FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/exr.c
Date: 2025-04-25 22:50:00
Exec Total Coverage
Lines: 855 1291 66.2%
Functions: 23 31 74.2%
Branches: 461 793 58.1%
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/csp.h"
40 #include "libavutil/imgutils.h"
41 #include "libavutil/intfloat.h"
42 #include "libavutil/avstring.h"
43 #include "libavutil/mem.h"
44 #include "libavutil/opt.h"
45 #include "libavutil/float2half.h"
46 #include "libavutil/half2float.h"
47
48 #include "avcodec.h"
49 #include "bytestream.h"
50
51 #if HAVE_BIGENDIAN
52 #include "bswapdsp.h"
53 #endif
54
55 #include "codec_internal.h"
56 #include "decode.h"
57 #include "exrdsp.h"
58 #include "get_bits.h"
59 #include "mathops.h"
60 #include "thread.h"
61
62 enum ExrCompr {
63 EXR_RAW,
64 EXR_RLE,
65 EXR_ZIP1,
66 EXR_ZIP16,
67 EXR_PIZ,
68 EXR_PXR24,
69 EXR_B44,
70 EXR_B44A,
71 EXR_DWAA,
72 EXR_DWAB,
73 EXR_UNKN,
74 };
75
76 enum ExrPixelType {
77 EXR_UINT,
78 EXR_HALF,
79 EXR_FLOAT,
80 EXR_UNKNOWN,
81 };
82
83 enum ExrTileLevelMode {
84 EXR_TILE_LEVEL_ONE,
85 EXR_TILE_LEVEL_MIPMAP,
86 EXR_TILE_LEVEL_RIPMAP,
87 EXR_TILE_LEVEL_UNKNOWN,
88 };
89
90 enum ExrTileLevelRound {
91 EXR_TILE_ROUND_UP,
92 EXR_TILE_ROUND_DOWN,
93 EXR_TILE_ROUND_UNKNOWN,
94 };
95
96 typedef struct HuffEntry {
97 uint8_t len;
98 uint16_t sym;
99 uint32_t code;
100 } HuffEntry;
101
102 typedef struct EXRChannel {
103 int xsub, ysub;
104 enum ExrPixelType pixel_type;
105 } EXRChannel;
106
107 typedef struct EXRTileAttribute {
108 int32_t xSize;
109 int32_t ySize;
110 enum ExrTileLevelMode level_mode;
111 enum ExrTileLevelRound level_round;
112 } EXRTileAttribute;
113
114 typedef struct EXRThreadData {
115 uint8_t *uncompressed_data;
116 int uncompressed_size;
117
118 uint8_t *tmp;
119 int tmp_size;
120
121 uint8_t *bitmap;
122 uint16_t *lut;
123
124 uint8_t *ac_data;
125 unsigned ac_size;
126
127 uint8_t *dc_data;
128 unsigned dc_size;
129
130 uint8_t *rle_data;
131 unsigned rle_size;
132
133 uint8_t *rle_raw_data;
134 unsigned rle_raw_size;
135
136 float block[3][64];
137
138 int ysize, xsize;
139
140 int channel_line_size;
141
142 int run_sym;
143 HuffEntry *he;
144 uint64_t *freq;
145 VLC vlc;
146 } EXRThreadData;
147
148 typedef struct EXRContext {
149 AVClass *class;
150 AVFrame *picture;
151 AVCodecContext *avctx;
152 ExrDSPContext dsp;
153
154 #if HAVE_BIGENDIAN
155 BswapDSPContext bbdsp;
156 #endif
157
158 enum ExrCompr compression;
159 enum ExrPixelType pixel_type;
160 int channel_offsets[4]; // 0 = red, 1 = green, 2 = blue and 3 = alpha
161 const AVPixFmtDescriptor *desc;
162
163 int w, h;
164 uint32_t sar;
165 int32_t xmax, xmin;
166 int32_t ymax, ymin;
167 uint32_t xdelta, ydelta;
168
169 int scan_lines_per_block;
170
171 EXRTileAttribute tile_attr; /* header data attribute of tile */
172 int is_tile; /* 0 if scanline, 1 if tile */
173 int is_multipart;
174 int current_part;
175
176 int is_luma;/* 1 if there is an Y plane */
177
178 GetByteContext gb;
179 const uint8_t *buf;
180 int buf_size;
181
182 EXRChannel *channels;
183 int nb_channels;
184 int current_channel_offset;
185 uint32_t chunk_count;
186
187 EXRThreadData *thread_data;
188
189 const char *layer;
190 int selected_part;
191
192
193 uint8_t *offset_table;
194
195 #if FF_API_EXR_GAMMA
196 enum AVColorTransferCharacteristic apply_trc_type;
197 float gamma;
198 uint16_t gamma_table[65536];
199 Float2HalfTables f2h_tables;
200 #endif
201
202 Half2FloatTables h2f_tables;
203 } EXRContext;
204
205 12853 static int zip_uncompress(const EXRContext *s, const uint8_t *src, int compressed_size,
206 int uncompressed_size, EXRThreadData *td)
207 {
208 12853 unsigned long dest_len = uncompressed_size;
209
210
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 12853 if (uncompress(td->tmp, &dest_len, src, compressed_size) != Z_OK ||
211
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 12853 dest_len != uncompressed_size)
212 ✗ return AVERROR_INVALIDDATA;
213
214 av_assert1(uncompressed_size % 2 == 0);
215
216 12853 s->dsp.predictor(td->tmp, uncompressed_size);
217 12853 s->dsp.reorder_pixels(td->uncompressed_data, td->tmp, uncompressed_size);
218
219 12853 return 0;
220 }
221
222 4848 static int rle(uint8_t *dst, const uint8_t *src,
223 int compressed_size, int uncompressed_size)
224 {
225 4848 uint8_t *d = dst;
226 4848 const int8_t *s = src;
227 4848 int ssize = compressed_size;
228 4848 int dsize = uncompressed_size;
229 4848 uint8_t *dend = d + dsize;
230 int count;
231
232
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 676771 while (ssize > 0) {
233 671923 count = *s++;
234
235
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 671923 if (count < 0) {
236 501696 count = -count;
237
238
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239
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 501696 (ssize -= count + 1) < 0)
240 ✗ return AVERROR_INVALIDDATA;
241
242
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 21708325 while (count--)
243 21206629 *d++ = *s++;
244 } else {
245 170227 count++;
246
247
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248
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249 ✗ return AVERROR_INVALIDDATA;
250
251
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 4913430 while (count--)
252 4743203 *d++ = *s;
253
254 170227 s++;
255 }
256 }
257
258
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 4848 if (dend != d)
259 ✗ return AVERROR_INVALIDDATA;
260
261 4848 return 0;
262 }
263
264 4848 static int rle_uncompress(const EXRContext *ctx, const uint8_t *src, int compressed_size,
265 int uncompressed_size, EXRThreadData *td)
266 {
267 4848 rle(td->tmp, src, compressed_size, uncompressed_size);
268
269 av_assert1(uncompressed_size % 2 == 0);
270
271 4848 ctx->dsp.predictor(td->tmp, uncompressed_size);
272 4848 ctx->dsp.reorder_pixels(td->uncompressed_data, td->tmp, uncompressed_size);
273
274 4848 return 0;
275 }
276
277 #define USHORT_RANGE (1 << 16)
278 #define BITMAP_SIZE (1 << 13)
279
280 30 static uint16_t reverse_lut(const uint8_t *bitmap, uint16_t *lut)
281 {
282 30 int i, k = 0;
283
284
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285
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 1966080 if ((i == 0) || (bitmap[i >> 3] & (1 << (i & 7))))
286 15385 lut[k++] = i;
287
288 30 i = k - 1;
289
290 30 memset(lut + k, 0, (USHORT_RANGE - k) * 2);
291
292 30 return i;
293 }
294
295 30 static void apply_lut(const uint16_t *lut, uint16_t *dst, int dsize)
296 {
297 int i;
298
299
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 820752 for (i = 0; i < dsize; ++i)
300 820722 dst[i] = lut[dst[i]];
301 30 }
302
303 #define HUF_ENCBITS 16 // literal (value) bit length
304 #define HUF_ENCSIZE ((1 << HUF_ENCBITS) + 1) // encoding table size
305
306 30 static void huf_canonical_code_table(uint64_t *freq)
307 {
308 30 uint64_t c, n[59] = { 0 };
309 int i;
310
311
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 1966140 for (i = 0; i < HUF_ENCSIZE; i++)
312 1966110 n[freq[i]] += 1;
313
314 30 c = 0;
315
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 1770 for (i = 58; i > 0; --i) {
316 1740 uint64_t nc = ((c + n[i]) >> 1);
317 1740 n[i] = c;
318 1740 c = nc;
319 }
320
321
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 1966140 for (i = 0; i < HUF_ENCSIZE; ++i) {
322 1966110 int l = freq[i];
323
324
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 1966110 if (l > 0)
325 6417 freq[i] = l | (n[l]++ << 6);
326 }
327 30 }
328
329 #define SHORT_ZEROCODE_RUN 59
330 #define LONG_ZEROCODE_RUN 63
331 #define SHORTEST_LONG_RUN (2 + LONG_ZEROCODE_RUN - SHORT_ZEROCODE_RUN)
332 #define LONGEST_LONG_RUN (255 + SHORTEST_LONG_RUN)
333
334 30 static int huf_unpack_enc_table(GetByteContext *gb,
335 int32_t im, int32_t iM, uint64_t *freq)
336 {
337 GetBitContext gbit;
338 30 int ret = init_get_bits8(&gbit, gb->buffer, bytestream2_get_bytes_left(gb));
339
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 30 if (ret < 0)
340 ✗ return ret;
341
342
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 16636 for (; im <= iM; im++) {
343 int l;
344
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 16606 if (get_bits_left(&gbit) < 6)
345 ✗ return AVERROR_INVALIDDATA;
346 16606 l = freq[im] = get_bits(&gbit, 6);
347
348
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 16606 if (l == LONG_ZEROCODE_RUN) {
349 8339 int zerun = get_bits(&gbit, 8) + SHORTEST_LONG_RUN;
350
351
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 8339 if (im + zerun > iM + 1)
352 ✗ return AVERROR_INVALIDDATA;
353
354
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 1963965 while (zerun--)
355 1955626 freq[im++] = 0;
356
357 8339 im--;
358
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 8267 } else if (l >= SHORT_ZEROCODE_RUN) {
359 1053 int zerun = l - SHORT_ZEROCODE_RUN + 2;
360
361
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 1053 if (im + zerun > iM + 1)
362 ✗ return AVERROR_INVALIDDATA;
363
364
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 4323 while (zerun--)
365 3270 freq[im++] = 0;
366
367 1053 im--;
368 }
369 }
370
371 30 bytestream2_skip(gb, (get_bits_count(&gbit) + 7) / 8);
372 30 huf_canonical_code_table(freq);
373
374 30 return 0;
375 }
376
377 30 static int huf_build_dec_table(const EXRContext *s,
378 EXRThreadData *td, int im, int iM)
379 {
380 30 int j = 0;
381
382 30 td->run_sym = -1;
383
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 1966110 for (int i = im; i < iM; i++) {
384 1966080 td->he[j].sym = i;
385 1966080 td->he[j].len = td->freq[i] & 63;
386 1966080 td->he[j].code = td->freq[i] >> 6;
387
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 1966080 if (td->he[j].len > 32) {
388 ✗ avpriv_request_sample(s->avctx, "Too big code length");
389 ✗ return AVERROR_PATCHWELCOME;
390 }
391
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 1966080 if (td->he[j].len > 0)
392 6387 j++;
393 else
394 1959693 td->run_sym = i;
395 }
396
397
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 30 if (im > 0)
398 ✗ td->run_sym = 0;
399
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 30 else if (iM < 65535)
400 ✗ td->run_sym = 65535;
401
402
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 30 if (td->run_sym == -1) {
403 ✗ avpriv_request_sample(s->avctx, "No place for run symbol");
404 ✗ return AVERROR_PATCHWELCOME;
405 }
406
