FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/exr.c
Date: 2022-07-04 00:18:54
Exec Total Coverage
Lines: 843 1277 66.0%
Branches: 451 762 59.2%
Line Branch Exec Source
1 /*
2 * OpenEXR (.exr) image decoder
3 * Copyright (c) 2006 Industrial Light & Magic, a division of Lucas Digital Ltd. LLC
4 * Copyright (c) 2009 Jimmy Christensen
5 *
6 * B44/B44A, Tile, UINT32 added by Jokyo Images support by CNC - French National Center for Cinema
7 *
8 * This file is part of FFmpeg.
9 *
10 * FFmpeg is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
14 *
15 * FFmpeg is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with FFmpeg; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 */
24
25 /**
26 * @file
27 * OpenEXR decoder
28 * @author Jimmy Christensen
29 *
30 * For more information on the OpenEXR format, visit:
31 * http://openexr.com/
32 */
33
34 #include <float.h>
35 #include <zlib.h>
36
37 #include "libavutil/avassert.h"
38 #include "libavutil/common.h"
39 #include "libavutil/imgutils.h"
40 #include "libavutil/intfloat.h"
41 #include "libavutil/avstring.h"
42 #include "libavutil/opt.h"
43 #include "libavutil/color_utils.h"
44
45 #include "avcodec.h"
46 #include "bytestream.h"
47
48 #if HAVE_BIGENDIAN
49 #include "bswapdsp.h"
50 #endif
51
52 #include "codec_internal.h"
53 #include "exrdsp.h"
54 #include "get_bits.h"
55 #include "internal.h"
56 #include "half2float.h"
57 #include "mathops.h"
58 #include "thread.h"
59
60 enum ExrCompr {
61 EXR_RAW,
62 EXR_RLE,
63 EXR_ZIP1,
64 EXR_ZIP16,
65 EXR_PIZ,
66 EXR_PXR24,
67 EXR_B44,
68 EXR_B44A,
69 EXR_DWAA,
70 EXR_DWAB,
71 EXR_UNKN,
72 };
73
74 enum ExrPixelType {
75 EXR_UINT,
76 EXR_HALF,
77 EXR_FLOAT,
78 EXR_UNKNOWN,
79 };
80
81 enum ExrTileLevelMode {
82 EXR_TILE_LEVEL_ONE,
83 EXR_TILE_LEVEL_MIPMAP,
84 EXR_TILE_LEVEL_RIPMAP,
85 EXR_TILE_LEVEL_UNKNOWN,
86 };
87
88 enum ExrTileLevelRound {
89 EXR_TILE_ROUND_UP,
90 EXR_TILE_ROUND_DOWN,
91 EXR_TILE_ROUND_UNKNOWN,
92 };
93
94 typedef struct HuffEntry {
95 uint8_t len;
96 uint16_t sym;
97 uint32_t code;
98 } HuffEntry;
99
100 typedef struct EXRChannel {
101 int xsub, ysub;
102 enum ExrPixelType pixel_type;
103 } EXRChannel;
104
105 typedef struct EXRTileAttribute {
106 int32_t xSize;
107 int32_t ySize;
108 enum ExrTileLevelMode level_mode;
109 enum ExrTileLevelRound level_round;
110 } EXRTileAttribute;
111
112 typedef struct EXRThreadData {
113 uint8_t *uncompressed_data;
114 int uncompressed_size;
115
116 uint8_t *tmp;
117 int tmp_size;
118
119 uint8_t *bitmap;
120 uint16_t *lut;
121
122 uint8_t *ac_data;
123 unsigned ac_size;
124
125 uint8_t *dc_data;
126 unsigned dc_size;
127
128 uint8_t *rle_data;
129 unsigned rle_size;
130
131 uint8_t *rle_raw_data;
132 unsigned rle_raw_size;
133
134 float block[3][64];
135
136 int ysize, xsize;
137
138 int channel_line_size;
139
140 int run_sym;
141 HuffEntry *he;
142 uint64_t *freq;
143 VLC vlc;
144 } EXRThreadData;
145
146 typedef struct EXRContext {
147 AVClass *class;
148 AVFrame *picture;
149 AVCodecContext *avctx;
150 ExrDSPContext dsp;
151
152 #if HAVE_BIGENDIAN
153 BswapDSPContext bbdsp;
154 #endif
155
156 enum ExrCompr compression;
157 enum ExrPixelType pixel_type;
158 int channel_offsets[4]; // 0 = red, 1 = green, 2 = blue and 3 = alpha
159 const AVPixFmtDescriptor *desc;
160
161 int w, h;
162 uint32_t sar;
163 int32_t xmax, xmin;
164 int32_t ymax, ymin;
165 uint32_t xdelta, ydelta;
166
167 int scan_lines_per_block;
168
169 EXRTileAttribute tile_attr; /* header data attribute of tile */
170 int is_tile; /* 0 if scanline, 1 if tile */
171 int is_multipart;
172 int current_part;
173
174 int is_luma;/* 1 if there is an Y plane */
175
176 GetByteContext gb;
177 const uint8_t *buf;
178 int buf_size;
179
180 EXRChannel *channels;
181 int nb_channels;
182 int current_channel_offset;
183 uint32_t chunk_count;
184
185 EXRThreadData *thread_data;
186
187 const char *layer;
188 int selected_part;
189
190 enum AVColorTransferCharacteristic apply_trc_type;
191 float gamma;
192 union av_intfloat32 gamma_table[65536];
193
194 uint32_t mantissatable[2048];
195 uint32_t exponenttable[64];
196 uint16_t offsettable[64];
197 } EXRContext;
198
199 14690 static int zip_uncompress(EXRContext *s, const uint8_t *src, int compressed_size,
200 int uncompressed_size, EXRThreadData *td)
201 {
202 14690 unsigned long dest_len = uncompressed_size;
203
204
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 14690 if (uncompress(td->tmp, &dest_len, src, compressed_size) != Z_OK ||
205
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 14690 dest_len != uncompressed_size)
206 ✗ return AVERROR_INVALIDDATA;
207
208 av_assert1(uncompressed_size % 2 == 0);
209
210 14690 s->dsp.predictor(td->tmp, uncompressed_size);
211 14690 s->dsp.reorder_pixels(td->uncompressed_data, td->tmp, uncompressed_size);
212
213 14690 return 0;
214 }
215
216 5859 static int rle(uint8_t *dst, const uint8_t *src,
217 int compressed_size, int uncompressed_size)
218 {
219 5859 uint8_t *d = dst;
220 5859 const int8_t *s = src;
221 5859 int ssize = compressed_size;
222 5859 int dsize = uncompressed_size;
223 5859 uint8_t *dend = d + dsize;
224 int count;
225
226
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 903212 while (ssize > 0) {
227 897353 count = *s++;
228
229
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 897353 if (count < 0) {
230 626279 count = -count;
231
232
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233
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 626279 (ssize -= count + 1) < 0)
234 ✗ return AVERROR_INVALIDDATA;
235
236
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 24969227 while (count--)
237 24342948 *d++ = *s++;
238 } else {
239 271074 count++;
240
241
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242
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 271074 (ssize -= 2) < 0)
243 ✗ return AVERROR_INVALIDDATA;
244
245
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 6799310 while (count--)
246 6528236 *d++ = *s;
247
248 271074 s++;
249 }
250 }
251
252
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 5859 if (dend != d)
253 ✗ return AVERROR_INVALIDDATA;
254
255 5859 return 0;
256 }
257
258 5859 static int rle_uncompress(EXRContext *ctx, const uint8_t *src, int compressed_size,
259 int uncompressed_size, EXRThreadData *td)
260 {
261 5859 rle(td->tmp, src, compressed_size, uncompressed_size);
262
263 av_assert1(uncompressed_size % 2 == 0);
264
265 5859 ctx->dsp.predictor(td->tmp, uncompressed_size);
266 5859 ctx->dsp.reorder_pixels(td->uncompressed_data, td->tmp, uncompressed_size);
267
268 5859 return 0;
269 }
270
271 #define USHORT_RANGE (1 << 16)
272 #define BITMAP_SIZE (1 << 13)
273
274 60 static uint16_t reverse_lut(const uint8_t *bitmap, uint16_t *lut)
275 {
276 60 int i, k = 0;
277
278
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 3932220 for (i = 0; i < USHORT_RANGE; i++)
279
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 3932160 if ((i == 0) || (bitmap[i >> 3] & (1 << (i & 7))))
280 30770 lut[k++] = i;
281
282 60 i = k - 1;
283
284 60 memset(lut + k, 0, (USHORT_RANGE - k) * 2);
285
286 60 return i;
287 }
288
289 60 static void apply_lut(const uint16_t *lut, uint16_t *dst, int dsize)
290 {
291 int i;
292
293
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 1641504 for (i = 0; i < dsize; ++i)
294 1641444 dst[i] = lut[dst[i]];
295 60 }
296
297 #define HUF_ENCBITS 16 // literal (value) bit length
298 #define HUF_ENCSIZE ((1 << HUF_ENCBITS) + 1) // encoding table size
299
300 60 static void huf_canonical_code_table(uint64_t *freq)
301 {
302 60 uint64_t c, n[59] = { 0 };
303 int i;
304
305
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 3932280 for (i = 0; i < HUF_ENCSIZE; i++)
306 3932220 n[freq[i]] += 1;
307
308 60 c = 0;
309
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 3540 for (i = 58; i > 0; --i) {
310 3480 uint64_t nc = ((c + n[i]) >> 1);
311 3480 n[i] = c;
312 3480 c = nc;
313 }
314
315
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 3932280 for (i = 0; i < HUF_ENCSIZE; ++i) {
316 3932220 int l = freq[i];
317
318
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 3932220 if (l > 0)
319 12834 freq[i] = l | (n[l]++ << 6);
320 }
321 60 }
322
323 #define SHORT_ZEROCODE_RUN 59
324 #define LONG_ZEROCODE_RUN 63
325 #define SHORTEST_LONG_RUN (2 + LONG_ZEROCODE_RUN - SHORT_ZEROCODE_RUN)
326 #define LONGEST_LONG_RUN (255 + SHORTEST_LONG_RUN)
327
328 60 static int huf_unpack_enc_table(GetByteContext *gb,
329 int32_t im, int32_t iM, uint64_t *freq)
330 {
331 GetBitContext gbit;
332 60 int ret = init_get_bits8(&gbit, gb->buffer, bytestream2_get_bytes_left(gb));
333
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 60 if (ret < 0)
334 ✗ return ret;
335
336
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 33272 for (; im <= iM; im++) {
337 33212 uint64_t l = freq[im] = get_bits(&gbit, 6);
338
339
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 33212 if (l == LONG_ZEROCODE_RUN) {
340 16678 int zerun = get_bits(&gbit, 8) + SHORTEST_LONG_RUN;
341
342
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 16678 if (im + zerun > iM + 1)
343 ✗ return AVERROR_INVALIDDATA;
344
345
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346 3911252 freq[im++] = 0;
347
348 16678 im--;
349
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 16534 } else if (l >= SHORT_ZEROCODE_RUN) {
350 2106 int zerun = l - SHORT_ZEROCODE_RUN + 2;
351
352
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 2106 if (im + zerun > iM + 1)
353 ✗ return AVERROR_INVALIDDATA;
354
355
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 8646 while (zerun--)
356 6540 freq[im++] = 0;
357
358 2106 im--;
359 }
360 }
361
362 60 bytestream2_skip(gb, (get_bits_count(&gbit) + 7) / 8);
363 60 huf_canonical_code_table(freq);
364
365 60 return 0;
366 }
367
368 60 static int huf_build_dec_table(EXRContext *s,
369 EXRThreadData *td, int im, int iM)
370 {
371 60 int j = 0;
372
373 60 td->run_sym = -1;
374
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 3932220 for (int i = im; i < iM; i++) {
375 3932160 td->he[j].sym = i;
376 3932160 td->he[j].len = td->freq[i] & 63;
377 3932160 td->he[j].code = td->freq[i] >> 6;
378
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 3932160 if (td->he[j].len > 32) {
379 ✗ avpriv_request_sample(s->avctx, "Too big code length");
380 ✗ return AVERROR_PATCHWELCOME;
381 }
382
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 3932160 if (td->he[j].len > 0)
383 12774 j++;
384 else
385 3919386 td->run_sym = i;
386 }
387
388
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 60 if (im > 0)
389 ✗ td->run_sym = 0;
390
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 60 else if (iM < 65535)
391 ✗ td->run_sym = 65535;
392
393
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 60 if (td->run_sym == -1) {
394 ✗ avpriv_request_sample(s->avctx, "No place for run symbol");
395 ✗ return AVERROR_PATCHWELCOME;
396 }
397
398 60 td->he[j].sym = td->run_sym;
399 60 td->he[j].len = td->freq[iM] & 63;
400
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 60 if (td->he[j].len > 32) {
401 ✗ avpriv_request_sample(s->avctx, "Too big code length");
402 ✗ return AVERROR_PATCHWELCOME;
403 }
404 60 td->he[j].code = td->freq[iM] >> 6;
405 60 j++;
406
