GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/exr.c Lines: 803 1005 79.9 %
Date: 2020-11-28 20:53:16 Branches: 448 645 69.5 %

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
 * exr_half2float() is credited to Aaftab Munshi, Dan Ginsburg, Dave Shreiner.
34
 */
35
36
#include <float.h>
37
#include <zlib.h>
38
39
#include "libavutil/avassert.h"
40
#include "libavutil/common.h"
41
#include "libavutil/imgutils.h"
42
#include "libavutil/intfloat.h"
43
#include "libavutil/avstring.h"
44
#include "libavutil/opt.h"
45
#include "libavutil/color_utils.h"
46
47
#include "avcodec.h"
48
#include "bytestream.h"
49
50
#if HAVE_BIGENDIAN
51
#include "bswapdsp.h"
52
#endif
53
54
#include "exrdsp.h"
55
#include "get_bits.h"
56
#include "internal.h"
57
#include "mathops.h"
58
#include "thread.h"
59
60
enum ExrCompr {
61
    EXR_RAW,
62
    EXR_RLE,
63
    EXR_ZIP1,
64
    EXR_ZIP16,
65
    EXR_PIZ,
66
    EXR_PXR24,
67
    EXR_B44,
68
    EXR_B44A,
69
    EXR_DWA,
70
    EXR_DWB,
71
    EXR_UNKN,
72
};
73
74
enum ExrPixelType {
75
    EXR_UINT,
76
    EXR_HALF,
77
    EXR_FLOAT,
78
    EXR_UNKNOWN,
79
};
80
81
enum ExrTileLevelMode {
82
    EXR_TILE_LEVEL_ONE,
83
    EXR_TILE_LEVEL_MIPMAP,
84
    EXR_TILE_LEVEL_RIPMAP,
85
    EXR_TILE_LEVEL_UNKNOWN,
86
};
87
88
enum ExrTileLevelRound {
89
    EXR_TILE_ROUND_UP,
90
    EXR_TILE_ROUND_DOWN,
91
    EXR_TILE_ROUND_UNKNOWN,
92
};
93
94
typedef struct EXRChannel {
95
    int xsub, ysub;
96
    enum ExrPixelType pixel_type;
97
} EXRChannel;
98
99
typedef struct EXRTileAttribute {
100
    int32_t xSize;
101
    int32_t ySize;
102
    enum ExrTileLevelMode level_mode;
103
    enum ExrTileLevelRound level_round;
104
} EXRTileAttribute;
105
106
typedef struct EXRThreadData {
107
    uint8_t *uncompressed_data;
108
    int uncompressed_size;
109
110
    uint8_t *tmp;
111
    int tmp_size;
112
113
    uint8_t *bitmap;
114
    uint16_t *lut;
115
116
    int ysize, xsize;
117
118
    int channel_line_size;
119
} EXRThreadData;
120
121
typedef struct EXRContext {
122
    AVClass *class;
123
    AVFrame *picture;
124
    AVCodecContext *avctx;
125
    ExrDSPContext dsp;
126
127
#if HAVE_BIGENDIAN
128
    BswapDSPContext bbdsp;
129
#endif
130
131
    enum ExrCompr compression;
132
    enum ExrPixelType pixel_type;
133
    int channel_offsets[4]; // 0 = red, 1 = green, 2 = blue and 3 = alpha
134
    const AVPixFmtDescriptor *desc;
135
136
    int w, h;
137
    int32_t xmax, xmin;
138
    int32_t ymax, ymin;
139
    uint32_t xdelta, ydelta;
140
141
    int scan_lines_per_block;
142
143
    EXRTileAttribute tile_attr; /* header data attribute of tile */
144
    int is_tile; /* 0 if scanline, 1 if tile */
145
146
    int is_luma;/* 1 if there is an Y plane */
147
148
    GetByteContext gb;
149
    const uint8_t *buf;
150
    int buf_size;
151
152
    EXRChannel *channels;
153
    int nb_channels;
154
    int current_channel_offset;
155
156
    EXRThreadData *thread_data;
157
158
    const char *layer;
159
160
    enum AVColorTransferCharacteristic apply_trc_type;
161
    float gamma;
162
    union av_intfloat32 gamma_table[65536];
163
} EXRContext;
164
165
/* -15 stored using a single precision bias of 127 */
166
#define HALF_FLOAT_MIN_BIASED_EXP_AS_SINGLE_FP_EXP 0x38000000
167
168
/* max exponent value in single precision that will be converted
169
 * to Inf or Nan when stored as a half-float */
170
#define HALF_FLOAT_MAX_BIASED_EXP_AS_SINGLE_FP_EXP 0x47800000
171
172
/* 255 is the max exponent biased value */
173
#define FLOAT_MAX_BIASED_EXP (0xFF << 23)
174
175
#define HALF_FLOAT_MAX_BIASED_EXP (0x1F << 10)
176
177
/**
178
 * Convert a half float as a uint16_t into a full float.
179
 *
180
 * @param hf half float as uint16_t
181
 *
182
 * @return float value
183
 */
184
9568256
static union av_intfloat32 exr_half2float(uint16_t hf)
185
{
186
9568256
    unsigned int sign = (unsigned int) (hf >> 15);
187
9568256
    unsigned int mantissa = (unsigned int) (hf & ((1 << 10) - 1));
188
9568256
    unsigned int exp = (unsigned int) (hf & HALF_FLOAT_MAX_BIASED_EXP);
189
    union av_intfloat32 f;
190
191
9568256
    if (exp == HALF_FLOAT_MAX_BIASED_EXP) {
192
        // we have a half-float NaN or Inf
193
        // half-float NaNs will be converted to a single precision NaN
194
        // half-float Infs will be converted to a single precision Inf
195
299008
        exp = FLOAT_MAX_BIASED_EXP;
196
299008
        if (mantissa)
197
298716
            mantissa = (1 << 23) - 1;    // set all bits to indicate a NaN
198
9269248
    } else if (exp == 0x0) {
199
        // convert half-float zero/denorm to single precision value
200
299008
        if (mantissa) {
201
298716
            mantissa <<= 1;
202
298716
            exp = HALF_FLOAT_MIN_BIASED_EXP_AS_SINGLE_FP_EXP;
203
            // check for leading 1 in denorm mantissa
204
594512
            while (!(mantissa & (1 << 10))) {
205
                // for every leading 0, decrement single precision exponent by 1
206
                // and shift half-float mantissa value to the left
207
295796
                mantissa <<= 1;
208
295796
                exp -= (1 << 23);
209
            }
210
            // clamp the mantissa to 10 bits
211
298716
            mantissa &= ((1 << 10) - 1);
212
            // shift left to generate single-precision mantissa of 23 bits
213
298716
            mantissa <<= 13;
214
        }
215
    } else {
216
        // shift left to generate single-precision mantissa of 23 bits
217
8970240
        mantissa <<= 13;
218
        // generate single precision biased exponent value
219
8970240
        exp = (exp << 13) + HALF_FLOAT_MIN_BIASED_EXP_AS_SINGLE_FP_EXP;
220
    }
221
222
9568256
    f.i = (sign << 31) | exp | mantissa;
223
224
9568256
    return f;
225
}
226
227
1806
static int zip_uncompress(EXRContext *s, const uint8_t *src, int compressed_size,
228
                          int uncompressed_size, EXRThreadData *td)
229
{
230
1806
    unsigned long dest_len = uncompressed_size;
231
232
1806
    if (uncompress(td->tmp, &dest_len, src, compressed_size) != Z_OK ||
233
1806
        dest_len != uncompressed_size)
234
        return AVERROR_INVALIDDATA;
235
236
    av_assert1(uncompressed_size % 2 == 0);
237
238
1806
    s->dsp.predictor(td->tmp, uncompressed_size);
239
1806
    s->dsp.reorder_pixels(td->uncompressed_data, td->tmp, uncompressed_size);
240
241
1806
    return 0;
242
}
243
244
1386
static int rle_uncompress(EXRContext *ctx, const uint8_t *src, int compressed_size,
245
                          int uncompressed_size, EXRThreadData *td)
246
{
247
1386
    uint8_t *d      = td->tmp;
248
1386
    const int8_t *s = src;
249
1386
    int ssize       = compressed_size;
250
1386
    int dsize       = uncompressed_size;
251
1386
    uint8_t *dend   = d + dsize;
252
    int count;
253
254
378128
    while (ssize > 0) {
255
376742
        count = *s++;
256
257
376742
        if (count < 0) {
258
186494
            count = -count;
259
260
186494
            if ((dsize -= count) < 0 ||
261
186494
                (ssize -= count + 1) < 0)
262
                return AVERROR_INVALIDDATA;
263
264
3463010
            while (count--)
265
3276516
                *d++ = *s++;
266
        } else {
267
190248
            count++;
268
269
190248
            if ((dsize -= count) < 0 ||
270
190248
                (ssize -= 2) < 0)
271
                return AVERROR_INVALIDDATA;
272
273
3270228
            while (count--)
274
3079980
                *d++ = *s;
275
276
190248
            s++;
277
        }
278
    }
279
280
1386
    if (dend != d)
281
        return AVERROR_INVALIDDATA;
282
283
    av_assert1(uncompressed_size % 2 == 0);
284
285
1386
    ctx->dsp.predictor(td->tmp, uncompressed_size);
286
1386
    ctx->dsp.reorder_pixels(td->uncompressed_data, td->tmp, uncompressed_size);
287
288
1386
    return 0;
289
}
290
291
#define USHORT_RANGE (1 << 16)
292
#define BITMAP_SIZE  (1 << 13)
293
294
60
static uint16_t reverse_lut(const uint8_t *bitmap, uint16_t *lut)
295
{
296
60
    int i, k = 0;
297
298
3932220
    for (i = 0; i < USHORT_RANGE; i++)
299

