FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/exr.c
Date: 2026-05-03 23:58:45
Exec Total Coverage
Lines: 872 1358 64.2%
Functions: 23 31 74.2%
Branches: 478 843 56.7%
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 #define M(chr) (1<<chr - 'A')
179 int has_channel; ///< combination of flags representing the channel codes A-Z
180
181 GetByteContext gb;
182 const uint8_t *buf;
183 int buf_size;
184
185 EXRChannel *channels;
186 int nb_channels;
187 int current_channel_offset;
188 uint32_t chunk_count;
189
190 EXRThreadData *thread_data;
191
192 const char *layer;
193 int selected_part;
194
195
196 uint8_t *offset_table;
197
198 #if FF_API_EXR_GAMMA
199 enum AVColorTransferCharacteristic apply_trc_type;
200 float gamma;
201 uint16_t gamma_table[65536];
202 #endif
203
204 Float2HalfTables f2h_tables;
205 Half2FloatTables h2f_tables;
206 } EXRContext;
207
208 12853 static int zip_uncompress(const EXRContext *s, const uint8_t *src, int compressed_size,
209 int uncompressed_size, EXRThreadData *td)
210 {
211 12853 unsigned long dest_len = uncompressed_size;
212
213
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 12853 if (uncompress(td->tmp, &dest_len, src, compressed_size) != Z_OK ||
214
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 12853 dest_len != uncompressed_size)
215 ✗ return AVERROR_INVALIDDATA;
216
217 av_assert1(uncompressed_size % 2 == 0);
218
219 12853 s->dsp.predictor(td->tmp, uncompressed_size);
220 12853 s->dsp.reorder_pixels(td->uncompressed_data, td->tmp, uncompressed_size);
221
222 12853 return 0;
223 }
224
225 4848 static int rle(uint8_t *dst, const uint8_t *src,
226 int compressed_size, int uncompressed_size)
227 {
228 4848 uint8_t *d = dst;
229 4848 const int8_t *s = src;
230 4848 int ssize = compressed_size;
231 4848 int dsize = uncompressed_size;
232 4848 uint8_t *dend = d + dsize;
233 int count;
234
235
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 676771 while (ssize > 0) {
236 671923 count = *s++;
237
238
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 671923 if (count < 0) {
239 501696 count = -count;
240
241
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242
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 501696 (ssize -= count + 1) < 0)
243 ✗ return AVERROR_INVALIDDATA;
244
245
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 21708325 while (count--)
246 21206629 *d++ = *s++;
247 } else {
248 170227 count++;
249
250
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251
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 170227 (ssize -= 2) < 0)
252 ✗ return AVERROR_INVALIDDATA;
253
254
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 4913430 while (count--)
255 4743203 *d++ = *s;
256
257 170227 s++;
258 }
259 }
260
261
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 4848 if (dend != d)
262 ✗ return AVERROR_INVALIDDATA;
263
264 4848 return 0;
265 }
266
267 4848 static int rle_uncompress(const EXRContext *ctx, const uint8_t *src, int compressed_size,
268 int uncompressed_size, EXRThreadData *td)
269 {
270 4848 int ret = rle(td->tmp, src, compressed_size, uncompressed_size);
271
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 4848 if (ret < 0)
272 ✗ return ret;
273
274 av_assert1(uncompressed_size % 2 == 0);
275
276 4848 ctx->dsp.predictor(td->tmp, uncompressed_size);
277 4848 ctx->dsp.reorder_pixels(td->uncompressed_data, td->tmp, uncompressed_size);
278
279 4848 return 0;
280 }
281
282 #define USHORT_RANGE (1 << 16)
283 #define BITMAP_SIZE (1 << 13)
284
285 30 static uint16_t reverse_lut(const uint8_t *bitmap, uint16_t *lut)
286 {
287 30 int i, k = 0;
288
289
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290
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 1966080 if ((i == 0) || (bitmap[i >> 3] & (1 << (i & 7))))
291 15385 lut[k++] = i;
292
293 30 i = k - 1;
294
295 30 memset(lut + k, 0, (USHORT_RANGE - k) * 2);
296
297 30 return i;
298 }
299
300 30 static void apply_lut(const uint16_t *lut, uint16_t *dst, int dsize)
301 {
302 int i;
303
304
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 820752 for (i = 0; i < dsize; ++i)
305 820722 dst[i] = lut[dst[i]];
306 30 }
307
308 #define HUF_ENCBITS 16 // literal (value) bit length
309 #define HUF_ENCSIZE ((1 << HUF_ENCBITS) + 1) // encoding table size
310
311 30 static void huf_canonical_code_table(uint64_t *freq)
312 {
313 30 uint64_t c, n[59] = { 0 };
314 int i;
315
316
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 1966140 for (i = 0; i < HUF_ENCSIZE; i++)
317 1966110 n[freq[i]] += 1;
318
319 30 c = 0;
320
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 1770 for (i = 58; i > 0; --i) {
321 1740 uint64_t nc = ((c + n[i]) >> 1);
322 1740 n[i] = c;
323 1740 c = nc;
324 }
325
326
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 1966140 for (i = 0; i < HUF_ENCSIZE; ++i) {
327 1966110 int l = freq[i];
328
329
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 1966110 if (l > 0)
330 6417 freq[i] = l | (n[l]++ << 6);
331 }
332 30 }
333
334 #define SHORT_ZEROCODE_RUN 59
335 #define LONG_ZEROCODE_RUN 63
336 #define SHORTEST_LONG_RUN (2 + LONG_ZEROCODE_RUN - SHORT_ZEROCODE_RUN)
337 #define LONGEST_LONG_RUN (255 + SHORTEST_LONG_RUN)
338
339 30 static int huf_unpack_enc_table(GetByteContext *gb,
340 int32_t im, int32_t iM, uint64_t *freq)
341 {
342 GetBitContext gbit;
343 30 int ret = init_get_bits8(&gbit, gb->buffer, bytestream2_get_bytes_left(gb));
344
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 30 if (ret < 0)
345 ✗ return ret;
346
347
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 16636 for (; im <= iM; im++) {
348 int l;
349
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 16606 if (get_bits_left(&gbit) < 6)
350 ✗ return AVERROR_INVALIDDATA;
351 16606 l = freq[im] = get_bits(&gbit, 6);
352
353
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 16606 if (l == LONG_ZEROCODE_RUN) {
354 8339 int zerun = get_bits(&gbit, 8) + SHORTEST_LONG_RUN;
355
356
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 8339 if (im + zerun > iM + 1)
357 ✗ return AVERROR_INVALIDDATA;
358
359
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 1963965 while (zerun--)
360 1955626 freq[im++] = 0;
361
362 8339 im--;
363
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 8267 } else if (l >= SHORT_ZEROCODE_RUN) {
364 1053 int zerun = l - SHORT_ZEROCODE_RUN + 2;
365
366
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 1053 if (im + zerun > iM + 1)
367 ✗ return AVERROR_INVALIDDATA;
368
369
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 4323 while (zerun--)
370 3270 freq[im++] = 0;
371
372 1053 im--;
373 }
374 }
375
376 30 bytestream2_skip(gb, (get_bits_count(&gbit) + 7) / 8);
377 30 huf_canonical_code_table(freq);
378
379 30 return 0;
380 }
381
382 30 static int huf_build_dec_table(const EXRContext *s,
383 EXRThreadData *td, int im, int iM)
384 {
385 30 int j = 0;
386
387 30 td->run_sym = -1;
388
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 1966110 for (int i = im; i < iM; i++) {
389 1966080 td->he[j].sym = i;
390 1966080 td->he[j].len = td->freq[i] & 63;
391 1966080 td->he[j].code = td->freq[i] >> 6;
392
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 1966080 if (td->he[j].len > 32) {
393 ✗ avpriv_request_sample(s->avctx, "Too big code length");
394 ✗ return AVERROR_PATCHWELCOME;
395 }
396
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 1966080 if (td->he[j].len > 0)
397 6387 j++;
398 else
399 1959693 td->run_sym = i;
400 }
401
402
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 30 if (im > 0)
403 ✗ td->run_sym = 0;
404
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 30 else if (iM < 65535)
405 ✗ td->run_sym = 65535;
406
407
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 30 if (td->run_sym == -1) {
408 ✗ avpriv_request_sample(s->avctx, "No place for run symbol");
409 ✗ return AVERROR_PATCHWELCOME;
410 }
411
412 30 td->he[j].sym = td->run_sym;
413 30 td->he[j].len = td->freq[iM] & 63;
414
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 30 if (td->he[j].len > 32) {
415 ✗ avpriv_request_sample(s->avctx, "Too big code length");
416 ✗ return AVERROR_PATCHWELCOME;
417 }
418 30 td->he[j].code = td->freq[iM] >> 6;
419 30 j++;
420
421 30 ff_vlc_free(&td->vlc);
422 30 return ff_vlc_init_sparse(&td->vlc, 12, j,
423 30 &td->he[0].len, sizeof(td->he[0]), sizeof(td->he[0].len),
424 30 &td->he[0].code, sizeof(td->he[0]), sizeof(td->he[0].code),
425 30 &td->he[0].sym, sizeof(td->he[0]), sizeof(td->he[0].sym), 0);
426 }
427
428 30 static int huf_decode(VLC *vlc, GetByteContext *gb, int nbits, int run_sym,
429 int no, uint16_t *out)
430 {
431 GetBitContext gbit;
432 30 int oe = 0;
433
434 30 init_get_bits(&gbit, gb->buffer, nbits);
435
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 213511 while (get_bits_left(&gbit) > 0 && oe < no) {
436 213481 uint16_t x = get_vlc2(&gbit, vlc->table, 12, 3);
437
438
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 213481 if (x == run_sym) {
439 3387 int run = get_bits(&gbit, 8);
440 uint16_t fill;
441
442
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 3387 if (oe == 0 || oe + run > no)
443 ✗ return AVERROR_INVALIDDATA;
444
445 3387 fill = out[oe - 1];
446
447
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 614015 while (run-- > 0)
448 610628 out[oe++] = fill;
449 } else {
450 210094 out[oe++] = x;
451 }
452 }
453
454 30 return 0;
455 }
456
457 30 static int huf_uncompress(const EXRContext *s,
458 EXRThreadData *td,
459 GetByteContext *gb,
460 uint16_t *dst, int dst_size)
461 {
462 int32_t im, iM;
463 uint32_t nBits;
464 int ret;
465
466 30 im = bytestream2_get_le32(gb);
467 30 iM = bytestream2_get_le32(gb);
468 30 bytestream2_skip(gb, 4);
469 30 nBits = bytestream2_get_le32(gb);
470
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 30 if (im < 0 || im >= HUF_ENCSIZE ||
471
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 30 iM < 0 || iM >= HUF_ENCSIZE)
472 ✗ return AVERROR_INVALIDDATA;
473
474 30 bytestream2_skip(gb, 4);
475
476
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 30 if (!td->freq)
477 7 td->freq = av_malloc_array(HUF_ENCSIZE, sizeof(*td->freq));
478
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 30 if (!td->he)
479 7 td->he = av_calloc(HUF_ENCSIZE, sizeof(*td->he));
480
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 30 if (!td->freq || !td->he) {
481 ✗ ret = AVERROR(ENOMEM);
482 ✗ return ret;
483 }
484
485 30 memset(td->freq, 0, sizeof(*td->freq) * HUF_ENCSIZE);
486
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 30 if ((ret = huf_unpack_enc_table(gb, im, iM, td->freq)) < 0)
487 ✗ return ret;
488
489
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 30 if (nBits > 8 * bytestream2_get_bytes_left(gb)) {
490 ✗ ret = AVERROR_INVALIDDATA;
491 ✗ return ret;
492 }
493
494
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 30 if ((ret = huf_build_dec_table(s, td, im, iM)) < 0)
495 ✗ return ret;
496 30 return huf_decode(&td->vlc, gb, nBits, td->run_sym, dst_size, dst);
497 }
498
499 1091709 static inline void wdec14(uint16_t l, uint16_t h, uint16_t *a, uint16_t *b)
500 {
501 1091709 int16_t ls = l;
502 1091709 int16_t hs = h;
503 1091709 int hi = hs;
504 1091709 int ai = ls + (hi & 1) + (hi >> 1);
505 1091709 int16_t as = ai;
506 1091709 int16_t bs = ai - hi;
507
508 1091709 *a = as;
509 1091709 *b = bs;
510 1091709 }
511
512 #define NBITS 16
513 #define A_OFFSET (1 << (NBITS - 1))