407 60 ff_free_vlc(&td->vlc);
408 60 return ff_init_vlc_sparse(&td->vlc, 12, j,
409 60 &td->he[0].len, sizeof(td->he[0]), sizeof(td->he[0].len),
410 60 &td->he[0].code, sizeof(td->he[0]), sizeof(td->he[0].code),
411 60 &td->he[0].sym, sizeof(td->he[0]), sizeof(td->he[0].sym), 0);
412 }
413
414 60 static int huf_decode(VLC *vlc, GetByteContext *gb, int nbits, int run_sym,
415 int no, uint16_t *out)
416 {
417 GetBitContext gbit;
418 60 int oe = 0;
419
420 60 init_get_bits(&gbit, gb->buffer, nbits);
421
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 427022 while (get_bits_left(&gbit) > 0 && oe < no) {
422 426962 uint16_t x = get_vlc2(&gbit, vlc->table, 12, 3);
423
424
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 426962 if (x == run_sym) {
425 6774 int run = get_bits(&gbit, 8);
426 uint16_t fill;
427
428
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 6774 if (oe == 0 || oe + run > no)
429 ✗ return AVERROR_INVALIDDATA;
430
431 6774 fill = out[oe - 1];
432
433
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 1228030 while (run-- > 0)
434 1221256 out[oe++] = fill;
435 } else {
436 420188 out[oe++] = x;
437 }
438 }
439
440 60 return 0;
441 }
442
443 60 static int huf_uncompress(EXRContext *s,
444 EXRThreadData *td,
445 GetByteContext *gb,
446 uint16_t *dst, int dst_size)
447 {
448 int32_t im, iM;
449 uint32_t nBits;
450 int ret;
451
452 60 im = bytestream2_get_le32(gb);
453 60 iM = bytestream2_get_le32(gb);
454 60 bytestream2_skip(gb, 4);
455 60 nBits = bytestream2_get_le32(gb);
456
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 60 if (im < 0 || im >= HUF_ENCSIZE ||
457
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 60 iM < 0 || iM >= HUF_ENCSIZE)
458 ✗ return AVERROR_INVALIDDATA;
459
460 60 bytestream2_skip(gb, 4);
461
462
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 60 if (!td->freq)
463 14 td->freq = av_malloc_array(HUF_ENCSIZE, sizeof(*td->freq));
464
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 60 if (!td->he)
465 14 td->he = av_calloc(HUF_ENCSIZE, sizeof(*td->he));
466
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 60 if (!td->freq || !td->he) {
467 ✗ ret = AVERROR(ENOMEM);
468 ✗ return ret;
469 }
470
471 60 memset(td->freq, 0, sizeof(*td->freq) * HUF_ENCSIZE);
472
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 60 if ((ret = huf_unpack_enc_table(gb, im, iM, td->freq)) < 0)
473 ✗ return ret;
474
475
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 60 if (nBits > 8 * bytestream2_get_bytes_left(gb)) {
476 ✗ ret = AVERROR_INVALIDDATA;
477 ✗ return ret;
478 }
479
480
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 60 if ((ret = huf_build_dec_table(s, td, im, iM)) < 0)
481 ✗ return ret;
482 60 return huf_decode(&td->vlc, gb, nBits, td->run_sym, dst_size, dst);
483 }
484
485 2183418 static inline void wdec14(uint16_t l, uint16_t h, uint16_t *a, uint16_t *b)
486 {
487 2183418 int16_t ls = l;
488 2183418 int16_t hs = h;
489 2183418 int hi = hs;
490 2183418 int ai = ls + (hi & 1) + (hi >> 1);
491 2183418 int16_t as = ai;
492 2183418 int16_t bs = ai - hi;
493
494 2183418 *a = as;
495 2183418 *b = bs;
496 2183418 }
497
498 #define NBITS 16
499 #define A_OFFSET (1 << (NBITS - 1))
500 #define MOD_MASK ((1 << NBITS) - 1)
501
502 ✗ static inline void wdec16(uint16_t l, uint16_t h, uint16_t *a, uint16_t *b)
503 {
504 ✗ int m = l;
505 ✗ int d = h;
506 ✗ int bb = (m - (d >> 1)) & MOD_MASK;
507 ✗ int aa = (d + bb - A_OFFSET) & MOD_MASK;
508 ✗ *b = bb;
509 ✗ *a = aa;
510 }
511
512 204 static void wav_decode(uint16_t *in, int nx, int ox,
513 int ny, int oy, uint16_t mx)
514 {
515 204 int w14 = (mx < (1 << 14));
516 204 int n = (nx > ny) ? ny : nx;
517 204 int p = 1;
518 int p2;
519
520
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 1386 while (p <= n)
521 1182 p <<= 1;
522
523 204 p >>= 1;
524 204 p2 = p;
525 204 p >>= 1;
526
527
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 1182 while (p >= 1) {
528 978 uint16_t *py = in;
529 978 uint16_t *ey = in + oy * (ny - p2);
530 uint16_t i00, i01, i10, i11;
531 978 int oy1 = oy * p;
532 978 int oy2 = oy * p2;
533 978 int ox1 = ox * p;
534 978 int ox2 = ox * p2;
535
536
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 6858 for (; py <= ey; py += oy2) {
537 5880 uint16_t *px = py;
538 5880 uint16_t *ex = py + ox * (nx - p2);
539
540
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 551382 for (; px <= ex; px += ox2) {
541 545502 uint16_t *p01 = px + ox1;
542 545502 uint16_t *p10 = px + oy1;
543 545502 uint16_t *p11 = p10 + ox1;
544
545
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 545502 if (w14) {
546 545502 wdec14(*px, *p10, &i00, &i10);
547 545502 wdec14(*p01, *p11, &i01, &i11);
548 545502 wdec14(i00, i01, px, p01);
549 545502 wdec14(i10, i11, p10, p11);
550 } else {
551 ✗ wdec16(*px, *p10, &i00, &i10);
552 ✗ wdec16(*p01, *p11, &i01, &i11);
553 ✗ wdec16(i00, i01, px, p01);
554 ✗ wdec16(i10, i11, p10, p11);
555 }
556 }
557
558
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 5880 if (nx & p) {
559 648 uint16_t *p10 = px + oy1;
560
561
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 648 if (w14)
562 648 wdec14(*px, *p10, &i00, p10);
563 else
564 ✗ wdec16(*px, *p10, &i00, p10);
565
566 648 *px = i00;
567 }
568 }
569
570
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 978 if (ny & p) {
571 30 uint16_t *px = py;
572 30 uint16_t *ex = py + ox * (nx - p2);
573
574
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 792 for (; px <= ex; px += ox2) {
575 762 uint16_t *p01 = px + ox1;
576
577
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 762 if (w14)
578 762 wdec14(*px, *p01, &i00, p01);
579 else
580 ✗ wdec16(*px, *p01, &i00, p01);
581
582 762 *px = i00;
583 }
584 }
585
586 978 p2 = p;
587 978 p >>= 1;
588 }
589 204 }
590
591 60 static int piz_uncompress(EXRContext *s, const uint8_t *src, int ssize,
592 int dsize, EXRThreadData *td)
593 {
594 GetByteContext gb;
595 uint16_t maxval, min_non_zero, max_non_zero;
596 uint16_t *ptr;
597 60 uint16_t *tmp = (uint16_t *)td->tmp;
598 uint16_t *out;
599 uint16_t *in;
600 int ret, i, j;
601 int pixel_half_size;/* 1 for half, 2 for float and uint32 */
602 EXRChannel *channel;
603 int tmp_offset;
604
605
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 60 if (!td->bitmap)
606 14 td->bitmap = av_malloc(BITMAP_SIZE);
607
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 60 if (!td->lut)
608 14 td->lut = av_malloc(1 << 17);
609
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 60 if (!td->bitmap || !td->lut) {
610 ✗ av_freep(&td->bitmap);
611 ✗ av_freep(&td->lut);
612 ✗ return AVERROR(ENOMEM);
613 }
614
615 60 bytestream2_init(&gb, src, ssize);
616 60 min_non_zero = bytestream2_get_le16(&gb);
617 60 max_non_zero = bytestream2_get_le16(&gb);
618
619
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 60 if (max_non_zero >= BITMAP_SIZE)
620 ✗ return AVERROR_INVALIDDATA;
621
622 60 memset(td->bitmap, 0, FFMIN(min_non_zero, BITMAP_SIZE));
623
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 60 if (min_non_zero <= max_non_zero)
624 60 bytestream2_get_buffer(&gb, td->bitmap + min_non_zero,
625 60 max_non_zero - min_non_zero + 1);
626 60 memset(td->bitmap + max_non_zero + 1, 0, BITMAP_SIZE - max_non_zero - 1);
627
628 60 maxval = reverse_lut(td->bitmap, td->lut);
629
630 60 bytestream2_skip(&gb, 4);
631 60 ret = huf_uncompress(s, td, &gb, tmp, dsize / sizeof(uint16_t));
632
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 60 if (ret)
633 ✗ return ret;
634
635 60 ptr = tmp;
636
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 240 for (i = 0; i < s->nb_channels; i++) {
637 180 channel = &s->channels[i];
638
639
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 180 if (channel->pixel_type == EXR_HALF)
640 156 pixel_half_size = 1;
641 else
642 24 pixel_half_size = 2;
643
644
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 384 for (j = 0; j < pixel_half_size; j++)
645 204 wav_decode(ptr + j, td->xsize, pixel_half_size, td->ysize,
646 204 td->xsize * pixel_half_size, maxval);
647 180 ptr += td->xsize * td->ysize * pixel_half_size;
648 }
649
650 60 apply_lut(td->lut, tmp, dsize / sizeof(uint16_t));
651
652 60 out = (uint16_t *)td->uncompressed_data;
653
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 1842 for (i = 0; i < td->ysize; i++) {
654 1782 tmp_offset = 0;
655
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 7128 for (j = 0; j < s->nb_channels; j++) {
656 5346 channel = &s->channels[j];
657
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 5346 if (channel->pixel_type == EXR_HALF)
658 4578 pixel_half_size = 1;
659 else
660 768 pixel_half_size = 2;
661
662 5346 in = tmp + tmp_offset * td->xsize * td->ysize + i * td->xsize * pixel_half_size;
663 5346 tmp_offset += pixel_half_size;
664
665 #if HAVE_BIGENDIAN
666 s->bbdsp.bswap16_buf(out, in, td->xsize * pixel_half_size);
667 #else
668 5346 memcpy(out, in, td->xsize * 2 * pixel_half_size);
669 #endif
670 5346 out += td->xsize * pixel_half_size;
671 }
672 }
673
674 60 return 0;
675 }
676
677 122 static int pxr24_uncompress(EXRContext *s, const uint8_t *src,
678 int compressed_size, int uncompressed_size,
679 EXRThreadData *td)
680 {
681 122 unsigned long dest_len, expected_len = 0;
682 122 const uint8_t *in = td->tmp;
683 uint8_t *out;
684 int c, i, j;
685
686
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 558 for (i = 0; i < s->nb_channels; i++) {
687
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 436 if (s->channels[i].pixel_type == EXR_FLOAT) {
688 62 expected_len += (td->xsize * td->ysize * 3);/* PRX 24 store float in 24 bit instead of 32 */
689
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 374 } else if (s->channels[i].pixel_type == EXR_HALF) {
690 362 expected_len += (td->xsize * td->ysize * 2);
691 } else {//UINT 32
692 12 expected_len += (td->xsize * td->ysize * 4);
693 }
694 }
695
696 122 dest_len = expected_len;
697
698
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 122 if (uncompress(td->tmp, &dest_len, src, compressed_size) != Z_OK) {
699 ✗ return AVERROR_INVALIDDATA;
700
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 122 } else if (dest_len != expected_len) {
701 ✗ return AVERROR_INVALIDDATA;
702 }
703
704 122 out = td->uncompressed_data;
705
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 1900 for (i = 0; i < td->ysize; i++)
706
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 7678 for (c = 0; c < s->nb_channels; c++) {
707 5900 EXRChannel *channel = &s->channels[c];
708 const uint8_t *ptr[4];
709 5900 uint32_t pixel = 0;
710
711
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 5900 switch (channel->pixel_type) {
712 496 case EXR_FLOAT:
713 496 ptr[0] = in;
714 496 ptr[1] = ptr[0] + td->xsize;
715 496 ptr[2] = ptr[1] + td->xsize;
716 496 in = ptr[2] + td->xsize;
717
718
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 6448 for (j = 0; j < td->xsize; ++j) {
719 5952 uint32_t diff = ((unsigned)*(ptr[0]++) << 24) |
720 5952 (*(ptr[1]++) << 16) |
721 5952 (*(ptr[2]++) << 8);
722 5952 pixel += diff;
723 5952 bytestream_put_le32(&out, pixel);
724 }
725 496 break;
726 5302 case EXR_HALF:
727 5302 ptr[0] = in;
728 5302 ptr[1] = ptr[0] + td->xsize;
729 5302 in = ptr[1] + td->xsize;
730