3932160
        if ((i == 0) || (bitmap[i >> 3] & (1 << (i & 7))))
300
30770
            lut[k++] = i;
301
302
60
    i = k - 1;
303
304
60
    memset(lut + k, 0, (USHORT_RANGE - k) * 2);
305
306
60
    return i;
307
}
308
309
60
static void apply_lut(const uint16_t *lut, uint16_t *dst, int dsize)
310
{
311
    int i;
312
313
1641504
    for (i = 0; i < dsize; ++i)
314
1641444
        dst[i] = lut[dst[i]];
315
60
}
316
317
#define HUF_ENCBITS 16  // literal (value) bit length
318
#define HUF_DECBITS 14  // decoding bit size (>= 8)
319
320
#define HUF_ENCSIZE ((1 << HUF_ENCBITS) + 1)  // encoding table size
321
#define HUF_DECSIZE (1 << HUF_DECBITS)        // decoding table size
322
#define HUF_DECMASK (HUF_DECSIZE - 1)
323
324
typedef struct HufDec {
325
    int len;
326
    int lit;
327
    int *p;
328
} HufDec;
329
330
60
static void huf_canonical_code_table(uint64_t *hcode)
331
{
332
60
    uint64_t c, n[59] = { 0 };
333
    int i;
334
335
3932280
    for (i = 0; i < HUF_ENCSIZE; ++i)
336
3932220
        n[hcode[i]] += 1;
337
338
60
    c = 0;
339
3540
    for (i = 58; i > 0; --i) {
340
3480
        uint64_t nc = ((c + n[i]) >> 1);
341
3480
        n[i] = c;
342
3480
        c    = nc;
343
    }
344
345
3932280
    for (i = 0; i < HUF_ENCSIZE; ++i) {
346
3932220
        int l = hcode[i];
347
348
3932220
        if (l > 0)
349
12834
            hcode[i] = l | (n[l]++ << 6);
350
    }
351
60
}
352
353
#define SHORT_ZEROCODE_RUN  59
354
#define LONG_ZEROCODE_RUN   63
355
#define SHORTEST_LONG_RUN   (2 + LONG_ZEROCODE_RUN - SHORT_ZEROCODE_RUN)
356
#define LONGEST_LONG_RUN    (255 + SHORTEST_LONG_RUN)
357
358
60
static int huf_unpack_enc_table(GetByteContext *gb,
359
                                int32_t im, int32_t iM, uint64_t *hcode)
360
{
361
    GetBitContext gbit;
362
60
    int ret = init_get_bits8(&gbit, gb->buffer, bytestream2_get_bytes_left(gb));
363
60
    if (ret < 0)
364
        return ret;
365
366
33272
    for (; im <= iM; im++) {
367
33212
        uint64_t l = hcode[im] = get_bits(&gbit, 6);
368
369
33212
        if (l == LONG_ZEROCODE_RUN) {
370
16678
            int zerun = get_bits(&gbit, 8) + SHORTEST_LONG_RUN;
371
372
16678
            if (im + zerun > iM + 1)
373
                return AVERROR_INVALIDDATA;
374
375
3927930
            while (zerun--)
376
3911252
                hcode[im++] = 0;
377
378
16678
            im--;
379
16534
        } else if (l >= SHORT_ZEROCODE_RUN) {
380
2106
            int zerun = l - SHORT_ZEROCODE_RUN + 2;
381
382
2106
            if (im + zerun > iM + 1)
383
                return AVERROR_INVALIDDATA;
384
385
8646
            while (zerun--)
386
6540
                hcode[im++] = 0;
387
388
2106
            im--;
389
        }
390
    }
391
392
60
    bytestream2_skip(gb, (get_bits_count(&gbit) + 7) / 8);
393
60
    huf_canonical_code_table(hcode);
394
395
60
    return 0;
396
}
397
398
60
static int huf_build_dec_table(const uint64_t *hcode, int im,
399
                               int iM, HufDec *hdecod)
400
{
401
3932280
    for (; im <= iM; im++) {
402
3932220
        uint64_t c = hcode[im] >> 6;
403
3932220
        int i, l = hcode[im] & 63;
404
405
3932220
        if (c >> l)
406
            return AVERROR_INVALIDDATA;
407
408
3932220
        if (l > HUF_DECBITS) {
409
            HufDec *pl = hdecod + (c >> (l - HUF_DECBITS));
410
            if (pl->len)
411
                return AVERROR_INVALIDDATA;
412
413
            pl->lit++;
414
415
            pl->p = av_realloc(pl->p, pl->lit * sizeof(int));
416
            if (!pl->p)
417
                return AVERROR(ENOMEM);
418
419
            pl->p[pl->lit - 1] = im;
420
3932220
        } else if (l) {
421
12834
            HufDec *pl = hdecod + (c << (HUF_DECBITS - l));
422
423
995874
            for (i = 1 << (HUF_DECBITS - l); i > 0; i--, pl++) {
424

983040
                if (pl->len || pl->p)
425
                    return AVERROR_INVALIDDATA;
426
983040
                pl->len = l;
427
983040
                pl->lit = im;
428
            }
429
        }
430
    }
431
432
60
    return 0;
433
}
434
435
#define get_char(c, lc, gb)                                                   \
436
{                                                                             \
437
        c   = (c << 8) | bytestream2_get_byte(gb);                            \
438
        lc += 8;                                                              \
439
}
440
441
#define get_code(po, rlc, c, lc, gb, out, oe, outb)                           \
442
{                                                                             \
443
        if (po == rlc) {                                                      \
444
            if (lc < 8)                                                       \
445
                get_char(c, lc, gb);                                          \
446
            lc -= 8;                                                          \
447
                                                                              \
448
            cs = c >> lc;                                                     \
449
                                                                              \
450
            if (out + cs > oe || out == outb)                                 \
451
                return AVERROR_INVALIDDATA;                                   \
452
                                                                              \
453
            s = out[-1];                                                      \
454
                                                                              \
455
            while (cs-- > 0)                                                  \
456
                *out++ = s;                                                   \
457
        } else if (out < oe) {                                                \
458
            *out++ = po;                                                      \
459
        } else {                                                              \
460
            return AVERROR_INVALIDDATA;                                       \
461
        }                                                                     \
462
}
463
464
60
static int huf_decode(const uint64_t *hcode, const HufDec *hdecod,
465
                      GetByteContext *gb, int nbits,
466
                      int rlc, int no, uint16_t *out)
467
{
468
60
    uint64_t c        = 0;
469
60
    uint16_t *outb    = out;
470
60
    uint16_t *oe      = out + no;
471
60
    const uint8_t *ie = gb->buffer + (nbits + 7) / 8; // input byte size
472
    uint8_t cs;
473
    uint16_t s;
474
60
    int i, lc = 0;
475
476
162350
    while (gb->buffer < ie) {
477
162290
        get_char(c, lc, gb);
478
479
589162
        while (lc >= HUF_DECBITS) {
480
426872
            const HufDec pl = hdecod[(c >> (lc - HUF_DECBITS)) & HUF_DECMASK];
481
482
426872
            if (pl.len) {
483
426872
                lc -= pl.len;
484



1647684
                get_code(pl.lit, rlc, c, lc, gb, out, oe, outb);
485
            } else {
486
                int j;
487
488
                if (!pl.p)
489
                    return AVERROR_INVALIDDATA;
490
491
                for (j = 0; j < pl.lit; j++) {
492
                    int l = hcode[pl.p[j]] & 63;
493
494
                    while (lc < l && bytestream2_get_bytes_left(gb) > 0)
495
                        get_char(c, lc, gb);
496
497
                    if (lc >= l) {
498
                        if ((hcode[pl.p[j]] >> 6) ==
499
                            ((c >> (lc - l)) & ((1LL << l) - 1))) {
500
                            lc -= l;
501
                            get_code(pl.p[j], rlc, c, lc, gb, out, oe, outb);
502
                            break;
503
                        }
504
                    }
505
                }
506
507
                if (j == pl.lit)
508
                    return AVERROR_INVALIDDATA;
509
            }
510
        }
511
    }
512
513
60
    i   = (8 - nbits) & 7;
514
60
    c >>= i;
515
60
    lc -= i;
516
517
150
    while (lc > 0) {
518
90
        const HufDec pl = hdecod[(c << (HUF_DECBITS - lc)) & HUF_DECMASK];
519
520

90
        if (pl.len && lc >= pl.len) {
521
90
            lc -= pl.len;
522



534
            get_code(pl.lit, rlc, c, lc, gb, out, oe, outb);
523
        } else {
524
            return AVERROR_INVALIDDATA;
525
        }
526
    }
527
528
60
    if (out - outb != no)
529
        return AVERROR_INVALIDDATA;
530
60
    return 0;
531
}
532
533
60
static int huf_uncompress(GetByteContext *gb,
534
                          uint16_t *dst, int dst_size)
535
{
536
    int32_t src_size, im, iM;
537
    uint32_t nBits;
538
    uint64_t *freq;
539
    HufDec *hdec;
540
    int ret, i;
541
542
60
    src_size = bytestream2_get_le32(gb);
543
60
    im       = bytestream2_get_le32(gb);
544
60
    iM       = bytestream2_get_le32(gb);
545
60
    bytestream2_skip(gb, 4);
546
60
    nBits = bytestream2_get_le32(gb);
547

60
    if (im < 0 || im >= HUF_ENCSIZE ||
548

60
        iM < 0 || iM >= HUF_ENCSIZE ||
549
        src_size < 0)
550
        return AVERROR_INVALIDDATA;
551
552
60
    bytestream2_skip(gb, 4);
553
554
60
    freq = av_mallocz_array(HUF_ENCSIZE, sizeof(*freq));
555
60
    hdec = av_mallocz_array(HUF_DECSIZE, sizeof(*hdec));
556