407 30 td->he[j].sym = td->run_sym;
408 30 td->he[j].len = td->freq[iM] & 63;
409
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 30 if (td->he[j].len > 32) {
410 ✗ avpriv_request_sample(s->avctx, "Too big code length");
411 ✗ return AVERROR_PATCHWELCOME;
412 }
413 30 td->he[j].code = td->freq[iM] >> 6;
414 30 j++;
415
416 30 ff_vlc_free(&td->vlc);
417 30 return ff_vlc_init_sparse(&td->vlc, 12, j,
418 30 &td->he[0].len, sizeof(td->he[0]), sizeof(td->he[0].len),
419 30 &td->he[0].code, sizeof(td->he[0]), sizeof(td->he[0].code),
420 30 &td->he[0].sym, sizeof(td->he[0]), sizeof(td->he[0].sym), 0);
421 }
422
423 30 static int huf_decode(VLC *vlc, GetByteContext *gb, int nbits, int run_sym,
424 int no, uint16_t *out)
425 {
426 GetBitContext gbit;
427 30 int oe = 0;
428
429 30 init_get_bits(&gbit, gb->buffer, nbits);
430
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 213511 while (get_bits_left(&gbit) > 0 && oe < no) {
431 213481 uint16_t x = get_vlc2(&gbit, vlc->table, 12, 3);
432
433
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 213481 if (x == run_sym) {
434 3387 int run = get_bits(&gbit, 8);
435 uint16_t fill;
436
437
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 3387 if (oe == 0 || oe + run > no)
438 ✗ return AVERROR_INVALIDDATA;
439
440 3387 fill = out[oe - 1];
441
442
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 614015 while (run-- > 0)
443 610628 out[oe++] = fill;
444 } else {
445 210094 out[oe++] = x;
446 }
447 }
448
449 30 return 0;
450 }
451
452 30 static int huf_uncompress(const EXRContext *s,
453 EXRThreadData *td,
454 GetByteContext *gb,
455 uint16_t *dst, int dst_size)
456 {
457 int32_t im, iM;
458 uint32_t nBits;
459 int ret;
460
461 30 im = bytestream2_get_le32(gb);
462 30 iM = bytestream2_get_le32(gb);
463 30 bytestream2_skip(gb, 4);
464 30 nBits = bytestream2_get_le32(gb);
465
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 30 if (im < 0 || im >= HUF_ENCSIZE ||
466
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 30 iM < 0 || iM >= HUF_ENCSIZE)
467 ✗ return AVERROR_INVALIDDATA;
468
469 30 bytestream2_skip(gb, 4);
470
471
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 30 if (!td->freq)
472 7 td->freq = av_malloc_array(HUF_ENCSIZE, sizeof(*td->freq));
473
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 30 if (!td->he)
474 7 td->he = av_calloc(HUF_ENCSIZE, sizeof(*td->he));
475
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 30 if (!td->freq || !td->he) {
476 ✗ ret = AVERROR(ENOMEM);
477 ✗ return ret;
478 }
479
480 30 memset(td->freq, 0, sizeof(*td->freq) * HUF_ENCSIZE);
481
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 30 if ((ret = huf_unpack_enc_table(gb, im, iM, td->freq)) < 0)
482 ✗ return ret;
483
484
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 30 if (nBits > 8 * bytestream2_get_bytes_left(gb)) {
485 ✗ ret = AVERROR_INVALIDDATA;
486 ✗ return ret;
487 }
488
489
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 30 if ((ret = huf_build_dec_table(s, td, im, iM)) < 0)
490 ✗ return ret;
491 30 return huf_decode(&td->vlc, gb, nBits, td->run_sym, dst_size, dst);
492 }
493
494 1091709 static inline void wdec14(uint16_t l, uint16_t h, uint16_t *a, uint16_t *b)
495 {
496 1091709 int16_t ls = l;
497 1091709 int16_t hs = h;
498 1091709 int hi = hs;
499 1091709 int ai = ls + (hi & 1) + (hi >> 1);
500 1091709 int16_t as = ai;
501 1091709 int16_t bs = ai - hi;
502
503 1091709 *a = as;
504 1091709 *b = bs;
505 1091709 }
506
507 #define NBITS 16
508 #define A_OFFSET (1 << (NBITS - 1))
509 #define MOD_MASK ((1 << NBITS) - 1)
510
511 ✗ static inline void wdec16(uint16_t l, uint16_t h, uint16_t *a, uint16_t *b)
512 {
513 ✗ int m = l;
514 ✗ int d = h;
515 ✗ int bb = (m - (d >> 1)) & MOD_MASK;
516 ✗ int aa = (d + bb - A_OFFSET) & MOD_MASK;
517 ✗ *b = bb;
518 ✗ *a = aa;
519 ✗ }
520
521 102 static void wav_decode(uint16_t *in, int nx, int ox,
522 int ny, int oy, uint16_t mx)
523 {
524 102 int w14 = (mx < (1 << 14));
525 102 int n = (nx > ny) ? ny : nx;
526 102 int p = 1;
527 int p2;
528
529
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 693 while (p <= n)
530 591 p <<= 1;
531
532 102 p >>= 1;
533 102 p2 = p;
534 102 p >>= 1;
535
536
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 591 while (p >= 1) {
537 489 uint16_t *py = in;
538 489 uint16_t *ey = in + oy * (ny - p2);
539 uint16_t i00, i01, i10, i11;
540 489 int oy1 = oy * p;
541 489 int oy2 = oy * p2;
542 489 int ox1 = ox * p;
543 489 int ox2 = ox * p2;
544
545
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 3429 for (; py <= ey; py += oy2) {
546 2940 uint16_t *px = py;
547 2940 uint16_t *ex = py + ox * (nx - p2);
548
549
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 275691 for (; px <= ex; px += ox2) {
550 272751 uint16_t *p01 = px + ox1;
551 272751 uint16_t *p10 = px + oy1;
552 272751 uint16_t *p11 = p10 + ox1;
553
554
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 272751 if (w14) {
555 272751 wdec14(*px, *p10, &i00, &i10);
556 272751 wdec14(*p01, *p11, &i01, &i11);
557 272751 wdec14(i00, i01, px, p01);
558 272751 wdec14(i10, i11, p10, p11);
559 } else {
560 ✗ wdec16(*px, *p10, &i00, &i10);
561 ✗ wdec16(*p01, *p11, &i01, &i11);
562 ✗ wdec16(i00, i01, px, p01);
563 ✗ wdec16(i10, i11, p10, p11);
564 }
565 }
566
567
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 2940 if (nx & p) {
568 324 uint16_t *p10 = px + oy1;
569
570
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 324 if (w14)
571 324 wdec14(*px, *p10, &i00, p10);
572 else
573 ✗ wdec16(*px, *p10, &i00, p10);
574
575 324 *px = i00;
576 }
577 }
578
579
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 489 if (ny & p) {
580 15 uint16_t *px = py;
581 15 uint16_t *ex = py + ox * (nx - p2);
582
583
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 396 for (; px <= ex; px += ox2) {
584 381 uint16_t *p01 = px + ox1;
585
586
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 381 if (w14)
587 381 wdec14(*px, *p01, &i00, p01);
588 else
589 ✗ wdec16(*px, *p01, &i00, p01);
590
591 381 *px = i00;
592 }
593 }
594
595 489 p2 = p;
596 489 p >>= 1;
597 }
598 102 }
599
600 30 static int piz_uncompress(const EXRContext *s, const uint8_t *src, int ssize,
601 int dsize, EXRThreadData *td)
602 {
603 GetByteContext gb;
604 uint16_t maxval, min_non_zero, max_non_zero;
605 uint16_t *ptr;
606 30 uint16_t *tmp = (uint16_t *)td->tmp;
607 uint16_t *out;
608 uint16_t *in;
609 int ret, i, j;
610 int pixel_half_size;/* 1 for half, 2 for float and uint32 */
611 EXRChannel *channel;
612 int tmp_offset;
613
614
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 30 if (!td->bitmap)
615 7 td->bitmap = av_malloc(BITMAP_SIZE);
616
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 30 if (!td->lut)
617 7 td->lut = av_malloc(1 << 17);
618
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 30 if (!td->bitmap || !td->lut) {
619 ✗ av_freep(&td->bitmap);
620 ✗ av_freep(&td->lut);
621 ✗ return AVERROR(ENOMEM);
622 }
623
624 30 bytestream2_init(&gb, src, ssize);
625 30 min_non_zero = bytestream2_get_le16(&gb);
626 30 max_non_zero = bytestream2_get_le16(&gb);
627
628
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 30 if (max_non_zero >= BITMAP_SIZE)
629 ✗ return AVERROR_INVALIDDATA;
630
631 30 memset(td->bitmap, 0, FFMIN(min_non_zero, BITMAP_SIZE));
632
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 30 if (min_non_zero <= max_non_zero)
633 30 bytestream2_get_buffer(&gb, td->bitmap + min_non_zero,
634 30 max_non_zero - min_non_zero + 1);
635 30 memset(td->bitmap + max_non_zero + 1, 0, BITMAP_SIZE - max_non_zero - 1);
636
637 30 maxval = reverse_lut(td->bitmap, td->lut);
638
639 30 bytestream2_skip(&gb, 4);
640 30 ret = huf_uncompress(s, td, &gb, tmp, dsize / sizeof(uint16_t));
641
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 30 if (ret)
642 ✗ return ret;
643
644 30 ptr = tmp;
645
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 120 for (i = 0; i < s->nb_channels; i++) {
646 90 channel = &s->channels[i];
647
648
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 90 if (channel->pixel_type == EXR_HALF)
649 78 pixel_half_size = 1;
650 else
651 12 pixel_half_size = 2;
652
653
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 192 for (j = 0; j < pixel_half_size; j++)
654 102 wav_decode(ptr + j, td->xsize, pixel_half_size, td->ysize,
655 102 td->xsize * pixel_half_size, maxval);
656 90 ptr += td->xsize * td->ysize * pixel_half_size;
657 }
658
659 30 apply_lut(td->lut, tmp, dsize / sizeof(uint16_t));
660
661 30 out = (uint16_t *)td->uncompressed_data;
662
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 921 for (i = 0; i < td->ysize; i++) {
663 891 tmp_offset = 0;
664
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 3564 for (j = 0; j < s->nb_channels; j++) {
665 2673 channel = &s->channels[j];
666
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 2673 if (channel->pixel_type == EXR_HALF)
667 2289 pixel_half_size = 1;
668 else
669 384 pixel_half_size = 2;
670
671 2673 in = tmp + tmp_offset * td->xsize * td->ysize + i * td->xsize * pixel_half_size;
672 2673 tmp_offset += pixel_half_size;
673
674 #if HAVE_BIGENDIAN
675 s->bbdsp.bswap16_buf(out, in, td->xsize * pixel_half_size);
676 #else
677 2673 memcpy(out, in, td->xsize * 2 * pixel_half_size);
678 #endif
679 2673 out += td->xsize * pixel_half_size;
680 }
681 }
682
683 30 return 0;
684 }
685
686 61 static int pxr24_uncompress(const EXRContext *s, const uint8_t *src,
687 int compressed_size, int uncompressed_size,
688 EXRThreadData *td)
689 {
690 61 unsigned long dest_len, expected_len = 0;
691 61 const uint8_t *in = td->tmp;
692 uint8_t *out;
693 int c, i, j;
694
695
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 279 for (i = 0; i < s->nb_channels; i++) {
696
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 218 if (s->channels[i].pixel_type == EXR_FLOAT) {
697 31 expected_len += (td->xsize * td->ysize * 3);/* PRX 24 store float in 24 bit instead of 32 */
698
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 187 } else if (s->channels[i].pixel_type == EXR_HALF) {
699 181 expected_len += (td->xsize * td->ysize * 2);
700 } else {//UINT 32
701 6 expected_len += (td->xsize * td->ysize * 4);
702 }
703 }
704
705 61 dest_len = expected_len;
706
707
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 61 if (uncompress(td->tmp, &dest_len, src, compressed_size) != Z_OK) {
708 ✗ return AVERROR_INVALIDDATA;