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 3851380 for (j = 0; j < td->xsize; j++) {
731 3846078 uint32_t diff = (*(ptr[0]++) << 8) | *(ptr[1]++);
732
733 3846078 pixel += diff;
734 3846078 bytestream_put_le16(&out, pixel);
735 }
736 5302 break;
737 102 case EXR_UINT:
738 102 ptr[0] = in;
739 102 ptr[1] = ptr[0] + s->xdelta;
740 102 ptr[2] = ptr[1] + s->xdelta;
741 102 ptr[3] = ptr[2] + s->xdelta;
742 102 in = ptr[3] + s->xdelta;
743
744
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 1380 for (j = 0; j < s->xdelta; ++j) {
745 1278 uint32_t diff = ((uint32_t)*(ptr[0]++) << 24) |
746 1278 (*(ptr[1]++) << 16) |
747 1278 (*(ptr[2]++) << 8 ) |
748 1278 (*(ptr[3]++));
749 1278 pixel += diff;
750 1278 bytestream_put_le32(&out, pixel);
751 }
752 102 break;
753 ✗ default:
754 ✗ return AVERROR_INVALIDDATA;
755 }
756 }
757
758 122 return 0;
759 }
760
761 118558 static void unpack_14(const uint8_t b[14], uint16_t s[16])
762 {
763 118558 unsigned short shift = (b[ 2] >> 2) & 15;
764 118558 unsigned short bias = (0x20 << shift);
765 int i;
766
767 118558 s[ 0] = (b[0] << 8) | b[1];
768
769 118558 s[ 4] = s[ 0] + ((((b[ 2] << 4) | (b[ 3] >> 4)) & 0x3f) << shift) - bias;
770 118558 s[ 8] = s[ 4] + ((((b[ 3] << 2) | (b[ 4] >> 6)) & 0x3f) << shift) - bias;
771 118558 s[12] = s[ 8] + ((b[ 4] & 0x3f) << shift) - bias;
772
773 118558 s[ 1] = s[ 0] + ((b[ 5] >> 2) << shift) - bias;
774 118558 s[ 5] = s[ 4] + ((((b[ 5] << 4) | (b[ 6] >> 4)) & 0x3f) << shift) - bias;
775 118558 s[ 9] = s[ 8] + ((((b[ 6] << 2) | (b[ 7] >> 6)) & 0x3f) << shift) - bias;
776 118558 s[13] = s[12] + ((b[ 7] & 0x3f) << shift) - bias;
777
778 118558 s[ 2] = s[ 1] + ((b[ 8] >> 2) << shift) - bias;
779 118558 s[ 6] = s[ 5] + ((((b[ 8] << 4) | (b[ 9] >> 4)) & 0x3f) << shift) - bias;
780 118558 s[10] = s[ 9] + ((((b[ 9] << 2) | (b[10] >> 6)) & 0x3f) << shift) - bias;
781 118558 s[14] = s[13] + ((b[10] & 0x3f) << shift) - bias;
782
783 118558 s[ 3] = s[ 2] + ((b[11] >> 2) << shift) - bias;
784 118558 s[ 7] = s[ 6] + ((((b[11] << 4) | (b[12] >> 4)) & 0x3f) << shift) - bias;
785 118558 s[11] = s[10] + ((((b[12] << 2) | (b[13] >> 6)) & 0x3f) << shift) - bias;
786 118558 s[15] = s[14] + ((b[13] & 0x3f) << shift) - bias;
787
788
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 2015486 for (i = 0; i < 16; ++i) {
789
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 1896928 if (s[i] & 0x8000)
790 1884694 s[i] &= 0x7fff;
791 else
792 12234 s[i] = ~s[i];
793 }
794 118558 }
795
796 212 static void unpack_3(const uint8_t b[3], uint16_t s[16])
797 {
798 int i;
799
800 212 s[0] = (b[0] << 8) | b[1];
801
802
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 212 if (s[0] & 0x8000)
803 210 s[0] &= 0x7fff;
804 else
805 2 s[0] = ~s[0];
806
807
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 3392 for (i = 1; i < 16; i++)
808 3180 s[i] = s[0];
809 212 }
810
811
812 46 static int b44_uncompress(EXRContext *s, const uint8_t *src, int compressed_size,
813 int uncompressed_size, EXRThreadData *td) {
814 46 const int8_t *sr = src;
815 46 int stay_to_uncompress = compressed_size;
816 int nb_b44_block_w, nb_b44_block_h;
817 int index_tl_x, index_tl_y, index_out, index_tmp;
818 uint16_t tmp_buffer[16]; /* B44 use 4x4 half float pixel */
819 int c, iY, iX, y, x;
820 46 int target_channel_offset = 0;
821
822 /* calc B44 block count */
823 46 nb_b44_block_w = td->xsize / 4;
824
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 46 if ((td->xsize % 4) != 0)
825 26 nb_b44_block_w++;
826
827 46 nb_b44_block_h = td->ysize / 4;
828
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 46 if ((td->ysize % 4) != 0)
829 12 nb_b44_block_h++;
830
831
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 312 for (c = 0; c < s->nb_channels; c++) {
832
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 266 if (s->channels[c].pixel_type == EXR_HALF) {/* B44 only compress half float data */
833
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 918 for (iY = 0; iY < nb_b44_block_h; iY++) {
834
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 119518 for (iX = 0; iX < nb_b44_block_w; iX++) {/* For each B44 block */
835
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 118770 if (stay_to_uncompress < 3) {
836 ✗ av_log(s, AV_LOG_ERROR, "Not enough data for B44A block: %d", stay_to_uncompress);
837 ✗ return AVERROR_INVALIDDATA;
838 }
839
840
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 118770 if (src[compressed_size - stay_to_uncompress + 2] == 0xfc) { /* B44A block */
841 212 unpack_3(sr, tmp_buffer);
842 212 sr += 3;
843 212 stay_to_uncompress -= 3;
844 } else {/* B44 Block */
845
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 118558 if (stay_to_uncompress < 14) {
846 ✗ av_log(s, AV_LOG_ERROR, "Not enough data for B44 block: %d", stay_to_uncompress);
847 ✗ return AVERROR_INVALIDDATA;
848 }
849 118558 unpack_14(sr, tmp_buffer);
850 118558 sr += 14;
851 118558 stay_to_uncompress -= 14;
852 }
853
854 /* copy data to uncompress buffer (B44 block can exceed target resolution)*/
855 118770 index_tl_x = iX * 4;
856 118770 index_tl_y = iY * 4;
857
858
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 591522 for (y = index_tl_y; y < FFMIN(index_tl_y + 4, td->ysize); y++) {
859
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 2360726 for (x = index_tl_x; x < FFMIN(index_tl_x + 4, td->xsize); x++) {
860 1887974 index_out = target_channel_offset * td->xsize + y * td->channel_line_size + 2 * x;
861 1887974 index_tmp = (y-index_tl_y) * 4 + (x-index_tl_x);
862 1887974 td->uncompressed_data[index_out] = tmp_buffer[index_tmp] & 0xff;
863 1887974 td->uncompressed_data[index_out + 1] = tmp_buffer[index_tmp] >> 8;
864 }
865 }
866 }
867 }
868 170 target_channel_offset += 2;
869 } else {/* Float or UINT 32 channel */
870
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 96 if (stay_to_uncompress < td->ysize * td->xsize * 4) {
871 ✗ av_log(s, AV_LOG_ERROR, "Not enough data for uncompress channel: %d", stay_to_uncompress);
872 ✗ return AVERROR_INVALIDDATA;
873 }
874
875
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 896 for (y = 0; y < td->ysize; y++) {
876 800 index_out = target_channel_offset * td->xsize + y * td->channel_line_size;
877 800 memcpy(&td->uncompressed_data[index_out], sr, td->xsize * 4);
878 800 sr += td->xsize * 4;
879 }
880 96 target_channel_offset += 4;
881
882 96 stay_to_uncompress -= td->ysize * td->xsize * 4;
883 }
884 }
885
886 46 return 0;
887 }
888
889 ✗ static int ac_uncompress(EXRContext *s, GetByteContext *gb, float *block)
890 {
891 ✗ int ret = 0, n = 1;
892
893 ✗ while (n < 64) {
894 ✗ uint16_t val = bytestream2_get_ne16(gb);
895
896 ✗ if (val == 0xff00) {
897 ✗ n = 64;
898 ✗ } else if ((val >> 8) == 0xff) {
899 ✗ n += val & 0xff;
900 } else {
901 ✗ ret = n;
902 ✗ block[ff_zigzag_direct[n]] = av_int2float(half2float(val,
903 ✗ s->mantissatable,
904 ✗ s->exponenttable,
905 ✗ s->offsettable));
906 ✗ n++;
907 }
908 }
909
910 ✗ return ret;
911 }
912
913 ✗ static void idct_1d(float *blk, int step)
914 {
915 ✗ const float a = .5f * cosf( M_PI / 4.f);
916 ✗ const float b = .5f * cosf( M_PI / 16.f);
917 ✗ const float c = .5f * cosf( M_PI / 8.f);
918 ✗ const float d = .5f * cosf(3.f*M_PI / 16.f);
919 ✗ const float e = .5f * cosf(5.f*M_PI / 16.f);
920 ✗ const float f = .5f * cosf(3.f*M_PI / 8.f);
921 ✗ const float g = .5f * cosf(7.f*M_PI / 16.f);
922
923 float alpha[4], beta[4], theta[4], gamma[4];
924
925 ✗ alpha[0] = c * blk[2 * step];
926 ✗ alpha[1] = f * blk[2 * step];
927 ✗ alpha[2] = c * blk[6 * step];
928 ✗ alpha[3] = f * blk[6 * step];
929
930 ✗ beta[0] = b * blk[1 * step] + d * blk[3 * step] + e * blk[5 * step] + g * blk[7 * step];
931 ✗ beta[1] = d * blk[1 * step] - g * blk[3 * step] - b * blk[5 * step] - e * blk[7 * step];
932 ✗ beta[2] = e * blk[1 * step] - b * blk[3 * step] + g * blk[5 * step] + d * blk[7 * step];
933 ✗ beta[3] = g * blk[1 * step] - e * blk[3 * step] + d * blk[5 * step] - b * blk[7 * step];
934
935 ✗ theta[0] = a * (blk[0 * step] + blk[4 * step]);
936 ✗ theta[3] = a * (blk[0 * step] - blk[4 * step]);
937
938 ✗ theta[1] = alpha[0] + alpha[3];
939 ✗ theta[2] = alpha[1] - alpha[2];
940
941 ✗ gamma[0] = theta[0] + theta[1];
942 ✗ gamma[1] = theta[3] + theta[2];
943 ✗ gamma[2] = theta[3] - theta[2];
944 ✗ gamma[3] = theta[0] - theta[1];
945
946 ✗ blk[0 * step] = gamma[0] + beta[0];
947 ✗ blk[1 * step] = gamma[1] + beta[1];
948 ✗ blk[2 * step] = gamma[2] + beta[2];
949 ✗ blk[3 * step] = gamma[3] + beta[3];
950
951 ✗ blk[4 * step] = gamma[3] - beta[3];
952 ✗ blk[5 * step] = gamma[2] - beta[2];
953 ✗ blk[6 * step] = gamma[1] - beta[1];
954 ✗ blk[7 * step] = gamma[0] - beta[0];
955 }
956
957 ✗ static void dct_inverse(float *block)
958 {
959 ✗ for (int i = 0; i < 8; i++)
960 ✗ idct_1d(block + i, 8);
961
962 ✗ for (int i = 0; i < 8; i++) {
963 ✗ idct_1d(block, 1);
964 ✗ block += 8;
965 }
966 }
967
968 ✗ static void convert(float y, float u, float v,
969 float *b, float *g, float *r)
970 {
971 ✗ *r = y + 1.5747f * v;
972 ✗ *g = y - 0.1873f * u - 0.4682f * v;
973 ✗ *b = y + 1.8556f * u;
974 }
975
976 ✗ static float to_linear(float x, float scale)
977 {
978 ✗ float ax = fabsf(x);
979
980 ✗ if (ax <= 1.f) {
981 ✗ return FFSIGN(x) * powf(ax, 2.2f * scale);
982 } else {
983 ✗ const float log_base = expf(2.2f * scale);
984
985 ✗ return FFSIGN(x) * powf(log_base, ax - 1.f);
986 }
987 }
988
989 ✗ static int dwa_uncompress(EXRContext *s, const uint8_t *src, int compressed_size,
990 int uncompressed_size, EXRThreadData *td)
991 {
992 int64_t version, lo_usize, lo_size;
993 int64_t ac_size, dc_size, rle_usize, rle_csize, rle_raw_size;
994 int64_t ac_count, dc_count, ac_compression;
995 ✗ const int dc_w = td->xsize >> 3;
996 ✗ const int dc_h = td->ysize >> 3;
997 GetByteContext gb, agb;
998 int skip, ret;
999
1000 ✗ if (compressed_size <= 88)
1001 ✗ return AVERROR_INVALIDDATA;
1002
1003 ✗ version = AV_RL64(src + 0);
1004 ✗ if (version != 2)
1005 ✗ return AVERROR_INVALIDDATA;
1006
1007 ✗ lo_usize = AV_RL64(src + 8);
1008 ✗ lo_size = AV_RL64(src + 16);
1009 ✗ ac_size = AV_RL64(src + 24);
1010 ✗ dc_size = AV_RL64(src + 32);
1011 ✗ rle_csize = AV_RL64(src + 40);
1012 ✗ rle_usize = AV_RL64(src + 48);
1013 ✗ rle_raw_size = AV_RL64(src + 56);
1014 ✗ ac_count = AV_RL64(src + 64);
1015 ✗ dc_count = AV_RL64(src + 72);
1016 ✗ ac_compression = AV_RL64(src + 80);
1017
1018 ✗ if ( compressed_size < (uint64_t)(lo_size | ac_size | dc_size | rle_csize) || compressed_size < 88LL + lo_size + ac_size + dc_size + rle_csize
1019 ✗ || ac_count > (uint64_t)INT_MAX/2
1020 )
1021 ✗ return AVERROR_INVALIDDATA;
1022
1023 ✗ bytestream2_init(&gb, src + 88, compressed_size - 88);
1024 ✗ skip = bytestream2_get_le16(&gb);
1025 ✗ if (skip < 2)
1026 ✗ return AVERROR_INVALIDDATA;
1027
1028 ✗ bytestream2_skip(&gb, skip - 2);
1029
1030 ✗ if (lo_size > 0) {
1031 ✗ if (lo_usize > uncompressed_size)
1032 ✗ return AVERROR_INVALIDDATA;
1033 ✗ bytestream2_skip(&gb, lo_size);
1034 }
1035
1036 ✗ if (ac_size > 0) {
1037 unsigned long dest_len;
1038 ✗ GetByteContext agb = gb;
1039
1040 ✗ if (ac_count > 3LL * td->xsize * s->scan_lines_per_block)
1041 ✗ return AVERROR_INVALIDDATA;
1042
1043 ✗ dest_len = ac_count * 2LL;
1044
1045 ✗ av_fast_padded_malloc(&td->ac_data, &td->ac_size, dest_len);
1046 ✗ if (!td->ac_data)