60
    if (!freq || !hdec) {
557
        ret = AVERROR(ENOMEM);
558
        goto fail;
559
    }
560
561
60
    if ((ret = huf_unpack_enc_table(gb, im, iM, freq)) < 0)
562
        goto fail;
563
564
60
    if (nBits > 8 * bytestream2_get_bytes_left(gb)) {
565
        ret = AVERROR_INVALIDDATA;
566
        goto fail;
567
    }
568
569
60
    if ((ret = huf_build_dec_table(freq, im, iM, hdec)) < 0)
570
        goto fail;
571
60
    ret = huf_decode(freq, hdec, gb, nBits, iM, dst_size, dst);
572
573
60
fail:
574
983100
    for (i = 0; i < HUF_DECSIZE; i++)
575
983040
        if (hdec)
576
983040
            av_freep(&hdec[i].p);
577
578
60
    av_free(freq);
579
60
    av_free(hdec);
580
581
60
    return ret;
582
}
583
584
2183418
static inline void wdec14(uint16_t l, uint16_t h, uint16_t *a, uint16_t *b)
585
{
586
2183418
    int16_t ls = l;
587
2183418
    int16_t hs = h;
588
2183418
    int hi     = hs;
589
2183418
    int ai     = ls + (hi & 1) + (hi >> 1);
590
2183418
    int16_t as = ai;
591
2183418
    int16_t bs = ai - hi;
592
593
2183418
    *a = as;
594
2183418
    *b = bs;
595
2183418
}
596
597
#define NBITS      16
598
#define A_OFFSET  (1 << (NBITS - 1))
599
#define MOD_MASK  ((1 << NBITS) - 1)
600
601
static inline void wdec16(uint16_t l, uint16_t h, uint16_t *a, uint16_t *b)
602
{
603
    int m  = l;
604
    int d  = h;
605
    int bb = (m - (d >> 1)) & MOD_MASK;
606
    int aa = (d + bb - A_OFFSET) & MOD_MASK;
607
    *b = bb;
608
    *a = aa;
609
}
610
611
204
static void wav_decode(uint16_t *in, int nx, int ox,
612
                       int ny, int oy, uint16_t mx)
613
{
614
204
    int w14 = (mx < (1 << 14));
615
204
    int n   = (nx > ny) ? ny : nx;
616
204
    int p   = 1;
617
    int p2;
618
619
1386
    while (p <= n)
620
1182
        p <<= 1;
621
622
204
    p >>= 1;
623
204
    p2  = p;
624
204
    p >>= 1;
625
626
1182
    while (p >= 1) {
627
978
        uint16_t *py = in;
628
978
        uint16_t *ey = in + oy * (ny - p2);
629
        uint16_t i00, i01, i10, i11;
630
978
        int oy1 = oy * p;
631
978
        int oy2 = oy * p2;
632
978
        int ox1 = ox * p;
633
978
        int ox2 = ox * p2;
634
635
6858
        for (; py <= ey; py += oy2) {
636
5880
            uint16_t *px = py;
637
5880
            uint16_t *ex = py + ox * (nx - p2);
638
639
551382
            for (; px <= ex; px += ox2) {
640
545502
                uint16_t *p01 = px + ox1;
641
545502
                uint16_t *p10 = px + oy1;
642
545502
                uint16_t *p11 = p10 + ox1;
643
644
545502
                if (w14) {
645
545502
                    wdec14(*px, *p10, &i00, &i10);
646
545502
                    wdec14(*p01, *p11, &i01, &i11);
647
545502
                    wdec14(i00, i01, px, p01);
648
545502
                    wdec14(i10, i11, p10, p11);
649
                } else {
650
                    wdec16(*px, *p10, &i00, &i10);
651
                    wdec16(*p01, *p11, &i01, &i11);
652
                    wdec16(i00, i01, px, p01);
653
                    wdec16(i10, i11, p10, p11);
654
                }
655
            }
656
657
5880
            if (nx & p) {
658
648
                uint16_t *p10 = px + oy1;
659
660
648
                if (w14)
661
648
                    wdec14(*px, *p10, &i00, p10);
662
                else
663
                    wdec16(*px, *p10, &i00, p10);
664
665
648
                *px = i00;
666
            }
667
        }
668
669
978
        if (ny & p) {
670
30
            uint16_t *px = py;
671
30
            uint16_t *ex = py + ox * (nx - p2);
672
673
792
            for (; px <= ex; px += ox2) {
674
762
                uint16_t *p01 = px + ox1;
675
676
762
                if (w14)
677
762
                    wdec14(*px, *p01, &i00, p01);
678
                else
679
                    wdec16(*px, *p01, &i00, p01);
680
681
762
                *px = i00;
682
            }
683
        }
684
685
978
        p2  = p;
686
978
        p >>= 1;
687
    }
688
204
}
689
690
60
static int piz_uncompress(EXRContext *s, const uint8_t *src, int ssize,
691
                          int dsize, EXRThreadData *td)
692
{
693
    GetByteContext gb;
694
    uint16_t maxval, min_non_zero, max_non_zero;
695
    uint16_t *ptr;
696
60
    uint16_t *tmp = (uint16_t *)td->tmp;
697
    uint16_t *out;
698
    uint16_t *in;
699
    int ret, i, j;
700
    int pixel_half_size;/* 1 for half, 2 for float and uint32 */
701
    EXRChannel *channel;
702
    int tmp_offset;
703
704
60
    if (!td->bitmap)
705
14
        td->bitmap = av_malloc(BITMAP_SIZE);
706
60
    if (!td->lut)
707
14
        td->lut = av_malloc(1 << 17);
708

60
    if (!td->bitmap || !td->lut) {
709
        av_freep(&td->bitmap);
710
        av_freep(&td->lut);
711
        return AVERROR(ENOMEM);
712
    }
713
714
60
    bytestream2_init(&gb, src, ssize);
715
60
    min_non_zero = bytestream2_get_le16(&gb);
716
60
    max_non_zero = bytestream2_get_le16(&gb);
717
718
60
    if (max_non_zero >= BITMAP_SIZE)
719
        return AVERROR_INVALIDDATA;
720
721
60
    memset(td->bitmap, 0, FFMIN(min_non_zero, BITMAP_SIZE));
722
60
    if (min_non_zero <= max_non_zero)
723
60
        bytestream2_get_buffer(&gb, td->bitmap + min_non_zero,
724
60
                               max_non_zero - min_non_zero + 1);
725
60
    memset(td->bitmap + max_non_zero + 1, 0, BITMAP_SIZE - max_non_zero - 1);
726
727
60
    maxval = reverse_lut(td->bitmap, td->lut);
728
729
60
    ret = huf_uncompress(&gb, tmp, dsize / sizeof(uint16_t));
730
60
    if (ret)
731
        return ret;
732
733
60
    ptr = tmp;
734
240
    for (i = 0; i < s->nb_channels; i++) {
735
180
        channel = &s->channels[i];
736
737
180
        if (channel->pixel_type == EXR_HALF)
738
156
            pixel_half_size = 1;
739
        else
740
24
            pixel_half_size = 2;
741
742
384
        for (j = 0; j < pixel_half_size; j++)
743
204
            wav_decode(ptr + j, td->xsize, pixel_half_size, td->ysize,
744
204
                       td->xsize * pixel_half_size, maxval);
745
180
        ptr += td->xsize * td->ysize * pixel_half_size;
746
    }
747
748
60
    apply_lut(td->lut, tmp, dsize / sizeof(uint16_t));
749
750
60
    out = (uint16_t *)td->uncompressed_data;
751
1842
    for (i = 0; i < td->ysize; i++) {
752
1782
        tmp_offset = 0;
753
7128
        for (j = 0; j < s->nb_channels; j++) {
754
5346
            channel = &s->channels[j];
755
5346
            if (channel->pixel_type == EXR_HALF)
756
4578
                pixel_half_size = 1;
757
            else
758
768
                pixel_half_size = 2;
759
760
5346
            in = tmp + tmp_offset * td->xsize * td->ysize + i * td->xsize * pixel_half_size;
761
5346
            tmp_offset += pixel_half_size;
762
763
#if HAVE_BIGENDIAN
764
            s->bbdsp.bswap16_buf(out, in, td->xsize * pixel_half_size);
765
#else
766
5346
            memcpy(out, in, td->xsize * 2 * pixel_half_size);
767
#endif
768
5346
            out += td->xsize * pixel_half_size;
769
        }
770
    }
771
772
60
    return 0;
773
}
774
775
122
static int pxr24_uncompress(EXRContext *s, const uint8_t *src,
776
                            int compressed_size, int uncompressed_size,
777
                            EXRThreadData *td)
778
{
779
122
    unsigned long dest_len, expected_len = 0;
780
122
    const uint8_t *in = td->tmp;
781
    uint8_t *out;
782
    int c, i, j;
783
784
558
    for (i = 0; i < s->nb_channels; i++) {
785
436
        if (s->channels[i].pixel_type == EXR_FLOAT) {
786
62
            expected_len += (td->xsize * td->ysize * 3);/* PRX 24 store float in 24 bit instead of 32 */
787
374
        } else if (s->channels[i].pixel_type == EXR_HALF) {
788
362
            expected_len += (td->xsize * td->ysize * 2);
789
        } else {//UINT 32
790
12
            expected_len += (td->xsize * td->ysize * 4);
791
        }
792
    }
793
794
122
    dest_len = expected_len;
795
796
122
    if (uncompress(td->tmp, &dest_len, src, compressed_size) != Z_OK) {
797
        return AVERROR_INVALIDDATA;
798
122
    } else if (dest_len != expected_len) {
799
        return AVERROR_INVALIDDATA;
800
    }
801
802
122
    out = td->uncompressed_data;
803
1900
    for (i = 0; i < td->ysize; i++)
804
7678
        for (c = 0; c < s->nb_channels; c++) {
805
5900
            EXRChannel *channel = &s->channels[c];
806
            const uint8_t *ptr[4];
807
5900
            uint32_t pixel = 0;
808
809