514 #define MOD_MASK ((1 << NBITS) - 1)
515
516 ✗ static inline void wdec16(uint16_t l, uint16_t h, uint16_t *a, uint16_t *b)
517 {
518 ✗ int m = l;
519 ✗ int d = h;
520 ✗ int bb = (m - (d >> 1)) & MOD_MASK;
521 ✗ int aa = (d + bb - A_OFFSET) & MOD_MASK;
522 ✗ *b = bb;
523 ✗ *a = aa;
524 ✗ }
525
526 102 static void wav_decode(uint16_t *in, int nx, int ox,
527 int ny, int oy, uint16_t mx)
528 {
529 102 int w14 = (mx < (1 << 14));
530 102 int n = (nx > ny) ? ny : nx;
531 102 int p = 1;
532 int p2;
533
534
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 693 while (p <= n)
535 591 p <<= 1;
536
537 102 p >>= 1;
538 102 p2 = p;
539 102 p >>= 1;
540
541
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 591 while (p >= 1) {
542 489 uint16_t *py = in;
543 489 uint16_t *ey = in + oy * (ny - p2);
544 uint16_t i00, i01, i10, i11;
545 489 int oy1 = oy * p;
546 489 int oy2 = oy * p2;
547 489 int ox1 = ox * p;
548 489 int ox2 = ox * p2;
549
550
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 3429 for (; py <= ey; py += oy2) {
551 2940 uint16_t *px = py;
552 2940 uint16_t *ex = py + ox * (nx - p2);
553
554
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 275691 for (; px <= ex; px += ox2) {
555 272751 uint16_t *p01 = px + ox1;
556 272751 uint16_t *p10 = px + oy1;
557 272751 uint16_t *p11 = p10 + ox1;
558
559
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 272751 if (w14) {
560 272751 wdec14(*px, *p10, &i00, &i10);
561 272751 wdec14(*p01, *p11, &i01, &i11);
562 272751 wdec14(i00, i01, px, p01);
563 272751 wdec14(i10, i11, p10, p11);
564 } else {
565 ✗ wdec16(*px, *p10, &i00, &i10);
566 ✗ wdec16(*p01, *p11, &i01, &i11);
567 ✗ wdec16(i00, i01, px, p01);
568 ✗ wdec16(i10, i11, p10, p11);
569 }
570 }
571
572
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 2940 if (nx & p) {
573 324 uint16_t *p10 = px + oy1;
574
575
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 324 if (w14)
576 324 wdec14(*px, *p10, &i00, p10);
577 else
578 ✗ wdec16(*px, *p10, &i00, p10);
579
580 324 *px = i00;
581 }
582 }
583
584
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 489 if (ny & p) {
585 15 uint16_t *px = py;
586 15 uint16_t *ex = py + ox * (nx - p2);
587
588
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 396 for (; px <= ex; px += ox2) {
589 381 uint16_t *p01 = px + ox1;
590
591
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 381 if (w14)
592 381 wdec14(*px, *p01, &i00, p01);
593 else
594 ✗ wdec16(*px, *p01, &i00, p01);
595
596 381 *px = i00;
597 }
598 }
599
600 489 p2 = p;
601 489 p >>= 1;
602 }
603 102 }
604
605 30 static int piz_uncompress(const EXRContext *s, const uint8_t *src, int ssize,
606 int dsize, EXRThreadData *td)
607 {
608 GetByteContext gb;
609 uint16_t maxval, min_non_zero, max_non_zero;
610 uint16_t *ptr;
611 30 uint16_t *tmp = (uint16_t *)td->tmp;
612 uint16_t *out;
613 uint16_t *in;
614 int ret, i, j;
615 int pixel_half_size;/* 1 for half, 2 for float and uint32 */
616 EXRChannel *channel;
617 int tmp_offset;
618
619
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 30 if (!td->bitmap)
620 7 td->bitmap = av_malloc(BITMAP_SIZE);
621
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 30 if (!td->lut)
622 7 td->lut = av_malloc(1 << 17);
623
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 30 if (!td->bitmap || !td->lut) {
624 ✗ av_freep(&td->bitmap);
625 ✗ av_freep(&td->lut);
626 ✗ return AVERROR(ENOMEM);
627 }
628
629 30 bytestream2_init(&gb, src, ssize);
630 30 min_non_zero = bytestream2_get_le16(&gb);
631 30 max_non_zero = bytestream2_get_le16(&gb);
632
633
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 30 if (max_non_zero >= BITMAP_SIZE)
634 ✗ return AVERROR_INVALIDDATA;
635
636 30 memset(td->bitmap, 0, FFMIN(min_non_zero, BITMAP_SIZE));
637
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 30 if (min_non_zero <= max_non_zero)
638 30 bytestream2_get_buffer(&gb, td->bitmap + min_non_zero,
639 30 max_non_zero - min_non_zero + 1);
640 30 memset(td->bitmap + max_non_zero + 1, 0, BITMAP_SIZE - max_non_zero - 1);
641
642
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 30 if (bytestream2_get_bytes_left(&gb) < 4)
643 ✗ return AVERROR_INVALIDDATA;
644
645 30 maxval = reverse_lut(td->bitmap, td->lut);
646
647 30 bytestream2_skip(&gb, 4);
648 30 ret = huf_uncompress(s, td, &gb, tmp, dsize / sizeof(uint16_t));
649
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 30 if (ret)
650 ✗ return ret;
651
652 30 ptr = tmp;
653
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 120 for (i = 0; i < s->nb_channels; i++) {
654 90 channel = &s->channels[i];
655
656
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 90 if (channel->pixel_type == EXR_HALF)
657 78 pixel_half_size = 1;
658 else
659 12 pixel_half_size = 2;
660
661
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 192 for (j = 0; j < pixel_half_size; j++)
662 102 wav_decode(ptr + j, td->xsize, pixel_half_size, td->ysize,
663 102 td->xsize * pixel_half_size, maxval);
664 90 ptr += td->xsize * td->ysize * pixel_half_size;
665 }
666
667 30 apply_lut(td->lut, tmp, dsize / sizeof(uint16_t));
668
669 30 out = (uint16_t *)td->uncompressed_data;
670
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 921 for (i = 0; i < td->ysize; i++) {
671 891 tmp_offset = 0;
672
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 3564 for (j = 0; j < s->nb_channels; j++) {
673 2673 channel = &s->channels[j];
674
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 2673 if (channel->pixel_type == EXR_HALF)
675 2289 pixel_half_size = 1;
676 else
677 384 pixel_half_size = 2;
678
679 2673 in = tmp + tmp_offset * td->xsize * td->ysize + i * td->xsize * pixel_half_size;
680 2673 tmp_offset += pixel_half_size;
681
682 #if HAVE_BIGENDIAN
683 s->bbdsp.bswap16_buf(out, in, td->xsize * pixel_half_size);
684 #else
685 2673 memcpy(out, in, td->xsize * 2 * pixel_half_size);
686 #endif
687 2673 out += td->xsize * pixel_half_size;
688 }
689 }
690
691 30 return 0;
692 }
693
694 61 static int pxr24_uncompress(const EXRContext *s, const uint8_t *src,
695 int compressed_size, int uncompressed_size,
696 EXRThreadData *td)
697 {
698 61 unsigned long dest_len, expected_len = 0;
699 61 const uint8_t *in = td->tmp;
700 uint8_t *out;
701 int c, i, j;
702
703
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 279 for (i = 0; i < s->nb_channels; i++) {
704
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 218 if (s->channels[i].pixel_type == EXR_FLOAT) {
705 31 expected_len += (td->xsize * td->ysize * 3);/* PRX 24 store float in 24 bit instead of 32 */
706
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 187 } else if (s->channels[i].pixel_type == EXR_HALF) {
707 181 expected_len += (td->xsize * td->ysize * 2);
708 } else {//UINT 32
709 6 expected_len += (td->xsize * td->ysize * 4);
710 }
711 }
712
713 61 dest_len = expected_len;
714
715
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 61 if (uncompress(td->tmp, &dest_len, src, compressed_size) != Z_OK) {
716 ✗ return AVERROR_INVALIDDATA;
717
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 61 } else if (dest_len != expected_len) {
718 ✗ return AVERROR_INVALIDDATA;
719 }
720
721 61 out = td->uncompressed_data;
722
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 950 for (i = 0; i < td->ysize; i++)
723
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 3839 for (c = 0; c < s->nb_channels; c++) {
724 2950 EXRChannel *channel = &s->channels[c];
725 const uint8_t *ptr[4];
726 2950 uint32_t pixel = 0;
727
728
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 2950 switch (channel->pixel_type) {
729 248 case EXR_FLOAT:
730 248 ptr[0] = in;
731 248 ptr[1] = ptr[0] + td->xsize;
732 248 ptr[2] = ptr[1] + td->xsize;
733 248 in = ptr[2] + td->xsize;
734
735
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 3224 for (j = 0; j < td->xsize; ++j) {
736 2976 uint32_t diff = ((unsigned)*(ptr[0]++) << 24) |
737 2976 (*(ptr[1]++) << 16) |
738 2976 (*(ptr[2]++) << 8);
739 2976 pixel += diff;
740 2976 bytestream_put_le32(&out, pixel);
741 }
742 248 break;
743 2651 case EXR_HALF:
744 2651 ptr[0] = in;
745 2651 ptr[1] = ptr[0] + td->xsize;
746 2651 in = ptr[1] + td->xsize;
747
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 1925690 for (j = 0; j < td->xsize; j++) {
748 1923039 uint32_t diff = (*(ptr[0]++) << 8) | *(ptr[1]++);
749
750 1923039 pixel += diff;
751 1923039 bytestream_put_le16(&out, pixel);
752 }
753 2651 break;
754 51 case EXR_UINT:
755 51 ptr[0] = in;
756 51 ptr[1] = ptr[0] + td->xsize;
757 51 ptr[2] = ptr[1] + td->xsize;
758 51 ptr[3] = ptr[2] + td->xsize;
759 51 in = ptr[3] + td->xsize;
760
761
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 690 for (j = 0; j < td->xsize; ++j) {
762 639 uint32_t diff = ((uint32_t)*(ptr[0]++) << 24) |
763 639 (*(ptr[1]++) << 16) |
764 639 (*(ptr[2]++) << 8 ) |
765 639 (*(ptr[3]++));
766 639 pixel += diff;
767 639 bytestream_put_le32(&out, pixel);
768 }
769 51 break;
770 ✗ default:
771 ✗ return AVERROR_INVALIDDATA;
772 }
773 }
774
775 61 return 0;
776 }
777
778 59279 static void unpack_14(const uint8_t b[14], uint16_t s[16])
779 {
780 59279 uint16_t shift = (b[ 2] >> 2) & 15;
781 59279 uint16_t bias = (0x20 << shift);
782 int i;
783
784 59279 s[ 0] = (b[0] << 8) | b[1];
785
786 59279 s[ 4] = s[ 0] + ((((b[ 2] << 4) | (b[ 3] >> 4)) & 0x3f) << shift) - bias;
787 59279 s[ 8] = s[ 4] + ((((b[ 3] << 2) | (b[ 4] >> 6)) & 0x3f) << shift) - bias;
788 59279 s[12] = s[ 8] + ((b[ 4] & 0x3f) << shift) - bias;
789
790 59279 s[ 1] = s[ 0] + ((b[ 5] >> 2) << shift) - bias;
791 59279 s[ 5] = s[ 4] + ((((b[ 5] << 4) | (b[ 6] >> 4)) & 0x3f) << shift) - bias;
792 59279 s[ 9] = s[ 8] + ((((b[ 6] << 2) | (b[ 7] >> 6)) & 0x3f) << shift) - bias;
793 59279 s[13] = s[12] + ((b[ 7] & 0x3f) << shift) - bias;
794
795 59279 s[ 2] = s[ 1] + ((b[ 8] >> 2) << shift) - bias;
796 59279 s[ 6] = s[ 5] + ((((b[ 8] << 4) | (b[ 9] >> 4)) & 0x3f) << shift) - bias;
797 59279 s[10] = s[ 9] + ((((b[ 9] << 2) | (b[10] >> 6)) & 0x3f) << shift) - bias;
798 59279 s[14] = s[13] + ((b[10] & 0x3f) << shift) - bias;
799
800 59279 s[ 3] = s[ 2] + ((b[11] >> 2) << shift) - bias;
801 59279 s[ 7] = s[ 6] + ((((b[11] << 4) | (b[12] >> 4)) & 0x3f) << shift) - bias;
802 59279 s[11] = s[10] + ((((b[12] << 2) | (b[13] >> 6)) & 0x3f) << shift) - bias;
803 59279 s[15] = s[14] + ((b[13] & 0x3f) << shift) - bias;
804
805
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 1007743 for (i = 0; i < 16; ++i) {
806
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 948464 if (s[i] & 0x8000)
807 942347 s[i] &= 0x7fff;
808 else
809 6117 s[i] = ~s[i];
810 }
811 59279 }
812
813 106 static void unpack_3(const uint8_t b[3], uint16_t s[16])
814 {
815 int i;
816
817 106 s[0] = (b[0] << 8) | b[1];
818
819
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 106 if (s[0] & 0x8000)
820 105 s[0] &= 0x7fff;
821 else
822 1 s[0] = ~s[0];
823
824
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 1696 for (i = 1; i < 16; i++)
825 1590 s[i] = s[0];
826 106 }
827
828
829 23 static int b44_uncompress(const EXRContext *s, const uint8_t *src, int compressed_size,
830 int uncompressed_size, EXRThreadData *td) {
831 23 const int8_t *sr = src;
832 23 int stay_to_uncompress = compressed_size;
833 int nb_b44_block_w, nb_b44_block_h;
834 int index_tl_x, index_tl_y, index_out, index_tmp;
835 uint16_t tmp_buffer[16]; /* B44 use 4x4 half float pixel */
836 int c, iY, iX, y, x;
837 23 int target_channel_offset = 0;
838
839 /* calc B44 block count */