1047 ✗ return AVERROR(ENOMEM);
1048
1049 ✗ switch (ac_compression) {
1050 ✗ case 0:
1051 ✗ ret = huf_uncompress(s, td, &agb, (int16_t *)td->ac_data, ac_count);
1052 ✗ if (ret < 0)
1053 ✗ return ret;
1054 ✗ break;
1055 ✗ case 1:
1056 ✗ if (uncompress(td->ac_data, &dest_len, agb.buffer, ac_size) != Z_OK ||
1057 ✗ dest_len != ac_count * 2LL)
1058 ✗ return AVERROR_INVALIDDATA;
1059 ✗ break;
1060 ✗ default:
1061 ✗ return AVERROR_INVALIDDATA;
1062 }
1063
1064 ✗ bytestream2_skip(&gb, ac_size);
1065 }
1066
1067 {
1068 unsigned long dest_len;
1069 ✗ GetByteContext agb = gb;
1070
1071 ✗ if (dc_count != dc_w * dc_h * 3)
1072 ✗ return AVERROR_INVALIDDATA;
1073
1074 ✗ dest_len = dc_count * 2LL;
1075
1076 ✗ av_fast_padded_malloc(&td->dc_data, &td->dc_size, FFALIGN(dest_len, 64) * 2);
1077 ✗ if (!td->dc_data)
1078 ✗ return AVERROR(ENOMEM);
1079
1080 ✗ if (uncompress(td->dc_data + FFALIGN(dest_len, 64), &dest_len, agb.buffer, dc_size) != Z_OK ||
1081 ✗ (dest_len != dc_count * 2LL))
1082 ✗ return AVERROR_INVALIDDATA;
1083
1084 ✗ s->dsp.predictor(td->dc_data + FFALIGN(dest_len, 64), dest_len);
1085 ✗ s->dsp.reorder_pixels(td->dc_data, td->dc_data + FFALIGN(dest_len, 64), dest_len);
1086
1087 ✗ bytestream2_skip(&gb, dc_size);
1088 }
1089
1090 ✗ if (rle_raw_size > 0 && rle_csize > 0 && rle_usize > 0) {
1091 ✗ unsigned long dest_len = rle_usize;
1092
1093 ✗ av_fast_padded_malloc(&td->rle_data, &td->rle_size, rle_usize);
1094 ✗ if (!td->rle_data)
1095 ✗ return AVERROR(ENOMEM);
1096
1097 ✗ av_fast_padded_malloc(&td->rle_raw_data, &td->rle_raw_size, rle_raw_size);
1098 ✗ if (!td->rle_raw_data)
1099 ✗ return AVERROR(ENOMEM);
1100
1101 ✗ if (uncompress(td->rle_data, &dest_len, gb.buffer, rle_csize) != Z_OK ||
1102 ✗ (dest_len != rle_usize))
1103 ✗ return AVERROR_INVALIDDATA;
1104
1105 ✗ ret = rle(td->rle_raw_data, td->rle_data, rle_usize, rle_raw_size);
1106 ✗ if (ret < 0)
1107 ✗ return ret;
1108 ✗ bytestream2_skip(&gb, rle_csize);
1109 }
1110
1111 ✗ bytestream2_init(&agb, td->ac_data, ac_count * 2);
1112
1113 ✗ for (int y = 0; y < td->ysize; y += 8) {
1114 ✗ for (int x = 0; x < td->xsize; x += 8) {
1115 ✗ memset(td->block, 0, sizeof(td->block));
1116
1117 ✗ for (int j = 0; j < 3; j++) {
1118 ✗ float *block = td->block[j];
1119 ✗ const int idx = (x >> 3) + (y >> 3) * dc_w + dc_w * dc_h * j;
1120 ✗ uint16_t *dc = (uint16_t *)td->dc_data;
1121 union av_intfloat32 dc_val;
1122
1123 ✗ dc_val.i = half2float(dc[idx], s->mantissatable,
1124 ✗ s->exponenttable, s->offsettable);
1125
1126 ✗ block[0] = dc_val.f;
1127 ✗ ac_uncompress(s, &agb, block);
1128 ✗ dct_inverse(block);
1129 }
1130
1131 {
1132 ✗ const float scale = s->pixel_type == EXR_FLOAT ? 2.f : 1.f;
1133 ✗ const int o = s->nb_channels == 4;
1134 ✗ float *bo = ((float *)td->uncompressed_data) +
1135 ✗ y * td->xsize * s->nb_channels + td->xsize * (o + 0) + x;
1136 ✗ float *go = ((float *)td->uncompressed_data) +
1137 ✗ y * td->xsize * s->nb_channels + td->xsize * (o + 1) + x;
1138 ✗ float *ro = ((float *)td->uncompressed_data) +
1139 ✗ y * td->xsize * s->nb_channels + td->xsize * (o + 2) + x;
1140 ✗ float *yb = td->block[0];
1141 ✗ float *ub = td->block[1];
1142 ✗ float *vb = td->block[2];
1143
1144 ✗ for (int yy = 0; yy < 8; yy++) {
1145 ✗ for (int xx = 0; xx < 8; xx++) {
1146 ✗ const int idx = xx + yy * 8;
1147
1148 ✗ convert(yb[idx], ub[idx], vb[idx], &bo[xx], &go[xx], &ro[xx]);
1149
1150 ✗ bo[xx] = to_linear(bo[xx], scale);
1151 ✗ go[xx] = to_linear(go[xx], scale);
1152 ✗ ro[xx] = to_linear(ro[xx], scale);
1153 }
1154
1155 ✗ bo += td->xsize * s->nb_channels;
1156 ✗ go += td->xsize * s->nb_channels;
1157 ✗ ro += td->xsize * s->nb_channels;
1158 }
1159 }
1160 }
1161 }
1162
1163 ✗ if (s->nb_channels < 4)
1164 ✗ return 0;
1165
1166 ✗ for (int y = 0; y < td->ysize && td->rle_raw_data; y++) {
1167 ✗ uint32_t *ao = ((uint32_t *)td->uncompressed_data) + y * td->xsize * s->nb_channels;
1168 ✗ uint8_t *ai0 = td->rle_raw_data + y * td->xsize;
1169 ✗ uint8_t *ai1 = td->rle_raw_data + y * td->xsize + rle_raw_size / 2;
1170
1171 ✗ for (int x = 0; x < td->xsize; x++) {
1172 ✗ uint16_t ha = ai0[x] | (ai1[x] << 8);
1173
1174 ✗ ao[x] = half2float(ha, s->mantissatable, s->exponenttable, s->offsettable);
1175 }
1176 }
1177
1178 ✗ return 0;
1179 }
1180
1181 42782 static int decode_block(AVCodecContext *avctx, void *tdata,
1182 int jobnr, int threadnr)
1183 {
1184 42782 EXRContext *s = avctx->priv_data;
1185 42782 AVFrame *const p = s->picture;
1186 42782 EXRThreadData *td = &s->thread_data[threadnr];
1187 42782 const uint8_t *channel_buffer[4] = { 0 };
1188 42782 const uint8_t *buf = s->buf;
1189 uint64_t line_offset, uncompressed_size;
1190 uint8_t *ptr;
1191 uint32_t data_size;
1192 42782 int line, col = 0;
1193 uint64_t tile_x, tile_y, tile_level_x, tile_level_y;
1194 const uint8_t *src;
1195
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 42782 int step = s->desc->flags & AV_PIX_FMT_FLAG_FLOAT ? 4 : 2 * s->desc->nb_components;
1196 42782 int bxmin = 0, axmax = 0, window_xoffset = 0;
1197 int window_xmin, window_xmax, window_ymin, window_ymax;
1198 int data_xoffset, data_yoffset, data_window_offset, xsize, ysize;
1199 42782 int i, x, buf_size = s->buf_size;
1200 int c, rgb_channel_count;
1201 42782 float one_gamma = 1.0f / s->gamma;
1202 42782 avpriv_trc_function trc_func = avpriv_get_trc_function_from_trc(s->apply_trc_type);
1203 int ret;
1204
1205 42782 line_offset = AV_RL64(s->gb.buffer + jobnr * 8);
1206
1207
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 42782 if (s->is_tile) {
1208
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 208 if (buf_size < 20 || line_offset > buf_size - 20)
1209 ✗ return AVERROR_INVALIDDATA;
1210
1211 208 src = buf + line_offset + 20;
1212
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 208 if (s->is_multipart)
1213 ✗ src += 4;
1214
1215 208 tile_x = AV_RL32(src - 20);
1216 208 tile_y = AV_RL32(src - 16);
1217 208 tile_level_x = AV_RL32(src - 12);
1218 208 tile_level_y = AV_RL32(src - 8);
1219
1220 208 data_size = AV_RL32(src - 4);
1221
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 208 if (data_size <= 0 || data_size > buf_size - line_offset - 20)
1222 ✗ return AVERROR_INVALIDDATA;
1223
1224
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 208 if (tile_level_x || tile_level_y) { /* tile level, is not the full res level */
1225 ✗ avpriv_report_missing_feature(s->avctx, "Subres tile before full res tile");
1226 ✗ return AVERROR_PATCHWELCOME;
1227 }
1228
1229
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 208 if (tile_x && s->tile_attr.xSize + (int64_t)FFMAX(s->xmin, 0) >= INT_MAX / tile_x )
1230 ✗ return AVERROR_INVALIDDATA;
1231
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 208 if (tile_y && s->tile_attr.ySize + (int64_t)FFMAX(s->ymin, 0) >= INT_MAX / tile_y )
1232 ✗ return AVERROR_INVALIDDATA;
1233
1234 208 line = s->ymin + s->tile_attr.ySize * tile_y;
1235 208 col = s->tile_attr.xSize * tile_x;
1236
1237
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 208 if (line < s->ymin || line > s->ymax ||
1238
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 208 s->xmin + col < s->xmin || s->xmin + col > s->xmax)
1239 ✗ return AVERROR_INVALIDDATA;
1240
1241 208 td->ysize = FFMIN(s->tile_attr.ySize, s->ydelta - tile_y * s->tile_attr.ySize);
1242 208 td->xsize = FFMIN(s->tile_attr.xSize, s->xdelta - tile_x * s->tile_attr.xSize);
1243
1244
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 208 if (td->xsize * (uint64_t)s->current_channel_offset > INT_MAX)
1245 ✗ return AVERROR_INVALIDDATA;
1246
1247 208 td->channel_line_size = td->xsize * s->current_channel_offset;/* uncompress size of one line */
1248 208 uncompressed_size = td->channel_line_size * (uint64_t)td->ysize;/* uncompress size of the block */
1249 } else {
1250
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 42574 if (buf_size < 8 || line_offset > buf_size - 8)
1251 ✗ return AVERROR_INVALIDDATA;
1252
1253 42574 src = buf + line_offset + 8;
1254
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 42574 if (s->is_multipart)
1255 ✗ src += 4;
1256 42574 line = AV_RL32(src - 8);
1257
1258
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 42574 if (line < s->ymin || line > s->ymax)
1259 ✗ return AVERROR_INVALIDDATA;
1260
1261 42574 data_size = AV_RL32(src - 4);
1262
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 42574 if (data_size <= 0 || data_size > buf_size - line_offset - 8)
1263 ✗ return AVERROR_INVALIDDATA;
1264
1265 42574 td->ysize = FFMIN(s->scan_lines_per_block, s->ymax - line + 1); /* s->ydelta - line ?? */
1266 42574 td->xsize = s->xdelta;
1267
1268
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 42574 if (td->xsize * (uint64_t)s->current_channel_offset > INT_MAX)
1269 ✗ return AVERROR_INVALIDDATA;
1270
1271 42574 td->channel_line_size = td->xsize * s->current_channel_offset;/* uncompress size of one line */
1272 42574 uncompressed_size = td->channel_line_size * (uint64_t)td->ysize;/* uncompress size of the block */
1273
1274
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 42574 if ((s->compression == EXR_RAW && (data_size != uncompressed_size ||
1275
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 13486 line_offset > buf_size - uncompressed_size)) ||
1276
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 42574 (s->compression != EXR_RAW && (data_size > uncompressed_size ||
1277
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 29088 line_offset > buf_size - data_size))) {
1278 ✗ return AVERROR_INVALIDDATA;
1279 }
1280 }
1281
1282 42782 window_xmin = FFMIN(avctx->width, FFMAX(0, s->xmin + col));
1283 42782 window_xmax = FFMIN(avctx->width, FFMAX(0, s->xmin + col + td->xsize));
1284 42782 window_ymin = FFMIN(avctx->height, FFMAX(0, line ));
1285 42782 window_ymax = FFMIN(avctx->height, FFMAX(0, line + td->ysize));
1286 42782 xsize = window_xmax - window_xmin;
1287 42782 ysize = window_ymax - window_ymin;
1288
1289 /* tile or scanline not visible skip decoding */
1290
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 42782 if (xsize <= 0 || ysize <= 0)
1291 866 return 0;
1292
1293 /* is the first tile or is a scanline */
1294
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 41916 if(col == 0) {
1295 41836 window_xmin = 0;
1296 /* pixels to add at the left of the display window */
1297 41836 window_xoffset = FFMAX(0, s->xmin);
1298 /* bytes to add at the left of the display window */
1299 41836 bxmin = window_xoffset * step;
1300 }
1301
1302 /* is the last tile or is a scanline */
1303
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 41916 if(col + td->xsize == s->xdelta) {
1304 41836 window_xmax = avctx->width;
1305 /* bytes to add at the right of the display window */
1306 41836 axmax = FFMAX(0, (avctx->width - (s->xmax + 1))) * step;
1307 }
1308
1309
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 41916 if (avctx->max_pixels && uncompressed_size > avctx->max_pixels * 16LL)
1310 ✗ return AVERROR_INVALIDDATA;
1311
1312
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 41916 if (data_size < uncompressed_size || s->is_tile) { /* td->tmp is use for tile reorganization */
1313 20803 av_fast_padded_malloc(&td->tmp, &td->tmp_size, uncompressed_size);
1314
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 20803 if (!td->tmp)