5900
            switch (channel->pixel_type) {
810
496
            case EXR_FLOAT:
811
496
                ptr[0] = in;
812
496
                ptr[1] = ptr[0] + td->xsize;
813
496
                ptr[2] = ptr[1] + td->xsize;
814
496
                in     = ptr[2] + td->xsize;
815
816
6448
                for (j = 0; j < td->xsize; ++j) {
817
5952
                    uint32_t diff = ((unsigned)*(ptr[0]++) << 24) |
818
5952
                                    (*(ptr[1]++) << 16) |
819
5952
                                    (*(ptr[2]++) << 8);
820
5952
                    pixel += diff;
821
5952
                    bytestream_put_le32(&out, pixel);
822
                }
823
496
                break;
824
5302
            case EXR_HALF:
825
5302
                ptr[0] = in;
826
5302
                ptr[1] = ptr[0] + td->xsize;
827
5302
                in     = ptr[1] + td->xsize;
828
3851380
                for (j = 0; j < td->xsize; j++) {
829
3846078
                    uint32_t diff = (*(ptr[0]++) << 8) | *(ptr[1]++);
830
831
3846078
                    pixel += diff;
832
3846078
                    bytestream_put_le16(&out, pixel);
833
                }
834
5302
                break;
835
102
            case EXR_UINT:
836
102
                ptr[0] = in;
837
102
                ptr[1] = ptr[0] + s->xdelta;
838
102
                ptr[2] = ptr[1] + s->xdelta;
839
102
                ptr[3] = ptr[2] + s->xdelta;
840
102
                in     = ptr[3] + s->xdelta;
841
842
1380
                for (j = 0; j < s->xdelta; ++j) {
843
1278
                    uint32_t diff = ((uint32_t)*(ptr[0]++) << 24) |
844
1278
                    (*(ptr[1]++) << 16) |
845
1278
                    (*(ptr[2]++) << 8 ) |
846
1278
                    (*(ptr[3]++));
847
1278
                    pixel += diff;
848
1278
                    bytestream_put_le32(&out, pixel);
849
                }
850
102
                break;
851
            default:
852
                return AVERROR_INVALIDDATA;
853
            }
854
        }
855
856
122
    return 0;
857
}
858
859
118558
static void unpack_14(const uint8_t b[14], uint16_t s[16])
860
{
861
118558
    unsigned short shift = (b[ 2] >> 2) & 15;
862
118558
    unsigned short bias = (0x20 << shift);
863
    int i;
864
865
118558
    s[ 0] = (b[0] << 8) | b[1];
866
867
118558
    s[ 4] = s[ 0] + ((((b[ 2] << 4) | (b[ 3] >> 4)) & 0x3f) << shift) - bias;
868
118558
    s[ 8] = s[ 4] + ((((b[ 3] << 2) | (b[ 4] >> 6)) & 0x3f) << shift) - bias;
869
118558
    s[12] = s[ 8] +   ((b[ 4]                       & 0x3f) << shift) - bias;
870
871
118558
    s[ 1] = s[ 0] +   ((b[ 5] >> 2)                         << shift) - bias;
872
118558
    s[ 5] = s[ 4] + ((((b[ 5] << 4) | (b[ 6] >> 4)) & 0x3f) << shift) - bias;
873
118558
    s[ 9] = s[ 8] + ((((b[ 6] << 2) | (b[ 7] >> 6)) & 0x3f) << shift) - bias;
874
118558
    s[13] = s[12] +   ((b[ 7]                       & 0x3f) << shift) - bias;
875
876
118558
    s[ 2] = s[ 1] +   ((b[ 8] >> 2)                         << shift) - bias;
877
118558
    s[ 6] = s[ 5] + ((((b[ 8] << 4) | (b[ 9] >> 4)) & 0x3f) << shift) - bias;
878
118558
    s[10] = s[ 9] + ((((b[ 9] << 2) | (b[10] >> 6)) & 0x3f) << shift) - bias;
879
118558
    s[14] = s[13] +   ((b[10]                       & 0x3f) << shift) - bias;
880
881
118558
    s[ 3] = s[ 2] +   ((b[11] >> 2)                         << shift) - bias;
882
118558
    s[ 7] = s[ 6] + ((((b[11] << 4) | (b[12] >> 4)) & 0x3f) << shift) - bias;
883
118558
    s[11] = s[10] + ((((b[12] << 2) | (b[13] >> 6)) & 0x3f) << shift) - bias;
884
118558
    s[15] = s[14] +   ((b[13]                       & 0x3f) << shift) - bias;
885
886
2015486
    for (i = 0; i < 16; ++i) {
887
1896928
        if (s[i] & 0x8000)
888
1884694
            s[i] &= 0x7fff;
889
        else
890
12234
            s[i] = ~s[i];
891
    }
892
118558
}
893
894
212
static void unpack_3(const uint8_t b[3], uint16_t s[16])
895
{
896
    int i;
897
898
212
    s[0] = (b[0] << 8) | b[1];
899
900
212
    if (s[0] & 0x8000)
901
210
        s[0] &= 0x7fff;
902
    else
903
2
        s[0] = ~s[0];
904
905
3392
    for (i = 1; i < 16; i++)
906
3180
        s[i] = s[0];
907
212
}
908
909
910
46
static int b44_uncompress(EXRContext *s, const uint8_t *src, int compressed_size,
911
                          int uncompressed_size, EXRThreadData *td) {
912
46
    const int8_t *sr = src;
913
46
    int stay_to_uncompress = compressed_size;
914
    int nb_b44_block_w, nb_b44_block_h;
915
    int index_tl_x, index_tl_y, index_out, index_tmp;
916
    uint16_t tmp_buffer[16]; /* B44 use 4x4 half float pixel */
917
    int c, iY, iX, y, x;
918
46
    int target_channel_offset = 0;
919
920
    /* calc B44 block count */
921
46
    nb_b44_block_w = td->xsize / 4;
922
46
    if ((td->xsize % 4) != 0)
923
26
        nb_b44_block_w++;
924
925
46
    nb_b44_block_h = td->ysize / 4;
926
46
    if ((td->ysize % 4) != 0)
927
12
        nb_b44_block_h++;
928
929
312
    for (c = 0; c < s->nb_channels; c++) {
930
266
        if (s->channels[c].pixel_type == EXR_HALF) {/* B44 only compress half float data */
931
918
            for (iY = 0; iY < nb_b44_block_h; iY++) {
932
119518
                for (iX = 0; iX < nb_b44_block_w; iX++) {/* For each B44 block */
933
118770
                    if (stay_to_uncompress < 3) {
934
                        av_log(s, AV_LOG_ERROR, "Not enough data for B44A block: %d", stay_to_uncompress);
935
                        return AVERROR_INVALIDDATA;
936
                    }
937
938
118770
                    if (src[compressed_size - stay_to_uncompress + 2] == 0xfc) { /* B44A block */
939
212
                        unpack_3(sr, tmp_buffer);
940
212
                        sr += 3;
941
212
                        stay_to_uncompress -= 3;
942
                    }  else {/* B44 Block */
943
118558
                        if (stay_to_uncompress < 14) {
944
                            av_log(s, AV_LOG_ERROR, "Not enough data for B44 block: %d", stay_to_uncompress);
945
                            return AVERROR_INVALIDDATA;
946
                        }
947
118558
                        unpack_14(sr, tmp_buffer);
948
118558
                        sr += 14;
949
118558
                        stay_to_uncompress -= 14;
950
                    }
951
952
                    /* copy data to uncompress buffer (B44 block can exceed target resolution)*/
953
118770
                    index_tl_x = iX * 4;
954
118770
                    index_tl_y = iY * 4;
955
956

591522
                    for (y = index_tl_y; y < FFMIN(index_tl_y + 4, td->ysize); y++) {
957

2360726
                        for (x = index_tl_x; x < FFMIN(index_tl_x + 4, td->xsize); x++) {
958
1887974
                            index_out = target_channel_offset * td->xsize + y * td->channel_line_size + 2 * x;
959
1887974
                            index_tmp = (y-index_tl_y) * 4 + (x-index_tl_x);
960
1887974
                            td->uncompressed_data[index_out] = tmp_buffer[index_tmp] & 0xff;
961
1887974
                            td->uncompressed_data[index_out + 1] = tmp_buffer[index_tmp] >> 8;
962
                        }
963
                    }
964
                }
965
            }
966
170
            target_channel_offset += 2;
967
        } else {/* Float or UINT 32 channel */
968
96
            if (stay_to_uncompress < td->ysize * td->xsize * 4) {
969
                av_log(s, AV_LOG_ERROR, "Not enough data for uncompress channel: %d", stay_to_uncompress);
970
                return AVERROR_INVALIDDATA;
971
            }
972
973
896
            for (y = 0; y < td->ysize; y++) {
974
800
                index_out = target_channel_offset * td->xsize + y * td->channel_line_size;
975
800
                memcpy(&td->uncompressed_data[index_out], sr, td->xsize * 4);
976
800
                sr += td->xsize * 4;
977
            }
978
96
            target_channel_offset += 4;
979
980
96
            stay_to_uncompress -= td->ysize * td->xsize * 4;
981
        }
982
    }
983
984
46
    return 0;
985
}
986
987
5706
static int decode_block(AVCodecContext *avctx, void *tdata,
988
                        int jobnr, int threadnr)
989
{
990
5706
    EXRContext *s = avctx->priv_data;
991
5706
    AVFrame *const p = s->picture;
992
5706
    EXRThreadData *td = &s->thread_data[threadnr];
993
5706
    const uint8_t *channel_buffer[4] = { 0 };
994
5706
    const uint8_t *buf = s->buf;
995
    uint64_t line_offset, uncompressed_size;
996
    uint8_t *ptr;
997
    uint32_t data_size;
998
5706
    int line, col = 0;
999
    uint64_t tile_x, tile_y, tile_level_x, tile_level_y;
1000
    const uint8_t *src;
1001
5706
    int step = s->desc->flags & AV_PIX_FMT_FLAG_FLOAT ? 4 : 2 * s->desc->nb_components;
1002
5706
    int bxmin = 0, axmax = 0, window_xoffset = 0;
1003
    int window_xmin, window_xmax, window_ymin, window_ymax;
1004
    int data_xoffset, data_yoffset, data_window_offset, xsize, ysize;
1005
5706
    int i, x, buf_size = s->buf_size;
1006
    int c, rgb_channel_count;
1007
5706
    float one_gamma = 1.0f / s->gamma;
1008
5706
    avpriv_trc_function trc_func = avpriv_get_trc_function_from_trc(s->apply_trc_type);
1009
    int ret;
1010
1011
5706
    line_offset = AV_RL64(s->gb.buffer + jobnr * 8);
1012
1013
5706
    if (s->is_tile) {
1014

208
        if (buf_size < 20 || line_offset > buf_size - 20)
1015
            return AVERROR_INVALIDDATA;
1016
1017
208
        src  = buf + line_offset + 20;
1018
1019
208
        tile_x = AV_RL32(src - 20);
1020
208
        tile_y = AV_RL32(src - 16);
1021
208
        tile_level_x = AV_RL32(src - 12);
1022
208
        tile_level_y = AV_RL32(src - 8);
1023
1024
208
        data_size = AV_RL32(src - 4);
1025

208
        if (data_size <= 0 || data_size > buf_size - line_offset - 20)
1026
            return AVERROR_INVALIDDATA;
1027
1028

208
        if (tile_level_x || tile_level_y) { /* tile level, is not the full res level */
1029
            avpriv_report_missing_feature(s->avctx, "Subres tile before full res tile");
1030
            return AVERROR_PATCHWELCOME;
1031
        }
1032
1033
208
        line = s->ymin + s->tile_attr.ySize * tile_y;
1034
208
        col = s->tile_attr.xSize * tile_x;
1035
1036

208
        if (line < s->ymin || line > s->ymax ||
1037

208
            s->xmin + col  < s->xmin ||  s->xmin + col  > s->xmax)
1038
            return AVERROR_INVALIDDATA;
1039
1040
208
        td->ysize = FFMIN(s->tile_attr.ySize, s->ydelta - tile_y * s->tile_attr.ySize);
1041
208
        td->xsize = FFMIN(s->tile_attr.xSize, s->xdelta - tile_x * s->tile_attr.xSize);
1042
1043
208
        if (td->xsize * (uint64_t)s->current_channel_offset > INT_MAX)
1044
            return AVERROR_INVALIDDATA;
1045
1046
208
        td->channel_line_size = td->xsize * s->current_channel_offset;/* uncompress size of one line */
1047
208
        uncompressed_size = td->channel_line_size * (uint64_t)td->ysize;/* uncompress size of the block */
1048
    } else {
1049

5498
        if (buf_size < 8 || line_offset > buf_size - 8)
1050
            return AVERROR_INVALIDDATA;
1051
1052
5498
        src  = buf + line_offset + 8;
1053
5498
        line = AV_RL32(src - 8);
1054
1055

5498
        if (line < s->ymin || line > s->ymax)
1056
            return AVERROR_INVALIDDATA;
1057
1058
5498
        data_size = AV_RL32(src - 4);
1059

5498
        if (data_size <= 0 || data_size > buf_size - line_offset - 8)
1060
            return AVERROR_INVALIDDATA;
1061
1062
5498
        td->ysize          = FFMIN(s->scan_lines_per_block, s->ymax - line + 1); /* s->ydelta - line ?? */
1063
5498
        td->xsize          = s->xdelta;
1064
1065
5498
        if (td->xsize * (uint64_t)s->current_channel_offset > INT_MAX)
1066
            return AVERROR_INVALIDDATA;
1067
1068
5498
        td->channel_line_size = td->xsize * s->current_channel_offset;/* uncompress size of one line */
1069
5498
        uncompressed_size = td->channel_line_size * (uint64_t)td->ysize;/* uncompress size of the block */
1070
1071

5498
        if ((s->compression == EXR_RAW && (data_size != uncompressed_size ||
1072
1390
                                           line_offset > buf_size - uncompressed_size)) ||
1073