840 23 nb_b44_block_w = td->xsize / 4;
841
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 23 if ((td->xsize % 4) != 0)
842 13 nb_b44_block_w++;
843
844 23 nb_b44_block_h = td->ysize / 4;
845
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 23 if ((td->ysize % 4) != 0)
846 6 nb_b44_block_h++;
847
848
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 156 for (c = 0; c < s->nb_channels; c++) {
849
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 133 if (s->channels[c].pixel_type == EXR_HALF) {/* B44 only compress half float data */
850
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 459 for (iY = 0; iY < nb_b44_block_h; iY++) {
851
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 59759 for (iX = 0; iX < nb_b44_block_w; iX++) {/* For each B44 block */
852
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 59385 if (stay_to_uncompress < 3)
853 ✗ return AVERROR_INVALIDDATA;
854
855
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 59385 if (src[compressed_size - stay_to_uncompress + 2] == 0xfc) { /* B44A block */
856 106 unpack_3(sr, tmp_buffer);
857 106 sr += 3;
858 106 stay_to_uncompress -= 3;
859 } else {/* B44 Block */
860
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 59279 if (stay_to_uncompress < 14)
861 ✗ return AVERROR_INVALIDDATA;
862 59279 unpack_14(sr, tmp_buffer);
863 59279 sr += 14;
864 59279 stay_to_uncompress -= 14;
865 }
866
867 /* copy data to uncompress buffer (B44 block can exceed target resolution)*/
868 59385 index_tl_x = iX * 4;
869 59385 index_tl_y = iY * 4;
870
871
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 295761 for (y = index_tl_y; y < FFMIN(index_tl_y + 4, td->ysize); y++) {
872
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 1180363 for (x = index_tl_x; x < FFMIN(index_tl_x + 4, td->xsize); x++) {
873 943987 index_out = target_channel_offset * td->xsize + y * td->channel_line_size + 2 * x;
874 943987 index_tmp = (y-index_tl_y) * 4 + (x-index_tl_x);
875 943987 td->uncompressed_data[index_out] = tmp_buffer[index_tmp] & 0xff;
876 943987 td->uncompressed_data[index_out + 1] = tmp_buffer[index_tmp] >> 8;
877 }
878 }
879 }
880 }
881 85 target_channel_offset += 2;
882 } else {/* Float or UINT 32 channel */
883
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 48 if (stay_to_uncompress < td->ysize * td->xsize * 4)
884 ✗ return AVERROR_INVALIDDATA;
885
886
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 448 for (y = 0; y < td->ysize; y++) {
887 400 index_out = target_channel_offset * td->xsize + y * td->channel_line_size;
888 400 memcpy(&td->uncompressed_data[index_out], sr, td->xsize * 4);
889 400 sr += td->xsize * 4;
890 }
891 48 target_channel_offset += 4;
892
893 48 stay_to_uncompress -= td->ysize * td->xsize * 4;
894 }
895 }
896
897 23 return 0;
898 }
899
900 ✗ static int ac_uncompress(const EXRContext *s, GetByteContext *gb, float *block)
901 {
902 ✗ int ret = 0, n = 1;
903
904 ✗ while (n < 64) {
905 ✗ uint16_t val = bytestream2_get_ne16(gb);
906
907 ✗ if (val == 0xff00) {
908 ✗ n = 64;
909 ✗ } else if ((val >> 8) == 0xff) {
910 ✗ n += val & 0xff;
911 } else {
912 ✗ ret = n;
913 ✗ block[ff_zigzag_direct[n]] = av_int2float(half2float(val, &s->h2f_tables));
914 ✗ n++;
915 }
916 }
917
918 ✗ return ret;
919 }
920
921 ✗ static void idct_1d(float *blk, int step)
922 {
923 ✗ const float a = .5f * cosf( M_PI / 4.f);
924 ✗ const float b = .5f * cosf( M_PI / 16.f);
925 ✗ const float c = .5f * cosf( M_PI / 8.f);
926 ✗ const float d = .5f * cosf(3.f*M_PI / 16.f);
927 ✗ const float e = .5f * cosf(5.f*M_PI / 16.f);
928 ✗ const float f = .5f * cosf(3.f*M_PI / 8.f);
929 ✗ const float g = .5f * cosf(7.f*M_PI / 16.f);
930
931 float alpha[4], beta[4], theta[4], gamma[4];
932
933 ✗ alpha[0] = c * blk[2 * step];
934 ✗ alpha[1] = f * blk[2 * step];
935 ✗ alpha[2] = c * blk[6 * step];
936 ✗ alpha[3] = f * blk[6 * step];
937
938 ✗ beta[0] = b * blk[1 * step] + d * blk[3 * step] + e * blk[5 * step] + g * blk[7 * step];
939 ✗ beta[1] = d * blk[1 * step] - g * blk[3 * step] - b * blk[5 * step] - e * blk[7 * step];
940 ✗ beta[2] = e * blk[1 * step] - b * blk[3 * step] + g * blk[5 * step] + d * blk[7 * step];
941 ✗ beta[3] = g * blk[1 * step] - e * blk[3 * step] + d * blk[5 * step] - b * blk[7 * step];
942
943 ✗ theta[0] = a * (blk[0 * step] + blk[4 * step]);
944 ✗ theta[3] = a * (blk[0 * step] - blk[4 * step]);
945
946 ✗ theta[1] = alpha[0] + alpha[3];
947 ✗ theta[2] = alpha[1] - alpha[2];
948
949 ✗ gamma[0] = theta[0] + theta[1];
950 ✗ gamma[1] = theta[3] + theta[2];
951 ✗ gamma[2] = theta[3] - theta[2];
952 ✗ gamma[3] = theta[0] - theta[1];
953
954 ✗ blk[0 * step] = gamma[0] + beta[0];
955 ✗ blk[1 * step] = gamma[1] + beta[1];
956 ✗ blk[2 * step] = gamma[2] + beta[2];
957 ✗ blk[3 * step] = gamma[3] + beta[3];
958
959 ✗ blk[4 * step] = gamma[3] - beta[3];
960 ✗ blk[5 * step] = gamma[2] - beta[2];
961 ✗ blk[6 * step] = gamma[1] - beta[1];
962 ✗ blk[7 * step] = gamma[0] - beta[0];
963 ✗ }
964
965 ✗ static void dct_inverse(float *block)
966 {
967 ✗ for (int i = 0; i < 8; i++)
968 ✗ idct_1d(block + i, 8);
969
970 ✗ for (int i = 0; i < 8; i++) {
971 ✗ idct_1d(block, 1);
972 ✗ block += 8;
973 }
974 ✗ }
975
976 ✗ static void convert(float y, float u, float v,
977 float *b, float *g, float *r)
978 {
979 ✗ *r = y + 1.5747f * v;
980 ✗ *g = y - 0.1873f * u - 0.4682f * v;
981 ✗ *b = y + 1.8556f * u;
982 ✗ }
983
984 ✗ static float to_linear(float x, float scale)
985 {
986 ✗ float ax = fabsf(x);
987
988 ✗ if (ax <= 1.f) {
989 ✗ return FFSIGN(x) * powf(ax, 2.2f * scale);
990 } else {
991 ✗ const float log_base = expf(2.2f * scale);
992
993 ✗ return FFSIGN(x) * powf(log_base, ax - 1.f);
994 }
995 }
996
997 ✗ static int dwa_uncompress(const EXRContext *s, const uint8_t *src, int compressed_size,
998 int uncompressed_size, EXRThreadData *td)
999 {
1000 int64_t version, lo_usize, lo_size;
1001 int64_t ac_size, dc_size, rle_usize, rle_csize, rle_raw_size;
1002 int64_t ac_count, dc_count, ac_compression;
1003 ✗ const int dc_w = (td->xsize + 7) >> 3;
1004 ✗ const int dc_h = (td->ysize + 7) >> 3;
1005 GetByteContext gb, agb;
1006 int skip, ret;
1007 ✗ int have_rle = 0;
1008
1009 ✗ if (compressed_size <= 88)
1010 ✗ return AVERROR_INVALIDDATA;
1011
1012 ✗ version = AV_RL64(src + 0);
1013 ✗ if (version != 2)
1014 ✗ return AVERROR_INVALIDDATA;
1015
1016 ✗ if (s->nb_channels < 3) {
1017 ✗ avpriv_request_sample(s->avctx, "Gray DWA");
1018 ✗ return AVERROR_PATCHWELCOME;
1019 }
1020
1021 ✗ lo_usize = AV_RL64(src + 8);
1022 ✗ lo_size = AV_RL64(src + 16);
1023 ✗ ac_size = AV_RL64(src + 24);
1024 ✗ dc_size = AV_RL64(src + 32);
1025 ✗ rle_csize = AV_RL64(src + 40);
1026 ✗ rle_usize = AV_RL64(src + 48);
1027 ✗ rle_raw_size = AV_RL64(src + 56);
1028 ✗ ac_count = AV_RL64(src + 64);
1029 ✗ dc_count = AV_RL64(src + 72);
1030 ✗ ac_compression = AV_RL64(src + 80);
1031
1032 ✗ if ( compressed_size < (uint64_t)(lo_size | ac_size | dc_size | rle_csize) || compressed_size < 88LL + lo_size + ac_size + dc_size + rle_csize
1033 ✗ || ac_count > (uint64_t)INT_MAX/2
1034 )
1035 ✗ return AVERROR_INVALIDDATA;
1036
1037 ✗ if (ac_size <= 0) {
1038 ✗ avpriv_request_sample(s->avctx, "Zero ac_size");
1039 ✗ return AVERROR_INVALIDDATA;
1040 }
1041
1042 ✗ if ((uint64_t)rle_raw_size > INT_MAX) {
1043 ✗ avpriv_request_sample(s->avctx, "Too big rle_raw_size");
1044 ✗ return AVERROR_INVALIDDATA;
1045 }
1046
1047 ✗ if (td->xsize % 8 || td->ysize % 8) {
1048 ✗ avpriv_request_sample(s->avctx, "odd dimensions DWA");
1049 }
1050
1051 ✗ bytestream2_init(&gb, src + 88, compressed_size - 88);
1052 ✗ skip = bytestream2_get_le16(&gb);
1053 ✗ if (skip < 2)
1054 ✗ return AVERROR_INVALIDDATA;
1055
1056 ✗ bytestream2_skip(&gb, skip - 2);
1057
1058 ✗ if (lo_size > 0) {
1059 ✗ if (lo_usize > uncompressed_size)
1060 ✗ return AVERROR_INVALIDDATA;
1061 ✗ bytestream2_skip(&gb, lo_size);
1062 }
1063
1064 ✗ if (ac_size > 0) {
1065 unsigned long dest_len;
1066 ✗ GetByteContext agb = gb;
1067
1068 ✗ if (ac_count > 3LL * td->xsize * s->scan_lines_per_block)
1069 ✗ return AVERROR_INVALIDDATA;
1070
1071 ✗ dest_len = ac_count * 2LL;
1072
1073 ✗ av_fast_padded_malloc(&td->ac_data, &td->ac_size, dest_len);
1074 ✗ if (!td->ac_data)
1075 ✗ return AVERROR(ENOMEM);
1076
1077 ✗ switch (ac_compression) {
1078 ✗ case 0:
1079 ✗ ret = huf_uncompress(s, td, &agb, (int16_t *)td->ac_data, ac_count);
1080 ✗ if (ret < 0)
1081 ✗ return ret;
1082 ✗ break;
1083 ✗ case 1:
1084 ✗ if (uncompress(td->ac_data, &dest_len, agb.buffer, ac_size) != Z_OK ||
1085 ✗ dest_len != ac_count * 2LL)
1086 ✗ return AVERROR_INVALIDDATA;
1087 ✗ break;
1088 ✗ default:
1089 ✗ return AVERROR_INVALIDDATA;
1090 }
1091
1092 ✗ bytestream2_skip(&gb, ac_size);
1093 }
1094
1095 {
1096 unsigned long dest_len;
1097 ✗ GetByteContext agb = gb;
1098
1099 ✗ if (dc_count != dc_w * dc_h * 3)
1100 ✗ return AVERROR_INVALIDDATA;
1101
1102 ✗ dest_len = dc_count * 2LL;
1103
1104 ✗ av_fast_padded_malloc(&td->dc_data, &td->dc_size, FFALIGN(dest_len, 64) * 2);
1105 ✗ if (!td->dc_data)
1106 ✗ return AVERROR(ENOMEM);
1107
1108 ✗ if (uncompress(td->dc_data + FFALIGN(dest_len, 64), &dest_len, agb.buffer, dc_size) != Z_OK ||
1109 ✗ (dest_len != dc_count * 2LL))
1110 ✗ return AVERROR_INVALIDDATA;
1111
1112 ✗ s->dsp.predictor(td->dc_data + FFALIGN(dest_len, 64), dest_len);
1113 ✗ s->dsp.reorder_pixels(td->dc_data, td->dc_data + FFALIGN(dest_len, 64), dest_len);
1114
1115 ✗ bytestream2_skip(&gb, dc_size);
1116 }
1117
1118 ✗ if (rle_raw_size > 0 && rle_csize > 0 && rle_usize > 0) {
1119 ✗ unsigned long dest_len = rle_usize;
1120
1121 ✗ if (2LL * td->xsize * td->ysize > rle_raw_size)
1122 ✗ return AVERROR_INVALIDDATA;
1123
1124 ✗ av_fast_padded_malloc(&td->rle_data, &td->rle_size, rle_usize);
1125 ✗ if (!td->rle_data)
1126 ✗ return AVERROR(ENOMEM);
1127
1128 ✗ av_fast_padded_malloc(&td->rle_raw_data, &td->rle_raw_size, rle_raw_size);
1129 ✗ if (!td->rle_raw_data)
1130 ✗ return AVERROR(ENOMEM);
1131
1132 ✗ if (uncompress(td->rle_data, &dest_len, gb.buffer, rle_csize) != Z_OK ||
1133 ✗ (dest_len != rle_usize))
1134 ✗ return AVERROR_INVALIDDATA;
1135
1136 ✗ ret = rle(td->rle_raw_data, td->rle_data, rle_usize, rle_raw_size);
1137 ✗ if (ret < 0)
1138 ✗ return ret;
1139 ✗ bytestream2_skip(&gb, rle_csize);
1140
1141 ✗ have_rle = 1;
1142 }
1143
1144 ✗ bytestream2_init(&agb, td->ac_data, ac_count * 2);
1145
1146 ✗ for (int y = 0; y < td->ysize; y += 8) {
1147 ✗ for (int x = 0; x < td->xsize; x += 8) {
1148 ✗ const int o = s->nb_channels == 4;
1149 ✗ float *yb = td->block[0];
1150 ✗ float *ub = td->block[1];
1151 ✗ float *vb = td->block[2];
1152 ✗ int bw = FFMIN(8, td->xsize - x);
1153 ✗ int bh = FFMIN(8, td->ysize - y);
1154
1155 ✗ memset(td->block, 0, sizeof(td->block));
1156
1157 ✗ for (int j = 0; j < 3; j++) {
1158 ✗ float *block = td->block[j];
1159 ✗ const int idx = (x >> 3) + (y >> 3) * dc_w + dc_w * dc_h * j;
1160 ✗ uint16_t *dc = (uint16_t *)td->dc_data;
1161 union av_intfloat32 dc_val;
1162
1163 ✗ dc_val.i = half2float(dc[idx], &s->h2f_tables);
1164
1165 ✗ block[0] = dc_val.f;
1166 ✗ ac_uncompress(s, &agb, block);
1167 ✗ dct_inverse(block);
1168 }
1169
1170 ✗ if (s->pixel_type == EXR_HALF) {
1171 ✗ uint16_t *bo = ((uint16_t *)td->uncompressed_data) +
1172 ✗ y * td->xsize * s->nb_channels + td->xsize * (o + 0) + x;
1173 ✗ uint16_t *go = ((uint16_t *)td->uncompressed_data) +
1174 ✗ y * td->xsize * s->nb_channels + td->xsize * (o + 1) + x;
1175 ✗ uint16_t *ro = ((uint16_t *)td->uncompressed_data) +