1315 ✗ return AVERROR(ENOMEM);
1316 }
1317
1318
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 41916 if (data_size < uncompressed_size) {
1319 20777 av_fast_padded_malloc(&td->uncompressed_data,
1320 20777 &td->uncompressed_size, uncompressed_size + 64);/* Force 64 padding for AVX2 reorder_pixels dst */
1321
1322
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 20777 if (!td->uncompressed_data)
1323 ✗ return AVERROR(ENOMEM);
1324
1325 20777 ret = AVERROR_INVALIDDATA;
1326
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 20777 switch (s->compression) {
1327 14690 case EXR_ZIP1:
1328 case EXR_ZIP16:
1329 14690 ret = zip_uncompress(s, src, data_size, uncompressed_size, td);
1330 14690 break;
1331 60 case EXR_PIZ:
1332 60 ret = piz_uncompress(s, src, data_size, uncompressed_size, td);
1333 60 break;
1334 122 case EXR_PXR24:
1335 122 ret = pxr24_uncompress(s, src, data_size, uncompressed_size, td);
1336 122 break;
1337 5859 case EXR_RLE:
1338 5859 ret = rle_uncompress(s, src, data_size, uncompressed_size, td);
1339 5859 break;
1340 46 case EXR_B44:
1341 case EXR_B44A:
1342 46 ret = b44_uncompress(s, src, data_size, uncompressed_size, td);
1343 46 break;
1344 ✗ case EXR_DWAA:
1345 case EXR_DWAB:
1346 ✗ ret = dwa_uncompress(s, src, data_size, uncompressed_size, td);
1347 ✗ break;
1348 }
1349
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 20777 if (ret < 0) {
1350 ✗ av_log(avctx, AV_LOG_ERROR, "decode_block() failed.\n");
1351 ✗ return ret;
1352 }
1353 20777 src = td->uncompressed_data;
1354 }
1355
1356 /* offsets to crop data outside display window */
1357
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 41916 data_xoffset = FFABS(FFMIN(0, s->xmin + col)) * (s->pixel_type == EXR_HALF ? 2 : 4);
1358
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 41916 data_yoffset = FFABS(FFMIN(0, line));
1359 41916 data_window_offset = (data_yoffset * td->channel_line_size) + data_xoffset;
1360
1361
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 41916 if (!s->is_luma) {
1362 29548 channel_buffer[0] = src + (td->xsize * s->channel_offsets[0]) + data_window_offset;
1363 29548 channel_buffer[1] = src + (td->xsize * s->channel_offsets[1]) + data_window_offset;
1364 29548 channel_buffer[2] = src + (td->xsize * s->channel_offsets[2]) + data_window_offset;
1365 29548 rgb_channel_count = 3;
1366 } else { /* put y data in the first channel_buffer */
1367 12368 channel_buffer[0] = src + (td->xsize * s->channel_offsets[1]) + data_window_offset;
1368 12368 rgb_channel_count = 1;
1369 }
1370
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 41916 if (s->channel_offsets[3] >= 0)
1371 16606 channel_buffer[3] = src + (td->xsize * s->channel_offsets[3]) + data_window_offset;
1372
1373
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 41916 if (s->desc->flags & AV_PIX_FMT_FLAG_FLOAT) {
1374 /* todo: change this when a floating point pixel format with luma with alpha is implemented */
1375
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 41896 int channel_count = s->channel_offsets[3] >= 0 ? 4 : rgb_channel_count;
1376
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 41896 if (s->is_luma) {
1377 12368 channel_buffer[1] = channel_buffer[0];
1378 12368 channel_buffer[2] = channel_buffer[0];
1379 }
1380
1381
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 159486 for (c = 0; c < channel_count; c++) {
1382 117590 int plane = s->desc->comp[c].plane;
1383 117590 ptr = p->data[plane] + window_ymin * p->linesize[plane] + (window_xmin * 4);
1384
1385
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 300046 for (i = 0; i < ysize; i++, ptr += p->linesize[plane]) {
1386 const uint8_t *src;
1387 union av_intfloat32 *ptr_x;
1388
1389 182456 src = channel_buffer[c];
1390 182456 ptr_x = (union av_intfloat32 *)ptr;
1391
1392 // Zero out the start if xmin is not 0
1393 182456 memset(ptr_x, 0, bxmin);
1394 182456 ptr_x += window_xoffset;
1395
1396
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 182456 if (s->pixel_type == EXR_FLOAT ||
1397
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 49296 s->compression == EXR_DWAA ||
1398
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 182456 s->compression == EXR_DWAB) {
1399 // 32-bit
1400 union av_intfloat32 t;
1401
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 133160 if (trc_func && c < 3) {
1402 ✗ for (x = 0; x < xsize; x++) {
1403 ✗ t.i = bytestream_get_le32(&src);
1404 ✗ t.f = trc_func(t.f);
1405 ✗ *ptr_x++ = t;
1406 }
1407
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 133160 } else if (one_gamma != 1.f) {
1408 ✗ for (x = 0; x < xsize; x++) {
1409 ✗ t.i = bytestream_get_le32(&src);
1410 ✗ if (t.f > 0.0f && c < 3) /* avoid negative values */
1411 ✗ t.f = powf(t.f, one_gamma);
1412 ✗ *ptr_x++ = t;
1413 }
1414 } else {
1415
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✓ Branch 1 taken 133160 times.
 45706424 for (x = 0; x < xsize; x++) {
1416 45573264 t.i = bytestream_get_le32(&src);
1417 45573264 *ptr_x++ = t;
1418 }
1419 }
1420
1/2
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 49296 } else if (s->pixel_type == EXR_HALF) {
1421 // 16-bit
1422
3/4
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✓ Branch 2 taken 6082 times.
✗ Branch 3 not taken.
 49296 if (c < 3 || !trc_func) {
1423
2/2
✓ Branch 0 taken 21028194 times.
✓ Branch 1 taken 49296 times.
 21077490 for (x = 0; x < xsize; x++) {
1424 21028194 *ptr_x++ = s->gamma_table[bytestream_get_le16(&src)];
1425 }
1426 } else {
1427 ✗ for (x = 0; x < xsize; x++) {
1428 ✗ ptr_x[0].i = half2float(bytestream_get_le16(&src),
1429 ✗ s->mantissatable,
1430 ✗ s->exponenttable,
1431 ✗ s->offsettable);
1432 ✗ ptr_x++;
1433 }
1434 }
1435 }
1436
1437 // Zero out the end if xmax+1 is not w
1438 182456 memset(ptr_x, 0, axmax);
1439 182456 channel_buffer[c] += td->channel_line_size;
1440 }
1441 }
1442 } else {
1443
1444 av_assert1(s->pixel_type == EXR_UINT);
1445 20 ptr = p->data[0] + window_ymin * p->linesize[0] + (window_xmin * s->desc->nb_components * 2);
1446
1447
2/2
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✓ Branch 1 taken 20 times.
 370 for (i = 0; i < ysize; i++, ptr += p->linesize[0]) {
1448
1449 const uint8_t * a;
1450 const uint8_t *rgb[3];
1451 uint16_t *ptr_x;
1452
1453
2/2
✓ Branch 0 taken 1050 times.
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 1400 for (c = 0; c < rgb_channel_count; c++) {
1454 1050 rgb[c] = channel_buffer[c];
1455 }
1456
1457
1/2
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✓ Branch 1 taken 350 times.
 350 if (channel_buffer[3])
1458 ✗ a = channel_buffer[3];
1459
1460 350 ptr_x = (uint16_t *) ptr;
1461
1462 // Zero out the start if xmin is not 0
1463 350 memset(ptr_x, 0, bxmin);
1464 350 ptr_x += window_xoffset * s->desc->nb_components;
1465
1466
2/2
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✓ Branch 1 taken 350 times.
 10968 for (x = 0; x < xsize; x++) {
1467
2/2
✓ Branch 0 taken 31854 times.
✓ Branch 1 taken 10618 times.
 42472 for (c = 0; c < rgb_channel_count; c++) {
1468 31854 *ptr_x++ = bytestream_get_le32(&rgb[c]) >> 16;
1469 }
1470
1471
1/2
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✓ Branch 1 taken 10618 times.
 10618 if (channel_buffer[3])
1472 ✗ *ptr_x++ = bytestream_get_le32(&a) >> 16;
1473 }
1474
1475 // Zero out the end if xmax+1 is not w
1476 350 memset(ptr_x, 0, axmax);
1477
1478 350 channel_buffer[0] += td->channel_line_size;
1479 350 channel_buffer[1] += td->channel_line_size;
1480 350 channel_buffer[2] += td->channel_line_size;
1481
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✓ Branch 1 taken 350 times.
 350 if (channel_buffer[3])
1482 ✗ channel_buffer[3] += td->channel_line_size;
1483 }
1484 }
1485
1486 41916 return 0;
1487 }
1488
1489 ✗ static void skip_header_chunk(EXRContext *s)
1490 {
1491 ✗ GetByteContext *gb = &s->gb;
1492
1493 ✗ while (bytestream2_get_bytes_left(gb) > 0) {
1494 ✗ if (!bytestream2_peek_byte(gb))
1495 ✗ break;
1496
1497 // Process unknown variables
1498 ✗ for (int i = 0; i < 2; i++) // value_name and value_type
1499 ✗ while (bytestream2_get_byte(gb) != 0);
1500
1501 // Skip variable length
1502 ✗ bytestream2_skip(gb, bytestream2_get_le32(gb));
1503 }
1504 }
1505
1506 /**
1507 * Check if the variable name corresponds to its data type.
1508 *
1509 * @param s the EXRContext
1510 * @param value_name name of the variable to check
1511 * @param value_type type of the variable to check
1512 * @param minimum_length minimum length of the variable data
1513 *
1514 * @return bytes to read containing variable data
1515 * -1 if variable is not found
1516 * 0 if buffer ended prematurely
1517 */
1518 32478 static int check_header_variable(EXRContext *s,
1519 const char *value_name,
1520 const char *value_type,
1521 unsigned int minimum_length)
1522 {
1523 32478 GetByteContext *gb = &s->gb;
1524 32478 int var_size = -1;
1525
1526
1/2
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✗ Branch 2 not taken.
 32478 if (bytestream2_get_bytes_left(gb) >= minimum_length &&
1527
2/2
✓ Branch 0 taken 2166 times.
✓ Branch 1 taken 30312 times.
 32478 !strcmp(gb->buffer, value_name)) {
1528 // found value_name, jump to value_type (null terminated strings)
1529 2166 gb->buffer += strlen(value_name) + 1;
1530
1/2
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✗ Branch 1 not taken.
 2166 if (!strcmp(gb->buffer, value_type)) {
1531 2166 gb->buffer += strlen(value_type) + 1;
1532 2166 var_size = bytestream2_get_le32(gb);
1533 // don't go read past boundaries
1534
1/2
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✓ Branch 2 taken 2166 times.
 2166 if (var_size > bytestream2_get_bytes_left(gb))
1535 ✗ var_size = 0;
1536 } else {
1537 // value_type not found, reset the buffer
1538 ✗ gb->buffer -= strlen(value_name) + 1;
1539 ✗ av_log(s->avctx, AV_LOG_WARNING,
1540 "Unknown data type %s for header variable %s.\n",
1541 value_type, value_name);
1542 }
1543 }
1544
1545 32478 return var_size;
1546 }
1547
1548 316 static int decode_header(EXRContext *s, AVFrame *frame)
1549 {
1550 316 AVDictionary *metadata = NULL;
1551 316 GetByteContext *gb = &s->gb;
1552 int magic_number, version, flags;
1553 316 int layer_match = 0;
1554 int ret;
1555 316 int dup_channels = 0;
1556
1557 316 s->current_channel_offset = 0;
1558 316 s->xmin = ~0;
1559 316 s->xmax = ~0;
1560 316 s->ymin = ~0;
1561 316 s->ymax = ~0;
1562 316 s->xdelta = ~0;
1563 316 s->ydelta = ~0;
1564 316 s->channel_offsets[0] = -1;
1565 316 s->channel_offsets[1] = -1;
1566 316 s->channel_offsets[2] = -1;
1567 316 s->channel_offsets[3] = -1;
1568 316 s->pixel_type = EXR_UNKNOWN;
1569 316 s->compression = EXR_UNKN;
1570 316 s->nb_channels = 0;
1571 316 s->w = 0;
1572 316 s->h = 0;
1573 316 s->tile_attr.xSize = -1;
1574 316 s->tile_attr.ySize = -1;
1575 316 s->is_tile = 0;
1576 316 s->is_multipart = 0;
1577 316 s->is_luma = 0;
1578 316 s->current_part = 0;
1579
1580
1/2
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✓ Branch 2 taken 316 times.
 316 if (bytestream2_get_bytes_left(gb) < 10) {
1581 ✗ av_log(s->avctx, AV_LOG_ERROR, "Header too short to parse.\n");
1582 ✗ return AVERROR_INVALIDDATA;
1583 }
1584
1585 316 magic_number = bytestream2_get_le32(gb);
1586
1/2
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✓ Branch 1 taken 316 times.