709
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 61 } else if (dest_len != expected_len) {
710 ✗ return AVERROR_INVALIDDATA;
711 }
712
713 61 out = td->uncompressed_data;
714
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 950 for (i = 0; i < td->ysize; i++)
715
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 3839 for (c = 0; c < s->nb_channels; c++) {
716 2950 EXRChannel *channel = &s->channels[c];
717 const uint8_t *ptr[4];
718 2950 uint32_t pixel = 0;
719
720
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 2950 switch (channel->pixel_type) {
721 248 case EXR_FLOAT:
722 248 ptr[0] = in;
723 248 ptr[1] = ptr[0] + td->xsize;
724 248 ptr[2] = ptr[1] + td->xsize;
725 248 in = ptr[2] + td->xsize;
726
727
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 3224 for (j = 0; j < td->xsize; ++j) {
728 2976 uint32_t diff = ((unsigned)*(ptr[0]++) << 24) |
729 2976 (*(ptr[1]++) << 16) |
730 2976 (*(ptr[2]++) << 8);
731 2976 pixel += diff;
732 2976 bytestream_put_le32(&out, pixel);
733 }
734 248 break;
735 2651 case EXR_HALF:
736 2651 ptr[0] = in;
737 2651 ptr[1] = ptr[0] + td->xsize;
738 2651 in = ptr[1] + td->xsize;
739
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 1925690 for (j = 0; j < td->xsize; j++) {
740 1923039 uint32_t diff = (*(ptr[0]++) << 8) | *(ptr[1]++);
741
742 1923039 pixel += diff;
743 1923039 bytestream_put_le16(&out, pixel);
744 }
745 2651 break;
746 51 case EXR_UINT:
747 51 ptr[0] = in;
748 51 ptr[1] = ptr[0] + s->xdelta;
749 51 ptr[2] = ptr[1] + s->xdelta;
750 51 ptr[3] = ptr[2] + s->xdelta;
751 51 in = ptr[3] + s->xdelta;
752
753
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 690 for (j = 0; j < s->xdelta; ++j) {
754 639 uint32_t diff = ((uint32_t)*(ptr[0]++) << 24) |
755 639 (*(ptr[1]++) << 16) |
756 639 (*(ptr[2]++) << 8 ) |
757 639 (*(ptr[3]++));
758 639 pixel += diff;
759 639 bytestream_put_le32(&out, pixel);
760 }
761 51 break;
762 ✗ default:
763 ✗ return AVERROR_INVALIDDATA;
764 }
765 }
766
767 61 return 0;
768 }
769
770 59279 static void unpack_14(const uint8_t b[14], uint16_t s[16])
771 {
772 59279 uint16_t shift = (b[ 2] >> 2) & 15;
773 59279 uint16_t bias = (0x20 << shift);
774 int i;
775
776 59279 s[ 0] = (b[0] << 8) | b[1];
777
778 59279 s[ 4] = s[ 0] + ((((b[ 2] << 4) | (b[ 3] >> 4)) & 0x3f) << shift) - bias;
779 59279 s[ 8] = s[ 4] + ((((b[ 3] << 2) | (b[ 4] >> 6)) & 0x3f) << shift) - bias;
780 59279 s[12] = s[ 8] + ((b[ 4] & 0x3f) << shift) - bias;
781
782 59279 s[ 1] = s[ 0] + ((b[ 5] >> 2) << shift) - bias;
783 59279 s[ 5] = s[ 4] + ((((b[ 5] << 4) | (b[ 6] >> 4)) & 0x3f) << shift) - bias;
784 59279 s[ 9] = s[ 8] + ((((b[ 6] << 2) | (b[ 7] >> 6)) & 0x3f) << shift) - bias;
785 59279 s[13] = s[12] + ((b[ 7] & 0x3f) << shift) - bias;
786
787 59279 s[ 2] = s[ 1] + ((b[ 8] >> 2) << shift) - bias;
788 59279 s[ 6] = s[ 5] + ((((b[ 8] << 4) | (b[ 9] >> 4)) & 0x3f) << shift) - bias;
789 59279 s[10] = s[ 9] + ((((b[ 9] << 2) | (b[10] >> 6)) & 0x3f) << shift) - bias;
790 59279 s[14] = s[13] + ((b[10] & 0x3f) << shift) - bias;
791
792 59279 s[ 3] = s[ 2] + ((b[11] >> 2) << shift) - bias;
793 59279 s[ 7] = s[ 6] + ((((b[11] << 4) | (b[12] >> 4)) & 0x3f) << shift) - bias;
794 59279 s[11] = s[10] + ((((b[12] << 2) | (b[13] >> 6)) & 0x3f) << shift) - bias;
795 59279 s[15] = s[14] + ((b[13] & 0x3f) << shift) - bias;
796
797
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 1007743 for (i = 0; i < 16; ++i) {
798
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 948464 if (s[i] & 0x8000)
799 942347 s[i] &= 0x7fff;
800 else
801 6117 s[i] = ~s[i];
802 }
803 59279 }
804
805 106 static void unpack_3(const uint8_t b[3], uint16_t s[16])
806 {
807 int i;
808
809 106 s[0] = (b[0] << 8) | b[1];
810
811
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 106 if (s[0] & 0x8000)
812 105 s[0] &= 0x7fff;
813 else
814 1 s[0] = ~s[0];
815
816
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 1696 for (i = 1; i < 16; i++)
817 1590 s[i] = s[0];
818 106 }
819
820
821 23 static int b44_uncompress(const EXRContext *s, const uint8_t *src, int compressed_size,
822 int uncompressed_size, EXRThreadData *td) {
823 23 const int8_t *sr = src;
824 23 int stay_to_uncompress = compressed_size;
825 int nb_b44_block_w, nb_b44_block_h;
826 int index_tl_x, index_tl_y, index_out, index_tmp;
827 uint16_t tmp_buffer[16]; /* B44 use 4x4 half float pixel */
828 int c, iY, iX, y, x;
829 23 int target_channel_offset = 0;
830
831 /* calc B44 block count */
832 23 nb_b44_block_w = td->xsize / 4;
833
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 23 if ((td->xsize % 4) != 0)
834 13 nb_b44_block_w++;
835
836 23 nb_b44_block_h = td->ysize / 4;
837
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 23 if ((td->ysize % 4) != 0)
838 6 nb_b44_block_h++;
839
840
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 156 for (c = 0; c < s->nb_channels; c++) {
841
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 133 if (s->channels[c].pixel_type == EXR_HALF) {/* B44 only compress half float data */
842
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 459 for (iY = 0; iY < nb_b44_block_h; iY++) {
843
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 59759 for (iX = 0; iX < nb_b44_block_w; iX++) {/* For each B44 block */
844
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 59385 if (stay_to_uncompress < 3)
845 ✗ return AVERROR_INVALIDDATA;
846
847
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 59385 if (src[compressed_size - stay_to_uncompress + 2] == 0xfc) { /* B44A block */
848 106 unpack_3(sr, tmp_buffer);
849 106 sr += 3;
850 106 stay_to_uncompress -= 3;
851 } else {/* B44 Block */
852
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 59279 if (stay_to_uncompress < 14)
853 ✗ return AVERROR_INVALIDDATA;
854 59279 unpack_14(sr, tmp_buffer);
855 59279 sr += 14;
856 59279 stay_to_uncompress -= 14;
857 }
858
859 /* copy data to uncompress buffer (B44 block can exceed target resolution)*/
860 59385 index_tl_x = iX * 4;
861 59385 index_tl_y = iY * 4;
862
863
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 295761 for (y = index_tl_y; y < FFMIN(index_tl_y + 4, td->ysize); y++) {
864
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 1180363 for (x = index_tl_x; x < FFMIN(index_tl_x + 4, td->xsize); x++) {
865 943987 index_out = target_channel_offset * td->xsize + y * td->channel_line_size + 2 * x;
866 943987 index_tmp = (y-index_tl_y) * 4 + (x-index_tl_x);
867 943987 td->uncompressed_data[index_out] = tmp_buffer[index_tmp] & 0xff;
868 943987 td->uncompressed_data[index_out + 1] = tmp_buffer[index_tmp] >> 8;
869 }
870 }
871 }
872 }
873 85 target_channel_offset += 2;
874 } else {/* Float or UINT 32 channel */
875
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 48 if (stay_to_uncompress < td->ysize * td->xsize * 4)
876 ✗ return AVERROR_INVALIDDATA;
877
878
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 448 for (y = 0; y < td->ysize; y++) {
879 400 index_out = target_channel_offset * td->xsize + y * td->channel_line_size;
880 400 memcpy(&td->uncompressed_data[index_out], sr, td->xsize * 4);
881 400 sr += td->xsize * 4;
882 }
883 48 target_channel_offset += 4;
884
885 48 stay_to_uncompress -= td->ysize * td->xsize * 4;
886 }
887 }
888
889 23 return 0;
890 }
891
892 ✗ static int ac_uncompress(const EXRContext *s, GetByteContext *gb, float *block)
893 {
894 ✗ int ret = 0, n = 1;
895
896 ✗ while (n < 64) {
897 ✗ uint16_t val = bytestream2_get_ne16(gb);
898
899 ✗ if (val == 0xff00) {
900 ✗ n = 64;
901 ✗ } else if ((val >> 8) == 0xff) {
902 ✗ n += val & 0xff;
903 } else {
904 ✗ ret = n;
905 ✗ block[ff_zigzag_direct[n]] = av_int2float(half2float(val, &s->h2f_tables));
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(const 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->h2f_tables);
1124
1125 ✗ block[0] = dc_val.f;
1126 ✗ ac_uncompress(s, &agb, block);
1127 ✗ dct_inverse(block);
1128 }
1129
1130 {
1131 ✗ const int o = s->nb_channels == 4;
1132 ✗ float *bo = ((float *)td->uncompressed_data) +
1133 ✗ y * td->xsize * s->nb_channels + td->xsize * (o + 0) + x;
1134 ✗ float *go = ((float *)td->uncompressed_data) +
1135 ✗ y * td->xsize * s->nb_channels + td->xsize * (o + 1) + x;
1136 ✗ float *ro = ((float *)td->uncompressed_data) +
1137 ✗ y * td->xsize * s->nb_channels + td->xsize * (o + 2) + x;
1138 ✗ float *yb = td->block[0];
1139 ✗ float *ub = td->block[1];
1140 ✗ float *vb = td->block[2];
1141
1142 ✗ for (int yy = 0; yy < 8; yy++) {
1143 ✗ for (int xx = 0; xx < 8; xx++) {
1144 ✗ const int idx = xx + yy * 8;
1145
1146 ✗ convert(yb[idx], ub[idx], vb[idx], &bo[xx], &go[xx], &ro[xx]);
1147
1148 ✗ bo[xx] = to_linear(bo[xx], 1.f);
1149 ✗ go[xx] = to_linear(go[xx], 1.f);
1150 ✗ ro[xx] = to_linear(ro[xx], 1.f);
1151 }
1152
1153 ✗ bo += td->xsize * s->nb_channels;
1154 ✗ go += td->xsize * s->nb_channels;
1155 ✗ ro += td->xsize * s->nb_channels;
1156 }
1157 }
1158 }
1159 }
1160
1161 ✗ if (s->nb_channels < 4)
1162 ✗ return 0;
1163
1164 ✗ for (int y = 0; y < td->ysize && td->rle_raw_data; y++) {
1165 ✗ uint32_t *ao = ((uint32_t *)td->uncompressed_data) + y * td->xsize * s->nb_channels;
1166 ✗ uint8_t *ai0 = td->rle_raw_data + y * td->xsize;
1167 ✗ uint8_t *ai1 = td->rle_raw_data + y * td->xsize + rle_raw_size / 2;
1168
1169 ✗ for (int x = 0; x < td->xsize; x++) {
1170 ✗ uint16_t ha = ai0[x] | (ai1[x] << 8);
1171
1172 ✗ ao[x] = half2float(ha, &s->h2f_tables);
1173 }
1174 }
1175
1176 ✗ return 0;
1177 }
1178
1179 37267 static int decode_block(AVCodecContext *avctx, void *tdata,
1180 int jobnr, int threadnr)
1181 {
1182 37267 const EXRContext *s = avctx->priv_data;
1183 37267 AVFrame *const p = s->picture;
1184 37267 EXRThreadData *td = &s->thread_data[threadnr];
1185 37267 const uint8_t *channel_buffer[4] = { 0 };
1186 37267 const uint8_t *buf = s->buf;
1187 uint64_t line_offset, uncompressed_size;
1188 uint8_t *ptr;
1189 uint32_t data_size;
1190 37267 int line, col = 0;
1191 uint64_t tile_x, tile_y, tile_level_x, tile_level_y;
1192 const uint8_t *src;
1193 37267 int step = s->desc->comp[0].step;
1194 37267 int bxmin = 0, axmax = 0, window_xoffset = 0;
1195 int window_xmin, window_xmax, window_ymin, window_ymax;
1196 int data_xoffset, data_yoffset, data_window_offset, xsize, ysize;
1197 37267 int i, x, buf_size = s->buf_size;
1198 int c, rgb_channel_count;
1199 #if FF_API_EXR_GAMMA
1200 37267 float one_gamma = 1.0f / s->gamma;