1176 ✗ y * td->xsize * s->nb_channels + td->xsize * (o + 2) + x;
1177
1178 ✗ for (int yy = 0; yy < bh; yy++) {
1179 ✗ for (int xx = 0; xx < bw; xx++) {
1180 ✗ const int idx = xx + yy * 8;
1181 float b, g, r;
1182
1183 ✗ convert(yb[idx], ub[idx], vb[idx], &b, &g, &r);
1184
1185 ✗ bo[xx] = float2half(av_float2int(to_linear(b, 1.f)), &s->f2h_tables);
1186 ✗ go[xx] = float2half(av_float2int(to_linear(g, 1.f)), &s->f2h_tables);
1187 ✗ ro[xx] = float2half(av_float2int(to_linear(r, 1.f)), &s->f2h_tables);
1188 }
1189
1190 ✗ bo += td->xsize * s->nb_channels;
1191 ✗ go += td->xsize * s->nb_channels;
1192 ✗ ro += td->xsize * s->nb_channels;
1193 }
1194 } else {
1195 ✗ float *bo = ((float *)td->uncompressed_data) +
1196 ✗ y * td->xsize * s->nb_channels + td->xsize * (o + 0) + x;
1197 ✗ float *go = ((float *)td->uncompressed_data) +
1198 ✗ y * td->xsize * s->nb_channels + td->xsize * (o + 1) + x;
1199 ✗ float *ro = ((float *)td->uncompressed_data) +
1200 ✗ y * td->xsize * s->nb_channels + td->xsize * (o + 2) + x;
1201
1202 ✗ for (int yy = 0; yy < bh; yy++) {
1203 ✗ for (int xx = 0; xx < bw; xx++) {
1204 ✗ const int idx = xx + yy * 8;
1205
1206 ✗ convert(yb[idx], ub[idx], vb[idx], &bo[xx], &go[xx], &ro[xx]);
1207
1208 ✗ bo[xx] = to_linear(bo[xx], 1.f);
1209 ✗ go[xx] = to_linear(go[xx], 1.f);
1210 ✗ ro[xx] = to_linear(ro[xx], 1.f);
1211 }
1212
1213 ✗ bo += td->xsize * s->nb_channels;
1214 ✗ go += td->xsize * s->nb_channels;
1215 ✗ ro += td->xsize * s->nb_channels;
1216 }
1217 }
1218 }
1219 }
1220
1221 ✗ if (s->nb_channels < 4)
1222 ✗ return 0;
1223
1224 ✗ if (s->pixel_type == EXR_HALF) {
1225 ✗ for (int y = 0; y < td->ysize && have_rle; y++) {
1226 ✗ uint16_t *ao = ((uint16_t *)td->uncompressed_data) + y * td->xsize * s->nb_channels;
1227 ✗ uint8_t *ai0 = td->rle_raw_data + y * td->xsize;
1228 ✗ uint8_t *ai1 = td->rle_raw_data + y * td->xsize + rle_raw_size / 2;
1229
1230 ✗ for (int x = 0; x < td->xsize; x++)
1231 ✗ ao[x] = ai0[x] | (ai1[x] << 8);
1232 }
1233 } else {
1234 ✗ for (int y = 0; y < td->ysize && have_rle; y++) {
1235 ✗ uint32_t *ao = ((uint32_t *)td->uncompressed_data) + y * td->xsize * s->nb_channels;
1236 ✗ uint8_t *ai0 = td->rle_raw_data + y * td->xsize;
1237 ✗ uint8_t *ai1 = td->rle_raw_data + y * td->xsize + rle_raw_size / 2;
1238
1239 ✗ for (int x = 0; x < td->xsize; x++) {
1240 ✗ uint16_t ha = ai0[x] | (ai1[x] << 8);
1241
1242 ✗ ao[x] = half2float(ha, &s->h2f_tables);
1243 }
1244 }
1245 }
1246
1247 ✗ return 0;
1248 }
1249
1250 37267 static int decode_block(AVCodecContext *avctx, void *tdata,
1251 int jobnr, int threadnr)
1252 {
1253 37267 const EXRContext *s = avctx->priv_data;
1254 37267 AVFrame *const p = s->picture;
1255 37267 EXRThreadData *td = &s->thread_data[threadnr];
1256 37267 const uint8_t *channel_buffer[4] = { 0 };
1257 37267 const uint8_t *buf = s->buf;
1258 uint64_t line_offset, uncompressed_size;
1259 uint8_t *ptr;
1260 uint32_t data_size;
1261 37267 int line, col = 0;
1262 uint64_t tile_x, tile_y, tile_level_x, tile_level_y;
1263 const uint8_t *src;
1264 37267 int step = s->desc->comp[0].step;
1265 37267 int bxmin = 0, axmax = 0, window_xoffset = 0;
1266 int window_xmin, window_xmax, window_ymin, window_ymax;
1267 int data_xoffset, data_yoffset, data_window_offset, xsize, ysize;
1268 37267 int i, x, buf_size = s->buf_size;
1269 int c, rgb_channel_count;
1270 #if FF_API_EXR_GAMMA
1271 37267 float one_gamma = 1.0f / s->gamma;
1272 37267 av_csp_trc_function trc_func = av_csp_trc_func_from_id(s->apply_trc_type);
1273 #endif
1274 int ret;
1275
1276 37267 line_offset = AV_RL64(s->gb.buffer + jobnr * 8);
1277
1278
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 37267 if (s->is_tile) {
1279
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 104 if (buf_size < 20 || line_offset > buf_size - 20)
1280 ✗ return AVERROR_INVALIDDATA;
1281
1282 104 src = buf + line_offset + 20;
1283
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 104 if (s->is_multipart)
1284 ✗ src += 4;
1285
1286 104 tile_x = AV_RL32(src - 20);
1287 104 tile_y = AV_RL32(src - 16);
1288 104 tile_level_x = AV_RL32(src - 12);
1289 104 tile_level_y = AV_RL32(src - 8);
1290
1291 104 data_size = AV_RL32(src - 4);
1292
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 104 if (data_size <= 0 || data_size > buf_size - line_offset - 20)
1293 ✗ return AVERROR_INVALIDDATA;
1294
1295
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 104 if (tile_level_x || tile_level_y) { /* tile level, is not the full res level */
1296 ✗ avpriv_report_missing_feature(s->avctx, "Subres tile before full res tile");
1297 ✗ return AVERROR_PATCHWELCOME;
1298 }
1299
1300
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 104 if (tile_x && s->tile_attr.xSize + (int64_t)FFMAX(s->xmin, 0) >= INT_MAX / tile_x )
1301 ✗ return AVERROR_INVALIDDATA;
1302
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 104 if (tile_y && s->tile_attr.ySize + (int64_t)FFMAX(s->ymin, 0) >= INT_MAX / tile_y )
1303 ✗ return AVERROR_INVALIDDATA;
1304
1305 104 line = s->ymin + s->tile_attr.ySize * tile_y;
1306 104 col = s->tile_attr.xSize * tile_x;
1307
1308
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 104 if (line < s->ymin || line > s->ymax ||
1309
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 104 s->xmin + col < s->xmin || s->xmin + col > s->xmax)
1310 ✗ return AVERROR_INVALIDDATA;
1311
1312 104 td->ysize = FFMIN(s->tile_attr.ySize, s->ydelta - tile_y * s->tile_attr.ySize);
1313 104 td->xsize = FFMIN(s->tile_attr.xSize, s->xdelta - tile_x * s->tile_attr.xSize);
1314
1315
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 208 if (td->xsize * (uint64_t)s->current_channel_offset > INT_MAX ||
1316 104 av_image_check_size2(td->xsize, td->ysize, s->avctx->max_pixels, AV_PIX_FMT_NONE, 0, s->avctx) < 0)
1317 ✗ return AVERROR_INVALIDDATA;
1318
1319 104 td->channel_line_size = td->xsize * s->current_channel_offset;/* uncompress size of one line */
1320 104 uncompressed_size = td->channel_line_size * (uint64_t)td->ysize;/* uncompress size of the block */
1321 } else {
1322
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 37163 if (buf_size < 8 || line_offset > buf_size - 8)
1323 ✗ return AVERROR_INVALIDDATA;
1324
1325 37163 src = buf + line_offset + 8;
1326
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 37163 if (s->is_multipart)
1327 ✗ src += 4;
1328 37163 line = AV_RL32(src - 8);
1329
1330
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 37163 if (line < s->ymin || line > s->ymax)
1331 ✗ return AVERROR_INVALIDDATA;
1332
1333 37163 data_size = AV_RL32(src - 4);
1334
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 37163 if (data_size <= 0 || data_size > buf_size - line_offset - 8)
1335 ✗ return AVERROR_INVALIDDATA;
1336
1337 37163 td->ysize = FFMIN(s->scan_lines_per_block, s->ymax - line + 1); /* s->ydelta - line ?? */
1338 37163 td->xsize = s->xdelta;
1339
1340
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 74326 if (td->xsize * (uint64_t)s->current_channel_offset > INT_MAX ||
1341 37163 av_image_check_size2(td->xsize, td->ysize, s->avctx->max_pixels, AV_PIX_FMT_NONE, 0, s->avctx) < 0)
1342 ✗ return AVERROR_INVALIDDATA;
1343
1344 37163 td->channel_line_size = td->xsize * s->current_channel_offset;/* uncompress size of one line */
1345 37163 uncompressed_size = td->channel_line_size * (uint64_t)td->ysize;/* uncompress size of the block */
1346
1347
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 37163 if ((s->compression == EXR_RAW && (data_size != uncompressed_size ||
1348
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 11927 line_offset > buf_size - uncompressed_size)) ||
1349
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 37163 (s->compression != EXR_RAW && (data_size > uncompressed_size ||
1350
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 25236 line_offset > buf_size - data_size))) {
1351 ✗ return AVERROR_INVALIDDATA;
1352 }
1353 }
1354
1355 37267 window_xmin = FFMIN(avctx->width, FFMAX(0, s->xmin + col));
1356 37267 window_xmax = FFMIN(avctx->width, FFMAX(0, s->xmin + col + td->xsize));
1357 37267 window_ymin = FFMIN(avctx->height, FFMAX(0, line ));
1358 37267 window_ymax = FFMIN(avctx->height, FFMAX(0, line + td->ysize));
1359 37267 xsize = window_xmax - window_xmin;
1360 37267 ysize = window_ymax - window_ymin;
1361
1362 /* tile or scanline not visible skip decoding */
1363
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 37267 if (xsize <= 0 || ysize <= 0)
1364 433 return 0;
1365
1366 /* is the first tile or is a scanline */
1367
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 36834 if(col == 0) {
1368 36794 window_xmin = 0;
1369 /* pixels to add at the left of the display window */
1370 36794 window_xoffset = FFMAX(0, s->xmin);
1371 /* bytes to add at the left of the display window */
1372 36794 bxmin = window_xoffset * step;
1373 }
1374
1375 /* is the last tile or is a scanline */
1376
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 36834 if(col + td->xsize == s->xdelta) {
1377 36794 window_xmax = avctx->width;
1378 /* bytes to add at the right of the display window */
1379 36794 axmax = FFMAX(0, (avctx->width - (s->xmax + 1))) * step;
1380 }
1381
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 36834 if (avctx->max_pixels && uncompressed_size > avctx->max_pixels * 16LL)
1383 ✗ return AVERROR_INVALIDDATA;
1384
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 36834 if (data_size < uncompressed_size || s->is_tile) { /* td->tmp is use for tile reorganization */
1386 17828 av_fast_padded_malloc(&td->tmp, &td->tmp_size, uncompressed_size);
1387
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 17828 if (!td->tmp)
1388 ✗ return AVERROR(ENOMEM);
1389 }
1390
1391
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 36834 if (data_size < uncompressed_size) {
1392 17815 av_fast_padded_malloc(&td->uncompressed_data,
1393 17815 &td->uncompressed_size, uncompressed_size + 64);/* Force 64 padding for AVX2 reorder_pixels dst */
1394
1395
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 17815 if (!td->uncompressed_data)
1396 ✗ return AVERROR(ENOMEM);
1397
1398 17815 ret = AVERROR_INVALIDDATA;
1399
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 17815 switch (s->compression) {
1400 12853 case EXR_ZIP1:
1401 case EXR_ZIP16:
1402 12853 ret = zip_uncompress(s, src, data_size, uncompressed_size, td);
1403 12853 break;
1404 30 case EXR_PIZ:
1405 30 ret = piz_uncompress(s, src, data_size, uncompressed_size, td);
1406 30 break;
1407 61 case EXR_PXR24:
1408 61 ret = pxr24_uncompress(s, src, data_size, uncompressed_size, td);
1409 61 break;
1410 4848 case EXR_RLE:
1411 4848 ret = rle_uncompress(s, src, data_size, uncompressed_size, td);
1412 4848 break;
1413 23 case EXR_B44:
1414 case EXR_B44A:
1415 23 ret = b44_uncompress(s, src, data_size, uncompressed_size, td);
1416 23 break;
1417 ✗ case EXR_DWAA:
1418 case EXR_DWAB:
1419 ✗ ret = dwa_uncompress(s, src, data_size, uncompressed_size, td);
1420 ✗ break;
1421 }
1422
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 17815 if (ret < 0) {
1423 ✗ av_log(avctx, AV_LOG_ERROR, "decode_block() failed.\n");
1424 ✗ return ret;
1425 }
1426 17815 src = td->uncompressed_data;
1427 }
1428
1429 /* offsets to crop data outside display window */
1430
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 36834 data_xoffset = FFABS(FFMIN(0, s->xmin + col)) * (s->pixel_type == EXR_HALF ? 2 : 4);
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✓ Branch 1 taken 6 times.