 316 if (magic_number != 20000630) {
1587 /* As per documentation of OpenEXR, it is supposed to be
1588 * int 20000630 little-endian */
1589 ✗ av_log(s->avctx, AV_LOG_ERROR, "Wrong magic number %d.\n", magic_number);
1590 ✗ return AVERROR_INVALIDDATA;
1591 }
1592
1593 316 version = bytestream2_get_byte(gb);
1594
1/2
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✓ Branch 1 taken 316 times.
 316 if (version != 2) {
1595 ✗ avpriv_report_missing_feature(s->avctx, "Version %d", version);
1596 ✗ return AVERROR_PATCHWELCOME;
1597 }
1598
1599 316 flags = bytestream2_get_le24(gb);
1600
1601
2/2
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✓ Branch 1 taken 272 times.
 316 if (flags & 0x02)
1602 44 s->is_tile = 1;
1603
1/2
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 316 if (flags & 0x10)
1604 ✗ s->is_multipart = 1;
1605
1/2
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 316 if (flags & 0x08) {
1606 ✗ avpriv_report_missing_feature(s->avctx, "deep data");
1607 ✗ return AVERROR_PATCHWELCOME;
1608 }
1609
1610 // Parse the header
1611
1/2
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✗ Branch 2 not taken.
 4396 while (bytestream2_get_bytes_left(gb) > 0) {
1612 int var_size;
1613
1614
1/6
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 4396 while (s->is_multipart && s->current_part < s->selected_part &&
1615 ✗ bytestream2_get_bytes_left(gb) > 0) {
1616 ✗ if (bytestream2_peek_byte(gb)) {
1617 ✗ skip_header_chunk(s);
1618 } else {
1619 ✗ bytestream2_skip(gb, 1);
1620 ✗ if (!bytestream2_peek_byte(gb))
1621 ✗ break;
1622 }
1623 ✗ bytestream2_skip(gb, 1);
1624 ✗ s->current_part++;
1625 }
1626
1627
2/2
✓ Branch 1 taken 316 times.
✓ Branch 2 taken 4080 times.
 4396 if (!bytestream2_peek_byte(gb)) {
1628
1/2
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✗ Branch 1 not taken.
 316 if (!s->is_multipart)
1629 316 break;
1630 ✗ bytestream2_skip(gb, 1);
1631 ✗ if (s->current_part == s->selected_part) {
1632 ✗ while (bytestream2_get_bytes_left(gb) > 0) {
1633 ✗ if (bytestream2_peek_byte(gb)) {
1634 ✗ skip_header_chunk(s);
1635 } else {
1636 ✗ bytestream2_skip(gb, 1);
1637 ✗ if (!bytestream2_peek_byte(gb))
1638 ✗ break;
1639 }
1640 }
1641 }
1642 ✗ if (!bytestream2_peek_byte(gb))
1643 ✗ break;
1644 ✗ s->current_part++;
1645 }
1646
1647
2/2
✓ Branch 1 taken 316 times.
✓ Branch 2 taken 3764 times.
 4080 if ((var_size = check_header_variable(s, "channels",
1648 316 "chlist", 38)) >= 0) {
1649 GetByteContext ch_gb;
1650
1/2
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✓ Branch 1 taken 316 times.
 316 if (!var_size) {
1651 ✗ ret = AVERROR_INVALIDDATA;
1652 ✗ goto fail;
1653 }
1654
1655 316 bytestream2_init(&ch_gb, gb->buffer, var_size);
1656
1657
2/2
✓ Branch 1 taken 1212 times.
✓ Branch 2 taken 316 times.
 1528 while (bytestream2_get_bytes_left(&ch_gb) >= 19) {
1658 EXRChannel *channel;
1659 enum ExrPixelType current_pixel_type;
1660 1212 int channel_index = -1;
1661 int xsub, ysub;
1662
1663
2/2
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✓ Branch 1 taken 940 times.
 1212 if (strcmp(s->layer, "") != 0) {
1664
2/2
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✓ Branch 1 taken 122 times.
 272 if (strncmp(ch_gb.buffer, s->layer, strlen(s->layer)) == 0) {
1665 150 layer_match = 1;
1666 150 av_log(s->avctx, AV_LOG_INFO,
1667 "Channel match layer : %s.\n", ch_gb.buffer);
1668 150 ch_gb.buffer += strlen(s->layer);
1669
1/2
✓ Branch 0 taken 150 times.
✗ Branch 1 not taken.
 150 if (*ch_gb.buffer == '.')
1670 150 ch_gb.buffer++; /* skip dot if not given */
1671 } else {
1672 122 layer_match = 0;
1673 122 av_log(s->avctx, AV_LOG_INFO,
1674 "Channel doesn't match layer : %s.\n", ch_gb.buffer);
1675 }
1676 } else {
1677 940 layer_match = 1;
1678 }
1679
1680
2/2
✓ Branch 0 taken 1090 times.
✓ Branch 1 taken 122 times.
 1212 if (layer_match) { /* only search channel if the layer match is valid */
1681
3/4
✓ Branch 1 taken 836 times.
✓ Branch 2 taken 254 times.
✓ Branch 3 taken 836 times.
✗ Branch 4 not taken.
 1926 if (!av_strcasecmp(ch_gb.buffer, "R") ||
1682
1/2
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✓ Branch 2 taken 836 times.
 1672 !av_strcasecmp(ch_gb.buffer, "X") ||
1683 836 !av_strcasecmp(ch_gb.buffer, "U")) {
1684 254 channel_index = 0;
1685 254 s->is_luma = 0;
1686
3/4
✓ Branch 1 taken 582 times.
✓ Branch 2 taken 254 times.
✗ Branch 3 not taken.
✓ Branch 4 taken 582 times.
 1418 } else if (!av_strcasecmp(ch_gb.buffer, "G") ||
1687 582 !av_strcasecmp(ch_gb.buffer, "V")) {
1688 254 channel_index = 1;
1689 254 s->is_luma = 0;
1690
2/2
✓ Branch 1 taken 62 times.
✓ Branch 2 taken 520 times.
 582 } else if (!av_strcasecmp(ch_gb.buffer, "Y")) {
1691 62 channel_index = 1;
1692 62 s->is_luma = 1;
1693
3/4
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✓ Branch 3 taken 266 times.
✗ Branch 4 not taken.
 786 } else if (!av_strcasecmp(ch_gb.buffer, "B") ||
1694
1/2
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✓ Branch 2 taken 266 times.
 532 !av_strcasecmp(ch_gb.buffer, "Z") ||
1695 266 !av_strcasecmp(ch_gb.buffer, "W")) {
1696 254 channel_index = 2;
1697 254 s->is_luma = 0;
1698
2/2
✓ Branch 1 taken 114 times.
✓ Branch 2 taken 152 times.
 266 } else if (!av_strcasecmp(ch_gb.buffer, "A")) {
1699 114 channel_index = 3;
1700 } else {
1701 152 av_log(s->avctx, AV_LOG_WARNING,
1702 "Unsupported channel %.256s.\n", ch_gb.buffer);
1703 }
1704 }
1705
1706 /* skip until you get a 0 */
1707
3/4
✓ Branch 1 taken 4856 times.
✗ Branch 2 not taken.
✓ Branch 3 taken 3644 times.
✓ Branch 4 taken 1212 times.
 9712 while (bytestream2_get_bytes_left(&ch_gb) > 0 &&
1708 4856 bytestream2_get_byte(&ch_gb))
1709 3644 continue;
1710
1711
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 1212 times.
 1212 if (bytestream2_get_bytes_left(&ch_gb) < 4) {
1712 ✗ av_log(s->avctx, AV_LOG_ERROR, "Incomplete header.\n");
1713 ✗ ret = AVERROR_INVALIDDATA;
1714 ✗ goto fail;
1715 }
1716
1717 1212 current_pixel_type = bytestream2_get_le32(&ch_gb);
1718
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1212 times.
 1212 if (current_pixel_type >= EXR_UNKNOWN) {
1719 ✗ avpriv_report_missing_feature(s->avctx, "Pixel type %d",
1720 current_pixel_type);
1721 ✗ ret = AVERROR_PATCHWELCOME;
1722 ✗ goto fail;
1723 }
1724
1725 1212 bytestream2_skip(&ch_gb, 4);
1726 1212 xsub = bytestream2_get_le32(&ch_gb);
1727 1212 ysub = bytestream2_get_le32(&ch_gb);
1728
1729
2/4
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✗ Branch 1 not taken.
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✓ Branch 3 taken 1212 times.
 1212 if (xsub != 1 || ysub != 1) {
1730 ✗ avpriv_report_missing_feature(s->avctx,
1731 "Subsampling %dx%d",
1732 xsub, ysub);
1733 ✗ ret = AVERROR_PATCHWELCOME;
1734 ✗ goto fail;
1735 }
1736
1737
3/4
✓ Branch 0 taken 938 times.
✓ Branch 1 taken 274 times.
✓ Branch 2 taken 938 times.
✗ Branch 3 not taken.
 1212 if (channel_index >= 0 && s->channel_offsets[channel_index] == -1) { /* channel has not been previously assigned */
1738
2/2
✓ Branch 0 taken 622 times.
✓ Branch 1 taken 316 times.
 938 if (s->pixel_type != EXR_UNKNOWN &&
1739
1/2
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✓ Branch 1 taken 622 times.
 622 s->pixel_type != current_pixel_type) {
1740 ✗ av_log(s->avctx, AV_LOG_ERROR,
1741 "RGB channels not of the same depth.\n");
1742 ✗ ret = AVERROR_INVALIDDATA;
1743 ✗ goto fail;
1744 }
1745 938 s->pixel_type = current_pixel_type;
1746 938 s->channel_offsets[channel_index] = s->current_channel_offset;
1747
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 274 times.
 274 } else if (channel_index >= 0) {
1748 ✗ av_log(s->avctx, AV_LOG_WARNING,
1749 "Multiple channels with index %d.\n", channel_index);
1750 ✗ if (++dup_channels > 10) {
1751 ✗ ret = AVERROR_INVALIDDATA;
1752 ✗ goto fail;
1753 }
1754 }
1755
1756 2424 s->channels = av_realloc(s->channels,
1757 1212 ++s->nb_channels * sizeof(EXRChannel));
1758
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1212 times.
 1212 if (!s->channels) {
1759 ✗ ret = AVERROR(ENOMEM);
1760 ✗ goto fail;
1761 }
1762 1212 channel = &s->channels[s->nb_channels - 1];
1763 1212 channel->pixel_type = current_pixel_type;
1764 1212 channel->xsub = xsub;
1765 1212 channel->ysub = ysub;
1766
1767
2/2
✓ Branch 0 taken 404 times.
✓ Branch 1 taken 808 times.
 1212 if (current_pixel_type == EXR_HALF) {
1768 404 s->current_channel_offset += 2;
1769 } else {/* Float or UINT32 */
1770 808 s->current_channel_offset += 4;
1771 }
1772 }
1773
1774 /* Check if all channels are set with an offset or if the channels
1775 * are causing an overflow */
1776
2/2
✓ Branch 0 taken 254 times.
✓ Branch 1 taken 62 times.
 316 if (!s->is_luma) {/* if we expected to have at least 3 channels */
1777
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 254 times.
 254 if (FFMIN3(s->channel_offsets[0],
1778 s->channel_offsets[1],
1779 s->channel_offsets[2]) < 0) {
1780 ✗ if (s->channel_offsets[0] < 0)
1781 ✗ av_log(s->avctx, AV_LOG_ERROR, "Missing red channel.\n");
1782 ✗ if (s->channel_offsets[1] < 0)
1783 ✗ av_log(s->avctx, AV_LOG_ERROR, "Missing green channel.\n");
1784 ✗ if (s->channel_offsets[2] < 0)
1785 ✗ av_log(s->avctx, AV_LOG_ERROR, "Missing blue channel.\n");
1786 ✗ ret = AVERROR_INVALIDDATA;
1787 ✗ goto fail;
1788 }
1789 }
1790
1791 // skip one last byte and update main gb
1792 316 gb->buffer = ch_gb.buffer + 1;
1793 316 continue;
1794
2/2
✓ Branch 1 taken 316 times.
✓ Branch 2 taken 3448 times.
 3764 } else if ((var_size = check_header_variable(s, "dataWindow", "box2i",
1795 316 31)) >= 0) {
1796 int xmin, ymin, xmax, ymax;
1797
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 316 times.
 316 if (!var_size) {
1798 ✗ ret = AVERROR_INVALIDDATA;
1799 ✗ goto fail;
1800 }
1801
1802 316 xmin = bytestream2_get_le32(gb);
1803 316 ymin = bytestream2_get_le32(gb);
1804 316 xmax = bytestream2_get_le32(gb);
1805 316 ymax = bytestream2_get_le32(gb);
1806
1807
3/6
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✗ Branch 5 not taken.
 316 if (xmin > xmax || ymin > ymax ||
1808
1/2
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✗ Branch 1 not taken.
 316 ymax == INT_MAX || xmax == INT_MAX ||
1809
1/2
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✗ Branch 1 not taken.
 316 (unsigned)xmax - xmin >= INT_MAX ||
1810
1/2
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✓ Branch 1 taken 316 times.
 316 (unsigned)ymax - ymin >= INT_MAX) {
1811 ✗ ret = AVERROR_INVALIDDATA;
1812 ✗ goto fail;
1813 }
1814 316 s->xmin = xmin;
1815 316 s->xmax = xmax;
1816 316 s->ymin = ymin;
1817 316 s->ymax = ymax;
1818 316 s->xdelta = (s->xmax - s->xmin) + 1;
1819 316 s->ydelta = (s->ymax - s->ymin) + 1;
1820
1821 316 continue;
1822
2/2
✓ Branch 1 taken 316 times.
✓ Branch 2 taken 3132 times.