1201 37267 av_csp_trc_function trc_func = av_csp_trc_func_from_id(s->apply_trc_type);
1202 #endif
1203 int ret;
1204
1205 37267 line_offset = AV_RL64(s->gb.buffer + jobnr * 8);
1206
1207
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 37267 if (s->is_tile) {
1208
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 104 if (buf_size < 20 || line_offset > buf_size - 20)
1209 ✗ return AVERROR_INVALIDDATA;
1210
1211 104 src = buf + line_offset + 20;
1212
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 104 if (s->is_multipart)
1213 ✗ src += 4;
1214
1215 104 tile_x = AV_RL32(src - 20);
1216 104 tile_y = AV_RL32(src - 16);
1217 104 tile_level_x = AV_RL32(src - 12);
1218 104 tile_level_y = AV_RL32(src - 8);
1219
1220 104 data_size = AV_RL32(src - 4);
1221
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 104 if (data_size <= 0 || data_size > buf_size - line_offset - 20)
1222 ✗ return AVERROR_INVALIDDATA;
1223
1224
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 104 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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 104 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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 104 if (tile_y && s->tile_attr.ySize + (int64_t)FFMAX(s->ymin, 0) >= INT_MAX / tile_y )
1232 ✗ return AVERROR_INVALIDDATA;
1233
1234 104 line = s->ymin + s->tile_attr.ySize * tile_y;
1235 104 col = s->tile_attr.xSize * tile_x;
1236
1237
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 104 if (line < s->ymin || line > s->ymax ||
1238
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 104 s->xmin + col < s->xmin || s->xmin + col > s->xmax)
1239 ✗ return AVERROR_INVALIDDATA;
1240
1241 104 td->ysize = FFMIN(s->tile_attr.ySize, s->ydelta - tile_y * s->tile_attr.ySize);
1242 104 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 104 av_image_check_size2(td->xsize, td->ysize, s->avctx->max_pixels, AV_PIX_FMT_NONE, 0, s->avctx) < 0)
1246 ✗ return AVERROR_INVALIDDATA;
1247
1248 104 td->channel_line_size = td->xsize * s->current_channel_offset;/* uncompress size of one line */
1249 104 uncompressed_size = td->channel_line_size * (uint64_t)td->ysize;/* uncompress size of the block */
1250 } else {
1251
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 37163 if (buf_size < 8 || line_offset > buf_size - 8)
1252 ✗ return AVERROR_INVALIDDATA;
1253
1254 37163 src = buf + line_offset + 8;
1255
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 37163 if (s->is_multipart)
1256 ✗ src += 4;
1257 37163 line = AV_RL32(src - 8);
1258
1259
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 37163 if (line < s->ymin || line > s->ymax)
1260 ✗ return AVERROR_INVALIDDATA;
1261
1262 37163 data_size = AV_RL32(src - 4);
1263
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 37163 if (data_size <= 0 || data_size > buf_size - line_offset - 8)
1264 ✗ return AVERROR_INVALIDDATA;
1265
1266 37163 td->ysize = FFMIN(s->scan_lines_per_block, s->ymax - line + 1); /* s->ydelta - line ?? */
1267 37163 td->xsize = s->xdelta;
1268
1269
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 74326 if (td->xsize * (uint64_t)s->current_channel_offset > INT_MAX ||
1270 37163 av_image_check_size2(td->xsize, td->ysize, s->avctx->max_pixels, AV_PIX_FMT_NONE, 0, s->avctx) < 0)
1271 ✗ return AVERROR_INVALIDDATA;
1272
1273 37163 td->channel_line_size = td->xsize * s->current_channel_offset;/* uncompress size of one line */
1274 37163 uncompressed_size = td->channel_line_size * (uint64_t)td->ysize;/* uncompress size of the block */
1275
1276
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 37163 if ((s->compression == EXR_RAW && (data_size != uncompressed_size ||
1277
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 11927 line_offset > buf_size - uncompressed_size)) ||
1278
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 37163 (s->compression != EXR_RAW && (data_size > uncompressed_size ||
1279
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 25236 line_offset > buf_size - data_size))) {
1280 ✗ return AVERROR_INVALIDDATA;
1281 }
1282 }
1283
1284 37267 window_xmin = FFMIN(avctx->width, FFMAX(0, s->xmin + col));
1285 37267 window_xmax = FFMIN(avctx->width, FFMAX(0, s->xmin + col + td->xsize));
1286 37267 window_ymin = FFMIN(avctx->height, FFMAX(0, line ));
1287 37267 window_ymax = FFMIN(avctx->height, FFMAX(0, line + td->ysize));
1288 37267 xsize = window_xmax - window_xmin;
1289 37267 ysize = window_ymax - window_ymin;
1290
1291 /* tile or scanline not visible skip decoding */
1292
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 37267 if (xsize <= 0 || ysize <= 0)
1293 433 return 0;
1294
1295 /* is the first tile or is a scanline */
1296
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 36834 if(col == 0) {
1297 36794 window_xmin = 0;
1298 /* pixels to add at the left of the display window */
1299 36794 window_xoffset = FFMAX(0, s->xmin);
1300 /* bytes to add at the left of the display window */
1301 36794 bxmin = window_xoffset * step;
1302 }
1303
1304 /* is the last tile or is a scanline */
1305
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 36834 if(col + td->xsize == s->xdelta) {
1306 36794 window_xmax = avctx->width;
1307 /* bytes to add at the right of the display window */
1308 36794 axmax = FFMAX(0, (avctx->width - (s->xmax + 1))) * step;
1309 }
1310
1311
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 36834 if (avctx->max_pixels && uncompressed_size > avctx->max_pixels * 16LL)
1312 ✗ return AVERROR_INVALIDDATA;
1313
1314
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 36834 if (data_size < uncompressed_size || s->is_tile) { /* td->tmp is use for tile reorganization */
1315 17828 av_fast_padded_malloc(&td->tmp, &td->tmp_size, uncompressed_size);
1316
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 17828 if (!td->tmp)
1317 ✗ return AVERROR(ENOMEM);
1318 }
1319
1320
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 36834 if (data_size < uncompressed_size) {
1321 17815 av_fast_padded_malloc(&td->uncompressed_data,
1322 17815 &td->uncompressed_size, uncompressed_size + 64);/* Force 64 padding for AVX2 reorder_pixels dst */
1323
1324
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 17815 if (!td->uncompressed_data)
1325 ✗ return AVERROR(ENOMEM);
1326
1327 17815 ret = AVERROR_INVALIDDATA;
1328
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 17815 switch (s->compression) {
1329 12853 case EXR_ZIP1:
1330 case EXR_ZIP16:
1331 12853 ret = zip_uncompress(s, src, data_size, uncompressed_size, td);
1332 12853 break;
1333 30 case EXR_PIZ:
1334 30 ret = piz_uncompress(s, src, data_size, uncompressed_size, td);
1335 30 break;
1336 61 case EXR_PXR24:
1337 61 ret = pxr24_uncompress(s, src, data_size, uncompressed_size, td);
1338 61 break;
1339 4848 case EXR_RLE:
1340 4848 ret = rle_uncompress(s, src, data_size, uncompressed_size, td);
1341 4848 break;
1342 23 case EXR_B44:
1343 case EXR_B44A:
1344 23 ret = b44_uncompress(s, src, data_size, uncompressed_size, td);
1345 23 break;
1346 ✗ case EXR_DWAA:
1347 case EXR_DWAB:
1348 ✗ ret = dwa_uncompress(s, src, data_size, uncompressed_size, td);
1349 ✗ break;
1350 }
1351
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 17815 if (ret < 0) {
1352 ✗ av_log(avctx, AV_LOG_ERROR, "decode_block() failed.\n");
1353 ✗ return ret;
1354 }
1355 17815 src = td->uncompressed_data;
1356 }
1357
1358 /* offsets to crop data outside display window */
1359
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 36834 data_xoffset = FFABS(FFMIN(0, s->xmin + col)) * (s->pixel_type == EXR_HALF ? 2 : 4);
1360
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 36834 data_yoffset = FFABS(FFMIN(0, line));
1361 36834 data_window_offset = (data_yoffset * td->channel_line_size) + data_xoffset;
1362
1363
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 36834 if (s->channel_offsets[3] >= 0)
1364 13595 channel_buffer[3] = src + (td->xsize * s->channel_offsets[3]) + data_window_offset;
1365
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 36834 if (!s->is_luma) {
1366 25358 channel_buffer[0] = src + (td->xsize * s->channel_offsets[0]) + data_window_offset;
1367 25358 channel_buffer[1] = src + (td->xsize * s->channel_offsets[1]) + data_window_offset;
1368 25358 channel_buffer[2] = src + (td->xsize * s->channel_offsets[2]) + data_window_offset;
1369 25358 rgb_channel_count = 3;
1370 } else { /* put y data in the first channel_buffer and if needed, alpha in the second */
1371 11476 channel_buffer[0] = src + (td->xsize * s->channel_offsets[1]) + data_window_offset;
1372
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 11476 if (!(s->desc->flags & AV_PIX_FMT_FLAG_PLANAR))
1373 11476 channel_buffer[1] = channel_buffer[3];
1374 11476 rgb_channel_count = 1;
1375 }
1376
1377
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 36834 if (s->desc->flags & AV_PIX_FMT_FLAG_FLOAT) {
1378
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 137939 for (c = 0; c < s->desc->nb_components; c++) {
1379 101115 int plane = s->desc->comp[c].plane;
1380 101115 ptr = p->data[plane] + window_ymin * p->linesize[plane] + (window_xmin * step) + s->desc->comp[c].offset;
1381
1382
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 247623 for (i = 0; i < ysize; i++, ptr += p->linesize[plane]) {
1383 146508 const uint8_t *src = channel_buffer[c];
1384 146508 uint8_t *ptr_x = ptr + window_xoffset * step;
1385
1386 // Zero out the start if xmin is not 0
1387
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 146508 if (s->desc->flags & AV_PIX_FMT_FLAG_PLANAR || !c)
1388 146500 memset(ptr, 0, bxmin);
1389
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 146508 if (s->pixel_type == EXR_FLOAT ||
1391
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 24632 s->compression == EXR_DWAA ||
1392
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 24632 s->compression == EXR_DWAB) {
1393 // 32-bit
1394 #if FF_API_EXR_GAMMA
1395
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 121876 if (trc_func && (!c || (c < 3 && s->desc->flags & AV_PIX_FMT_FLAG_PLANAR))) {
1396 ✗ for (int x = 0; x < xsize; x++, ptr_x += step) {
1397 ✗ float f = av_int2float(bytestream_get_le32(&src));
1398 ✗ AV_WN32A(ptr_x, av_float2int(trc_func(f)));
1399 }
1400
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 121876 } else if (one_gamma != 1.f) {