 36834 data_yoffset = FFABS(FFMIN(0, line));
1432 36834 data_window_offset = (data_yoffset * td->channel_line_size) + data_xoffset;
1433
1434
2/2
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 36834 if (s->channel_offsets[3] >= 0)
1435 13595 channel_buffer[3] = src + (td->xsize * s->channel_offsets[3]) + data_window_offset;
1436
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 36834 if (!s->is_luma) {
1437 25358 channel_buffer[0] = src + (td->xsize * s->channel_offsets[0]) + data_window_offset;
1438 25358 channel_buffer[1] = src + (td->xsize * s->channel_offsets[1]) + data_window_offset;
1439 25358 channel_buffer[2] = src + (td->xsize * s->channel_offsets[2]) + data_window_offset;
1440 25358 rgb_channel_count = 3;
1441 } else { /* put y data in the first channel_buffer and if needed, alpha in the second */
1442 11476 channel_buffer[0] = src + (td->xsize * s->channel_offsets[1]) + data_window_offset;
1443
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 11476 if (!(s->desc->flags & AV_PIX_FMT_FLAG_PLANAR))
1444 11476 channel_buffer[1] = channel_buffer[3];
1445 11476 rgb_channel_count = 1;
1446 }
1447
1448
2/2
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 36834 if (s->desc->flags & AV_PIX_FMT_FLAG_FLOAT) {
1449
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 137939 for (c = 0; c < s->desc->nb_components; c++) {
1450 101115 int plane = s->desc->comp[c].plane;
1451 101115 ptr = p->data[plane] + window_ymin * p->linesize[plane] + (window_xmin * step) + s->desc->comp[c].offset;
1452
1453
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 247623 for (i = 0; i < ysize; i++, ptr += p->linesize[plane]) {
1454 146508 const uint8_t *src = channel_buffer[c];
1455 146508 uint8_t *ptr_x = ptr + window_xoffset * step;
1456
1457 // Zero out the start if xmin is not 0
1458
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 146508 if (s->desc->flags & AV_PIX_FMT_FLAG_PLANAR || !c)
1459 146500 memset(ptr, 0, bxmin);
1460
1461
2/2
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 146508 if (s->pixel_type == EXR_FLOAT) {
1462 // 32-bit
1463 #if FF_API_EXR_GAMMA
1464
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 121876 if (trc_func && (!c || (c < 3 && s->desc->flags & AV_PIX_FMT_FLAG_PLANAR))) {
1465 ✗ for (int x = 0; x < xsize; x++, ptr_x += step) {
1466 ✗ float f = av_int2float(bytestream_get_le32(&src));
1467 ✗ AV_WN32A(ptr_x, av_float2int(trc_func(f)));
1468 }
1469
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 121876 } else if (one_gamma != 1.f) {
1470 ✗ for (int x = 0; x < xsize; x++, ptr_x += step) {
1471 ✗ float f = av_int2float(bytestream_get_le32(&src));
1472 ✗ if (f > 0.0f && c < 3) /* avoid negative values */
1473 ✗ f = powf(f, one_gamma);
1474 ✗ AV_WN32A(ptr_x, av_float2int(f));
1475 }
1476 } else
1477 #endif
1478
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 42372700 for (int x = 0; x < xsize; x++, ptr_x += step)
1479 42250824 AV_WN32A(ptr_x, bytestream_get_le32(&src));
1480
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 24632 } else if (s->pixel_type == EXR_HALF) {
1481 // 16-bit
1482 #if FF_API_EXR_GAMMA
1483
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 24632 if (one_gamma != 1.f || (trc_func && (!c || (c < 3 && s->desc->flags & AV_PIX_FMT_FLAG_PLANAR)))) {
1484 ✗ for (int x = 0; x < xsize; x++, ptr_x += step)
1485 ✗ AV_WN16A(ptr_x, s->gamma_table[bytestream_get_le16(&src)]);
1486 } else
1487 #endif
1488
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 10538537 for (int x = 0; x < xsize; x++, ptr_x += step)
1489 10513905 AV_WN16A(ptr_x, bytestream_get_le16(&src));
1490 }
1491
1492 // Zero out the end if xmax+1 is not w
1493
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✓ Branch 3 taken 8 times.
 146508 if (s->desc->flags & AV_PIX_FMT_FLAG_PLANAR || !c)
1494 146500 memset(ptr_x, 0, axmax);
1495 146508 channel_buffer[c] += td->channel_line_size;
1496 }
1497 }
1498 } else {
1499
1500 av_assert1(s->pixel_type == EXR_UINT);
1501 10 ptr = p->data[0] + window_ymin * p->linesize[0] + (window_xmin * s->desc->nb_components * 2);
1502
1503
2/2
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 185 for (i = 0; i < ysize; i++, ptr += p->linesize[0]) {
1504
1505 const uint8_t * a;
1506 const uint8_t *rgb[3];
1507 uint16_t *ptr_x;
1508
1509
2/2
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 700 for (c = 0; c < rgb_channel_count; c++) {
1510 525 rgb[c] = channel_buffer[c];
1511 }
1512
1513
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✓ Branch 1 taken 175 times.
 175 if (channel_buffer[3])
1514 ✗ a = channel_buffer[3];
1515
1516 175 ptr_x = (uint16_t *) ptr;
1517
1518 // Zero out the start if xmin is not 0
1519 175 memset(ptr_x, 0, bxmin);
1520 175 ptr_x += window_xoffset * s->desc->nb_components;
1521
1522
2/2
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 5484 for (x = 0; x < xsize; x++) {
1523
2/2
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 21236 for (c = 0; c < rgb_channel_count; c++) {
1524 15927 *ptr_x++ = bytestream_get_le32(&rgb[c]) >> 16;
1525 }
1526
1527
1/2
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✓ Branch 1 taken 5309 times.
 5309 if (channel_buffer[3])
1528 ✗ *ptr_x++ = bytestream_get_le32(&a) >> 16;
1529 }
1530
1531 // Zero out the end if xmax+1 is not w
1532 175 memset(ptr_x, 0, axmax);
1533
1534 175 channel_buffer[0] += td->channel_line_size;
1535 175 channel_buffer[1] += td->channel_line_size;
1536 175 channel_buffer[2] += td->channel_line_size;
1537
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✓ Branch 1 taken 175 times.
 175 if (channel_buffer[3])
1538 ✗ channel_buffer[3] += td->channel_line_size;
1539 }
1540 }
1541
1542 36834 return 0;
1543 }
1544
1545 ✗ static void skip_header_chunk(EXRContext *s)
1546 {
1547 ✗ GetByteContext *gb = &s->gb;
1548
1549 ✗ while (bytestream2_get_bytes_left(gb) > 0) {
1550 ✗ if (!bytestream2_peek_byte(gb))
1551 ✗ break;
1552
1553 // Process unknown variables
1554 ✗ for (int i = 0; i < 2; i++) // value_name and value_type
1555 ✗ while (bytestream2_get_byte(gb) != 0);
1556
1557 // Skip variable length
1558 ✗ bytestream2_skip(gb, bytestream2_get_le32(gb));
1559 }
1560 ✗ }
1561
1562 /**
1563 * Check if the variable name corresponds to its data type.
1564 *
1565 * @param s the EXRContext
1566 * @param value_name name of the variable to check
1567 * @param value_type type of the variable to check
1568 * @param minimum_length minimum length of the variable data
1569 *
1570 * @return bytes to read containing variable data
1571 * -1 if variable is not found
1572 * 0 if buffer ended prematurely
1573 */
1574 32478 static int check_header_variable(EXRContext *s,
1575 const char *value_name,
1576 const char *value_type,
1577 unsigned int minimum_length)
1578 {
1579 32478 GetByteContext *gb = &s->gb;
1580 32478 int var_size = -1;
1581
1582
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✗ Branch 2 not taken.
 32478 if (bytestream2_get_bytes_left(gb) >= minimum_length &&
1583
2/2
✓ Branch 0 taken 2166 times.
✓ Branch 1 taken 30312 times.
 32478 !strcmp(gb->buffer, value_name)) {
1584 // found value_name, jump to value_type (null terminated strings)
1585 2166 gb->buffer += strlen(value_name) + 1;
1586
1/2
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✗ Branch 1 not taken.
 2166 if (!strcmp(gb->buffer, value_type)) {
1587 2166 gb->buffer += strlen(value_type) + 1;
1588 2166 var_size = bytestream2_get_le32(gb);
1589 // don't go read past boundaries
1590
1/2
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✓ Branch 2 taken 2166 times.
 2166 if (var_size > bytestream2_get_bytes_left(gb))
1591 ✗ var_size = 0;
1592 } else {
1593 // value_type not found, reset the buffer
1594 ✗ gb->buffer -= strlen(value_name) + 1;
1595 ✗ av_log(s->avctx, AV_LOG_WARNING,
1596 "Unknown data type %s for header variable %s.\n",
1597 value_type, value_name);
1598 }
1599 }
1600
1601 32478 return var_size;
1602 }
1603
1604 316 static int decode_header(EXRContext *s, AVFrame *frame)
1605 {
1606 316 AVDictionary *metadata = NULL;
1607 316 GetByteContext *gb = &s->gb;
1608 int magic_number, version, flags;
1609 316 int layer_match = 0;
1610 int ret;
1611 316 int dup_channels = 0;
1612
1613 316 s->current_channel_offset = 0;
1614 316 s->xmin = ~0;
1615 316 s->xmax = ~0;
1616 316 s->ymin = ~0;
1617 316 s->ymax = ~0;
1618 316 s->xdelta = ~0;
1619 316 s->ydelta = ~0;
1620 316 s->channel_offsets[0] = -1;
1621 316 s->channel_offsets[1] = -1;
1622 316 s->channel_offsets[2] = -1;
1623 316 s->channel_offsets[3] = -1;
1624 316 s->pixel_type = EXR_UNKNOWN;
1625 316 s->compression = EXR_UNKN;
1626 316 s->nb_channels = 0;
1627 316 s->w = 0;
1628 316 s->h = 0;
1629 316 s->tile_attr.xSize = -1;
1630 316 s->tile_attr.ySize = -1;
1631 316 s->is_tile = 0;
1632 316 s->is_multipart = 0;
1633 316 s->is_luma = 0;
1634 316 s->has_channel = 0;
1635 316 s->current_part = 0;
1636
1637
1/2
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✓ Branch 2 taken 316 times.
 316 if (bytestream2_get_bytes_left(gb) < 10) {
1638 ✗ av_log(s->avctx, AV_LOG_ERROR, "Header too short to parse.\n");
1639 ✗ return AVERROR_INVALIDDATA;
1640 }
1641
1642 316 magic_number = bytestream2_get_le32(gb);
1643
1/2
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 316 if (magic_number != 20000630) {
1644 /* As per documentation of OpenEXR, it is supposed to be
1645 * int 20000630 little-endian */
1646 ✗ av_log(s->avctx, AV_LOG_ERROR, "Wrong magic number %d.\n", magic_number);
1647 ✗ return AVERROR_INVALIDDATA;
1648 }
1649
1650 316 version = bytestream2_get_byte(gb);
1651
1/2
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 316 if (version != 2) {
1652 ✗ avpriv_report_missing_feature(s->avctx, "Version %d", version);
1653 ✗ return AVERROR_PATCHWELCOME;
1654 }
1655
1656 316 flags = bytestream2_get_le24(gb);
1657
1658
2/2
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 316 if (flags & 0x02)
1659 44 s->is_tile = 1;
1660
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 316 if (flags & 0x10)
1661 ✗ s->is_multipart = 1;
1662
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 316 if (flags & 0x08) {
1663 ✗ avpriv_report_missing_feature(s->avctx, "deep data");
1664 ✗ return AVERROR_PATCHWELCOME;
1665 }
1666
1667 // Parse the header
1668
1/2
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 4396 while (bytestream2_get_bytes_left(gb) > 0) {
1669 int var_size;
1670
1671
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 4396 while (s->is_multipart && s->current_part < s->selected_part &&
1672 ✗ bytestream2_get_bytes_left(gb) > 0) {
1673 ✗ if (bytestream2_peek_byte(gb)) {
1674 ✗ skip_header_chunk(s);
1675 } else {
1676 ✗ bytestream2_skip(gb, 1);
1677 ✗ if (!bytestream2_peek_byte(gb))
1678 ✗ break;
1679 }
1680 ✗ bytestream2_skip(gb, 1);
1681 ✗ s->current_part++;
1682 }
1683
1684
2/2
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✓ Branch 2 taken 4080 times.
 4396 if (!bytestream2_peek_byte(gb)) {
1685
1/2
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✗ Branch 1 not taken.