5498
            (s->compression != EXR_RAW && (data_size > uncompressed_size ||
1074
4108
                                           line_offset > buf_size - data_size))) {
1075
            return AVERROR_INVALIDDATA;
1076
        }
1077
    }
1078
1079
5706
    window_xmin = FFMIN(avctx->width, FFMAX(0, s->xmin + col));
1080
5706
    window_xmax = FFMIN(avctx->width, FFMAX(0, s->xmin + col + td->xsize));
1081
5706
    window_ymin = FFMIN(avctx->height, FFMAX(0, line ));
1082
5706
    window_ymax = FFMIN(avctx->height, FFMAX(0, line + td->ysize));
1083
5706
    xsize = window_xmax - window_xmin;
1084
5706
    ysize = window_ymax - window_ymin;
1085
1086
    /* tile or scanline not visible skip decoding */
1087

5706
    if (xsize <= 0 || ysize <= 0)
1088
866
        return 0;
1089
1090
    /* is the first tile or is a scanline */
1091
4840
    if(col == 0) {
1092
4760
        window_xmin = 0;
1093
        /* pixels to add at the left of the display window */
1094
4760
        window_xoffset = FFMAX(0, s->xmin);
1095
        /* bytes to add at the left of the display window */
1096
4760
        bxmin = window_xoffset * step;
1097
    }
1098
1099
    /* is the last tile or is a scanline */
1100
4840
    if(col + td->xsize == s->xdelta) {
1101
4760
        window_xmax = avctx->width;
1102
         /* bytes to add at the right of the display window */
1103
4760
        axmax = FFMAX(0, (avctx->width - (s->xmax + 1))) * step;
1104
    }
1105
1106

4840
    if (data_size < uncompressed_size || s->is_tile) { /* td->tmp is use for tile reorganization */
1107
3446
        av_fast_padded_malloc(&td->tmp, &td->tmp_size, uncompressed_size);
1108
3446
        if (!td->tmp)
1109
            return AVERROR(ENOMEM);
1110
    }
1111
1112
4840
    if (data_size < uncompressed_size) {
1113
3420
        av_fast_padded_malloc(&td->uncompressed_data,
1114
3420
                              &td->uncompressed_size, uncompressed_size + 64);/* Force 64 padding for AVX2 reorder_pixels dst */
1115
1116
3420
        if (!td->uncompressed_data)
1117
            return AVERROR(ENOMEM);
1118
1119
3420
        ret = AVERROR_INVALIDDATA;
1120

3420
        switch (s->compression) {
1121
1806
        case EXR_ZIP1:
1122
        case EXR_ZIP16:
1123
1806
            ret = zip_uncompress(s, src, data_size, uncompressed_size, td);
1124
1806
            break;
1125
60
        case EXR_PIZ:
1126
60
            ret = piz_uncompress(s, src, data_size, uncompressed_size, td);
1127
60
            break;
1128
122
        case EXR_PXR24:
1129
122
            ret = pxr24_uncompress(s, src, data_size, uncompressed_size, td);
1130
122
            break;
1131
1386
        case EXR_RLE:
1132
1386
            ret = rle_uncompress(s, src, data_size, uncompressed_size, td);
1133
1386
            break;
1134
46
        case EXR_B44:
1135
        case EXR_B44A:
1136
46
            ret = b44_uncompress(s, src, data_size, uncompressed_size, td);
1137
46
            break;
1138
        }
1139
3420
        if (ret < 0) {
1140
            av_log(avctx, AV_LOG_ERROR, "decode_block() failed.\n");
1141
            return ret;
1142
        }
1143
3420
        src = td->uncompressed_data;
1144
    }
1145
1146
    /* offsets to crop data outside display window */
1147

4840
    data_xoffset = FFABS(FFMIN(0, s->xmin + col)) * (s->pixel_type == EXR_HALF ? 2 : 4);
1148
4840
    data_yoffset = FFABS(FFMIN(0, line));
1149
4840
    data_window_offset = (data_yoffset * td->channel_line_size) + data_xoffset;
1150
1151
4840
    if (!s->is_luma) {
1152
4820
        channel_buffer[0] = src + (td->xsize * s->channel_offsets[0]) + data_window_offset;
1153
4820
        channel_buffer[1] = src + (td->xsize * s->channel_offsets[1]) + data_window_offset;
1154
4820
        channel_buffer[2] = src + (td->xsize * s->channel_offsets[2]) + data_window_offset;
1155
4820
        rgb_channel_count = 3;
1156
    } else { /* put y data in the first channel_buffer */
1157
20
        channel_buffer[0] = src + (td->xsize * s->channel_offsets[1]) + data_window_offset;
1158
20
        rgb_channel_count = 1;
1159
    }
1160
4840
     if (s->channel_offsets[3] >= 0)
1161
4258
        channel_buffer[3] = src + (td->xsize * s->channel_offsets[3]) + data_window_offset;
1162
1163
4840
    if (s->desc->flags & AV_PIX_FMT_FLAG_FLOAT) {
1164
1165
        /* todo: change this when a floating point pixel format with luma with alpha is implemented */
1166
4820
        int channel_count = s->channel_offsets[3] >= 0 ? 4 : rgb_channel_count;
1167
4820
        if (s->is_luma) {
1168
20
            channel_buffer[1] = channel_buffer[0];
1169
20
            channel_buffer[2] = channel_buffer[0];
1170
        }
1171
1172
23530
        for (c = 0; c < channel_count; c++) {
1173
18710
            int plane = s->desc->comp[c].plane;
1174
18710
            ptr = p->data[plane] + window_ymin * p->linesize[plane] + (window_xmin * 4);
1175
1176
70606
            for (i = 0; i < ysize; i++, ptr += p->linesize[plane]) {
1177
                const uint8_t *src;
1178
                union av_intfloat32 *ptr_x;
1179
1180
51896
                src = channel_buffer[c];
1181
51896
                ptr_x = (union av_intfloat32 *)ptr;
1182
1183
                // Zero out the start if xmin is not 0
1184
51896
                memset(ptr_x, 0, bxmin);
1185
51896
                ptr_x += window_xoffset;
1186
1187
51896
                if (s->pixel_type == EXR_FLOAT) {
1188
                    // 32-bit
1189
                    union av_intfloat32 t;
1190

4136
                    if (trc_func && c < 3) {
1191
                        for (x = 0; x < xsize; x++) {
1192
                            t.i = bytestream_get_le32(&src);
1193
                            t.f = trc_func(t.f);
1194
                            *ptr_x++ = t;
1195
                        }
1196
                    } else {
1197
160952
                        for (x = 0; x < xsize; x++) {
1198
156816
                            t.i = bytestream_get_le32(&src);
1199

156816
                            if (t.f > 0.0f && c < 3)  /* avoid negative values */
1200
151236
                                t.f = powf(t.f, one_gamma);
1201
156816
                            *ptr_x++ = t;
1202
                        }
1203
                    }
1204
47760
                } else if (s->pixel_type == EXR_HALF) {
1205
                    // 16-bit
1206

47760
                    if (c < 3 || !trc_func) {
1207
20682738
                        for (x = 0; x < xsize; x++) {
1208
20634978
                            *ptr_x++ = s->gamma_table[bytestream_get_le16(&src)];
1209
                        }
1210
                    } else {
1211
                        for (x = 0; x < xsize; x++) {
1212
                            *ptr_x++ = exr_half2float(bytestream_get_le16(&src));;
1213
                        }
1214
                    }
1215
                }
1216
1217
                // Zero out the end if xmax+1 is not w
1218
51896
                memset(ptr_x, 0, axmax);
1219
51896
                channel_buffer[c] += td->channel_line_size;
1220
            }
1221
        }
1222
    } else {
1223
1224
        av_assert1(s->pixel_type == EXR_UINT);
1225
20
        ptr = p->data[0] + window_ymin * p->linesize[0] + (window_xmin * s->desc->nb_components * 2);
1226
1227
370
        for (i = 0; i < ysize; i++, ptr += p->linesize[0]) {
1228
1229
            const uint8_t * a;
1230
            const uint8_t *rgb[3];
1231
            uint16_t *ptr_x;
1232
1233
1400
            for (c = 0; c < rgb_channel_count; c++) {
1234
1050
                rgb[c] = channel_buffer[c];
1235
            }
1236
1237
350
            if (channel_buffer[3])
1238
                a = channel_buffer[3];
1239
1240
350
            ptr_x = (uint16_t *) ptr;
1241
1242
            // Zero out the start if xmin is not 0
1243
350
            memset(ptr_x, 0, bxmin);
1244
350
            ptr_x += window_xoffset * s->desc->nb_components;
1245
1246
10968
            for (x = 0; x < xsize; x++) {
1247
42472
                for (c = 0; c < rgb_channel_count; c++) {
1248
31854
                    *ptr_x++ = bytestream_get_le32(&rgb[c]) >> 16;
1249
                }
1250
1251
10618
                if (channel_buffer[3])
1252
                    *ptr_x++ = bytestream_get_le32(&a) >> 16;
1253
            }
1254
1255
            // Zero out the end if xmax+1 is not w
1256
350
            memset(ptr_x, 0, axmax);
1257
1258
350
            channel_buffer[0] += td->channel_line_size;
1259
350
            channel_buffer[1] += td->channel_line_size;
1260
350
            channel_buffer[2] += td->channel_line_size;
1261
350
            if (channel_buffer[3])
1262
                channel_buffer[3] += td->channel_line_size;
1263
        }
1264
    }
1265
1266
4840
    return 0;
1267
}
1268
1269
/**
1270
 * Check if the variable name corresponds to its data type.
1271
 *
1272
 * @param s              the EXRContext
1273
 * @param value_name     name of the variable to check
1274
 * @param value_type     type of the variable to check
1275
 * @param minimum_length minimum length of the variable data
1276
 *
1277
 * @return bytes to read containing variable data
1278
 *         -1 if variable is not found
1279
 *         0 if buffer ended prematurely
1280
 */
1281
15086
static int check_header_variable(EXRContext *s,
1282
                                 const char *value_name,
1283
                                 const char *value_type,
1284
                                 unsigned int minimum_length)
1285
{
1286
15086
    int var_size = -1;
1287
1288
15086
    if (bytestream2_get_bytes_left(&s->gb) >= minimum_length &&
1289
15086
        !strcmp(s->gb.buffer, value_name)) {
1290
        // found value_name, jump to value_type (null terminated strings)
1291
936
        s->gb.buffer += strlen(value_name) + 1;
1292
936
        if (!strcmp(s->gb.buffer, value_type)) {
1293
936
            s->gb.buffer += strlen(value_type) + 1;
1294
936
            var_size = bytestream2_get_le32(&s->gb);
1295
            // don't go read past boundaries
1296
936
            if (var_size > bytestream2_get_bytes_left(&s->gb))
1297
                var_size = 0;
1298
        } else {
1299
            // value_type not found, reset the buffer
1300
            s->gb.buffer -= strlen(value_name) + 1;
1301
            av_log(s->avctx, AV_LOG_WARNING,
1302
                   "Unknown data type %s for header variable %s.\n",
1303
                   value_type, value_name);
1304
        }
1305
    }
1306
1307
15086
    return var_size;
1308
}
1309
1310
146
static int decode_header(EXRContext *s, AVFrame *frame)
1311
{
1312
146
    AVDictionary *metadata = NULL;
1313
146
    int magic_number, version, i, flags, sar = 0;
1314
146
    int layer_match = 0;
1315
    int ret;
1316
146
    int dup_channels = 0;
1317
1318
146
    s->current_channel_offset = 0;
1319
146
    s->xmin               = ~0;
1320
146
    s->xmax               = ~0;
1321
146
    s->ymin               = ~0;
1322
146
    s->ymax               = ~0;
1323
146
    s->xdelta             = ~0;
1324
146
    s->ydelta             = ~0;
1325
146
    s->channel_offsets[0] = -1;
1326
146
    s->channel_offsets[1] = -1;
1327
146
    s->channel_offsets[2] = -1;
1328
146
    s->channel_offsets[3] = -1;
1329
146
    s->pixel_type         = EXR_UNKNOWN;
1330
146
    s->compression        = EXR_UNKN;
1331
146
    s->nb_channels        = 0;
1332
146
    s->w                  = 0;
1333
146
    s->h                  = 0;
1334
146
    s->tile_attr.xSize    = -1;
1335
146
    s->tile_attr.ySize    = -1;
1336
146
    s->is_tile            = 0;
1337
146
    s->is_luma            = 0;
1338
1339
146
    if (bytestream2_get_bytes_left(&s->gb) < 10) {
1340
        av_log(s->avctx, AV_LOG_ERROR, "Header too short to parse.\n");
1341
        return AVERROR_INVALIDDATA;
1342
    }
1343
1344
146
    magic_number = bytestream2_get_le32(&s->gb);
1345
146
    if (magic_number != 20000630) {
1346
        /* As per documentation of OpenEXR, it is supposed to be
1347
         * int 20000630 little-endian */
1348
        av_log(s->avctx, AV_LOG_ERROR, "Wrong magic number %d.\n", magic_number);
1349
        return AVERROR_INVALIDDATA;
1350
    }
1351
1352
146
    version = bytestream2_get_byte(&s->gb);
1353
146
    if (version != 2) {
1354
        avpriv_report_missing_feature(s->avctx, "Version %d", version);
1355
        return AVERROR_PATCHWELCOME;
1356
    }
1357
1358
146
    flags = bytestream2_get_le24(&s->gb);
1359
1360
146
    if (flags & 0x02)
1361
44
        s->is_tile = 1;
1362
146
    if (flags & 0x08) {
1363
        avpriv_report_missing_feature(s->avctx, "deep data");
1364
        return AVERROR_PATCHWELCOME;
1365
    }
1366
146
    if (flags & 0x10) {
1367
        avpriv_report_missing_feature(s->avctx, "multipart");
1368
        return AVERROR_PATCHWELCOME;
1369
    }
1370
1371
    // Parse the header
1372