1401 ✗ for (int x = 0; x < xsize; x++, ptr_x += step) {
1402 ✗ float f = av_int2float(bytestream_get_le32(&src));
1403 ✗ if (f > 0.0f && c < 3) /* avoid negative values */
1404 ✗ f = powf(f, one_gamma);
1405 ✗ AV_WN32A(ptr_x, av_float2int(f));
1406 }
1407 } else
1408 #endif
1409
2/2
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 42372700 for (int x = 0; x < xsize; x++, ptr_x += step)
1410 42250824 AV_WN32A(ptr_x, bytestream_get_le32(&src));
1411
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 24632 } else if (s->pixel_type == EXR_HALF) {
1412 // 16-bit
1413 #if FF_API_EXR_GAMMA
1414
2/10
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 24632 if (one_gamma != 1.f || (trc_func && (!c || (c < 3 && s->desc->flags & AV_PIX_FMT_FLAG_PLANAR)))) {
1415 ✗ for (int x = 0; x < xsize; x++, ptr_x += step)
1416 ✗ AV_WN16A(ptr_x, s->gamma_table[bytestream_get_le16(&src)]);
1417 } else
1418 #endif
1419
2/2
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 10538537 for (int x = 0; x < xsize; x++, ptr_x += step)
1420 10513905 AV_WN16A(ptr_x, bytestream_get_le16(&src));
1421 }
1422
1423 // Zero out the end if xmax+1 is not w
1424 146508 memset(ptr_x, 0, axmax);
1425 146508 channel_buffer[c] += td->channel_line_size;
1426 }
1427 }
1428 } else {
1429
1430 av_assert1(s->pixel_type == EXR_UINT);
1431 10 ptr = p->data[0] + window_ymin * p->linesize[0] + (window_xmin * s->desc->nb_components * 2);
1432
1433
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 185 for (i = 0; i < ysize; i++, ptr += p->linesize[0]) {
1434
1435 const uint8_t * a;
1436 const uint8_t *rgb[3];
1437 uint16_t *ptr_x;
1438
1439
2/2
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 700 for (c = 0; c < rgb_channel_count; c++) {
1440 525 rgb[c] = channel_buffer[c];
1441 }
1442
1443
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 175 if (channel_buffer[3])
1444 ✗ a = channel_buffer[3];
1445
1446 175 ptr_x = (uint16_t *) ptr;
1447
1448 // Zero out the start if xmin is not 0
1449 175 memset(ptr_x, 0, bxmin);
1450 175 ptr_x += window_xoffset * s->desc->nb_components;
1451
1452
2/2
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 5484 for (x = 0; x < xsize; x++) {
1453
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 21236 for (c = 0; c < rgb_channel_count; c++) {
1454 15927 *ptr_x++ = bytestream_get_le32(&rgb[c]) >> 16;
1455 }
1456
1457
1/2
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 5309 if (channel_buffer[3])
1458 ✗ *ptr_x++ = bytestream_get_le32(&a) >> 16;
1459 }
1460
1461 // Zero out the end if xmax+1 is not w
1462 175 memset(ptr_x, 0, axmax);
1463
1464 175 channel_buffer[0] += td->channel_line_size;
1465 175 channel_buffer[1] += td->channel_line_size;
1466 175 channel_buffer[2] += td->channel_line_size;
1467
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 175 if (channel_buffer[3])
1468 ✗ channel_buffer[3] += td->channel_line_size;
1469 }
1470 }
1471
1472 36834 return 0;
1473 }
1474
1475 ✗ static void skip_header_chunk(EXRContext *s)
1476 {
1477 ✗ GetByteContext *gb = &s->gb;
1478
1479 ✗ while (bytestream2_get_bytes_left(gb) > 0) {
1480 ✗ if (!bytestream2_peek_byte(gb))
1481 ✗ break;
1482
1483 // Process unknown variables
1484 ✗ for (int i = 0; i < 2; i++) // value_name and value_type
1485 ✗ while (bytestream2_get_byte(gb) != 0);
1486
1487 // Skip variable length
1488 ✗ bytestream2_skip(gb, bytestream2_get_le32(gb));
1489 }
1490 ✗ }
1491
1492 /**
1493 * Check if the variable name corresponds to its data type.
1494 *
1495 * @param s the EXRContext
1496 * @param value_name name of the variable to check
1497 * @param value_type type of the variable to check
1498 * @param minimum_length minimum length of the variable data
1499 *
1500 * @return bytes to read containing variable data
1501 * -1 if variable is not found
1502 * 0 if buffer ended prematurely
1503 */
1504 32478 static int check_header_variable(EXRContext *s,
1505 const char *value_name,
1506 const char *value_type,
1507 unsigned int minimum_length)
1508 {
1509 32478 GetByteContext *gb = &s->gb;
1510 32478 int var_size = -1;
1511
1512
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✗ Branch 2 not taken.
 32478 if (bytestream2_get_bytes_left(gb) >= minimum_length &&
1513
2/2
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✓ Branch 1 taken 30312 times.
 32478 !strcmp(gb->buffer, value_name)) {
1514 // found value_name, jump to value_type (null terminated strings)
1515 2166 gb->buffer += strlen(value_name) + 1;
1516
1/2
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 2166 if (!strcmp(gb->buffer, value_type)) {
1517 2166 gb->buffer += strlen(value_type) + 1;
1518 2166 var_size = bytestream2_get_le32(gb);
1519 // don't go read past boundaries
1520
1/2
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✓ Branch 2 taken 2166 times.
 2166 if (var_size > bytestream2_get_bytes_left(gb))
1521 ✗ var_size = 0;
1522 } else {
1523 // value_type not found, reset the buffer
1524 ✗ gb->buffer -= strlen(value_name) + 1;
1525 ✗ av_log(s->avctx, AV_LOG_WARNING,
1526 "Unknown data type %s for header variable %s.\n",
1527 value_type, value_name);
1528 }
1529 }
1530
1531 32478 return var_size;
1532 }
1533
1534 316 static int decode_header(EXRContext *s, AVFrame *frame)
1535 {
1536 316 AVDictionary *metadata = NULL;
1537 316 GetByteContext *gb = &s->gb;
1538 int magic_number, version, flags;
1539 316 int layer_match = 0;
1540 int ret;
1541 316 int dup_channels = 0;
1542
1543 316 s->current_channel_offset = 0;
1544 316 s->xmin = ~0;
1545 316 s->xmax = ~0;
1546 316 s->ymin = ~0;
1547 316 s->ymax = ~0;
1548 316 s->xdelta = ~0;
1549 316 s->ydelta = ~0;
1550 316 s->channel_offsets[0] = -1;
1551 316 s->channel_offsets[1] = -1;
1552 316 s->channel_offsets[2] = -1;
1553 316 s->channel_offsets[3] = -1;
1554 316 s->pixel_type = EXR_UNKNOWN;
1555 316 s->compression = EXR_UNKN;
1556 316 s->nb_channels = 0;
1557 316 s->w = 0;
1558 316 s->h = 0;
1559 316 s->tile_attr.xSize = -1;
1560 316 s->tile_attr.ySize = -1;
1561 316 s->is_tile = 0;
1562 316 s->is_multipart = 0;
1563 316 s->is_luma = 0;
1564 316 s->current_part = 0;
1565
1566
1/2
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 316 if (bytestream2_get_bytes_left(gb) < 10) {
1567 ✗ av_log(s->avctx, AV_LOG_ERROR, "Header too short to parse.\n");
1568 ✗ return AVERROR_INVALIDDATA;
1569 }
1570
1571 316 magic_number = bytestream2_get_le32(gb);
1572
1/2
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 316 if (magic_number != 20000630) {
1573 /* As per documentation of OpenEXR, it is supposed to be
1574 * int 20000630 little-endian */
1575 ✗ av_log(s->avctx, AV_LOG_ERROR, "Wrong magic number %d.\n", magic_number);
1576 ✗ return AVERROR_INVALIDDATA;
1577 }
1578
1579 316 version = bytestream2_get_byte(gb);
1580
1/2
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 316 if (version != 2) {
1581 ✗ avpriv_report_missing_feature(s->avctx, "Version %d", version);
1582 ✗ return AVERROR_PATCHWELCOME;
1583 }
1584
1585 316 flags = bytestream2_get_le24(gb);
1586
1587
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 316 if (flags & 0x02)
1588 44 s->is_tile = 1;
1589
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 316 if (flags & 0x10)
1590 ✗ s->is_multipart = 1;
1591
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 316 if (flags & 0x08) {
1592 ✗ avpriv_report_missing_feature(s->avctx, "deep data");
1593 ✗ return AVERROR_PATCHWELCOME;
1594 }
1595
1596 // Parse the header
1597
1/2
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 4396 while (bytestream2_get_bytes_left(gb) > 0) {
1598 int var_size;
1599
1600
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 4396 while (s->is_multipart && s->current_part < s->selected_part &&
1601 ✗ bytestream2_get_bytes_left(gb) > 0) {
1602 ✗ if (bytestream2_peek_byte(gb)) {
1603 ✗ skip_header_chunk(s);
1604 } else {
1605 ✗ bytestream2_skip(gb, 1);
1606 ✗ if (!bytestream2_peek_byte(gb))
1607 ✗ break;
1608 }
1609 ✗ bytestream2_skip(gb, 1);
1610 ✗ s->current_part++;
1611 }
1612
1613
2/2
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✓ Branch 2 taken 4080 times.
 4396 if (!bytestream2_peek_byte(gb)) {
1614
1/2
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✗ Branch 1 not taken.
 316 if (!s->is_multipart)
1615 316 break;
1616 ✗ bytestream2_skip(gb, 1);
1617 ✗ if (s->current_part == s->selected_part) {
1618 ✗ while (bytestream2_get_bytes_left(gb) > 0) {
1619 ✗ if (bytestream2_peek_byte(gb)) {
1620 ✗ skip_header_chunk(s);
1621 } else {
1622 ✗ bytestream2_skip(gb, 1);
1623 ✗ if (!bytestream2_peek_byte(gb))
1624 ✗ break;
1625 }
1626 }
1627 }
1628 ✗ if (!bytestream2_peek_byte(gb))
1629 ✗ break;
1630 ✗ s->current_part++;
1631 }
1632
1633
2/2
✓ Branch 1 taken 316 times.
✓ Branch 2 taken 3764 times.
 4080 if ((var_size = check_header_variable(s, "channels",
1634 316 "chlist", 38)) >= 0) {
1635 GetByteContext ch_gb;
1636
1/2
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 316 if (!var_size) {
1637 ✗ ret = AVERROR_INVALIDDATA;
1638 ✗ goto fail;
1639 }
1640
1641 316 bytestream2_init(&ch_gb, gb->buffer, var_size);
1642
1643
2/2
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✓ Branch 2 taken 316 times.
 1528 while (bytestream2_get_bytes_left(&ch_gb) >= 19) {
1644 EXRChannel *channel;
1645 enum ExrPixelType current_pixel_type;
1646 1212 int channel_index = -1;
1647 int xsub, ysub;
1648
1649
2/2
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✓ Branch 1 taken 940 times.
 1212 if (strcmp(s->layer, "") != 0) {
1650
2/2
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✓ Branch 1 taken 122 times.
 272 if (strncmp(ch_gb.buffer, s->layer, strlen(s->layer)) == 0) {
1651 150 layer_match = 1;
1652 150 av_log(s->avctx, AV_LOG_INFO,
1653 "Channel match layer : %s.\n", ch_gb.buffer);
1654 150 ch_gb.buffer += strlen(s->layer);
1655
1/2
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✗ Branch 1 not taken.
 150 if (*ch_gb.buffer == '.')
1656 150 ch_gb.buffer++; /* skip dot if not given */
1657 } else {
1658 122 layer_match = 0;
1659 122 av_log(s->avctx, AV_LOG_INFO,
1660 "Channel doesn't match layer : %s.\n", ch_gb.buffer);
1661 }
1662 } else {
1663 940 layer_match = 1;
1664 }
1665
1666
2/2
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✓ Branch 1 taken 122 times.
 1212 if (layer_match) { /* only search channel if the layer match is valid */
1667
3/4
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✗ Branch 4 not taken.