 316 if (!s->is_multipart)
1686 316 break;
1687 ✗ bytestream2_skip(gb, 1);
1688 ✗ if (s->current_part == s->selected_part) {
1689 ✗ while (bytestream2_get_bytes_left(gb) > 0) {
1690 ✗ if (bytestream2_peek_byte(gb)) {
1691 ✗ skip_header_chunk(s);
1692 } else {
1693 ✗ bytestream2_skip(gb, 1);
1694 ✗ if (!bytestream2_peek_byte(gb))
1695 ✗ break;
1696 }
1697 }
1698 }
1699 ✗ if (!bytestream2_peek_byte(gb))
1700 ✗ break;
1701 ✗ s->current_part++;
1702 }
1703
1704
2/2
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✓ Branch 2 taken 3764 times.
 4080 if ((var_size = check_header_variable(s, "channels",
1705 316 "chlist", 38)) >= 0) {
1706 GetByteContext ch_gb;
1707
1/2
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✓ Branch 1 taken 316 times.
 316 if (!var_size) {
1708 ✗ ret = AVERROR_INVALIDDATA;
1709 ✗ goto fail;
1710 }
1711
1712 316 bytestream2_init(&ch_gb, gb->buffer, var_size);
1713
1714
2/2
✓ Branch 1 taken 1212 times.
✓ Branch 2 taken 316 times.
 1528 while (bytestream2_get_bytes_left(&ch_gb) >= 19) {
1715 EXRChannel *channel;
1716 enum ExrPixelType current_pixel_type;
1717 1212 int channel_index = -1;
1718 int xsub, ysub;
1719
1720
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 1212 if (strcmp(s->layer, "") != 0) {
1721
2/2
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 272 if (strncmp(ch_gb.buffer, s->layer, strlen(s->layer)) == 0) {
1722 150 layer_match = 1;
1723 150 av_log(s->avctx, AV_LOG_INFO,
1724 "Channel match layer : %s.\n", ch_gb.buffer);
1725 150 ch_gb.buffer += strlen(s->layer);
1726
1/2
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✗ Branch 1 not taken.
 150 if (*ch_gb.buffer == '.')
1727 150 ch_gb.buffer++; /* skip dot if not given */
1728 } else {
1729 122 layer_match = 0;
1730 122 av_log(s->avctx, AV_LOG_INFO,
1731 "Channel doesn't match layer : %s.\n", ch_gb.buffer);
1732 }
1733 } else {
1734 940 layer_match = 1;
1735 }
1736
1737
2/2
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✓ Branch 1 taken 122 times.
 1212 if (layer_match) { /* only search channel if the layer match is valid */
1738
2/2
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✓ Branch 1 taken 152 times.
 1090 if (strlen(ch_gb.buffer) == 1) {
1739 938 int ch_chr = av_toupper(*ch_gb.buffer);
1740
2/4
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 938 if (ch_chr >= 'A' && ch_chr <= 'Z')
1741 938 s->has_channel |= M(ch_chr);
1742 938 av_log(s->avctx, AV_LOG_DEBUG, "%c\n", ch_chr);
1743 }
1744
1745
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 1926 if (!av_strcasecmp(ch_gb.buffer, "R") ||
1746
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 1672 !av_strcasecmp(ch_gb.buffer, "X") ||
1747 836 !av_strcasecmp(ch_gb.buffer, "U")) {
1748 254 channel_index = 0;
1749
3/4
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✓ Branch 4 taken 582 times.
 1418 } else if (!av_strcasecmp(ch_gb.buffer, "G") ||
1750 582 !av_strcasecmp(ch_gb.buffer, "V")) {
1751 254 channel_index = 1;
1752
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 582 } else if (!av_strcasecmp(ch_gb.buffer, "Y")) {
1753 62 channel_index = 1;
1754
3/4
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✓ Branch 3 taken 266 times.
✗ Branch 4 not taken.
 786 } else if (!av_strcasecmp(ch_gb.buffer, "B") ||
1755
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 532 !av_strcasecmp(ch_gb.buffer, "Z") ||
1756 266 !av_strcasecmp(ch_gb.buffer, "W")) {
1757 254 channel_index = 2;
1758
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 266 } else if (!av_strcasecmp(ch_gb.buffer, "A")) {
1759 114 channel_index = 3;
1760 } else {
1761 152 av_log(s->avctx, AV_LOG_WARNING,
1762 "Unsupported channel %.256s.\n", ch_gb.buffer);
1763 }
1764 }
1765
1766 /* skip until you get a 0 */
1767
3/4
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✓ Branch 3 taken 3644 times.
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 9712 while (bytestream2_get_bytes_left(&ch_gb) > 0 &&
1768 4856 bytestream2_get_byte(&ch_gb))
1769 3644 continue;
1770
1771
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 1212 if (bytestream2_get_bytes_left(&ch_gb) < 4) {
1772 ✗ av_log(s->avctx, AV_LOG_ERROR, "Incomplete header.\n");
1773 ✗ ret = AVERROR_INVALIDDATA;
1774 ✗ goto fail;
1775 }
1776
1777 1212 current_pixel_type = bytestream2_get_le32(&ch_gb);
1778
1/2
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✓ Branch 1 taken 1212 times.
 1212 if (current_pixel_type >= EXR_UNKNOWN) {
1779 ✗ avpriv_report_missing_feature(s->avctx, "Pixel type %d",
1780 current_pixel_type);
1781 ✗ ret = AVERROR_PATCHWELCOME;
1782 ✗ goto fail;
1783 }
1784
1785 1212 bytestream2_skip(&ch_gb, 4);
1786 1212 xsub = bytestream2_get_le32(&ch_gb);
1787 1212 ysub = bytestream2_get_le32(&ch_gb);
1788
1789
2/4
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✓ Branch 3 taken 1212 times.
 1212 if (xsub != 1 || ysub != 1) {
1790 ✗ avpriv_report_missing_feature(s->avctx,
1791 "Subsampling %dx%d",
1792 xsub, ysub);
1793 ✗ ret = AVERROR_PATCHWELCOME;
1794 ✗ goto fail;
1795 }
1796
1797
3/4
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✓ 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 */
1798
2/2
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✓ Branch 1 taken 316 times.
 938 if (s->pixel_type != EXR_UNKNOWN &&
1799
1/2
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 622 s->pixel_type != current_pixel_type) {
1800 ✗ av_log(s->avctx, AV_LOG_ERROR,
1801 "RGB channels not of the same depth.\n");
1802 ✗ ret = AVERROR_INVALIDDATA;
1803 ✗ goto fail;
1804 }
1805 938 s->pixel_type = current_pixel_type;
1806 938 s->channel_offsets[channel_index] = s->current_channel_offset;
1807
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 274 } else if (channel_index >= 0) {
1808 ✗ av_log(s->avctx, AV_LOG_WARNING,
1809 "Multiple channels with index %d.\n", channel_index);
1810 ✗ if (++dup_channels > 10) {
1811 ✗ ret = AVERROR_INVALIDDATA;
1812 ✗ goto fail;
1813 }
1814 }
1815
1816
1/2
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✓ Branch 1 taken 1212 times.
 1212 av_assert0(s->nb_channels < INT_MAX); // Impossible due to size of the bitstream
1817 1212 EXRChannel *new_channels = av_realloc_array(s->channels,
1818 1212 s->nb_channels + 1,
1819 sizeof(EXRChannel));
1820
1/2
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✓ Branch 1 taken 1212 times.
 1212 if (!new_channels) {
1821 ✗ ret = AVERROR(ENOMEM);
1822 ✗ goto fail;
1823 }
1824 1212 s->nb_channels ++;
1825 1212 s->channels = new_channels;
1826
1827 1212 channel = &s->channels[s->nb_channels - 1];
1828 1212 channel->pixel_type = current_pixel_type;
1829 1212 channel->xsub = xsub;
1830 1212 channel->ysub = ysub;
1831
1832
2/2
✓ Branch 0 taken 404 times.
✓ Branch 1 taken 808 times.
 1212 if (current_pixel_type == EXR_HALF) {
1833 404 s->current_channel_offset += 2;
1834 } else {/* Float or UINT32 */
1835 808 s->current_channel_offset += 4;
1836 }
1837 }
1838
2/2
✓ Branch 0 taken 254 times.
✓ Branch 1 taken 62 times.
 316 if (!((M('R') + M('G') + M('B')) & ~s->has_channel)) {
1839 254 s->is_luma = 0;
1840
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 62 times.
 62 } else if (!((M('X') + M('Y') + M('Z')) & ~s->has_channel)) {
1841 ✗ s->is_luma = 0;
1842
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 62 times.
 62 } else if (!((M('Y') + M('U') + M('V')) & ~s->has_channel)) {
1843 ✗ s->is_luma = 0;
1844
1/2
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✗ Branch 1 not taken.
 62 } else if (!((M('Y') ) & ~s->has_channel) &&
1845
1/2
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✗ Branch 1 not taken.
 62 !((M('R') + M('G') + M('B') + M('U') + M('V') + M('X') + M('Z')) & s->has_channel)) {
1846 62 s->is_luma = 1;
1847 } else {
1848 ✗ avpriv_request_sample(s->avctx, "Uncommon channel combination");
1849 ✗ ret = AVERROR_PATCHWELCOME;
1850 ✗ goto fail;
1851 }
1852
1853 /* Check if all channels are set with an offset or if the channels
1854 * are causing an overflow */
1855
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 */
1856
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 254 times.
 254 if (FFMIN3(s->channel_offsets[0],
1857 s->channel_offsets[1],
1858 s->channel_offsets[2]) < 0) {
1859 ✗ if (s->channel_offsets[0] < 0)
1860 ✗ av_log(s->avctx, AV_LOG_ERROR, "Missing red channel.\n");
1861 ✗ if (s->channel_offsets[1] < 0)
1862 ✗ av_log(s->avctx, AV_LOG_ERROR, "Missing green channel.\n");
1863 ✗ if (s->channel_offsets[2] < 0)
1864 ✗ av_log(s->avctx, AV_LOG_ERROR, "Missing blue channel.\n");
1865 ✗ ret = AVERROR_INVALIDDATA;
1866 ✗ goto fail;
1867 }
1868 }
1869
1870 // skip one last byte and update main gb
1871 316 gb->buffer = ch_gb.buffer + 1;
1872 316 continue;
1873
2/2
✓ Branch 1 taken 316 times.
✓ Branch 2 taken 3448 times.
 3764 } else if ((var_size = check_header_variable(s, "dataWindow", "box2i",
1874 316 31)) >= 0) {
1875 int xmin, ymin, xmax, ymax;
1876
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 316 times.
 316 if (!var_size) {
1877 ✗ ret = AVERROR_INVALIDDATA;
1878 ✗ goto fail;
1879 }
1880
1881 316 xmin = bytestream2_get_le32(gb);
1882 316 ymin = bytestream2_get_le32(gb);
1883 316 xmax = bytestream2_get_le32(gb);
1884 316 ymax = bytestream2_get_le32(gb);
1885
1886
3/6
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✗ Branch 3 not taken.
✓ Branch 4 taken 316 times.
✗ Branch 5 not taken.
 316 if (xmin > xmax || ymin > ymax ||
1887
1/2
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✗ Branch 1 not taken.
 316 ymax == INT_MAX || xmax == INT_MAX ||
1888
1/2
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✗ Branch 1 not taken.
 316 (unsigned)xmax - xmin >= INT_MAX ||
1889
1/2
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✓ Branch 1 taken 316 times.
 316 (unsigned)ymax - ymin >= INT_MAX) {
1890 ✗ ret = AVERROR_INVALIDDATA;
1891 ✗ goto fail;
1892 }
1893 316 s->xmin = xmin;
1894 316 s->xmax = xmax;
1895 316 s->ymin = ymin;
1896 316 s->ymax = ymax;
1897 316 s->xdelta = (s->xmax - s->xmin) + 1;
1898 316 s->ydelta = (s->ymax - s->ymin) + 1;
1899
1900 316 continue;
1901
2/2
✓ Branch 1 taken 316 times.
✓ Branch 2 taken 3132 times.
 3448 } else if ((var_size = check_header_variable(s, "displayWindow",
1902 316 "box2i", 34)) >= 0) {
1903 int32_t sx, sy, dx, dy;
1904
1905
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 316 times.
 316 if (!var_size) {
1906 ✗ ret = AVERROR_INVALIDDATA;
1907 ✗ goto fail;
1908 }
1909
1910 316 sx = bytestream2_get_le32(gb);
1911 316 sy = bytestream2_get_le32(gb);
1912 316 dx = bytestream2_get_le32(gb);
1913 316 dy = bytestream2_get_le32(gb);
1914
1915 316 s->w = (unsigned)dx - sx + 1;
1916 316 s->h = (unsigned)dy - sy + 1;
1917
1918 316 continue;
1919
2/2
✓ Branch 1 taken 316 times.
✓ Branch 2 taken 2816 times.
 3132 } else if ((var_size = check_header_variable(s, "lineOrder",
1920 316 "lineOrder", 25)) >= 0) {
1921 int line_order;
1922
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 316 times.
 316 if (!var_size) {
1923 ✗ ret = AVERROR_INVALIDDATA;
1924 ✗ goto fail;
1925 }
1926
1927 316 line_order = bytestream2_get_byte(gb);
1928 316 av_log(s->avctx, AV_LOG_DEBUG, "line order: %d.\n", line_order);
1929
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 316 times.
 316 if (line_order > 2) {
1930 ✗ av_log(s->avctx, AV_LOG_ERROR, "Unknown line order.\n");
1931 ✗ ret = AVERROR_INVALIDDATA;
1932 ✗ goto fail;
1933 }
1934
1935 316 continue;
1936
2/2
✓ Branch 1 taken 148 times.
✓ Branch 2 taken 2668 times.