2530
    while (bytestream2_get_bytes_left(&s->gb) > 0 && *s->gb.buffer) {
1373
        int var_size;
1374
2384
        if ((var_size = check_header_variable(s, "channels",
1375
                                              "chlist", 38)) >= 0) {
1376
            GetByteContext ch_gb;
1377
146
            if (!var_size) {
1378
                ret = AVERROR_INVALIDDATA;
1379
                goto fail;
1380
            }
1381
1382
146
            bytestream2_init(&ch_gb, s->gb.buffer, var_size);
1383
1384
904
            while (bytestream2_get_bytes_left(&ch_gb) >= 19) {
1385
                EXRChannel *channel;
1386
                enum ExrPixelType current_pixel_type;
1387
758
                int channel_index = -1;
1388
                int xsub, ysub;
1389
1390
758
                if (strcmp(s->layer, "") != 0) {
1391
272
                    if (strncmp(ch_gb.buffer, s->layer, strlen(s->layer)) == 0) {
1392
150
                        layer_match = 1;
1393
150
                        av_log(s->avctx, AV_LOG_INFO,
1394
                               "Channel match layer : %s.\n", ch_gb.buffer);
1395
150
                        ch_gb.buffer += strlen(s->layer);
1396
150
                        if (*ch_gb.buffer == '.')
1397
150
                            ch_gb.buffer++;         /* skip dot if not given */
1398
                    } else {
1399
122
                        layer_match = 0;
1400
122
                        av_log(s->avctx, AV_LOG_INFO,
1401
                               "Channel doesn't match layer : %s.\n", ch_gb.buffer);
1402
                    }
1403
                } else {
1404
486
                    layer_match = 1;
1405
                }
1406
1407
758
                if (layer_match) { /* only search channel if the layer match is valid */
1408

1132
                    if (!av_strcasecmp(ch_gb.buffer, "R") ||
1409
992
                        !av_strcasecmp(ch_gb.buffer, "X") ||
1410
496
                        !av_strcasecmp(ch_gb.buffer, "U")) {
1411
140
                        channel_index = 0;
1412
140
                        s->is_luma = 0;
1413

852
                    } else if (!av_strcasecmp(ch_gb.buffer, "G") ||
1414
356
                               !av_strcasecmp(ch_gb.buffer, "V")) {
1415
140
                        channel_index = 1;
1416
140
                        s->is_luma = 0;
1417
356
                    } else if (!av_strcasecmp(ch_gb.buffer, "Y")) {
1418
6
                        channel_index = 1;
1419
6
                        s->is_luma = 1;
1420

560
                    } else if (!av_strcasecmp(ch_gb.buffer, "B") ||
1421
420
                               !av_strcasecmp(ch_gb.buffer, "Z") ||
1422
210
                               !av_strcasecmp(ch_gb.buffer, "W")) {
1423
140
                        channel_index = 2;
1424
140
                        s->is_luma = 0;
1425
210
                    } else if (!av_strcasecmp(ch_gb.buffer, "A")) {
1426
58
                        channel_index = 3;
1427
                    } else {
1428
152
                        av_log(s->avctx, AV_LOG_WARNING,
1429
                               "Unsupported channel %.256s.\n", ch_gb.buffer);
1430
                    }
1431
                }
1432
1433
                /* skip until you get a 0 */
1434

7896
                while (bytestream2_get_bytes_left(&ch_gb) > 0 &&
1435
3948
                       bytestream2_get_byte(&ch_gb))
1436
3190
                    continue;
1437
1438
758
                if (bytestream2_get_bytes_left(&ch_gb) < 4) {
1439
                    av_log(s->avctx, AV_LOG_ERROR, "Incomplete header.\n");
1440
                    ret = AVERROR_INVALIDDATA;
1441
                    goto fail;
1442
                }
1443
1444
758
                current_pixel_type = bytestream2_get_le32(&ch_gb);
1445
758
                if (current_pixel_type >= EXR_UNKNOWN) {
1446
                    avpriv_report_missing_feature(s->avctx, "Pixel type %d",
1447
                                                  current_pixel_type);
1448
                    ret = AVERROR_PATCHWELCOME;
1449
                    goto fail;
1450
                }
1451
1452
758
                bytestream2_skip(&ch_gb, 4);
1453
758
                xsub = bytestream2_get_le32(&ch_gb);
1454
758
                ysub = bytestream2_get_le32(&ch_gb);
1455
1456

758
                if (xsub != 1 || ysub != 1) {
1457
                    avpriv_report_missing_feature(s->avctx,
1458
                                                  "Subsampling %dx%d",
1459
                                                  xsub, ysub);
1460
                    ret = AVERROR_PATCHWELCOME;
1461
                    goto fail;
1462
                }
1463
1464

758
                if (channel_index >= 0 && s->channel_offsets[channel_index] == -1) { /* channel has not been previously assigned */
1465
484
                    if (s->pixel_type != EXR_UNKNOWN &&
1466
338
                        s->pixel_type != current_pixel_type) {
1467
                        av_log(s->avctx, AV_LOG_ERROR,
1468
                               "RGB channels not of the same depth.\n");
1469
                        ret = AVERROR_INVALIDDATA;
1470
                        goto fail;
1471
                    }
1472
484
                    s->pixel_type                     = current_pixel_type;
1473
484
                    s->channel_offsets[channel_index] = s->current_channel_offset;
1474
274
                } else if (channel_index >= 0) {
1475
                    av_log(s->avctx, AV_LOG_WARNING,
1476
                            "Multiple channels with index %d.\n", channel_index);
1477
                    if (++dup_channels > 10) {
1478
                        ret = AVERROR_INVALIDDATA;
1479
                        goto fail;
1480
                    }
1481
                }
1482
1483
1516
                s->channels = av_realloc(s->channels,
1484
758
                                         ++s->nb_channels * sizeof(EXRChannel));
1485
758
                if (!s->channels) {
1486
                    ret = AVERROR(ENOMEM);
1487
                    goto fail;
1488
                }
1489
758
                channel             = &s->channels[s->nb_channels - 1];
1490
758
                channel->pixel_type = current_pixel_type;
1491
758
                channel->xsub       = xsub;
1492
758
                channel->ysub       = ysub;
1493
1494
758
                if (current_pixel_type == EXR_HALF) {
1495
398
                    s->current_channel_offset += 2;
1496
                } else {/* Float or UINT32 */
1497
360
                    s->current_channel_offset += 4;
1498
                }
1499
            }
1500
1501
            /* Check if all channels are set with an offset or if the channels
1502
             * are causing an overflow  */
1503
146
            if (!s->is_luma) {/* if we expected to have at least 3 channels */
1504
140
                if (FFMIN3(s->channel_offsets[0],
1505
                           s->channel_offsets[1],
1506
                           s->channel_offsets[2]) < 0) {
1507
                    if (s->channel_offsets[0] < 0)
1508
                        av_log(s->avctx, AV_LOG_ERROR, "Missing red channel.\n");
1509
                    if (s->channel_offsets[1] < 0)
1510
                        av_log(s->avctx, AV_LOG_ERROR, "Missing green channel.\n");
1511
                    if (s->channel_offsets[2] < 0)
1512
                        av_log(s->avctx, AV_LOG_ERROR, "Missing blue channel.\n");
1513
                    ret = AVERROR_INVALIDDATA;
1514
                    goto fail;
1515
                }
1516
            }
1517
1518
            // skip one last byte and update main gb
1519
146
            s->gb.buffer = ch_gb.buffer + 1;
1520
146
            continue;
1521
2238
        } else if ((var_size = check_header_variable(s, "dataWindow", "box2i",
1522
                                                     31)) >= 0) {
1523
            int xmin, ymin, xmax, ymax;
1524
146
            if (!var_size) {
1525
                ret = AVERROR_INVALIDDATA;
1526
                goto fail;
1527
            }
1528
1529
146
            xmin   = bytestream2_get_le32(&s->gb);
1530
146
            ymin   = bytestream2_get_le32(&s->gb);
1531
146
            xmax   = bytestream2_get_le32(&s->gb);
1532
146
            ymax   = bytestream2_get_le32(&s->gb);
1533
1534