 3448 } else if ((var_size = check_header_variable(s, "displayWindow",
1823 316 "box2i", 34)) >= 0) {
1824 int32_t sx, sy, dx, dy;
1825
1826
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 316 times.
 316 if (!var_size) {
1827 ✗ ret = AVERROR_INVALIDDATA;
1828 ✗ goto fail;
1829 }
1830
1831 316 sx = bytestream2_get_le32(gb);
1832 316 sy = bytestream2_get_le32(gb);
1833 316 dx = bytestream2_get_le32(gb);
1834 316 dy = bytestream2_get_le32(gb);
1835
1836 316 s->w = (unsigned)dx - sx + 1;
1837 316 s->h = (unsigned)dy - sy + 1;
1838
1839 316 continue;
1840
2/2
✓ Branch 1 taken 316 times.
✓ Branch 2 taken 2816 times.
 3132 } else if ((var_size = check_header_variable(s, "lineOrder",
1841 316 "lineOrder", 25)) >= 0) {
1842 int line_order;
1843
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 316 times.
 316 if (!var_size) {
1844 ✗ ret = AVERROR_INVALIDDATA;
1845 ✗ goto fail;
1846 }
1847
1848 316 line_order = bytestream2_get_byte(gb);
1849 316 av_log(s->avctx, AV_LOG_DEBUG, "line order: %d.\n", line_order);
1850
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 316 times.
 316 if (line_order > 2) {
1851 ✗ av_log(s->avctx, AV_LOG_ERROR, "Unknown line order.\n");
1852 ✗ ret = AVERROR_INVALIDDATA;
1853 ✗ goto fail;
1854 }
1855
1856 316 continue;
1857
2/2
✓ Branch 1 taken 148 times.
✓ Branch 2 taken 2668 times.
 2816 } else if ((var_size = check_header_variable(s, "pixelAspectRatio",
1858 "float", 31)) >= 0) {
1859
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 148 times.
 148 if (!var_size) {
1860 ✗ ret = AVERROR_INVALIDDATA;
1861 ✗ goto fail;
1862 }
1863
1864 148 s->sar = bytestream2_get_le32(gb);
1865
1866 148 continue;
1867
2/2
✓ Branch 1 taken 316 times.
✓ Branch 2 taken 2352 times.
 2668 } else if ((var_size = check_header_variable(s, "compression",
1868 "compression", 29)) >= 0) {
1869
1/2
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✓ Branch 1 taken 316 times.
 316 if (!var_size) {
1870 ✗ ret = AVERROR_INVALIDDATA;
1871 ✗ goto fail;
1872 }
1873
1874
1/2
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✗ Branch 1 not taken.
 316 if (s->compression == EXR_UNKN)
1875 316 s->compression = bytestream2_get_byte(gb);
1876 else {
1877 ✗ bytestream2_skip(gb, 1);
1878 ✗ av_log(s->avctx, AV_LOG_WARNING,
1879 "Found more than one compression attribute.\n");
1880 }
1881
1882 316 continue;
1883
2/2
✓ Branch 1 taken 44 times.
✓ Branch 2 taken 2308 times.
 2352 } else if ((var_size = check_header_variable(s, "tiles",
1884 44 "tiledesc", 22)) >= 0) {
1885 char tileLevel;
1886
1887
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 44 times.
 44 if (!s->is_tile)
1888 ✗ av_log(s->avctx, AV_LOG_WARNING,
1889 "Found tile attribute and scanline flags. Exr will be interpreted as scanline.\n");
1890
1891 44 s->tile_attr.xSize = bytestream2_get_le32(gb);
1892 44 s->tile_attr.ySize = bytestream2_get_le32(gb);
1893
1894 44 tileLevel = bytestream2_get_byte(gb);
1895 44 s->tile_attr.level_mode = tileLevel & 0x0f;
1896 44 s->tile_attr.level_round = (tileLevel >> 4) & 0x0f;
1897
1898
1/2
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 44 if (s->tile_attr.level_mode >= EXR_TILE_LEVEL_UNKNOWN) {
1899 ✗ avpriv_report_missing_feature(s->avctx, "Tile level mode %d",
1900 ✗ s->tile_attr.level_mode);
1901 ✗ ret = AVERROR_PATCHWELCOME;
1902 ✗ goto fail;
1903 }
1904
1905
1/2
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✓ Branch 1 taken 44 times.
 44 if (s->tile_attr.level_round >= EXR_TILE_ROUND_UNKNOWN) {
1906 ✗ avpriv_report_missing_feature(s->avctx, "Tile level round %d",
1907 ✗ s->tile_attr.level_round);
1908 ✗ ret = AVERROR_PATCHWELCOME;
1909 ✗ goto fail;
1910 }
1911
1912 44 continue;
1913
2/2
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✓ Branch 2 taken 2124 times.
 2308 } else if ((var_size = check_header_variable(s, "writer",
1914 184 "string", 1)) >= 0) {
1915 184 uint8_t key[256] = { 0 };
1916
1917 184 bytestream2_get_buffer(gb, key, FFMIN(sizeof(key) - 1, var_size));
1918 184 av_dict_set(&metadata, "writer", key, 0);
1919
1920 184 continue;
1921
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✓ Branch 2 taken 1940 times.
 2124 } else if ((var_size = check_header_variable(s, "framesPerSecond",
1922 "rational", 33)) >= 0) {
1923
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✓ Branch 1 taken 184 times.
 184 if (!var_size) {
1924 ✗ ret = AVERROR_INVALIDDATA;
1925 ✗ goto fail;
1926 }
1927
1928 184 s->avctx->framerate.num = bytestream2_get_le32(gb);
1929 184 s->avctx->framerate.den = bytestream2_get_le32(gb);
1930
1931 184 continue;
1932
2/2
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✓ Branch 2 taken 1932 times.
 1940 } else if ((var_size = check_header_variable(s, "chunkCount",
1933 "int", 23)) >= 0) {
1934
1935 8 s->chunk_count = bytestream2_get_le32(gb);
1936
1937 8 continue;
1938
2/2
✓ Branch 1 taken 18 times.
✓ Branch 2 taken 1914 times.
 1932 } else if ((var_size = check_header_variable(s, "type",
1939 18 "string", 16)) >= 0) {
1940 18 uint8_t key[256] = { 0 };
1941
1942 18 bytestream2_get_buffer(gb, key, FFMIN(sizeof(key) - 1, var_size));
1943
2/2
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✓ Branch 1 taken 10 times.
 18 if (strncmp("scanlineimage", key, var_size) &&
1944
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 8 times.
 8 strncmp("tiledimage", key, var_size))
1945 ✗ return AVERROR_PATCHWELCOME;
1946
1947 18 continue;
1948
1/2
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✓ Branch 2 taken 1914 times.
 1914 } else if ((var_size = check_header_variable(s, "preview",
1949 ✗ "preview", 16)) >= 0) {
1950 ✗ uint32_t pw = bytestream2_get_le32(gb);
1951 ✗ uint32_t ph = bytestream2_get_le32(gb);
1952 ✗ int64_t psize = 4LL * pw * ph;
1953
1954 ✗ if (psize >= bytestream2_get_bytes_left(gb))
1955 ✗ return AVERROR_INVALIDDATA;
1956
1957 ✗ bytestream2_skip(gb, psize);
1958
1959 ✗ continue;
1960 }
1961
1962 // Check if there are enough bytes for a header
1963
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 1914 times.
 1914 if (bytestream2_get_bytes_left(gb) <= 9) {
1964 ✗ av_log(s->avctx, AV_LOG_ERROR, "Incomplete header\n");
1965 ✗ ret = AVERROR_INVALIDDATA;
1966 ✗ goto fail;
1967 }
1968
1969 // Process unknown variables
1970 {
1971 1914 uint8_t name[256] = { 0 };
1972 1914 uint8_t type[256] = { 0 };
1973 1914 uint8_t value[256] = { 0 };
1974 1914 int i = 0, size;
1975
1976
2/2
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✓ Branch 2 taken 1914 times.
 57680 while (bytestream2_get_bytes_left(gb) > 0 &&
1977
2/4
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✗ Branch 1 not taken.
✓ Branch 3 taken 26926 times.
✗ Branch 4 not taken.
 55766 bytestream2_peek_byte(gb) && i < 255) {
1978 26926 name[i++] = bytestream2_get_byte(gb);
1979 }
1980
1981 1914 bytestream2_skip(gb, 1);
1982 1914 i = 0;
1983
2/2
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 21376 while (bytestream2_get_bytes_left(gb) > 0 &&
1984
2/4
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✗ Branch 1 not taken.
✓ Branch 3 taken 8774 times.
✗ Branch 4 not taken.
 19462 bytestream2_peek_byte(gb) && i < 255) {
1985 8774 type[i++] = bytestream2_get_byte(gb);
1986 }
1987 1914 bytestream2_skip(gb, 1);
1988 1914 size = bytestream2_get_le32(gb);
1989
1990 1914 bytestream2_get_buffer(gb, value, FFMIN(sizeof(value) - 1, size));
1991
2/2
✓ Branch 0 taken 160 times.
✓ Branch 1 taken 1754 times.
 1914 if (!strcmp(type, "string"))
1992 160 av_dict_set(&metadata, name, value, 0);
1993 }
1994 }
1995
1996
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 316 times.
 316 if (s->compression == EXR_UNKN) {
1997 ✗ av_log(s->avctx, AV_LOG_ERROR, "Missing compression attribute.\n");
1998 ✗ ret = AVERROR_INVALIDDATA;
1999 ✗ goto fail;
2000 }
2001
2002
2/2
✓ Branch 0 taken 44 times.
✓ Branch 1 taken 272 times.
 316 if (s->is_tile) {
2003
2/4
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✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 44 times.
 44 if (s->tile_attr.xSize < 1 || s->tile_attr.ySize < 1) {
2004 ✗ av_log(s->avctx, AV_LOG_ERROR, "Invalid tile attribute.\n");
2005 ✗ ret = AVERROR_INVALIDDATA;
2006 ✗ goto fail;
2007 }
2008 }
2009
2010
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 316 times.
 316 if (bytestream2_get_bytes_left(gb) <= 0) {
2011 ✗ av_log(s->avctx, AV_LOG_ERROR, "Incomplete frame.\n");
2012 ✗ ret = AVERROR_INVALIDDATA;
2013 ✗ goto fail;
2014 }
2015
2016 316 frame->metadata = metadata;
2017
2018 // aaand we are done
2019 316 bytestream2_skip(gb, 1);
2020 316 return 0;
2021 ✗ fail:
2022 ✗ av_dict_free(&metadata);
2023 ✗ return ret;
2024 }
2025
2026 316 static int decode_frame(AVCodecContext *avctx, AVFrame *picture,
2027 int *got_frame, AVPacket *avpkt)
2028 {
2029 316 EXRContext *s = avctx->priv_data;
2030 316 GetByteContext *gb = &s->gb;
2031 uint8_t *ptr;
2032
2033 int i, y, ret, ymax;
2034 int planes;
2035 int out_line_size;
2036 int nb_blocks; /* nb scanline or nb tile */
2037 uint64_t start_offset_table;
2038 uint64_t start_next_scanline;
2039 PutByteContext offset_table_writer;
2040
2041 316 bytestream2_init(gb, avpkt->data, avpkt->size);
2042
2043
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 316 times.
 316 if ((ret = decode_header(s, picture)) < 0)
2044 ✗ return ret;
2045
2046
2/4
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✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 316 times.
 316 if ((s->compression == EXR_DWAA || s->compression == EXR_DWAB) &&
2047 ✗ s->pixel_type == EXR_HALF) {
2048 ✗ s->current_channel_offset *= 2;
2049 ✗ for (int i = 0; i < 4; i++)
2050 ✗ s->channel_offsets[i] *= 2;
2051 }
2052
2053
2/3
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✓ Branch 1 taken 10 times.
✗ Branch 2 not taken.
 316 switch (s->pixel_type) {
2054 306 case EXR_FLOAT:
2055 case EXR_HALF:
2056
2/2
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✓ Branch 1 taken 192 times.
 306 if (s->channel_offsets[3] >= 0) {
2057
2/2
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✓ Branch 1 taken 2 times.
 114 if (!s->is_luma) {
2058 112 avctx->pix_fmt = AV_PIX_FMT_GBRAPF32;
2059 } else {
2060 /* todo: change this when a floating point pixel format with luma with alpha is implemented */
2061 2 avctx->pix_fmt = AV_PIX_FMT_GBRAPF32;
2062 }
2063 } else {
2064
2/2
✓ Branch 0 taken 132 times.
✓ Branch 1 taken 60 times.
 192 if (!s->is_luma) {
2065 132 avctx->pix_fmt = AV_PIX_FMT_GBRPF32;
2066 } else {
2067 60 avctx->pix_fmt = AV_PIX_FMT_GRAYF32;
2068 }
2069 }
2070 306 break;
2071 10 case EXR_UINT:
2072
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 10 times.
 10 if (s->channel_offsets[3] >= 0) {
2073 ✗ if (!s->is_luma) {
2074 ✗ avctx->pix_fmt = AV_PIX_FMT_RGBA64;
2075 } else {
2076 ✗ avctx->pix_fmt = AV_PIX_FMT_YA16;
2077 }
2078 } else {
2079
1/2
✓ Branch 0 taken 10 times.
✗ Branch 1 not taken.
 10 if (!s->is_luma) {
2080 10 avctx->pix_fmt = AV_PIX_FMT_RGB48;
2081 } else {
2082 ✗ avctx->pix_fmt = AV_PIX_FMT_GRAY16;
2083 }
2084 }
2085 10 break;
2086 ✗ default:
2087 ✗ av_log(avctx, AV_LOG_ERROR, "Missing channel list.\n");
2088 ✗ return AVERROR_INVALIDDATA;
2089 }
2090
2091
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 316 times.