 2816 } else if ((var_size = check_header_variable(s, "pixelAspectRatio",
1937 "float", 31)) >= 0) {
1938
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 148 times.
 148 if (!var_size) {
1939 ✗ ret = AVERROR_INVALIDDATA;
1940 ✗ goto fail;
1941 }
1942
1943 148 s->sar = bytestream2_get_le32(gb);
1944
1945 148 continue;
1946
2/2
✓ Branch 1 taken 316 times.
✓ Branch 2 taken 2352 times.
 2668 } else if ((var_size = check_header_variable(s, "compression",
1947 "compression", 29)) >= 0) {
1948
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 316 times.
 316 if (!var_size) {
1949 ✗ ret = AVERROR_INVALIDDATA;
1950 ✗ goto fail;
1951 }
1952
1953
1/2
✓ Branch 0 taken 316 times.
✗ Branch 1 not taken.
 316 if (s->compression == EXR_UNKN)
1954 316 s->compression = bytestream2_get_byte(gb);
1955 else {
1956 ✗ bytestream2_skip(gb, 1);
1957 ✗ av_log(s->avctx, AV_LOG_WARNING,
1958 "Found more than one compression attribute.\n");
1959 }
1960
1961 316 continue;
1962
2/2
✓ Branch 1 taken 44 times.
✓ Branch 2 taken 2308 times.
 2352 } else if ((var_size = check_header_variable(s, "tiles",
1963 44 "tiledesc", 22)) >= 0) {
1964 uint8_t tileLevel;
1965
1966
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 44 times.
 44 if (!s->is_tile)
1967 ✗ av_log(s->avctx, AV_LOG_WARNING,
1968 "Found tile attribute and scanline flags. Exr will be interpreted as scanline.\n");
1969
1970 44 s->tile_attr.xSize = bytestream2_get_le32(gb);
1971 44 s->tile_attr.ySize = bytestream2_get_le32(gb);
1972
1973 44 tileLevel = bytestream2_get_byte(gb);
1974 44 s->tile_attr.level_mode = tileLevel & 0x0f;
1975 44 s->tile_attr.level_round = (tileLevel >> 4) & 0x0f;
1976
1977
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 44 times.
 44 if (s->tile_attr.level_mode >= EXR_TILE_LEVEL_UNKNOWN) {
1978 ✗ avpriv_report_missing_feature(s->avctx, "Tile level mode %d",
1979 ✗ s->tile_attr.level_mode);
1980 ✗ ret = AVERROR_PATCHWELCOME;
1981 ✗ goto fail;
1982 }
1983
1984
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 44 times.
 44 if (s->tile_attr.level_round >= EXR_TILE_ROUND_UNKNOWN) {
1985 ✗ avpriv_report_missing_feature(s->avctx, "Tile level round %d",
1986 ✗ s->tile_attr.level_round);
1987 ✗ ret = AVERROR_PATCHWELCOME;
1988 ✗ goto fail;
1989 }
1990
1991 44 continue;
1992
2/2
✓ Branch 1 taken 184 times.
✓ Branch 2 taken 2124 times.
 2308 } else if ((var_size = check_header_variable(s, "writer",
1993 184 "string", 1)) >= 0) {
1994 184 uint8_t key[256] = { 0 };
1995
1996 184 bytestream2_get_buffer(gb, key, FFMIN(sizeof(key) - 1, var_size));
1997 184 av_dict_set(&metadata, "writer", key, 0);
1998
1999 184 continue;
2000
2/2
✓ Branch 1 taken 184 times.
✓ Branch 2 taken 1940 times.
 2124 } else if ((var_size = check_header_variable(s, "framesPerSecond",
2001 "rational", 33)) >= 0) {
2002
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 184 times.
 184 if (!var_size) {
2003 ✗ ret = AVERROR_INVALIDDATA;
2004 ✗ goto fail;
2005 }
2006
2007 184 s->avctx->framerate.num = bytestream2_get_le32(gb);
2008 184 s->avctx->framerate.den = bytestream2_get_le32(gb);
2009
2010 184 continue;
2011
2/2
✓ Branch 1 taken 8 times.
✓ Branch 2 taken 1932 times.
 1940 } else if ((var_size = check_header_variable(s, "chunkCount",
2012 "int", 23)) >= 0) {
2013
2014 8 s->chunk_count = bytestream2_get_le32(gb);
2015
2016 8 continue;
2017
2/2
✓ Branch 1 taken 18 times.
✓ Branch 2 taken 1914 times.
 1932 } else if ((var_size = check_header_variable(s, "type",
2018 18 "string", 16)) >= 0) {
2019 18 uint8_t key[256] = { 0 };
2020
2021 18 bytestream2_get_buffer(gb, key, FFMIN(sizeof(key) - 1, var_size));
2022
2/2
✓ Branch 0 taken 8 times.
✓ Branch 1 taken 10 times.
 18 if (strncmp("scanlineimage", key, var_size) &&
2023
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 8 times.
 8 strncmp("tiledimage", key, var_size)) {
2024 ✗ ret = AVERROR_PATCHWELCOME;
2025 ✗ goto fail;
2026 }
2027
2028 18 continue;
2029
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 1914 times.
 1914 } else if ((var_size = check_header_variable(s, "preview",
2030 ✗ "preview", 16)) >= 0) {
2031 ✗ uint32_t pw = bytestream2_get_le32(gb);
2032 ✗ uint32_t ph = bytestream2_get_le32(gb);
2033 ✗ uint64_t psize = pw * (uint64_t)ph;
2034 ✗ if (psize > INT64_MAX / 4) {
2035 ✗ ret = AVERROR_INVALIDDATA;
2036 ✗ goto fail;
2037 }
2038 ✗ psize *= 4;
2039
2040 ✗ if ((int64_t)psize >= bytestream2_get_bytes_left(gb)) {
2041 ✗ ret = AVERROR_INVALIDDATA;
2042 ✗ goto fail;
2043 }
2044
2045 ✗ bytestream2_skip(gb, psize);
2046
2047 ✗ continue;
2048 }
2049
2050 // Check if there are enough bytes for a header
2051
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 1914 times.
 1914 if (bytestream2_get_bytes_left(gb) <= 9) {
2052 ✗ av_log(s->avctx, AV_LOG_ERROR, "Incomplete header\n");
2053 ✗ ret = AVERROR_INVALIDDATA;
2054 ✗ goto fail;
2055 }
2056
2057 // Process unknown variables
2058 {
2059 1914 uint8_t name[256] = { 0 };
2060 1914 uint8_t type[256] = { 0 };
2061 1914 uint8_t value[8192] = { 0 };
2062 1914 int i = 0, size;
2063
2064
2/2
✓ Branch 1 taken 26926 times.
✓ Branch 2 taken 1914 times.
 57680 while (bytestream2_get_bytes_left(gb) > 0 &&
2065
2/4
✓ Branch 0 taken 28840 times.
✗ Branch 1 not taken.
✓ Branch 3 taken 26926 times.
✗ Branch 4 not taken.
 55766 bytestream2_peek_byte(gb) && i < 255) {
2066 26926 name[i++] = bytestream2_get_byte(gb);
2067 }
2068
2069 1914 bytestream2_skip(gb, 1);
2070 1914 i = 0;
2071
2/2
✓ Branch 1 taken 8774 times.
✓ Branch 2 taken 1914 times.
 21376 while (bytestream2_get_bytes_left(gb) > 0 &&
2072
2/4
✓ Branch 0 taken 10688 times.
✗ Branch 1 not taken.
✓ Branch 3 taken 8774 times.
✗ Branch 4 not taken.
 19462 bytestream2_peek_byte(gb) && i < 255) {
2073 8774 type[i++] = bytestream2_get_byte(gb);
2074 }
2075 1914 bytestream2_skip(gb, 1);
2076 1914 size = bytestream2_get_le32(gb);
2077
2078 1914 bytestream2_get_buffer(gb, value, FFMIN(sizeof(value) - 1, size));
2079
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1914 times.
 1914 if (size > sizeof(value) - 1)
2080 ✗ bytestream2_skip(gb, size - (sizeof(value) - 1));
2081
2/2
✓ Branch 0 taken 160 times.
✓ Branch 1 taken 1754 times.
 1914 if (!strcmp(type, "string"))
2082 160 av_dict_set(&metadata, name, value, 0);
2083 }
2084 }
2085
2086
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 316 times.
 316 if (s->compression == EXR_UNKN) {
2087 ✗ av_log(s->avctx, AV_LOG_ERROR, "Missing compression attribute.\n");
2088 ✗ ret = AVERROR_INVALIDDATA;
2089 ✗ goto fail;
2090 }
2091
2092
2/2
✓ Branch 0 taken 44 times.
✓ Branch 1 taken 272 times.
 316 if (s->is_tile) {
2093
2/4
✓ Branch 0 taken 44 times.
✗ 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) {
2094 ✗ av_log(s->avctx, AV_LOG_ERROR, "Invalid tile attribute.\n");
2095 ✗ ret = AVERROR_INVALIDDATA;
2096 ✗ goto fail;
2097 }
2098 }
2099
2100
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 316 times.
 316 if (bytestream2_get_bytes_left(gb) <= 0) {
2101 ✗ av_log(s->avctx, AV_LOG_ERROR, "Incomplete frame.\n");
2102 ✗ ret = AVERROR_INVALIDDATA;
2103 ✗ goto fail;
2104 }
2105
2106 316 frame->metadata = metadata;
2107
2108 // aaand we are done
2109 316 bytestream2_skip(gb, 1);
2110 316 return 0;
2111 ✗ fail:
2112 ✗ av_dict_free(&metadata);
2113 ✗ return ret;
2114 }
2115
2116 316 static int decode_frame(AVCodecContext *avctx, AVFrame *picture,
2117 int *got_frame, AVPacket *avpkt)
2118 {
2119 316 EXRContext *s = avctx->priv_data;
2120 316 GetByteContext *gb = &s->gb;
2121 uint8_t *ptr;
2122
2123 int i, y, ret, ymax;
2124 int planes;
2125 int out_line_size;
2126 int nb_blocks; /* nb scanline or nb tile */
2127 uint64_t start_offset_table;
2128 uint64_t start_next_scanline;
2129
2130 316 bytestream2_init(gb, avpkt->data, avpkt->size);
2131
2132
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 316 times.
 316 if ((ret = decode_header(s, picture)) < 0)
2133 ✗ return ret;
2134
2135
1/2
✓ Branch 0 taken 316 times.
✗ Branch 1 not taken.
 316 if (s->compression == EXR_DWAA ||
2136
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 316 times.
 316 s->compression == EXR_DWAB) {
2137 ✗ for (int i = 0; i<s->nb_channels; i++) {
2138 ✗ EXRChannel *channel = &s->channels[i];
2139 ✗ if (channel->pixel_type != s->pixel_type) {
2140 ✗ avpriv_request_sample(s->avctx, "mixed pixel type DWA");
2141 ✗ return AVERROR_PATCHWELCOME;
2142 }
2143 }
2144 }
2145
2146
3/4
✓ Branch 0 taken 88 times.
✓ Branch 1 taken 218 times.
✓ Branch 2 taken 10 times.
✗ Branch 3 not taken.
 316 switch (s->pixel_type) {
2147 88 case EXR_HALF:
2148
2/2
✓ Branch 0 taken 26 times.
✓ Branch 1 taken 62 times.
 88 if (s->channel_offsets[3] >= 0) {
2149
2/2
✓ Branch 0 taken 24 times.
✓ Branch 1 taken 2 times.
 26 if (!s->is_luma) {
2150 24 avctx->pix_fmt = AV_PIX_FMT_GBRAPF16;
2151 } else {
2152 2 avctx->pix_fmt = AV_PIX_FMT_YAF16;
2153 }
2154 } else {
2155
2/2
✓ Branch 0 taken 58 times.
✓ Branch 1 taken 4 times.
 62 if (!s->is_luma) {
2156 58 avctx->pix_fmt = AV_PIX_FMT_GBRPF16;
2157 } else {
2158 4 avctx->pix_fmt = AV_PIX_FMT_GRAYF16;
2159 }
2160 }
2161 88 break;
2162 218 case EXR_FLOAT:
2163
2/2
✓ Branch 0 taken 88 times.
✓ Branch 1 taken 130 times.
 218 if (s->channel_offsets[3] >= 0) {
2164
1/2
✓ Branch 0 taken 88 times.
✗ Branch 1 not taken.
 88 if (!s->is_luma) {
2165 88 avctx->pix_fmt = AV_PIX_FMT_GBRAPF32;
2166 } else {
2167 ✗ avctx->pix_fmt = AV_PIX_FMT_YAF32;
2168 }
2169 } else {
2170
2/2
✓ Branch 0 taken 74 times.
✓ Branch 1 taken 56 times.
 130 if (!s->is_luma) {
2171 74 avctx->pix_fmt = AV_PIX_FMT_GBRPF32;
2172 } else {
2173 56 avctx->pix_fmt = AV_PIX_FMT_GRAYF32;
2174 }
2175 }
2176 218 break;
2177 10 case EXR_UINT:
2178
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 10 times.
 10 if (s->channel_offsets[3] >= 0) {
2179 ✗ if (!s->is_luma) {
2180 ✗ avctx->pix_fmt = AV_PIX_FMT_RGBA64;
2181 } else {
2182 ✗ avctx->pix_fmt = AV_PIX_FMT_YA16;
2183 }
2184 } else {
2185
1/2
✓ Branch 0 taken 10 times.
✗ Branch 1 not taken.
 10 if (!s->is_luma) {
2186 10 avctx->pix_fmt = AV_PIX_FMT_RGB48;
2187 } else {
2188 ✗ avctx->pix_fmt = AV_PIX_FMT_GRAY16;
2189 }
2190 }
2191 10 break;
2192 ✗ default:
2193 ✗ av_log(avctx, AV_LOG_ERROR, "Missing channel list.\n");
2194 ✗ return AVERROR_INVALIDDATA;
2195 }
2196
2197
2/2
✓ Branch 0 taken 114 times.