 1926 if (!av_strcasecmp(ch_gb.buffer, "R") ||
1668
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 1672 !av_strcasecmp(ch_gb.buffer, "X") ||
1669 836 !av_strcasecmp(ch_gb.buffer, "U")) {
1670 254 channel_index = 0;
1671 254 s->is_luma = 0;
1672
3/4
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✗ Branch 3 not taken.
✓ Branch 4 taken 582 times.
 1418 } else if (!av_strcasecmp(ch_gb.buffer, "G") ||
1673 582 !av_strcasecmp(ch_gb.buffer, "V")) {
1674 254 channel_index = 1;
1675 254 s->is_luma = 0;
1676
2/2
✓ Branch 1 taken 62 times.
✓ Branch 2 taken 520 times.
 582 } else if (!av_strcasecmp(ch_gb.buffer, "Y")) {
1677 62 channel_index = 1;
1678 62 s->is_luma = 1;
1679
3/4
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✓ Branch 3 taken 266 times.
✗ Branch 4 not taken.
 786 } else if (!av_strcasecmp(ch_gb.buffer, "B") ||
1680
1/2
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 532 !av_strcasecmp(ch_gb.buffer, "Z") ||
1681 266 !av_strcasecmp(ch_gb.buffer, "W")) {
1682 254 channel_index = 2;
1683 254 s->is_luma = 0;
1684
2/2
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✓ Branch 2 taken 152 times.
 266 } else if (!av_strcasecmp(ch_gb.buffer, "A")) {
1685 114 channel_index = 3;
1686 } else {
1687 152 av_log(s->avctx, AV_LOG_WARNING,
1688 "Unsupported channel %.256s.\n", ch_gb.buffer);
1689 }
1690 }
1691
1692 /* skip until you get a 0 */
1693
3/4
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✗ Branch 2 not taken.
✓ Branch 3 taken 3644 times.
✓ Branch 4 taken 1212 times.
 9712 while (bytestream2_get_bytes_left(&ch_gb) > 0 &&
1694 4856 bytestream2_get_byte(&ch_gb))
1695 3644 continue;
1696
1697
1/2
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✓ Branch 2 taken 1212 times.
 1212 if (bytestream2_get_bytes_left(&ch_gb) < 4) {
1698 ✗ av_log(s->avctx, AV_LOG_ERROR, "Incomplete header.\n");
1699 ✗ ret = AVERROR_INVALIDDATA;
1700 ✗ goto fail;
1701 }
1702
1703 1212 current_pixel_type = bytestream2_get_le32(&ch_gb);
1704
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1212 times.
 1212 if (current_pixel_type >= EXR_UNKNOWN) {
1705 ✗ avpriv_report_missing_feature(s->avctx, "Pixel type %d",
1706 current_pixel_type);
1707 ✗ ret = AVERROR_PATCHWELCOME;
1708 ✗ goto fail;
1709 }
1710
1711 1212 bytestream2_skip(&ch_gb, 4);
1712 1212 xsub = bytestream2_get_le32(&ch_gb);
1713 1212 ysub = bytestream2_get_le32(&ch_gb);
1714
1715
2/4
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✓ Branch 3 taken 1212 times.
 1212 if (xsub != 1 || ysub != 1) {
1716 ✗ avpriv_report_missing_feature(s->avctx,
1717 "Subsampling %dx%d",
1718 xsub, ysub);
1719 ✗ ret = AVERROR_PATCHWELCOME;
1720 ✗ goto fail;
1721 }
1722
1723
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 */
1724
2/2
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✓ Branch 1 taken 316 times.
 938 if (s->pixel_type != EXR_UNKNOWN &&
1725
1/2
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✓ Branch 1 taken 622 times.
 622 s->pixel_type != current_pixel_type) {
1726 ✗ av_log(s->avctx, AV_LOG_ERROR,
1727 "RGB channels not of the same depth.\n");
1728 ✗ ret = AVERROR_INVALIDDATA;
1729 ✗ goto fail;
1730 }
1731 938 s->pixel_type = current_pixel_type;
1732 938 s->channel_offsets[channel_index] = s->current_channel_offset;
1733
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 274 times.
 274 } else if (channel_index >= 0) {
1734 ✗ av_log(s->avctx, AV_LOG_WARNING,
1735 "Multiple channels with index %d.\n", channel_index);
1736 ✗ if (++dup_channels > 10) {
1737 ✗ ret = AVERROR_INVALIDDATA;
1738 ✗ goto fail;
1739 }
1740 }
1741
1742 2424 s->channels = av_realloc(s->channels,
1743 1212 ++s->nb_channels * sizeof(EXRChannel));
1744
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1212 times.
 1212 if (!s->channels) {
1745 ✗ ret = AVERROR(ENOMEM);
1746 ✗ goto fail;
1747 }
1748 1212 channel = &s->channels[s->nb_channels - 1];
1749 1212 channel->pixel_type = current_pixel_type;
1750 1212 channel->xsub = xsub;
1751 1212 channel->ysub = ysub;
1752
1753
2/2
✓ Branch 0 taken 404 times.
✓ Branch 1 taken 808 times.
 1212 if (current_pixel_type == EXR_HALF) {
1754 404 s->current_channel_offset += 2;
1755 } else {/* Float or UINT32 */
1756 808 s->current_channel_offset += 4;
1757 }
1758 }
1759
1760 /* Check if all channels are set with an offset or if the channels
1761 * are causing an overflow */
1762
2/2
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✓ Branch 1 taken 62 times.
 316 if (!s->is_luma) {/* if we expected to have at least 3 channels */
1763
1/2
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✓ Branch 1 taken 254 times.
 254 if (FFMIN3(s->channel_offsets[0],
1764 s->channel_offsets[1],
1765 s->channel_offsets[2]) < 0) {
1766 ✗ if (s->channel_offsets[0] < 0)
1767 ✗ av_log(s->avctx, AV_LOG_ERROR, "Missing red channel.\n");
1768 ✗ if (s->channel_offsets[1] < 0)
1769 ✗ av_log(s->avctx, AV_LOG_ERROR, "Missing green channel.\n");
1770 ✗ if (s->channel_offsets[2] < 0)
1771 ✗ av_log(s->avctx, AV_LOG_ERROR, "Missing blue channel.\n");
1772 ✗ ret = AVERROR_INVALIDDATA;
1773 ✗ goto fail;
1774 }
1775 }
1776
1777 // skip one last byte and update main gb
1778 316 gb->buffer = ch_gb.buffer + 1;
1779 316 continue;
1780
2/2
✓ Branch 1 taken 316 times.
✓ Branch 2 taken 3448 times.
 3764 } else if ((var_size = check_header_variable(s, "dataWindow", "box2i",
1781 316 31)) >= 0) {
1782 int xmin, ymin, xmax, ymax;
1783
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 316 times.
 316 if (!var_size) {
1784 ✗ ret = AVERROR_INVALIDDATA;
1785 ✗ goto fail;
1786 }
1787
1788 316 xmin = bytestream2_get_le32(gb);
1789 316 ymin = bytestream2_get_le32(gb);
1790 316 xmax = bytestream2_get_le32(gb);
1791 316 ymax = bytestream2_get_le32(gb);
1792
1793
3/6
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 316 if (xmin > xmax || ymin > ymax ||
1794
1/2
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✗ Branch 1 not taken.
 316 ymax == INT_MAX || xmax == INT_MAX ||
1795
1/2
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✗ Branch 1 not taken.
 316 (unsigned)xmax - xmin >= INT_MAX ||
1796
1/2
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✓ Branch 1 taken 316 times.
 316 (unsigned)ymax - ymin >= INT_MAX) {
1797 ✗ ret = AVERROR_INVALIDDATA;
1798 ✗ goto fail;
1799 }
1800 316 s->xmin = xmin;
1801 316 s->xmax = xmax;
1802 316 s->ymin = ymin;
1803 316 s->ymax = ymax;
1804 316 s->xdelta = (s->xmax - s->xmin) + 1;
1805 316 s->ydelta = (s->ymax - s->ymin) + 1;
1806
1807 316 continue;
1808
2/2
✓ Branch 1 taken 316 times.
✓ Branch 2 taken 3132 times.
 3448 } else if ((var_size = check_header_variable(s, "displayWindow",
1809 316 "box2i", 34)) >= 0) {
1810 int32_t sx, sy, dx, dy;
1811
1812
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 316 times.
 316 if (!var_size) {
1813 ✗ ret = AVERROR_INVALIDDATA;
1814 ✗ goto fail;
1815 }
1816
1817 316 sx = bytestream2_get_le32(gb);
1818 316 sy = bytestream2_get_le32(gb);
1819 316 dx = bytestream2_get_le32(gb);
1820 316 dy = bytestream2_get_le32(gb);
1821
1822 316 s->w = (unsigned)dx - sx + 1;
1823 316 s->h = (unsigned)dy - sy + 1;
1824
1825 316 continue;
1826
2/2
✓ Branch 1 taken 316 times.
✓ Branch 2 taken 2816 times.
 3132 } else if ((var_size = check_header_variable(s, "lineOrder",
1827 316 "lineOrder", 25)) >= 0) {
1828 int line_order;
1829
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 316 times.
 316 if (!var_size) {
1830 ✗ ret = AVERROR_INVALIDDATA;
1831 ✗ goto fail;
1832 }
1833
1834 316 line_order = bytestream2_get_byte(gb);
1835 316 av_log(s->avctx, AV_LOG_DEBUG, "line order: %d.\n", line_order);
1836
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 316 if (line_order > 2) {
1837 ✗ av_log(s->avctx, AV_LOG_ERROR, "Unknown line order.\n");
1838 ✗ ret = AVERROR_INVALIDDATA;
1839 ✗ goto fail;
1840 }
1841
1842 316 continue;
1843
2/2
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✓ Branch 2 taken 2668 times.
 2816 } else if ((var_size = check_header_variable(s, "pixelAspectRatio",
1844 "float", 31)) >= 0) {
1845
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✓ Branch 1 taken 148 times.
 148 if (!var_size) {
1846 ✗ ret = AVERROR_INVALIDDATA;
1847 ✗ goto fail;
1848 }
1849
1850 148 s->sar = bytestream2_get_le32(gb);
1851
1852 148 continue;
1853
2/2
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✓ Branch 2 taken 2352 times.
 2668 } else if ((var_size = check_header_variable(s, "compression",
1854 "compression", 29)) >= 0) {
1855
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 316 if (!var_size) {
1856 ✗ ret = AVERROR_INVALIDDATA;
1857 ✗ goto fail;
1858 }
1859
1860
1/2
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✗ Branch 1 not taken.
 316 if (s->compression == EXR_UNKN)
1861 316 s->compression = bytestream2_get_byte(gb);
1862 else {
1863 ✗ bytestream2_skip(gb, 1);
1864 ✗ av_log(s->avctx, AV_LOG_WARNING,
1865 "Found more than one compression attribute.\n");
1866 }
1867
1868 316 continue;
1869
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 2352 } else if ((var_size = check_header_variable(s, "tiles",
1870 44 "tiledesc", 22)) >= 0) {
1871 uint8_t tileLevel;
1872
1873
1/2
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 44 if (!s->is_tile)
1874 ✗ av_log(s->avctx, AV_LOG_WARNING,
1875 "Found tile attribute and scanline flags. Exr will be interpreted as scanline.\n");
1876
1877 44 s->tile_attr.xSize = bytestream2_get_le32(gb);
1878 44 s->tile_attr.ySize = bytestream2_get_le32(gb);
1879
1880 44 tileLevel = bytestream2_get_byte(gb);
1881 44 s->tile_attr.level_mode = tileLevel & 0x0f;
1882 44 s->tile_attr.level_round = (tileLevel >> 4) & 0x0f;
1883
1884
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 44 if (s->tile_attr.level_mode >= EXR_TILE_LEVEL_UNKNOWN) {
1885 ✗ avpriv_report_missing_feature(s->avctx, "Tile level mode %d",
1886 ✗ s->tile_attr.level_mode);
1887 ✗ ret = AVERROR_PATCHWELCOME;
1888 ✗ goto fail;
1889 }
1890
1891
1/2
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 44 if (s->tile_attr.level_round >= EXR_TILE_ROUND_UNKNOWN) {
1892 ✗ avpriv_report_missing_feature(s->avctx, "Tile level round %d",
1893 ✗ s->tile_attr.level_round);
1894 ✗ ret = AVERROR_PATCHWELCOME;
1895 ✗ goto fail;
1896 }
1897
1898 44 continue;
1899
2/2
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✓ Branch 2 taken 2124 times.