146
            if (xmin > xmax || ymin > ymax ||
1535
146
                (unsigned)xmax - xmin >= INT_MAX ||
1536
146
                (unsigned)ymax - ymin >= INT_MAX) {
1537
                ret = AVERROR_INVALIDDATA;
1538
                goto fail;
1539
            }
1540
146
            s->xmin = xmin;
1541
146
            s->xmax = xmax;
1542
146
            s->ymin = ymin;
1543
146
            s->ymax = ymax;
1544
146
            s->xdelta = (s->xmax - s->xmin) + 1;
1545
146
            s->ydelta = (s->ymax - s->ymin) + 1;
1546
1547
146
            continue;
1548
2092
        } else if ((var_size = check_header_variable(s, "displayWindow",
1549
                                                     "box2i", 34)) >= 0) {
1550
146
            if (!var_size) {
1551
                ret = AVERROR_INVALIDDATA;
1552
                goto fail;
1553
            }
1554
1555
146
            bytestream2_skip(&s->gb, 8);
1556
146
            s->w = bytestream2_get_le32(&s->gb) + 1;
1557
146
            s->h = bytestream2_get_le32(&s->gb) + 1;
1558
1559
146
            continue;
1560
1946
        } else if ((var_size = check_header_variable(s, "lineOrder",
1561
                                                     "lineOrder", 25)) >= 0) {
1562
            int line_order;
1563
146
            if (!var_size) {
1564
                ret = AVERROR_INVALIDDATA;
1565
                goto fail;
1566
            }
1567
1568
146
            line_order = bytestream2_get_byte(&s->gb);
1569
146
            av_log(s->avctx, AV_LOG_DEBUG, "line order: %d.\n", line_order);
1570
146
            if (line_order > 2) {
1571
                av_log(s->avctx, AV_LOG_ERROR, "Unknown line order.\n");
1572
                ret = AVERROR_INVALIDDATA;
1573
                goto fail;
1574
            }
1575
1576
146
            continue;
1577
1800
        } else if ((var_size = check_header_variable(s, "pixelAspectRatio",
1578
                                                     "float", 31)) >= 0) {
1579
146
            if (!var_size) {
1580
                ret = AVERROR_INVALIDDATA;
1581
                goto fail;
1582
            }
1583
1584
146
            sar = bytestream2_get_le32(&s->gb);
1585
1586
146
            continue;
1587
1654
        } else if ((var_size = check_header_variable(s, "compression",
1588
                                                     "compression", 29)) >= 0) {
1589
146
            if (!var_size) {
1590
                ret = AVERROR_INVALIDDATA;
1591
                goto fail;
1592
            }
1593
1594
146
            if (s->compression == EXR_UNKN)
1595
146
                s->compression = bytestream2_get_byte(&s->gb);
1596
            else
1597
                av_log(s->avctx, AV_LOG_WARNING,
1598
                       "Found more than one compression attribute.\n");
1599
1600
146
            continue;
1601
1508
        } else if ((var_size = check_header_variable(s, "tiles",
1602
                                                     "tiledesc", 22)) >= 0) {
1603
            char tileLevel;
1604
1605
44
            if (!s->is_tile)
1606
                av_log(s->avctx, AV_LOG_WARNING,
1607
                       "Found tile attribute and scanline flags. Exr will be interpreted as scanline.\n");
1608
1609
44
            s->tile_attr.xSize = bytestream2_get_le32(&s->gb);
1610
44
            s->tile_attr.ySize = bytestream2_get_le32(&s->gb);
1611
1612
44
            tileLevel = bytestream2_get_byte(&s->gb);
1613
44
            s->tile_attr.level_mode = tileLevel & 0x0f;
1614
44
            s->tile_attr.level_round = (tileLevel >> 4) & 0x0f;
1615
1616
44
            if (s->tile_attr.level_mode >= EXR_TILE_LEVEL_UNKNOWN) {
1617
                avpriv_report_missing_feature(s->avctx, "Tile level mode %d",
1618
                                              s->tile_attr.level_mode);
1619
                ret = AVERROR_PATCHWELCOME;
1620
                goto fail;
1621
            }
1622
1623
44
            if (s->tile_attr.level_round >= EXR_TILE_ROUND_UNKNOWN) {
1624
                avpriv_report_missing_feature(s->avctx, "Tile level round %d",
1625
                                              s->tile_attr.level_round);
1626
                ret = AVERROR_PATCHWELCOME;
1627
                goto fail;
1628
            }
1629
1630
44
            continue;
1631
1464
        } else if ((var_size = check_header_variable(s, "writer",
1632
                                                     "string", 1)) >= 0) {
1633
16
            uint8_t key[256] = { 0 };
1634
1635
16
            bytestream2_get_buffer(&s->gb, key, FFMIN(sizeof(key) - 1, var_size));
1636
16
            av_dict_set(&metadata, "writer", key, 0);
1637
1638
16
            continue;
1639
        }
1640
1641
        // Check if there are enough bytes for a header
1642
1448
        if (bytestream2_get_bytes_left(&s->gb) <= 9) {
1643
            av_log(s->avctx, AV_LOG_ERROR, "Incomplete header\n");
1644
            ret = AVERROR_INVALIDDATA;
1645
            goto fail;
1646
        }
1647
1648
        // Process unknown variables
1649
4344
        for (i = 0; i < 2; i++) // value_name and value_type
1650
30258
            while (bytestream2_get_byte(&s->gb) != 0);
1651
1652
        // Skip variable length
1653
1448
        bytestream2_skip(&s->gb, bytestream2_get_le32(&s->gb));
1654
    }
1655
1656
146
    ff_set_sar(s->avctx, av_d2q(av_int2float(sar), 255));
1657
1658
146
    if (s->compression == EXR_UNKN) {
1659
        av_log(s->avctx, AV_LOG_ERROR, "Missing compression attribute.\n");
1660
        ret = AVERROR_INVALIDDATA;
1661
        goto fail;
1662
    }
1663
1664
146
    if (s->is_tile) {
1665

44
        if (s->tile_attr.xSize < 1 || s->tile_attr.ySize < 1) {
1666
            av_log(s->avctx, AV_LOG_ERROR, "Invalid tile attribute.\n");
1667
            ret = AVERROR_INVALIDDATA;
1668
            goto fail;
1669
        }
1670
    }
1671
1672
146
    if (bytestream2_get_bytes_left(&s->gb) <= 0) {
1673
        av_log(s->avctx, AV_LOG_ERROR, "Incomplete frame.\n");
1674
        ret = AVERROR_INVALIDDATA;
1675
        goto fail;
1676
    }
1677
1678
146
    frame->metadata = metadata;
1679
1680
    // aaand we are done
1681
146
    bytestream2_skip(&s->gb, 1);
1682
146
    return 0;
1683
fail:
1684
    av_dict_free(&metadata);
1685
    return ret;
1686
}
1687
1688
146
static int decode_frame(AVCodecContext *avctx, void *data,
1689
                        int *got_frame, AVPacket *avpkt)
1690
{
1691
146
    EXRContext *s = avctx->priv_data;
1692
146
    ThreadFrame frame = { .f = data };
1693
146
    AVFrame *picture = data;
1694
    uint8_t *ptr;
1695
1696
    int i, y, ret, ymax;
1697
    int planes;
1698
    int out_line_size;
1699
    int nb_blocks;   /* nb scanline or nb tile */
1700
    uint64_t start_offset_table;
1701
    uint64_t start_next_scanline;
1702
    PutByteContext offset_table_writer;
1703
1704
146
    bytestream2_init(&s->gb, avpkt->data, avpkt->size);
1705
1706
146
    if ((ret = decode_header(s, picture)) < 0)
1707
        return ret;
1708
1709
146
    switch (s->pixel_type) {
1710
136
    case EXR_FLOAT:
1711
    case EXR_HALF:
1712
136
        if (s->channel_offsets[3] >= 0) {
1713
58
            if (!s->is_luma) {
1714
56
                avctx->pix_fmt = AV_PIX_FMT_GBRAPF32;
1715
            } else {
1716
                /* todo: change this when a floating point pixel format with luma with alpha is implemented */
1717
2
                avctx->pix_fmt = AV_PIX_FMT_GBRAPF32;
1718
            }
1719
        } else {
1720
78
            if (!s->is_luma) {
1721
74
                avctx->pix_fmt = AV_PIX_FMT_GBRPF32;
1722
            } else {
1723
4
                avctx->pix_fmt = AV_PIX_FMT_GRAYF32;
1724
            }
1725
        }
1726
136
        break;
1727
10
    case EXR_UINT:
1728
10
        if (s->channel_offsets[3] >= 0) {
1729
            if (!s->is_luma) {
1730
                avctx->pix_fmt = AV_PIX_FMT_RGBA64;
1731
            } else {
1732
                avctx->pix_fmt = AV_PIX_FMT_YA16;
1733
            }
1734
        } else {
1735
10
            if (!s->is_luma) {
1736
10
                avctx->pix_fmt = AV_PIX_FMT_RGB48;
1737
            } else {
1738
                avctx->pix_fmt = AV_PIX_FMT_GRAY16;
1739
            }
1740
        }
1741
10
        break;
1742
    default:
1743
        av_log(avctx, AV_LOG_ERROR, "Missing channel list.\n");
1744
        return AVERROR_INVALIDDATA;
1745
    }
1746
1747
146
    if (s->apply_trc_type != AVCOL_TRC_UNSPECIFIED)
1748
        avctx->color_trc = s->apply_trc_type;
1749
1750

146
    switch (s->compression) {
1751
48
    case EXR_RAW:
1752
    case EXR_RLE:
1753
    case EXR_ZIP1:
1754
48
        s->scan_lines_per_block = 1;
1755
48
        break;
1756
48
    case EXR_PXR24:
1757
    case EXR_ZIP16:
1758
48
        s->scan_lines_per_block = 16;
1759
48
        break;
1760
50
    case EXR_PIZ:
1761
    case EXR_B44:
1762
    case EXR_B44A:
1763
50
        s->scan_lines_per_block = 32;
1764
50
        break;
1765
    default:
1766
        avpriv_report_missing_feature(avctx, "Compression %d", s->compression);
1767
        return AVERROR_PATCHWELCOME;
1768
    }
1769
1770
    /* Verify the xmin, xmax, ymin and ymax before setting the actual image size.
1771
     * It's possible for the data window can larger or outside the display window */
1772