✓ Branch 1 taken 202 times.
 316 if (s->channel_offsets[3] >= 0)
2198 114 avctx->alpha_mode = AVALPHA_MODE_PREMULTIPLIED;
2199
2200 #if FF_API_EXR_GAMMA
2201
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 316 times.
 316 if (s->apply_trc_type != AVCOL_TRC_UNSPECIFIED)
2202 ✗ avctx->color_trc = s->apply_trc_type;
2203
2/4
✓ Branch 0 taken 316 times.
✗ Branch 1 not taken.
✓ Branch 2 taken 316 times.
✗ Branch 3 not taken.
 316 else if (s->gamma > 0.9999f && s->gamma < 1.0001f)
2204 #endif
2205 316 avctx->color_trc = AVCOL_TRC_LINEAR;
2206
2207
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) {
2208 174 case EXR_RAW:
2209 case EXR_RLE:
2210 case EXR_ZIP1:
2211 174 s->scan_lines_per_block = 1;
2212 174 break;
2213 92 case EXR_PXR24:
2214 case EXR_ZIP16:
2215 92 s->scan_lines_per_block = 16;
2216 92 break;
2217 50 case EXR_PIZ:
2218 case EXR_B44:
2219 case EXR_B44A:
2220 case EXR_DWAA:
2221 50 s->scan_lines_per_block = 32;
2222 50 break;
2223 ✗ case EXR_DWAB:
2224 ✗ s->scan_lines_per_block = 256;
2225 ✗ break;
2226 ✗ default:
2227 ✗ avpriv_report_missing_feature(avctx, "Compression %d", s->compression);
2228 ✗ return AVERROR_PATCHWELCOME;
2229 }
2230
2231 /* Verify the xmin, xmax, ymin and ymax before setting the actual image size.
2232 * It's possible for the data window can larger or outside the display window */
2233
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 ||
2234
2/4
✓ Branch 0 taken 316 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 316 times.
 316 s->ydelta == 0xFFFFFFFF || s->xdelta == 0xFFFFFFFF) {
2235 ✗ av_log(avctx, AV_LOG_ERROR, "Wrong or missing size information.\n");
2236 ✗ return AVERROR_INVALIDDATA;
2237 }
2238
2239
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 316 times.
 316 if ((ret = ff_set_dimensions(avctx, s->w, s->h)) < 0)
2240 ✗ return ret;
2241
2242 316 ff_set_sar(s->avctx, av_d2q(av_int2float(s->sar), 255));
2243
2244
2/2
✓ Branch 0 taken 86 times.
✓ Branch 1 taken 230 times.
 316 if (avctx->skip_frame >= AVDISCARD_ALL)
2245 86 return avpkt->size;
2246
2247 230 s->desc = av_pix_fmt_desc_get(avctx->pix_fmt);
2248
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 230 times.
 230 if (!s->desc)
2249 ✗ return AVERROR_INVALIDDATA;
2250
2251 230 planes = av_pix_fmt_count_planes(avctx->pix_fmt);
2252 230 out_line_size = avctx->width * s->desc->comp[0].step;
2253
2254
2/2
✓ Branch 0 taken 22 times.
✓ Branch 1 taken 208 times.
 230 if (s->is_tile) {
2255
2/4
✓ Branch 0 taken 22 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 22 times.
 22 if (s->tile_attr.ySize <= 0 || s->tile_attr.xSize <= 0)
2256 ✗ return AVERROR_INVALIDDATA;
2257 22 nb_blocks = ((s->xdelta + s->tile_attr.xSize - 1) / s->tile_attr.xSize) *
2258 22 ((s->ydelta + s->tile_attr.ySize - 1) / s->tile_attr.ySize);
2259 } else { /* scanline */
2260 208 nb_blocks = (s->ydelta + s->scan_lines_per_block - 1) /
2261 208 s->scan_lines_per_block;
2262 }
2263
2264
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 230 if ((ret = ff_thread_get_buffer(avctx, picture, 0)) < 0)
2265 ✗ return ret;
2266
2267
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 230 if (bytestream2_get_bytes_left(gb)/8 < nb_blocks)
2268 ✗ return AVERROR_INVALIDDATA;
2269
2270 // check offset table and recreate it if need
2271
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 230 if (!s->is_tile && bytestream2_peek_le64(gb) == 0) {
2272 PutByteContext offset_table_writer;
2273
2274 1 av_log(s->avctx, AV_LOG_DEBUG, "recreating invalid scanline offset table\n");
2275
2276 1 s->offset_table = av_realloc_f(s->offset_table, nb_blocks, 8);
2277
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 1 if (!s->offset_table)
2278 ✗ return AVERROR(ENOMEM);
2279
2280 1 start_offset_table = bytestream2_tell(gb);
2281 1 start_next_scanline = start_offset_table + nb_blocks * 8;
2282 1 bytestream2_init_writer(&offset_table_writer, s->offset_table, nb_blocks * 8);
2283
2284
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 9 for (y = 0; y < nb_blocks; y++) {
2285 /* write offset of prev scanline in offset table */
2286 8 bytestream2_put_le64(&offset_table_writer, start_next_scanline);
2287
2288 /* get len of next scanline */
2289 8 bytestream2_seek(gb, start_next_scanline + 4, SEEK_SET);/* skip line number */
2290 8 start_next_scanline += (bytestream2_get_le32(gb) + 8);
2291 }
2292 1 bytestream2_init(gb, s->offset_table, nb_blocks * 8);
2293 }
2294
2295 // save pointer we are going to use in decode_block
2296 230 s->buf = avpkt->data;
2297 230 s->buf_size = avpkt->size;
2298
2299 // Zero out the start if ymin is not 0
2300
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 880 for (i = 0; i < planes; i++) {
2301 650 ptr = picture->data[i];
2302
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 890 for (y = 0; y < FFMIN(s->ymin, s->h); y++) {
2303 240 memset(ptr, 0, out_line_size);
2304 240 ptr += picture->linesize[i];
2305 }
2306 }
2307
2308 230 s->picture = picture;
2309
2310 230 avctx->execute2(avctx, decode_block, s->thread_data, NULL, nb_blocks);
2311
2312 230 ymax = FFMAX(0, s->ymax + 1);
2313 // Zero out the end if ymax+1 is not h
2314
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 230 if (ymax < avctx->height)
2315
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 16 for (i = 0; i < planes; i++) {
2316 12 ptr = picture->data[i] + (ymax * picture->linesize[i]);
2317
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 2784 for (y = ymax; y < avctx->height; y++) {
2318 2772 memset(ptr, 0, out_line_size);
2319 2772 ptr += picture->linesize[i];
2320 }
2321 }
2322
2323 230 picture->pict_type = AV_PICTURE_TYPE_I;
2324 230 *got_frame = 1;
2325
2326 230 return avpkt->size;
2327 }
2328
2329 172 static av_cold int decode_init(AVCodecContext *avctx)
2330 {
2331 172 EXRContext *s = avctx->priv_data;
2332 #if FF_API_EXR_GAMMA
2333 uint32_t i;
2334 union av_intfloat32 t;
2335 172 float one_gamma = 1.0f / s->gamma;
2336 172 av_csp_trc_function trc_func = NULL;
2337 #endif
2338
2339 172 ff_init_float2half_tables(&s->f2h_tables);
2340 172 ff_init_half2float_tables(&s->h2f_tables);
2341
2342 172 s->avctx = avctx;
2343
2344 172 ff_exrdsp_init(&s->dsp);
2345
2346 #if HAVE_BIGENDIAN
2347 ff_bswapdsp_init(&s->bbdsp);
2348 #endif
2349
2350 #if FF_API_EXR_GAMMA
2351 172 trc_func = av_csp_trc_func_from_id(s->apply_trc_type);
2352
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 172 if (trc_func) {
2353 ✗ for (i = 0; i < 65536; ++i) {
2354 ✗ t.i = half2float(i, &s->h2f_tables);
2355 ✗ t.f = trc_func(t.f);
2356 ✗ s->gamma_table[i] = float2half(av_float2int(t.f), &s->f2h_tables);
2357 }
2358
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 172 } else if (one_gamma != 1.0f) {
2359 ✗ for (i = 0; i < 65536; ++i) {
2360 ✗ t.i = half2float(i, &s->h2f_tables);
2361 /* If negative value we reuse half value */
2362 ✗ if (t.f <= 0.0f) {
2363 ✗ s->gamma_table[i] = i;
2364 } else {
2365 ✗ t.f = powf(t.f, one_gamma);
2366 ✗ s->gamma_table[i] = float2half(t.i, &s->f2h_tables);
2367 }
2368 }
2369 }
2370 #endif
2371
2372 // allocate thread data, used for non EXR_RAW compression types
2373 172 s->thread_data = av_calloc(avctx->thread_count, sizeof(*s->thread_data));
2374
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 172 if (!s->thread_data)
2375 ✗ return AVERROR(ENOMEM);
2376
2377 172 return 0;
2378 }
2379
2380 172 static av_cold int decode_end(AVCodecContext *avctx)
2381 {
2382 172 EXRContext *s = avctx->priv_data;
2383 int i;
2384
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 344 for (i = 0; i < avctx->thread_count; i++) {
2385 172 EXRThreadData *td = &s->thread_data[i];
2386 172 av_freep(&td->uncompressed_data);
2387 172 av_freep(&td->tmp);
2388 172 av_freep(&td->bitmap);
2389 172 av_freep(&td->lut);
2390 172 av_freep(&td->he);
2391 172 av_freep(&td->freq);
2392 172 av_freep(&td->ac_data);
2393 172 av_freep(&td->dc_data);
2394 172 av_freep(&td->rle_data);
2395 172 av_freep(&td->rle_raw_data);
2396 172 ff_vlc_free(&td->vlc);
2397 }
2398
2399 172 av_freep(&s->thread_data);
2400 172 av_freep(&s->channels);
2401 172 av_freep(&s->offset_table);
2402
2403 172 return 0;
2404 }
2405
2406 #define OFFSET(x) offsetof(EXRContext, x)
2407 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
2408 static const AVOption options[] = {
2409 { "layer", "Set the decoding layer", OFFSET(layer),
2410 AV_OPT_TYPE_STRING, { .str = "" }, 0, 0, VD },
2411 { "part", "Set the decoding part", OFFSET(selected_part),
2412 AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VD },
2413 #if FF_API_EXR_GAMMA
2414 { "gamma", "Set the float gamma value when decoding (deprecated, use a scaler)", OFFSET(gamma),
2415 AV_OPT_TYPE_FLOAT, { .dbl = 1.0f }, 0.001, FLT_MAX, VD | AV_OPT_FLAG_DEPRECATED },
2416
2417 // XXX: Note the abuse of the enum using AVCOL_TRC_UNSPECIFIED to subsume the existing gamma option
2418 { "apply_trc", "color transfer characteristics to apply to EXR linear input (deprecated, use a scaler)", OFFSET(apply_trc_type),
2419 AV_OPT_TYPE_INT, {.i64 = AVCOL_TRC_UNSPECIFIED }, 1, AVCOL_TRC_NB-1, VD | AV_OPT_FLAG_DEPRECATED, .unit = "apply_trc_type"},
2420 { "bt709", "BT.709", 0,
2421 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT709 }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2422 { "gamma", "gamma", 0,
2423 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_UNSPECIFIED }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2424 { "gamma22", "BT.470 M", 0,
2425 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_GAMMA22 }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2426 { "gamma28", "BT.470 BG", 0,
2427 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_GAMMA28 }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2428 { "smpte170m", "SMPTE 170 M", 0,
2429 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTE170M }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2430 { "smpte240m", "SMPTE 240 M", 0,
2431 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTE240M }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2432 { "linear", "Linear", 0,
2433 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_LINEAR }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2434 { "log", "Log", 0,
2435 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_LOG }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2436 { "log_sqrt", "Log square root", 0,
2437 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_LOG_SQRT }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2438 { "iec61966_2_4", "IEC 61966-2-4", 0,
2439 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_IEC61966_2_4 }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2440 { "bt1361", "BT.1361", 0,
2441 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT1361_ECG }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2442 { "iec61966_2_1", "IEC 61966-2-1", 0,
2443 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_IEC61966_2_1 }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2444 { "bt2020_10bit", "BT.2020 - 10 bit", 0,
2445 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT2020_10 }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2446 { "bt2020_12bit", "BT.2020 - 12 bit", 0,
2447 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT2020_12 }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2448 { "smpte2084", "SMPTE ST 2084", 0,
2449 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTEST2084 }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2450 { "smpte428_1", "SMPTE ST 428-1", 0,
2451 AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTEST428_1 }, INT_MIN, INT_MAX, VD, .unit = "apply_trc_type"},
2452 #endif
2453
2454 { NULL },
2455 };
2456
2457 static const AVClass exr_class = {
2458 .class_name = "EXR",
2459 .item_name = av_default_item_name,
2460 .option = options,
2461 .version = LIBAVUTIL_VERSION_INT,
2462 };
2463
2464 const FFCodec ff_exr_decoder = {
2465 .p.name = "exr",
2466 CODEC_LONG_NAME("OpenEXR image"),
2467 .p.type = AVMEDIA_TYPE_VIDEO,
2468 .p.id = AV_CODEC_ID_EXR,
2469 .priv_data_size = sizeof(EXRContext),
2470 .init = decode_init,
2471 .close = decode_end,
2472 FF_CODEC_DECODE_CB(decode_frame),
2473 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
2474 AV_CODEC_CAP_SLICE_THREADS,
2475 .caps_internal = FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM,
2476 .p.priv_class = &exr_class,
2477 };
2478