 2308 } else if ((var_size = check_header_variable(s, "writer",
1900 184 "string", 1)) >= 0) {
1901 184 uint8_t key[256] = { 0 };
1902
1903 184 bytestream2_get_buffer(gb, key, FFMIN(sizeof(key) - 1, var_size));
1904 184 av_dict_set(&metadata, "writer", key, 0);
1905
1906 184 continue;
1907
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 2124 } else if ((var_size = check_header_variable(s, "framesPerSecond",
1908 "rational", 33)) >= 0) {
1909
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 184 if (!var_size) {
1910 ✗ ret = AVERROR_INVALIDDATA;
1911 ✗ goto fail;
1912 }
1913
1914 184 s->avctx->framerate.num = bytestream2_get_le32(gb);
1915 184 s->avctx->framerate.den = bytestream2_get_le32(gb);
1916
1917 184 continue;
1918
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✓ Branch 2 taken 1932 times.
 1940 } else if ((var_size = check_header_variable(s, "chunkCount",
1919 "int", 23)) >= 0) {
1920
1921 8 s->chunk_count = bytestream2_get_le32(gb);
1922
1923 8 continue;
1924
2/2
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✓ Branch 2 taken 1914 times.
 1932 } else if ((var_size = check_header_variable(s, "type",
1925 18 "string", 16)) >= 0) {
1926 18 uint8_t key[256] = { 0 };
1927
1928 18 bytestream2_get_buffer(gb, key, FFMIN(sizeof(key) - 1, var_size));
1929
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✓ Branch 1 taken 10 times.
 18 if (strncmp("scanlineimage", key, var_size) &&
1930
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 8 strncmp("tiledimage", key, var_size)) {
1931 ✗ ret = AVERROR_PATCHWELCOME;
1932 ✗ goto fail;
1933 }
1934
1935 18 continue;
1936
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✓ Branch 2 taken 1914 times.
 1914 } else if ((var_size = check_header_variable(s, "preview",
1937 ✗ "preview", 16)) >= 0) {
1938 ✗ uint32_t pw = bytestream2_get_le32(gb);
1939 ✗ uint32_t ph = bytestream2_get_le32(gb);
1940 ✗ uint64_t psize = pw * (uint64_t)ph;
1941 ✗ if (psize > INT64_MAX / 4) {
1942 ✗ ret = AVERROR_INVALIDDATA;
1943 ✗ goto fail;
1944 }
1945 ✗ psize *= 4;
1946
1947 ✗ if ((int64_t)psize >= bytestream2_get_bytes_left(gb)) {
1948 ✗ ret = AVERROR_INVALIDDATA;
1949 ✗ goto fail;
1950 }
1951
1952 ✗ bytestream2_skip(gb, psize);
1953
1954 ✗ continue;
1955 }
1956
1957 // Check if there are enough bytes for a header
1958
1/2
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✓ Branch 2 taken 1914 times.
 1914 if (bytestream2_get_bytes_left(gb) <= 9) {
1959 ✗ av_log(s->avctx, AV_LOG_ERROR, "Incomplete header\n");
1960 ✗ ret = AVERROR_INVALIDDATA;
1961 ✗ goto fail;
1962 }
1963
1964 // Process unknown variables
1965 {
1966 1914 uint8_t name[256] = { 0 };
1967 1914 uint8_t type[256] = { 0 };
1968 1914 uint8_t value[8192] = { 0 };
1969 1914 int i = 0, size;
1970
1971
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 57680 while (bytestream2_get_bytes_left(gb) > 0 &&
1972
2/4
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✗ Branch 1 not taken.
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✗ Branch 4 not taken.
 55766 bytestream2_peek_byte(gb) && i < 255) {
1973 26926 name[i++] = bytestream2_get_byte(gb);
1974 }
1975
1976 1914 bytestream2_skip(gb, 1);
1977 1914 i = 0;
1978
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 21376 while (bytestream2_get_bytes_left(gb) > 0 &&
1979
2/4
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✗ Branch 1 not taken.
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✗ Branch 4 not taken.
 19462 bytestream2_peek_byte(gb) && i < 255) {
1980 8774 type[i++] = bytestream2_get_byte(gb);
1981 }
1982 1914 bytestream2_skip(gb, 1);
1983 1914 size = bytestream2_get_le32(gb);
1984
1985 1914 bytestream2_get_buffer(gb, value, FFMIN(sizeof(value) - 1, size));
1986
1/2
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 1914 if (size > sizeof(value) - 1)
1987 ✗ bytestream2_skip(gb, size - (sizeof(value) - 1));
1988
2/2
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✓ Branch 1 taken 1754 times.
 1914 if (!strcmp(type, "string"))
1989 160 av_dict_set(&metadata, name, value, 0);
1990 }
1991 }
1992
1993
1/2
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✓ Branch 1 taken 316 times.
 316 if (s->compression == EXR_UNKN) {
1994 ✗ av_log(s->avctx, AV_LOG_ERROR, "Missing compression attribute.\n");
1995 ✗ ret = AVERROR_INVALIDDATA;
1996 ✗ goto fail;
1997 }
1998
1999
2/2
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✓ Branch 1 taken 272 times.
 316 if (s->is_tile) {
2000
2/4
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✓ Branch 3 taken 44 times.
 44 if (s->tile_attr.xSize < 1 || s->tile_attr.ySize < 1) {
2001 ✗ av_log(s->avctx, AV_LOG_ERROR, "Invalid tile attribute.\n");
2002 ✗ ret = AVERROR_INVALIDDATA;
2003 ✗ goto fail;
2004 }
2005 }
2006
2007
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 316 times.
 316 if (bytestream2_get_bytes_left(gb) <= 0) {
2008 ✗ av_log(s->avctx, AV_LOG_ERROR, "Incomplete frame.\n");
2009 ✗ ret = AVERROR_INVALIDDATA;
2010 ✗ goto fail;
2011 }
2012
2013 316 frame->metadata = metadata;
2014
2015 // aaand we are done
2016 316 bytestream2_skip(gb, 1);
2017 316 return 0;
2018 ✗ fail:
2019 ✗ av_dict_free(&metadata);
2020 ✗ return ret;
2021 }
2022
2023 316 static int decode_frame(AVCodecContext *avctx, AVFrame *picture,
2024 int *got_frame, AVPacket *avpkt)
2025 {
2026 316 EXRContext *s = avctx->priv_data;
2027 316 GetByteContext *gb = &s->gb;
2028 uint8_t *ptr;
2029
2030 int i, y, ret, ymax;
2031 int planes;
2032 int out_line_size;
2033 int nb_blocks; /* nb scanline or nb tile */
2034 uint64_t start_offset_table;
2035 uint64_t start_next_scanline;
2036
2037 316 bytestream2_init(gb, avpkt->data, avpkt->size);
2038
2039
1/2
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✓ Branch 2 taken 316 times.
 316 if ((ret = decode_header(s, picture)) < 0)
2040 ✗ return ret;
2041
2042
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) &&
2043 ✗ s->pixel_type == EXR_HALF) {
2044 ✗ s->current_channel_offset *= 2;
2045 ✗ for (int i = 0; i < 4; i++)
2046 ✗ s->channel_offsets[i] *= 2;
2047 }
2048
2049
3/4
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✓ Branch 2 taken 10 times.
✗ Branch 3 not taken.
 316 switch (s->pixel_type) {
2050 88 case EXR_HALF:
2051
2/4
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✗ Branch 1 not taken.
✓ Branch 2 taken 88 times.
✗ Branch 3 not taken.
 88 if (!(s->compression == EXR_DWAA || s->compression == EXR_DWAB)) {
2052
2/2
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✓ Branch 1 taken 62 times.
 88 if (s->channel_offsets[3] >= 0) {
2053
2/2
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✓ Branch 1 taken 2 times.
 26 if (!s->is_luma) {
2054 24 avctx->pix_fmt = AV_PIX_FMT_GBRAPF16;
2055 } else {
2056 2 avctx->pix_fmt = AV_PIX_FMT_YAF16;
2057 }
2058 } else {
2059
2/2
✓ Branch 0 taken 58 times.
✓ Branch 1 taken 4 times.
 62 if (!s->is_luma) {
2060 58 avctx->pix_fmt = AV_PIX_FMT_GBRPF16;
2061 } else {
2062 4 avctx->pix_fmt = AV_PIX_FMT_GRAYF16;
2063 }
2064 }
2065 88 break;
2066 }
2067 case EXR_FLOAT:
2068
2/2
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✓ Branch 1 taken 130 times.
 218 if (s->channel_offsets[3] >= 0) {
2069
1/2
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✗ Branch 1 not taken.
 88 if (!s->is_luma) {
2070 88 avctx->pix_fmt = AV_PIX_FMT_GBRAPF32;
2071 } else {
2072 ✗ avctx->pix_fmt = AV_PIX_FMT_YAF32;
2073 }
2074 } else {
2075
2/2
✓ Branch 0 taken 74 times.
✓ Branch 1 taken 56 times.
 130 if (!s->is_luma) {
2076 74 avctx->pix_fmt = AV_PIX_FMT_GBRPF32;
2077 } else {
2078 56 avctx->pix_fmt = AV_PIX_FMT_GRAYF32;
2079 }
2080 }
2081 218 break;
2082 10 case EXR_UINT:
2083
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 10 times.
 10 if (s->channel_offsets[3] >= 0) {
2084 ✗ if (!s->is_luma) {
2085 ✗ avctx->pix_fmt = AV_PIX_FMT_RGBA64;
2086 } else {
2087 ✗ avctx->pix_fmt = AV_PIX_FMT_YA16;
2088 }
2089 } else {
2090
1/2
✓ Branch 0 taken 10 times.
✗ Branch 1 not taken.
 10 if (!s->is_luma) {
2091 10 avctx->pix_fmt = AV_PIX_FMT_RGB48;
2092 } else {
2093 ✗ avctx->pix_fmt = AV_PIX_FMT_GRAY16;
2094 }
2095 }
2096 10 break;
2097 ✗ default:
2098 ✗ av_log(avctx, AV_LOG_ERROR, "Missing channel list.\n");
2099 ✗ return AVERROR_INVALIDDATA;
2100 }
2101
2102 #if FF_API_EXR_GAMMA
2103
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 316 times.
 316 if (s->apply_trc_type != AVCOL_TRC_UNSPECIFIED)
2104 ✗ avctx->color_trc = s->apply_trc_type;
2105
2/4
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✗ Branch 1 not taken.
✓ Branch 2 taken 316 times.
✗ Branch 3 not taken.
 316 else if (s->gamma > 0.9999f && s->gamma < 1.0001f)
2106 #endif
2107 316 avctx->color_trc = AVCOL_TRC_LINEAR;
2108
2109
3/5
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✓ Branch 2 taken 50 times.
✗ Branch 3 not taken.
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 316 switch (s->compression) {
2110 174 case EXR_RAW:
2111 case EXR_RLE:
2112 case EXR_ZIP1:
2113 174 s->scan_lines_per_block = 1;
2114 174 break;
2115 92 case EXR_PXR24:
2116 case EXR_ZIP16:
2117 92 s->scan_lines_per_block = 16;
2118 92 break;
2119 50 case EXR_PIZ:
2120 case EXR_B44:
2121 case EXR_B44A:
2122 case EXR_DWAA:
2123 50 s->scan_lines_per_block = 32;
2124 50 break;
2125 ✗ case EXR_DWAB:
2126 ✗ s->scan_lines_per_block = 256;
2127 ✗ break;
2128 ✗ default:
2129 ✗ avpriv_report_missing_feature(avctx, "Compression %d", s->compression);
2130 ✗ return AVERROR_PATCHWELCOME;
2131 }
2132
2133 /* Verify the xmin, xmax, ymin and ymax before setting the actual image size.