146
    if (s->xmin > s->xmax  || s->ymin > s->ymax ||
1773

146
        s->ydelta == 0xFFFFFFFF || s->xdelta == 0xFFFFFFFF) {
1774
        av_log(avctx, AV_LOG_ERROR, "Wrong or missing size information.\n");
1775
        return AVERROR_INVALIDDATA;
1776
    }
1777
1778
146
    if ((ret = ff_set_dimensions(avctx, s->w, s->h)) < 0)
1779
        return ret;
1780
1781
146
    s->desc          = av_pix_fmt_desc_get(avctx->pix_fmt);
1782
146
    if (!s->desc)
1783
        return AVERROR_INVALIDDATA;
1784
1785
146
    if (s->desc->flags & AV_PIX_FMT_FLAG_FLOAT) {
1786
136
        planes           = s->desc->nb_components;
1787
136
        out_line_size    = avctx->width * 4;
1788
    } else {
1789
10
        planes           = 1;
1790
10
        out_line_size    = avctx->width * 2 * s->desc->nb_components;
1791
    }
1792
1793
146
    if (s->is_tile) {
1794
44
        nb_blocks = ((s->xdelta + s->tile_attr.xSize - 1) / s->tile_attr.xSize) *
1795
44
        ((s->ydelta + s->tile_attr.ySize - 1) / s->tile_attr.ySize);
1796
    } else { /* scanline */
1797
102
        nb_blocks = (s->ydelta + s->scan_lines_per_block - 1) /
1798
102
        s->scan_lines_per_block;
1799
    }
1800
1801
146
    if ((ret = ff_thread_get_buffer(avctx, &frame, 0)) < 0)
1802
        return ret;
1803
1804
146
    if (bytestream2_get_bytes_left(&s->gb)/8 < nb_blocks)
1805
        return AVERROR_INVALIDDATA;
1806
1807
    // check offset table and recreate it if need
1808

146
    if (!s->is_tile && bytestream2_peek_le64(&s->gb) == 0) {
1809
1
        av_log(s->avctx, AV_LOG_DEBUG, "recreating invalid scanline offset table\n");
1810
1811
1
        start_offset_table = bytestream2_tell(&s->gb);
1812
1
        start_next_scanline = start_offset_table + nb_blocks * 8;
1813
1
        bytestream2_init_writer(&offset_table_writer, &avpkt->data[start_offset_table], nb_blocks * 8);
1814
1815
9
        for (y = 0; y < nb_blocks; y++) {
1816
            /* write offset of prev scanline in offset table */
1817
8
            bytestream2_put_le64(&offset_table_writer, start_next_scanline);
1818
1819
            /* get len of next scanline */
1820
8
            bytestream2_seek(&s->gb, start_next_scanline + 4, SEEK_SET);/* skip line number */
1821
8
            start_next_scanline += (bytestream2_get_le32(&s->gb) + 8);
1822
        }
1823
1
        bytestream2_seek(&s->gb, start_offset_table, SEEK_SET);
1824
    }
1825
1826
    // save pointer we are going to use in decode_block
1827
146
    s->buf      = avpkt->data;
1828
146
    s->buf_size = avpkt->size;
1829
1830
    // Zero out the start if ymin is not 0
1831
614
    for (i = 0; i < planes; i++) {
1832
468
        ptr = picture->data[i];
1833
948
        for (y = 0; y < FFMIN(s->ymin, s->h); y++) {
1834
480
            memset(ptr, 0, out_line_size);
1835
480
            ptr += picture->linesize[i];
1836
        }
1837
    }
1838
1839
146
    s->picture = picture;
1840
1841
146
    avctx->execute2(avctx, decode_block, s->thread_data, NULL, nb_blocks);
1842
1843
146
    ymax = FFMAX(0, s->ymax + 1);
1844
    // Zero out the end if ymax+1 is not h
1845
146
    if (ymax < avctx->height)
1846
32
        for (i = 0; i < planes; i++) {
1847
24
            ptr = picture->data[i] + (ymax * picture->linesize[i]);
1848
5568
            for (y = ymax; y < avctx->height; y++) {
1849
5544
                memset(ptr, 0, out_line_size);
1850
5544
                ptr += picture->linesize[i];
1851
            }
1852
        }
1853
1854
146
    picture->pict_type = AV_PICTURE_TYPE_I;
1855
146
    *got_frame = 1;
1856
1857
146
    return avpkt->size;
1858
}
1859
1860
146
static av_cold int decode_init(AVCodecContext *avctx)
1861
{
1862
146
    EXRContext *s = avctx->priv_data;
1863
    uint32_t i;
1864
    union av_intfloat32 t;
1865
146
    float one_gamma = 1.0f / s->gamma;
1866
146
    avpriv_trc_function trc_func = NULL;
1867
1868
146
    s->avctx              = avctx;
1869
1870
146
    ff_exrdsp_init(&s->dsp);
1871
1872
#if HAVE_BIGENDIAN
1873
    ff_bswapdsp_init(&s->bbdsp);
1874
#endif
1875
1876
146
    trc_func = avpriv_get_trc_function_from_trc(s->apply_trc_type);
1877
146
    if (trc_func) {
1878
        for (i = 0; i < 65536; ++i) {
1879
            t = exr_half2float(i);
1880
            t.f = trc_func(t.f);
1881
            s->gamma_table[i] = t;
1882
        }
1883
    } else {
1884

146
        if (one_gamma > 0.9999f && one_gamma < 1.0001f) {
1885
9568402
            for (i = 0; i < 65536; ++i) {
1886
9568256
                s->gamma_table[i] = exr_half2float(i);
1887
            }
1888
        } else {
1889
            for (i = 0; i < 65536; ++i) {
1890
                t = exr_half2float(i);
1891
                /* If negative value we reuse half value */
1892
                if (t.f <= 0.0f) {
1893
                    s->gamma_table[i] = t;
1894
                } else {
1895
                    t.f = powf(t.f, one_gamma);
1896
                    s->gamma_table[i] = t;
1897
                }
1898
            }
1899
        }
1900
    }
1901
1902
    // allocate thread data, used for non EXR_RAW compression types
1903
146
    s->thread_data = av_mallocz_array(avctx->thread_count, sizeof(EXRThreadData));
1904
146
    if (!s->thread_data)
1905
        return AVERROR_INVALIDDATA;
1906
1907
146
    return 0;
1908
}
1909
1910
146
static av_cold int decode_end(AVCodecContext *avctx)
1911
{
1912
146
    EXRContext *s = avctx->priv_data;
1913
    int i;
1914
292
    for (i = 0; i < avctx->thread_count; i++) {
1915
146
        EXRThreadData *td = &s->thread_data[i];
1916
146
        av_freep(&td->uncompressed_data);
1917
146
        av_freep(&td->tmp);
1918
146
        av_freep(&td->bitmap);
1919
146
        av_freep(&td->lut);
1920
    }
1921
1922
146
    av_freep(&s->thread_data);
1923
146
    av_freep(&s->channels);
1924
1925
146
    return 0;
1926
}
1927
1928
#define OFFSET(x) offsetof(EXRContext, x)
1929
#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
1930
static const AVOption options[] = {
1931
    { "layer", "Set the decoding layer", OFFSET(layer),
1932
        AV_OPT_TYPE_STRING, { .str = "" }, 0, 0, VD },
1933
    { "gamma", "Set the float gamma value when decoding", OFFSET(gamma),
1934
        AV_OPT_TYPE_FLOAT, { .dbl = 1.0f }, 0.001, FLT_MAX, VD },
1935
1936
    // XXX: Note the abuse of the enum using AVCOL_TRC_UNSPECIFIED to subsume the existing gamma option
1937
    { "apply_trc", "color transfer characteristics to apply to EXR linear input", OFFSET(apply_trc_type),
1938
        AV_OPT_TYPE_INT, {.i64 = AVCOL_TRC_UNSPECIFIED }, 1, AVCOL_TRC_NB-1, VD, "apply_trc_type"},
1939
    { "bt709",        "BT.709",           0,
1940
        AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT709 },        INT_MIN, INT_MAX, VD, "apply_trc_type"},
1941
    { "gamma",        "gamma",            0,
1942
        AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_UNSPECIFIED },  INT_MIN, INT_MAX, VD, "apply_trc_type"},
1943
    { "gamma22",      "BT.470 M",         0,
1944
        AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_GAMMA22 },      INT_MIN, INT_MAX, VD, "apply_trc_type"},
1945
    { "gamma28",      "BT.470 BG",        0,
1946
        AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_GAMMA28 },      INT_MIN, INT_MAX, VD, "apply_trc_type"},
1947
    { "smpte170m",    "SMPTE 170 M",      0,
1948
        AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTE170M },    INT_MIN, INT_MAX, VD, "apply_trc_type"},
1949
    { "smpte240m",    "SMPTE 240 M",      0,
1950
        AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTE240M },    INT_MIN, INT_MAX, VD, "apply_trc_type"},
1951
    { "linear",       "Linear",           0,
1952
        AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_LINEAR },       INT_MIN, INT_MAX, VD, "apply_trc_type"},
1953
    { "log",          "Log",              0,
1954
        AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_LOG },          INT_MIN, INT_MAX, VD, "apply_trc_type"},
1955
    { "log_sqrt",     "Log square root",  0,
1956
        AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_LOG_SQRT },     INT_MIN, INT_MAX, VD, "apply_trc_type"},
1957
    { "iec61966_2_4", "IEC 61966-2-4",    0,
1958
        AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_IEC61966_2_4 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
1959
    { "bt1361",       "BT.1361",          0,
1960
        AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT1361_ECG },   INT_MIN, INT_MAX, VD, "apply_trc_type"},
1961
    { "iec61966_2_1", "IEC 61966-2-1",    0,
1962
        AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_IEC61966_2_1 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
1963
    { "bt2020_10bit", "BT.2020 - 10 bit", 0,
1964
        AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT2020_10 },    INT_MIN, INT_MAX, VD, "apply_trc_type"},
1965
    { "bt2020_12bit", "BT.2020 - 12 bit", 0,
1966
        AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_BT2020_12 },    INT_MIN, INT_MAX, VD, "apply_trc_type"},
1967
    { "smpte2084",    "SMPTE ST 2084",    0,
1968
        AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTEST2084 },  INT_MIN, INT_MAX, VD, "apply_trc_type"},
1969
    { "smpte428_1",   "SMPTE ST 428-1",   0,
1970
        AV_OPT_TYPE_CONST, {.i64 = AVCOL_TRC_SMPTEST428_1 }, INT_MIN, INT_MAX, VD, "apply_trc_type"},
1971
1972
    { NULL },
1973
};
1974
1975
static const AVClass exr_class = {
1976
    .class_name = "EXR",
1977
    .item_name  = av_default_item_name,
1978
    .option     = options,
1979
    .version    = LIBAVUTIL_VERSION_INT,
1980
};
1981
1982
AVCodec ff_exr_decoder = {
1983
    .name             = "exr",
1984
    .long_name        = NULL_IF_CONFIG_SMALL("OpenEXR image"),
1985
    .type             = AVMEDIA_TYPE_VIDEO,
1986
    .id               = AV_CODEC_ID_EXR,
1987
    .priv_data_size   = sizeof(EXRContext),
1988
    .init             = decode_init,
1989
    .close            = decode_end,
1990
    .decode           = decode_frame,
1991
    .capabilities     = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
1992
                        AV_CODEC_CAP_SLICE_THREADS,
1993
    .priv_class       = &exr_class,
1994
};