 316 if (s->apply_trc_type != AVCOL_TRC_UNSPECIFIED)
2092 ✗ avctx->color_trc = s->apply_trc_type;
2093
2094
3/5
✓ Branch 0 taken 174 times.
✓ Branch 1 taken 92 times.
✓ Branch 2 taken 50 times.
✗ Branch 3 not taken.
✗ Branch 4 not taken.
 316 switch (s->compression) {
2095 174 case EXR_RAW:
2096 case EXR_RLE:
2097 case EXR_ZIP1:
2098 174 s->scan_lines_per_block = 1;
2099 174 break;
2100 92 case EXR_PXR24:
2101 case EXR_ZIP16:
2102 92 s->scan_lines_per_block = 16;
2103 92 break;
2104 50 case EXR_PIZ:
2105 case EXR_B44:
2106 case EXR_B44A:
2107 case EXR_DWAA:
2108 50 s->scan_lines_per_block = 32;
2109 50 break;
2110 ✗ case EXR_DWAB:
2111 ✗ s->scan_lines_per_block = 256;
2112 ✗ break;
2113 ✗ default:
2114 ✗ avpriv_report_missing_feature(avctx, "Compression %d", s->compression);
2115 ✗ return AVERROR_PATCHWELCOME;
2116 }
2117
2118 /* Verify the xmin, xmax, ymin and ymax before setting the actual image size.
2119 * It's possible for the data window can larger or outside the display window */
2120
2/4
✓ Branch 0 taken 316 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 316 times.
✗ Branch 3 not taken.
 316 if (s->xmin > s->xmax || s->ymin > s->ymax ||
2121
2/4
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✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 316 times.
 316 s->ydelta == 0xFFFFFFFF || s->xdelta == 0xFFFFFFFF) {
2122 ✗ av_log(avctx, AV_LOG_ERROR, "Wrong or missing size information.\n");
2123 ✗ return AVERROR_INVALIDDATA;
2124 }
2125
2126
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 316 times.
 316 if ((ret = ff_set_dimensions(avctx, s->w, s->h)) < 0)
2127 ✗ return ret;
2128
2129 316 ff_set_sar(s->avctx, av_d2q(av_int2float(s->sar), 255));
2130
2131 316 s->desc = av_pix_fmt_desc_get(avctx->pix_fmt);
2132
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 316 times.
 316 if (!s->desc)
2133 ✗ return AVERROR_INVALIDDATA;
2134
2135
2/2
✓ Branch 0 taken 306 times.
✓ Branch 1 taken 10 times.
 316 if (s->desc->flags & AV_PIX_FMT_FLAG_FLOAT) {
2136 306 planes = s->desc->nb_components;
2137 306 out_line_size = avctx->width * 4;
2138 } else {
2139 10 planes = 1;
2140 10 out_line_size = avctx->width * 2 * s->desc->nb_components;
2141 }
2142
2143
2/2
✓ Branch 0 taken 44 times.
✓ Branch 1 taken 272 times.
 316 if (s->is_tile) {
2144 44 nb_blocks = ((s->xdelta + s->tile_attr.xSize - 1) / s->tile_attr.xSize) *
2145 44 ((s->ydelta + s->tile_attr.ySize - 1) / s->tile_attr.ySize);
2146 } else { /* scanline */
2147 272 nb_blocks = (s->ydelta + s->scan_lines_per_block - 1) /
2148 272 s->scan_lines_per_block;
2149 }
2150
2151
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 316 times.
 316 if ((ret = ff_thread_get_buffer(avctx, picture, 0)) < 0)
2152 ✗ return ret;
2153
2154
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 316 times.
 316 if (bytestream2_get_bytes_left(gb)/8 < nb_blocks)
2155 ✗ return AVERROR_INVALIDDATA;
2156
2157 // check offset table and recreate it if need
2158
4/4
✓ Branch 0 taken 272 times.
✓ Branch 1 taken 44 times.
✓ Branch 3 taken 1 times.
✓ Branch 4 taken 271 times.
 316 if (!s->is_tile && bytestream2_peek_le64(gb) == 0) {
2159 1 av_log(s->avctx, AV_LOG_DEBUG, "recreating invalid scanline offset table\n");
2160
2161 1 start_offset_table = bytestream2_tell(gb);
2162 1 start_next_scanline = start_offset_table + nb_blocks * 8;
2163 1 bytestream2_init_writer(&offset_table_writer, &avpkt->data[start_offset_table], nb_blocks * 8);
2164
2165
2/2
✓ Branch 0 taken 8 times.
✓ Branch 1 taken 1 times.
 9 for (y = 0; y < nb_blocks; y++) {
2166 /* write offset of prev scanline in offset table */
2167 8 bytestream2_put_le64(&offset_table_writer, start_next_scanline);
2168
2169 /* get len of next scanline */
2170 8 bytestream2_seek(gb, start_next_scanline + 4, SEEK_SET);/* skip line number */
2171 8 start_next_scanline += (bytestream2_get_le32(gb) + 8);
2172 }
2173 1 bytestream2_seek(gb, start_offset_table, SEEK_SET);
2174 }
2175
2176 // save pointer we are going to use in decode_block
2177 316 s->buf = avpkt->data;
2178 316 s->buf_size = avpkt->size;
2179
2180 // Zero out the start if ymin is not 0
2181
2/2
✓ Branch 0 taken 922 times.
✓ Branch 1 taken 316 times.
 1238 for (i = 0; i < planes; i++) {
2182 922 ptr = picture->data[i];
2183
2/2
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✓ Branch 1 taken 922 times.
 1402 for (y = 0; y < FFMIN(s->ymin, s->h); y++) {
2184 480 memset(ptr, 0, out_line_size);
2185 480 ptr += picture->linesize[i];
2186 }
2187 }
2188
2189 316 s->picture = picture;
2190
2191 316 avctx->execute2(avctx, decode_block, s->thread_data, NULL, nb_blocks);
2192
2193 316 ymax = FFMAX(0, s->ymax + 1);
2194 // Zero out the end if ymax+1 is not h
2195
2/2
✓ Branch 0 taken 8 times.
✓ Branch 1 taken 308 times.
 316 if (ymax < avctx->height)
2196
2/2
✓ Branch 0 taken 24 times.
✓ Branch 1 taken 8 times.
 32 for (i = 0; i < planes; i++) {
2197 24 ptr = picture->data[i] + (ymax * picture->linesize[i]);
2198
2/2
✓ Branch 0 taken 5544 times.
✓ Branch 1 taken 24 times.
 5568 for (y = ymax; y < avctx->height; y++) {
2199 5544 memset(ptr, 0, out_line_size);
2200 5544 ptr += picture->linesize[i];
2201 }
2202 }
2203
2204 316 picture->pict_type = AV_PICTURE_TYPE_I;
2205 316 *got_frame = 1;
2206
2207 316 return avpkt->size;
2208 }
2209
2210 172 static av_cold int decode_init(AVCodecContext *avctx)
2211 {
2212 172 EXRContext *s = avctx->priv_data;
2213 uint32_t i;
2214 union av_intfloat32 t;
2215 172 float one_gamma = 1.0f / s->gamma;
2216 172 avpriv_trc_function trc_func = NULL;
2217
2218 172 half2float_table(s->mantissatable, s->exponenttable, s->offsettable);
2219
2220 172 s->avctx = avctx;
2221
2222 172 ff_exrdsp_init(&s->dsp);
2223
2224 #if HAVE_BIGENDIAN
2225 ff_bswapdsp_init(&s->bbdsp);
2226 #endif
2227
2228 172 trc_func = avpriv_get_trc_function_from_trc(s->apply_trc_type);
2229
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 172 times.
 172 if (trc_func) {
2230 ✗ for (i = 0; i < 65536; ++i) {
2231 ✗ t.i = half2float(i, s->mantissatable, s->exponenttable, s->offsettable);
2232 ✗ t.f = trc_func(t.f);
2233 ✗ s->gamma_table[i] = t;
2234 }
2235 } else {
2236
2/4
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✗ Branch 1 not taken.
✓ Branch 2 taken 172 times.
✗ Branch 3 not taken.
 172 if (one_gamma > 0.9999f && one_gamma < 1.0001f) {
2237
2/2
✓ Branch 0 taken 11272192 times.
✓ Branch 1 taken 172 times.
 11272364 for (i = 0; i < 65536; ++i) {
2238 11272192 s->gamma_table[i].i = half2float(i, s->mantissatable, s->exponenttable, s->offsettable);
2239 }
2240 } else {
2241 ✗ for (i = 0; i < 65536; ++i) {
2242 ✗ t.i = half2float(i, s->mantissatable, s->exponenttable, s->offsettable);
2243 /* If negative value we reuse half value */
2244 ✗ if (t.f <= 0.0f) {
2245 ✗ s->gamma_table[i] = t;
2246 } else {
2247 ✗ t.f = powf(t.f, one_gamma);
2248 ✗ s->gamma_table[i] = t;
2249 }
2250 }
2251 }
2252 }
2253
2254 // allocate thread data, used for non EXR_RAW compression types
2255 172 s->thread_data = av_calloc(avctx->thread_count, sizeof(*s->thread_data));
2256
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 172 times.
 172 if (!s->thread_data)
2257 ✗ return AVERROR(ENOMEM);
2258
2259 172 return 0;
2260 }
2261
2262 172 static av_cold int decode_end(AVCodecContext *avctx)
2263 {
2264 172 EXRContext *s = avctx->priv_data;
2265 int i;
2266
2/2
✓ Branch 0 taken 172 times.
✓ Branch 1 taken 172 times.
 344 for (i = 0; i < avctx->thread_count; i++) {
2267 172 EXRThreadData *td = &s->thread_data[i];
2268 172 av_freep(&td->uncompressed_data);
2269 172 av_freep(&td->tmp);
2270 172 av_freep(&td->bitmap);
2271 172 av_freep(&td->lut);
2272 172 av_freep(&td->he);
2273 172 av_freep(&td->freq);
2274 172 av_freep(&td->ac_data);
2275 172 av_freep(&td->dc_data);
2276 172 av_freep(&td->rle_data);
2277 172 av_freep(&td->rle_raw_data);
2278 172 ff_free_vlc(&td->vlc);
2279 }
2280
2281 172 av_freep(&s->thread_data);
2282 172 av_freep(&s->channels);
2283
2284 172 return 0;
2285 }
2286
2287 #define OFFSET(x) offsetof(EXRContext, x)
2288 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
2289 static const AVOption options[] = {
2290 { "layer", "Set the decoding layer", OFFSET(layer),
2291 AV_OPT_TYPE_STRING, { .str = "" }, 0, 0, VD },
2292 { "part", "Set the decoding part", OFFSET(selected_part),
2293 AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VD },
2294 { "gamma", "Set the float gamma value when decoding", OFFSET(gamma),
2295 AV_OPT_TYPE_FLOAT, { .dbl = 1.0f }, 0.001, FLT_MAX, VD },
2296
2297 // XXX: Note the abuse of the enum using AVCOL_TRC_UNSPECIFIED to subsume the existing gamma option
2298 { "apply_trc", "color transfer characteristics to apply to EXR linear input", OFFSET(apply_trc_type),
2299 AV_OPT_TYPE_INT, {.i64 = AVCOL_TRC_UNSPECIFIED }, 1, AVCOL_TRC_NB-1, VD, "apply_trc_type"},
2300 { "bt709", "BT.709", 0,
2301 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT709 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2302 { "gamma", "gamma", 0,
2303 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_UNSPECIFIED }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2304 { "gamma22", "BT.470 M", 0,
2305 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_GAMMA22 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2306 { "gamma28", "BT.470 BG", 0,
2307 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_GAMMA28 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2308 { "smpte170m", "SMPTE 170 M", 0,
2309 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTE170M }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2310 { "smpte240m", "SMPTE 240 M", 0,
2311 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTE240M }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2312 { "linear", "Linear", 0,
2313 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_LINEAR }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2314 { "log", "Log", 0,
2315 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_LOG }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2316 { "log_sqrt", "Log square root", 0,
2317 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_LOG_SQRT }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2318 { "iec61966_2_4", "IEC 61966-2-4", 0,
2319 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_IEC61966_2_4 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2320 { "bt1361", "BT.1361", 0,
2321 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT1361_ECG }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2322 { "iec61966_2_1", "IEC 61966-2-1", 0,
2323 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_IEC61966_2_1 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2324 { "bt2020_10bit", "BT.2020 - 10 bit", 0,
2325 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT2020_10 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2326 { "bt2020_12bit", "BT.2020 - 12 bit", 0,
2327 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT2020_12 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2328 { "smpte2084", "SMPTE ST 2084", 0,
2329 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTEST2084 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2330 { "smpte428_1", "SMPTE ST 428-1", 0,
2331 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTEST428_1 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
2332
2333 { NULL },
2334 };
2335
2336 static const AVClass exr_class = {
2337 .class_name = "EXR",
2338 .item_name = av_default_item_name,
2339 .option = options,
2340 .version = LIBAVUTIL_VERSION_INT,
2341 };
2342
2343 const FFCodec ff_exr_decoder = {
2344 .p.name = "exr",
2345 .p.long_name = NULL_IF_CONFIG_SMALL("OpenEXR image"),
2346 .p.type = AVMEDIA_TYPE_VIDEO,
2347 .p.id = AV_CODEC_ID_EXR,
2348 .priv_data_size = sizeof(EXRContext),
2349 .init = decode_init,
2350 .close = decode_end,
2351 FF_CODEC_DECODE_CB(decode_frame),
2352 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
2353 AV_CODEC_CAP_SLICE_THREADS,
2354 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
2355 .p.priv_class = &exr_class,
2356 };
2357