2134 * It's possible for the data window can larger or outside the display window */
2135
2/4
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✗ Branch 1 not taken.
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✗ Branch 3 not taken.
 316 if (s->xmin > s->xmax || s->ymin > s->ymax ||
2136
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) {
2137 ✗ av_log(avctx, AV_LOG_ERROR, "Wrong or missing size information.\n");
2138 ✗ return AVERROR_INVALIDDATA;
2139 }
2140
2141
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 316 times.
 316 if ((ret = ff_set_dimensions(avctx, s->w, s->h)) < 0)
2142 ✗ return ret;
2143
2144 316 ff_set_sar(s->avctx, av_d2q(av_int2float(s->sar), 255));
2145
2146
2/2
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✓ Branch 1 taken 230 times.
 316 if (avctx->skip_frame >= AVDISCARD_ALL)
2147 86 return avpkt->size;
2148
2149 230 s->desc = av_pix_fmt_desc_get(avctx->pix_fmt);
2150
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 230 times.
 230 if (!s->desc)
2151 ✗ return AVERROR_INVALIDDATA;
2152
2153 230 planes = av_pix_fmt_count_planes(avctx->pix_fmt);
2154 230 out_line_size = avctx->width * s->desc->comp[0].step;
2155
2156
2/2
✓ Branch 0 taken 22 times.
✓ Branch 1 taken 208 times.
 230 if (s->is_tile) {
2157 22 nb_blocks = ((s->xdelta + s->tile_attr.xSize - 1) / s->tile_attr.xSize) *
2158 22 ((s->ydelta + s->tile_attr.ySize - 1) / s->tile_attr.ySize);
2159 } else { /* scanline */
2160 208 nb_blocks = (s->ydelta + s->scan_lines_per_block - 1) /
2161 208 s->scan_lines_per_block;
2162 }
2163
2164
1/2
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✓ Branch 2 taken 230 times.
 230 if ((ret = ff_thread_get_buffer(avctx, picture, 0)) < 0)
2165 ✗ return ret;
2166
2167
1/2
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✓ Branch 2 taken 230 times.
 230 if (bytestream2_get_bytes_left(gb)/8 < nb_blocks)
2168 ✗ return AVERROR_INVALIDDATA;
2169
2170 // check offset table and recreate it if need
2171
4/4
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✓ Branch 1 taken 22 times.
✓ Branch 3 taken 1 times.
✓ Branch 4 taken 207 times.
 230 if (!s->is_tile && bytestream2_peek_le64(gb) == 0) {
2172 PutByteContext offset_table_writer;
2173
2174 1 av_log(s->avctx, AV_LOG_DEBUG, "recreating invalid scanline offset table\n");
2175
2176 1 s->offset_table = av_realloc_f(s->offset_table, nb_blocks, 8);
2177
1/2
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✓ Branch 1 taken 1 times.
 1 if (!s->offset_table)
2178 ✗ return AVERROR(ENOMEM);
2179
2180 1 start_offset_table = bytestream2_tell(gb);
2181 1 start_next_scanline = start_offset_table + nb_blocks * 8;
2182 1 bytestream2_init_writer(&offset_table_writer, s->offset_table, nb_blocks * 8);
2183
2184
2/2
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✓ Branch 1 taken 1 times.
 9 for (y = 0; y < nb_blocks; y++) {
2185 /* write offset of prev scanline in offset table */
2186 8 bytestream2_put_le64(&offset_table_writer, start_next_scanline);
2187
2188 /* get len of next scanline */
2189 8 bytestream2_seek(gb, start_next_scanline + 4, SEEK_SET);/* skip line number */
2190 8 start_next_scanline += (bytestream2_get_le32(gb) + 8);
2191 }
2192 1 bytestream2_init(gb, s->offset_table, nb_blocks * 8);
2193 }
2194
2195 // save pointer we are going to use in decode_block
2196 230 s->buf = avpkt->data;
2197 230 s->buf_size = avpkt->size;
2198
2199 // Zero out the start if ymin is not 0
2200
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 880 for (i = 0; i < planes; i++) {
2201 650 ptr = picture->data[i];
2202
2/2
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✓ Branch 1 taken 650 times.
 890 for (y = 0; y < FFMIN(s->ymin, s->h); y++) {
2203 240 memset(ptr, 0, out_line_size);
2204 240 ptr += picture->linesize[i];
2205 }
2206 }
2207
2208 230 s->picture = picture;
2209
2210 230 avctx->execute2(avctx, decode_block, s->thread_data, NULL, nb_blocks);
2211
2212 230 ymax = FFMAX(0, s->ymax + 1);
2213 // Zero out the end if ymax+1 is not h
2214
2/2
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✓ Branch 1 taken 226 times.
 230 if (ymax < avctx->height)
2215
2/2
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✓ Branch 1 taken 4 times.
 16 for (i = 0; i < planes; i++) {
2216 12 ptr = picture->data[i] + (ymax * picture->linesize[i]);
2217
2/2
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✓ Branch 1 taken 12 times.
 2784 for (y = ymax; y < avctx->height; y++) {
2218 2772 memset(ptr, 0, out_line_size);
2219 2772 ptr += picture->linesize[i];
2220 }
2221 }
2222
2223 230 picture->pict_type = AV_PICTURE_TYPE_I;
2224 230 *got_frame = 1;
2225
2226 230 return avpkt->size;
2227 }
2228
2229 172 static av_cold int decode_init(AVCodecContext *avctx)
2230 {
2231 172 EXRContext *s = avctx->priv_data;
2232 #if FF_API_EXR_GAMMA
2233 uint32_t i;
2234 union av_intfloat32 t;
2235 172 float one_gamma = 1.0f / s->gamma;
2236 172 av_csp_trc_function trc_func = NULL;
2237 172 ff_init_float2half_tables(&s->f2h_tables);
2238 #endif
2239
2240 172 ff_init_half2float_tables(&s->h2f_tables);
2241
2242 172 s->avctx = avctx;
2243
2244 172 ff_exrdsp_init(&s->dsp);
2245
2246 #if HAVE_BIGENDIAN
2247 ff_bswapdsp_init(&s->bbdsp);
2248 #endif
2249
2250 #if FF_API_EXR_GAMMA
2251 172 trc_func = av_csp_trc_func_from_id(s->apply_trc_type);
2252
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✓ Branch 1 taken 172 times.
 172 if (trc_func) {
2253 ✗ for (i = 0; i < 65536; ++i) {
2254 ✗ t.i = half2float(i, &s->h2f_tables);
2255 ✗ t.f = trc_func(t.f);
2256 ✗ s->gamma_table[i] = float2half(av_float2int(t.f), &s->f2h_tables);
2257 }
2258
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 172 } else if (one_gamma != 1.0f) {
2259 ✗ for (i = 0; i < 65536; ++i) {
2260 ✗ t.i = half2float(i, &s->h2f_tables);
2261 /* If negative value we reuse half value */
2262 ✗ if (t.f <= 0.0f) {
2263 ✗ s->gamma_table[i] = i;
2264 } else {
2265 ✗ t.f = powf(t.f, one_gamma);
2266 ✗ s->gamma_table[i] = float2half(t.i, &s->f2h_tables);
2267 }
2268 }
2269 }
2270 #endif
2271
2272 // allocate thread data, used for non EXR_RAW compression types
2273 172 s->thread_data = av_calloc(avctx->thread_count, sizeof(*s->thread_data));
2274
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 172 if (!s->thread_data)
2275 ✗ return AVERROR(ENOMEM);
2276
2277 172 return 0;
2278 }
2279
2280 172 static av_cold int decode_end(AVCodecContext *avctx)
2281 {
2282 172 EXRContext *s = avctx->priv_data;
2283 int i;
2284
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 344 for (i = 0; i < avctx->thread_count; i++) {
2285 172 EXRThreadData *td = &s->thread_data[i];
2286 172 av_freep(&td->uncompressed_data);
2287 172 av_freep(&td->tmp);
2288 172 av_freep(&td->bitmap);
2289 172 av_freep(&td->lut);
2290 172 av_freep(&td->he);
2291 172 av_freep(&td->freq);
2292 172 av_freep(&td->ac_data);
2293 172 av_freep(&td->dc_data);
2294 172 av_freep(&td->rle_data);
2295 172 av_freep(&td->rle_raw_data);
2296 172 ff_vlc_free(&td->vlc);
2297 }
2298
2299 172 av_freep(&s->thread_data);
2300 172 av_freep(&s->channels);
2301 172 av_freep(&s->offset_table);
2302
2303 172 return 0;
2304 }
2305
2306 #define OFFSET(x) offsetof(EXRContext, x)
2307 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
2308 static const AVOption options[] = {
2309 { "layer", "Set the decoding layer", OFFSET(layer),
2310 AV_OPT_TYPE_STRING, { .str = "" }, 0, 0, VD },
2311 { "part", "Set the decoding part", OFFSET(selected_part),
2312 AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VD },
2313 #if FF_API_EXR_GAMMA
2314 { "gamma", "Set the float gamma value when decoding (deprecated, use a scaler)", OFFSET(gamma),
2315 AV_OPT_TYPE_FLOAT, { .dbl = 1.0f }, 0.001, FLT_MAX, VD | AV_OPT_FLAG_DEPRECATED },
2316
2317 // XXX: Note the abuse of the enum using AVCOL_TRC_UNSPECIFIED to subsume the existing gamma option
2318 { "apply_trc", "color transfer characteristics to apply to EXR linear input (deprecated, use a scaler)", OFFSET(apply_trc_type),
2319 AV_OPT_TYPE_INT, {.i64 = AVCOL_TRC_UNSPECIFIED }, 1, AVCOL_TRC_NB-1, VD | AV_OPT_FLAG_DEPRECATED, .unit = "apply_trc_type"},
2320 { "bt709", "BT.709", 0,
2321 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT709 }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2322 { "gamma", "gamma", 0,
2323 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_UNSPECIFIED }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2324 { "gamma22", "BT.470 M", 0,
2325 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_GAMMA22 }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2326 { "gamma28", "BT.470 BG", 0,
2327 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_GAMMA28 }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2328 { "smpte170m", "SMPTE 170 M", 0,
2329 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTE170M }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2330 { "smpte240m", "SMPTE 240 M", 0,
2331 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTE240M }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2332 { "linear", "Linear", 0,
2333 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_LINEAR }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2334 { "log", "Log", 0,
2335 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_LOG }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2336 { "log_sqrt", "Log square root", 0,
2337 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_LOG_SQRT }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2338 { "iec61966_2_4", "IEC 61966-2-4", 0,
2339 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_IEC61966_2_4 }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2340 { "bt1361", "BT.1361", 0,
2341 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT1361_ECG }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2342 { "iec61966_2_1", "IEC 61966-2-1", 0,
2343 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_IEC61966_2_1 }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2344 { "bt2020_10bit", "BT.2020 - 10 bit", 0,
2345 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT2020_10 }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2346 { "bt2020_12bit", "BT.2020 - 12 bit", 0,
2347 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT2020_12 }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2348 { "smpte2084", "SMPTE ST 2084", 0,
2349 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTEST2084 }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2350 { "smpte428_1", "SMPTE ST 428-1", 0,
2351 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTEST428_1 }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2352 #endif
2353
2354 { NULL },
2355 };
2356
2357 static const AVClass exr_class = {
2358 .class_name = "EXR",
2359 .item_name = av_default_item_name,
2360 .option = options,
2361 .version = LIBAVUTIL_VERSION_INT,
2362 };
2363
2364 const FFCodec ff_exr_decoder = {
2365 .p.name = "exr",
2366 CODEC_LONG_NAME("OpenEXR image"),
2367 .p.type = AVMEDIA_TYPE_VIDEO,
2368 .p.id = AV_CODEC_ID_EXR,
2369 .priv_data_size = sizeof(EXRContext),
2370 .init = decode_init,
2371 .close = decode_end,
2372 FF_CODEC_DECODE_CB(decode_frame),
2373 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
2374 AV_CODEC_CAP_SLICE_THREADS,
2375 .caps_internal = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
2376 .p.priv_class = &exr_class,
2377 };
2378