONFIG_SMALL("PNG (Portable Network Graphics) image"), |
||
1846 |
.type = AVMEDIA_TYPE_VIDEO, |
||
1847 |
.id = AV_CODEC_ID_PNG, |
||
1848 |
.priv_data_size = sizeof(PNGDecContext), |
||
1849 |
.init = png_dec_init, |
||
1850 |
.close = png_dec_end, |
||
1851 |
.decode = decode_frame_png, |
||
1852 |
.update_thread_context = ONLY_IF_THREADS_ENABLED(update_thread_context), |
||
1853 |
.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS /*| AV_CODEC_CAP_DRAW_HORIZ_BAND*/, |
||
1854 |
.caps_internal = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM | FF_CODEC_CAP_INIT_THREADSAFE | |
||
1855 |
FF_CODEC_CAP_ALLOCATE_PROGRESS, |
||
1856 |
}; |
||
1857 |
#endif |
||
1858 |
|||
1859 |
#if CONFIG_LSCR_DECODER |
||
1860 |
AVCodec ff_lscr_decoder = { |
||
1861 |
.name = "lscr", |
||
1862 |
.long_name = NULL_IF_CONFIG_SMALL("LEAD Screen Capture"), |
||
1863 |
.type = AVMEDIA_TYPE_VIDEO, |
||
1864 |
.id = AV_CODEC_ID_LSCR, |
||
1865 |
.priv_data_size = sizeof(PNGDecContext), |
||
1866 |
.init = png_dec_init, |
||
1867 |
.close = png_dec_end, |
||
1868 |
.decode = decode_frame_lscr, |
||
1869 |
.flush = decode_flush, |
||
1870 |
.capabilities = AV_CODEC_CAP_DR1 /*| AV_CODEC_CAP_DRAW_HORIZ_BAND*/, |
||
1871 |
.caps_internal = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM | FF_CODEC_CAP_INIT_THREADSAFE | |
||
1872 |
FF_CODEC_CAP_ALLOCATE_PROGRESS, |
||
1873 |
}; |
||
1874 |
#endif |
Generated by: GCOVR (Version 4.2) |